859 lines
25 KiB
C
859 lines
25 KiB
C
#include "lwip/inet.h"
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#include "lwip/err.h"
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#include "lwip/pbuf.h"
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#include "lwip/udp.h"
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#include "lwip/mem.h"
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//#include "crypto/common.h"
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#include "osapi.h"
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#include "lwip/app/dhcpserver.h"
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#ifndef LWIP_OPEN_SRC
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#include "net80211/ieee80211_var.h"
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#endif
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#include "user_interface.h"
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////////////////////////////////////////////////////////////////////////////////////
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static const uint8_t xid[4] = {0xad, 0xde, 0x12, 0x23};
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static u8_t old_xid[4] = {0};
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static const uint8_t magic_cookie[4] = {99, 130, 83, 99};
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static struct udp_pcb *pcb_dhcps = NULL;
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static struct ip_addr broadcast_dhcps;
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static struct ip_addr server_address;
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static struct ip_addr client_address;//added
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static struct ip_addr client_address_plus;
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static struct dhcps_msg msg_dhcps;
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struct dhcps_state s;
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static struct dhcps_lease dhcps_lease;
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static bool dhcps_lease_flag = true;
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static list_node *plist = NULL;
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/******************************************************************************
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* FunctionName : node_insert_to_list
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* Description : insert the node to the list
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* Parameters : arg -- Additional argument to pass to the callback function
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* Returns : none
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*******************************************************************************/
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void ICACHE_FLASH_ATTR node_insert_to_list(list_node **phead, list_node* pinsert)
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{
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list_node *plist = NULL;
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if (*phead == NULL)
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*phead = pinsert;
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else {
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plist = *phead;
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while (plist->pnext != NULL) {
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plist = plist->pnext;
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}
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plist->pnext = pinsert;
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}
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pinsert->pnext = NULL;
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}
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/******************************************************************************
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* FunctionName : node_delete_from_list
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* Description : remove the node from list
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* Parameters : arg -- Additional argument to pass to the callback function
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* Returns : none
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*******************************************************************************/
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void ICACHE_FLASH_ATTR node_remove_from_list(list_node **phead, list_node* pdelete)
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{
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list_node *plist = NULL;
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plist = *phead;
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if (plist == NULL){
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*phead = NULL;
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} else {
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if (plist == pdelete){
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*phead = plist->pnext;
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} else {
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while (plist != NULL) {
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if (plist->pnext == pdelete){
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plist->pnext = pdelete->pnext;
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}
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plist = plist->pnext;
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}
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}
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}
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><>DHCP msg<73><67>Ϣ<EFBFBD>ṹ<EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* @param optptr -- DHCP msg<73><67>Ϣλ<CFA2><CEBB>
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* @param type -- Ҫ<><D2AA>ӵ<EFBFBD><D3B5><EFBFBD><EFBFBD><EFBFBD>option
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*
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* @return uint8_t* <20><><EFBFBD><EFBFBD>DHCP msgƫ<67>Ƶ<EFBFBD>ַ
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*/
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///////////////////////////////////////////////////////////////////////////////////
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static uint8_t* ICACHE_FLASH_ATTR add_msg_type(uint8_t *optptr, uint8_t type)
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{
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*optptr++ = DHCP_OPTION_MSG_TYPE;
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*optptr++ = 1;
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*optptr++ = type;
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return optptr;
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><>DHCP msg<73>ṹ<EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>offerӦ<72><D3A6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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*
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* @param optptr -- DHCP msg<73><67>Ϣλ<CFA2><CEBB>
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*
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* @return uint8_t* <20><><EFBFBD><EFBFBD>DHCP msgƫ<67>Ƶ<EFBFBD>ַ
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*/
