1323 lines
37 KiB
C
1323 lines
37 KiB
C
// Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//#include "esp_common.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include "lwip/inet.h"
|
|
#include "lwip/err.h"
|
|
#include "lwip/pbuf.h"
|
|
#include "lwip/udp.h"
|
|
#include "lwip/mem.h"
|
|
#include "lwip/ip_addr.h"
|
|
#include "tcpip_adapter.h"
|
|
|
|
#include "apps/dhcpserver.h"
|
|
#include "apps/dhcpserver_options.h"
|
|
|
|
#if ESP_DHCP
|
|
|
|
#define BOOTP_BROADCAST 0x8000
|
|
|
|
#define DHCP_REQUEST 1
|
|
#define DHCP_REPLY 2
|
|
#define DHCP_HTYPE_ETHERNET 1
|
|
#define DHCP_HLEN_ETHERNET 6
|
|
#define DHCP_MSG_LEN 236
|
|
|
|
#define DHCPS_SERVER_PORT 67
|
|
#define DHCPS_CLIENT_PORT 68
|
|
|
|
#define DHCPDISCOVER 1
|
|
#define DHCPOFFER 2
|
|
#define DHCPREQUEST 3
|
|
#define DHCPDECLINE 4
|
|
#define DHCPACK 5
|
|
#define DHCPNAK 6
|
|
#define DHCPRELEASE 7
|
|
|
|
#define DHCP_OPTION_SUBNET_MASK 1
|
|
#define DHCP_OPTION_ROUTER 3
|
|
#define DHCP_OPTION_DNS_SERVER 6
|
|
#define DHCP_OPTION_REQ_IPADDR 50
|
|
#define DHCP_OPTION_LEASE_TIME 51
|
|
#define DHCP_OPTION_MSG_TYPE 53
|
|
#define DHCP_OPTION_SERVER_ID 54
|
|
#define DHCP_OPTION_INTERFACE_MTU 26
|
|
#define DHCP_OPTION_PERFORM_ROUTER_DISCOVERY 31
|
|
#define DHCP_OPTION_BROADCAST_ADDRESS 28
|
|
#define DHCP_OPTION_REQ_LIST 55
|
|
#define DHCP_OPTION_END 255
|
|
|
|
//#define USE_CLASS_B_NET 1
|
|
#define DHCPS_DEBUG 0
|
|
#define DHCPS_LOG printf
|
|
|
|
#define MAX_STATION_NUM CONFIG_LWIP_DHCPS_MAX_STATION_NUM
|
|
|
|
#define DHCPS_STATE_OFFER 1
|
|
#define DHCPS_STATE_DECLINE 2
|
|
#define DHCPS_STATE_ACK 3
|
|
#define DHCPS_STATE_NAK 4
|
|
#define DHCPS_STATE_IDLE 5
|
|
#define DHCPS_STATE_RELEASE 6
|
|
|
|
typedef struct _list_node {
|
|
void *pnode;
|
|
struct _list_node *pnext;
|
|
} list_node;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////////
|
|
|
|
static const u32_t magic_cookie = 0x63538263;
|
|
|
|
static struct udp_pcb *pcb_dhcps = NULL;
|
|
static ip4_addr_t broadcast_dhcps;
|
|
static ip4_addr_t server_address;
|
|
static ip4_addr_t dns_server = {0};
|
|
static ip4_addr_t client_address; //added
|
|
static ip4_addr_t client_address_plus;
|
|
|
|
static list_node *plist = NULL;
|
|
static bool renew = false;
|
|
|
|
static dhcps_lease_t dhcps_poll;
|
|
static dhcps_time_t dhcps_lease_time = DHCPS_LEASE_TIME_DEF; //minute
|
|
static dhcps_offer_t dhcps_offer = 0xFF;
|
|
static dhcps_offer_t dhcps_dns = 0x00;
|
|
static dhcps_cb_t dhcps_cb;
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_option_info
|
|
* Description : get the DHCP message option info
|
|
* Parameters : op_id -- DHCP message option id
|
|
* opt_len -- DHCP message option length
|
|
* Returns : DHCP message option addr
|
|
*******************************************************************************/
|
