1 /*
2 * Copyright (c) 2023 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 "devattestnetworkcallback_fuzzer.h"
17
18 #include <string>
19 #include <securec.h>
20 #include "devattest_network_callback.h"
21
22 using namespace std;
23 using namespace OHOS::DevAttest;
24 using namespace OHOS::NetManagerStandard;
25 namespace OHOS {
26 const uint8_t *g_baseFuzzData = nullptr;
27 size_t g_baseFuzzSize = 0;
28 size_t g_baseFuzzPos;
29 std::vector<NetCap> netCaps = {NET_CAPABILITY_MMS, NET_CAPABILITY_NOT_METERED, NET_CAPABILITY_INTERNET,
30 NET_CAPABILITY_NOT_VPN, NET_CAPABILITY_PORTAL,
31 NET_CAPABILITY_INTERNAL_DEFAULT};
32
33 template <class T>
GetData()34 T GetData()
35 {
36 T object {};
37 size_t objectSize = sizeof(object);
38 if (g_baseFuzzData == nullptr || objectSize > g_baseFuzzSize - g_baseFuzzPos) {
39 return object;
40 }
41 errno_t ret = memcpy_s(&object, objectSize, g_baseFuzzData + g_baseFuzzPos, objectSize);
42 if (ret != EOK) {
43 return {};
44 }
45 g_baseFuzzPos += objectSize;
46 return object;
47 }
48
NetCapabilitiesChange(const uint8_t * data,size_t size)49 static void NetCapabilitiesChange(const uint8_t* data, size_t size)
50 {
51 g_baseFuzzData = data;
52 g_baseFuzzSize = size;
53 g_baseFuzzPos = 0;
54 uint32_t netId = GetData<uint32_t>();
55 sptr<NetHandle> handle = (std::make_unique<NetHandle>()).release();
56 handle->SetNetId(netId);
57 sptr<NetAllCapabilities> allCap = (std::make_unique<NetAllCapabilities>()).release();
58 for (NetCap netCap : netCaps) {
59 if (GetData<bool>()) {
60 allCap->netCaps_.insert(netCap);
61 }
62 }
63 sptr<DevAttestNetworkCallback> devattestnetworkcallback =
64 (std::make_unique<DevAttestNetworkCallback>()).release();
65 (void)devattestnetworkcallback->NetCapabilitiesChange(handle, allCap);
66 }
67
DevattestNetworkCallbackFuzzTest(const uint8_t * data,size_t size)68 void DevattestNetworkCallbackFuzzTest(const uint8_t* data, size_t size)
69 {
70 int32_t demandSize = sizeof(int32_t) + sizeof(char);
71 if (static_cast<int32_t>(size) >= demandSize) {
72 NetCapabilitiesChange(data, size);
73 }
74 return;
75 }
76 }
77
78 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)79 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
80 {
81 /* Run your code on data */
82 OHOS::DevattestNetworkCallbackFuzzTest(data, size);
83 return 0;
84 }
85