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///////////////////////////////////////////////////////////////////////////////////
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static uint8_t* ICACHE_FLASH_ATTR add_offer_options(uint8_t *optptr)
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{
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struct ip_addr ipadd;
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ipadd.addr = *( (uint32_t *) &server_address);
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#ifdef USE_CLASS_B_NET
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*optptr++ = DHCP_OPTION_SUBNET_MASK;
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*optptr++ = 4; //length
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*optptr++ = 255;
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*optptr++ = 240;
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*optptr++ = 0;
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*optptr++ = 0;
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#else
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*optptr++ = DHCP_OPTION_SUBNET_MASK;
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*optptr++ = 4;
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*optptr++ = 255;
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*optptr++ = 255;
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*optptr++ = 255;
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*optptr++ = 0;
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#endif
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*optptr++ = DHCP_OPTION_LEASE_TIME;
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*optptr++ = 4;
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*optptr++ = 0x00;
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*optptr++ = 0x01;
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*optptr++ = 0x51;
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*optptr++ = 0x80;
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*optptr++ = DHCP_OPTION_SERVER_ID;
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*optptr++ = 4;
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*optptr++ = ip4_addr1( &ipadd);
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*optptr++ = ip4_addr2( &ipadd);
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*optptr++ = ip4_addr3( &ipadd);
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*optptr++ = ip4_addr4( &ipadd);
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*optptr++ = DHCP_OPTION_ROUTER;
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*optptr++ = 4;
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*optptr++ = ip4_addr1( &ipadd);
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*optptr++ = ip4_addr2( &ipadd);
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*optptr++ = ip4_addr3( &ipadd);
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*optptr++ = ip4_addr4( &ipadd);
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#ifdef USE_DNS
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*optptr++ = DHCP_OPTION_DNS_SERVER;
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*optptr++ = 4;
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*optptr++ = ip4_addr1( &ipadd);
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*optptr++ = ip4_addr2( &ipadd);
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*optptr++ = ip4_addr3( &ipadd);
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*optptr++ = ip4_addr4( &ipadd);
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#endif
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#ifdef CLASS_B_NET
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*optptr++ = DHCP_OPTION_BROADCAST_ADDRESS;
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*optptr++ = 4;
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*optptr++ = ip4_addr1( &ipadd);
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*optptr++ = 255;
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*optptr++ = 255;
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*optptr++ = 255;
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#else
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*optptr++ = DHCP_OPTION_BROADCAST_ADDRESS;
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*optptr++ = 4;
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*optptr++ = ip4_addr1( &ipadd);
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*optptr++ = ip4_addr2( &ipadd);
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*optptr++ = ip4_addr3( &ipadd);
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*optptr++ = 255;
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#endif
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*optptr++ = DHCP_OPTION_INTERFACE_MTU;
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*optptr++ = 2;
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#ifdef CLASS_B_NET
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*optptr++ = 0x05;
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*optptr++ = 0xdc;
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#else
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*optptr++ = 0x02;
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*optptr++ = 0x40;
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#endif
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*optptr++ = DHCP_OPTION_PERFORM_ROUTER_DISCOVERY;
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*optptr++ = 1;
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*optptr++ = 0x00;
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*optptr++ = 43;
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*optptr++ = 6;
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*optptr++ = 0x01;
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*optptr++ = 4;
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*optptr++ = 0x00;
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*optptr++ = 0x00;
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*optptr++ = 0x00;
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*optptr++ = 0x02;
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return optptr;
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><>DHCP msg<73>ṹ<EFBFBD><E1B9B9><EFBFBD><EFBFBD>ӽ<EFBFBD><D3BD><EFBFBD><EFBFBD>־<EFBFBD><D6BE><EFBFBD><EFBFBD>
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*
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* @param optptr -- DHCP msg<73><67>Ϣλ<CFA2><CEBB>
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*
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* @return uint8_t* <20><><EFBFBD><EFBFBD>DHCP msgƫ<67>Ƶ<EFBFBD>ַ
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*/
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///////////////////////////////////////////////////////////////////////////////////
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static uint8_t* ICACHE_FLASH_ATTR add_end(uint8_t *optptr)
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{
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*optptr++ = DHCP_OPTION_END;
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return optptr;
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>DHCP msg<73>ṹ<EFBFBD><E1B9B9>
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*
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* @param -- m ָ<><EFBFBD><F2B4B4BD><EFBFBD>DHCP msg<73>ṹ<EFBFBD><E1B9B9><EFBFBD><EFBFBD><EFBFBD>?