|
void *dhcps_option_info(u8_t op_id, u32_t opt_len)
|
|
{
|
|
void *option_arg = NULL;
|
|
|
|
switch (op_id) {
|
|
case IP_ADDRESS_LEASE_TIME:
|
|
if (opt_len == sizeof(dhcps_time_t)) {
|
|
option_arg = &dhcps_lease_time;
|
|
}
|
|
|
|
break;
|
|
|
|
case REQUESTED_IP_ADDRESS:
|
|
if (opt_len == sizeof(dhcps_lease_t)) {
|
|
option_arg = &dhcps_poll;
|
|
}
|
|
|
|
break;
|
|
|
|
case ROUTER_SOLICITATION_ADDRESS:
|
|
if (opt_len == sizeof(dhcps_offer_t)) {
|
|
option_arg = &dhcps_offer;
|
|
}
|
|
|
|
break;
|
|
|
|
case DOMAIN_NAME_SERVER:
|
|
if (opt_len == sizeof(dhcps_offer_t)) {
|
|
option_arg = &dhcps_dns;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return option_arg;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_set_option_info
|
|
* Description : set the DHCP message option info
|
|
* Parameters : op_id -- DHCP message option id
|
|
* opt_info -- DHCP message option info
|
|
* opt_len -- DHCP message option length
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void dhcps_set_option_info(u8_t op_id, void *opt_info, u32_t opt_len)
|
|
{
|
|
if (opt_info == NULL) {
|
|
return;
|
|
}
|
|
switch (op_id) {
|
|
case IP_ADDRESS_LEASE_TIME:
|
|
if (opt_len == sizeof(dhcps_time_t)) {
|
|
dhcps_lease_time = *(dhcps_time_t *)opt_info;
|
|
}
|
|
|
|
break;
|
|
|
|
case REQUESTED_IP_ADDRESS:
|
|
if (opt_len == sizeof(dhcps_lease_t)) {
|
|
dhcps_poll = *(dhcps_lease_t *)opt_info;
|
|
}
|
|
|
|
break;
|
|
|
|
case ROUTER_SOLICITATION_ADDRESS:
|
|
if (opt_len == sizeof(dhcps_offer_t)) {
|
|
dhcps_offer = *(dhcps_offer_t *)opt_info;
|
|
}
|
|
|
|
break;
|
|
|
|
case DOMAIN_NAME_SERVER:
|
|
if (opt_len == sizeof(dhcps_offer_t)) {
|
|
dhcps_dns = *(dhcps_offer_t *)opt_info;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
return;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : node_insert_to_list
|
|
* Description : insert the node to the list
|
|
* Parameters : phead -- the head node of the list
|
|
* pinsert -- the insert node of the list
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void node_insert_to_list(list_node **phead, list_node *pinsert)
|
|
{
|
|
list_node *plist = NULL;
|
|
struct dhcps_pool *pdhcps_pool = NULL;
|
|
struct dhcps_pool *pdhcps_node = NULL;
|
|
|
|
if (*phead == NULL) {
|
|
*phead = pinsert;
|
|
} else {
|
|
plist = *phead;
|
|
pdhcps_node = pinsert->pnode;
|
|
pdhcps_pool = plist->pnode;
|
|
|
|
if (pdhcps_node->ip.addr < pdhcps_pool->ip.addr) {
|
|
pinsert->pnext = plist;
|
|
*phead = pinsert;
|
|
} else {
|
|
while (plist->pnext != NULL) {
|
|
pdhcps_pool = plist->pnext->pnode;
|
|
|
|
if (pdhcps_node->ip.addr < pdhcps_pool->ip.addr) {
|
|
pinsert->pnext = plist->pnext;
|
|
plist->pnext = pinsert;
|
|
break;
|
|
}
|
|
|
|
plist = plist->pnext;
|
|
}
|
|
|
|
if (plist->pnext == NULL) {
|
|
plist->pnext = pinsert;
