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 <cstddef>
17#include <cstdint>
18#include <unistd.h>
19#include "serverstub_fuzzer.h"
20#include "message_parcel.h"
21#include "securec.h"
22#include "dhcp_server_service_impl.h"
23#include "dhcp_server_stub.h"
24#include "dhcp_manager_service_ipc_interface_code.h"
25#include "dhcp_fuzz_common_func.h"
26
27namespace OHOS {
28namespace DHCP {
29constexpr size_t U32_AT_SIZE_ZERO = 4;
30constexpr size_t MAP_SCAN_NUMS = 12;
31constexpr size_t DHCP_SLEEP_1 = 2;
32const std::u16string FORMMGR_INTERFACE_TOKEN = u"ohos.wifi.IDhcpServer";
33sptr<DhcpServerStub> pDhcpServerStub = DhcpServerServiceImpl::GetInstance();
34
35void OnGetSupportedFeaturesTest(const uint8_t* data, size_t size)
36{
37    uint32_t code = U32_AT(data) % MAP_SCAN_NUMS + static_cast<uint32_t>
38    (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_REG_CALL_BACK);
39    if (code == static_cast<uint32_t>(DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_GET_SERVER_STATUS) ||
40        code ==  static_cast<uint32_t>(DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_GET_IP_LIST)) {
41        return;
42    }
43    MessageParcel datas;
44    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
45    datas.WriteInt32(0);
46    datas.WriteBuffer(data, size);
47    datas.RewindRead(0);
48    MessageParcel reply;
49    MessageOption option;
50    pDhcpServerStub->OnRemoteRequest(code, datas, reply, option);
51}
52
53void OnRegisterCallBackTest(const uint8_t* data, size_t size)
54{
55    MessageParcel datas;
56    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
57    datas.WriteInt32(0);
58    datas.WriteBuffer(data, size);
59    datas.RewindRead(0);
60    MessageParcel reply;
61    MessageOption option;
62    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
63        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_REG_CALL_BACK), datas, reply, option);
64}
65
66void OnStopDhcpServerTest(const uint8_t* data, size_t size)
67{
68    MessageParcel datas;
69    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
70    datas.WriteInt32(0);
71    datas.WriteBuffer(data, size);
72    datas.RewindRead(0);
73    MessageParcel reply;
74    MessageOption option;
75    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
76        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_STOP_DHCP_SERVER), datas, reply, option);
77}
78
79void OnSetDhcpNameTest(const uint8_t* data, size_t size)
80{
81    MessageParcel datas;
82    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
83    datas.WriteInt32(0);
84    datas.WriteBuffer(data, size);
85    datas.RewindRead(0);
86    MessageParcel reply;
87    MessageOption option;
88    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
89        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_SET_DHCP_NAME), datas, reply, option);
90}
91
92void OnSetDhcpRangeTest(const uint8_t* data, size_t size)
93{
94    MessageParcel datas;
95    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
96    datas.WriteInt32(0);
97    datas.WriteBuffer(data, size);
98    datas.RewindRead(0);
99    MessageParcel reply;
100    MessageOption option;
101    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
102        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_SET_DHCP_RANGE), datas, reply, option);
103}
104
105void OnRemoveAllDhcpRangeTest(const uint8_t* data, size_t size)
106{
107    MessageParcel datas;
108    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
109    datas.WriteInt32(0);
110    datas.WriteBuffer(data, size);
111    datas.RewindRead(0);
112    MessageParcel reply;
113    MessageOption option;
114    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
115        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_REMOVE_ALL_DHCP_RANGE), datas, reply, option);
116}
117
118void OnRemoveDhcpRangeTest(const uint8_t* data, size_t size)
119{
120    MessageParcel datas;
121    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
122    datas.WriteInt32(0);
123    datas.WriteBuffer(data, size);
124    datas.RewindRead(0);
125    MessageParcel reply;
126    MessageOption option;
127    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
128        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_REMOVE_DHCP_RANGE), datas, reply, option);
129}
130
131void OnGetDhcpClientInfosTest(const uint8_t* data, size_t size)
132{
133    MessageParcel datas;
134    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
135    datas.WriteInt32(0);
136    datas.WriteBuffer(data, size);
137    datas.RewindRead(0);
138    MessageParcel reply;
139    MessageOption option;
140    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
141        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_GET_DHCP_CLIENT_INFO), datas, reply, option);
142}
143
144void OnUpdateLeasesTimeTest(const uint8_t* data, size_t size)
145{
146    MessageParcel datas;
147    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
148    datas.WriteInt32(0);
149    datas.WriteBuffer(data, size);
150    datas.RewindRead(0);
151    MessageParcel reply;
152    MessageOption option;
153    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
154        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_UPDATE_RENEW_TIME), datas, reply, option);
155}
156
157void OnPutDhcpRangeTest(const uint8_t* data, size_t size)
158{
159    MessageParcel datas;
160    datas.WriteInterfaceToken(FORMMGR_INTERFACE_TOKEN);
161    datas.WriteInt32(0);
162    datas.WriteBuffer(data, size);
163    datas.RewindRead(0);
164    MessageParcel reply;
165    MessageOption option;
166    pDhcpServerStub->OnRemoteRequest(static_cast<uint32_t>
167        (DhcpServerInterfaceCode::DHCP_SERVER_SVR_CMD_PUT_DHCP_RANGE), datas, reply, option);
168}
169
170/* Fuzzer entry point */
171extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
172{
173    if ((data == nullptr) || (size <= OHOS::DHCP::U32_AT_SIZE_ZERO)) {
174        return 0;
175    }
176    sleep(DHCP_SLEEP_1);
177    OHOS::DHCP::OnGetSupportedFeaturesTest(data, size);
178    OHOS::DHCP::OnRegisterCallBackTest(data, size);
179    OHOS::DHCP::OnStopDhcpServerTest(data, size);
180    OHOS::DHCP::OnSetDhcpNameTest(data, size);
181    OHOS::DHCP::OnSetDhcpRangeTest(data, size);
182    OHOS::DHCP::OnRemoveAllDhcpRangeTest(data, size);
183    OHOS::DHCP::OnRemoveDhcpRangeTest(data, size);
184    OHOS::DHCP::OnGetDhcpClientInfosTest(data, size);
185    OHOS::DHCP::OnUpdateLeasesTimeTest(data, size);
186    OHOS::DHCP::OnPutDhcpRangeTest(data, size);
187    return 0;
188}
189}  // namespace DHCP
190}  // namespace OHOS
191