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*/
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///////////////////////////////////////////////////////////////////////////////////
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static void ICACHE_FLASH_ATTR create_msg(struct dhcps_msg *m)
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{
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struct ip_addr client;
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client.addr = *( (uint32_t *) &client_address);
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m->op = DHCP_REPLY;
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m->htype = DHCP_HTYPE_ETHERNET;
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m->hlen = 6;
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m->hops = 0;
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os_memcpy((char *) xid, (char *) m->xid, sizeof(m->xid));
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m->secs = 0;
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m->flags = htons(BOOTP_BROADCAST);
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os_memcpy((char *) m->yiaddr, (char *) &client.addr, sizeof(m->yiaddr));
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os_memset((char *) m->ciaddr, 0, sizeof(m->ciaddr));
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os_memset((char *) m->siaddr, 0, sizeof(m->siaddr));
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os_memset((char *) m->giaddr, 0, sizeof(m->giaddr));
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os_memset((char *) m->sname, 0, sizeof(m->sname));
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os_memset((char *) m->file, 0, sizeof(m->file));
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os_memset((char *) m->options, 0, sizeof(m->options));
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os_memcpy((char *) m->options, (char *) magic_cookie, sizeof(magic_cookie));
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>OFFER
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*
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* @param -- m ָ<><D6B8><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>͵<EFBFBD>DHCP msg<73><67><EFBFBD><EFBFBD>
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*/
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///////////////////////////////////////////////////////////////////////////////////
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static void ICACHE_FLASH_ATTR send_offer(struct dhcps_msg *m)
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{
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uint8_t *end;
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struct pbuf *p, *q;
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u8_t *data;
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u16_t cnt=0;
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u16_t i;
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err_t SendOffer_err_t;
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create_msg(m);
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end = add_msg_type(&m->options[4], DHCPOFFER);
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end = add_offer_options(end);
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end = add_end(end);
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p = pbuf_alloc(PBUF_TRANSPORT, sizeof(struct dhcps_msg), PBUF_RAM);
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#if DHCPS_DEBUG
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os_printf("udhcp: send_offer>>p->ref = %d\n", p->ref);
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#endif
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if(p != NULL){
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#if DHCPS_DEBUG
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os_printf("dhcps: send_offer>>pbuf_alloc succeed\n");
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os_printf("dhcps: send_offer>>p->tot_len = %d\n", p->tot_len);
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os_printf("dhcps: send_offer>>p->len = %d\n", p->len);
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#endif
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q = p;
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while(q != NULL){
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data = (u8_t *)q->payload;
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for(i=0; i<q->len; i++)
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{
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data[i] = ((u8_t *) m)[cnt++];
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#if DHCPS_DEBUG
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os_printf("%02x ",data[i]);
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if((i+1)%16 == 0){
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os_printf("\n");
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}
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#endif
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}
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q = q->next;
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}
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}else{
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#if DHCPS_DEBUG
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os_printf("dhcps: send_offer>>pbuf_alloc failed\n");
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#endif
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return;
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}
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SendOffer_err_t = udp_sendto( pcb_dhcps, p, &broadcast_dhcps, DHCPS_CLIENT_PORT );
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#if DHCPS_DEBUG
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os_printf("dhcps: send_offer>>udp_sendto result %x\n",SendOffer_err_t);
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#endif
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if(p->ref != 0){
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#if DHCPS_DEBUG
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os_printf("udhcp: send_offer>>free pbuf\n");
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#endif