|
|
}
|
|
}
|
|
}
|
|
|
|
// pinsert->pnext = NULL;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : node_delete_from_list
|
|
* Description : remove the node from list
|
|
* Parameters : phead -- the head node of the list
|
|
* pdelete -- the remove node of the list
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void node_remove_from_list(list_node **phead, list_node *pdelete)
|
|
{
|
|
list_node *plist = NULL;
|
|
|
|
plist = *phead;
|
|
|
|
if (plist == NULL) {
|
|
*phead = NULL;
|
|
} else {
|
|
if (plist == pdelete) {
|
|
*phead = plist->pnext;
|
|
pdelete->pnext = NULL;
|
|
} else {
|
|
while (plist != NULL) {
|
|
if (plist->pnext == pdelete) {
|
|
plist->pnext = pdelete->pnext;
|
|
pdelete->pnext = NULL;
|
|
}
|
|
|
|
plist = plist->pnext;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : add_msg_type
|
|
* Description : add TYPE option of DHCP message
|
|
* Parameters : optptr -- the addr of DHCP message option
|
|
* Returns : the addr of DHCP message option
|
|
*******************************************************************************/
|
|
static u8_t *add_msg_type(u8_t *optptr, u8_t type)
|
|
{
|
|
*optptr++ = DHCP_OPTION_MSG_TYPE;
|
|
*optptr++ = 1;
|
|
*optptr++ = type;
|
|
return optptr;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : add_offer_options
|
|
* Description : add OFFER option of DHCP message
|
|
* Parameters : optptr -- the addr of DHCP message option
|
|
* Returns : the addr of DHCP message option
|
|
*******************************************************************************/
|
|
static u8_t *add_offer_options(u8_t *optptr)
|
|
{
|
|
ip4_addr_t ipadd;
|
|
|
|
ipadd.addr = *((u32_t *) &server_address);
|
|
|
|
#ifdef USE_CLASS_B_NET
|
|
*optptr++ = DHCP_OPTION_SUBNET_MASK;
|
|
*optptr++ = 4; //length
|
|
*optptr++ = 255;
|
|
*optptr++ = 240;
|
|
*optptr++ = 0;
|
|
*optptr++ = 0;
|
|
#else
|
|
*optptr++ = DHCP_OPTION_SUBNET_MASK;
|
|
*optptr++ = 4;
|
|
*optptr++ = 255;
|
|
*optptr++ = 255;
|
|
*optptr++ = 255;
|
|
*optptr++ = 0;
|
|
#endif
|
|
|
|
*optptr++ = DHCP_OPTION_LEASE_TIME;
|
|
*optptr++ = 4;
|
|
*optptr++ = ((dhcps_lease_time * DHCPS_LEASE_UNIT) >> 24) & 0xFF;
|
|
*optptr++ = ((dhcps_lease_time * DHCPS_LEASE_UNIT) >> 16) & 0xFF;
|
|
*optptr++ = ((dhcps_lease_time * DHCPS_LEASE_UNIT) >> 8) & 0xFF;
|
|
*optptr++ = ((dhcps_lease_time * DHCPS_LEASE_UNIT) >> 0) & 0xFF;
|
|
|
|
*optptr++ = DHCP_OPTION_SERVER_ID;
|
|
*optptr++ = 4;
|
|
*optptr++ = ip4_addr1(&ipadd);
|
|
*optptr++ = ip4_addr2(&ipadd);
|
|
*optptr++ = ip4_addr3(&ipadd);
|
|
*optptr++ = ip4_addr4(&ipadd);
|
|
|
|
if (dhcps_router_enabled(dhcps_offer)) {
|
|
tcpip_adapter_ip_info_t if_ip;
|
|
//bzero(&if_ip, sizeof(struct ip_info));
|
|
memset(&if_ip , 0x00, sizeof(tcpip_adapter_ip_info_t));
|
|
|
|
tcpip_adapter_get_ip_info(ESP_IF_WIFI_AP, &if_ip);
