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 "dhcpaddresspool_fuzzer.h"
17
18 #include <cstddef>
19 #include <cstdint>
20 #include <unistd.h>
21 #include "securec.h"
22 #include "address_utils.h"
23 #include "dhcp_address_pool.h"
24 #include "dhcp_s_define.h"
25
26 namespace OHOS {
27 namespace DHCP {
28 constexpr size_t DHCP_SLEEP_1 = 2;
29 constexpr size_t U32_AT_SIZE_ZERO = 4;
30
DhcpAddressPoolFuzzTest(const uint8_t * data,size_t size)31 void DhcpAddressPoolFuzzTest(const uint8_t* data, size_t size)
32 {
33 AddressBinding binding;
34 memcpy_s(binding.chaddr, PID_MAX_LEN, "*", PID_MAX_LEN);
35 binding.ipAddress = static_cast<uint32_t>(data[0]);
36 binding.clientId = static_cast<uint32_t>(data[0]);
37 binding.bindingTime = static_cast<uint64_t>(data[0]);
38 binding.pendingTime = static_cast<uint64_t>(data[0]);
39 binding.expireIn = static_cast<uint64_t>(data[0]);
40 binding.leaseTime = static_cast<uint64_t>(data[0]);
41 binding.pendingInterval = static_cast<uint64_t>(data[0]);
42 DhcpAddressPool pool;
43 strncpy_s(pool.ifname, IFACE_NAME_SIZE, "*", IFACE_NAME_SIZE - 1);
44 pool.netmask = static_cast<uint32_t>(data[0]);
45 pool.serverId = static_cast<uint32_t>(data[0]);
46 pool.gateway = static_cast<uint32_t>(data[0]);
47 pool.leaseTime = static_cast<uint32_t>(data[0]);
48 pool.renewalTime = static_cast<uint32_t>(data[0]);
49 DhcpOptionList options;
50 options.size = static_cast<uint32_t>(data[0]);
51 const char *ifname = "wlan0";
52 uint32_t ipAdd = 0;
53 memcpy_s(&ipAdd, sizeof(uint32_t), "192.168.100.1", sizeof(uint32_t));
54 int force = static_cast<int>(data[0]);
55 int mode = static_cast<int>(data[0]);
56 uint8_t macAddr[DHCP_HWADDR_LENGTH];
57 InitAddressPool(&pool, ifname, &options);
58 FreeAddressPool(&pool);
59 IsReservedIp(&pool, ipAdd);
60 AddReservedBinding(&macAddr[0]);
61 RemoveReservedBinding(&macAddr[0]);
62 RemoveBinding(&macAddr[0]);
63 AddBinding(&binding);
64 AddLease(&pool, &binding);
65 GetLease(&pool, ipAdd);
66 UpdateLease(&pool, &binding);
67 RemoveLease(&pool, &binding);
68 LoadBindingRecoders(&pool);
69 SaveBindingRecoders(&pool, force);
70 QueryBinding(macAddr, &options);
71 SetDistributeMode(mode);
72 GetDistributeMode();
73 DeleteMacInLease(&pool, &binding);
74 DeleteMacInLease(nullptr, &binding);
75 DeleteMacInLease(&pool, nullptr);
76 }
77
FindBindingByIpFuzzTest(const uint8_t * data,size_t size)78 void FindBindingByIpFuzzTest(const uint8_t* data, size_t size)
79 {
80 uint32_t ipAddress1 = ParseIpAddr("192.168.100.1");
81 uint32_t ipAddress2 = ParseIpAddr("192.168.100.2");
82 FindBindingByIp(ipAddress1);
83 FindBindingByIp(ipAddress2);
84 }
85
DhcpMacAddrFuzzTest(const uint8_t * data,size_t size)86 void DhcpMacAddrFuzzTest(const uint8_t* data, size_t size)
87 {
88 uint8_t testMac1[DHCP_HWADDR_LENGTH] = {0x00, 0x0e, 0x3c, 0x65, 0x3a, 0x09, 0};
89 uint8_t testMac2[DHCP_HWADDR_LENGTH] = {0x00, 0x0e, 0x3c, 0x65, 0x3a, 0x0b, 0};
90 uint8_t testMac3[DHCP_HWADDR_LENGTH] = {0x00, 0x0e, 0x3c, 0x65, 0x3a, 0x0a, 0};
91 ReleaseBinding((testMac1));
92 ReleaseBinding((testMac2));
93 IsReserved((testMac1));
94 IsReserved((testMac3));
95 }
96
97 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)98 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
99 {
100 if ((data == nullptr) || (size <= OHOS::DHCP::U32_AT_SIZE_ZERO)) {
101 return 0;
102 }
103 sleep(DHCP_SLEEP_1);
104 OHOS::DHCP::DhcpAddressPoolFuzzTest(data, size);
105 OHOS::DHCP::FindBindingByIpFuzzTest(data, size);
106 OHOS::DHCP::DhcpMacAddrFuzzTest(data, size);
107 return 0;
108 }
109 } // namespace DHCP
110 } // namespace OHOS
111