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pbuf_free(p);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>NAK<41><4B>Ϣ
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*
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* @param m ָ<><D6B8><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>͵<EFBFBD>DHCP msg<73><67><EFBFBD><EFBFBD>
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*/
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///////////////////////////////////////////////////////////////////////////////////
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static void ICACHE_FLASH_ATTR send_nak(struct dhcps_msg *m)
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{
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u8_t *end;
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struct pbuf *p, *q;
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u8_t *data;
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u16_t cnt=0;
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u16_t i;
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err_t SendNak_err_t;
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create_msg(m);
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end = add_msg_type(&m->options[4], DHCPNAK);
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end = add_end(end);
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p = pbuf_alloc(PBUF_TRANSPORT, sizeof(struct dhcps_msg), PBUF_RAM);
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#if DHCPS_DEBUG
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os_printf("udhcp: send_nak>>p->ref = %d\n", p->ref);
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#endif
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if(p != NULL){
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#if DHCPS_DEBUG
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os_printf("dhcps: send_nak>>pbuf_alloc succeed\n");
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os_printf("dhcps: send_nak>>p->tot_len = %d\n", p->tot_len);
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os_printf("dhcps: send_nak>>p->len = %d\n", p->len);
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#endif
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q = p;
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while(q != NULL){
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data = (u8_t *)q->payload;
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for(i=0; i<q->len; i++)
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{
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data[i] = ((u8_t *) m)[cnt++];
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#if DHCPS_DEBUG
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os_printf("%02x ",data[i]);
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if((i+1)%16 == 0){
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os_printf("\n");
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}
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#endif
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}
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q = q->next;
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}
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}else{
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#if DHCPS_DEBUG
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os_printf("dhcps: send_nak>>pbuf_alloc failed\n");
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#endif
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return;
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}
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SendNak_err_t = udp_sendto( pcb_dhcps, p, &broadcast_dhcps, DHCPS_CLIENT_PORT );
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#if DHCPS_DEBUG
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os_printf("dhcps: send_nak>>udp_sendto result %x\n",SendNak_err_t);
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#endif
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if(p->ref != 0){
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#if DHCPS_DEBUG
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os_printf("udhcp: send_nak>>free pbuf\n");
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#endif
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pbuf_free(p);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ACK<43><4B>DHCP<43>ͻ<EFBFBD><CDBB><EFBFBD>
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*
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* @param m ָ<><D6B8><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD>͵<EFBFBD>DHCP msg<73><67><EFBFBD><EFBFBD>
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*/
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///////////////////////////////////////////////////////////////////////////////////
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static void ICACHE_FLASH_ATTR send_ack(struct dhcps_msg *m)
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{
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u8_t *end;
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struct pbuf *p, *q;
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u8_t *data;
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u16_t cnt=0;
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u16_t i;
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err_t SendAck_err_t;
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create_msg(m);
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end = add_msg_type(&m->options[4], DHCPACK);
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end = add_offer_options(end);
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end = add_end(end);
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p = pbuf_alloc(PBUF_TRANSPORT, sizeof(struct dhcps_msg), PBUF_RAM);
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#if DHCPS_DEBUG
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os_printf("udhcp: send_ack>>p->ref = %d\n", p->ref);
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#endif
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if(p != NULL){
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#if DHCPS_DEBUG
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os_printf("dhcps: send_ack>>pbuf_alloc succeed\n");