|
|
|
|
if (!ip4_addr_isany_val(if_ip.gw)) {
|
|
*optptr++ = DHCP_OPTION_ROUTER;
|
|
*optptr++ = 4;
|
|
*optptr++ = ip4_addr1(&if_ip.gw);
|
|
*optptr++ = ip4_addr2(&if_ip.gw);
|
|
*optptr++ = ip4_addr3(&if_ip.gw);
|
|
*optptr++ = ip4_addr4(&if_ip.gw);
|
|
}
|
|
}
|
|
|
|
*optptr++ = DHCP_OPTION_DNS_SERVER;
|
|
*optptr++ = 4;
|
|
if (dhcps_dns_enabled(dhcps_dns)) {
|
|
*optptr++ = ip4_addr1(&dns_server);
|
|
*optptr++ = ip4_addr2(&dns_server);
|
|
*optptr++ = ip4_addr3(&dns_server);
|
|
*optptr++ = ip4_addr4(&dns_server);
|
|
}else {
|
|
*optptr++ = ip4_addr1(&ipadd);
|
|
*optptr++ = ip4_addr2(&ipadd);
|
|
*optptr++ = ip4_addr3(&ipadd);
|
|
*optptr++ = ip4_addr4(&ipadd);
|
|
}
|
|
|
|
#ifdef CLASS_B_NET
|
|
*optptr++ = DHCP_OPTION_BROADCAST_ADDRESS;
|
|
*optptr++ = 4;
|
|
*optptr++ = ip4_addr1(&ipadd);
|
|
*optptr++ = 255;
|
|
*optptr++ = 255;
|
|
*optptr++ = 255;
|
|
#else
|
|
*optptr++ = DHCP_OPTION_BROADCAST_ADDRESS;
|
|
*optptr++ = 4;
|
|
*optptr++ = ip4_addr1(&ipadd);
|
|
*optptr++ = ip4_addr2(&ipadd);
|
|
*optptr++ = ip4_addr3(&ipadd);
|
|
*optptr++ = 255;
|
|
#endif
|
|
|
|
*optptr++ = DHCP_OPTION_INTERFACE_MTU;
|
|
*optptr++ = 2;
|
|
*optptr++ = 0x05;
|
|
*optptr++ = 0xdc;
|
|
|
|
*optptr++ = DHCP_OPTION_PERFORM_ROUTER_DISCOVERY;
|
|
*optptr++ = 1;
|
|
*optptr++ = 0x00;
|
|
|
|
*optptr++ = 43;
|
|
*optptr++ = 6;
|
|
|
|
*optptr++ = 0x01;
|
|
*optptr++ = 4;
|
|
*optptr++ = 0x00;
|
|
*optptr++ = 0x00;
|
|
*optptr++ = 0x00;
|
|
*optptr++ = 0x02;
|
|
|
|
return optptr;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : add_end
|
|
* Description : add end option of DHCP message
|
|
* Parameters : optptr -- the addr of DHCP message option
|
|
* Returns : the addr of DHCP message option
|
|
*******************************************************************************/
|
|
static u8_t *add_end(u8_t *optptr)
|
|
{
|
|
*optptr++ = DHCP_OPTION_END;
|
|
return optptr;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : create_msg
|
|
* Description : create response message
|
|
* Parameters : m -- DHCP message info
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void create_msg(struct dhcps_msg *m)
|
|
{
|
|
ip4_addr_t client;
|
|
|
|
|
|
client.addr = *((uint32_t *) &client_address);
|
|
|
|
m->op = DHCP_REPLY;
|
|
|
|
m->htype = DHCP_HTYPE_ETHERNET;
|
|
|
|
m->hlen = 6;
|
|
|
|
m->hops = 0;
|
|
// os_memcpy((char *) xid, (char *) m->xid, sizeof(m->xid));
|
|
m->secs = 0;
|
|
m->flags = htons(BOOTP_BROADCAST);
|
|
|
|
memcpy((char *) m->yiaddr, (char *) &client.addr, sizeof(m->yiaddr));
|
|
|
|
memset((char *) m->ciaddr, 0, sizeof(m->ciaddr));
|
|
|
|
memset((char *) m->siaddr, 0, sizeof(m->siaddr));
|
|
|
|
memset((char *) m->giaddr, 0, sizeof(m->giaddr));
|
|
|
|
memset((char *) m->sname, 0, sizeof(m->sname));
|
|
|
|
memset((char *) m->file, 0, sizeof(m->file));
