1 /* 2 * Copyright (C) 2021-2022 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 #ifndef OHOS_DHCP_ADDRESS_POOL_H 17 #define OHOS_DHCP_ADDRESS_POOL_H 18 19 #include <stdint.h> 20 #include "dhcp_binding.h" 21 #include "dhcp_define.h" 22 #include "dhcp_option.h" 23 #include "hash_table.h" 24 25 #ifdef __cplusplus 26 extern "C" { 27 #endif 28 29 typedef struct DhcpAddressPool DhcpAddressPool; 30 typedef AddressBinding *(*QueryBind)(uint8_t macAddr[DHCP_HWADDR_LENGTH], PDhcpOptionList cliOptins); 31 typedef AddressBinding *(*AddBind)(uint8_t macAddr[DHCP_HWADDR_LENGTH], PDhcpOptionList cliOptins); 32 typedef uint32_t (*Distribute)(DhcpAddressPool *pool, uint8_t macAddr[DHCP_HWADDR_LENGTH]); 33 34 typedef struct { 35 uint32_t beginAddress; 36 uint32_t endAddress; 37 } IpAddressRange; 38 39 struct DhcpAddressPool { 40 char ifname[IFACE_NAME_SIZE]; 41 uint32_t netmask; 42 IpAddressRange addressRange; 43 uint32_t serverId; 44 uint32_t gateway; 45 uint32_t leaseTime; 46 uint32_t renewalTime; 47 uint32_t rebindingTime; 48 uint32_t distribution; 49 Distribute distribue; 50 QueryBind binding; 51 AddBind newBinding; 52 HashTable leaseTable; 53 DhcpOptionList fixedOptions; 54 int initialized; 55 }; 56 57 int InitAddressPool(DhcpAddressPool *pool, const char *ifname, PDhcpOptionList options); 58 void FreeAddressPool(DhcpAddressPool *pool); 59 AddressBinding *FindBindingByIp(uint32_t bingdingIp); 60 int IsReserved(uint8_t macAddr[DHCP_HWADDR_LENGTH]); 61 int IsReservedIp(DhcpAddressPool *pool, uint32_t ipAddress); 62 int AddBinding(AddressBinding *binding); 63 int AddReservedBinding(uint8_t macAddr[DHCP_HWADDR_LENGTH]); 64 int RemoveReservedBinding(uint8_t macAddr[DHCP_HWADDR_LENGTH]); 65 int RemoveBinding(uint8_t macAddr[DHCP_HWADDR_LENGTH]); 66 int ReleaseBinding(uint8_t macAddr[DHCP_HWADDR_LENGTH]); 67 int AddLease(DhcpAddressPool *pool, AddressBinding *lease); 68 AddressBinding *GetLease(DhcpAddressPool *pool, uint32_t ipAddress); 69 int UpdateLease(DhcpAddressPool *pool, AddressBinding *lease); 70 int RemoveLease(DhcpAddressPool *pool, AddressBinding *lease); 71 int LoadBindingRecoders(DhcpAddressPool *pool); 72 int SaveBindingRecoders(const DhcpAddressPool *pool, int force); 73 AddressBinding *GetBindingByIp(HashTable *bindTable, uint32_t ipAddress); 74 AddressBinding *QueryBinding(uint8_t macAddr[DHCP_HWADDR_LENGTH], PDhcpOptionList cliOptins); 75 void SetDistributeMode(int mode); 76 int GetDistributeMode(void); 77 78 #ifdef __cplusplus 79 } 80 #endif 81 #endif 82