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os_printf("dhcps: send_ack>>p->tot_len = %d\n", p->tot_len);
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os_printf("dhcps: send_ack>>p->len = %d\n", p->len);
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#endif
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q = p;
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while(q != NULL){
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data = (u8_t *)q->payload;
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for(i=0; i<q->len; i++)
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{
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data[i] = ((u8_t *) m)[cnt++];
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#if DHCPS_DEBUG
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os_printf("%02x ",data[i]);
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if((i+1)%16 == 0){
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os_printf("\n");
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}
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#endif
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}
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q = q->next;
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}
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}else{
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#if DHCPS_DEBUG
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os_printf("dhcps: send_ack>>pbuf_alloc failed\n");
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#endif
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return;
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}
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SendAck_err_t = udp_sendto( pcb_dhcps, p, &broadcast_dhcps, DHCPS_CLIENT_PORT );
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#if DHCPS_DEBUG
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os_printf("dhcps: send_ack>>udp_sendto result %x\n",SendAck_err_t);
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#endif
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if(p->ref != 0){
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#if DHCPS_DEBUG
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os_printf("udhcp: send_ack>>free pbuf\n");
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#endif
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pbuf_free(p);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////
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/*
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* <20><><EFBFBD><EFBFBD>DHCP<43>ͻ<EFBFBD><CDBB>˷<EFBFBD><CBB7><EFBFBD><EFBFBD><EFBFBD>DHCP<43><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD><EFBFBD>Բ<EFBFBD>ͬ<EFBFBD><CDAC>DHCP<43><50><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>Ӧ<EFBFBD><D3A6>
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*
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* @param optptr DHCP msg<73>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
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* @param len <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4>?(byte)
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*
|
||
* @return uint8_t <20><><EFBFBD>ش<EFBFBD><D8B4><EFBFBD><EFBFBD><EFBFBD>DHCP Server״ֵ̬
|
||
*/
|
||
///////////////////////////////////////////////////////////////////////////////////
|
||
static uint8_t ICACHE_FLASH_ATTR parse_options(uint8_t *optptr, sint16_t len)
|
||
{
|
||
struct ip_addr client;
|
||
bool is_dhcp_parse_end = false;
|
||
|
||
client.addr = *( (uint32_t *) &client_address);// Ҫ<><D2AA><EFBFBD><EFBFBD><EFBFBD>DHCP<43>ͻ<EFBFBD><CDBB>˵<EFBFBD>IP
|
||
|
||
u8_t *end = optptr + len;
|
||
u16_t type = 0;
|
||
|
||
s.state = DHCPS_STATE_IDLE;
|
||
|
||
while (optptr < end) {
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: (sint16_t)*optptr = %d\n", (sint16_t)*optptr);
|
||
#endif
|
||
switch ((sint16_t) *optptr) {
|
||
|
||
case DHCP_OPTION_MSG_TYPE: //53
|
||
type = *(optptr + 2);
|
||
break;
|
||
|
||
case DHCP_OPTION_REQ_IPADDR://50
|
||
if( os_memcmp( (char *) &client.addr, (char *) optptr+2,4)==0 ) {
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: DHCP_OPTION_REQ_IPADDR = 0 ok\n");
|
||
#endif
|
||
s.state = DHCPS_STATE_ACK;
|
||
}else {
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: DHCP_OPTION_REQ_IPADDR != 0 err\n");
|
||
#endif
|
||
s.state = DHCPS_STATE_NAK;
|
||
}
|
||
break;
|
||
case DHCP_OPTION_END:
|
||
{
|
||
is_dhcp_parse_end = true;
|
||
}
|
||
break;
|
||
}
|
||
|
||
if(is_dhcp_parse_end){
|
||
break;
|
||
}
|
||
|
||
optptr += optptr[1] + 2;
|
||
}
|
||
|
||
switch (type){
|
||
|
||
case DHCPDISCOVER://1
|
||
s.state = DHCPS_STATE_OFFER;
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: DHCPD_STATE_OFFER\n");
|
||
#endif
|
||
break;
|
||
|
||
case DHCPREQUEST://3
|
||
if ( !(s.state == DHCPS_STATE_ACK || s.state == DHCPS_STATE_NAK) ) {
|
||
s.state = DHCPS_STATE_NAK;
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: DHCPD_STATE_NAK\n");
|
||
#endif
|
||
}
|
||
break;
|
||
|
||
case DHCPDECLINE://4
|
||
s.state = DHCPS_STATE_IDLE;
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: DHCPD_STATE_IDLE\n");
|
||
#endif
|
||
break;
|
||
|
||
case DHCPRELEASE://7
|
||
s.state = DHCPS_STATE_IDLE;
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: DHCPD_STATE_IDLE\n");
|
||
#endif
|
||
break;
|
||
}
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: return s.state = %d\n", s.state);
|
||
#endif
|
||
return s.state;
|
||
}
|
||
///////////////////////////////////////////////////////////////////////////////////
|
||
///////////////////////////////////////////////////////////////////////////////////
|
||
static sint16_t ICACHE_FLASH_ATTR parse_msg(struct dhcps_msg *m, u16_t len)
|
||
{
|
||
if(os_memcmp((char *)m->options,
|
||
(char *)magic_cookie,
|
||
sizeof(magic_cookie)) == 0){
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: len = %d\n", len);
|
||
#endif
|
||
/*
|
||
* <20><>¼<EFBFBD><C2BC>ǰ<EFBFBD><C7B0>xid<69><64><EFBFBD>ﴦ<EFBFBD><EFB4A6><EFBFBD>?
|
||
* <20>˺<EFBFBD>ΪDHCP<43>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>ͳһ<CDB3><D2BB>ȡIPʱ<50><CAB1>
|
||
*/
|
||
// if((old_xid[0] == 0) &&
|
||
// (old_xid[1] == 0) &&
|
||
// (old_xid[2] == 0) &&
|
||
// (old_xid[3] == 0)){
|
||
// /*
|
||
// * old_xidδ<64><CEB4>¼<EFBFBD>κ<EFBFBD><CEBA><EFBFBD><EFBFBD>?