|
|
|
|
memset((char *) m->options, 0, sizeof(m->options));
|
|
|
|
u32_t magic_cookie_temp = magic_cookie;
|
|
|
|
memcpy((char *) m->options, &magic_cookie_temp, sizeof(magic_cookie_temp));
|
|
}
|
|
|
|
struct pbuf * dhcps_pbuf_alloc(u16_t len)
|
|
{
|
|
u16_t mlen = sizeof(struct dhcps_msg);
|
|
|
|
if (len > mlen) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: len=%d mlen=%d", len, mlen);
|
|
#endif
|
|
mlen = len;
|
|
}
|
|
|
|
return pbuf_alloc(PBUF_TRANSPORT, mlen, PBUF_RAM);
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : send_offer
|
|
* Description : DHCP message OFFER Response
|
|
* Parameters : m -- DHCP message info
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void send_offer(struct dhcps_msg *m, u16_t len)
|
|
{
|
|
u8_t *end;
|
|
struct pbuf *p, *q;
|
|
u8_t *data;
|
|
u16_t cnt = 0;
|
|
u16_t i;
|
|
err_t SendOffer_err_t;
|
|
create_msg(m);
|
|
|
|
end = add_msg_type(&m->options[4], DHCPOFFER);
|
|
end = add_offer_options(end);
|
|
end = add_end(end);
|
|
|
|
p = dhcps_pbuf_alloc(len);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("udhcp: send_offer>>p->ref = %d\n", p->ref);
|
|
#endif
|
|
|
|
if (p != NULL) {
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_offer>>pbuf_alloc succeed\n");
|
|
DHCPS_LOG("dhcps: send_offer>>p->tot_len = %d\n", p->tot_len);
|
|
DHCPS_LOG("dhcps: send_offer>>p->len = %d\n", p->len);
|
|
#endif
|
|
q = p;
|
|
|
|
while (q != NULL) {
|
|
data = (u8_t *)q->payload;
|
|
|
|
for (i = 0; i < q->len; i++) {
|
|
data[i] = ((u8_t *) m)[cnt++];
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("%02x ", data[i]);
|
|
|
|
if ((i + 1) % 16 == 0) {
|
|
DHCPS_LOG("\n");
|
|
}
|
|
|
|
#endif
|
|
}
|
|
|
|
q = q->next;
|
|
}
|
|
} else {
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_offer>>pbuf_alloc failed\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
ip_addr_t ip_temp = IPADDR4_INIT(0x0);
|
|
ip4_addr_set(ip_2_ip4(&ip_temp), &broadcast_dhcps);
|
|
SendOffer_err_t = udp_sendto(pcb_dhcps, p, &ip_temp, DHCPS_CLIENT_PORT);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_offer>>udp_sendto result %x\n", SendOffer_err_t);
|
|
#endif
|
|
|
|
if (p->ref != 0) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("udhcp: send_offer>>free pbuf\n");
|
|
#endif
|
|
pbuf_free(p);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : send_nak
|
|
* Description : DHCP message NACK Response
|
|
* Parameters : m -- DHCP message info
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void send_nak(struct dhcps_msg *m, u16_t len)
|
|
{
|
|
u8_t *end;
|
|
struct pbuf *p, *q;
|
|
u8_t *data;
|
|
u16_t cnt = 0;
|
|
u16_t i;
|
|
err_t SendNak_err_t;
|
|
create_msg(m);
|
|
|
|
end = add_msg_type(&m->options[4], DHCPNAK);
|
|
end = add_end(end);
|
|
|
|
