1 /*
2 * Copyright (C) 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 "dhcpbinding_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <unistd.h>
21 #include "securec.h"
22 #include "dhcp_binding.h"
23
24 namespace OHOS {
25 namespace Wifi {
26 constexpr size_t DHCP_SLEEP_1 = 2;
27 constexpr size_t U32_AT_SIZE_ZERO = 4;
28 constexpr int CFG_DATA_MAX_BYTES = 20;
29
NextPendingIntervalTest(const uint8_t* data, size_t size)30 void NextPendingIntervalTest(const uint8_t* data, size_t size)
31 {
32 uint64_t pendingInterval = static_cast<uint64_t>(data[0]);
33 NextPendingInterval(pendingInterval);
34 }
35
IsExpireTest(const uint8_t* data, size_t size)36 void IsExpireTest(const uint8_t* data, size_t size)
37 {
38 AddressBinding binding;
39 binding.ipAddress = static_cast<uint32_t>(data[0]);
40 binding.clientId = static_cast<uint32_t>(data[0]);
41 binding.bindingTime = static_cast<uint64_t>(data[0]);
42 binding.pendingTime = static_cast<uint64_t>(data[0]);
43 binding.expireIn = static_cast<uint64_t>(data[0]);
44 binding.leaseTime = static_cast<uint64_t>(data[0]);
45 binding.pendingInterval = static_cast<uint64_t>(data[0]);
46 IsExpire(&binding);
47 }
48
WriteAddressBindingTest(const uint8_t* data, size_t size)49 void WriteAddressBindingTest(const uint8_t* data, size_t size)
50 {
51 AddressBinding binding;
52 uint32_t size_t = static_cast<uint64_t>(data[0]);
53 binding.ipAddress = static_cast<uint32_t>(data[0]);
54 binding.clientId = static_cast<uint32_t>(data[0]);
55 binding.bindingTime = static_cast<uint64_t>(data[0]);
56 binding.pendingTime = static_cast<uint64_t>(data[0]);
57 binding.expireIn = static_cast<uint64_t>(data[0]);
58 binding.leaseTime = static_cast<uint64_t>(data[0]);
59 binding.pendingInterval = static_cast<uint64_t>(data[0]);
60 char *out = nullptr;
61 if (memcpy_s(out, CFG_DATA_MAX_BYTES, data, CFG_DATA_MAX_BYTES - 1) != EOK) {
62 return;
63 }
64 WriteAddressBinding(&binding, out, size_t);
65 }
66
ParseAddressBindingTest(const uint8_t* data, size_t size)67 void ParseAddressBindingTest(const uint8_t* data, size_t size)
68 {
69 AddressBinding binding;
70 binding.ipAddress = static_cast<uint32_t>(data[0]);
71 binding.clientId = static_cast<uint32_t>(data[0]);
72 binding.bindingTime = static_cast<uint64_t>(data[0]);
73 binding.pendingTime = static_cast<uint64_t>(data[0]);
74 binding.expireIn = static_cast<uint64_t>(data[0]);
75 binding.leaseTime = static_cast<uint64_t>(data[0]);
76 binding.pendingInterval = static_cast<uint64_t>(data[0]);
77 const char *buf = "Text";
78 ParseAddressBinding(&binding, buf);
79 }
80
81 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)82 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
83 {
84 if ((data == nullptr) || (size <= OHOS::Wifi::U32_AT_SIZE_ZERO)) {
85 return 0;
86 }
87 sleep(DHCP_SLEEP_1);
88 OHOS::Wifi::NextPendingIntervalTest(data, size);
89 OHOS::Wifi::IsExpireTest(data, size);
90 OHOS::Wifi::WriteAddressBindingTest(data, size);
91 OHOS::Wifi::ParseAddressBindingTest(data, size);
92 return 0;
93 }
94 } // namespace Wifi
95 } // namespace OHOS
96