|
||
// * <20>϶<EFBFBD><CFB6>ǵ<EFBFBD>һ<EFBFBD><D2BB>ʹ<EFBFBD><CAB9>
|
||
// */
|
||
// os_memcpy((char *)old_xid, (char *)m->xid, sizeof(m->xid));
|
||
// }else{
|
||
// /*
|
||
// * <20><><EFBFBD>δ<EFBFBD><CEB4><EFBFBD><EFBFBD>DHCP msg<73><67>Я<EFBFBD><D0AF><EFBFBD>xid<69><64><EFBFBD>ϴμ<CFB4>¼<EFBFBD>IJ<EFBFBD>ͬ<EFBFBD><CDAC>
|
||
// * <20>϶<EFBFBD>Ϊ<EFBFBD><CEAA>ͬ<EFBFBD><CDAC>DHCP<43>ͻ<EFBFBD><CDBB>˷<EFBFBD><CBB7>ͣ<EFBFBD><CDA3><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>Ŀͻ<C4BF><CDBB><EFBFBD>IP
|
||
// * <20><><EFBFBD><EFBFBD> 192.168.4.100(0x6404A8C0) <--> 192.168.4.200(0xC804A8C0)
|
||
// *
|
||
// */
|
||
// if(os_memcmp((char *)old_xid, (char *)m->xid, sizeof(m->xid)) != 0){
|
||
/*
|
||
* <20><>¼<EFBFBD><C2BC><EFBFBD>ε<EFBFBD>xid<69>ţ<EFBFBD>ͬʱ<CDAC><CAB1><EFBFBD><EFBFBD><EFBFBD>IP<49><50><EFBFBD><EFBFBD>
|
||
*/
|
||
struct ip_addr addr_tmp;
|
||
os_memcpy((char *)old_xid, (char *)m->xid, sizeof(m->xid));
|
||
|
||
{
|
||
struct dhcps_pool *pdhcps_pool = NULL;
|
||
list_node *pnode = NULL;
|
||
list_node *pback_node = NULL;
|
||
|
||
POOL_START:
|
||
client_address.addr = client_address_plus.addr;
|
||
// addr_tmp.addr = htonl(client_address_plus.addr);
|
||
// addr_tmp.addr++;
|
||
// client_address_plus.addr = htonl(addr_tmp.addr);
|
||
for (pback_node = plist; pback_node != NULL;pback_node = pback_node->pnext) {
|
||
pdhcps_pool = pback_node->pnode;
|
||
if (os_memcmp(pdhcps_pool->mac, m->chaddr, sizeof(pdhcps_pool->mac)) == 0){
|
||
// os_printf("the same device request ip\n");
|
||
client_address.addr = pdhcps_pool->ip.addr;
|
||
pdhcps_pool->lease_timer = DHCPS_LEASE_TIMER;
|
||
goto POOL_CHECK;
|
||
} else if (pdhcps_pool->ip.addr == client_address_plus.addr){
|
||
// client_address.addr = client_address_plus.addr;
|
||
// os_printf("the ip addr has been request\n");
|
||
addr_tmp.addr = htonl(client_address_plus.addr);
|
||
addr_tmp.addr++;
|
||
client_address_plus.addr = htonl(addr_tmp.addr);
|
||
client_address.addr = client_address_plus.addr;
|
||
}
|
||
}
|
||
pdhcps_pool = (struct dhcps_pool *)os_zalloc(sizeof(struct dhcps_pool));
|
||
pdhcps_pool->ip.addr = client_address.addr;
|
||
os_memcpy(pdhcps_pool->mac, m->chaddr, sizeof(pdhcps_pool->mac));
|
||
pdhcps_pool->lease_timer = DHCPS_LEASE_TIMER;
|
||
pnode = (list_node *)os_zalloc(sizeof(list_node ));
|
||
pnode->pnode = pdhcps_pool;
|
||
node_insert_to_list(&plist,pnode);
|
||
|
||
POOL_CHECK:
|
||
if ((client_address_plus.addr > dhcps_lease.end_ip) || (ip_addr_isany(&client_address))){
|
||
client_address_plus.addr = dhcps_lease.start_ip;
|
||
goto POOL_START;
|
||
}
|
||
|
||
if (wifi_softap_set_station_info(m->chaddr, &client_address) == false) {
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: xid changed\n");
|
||
os_printf("dhcps: client_address.addr = %x\n", client_address.addr);
|
||
#endif
|
||
|
||
// }
|
||
|
||
// }
|
||
|
||
return parse_options(&m->options[4], len);
|
||
}
|
||
return 0;
|
||
}
|
||
///////////////////////////////////////////////////////////////////////////////////
|
||
/*
|
||
* DHCP <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD><DDB0><EFBFBD>մ<EFBFBD><D5B4><EFBFBD>ص<EFBFBD><D8B5><EFBFBD><EFBFBD><EFBFBD>˺<EFBFBD><CBBA><EFBFBD><EFBFBD><EFBFBD>LWIP UDPģ<50><C4A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
* <20><>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD>udp_recv()<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>LWIP<49><50><EFBFBD><EFBFBD>ע<EFBFBD><D7A2>.
|
||
*
|
||
* @param arg
|
||
* @param pcb <20><><EFBFBD>յ<EFBFBD>UDP<44><50>Ŀ<EFBFBD><C4BF>ƿ<EFBFBD>?
|
||
* @param p <20><><EFBFBD>յ<EFBFBD><D5B5><EFBFBD>UDP<44>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>?