p = dhcps_pbuf_alloc(len);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("udhcp: send_nak>>p->ref = %d\n", p->ref);
|
|
#endif
|
|
|
|
if (p != NULL) {
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_nak>>pbuf_alloc succeed\n");
|
|
DHCPS_LOG("dhcps: send_nak>>p->tot_len = %d\n", p->tot_len);
|
|
DHCPS_LOG("dhcps: send_nak>>p->len = %d\n", p->len);
|
|
#endif
|
|
q = p;
|
|
|
|
while (q != NULL) {
|
|
data = (u8_t *)q->payload;
|
|
|
|
for (i = 0; i < q->len; i++) {
|
|
data[i] = ((u8_t *) m)[cnt++];
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("%02x ", data[i]);
|
|
|
|
if ((i + 1) % 16 == 0) {
|
|
DHCPS_LOG("\n");
|
|
}
|
|
|
|
#endif
|
|
}
|
|
|
|
q = q->next;
|
|
}
|
|
} else {
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_nak>>pbuf_alloc failed\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
ip_addr_t ip_temp = IPADDR4_INIT(0x0);
|
|
ip4_addr_set(ip_2_ip4(&ip_temp), &broadcast_dhcps);
|
|
SendNak_err_t = udp_sendto(pcb_dhcps, p, &ip_temp, DHCPS_CLIENT_PORT);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_nak>>udp_sendto result %x\n", SendNak_err_t);
|
|
#endif
|
|
|
|
if (p->ref != 0) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("udhcp: send_nak>>free pbuf\n");
|
|
#endif
|
|
pbuf_free(p);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : send_ack
|
|
* Description : DHCP message ACK Response
|
|
* Parameters : m -- DHCP message info
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void send_ack(struct dhcps_msg *m, u16_t len)
|
|
{
|
|
u8_t *end;
|
|
struct pbuf *p, *q;
|
|
u8_t *data;
|
|
u16_t cnt = 0;
|
|
u16_t i;
|
|
err_t SendAck_err_t;
|
|
create_msg(m);
|
|
|
|
end = add_msg_type(&m->options[4], DHCPACK);
|
|
end = add_offer_options(end);
|
|
end = add_end(end);
|
|
|
|
p = dhcps_pbuf_alloc(len);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("udhcp: send_ack>>p->ref = %d\n", p->ref);
|
|
#endif
|
|
|
|
if (p != NULL) {
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_ack>>pbuf_alloc succeed\n");
|
|
DHCPS_LOG("dhcps: send_ack>>p->tot_len = %d\n", p->tot_len);
|
|
DHCPS_LOG("dhcps: send_ack>>p->len = %d\n", p->len);
|
|
#endif
|
|
q = p;
|
|
|
|
while (q != NULL) {
|
|
data = (u8_t *)q->payload;
|
|
|
|
for (i = 0; i < q->len; i++) {
|
|
data[i] = ((u8_t *) m)[cnt++];
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("%02x ", data[i]);
|
|
|
|
if ((i + 1) % 16 == 0) {
|
|
DHCPS_LOG("\n");
|
|
}
|
|
|
|
#endif
|
|
}
|
|
|
|
q = q->next;
|
|
}
|
|
} else {
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_ack>>pbuf_alloc failed\n");
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
ip_addr_t ip_temp = IPADDR4_INIT(0x0);
|
|
ip4_addr_set(ip_2_ip4(&ip_temp), &broadcast_dhcps);
|
|
SendAck_err_t = udp_sendto(pcb_dhcps, p, &ip_temp, DHCPS_CLIENT_PORT);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: send_ack>>udp_sendto result %x\n", SendAck_err_t);
