1 /*
2  * Copyright (C) 2021 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 #ifndef OHOS_DHCP_OPTIONS_H
16 #define OHOS_DHCP_OPTIONS_H
17 
18 
19 #include <stdint.h>
20 #include <stdbool.h>
21 
22 #include "dhcp_client_def.h"
23 
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27 
28 uint8_t GetDhcpOptionDataLen(const uint8_t code);
29 const uint8_t *GetDhcpOption(const struct DhcpPacket *packet, int code, size_t *length);
30 bool GetDhcpOptionUint8(const struct DhcpPacket *packet, int code, uint8_t *data);
31 bool GetDhcpOptionUint32(const struct DhcpPacket *packet, int code, uint32_t *data);
32 bool GetDhcpOptionUint32n(const struct DhcpPacket *packet, int code, uint32_t *data1, uint32_t *data2);
33 char *GetDhcpOptionString(const struct DhcpPacket *packet, int code);
34 int GetEndOptionIndex(const uint8_t *pOpts);
35 int AddOptStrToOpts(uint8_t *pOpts, uint8_t *pOpt, int nOptLen);
36 int AddOptValueToOpts(uint8_t *pOpts, uint8_t code, uint32_t value);
37 
38 #ifdef __cplusplus
39 }
40 #endif
41 #endif
42