|
||
* @param addr <20><><EFBFBD>ʹ<EFBFBD>UDP<44><50><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>IP<49><50>ַ
|
||
* @param port <20><><EFBFBD>ʹ<EFBFBD>UDP<44><50><EFBFBD>Դ<EFBFBD><D4B4><EFBFBD><EFBFBD><EFBFBD>UDPͨ<50><CDA8><EFBFBD>˿ں<CBBF>
|
||
*/
|
||
///////////////////////////////////////////////////////////////////////////////////
|
||
static void ICACHE_FLASH_ATTR handle_dhcp(void *arg,
|
||
struct udp_pcb *pcb,
|
||
struct pbuf *p,
|
||
struct ip_addr *addr,
|
||
uint16_t port)
|
||
{
|
||
|
||
sint16_t tlen;
|
||
u16_t i;
|
||
u16_t dhcps_msg_cnt=0;
|
||
u8_t *p_dhcps_msg = (u8_t *)&msg_dhcps;
|
||
u8_t *data;
|
||
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> receive a packet\n");
|
||
#endif
|
||
if (p==NULL) return;
|
||
|
||
tlen = p->tot_len;
|
||
data = p->payload;
|
||
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> p->tot_len = %d\n", tlen);
|
||
os_printf("dhcps: handle_dhcp-> p->len = %d\n", p->len);
|
||
#endif
|
||
|
||
os_memset(&msg_dhcps, 0, sizeof(dhcps_msg));
|
||
for(i=0; i<p->len; i++){
|
||
p_dhcps_msg[dhcps_msg_cnt++] = data[i];
|
||
#if DHCPS_DEBUG
|
||
os_printf("%02x ",data[i]);
|
||
if((i+1)%16 == 0){
|
||
os_printf("\n");
|
||
}
|
||
#endif
|
||
}
|
||
|
||
if(p->next != NULL) {
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> p->next != NULL\n");
|
||
os_printf("dhcps: handle_dhcp-> p->next->tot_len = %d\n",p->next->tot_len);
|
||
os_printf("dhcps: handle_dhcp-> p->next->len = %d\n",p->next->len);
|
||
#endif
|
||
|
||
data = p->next->payload;
|
||
for(i=0; i<p->next->len; i++){
|
||
p_dhcps_msg[dhcps_msg_cnt++] = data[i];
|
||
#if DHCPS_DEBUG
|
||
os_printf("%02x ",data[i]);
|
||
if((i+1)%16 == 0){
|
||
os_printf("\n");
|
||
}
|
||
#endif
|
||
}
|
||
}
|
||
|
||
/*
|
||
* DHCP <20>ͻ<EFBFBD><CDBB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><CFA2><EFBFBD><EFBFBD>
|
||
*/
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> parse_msg(p)\n");
|
||
#endif
|
||
|
||
switch(parse_msg(&msg_dhcps, tlen - 240)) {
|
||
|
||
case DHCPS_STATE_OFFER://1
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> DHCPD_STATE_OFFER\n");
|
||
#endif
|
||
send_offer(&msg_dhcps);
|
||
break;
|
||
case DHCPS_STATE_ACK://3
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> DHCPD_STATE_ACK\n");
|
||
#endif
|
||
send_ack(&msg_dhcps);
|
||
break;
|
||
case DHCPS_STATE_NAK://4
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> DHCPD_STATE_NAK\n");
|
||
#endif
|
||
send_nak(&msg_dhcps);
|
||
break;
|
||
default :
|
||
break;
|
||
}
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps: handle_dhcp-> pbuf_free(p)\n");
|
||
#endif
|
||
pbuf_free(p);
|
||
}
|
||
///////////////////////////////////////////////////////////////////////////////////
|
||
static void ICACHE_FLASH_ATTR wifi_softap_init_dhcps_lease(uint32 ip)
|
||
{
|
||
uint32 softap_ip = 0,local_ip = 0;
|
||
|
||
if (dhcps_lease_flag) {
|
||
local_ip = softap_ip = htonl(ip);
|
||
softap_ip &= 0xFFFFFF00;
|
||
local_ip &= 0xFF;
|
||
if (local_ip >= 0x80)
|
||
local_ip -= DHCPS_MAX_LEASE;
|
||
else
|
||
local_ip ++;
|
||
|
||
os_bzero(&dhcps_lease, sizeof(dhcps_lease));
|
||
dhcps_lease.start_ip = softap_ip | local_ip;
|
||