|
|
#endif
|
|
|
|
if (SendAck_err_t == ERR_OK) {
|
|
dhcps_cb(m->yiaddr);
|
|
}
|
|
|
|
if (p->ref != 0) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("udhcp: send_ack>>free pbuf\n");
|
|
#endif
|
|
pbuf_free(p);
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : parse_options
|
|
* Description : parse DHCP message options
|
|
* Parameters : optptr -- DHCP message option info
|
|
* len -- DHCP message option length
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static u8_t parse_options(u8_t *optptr, s16_t len)
|
|
{
|
|
ip4_addr_t client;
|
|
bool is_dhcp_parse_end = false;
|
|
struct dhcps_state s;
|
|
|
|
client.addr = *((uint32_t *) &client_address);
|
|
|
|
u8_t *end = optptr + len;
|
|
u16_t type = 0;
|
|
|
|
s.state = DHCPS_STATE_IDLE;
|
|
|
|
while (optptr < end) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: (s16_t)*optptr = %d\n", (s16_t)*optptr);
|
|
#endif
|
|
|
|
switch ((s16_t) *optptr) {
|
|
|
|
case DHCP_OPTION_MSG_TYPE: //53
|
|
type = *(optptr + 2);
|
|
break;
|
|
|
|
case DHCP_OPTION_REQ_IPADDR://50
|
|
if (memcmp((char *) &client.addr, (char *) optptr + 2, 4) == 0) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: DHCP_OPTION_REQ_IPADDR = 0 ok\n");
|
|
#endif
|
|
s.state = DHCPS_STATE_ACK;
|
|
} else {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("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
|
|
DHCPS_LOG("dhcps: DHCPD_STATE_OFFER\n");
|
|
#endif
|
|
break;
|
|
|
|
case DHCPREQUEST://3
|
|
if (!(s.state == DHCPS_STATE_ACK || s.state == DHCPS_STATE_NAK)) {
|
|
if (renew == true) {
|
|
s.state = DHCPS_STATE_ACK;
|
|
} else {
|
|
s.state = DHCPS_STATE_NAK;
|
|
}
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: DHCPD_STATE_NAK\n");
|
|
#endif
|
|
}
|
|
|
|
break;
|
|
|
|
case DHCPDECLINE://4
|
|
s.state = DHCPS_STATE_IDLE;
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: DHCPD_STATE_IDLE\n");
|
|
#endif
|
|
break;
|
|
|
|
case DHCPRELEASE://7
|
|
s.state = DHCPS_STATE_RELEASE;
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: DHCPD_STATE_IDLE\n");
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: return s.state = %d\n", s.state);
|
|
#endif
|
|
return s.state;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : parse_msg
|
|
* Description : parse DHCP message from netif
|
|
* Parameters : m -- DHCP message info
|
|
* len -- DHCP message length
|
|
* Returns : DHCP message type
|
|
*******************************************************************************/
|
|
static s16_t parse_msg(struct dhcps_msg *m, u16_t len)
|
|
{
|
|
u32_t lease_timer = (dhcps_lease_time * DHCPS_LEASE_UNIT)/DHCPS_COARSE_TIMER_SECS;
|
|
|
|
if (memcmp((char *)m->options, &magic_cookie, sizeof(magic_cookie)) == 0) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: len = %d\n", len);