dhcps_lease.end_ip = softap_ip | (local_ip + DHCPS_MAX_LEASE);
|
||
}
|
||
dhcps_lease.start_ip = htonl(dhcps_lease.start_ip);
|
||
dhcps_lease.end_ip= htonl(dhcps_lease.end_ip);
|
||
// os_printf("start_ip = 0x%x, end_ip = 0x%x\n",dhcps_lease.start_ip, dhcps_lease.end_ip);
|
||
}
|
||
///////////////////////////////////////////////////////////////////////////////////
|
||
void ICACHE_FLASH_ATTR dhcps_start(struct ip_info *info)
|
||
{
|
||
os_memset(&msg_dhcps, 0, sizeof(dhcps_msg));
|
||
pcb_dhcps = udp_new();
|
||
if (pcb_dhcps == NULL || info ==NULL) {
|
||
os_printf("dhcps_start(): could not obtain pcb\n");
|
||
}
|
||
|
||
IP4_ADDR(&broadcast_dhcps, 255, 255, 255, 255);
|
||
|
||
server_address = info->ip;
|
||
wifi_softap_init_dhcps_lease(server_address.addr);
|
||
client_address_plus.addr = dhcps_lease.start_ip;
|
||
|
||
udp_bind(pcb_dhcps, IP_ADDR_ANY, DHCPS_SERVER_PORT);
|
||
udp_recv(pcb_dhcps, handle_dhcp, NULL);
|
||
#if DHCPS_DEBUG
|
||
os_printf("dhcps:dhcps_start->udp_recv function Set a receive callback handle_dhcp for UDP_PCB pcb_dhcps\n");
|
||
#endif
|
||
|
||
}
|
||
|
||
void ICACHE_FLASH_ATTR dhcps_stop(void)
|
||
{
|
||
udp_disconnect(pcb_dhcps);
|
||
udp_remove(pcb_dhcps);
|
||
list_node *pnode = NULL;
|
||
list_node *pback_node = NULL;
|
||
pnode = plist;
|
||
while (pnode != NULL) {
|
||
pback_node = pnode;
|
||
pnode = pback_node->pnext;
|
||
node_remove_from_list(&plist, pback_node);
|
||
os_free(pback_node->pnode);
|
||
pback_node->pnode = NULL;
|
||
os_free(pback_node);
|
||
pback_node = NULL;
|
||
}
|
||
}
|
||
|
||
bool ICACHE_FLASH_ATTR wifi_softap_set_dhcps_lease(struct dhcps_lease *please)
|
||
{
|
||
struct ip_info info;
|
||
uint32 softap_ip = 0;
|
||
if (please == NULL)
|
||
return false;
|
||
|
||
os_bzero(&info, sizeof(struct ip_info));
|
||
wifi_get_ip_info(SOFTAP_IF, &info);
|
||
softap_ip = htonl(info.ip.addr);
|
||
please->start_ip = htonl(please->start_ip);
|
||
please->end_ip = htonl(please->end_ip);
|
||
|
||
/*config ip information can't contain local ip*/
|
||
if ((please->start_ip <= softap_ip) && (softap_ip <= please->end_ip))
|
||
return false;
|
||
|
||
/*config ip information must be in the same segment as the local ip*/
|
||
softap_ip >>= 8;
|
||
if ((please->start_ip >> 8 != softap_ip)
|
||
|| (please->end_ip >> 8 != softap_ip)) {
|
||
return false;
|
||
}
|
||
|
||
if (please->end_ip - please->start_ip > DHCPS_MAX_LEASE)
|
||
return false;
|
||
|
||
os_bzero(&dhcps_lease, sizeof(dhcps_lease));
|
||
dhcps_lease.start_ip = please->start_ip;
|
||
dhcps_lease.end_ip = please->end_ip;
|
||
dhcps_lease_flag = false;
|
||
return true;
|
||
}
|
||
|
||
void ICACHE_FLASH_ATTR dhcps_coarse_tmr(void)
|
||
{
|
||
list_node *pback_node = NULL;
|
||
list_node *pnode = NULL;
|
||
struct dhcps_pool *pdhcps_pool = NULL;
|
||
pnode = plist;
|
||
while (pnode != NULL) {
|
||
pdhcps_pool = pnode->pnode;
|
||
pdhcps_pool->lease_timer --;
|
||
if (pdhcps_pool->lease_timer == 0){
|
||
pback_node = pnode;
|
||
pnode = pback_node->pnext;
|
||
node_remove_from_list(&plist,pback_node);
|
||
os_free(pback_node->pnode);
|
||
pback_node->pnode = NULL;
|
||
os_free(pback_node);
|
||
pback_node = NULL;
|
||
} else {
|
||
pnode = pnode ->pnext;
|
||
}
|
||
}
|
||
}
|