|
|
#endif
|
|
ip4_addr_t addr_tmp;
|
|
|
|
struct dhcps_pool *pdhcps_pool = NULL;
|
|
list_node *pnode = NULL;
|
|
list_node *pback_node = NULL;
|
|
ip4_addr_t first_address;
|
|
bool flag = false;
|
|
|
|
first_address.addr = dhcps_poll.start_ip.addr;
|
|
client_address.addr = client_address_plus.addr;
|
|
renew = false;
|
|
|
|
if (plist != NULL) {
|
|
for (pback_node = plist; pback_node != NULL; pback_node = pback_node->pnext) {
|
|
pdhcps_pool = pback_node->pnode;
|
|
|
|
if (memcmp(pdhcps_pool->mac, m->chaddr, sizeof(pdhcps_pool->mac)) == 0) {
|
|
if (memcmp(&pdhcps_pool->ip.addr, m->ciaddr, sizeof(pdhcps_pool->ip.addr)) == 0) {
|
|
renew = true;
|
|
}
|
|
|
|
client_address.addr = pdhcps_pool->ip.addr;
|
|
pdhcps_pool->lease_timer = lease_timer;
|
|
pnode = pback_node;
|
|
goto POOL_CHECK;
|
|
} else if (pdhcps_pool->ip.addr == client_address_plus.addr) {
|
|
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;
|
|
}
|
|
|
|
if (flag == false) { // search the fisrt unused ip
|
|
if (first_address.addr < pdhcps_pool->ip.addr) {
|
|
flag = true;
|
|
} else {
|
|
addr_tmp.addr = htonl(first_address.addr);
|
|
addr_tmp.addr++;
|
|
first_address.addr = htonl(addr_tmp.addr);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
client_address.addr = dhcps_poll.start_ip.addr;
|
|
}
|
|
|
|
if (client_address_plus.addr > dhcps_poll.end_ip.addr) {
|
|
client_address.addr = first_address.addr;
|
|
}
|
|
|
|
if (client_address.addr > dhcps_poll.end_ip.addr) {
|
|
client_address_plus.addr = dhcps_poll.start_ip.addr;
|
|
pdhcps_pool = NULL;
|
|
pnode = NULL;
|
|
} else {
|
|
pdhcps_pool = (struct dhcps_pool *)mem_malloc(sizeof(struct dhcps_pool));
|
|
memset(pdhcps_pool , 0x00 , sizeof(struct dhcps_pool));
|
|
|
|
pdhcps_pool->ip.addr = client_address.addr;
|
|
memcpy(pdhcps_pool->mac, m->chaddr, sizeof(pdhcps_pool->mac));
|
|
pdhcps_pool->lease_timer = lease_timer;
|
|
pnode = (list_node *)mem_malloc(sizeof(list_node));
|
|
memset(pnode , 0x00 , sizeof(list_node));
|
|
|
|
pnode->pnode = pdhcps_pool;
|
|
pnode->pnext = NULL;
|
|
node_insert_to_list(&plist, pnode);
|
|
|
|
if (client_address.addr == dhcps_poll.end_ip.addr) {
|
|
client_address_plus.addr = dhcps_poll.start_ip.addr;
|
|
} else {
|
|
addr_tmp.addr = htonl(client_address.addr);
|
|
addr_tmp.addr++;
|
|
client_address_plus.addr = htonl(addr_tmp.addr);
|
|
}
|
|
}
|
|
|
|
POOL_CHECK:
|
|
|
|
if ((client_address.addr > dhcps_poll.end_ip.addr) || (ip4_addr_isany(&client_address))) {
|
|
if (pnode != NULL) {
|
|
node_remove_from_list(&plist, pnode);
|
|
free(pnode);
|
|
pnode = NULL;
|
|
}
|
|
|
|
if (pdhcps_pool != NULL) {
|
|
free(pdhcps_pool);
|
|
pdhcps_pool = NULL;
|
|
}
|
|
|
|
return 4;
|
|
}
|
|
|
|
s16_t ret = parse_options(&m->options[4], len);;
|
|
|
|
if (ret == DHCPS_STATE_RELEASE) {
|
|
if (pnode != NULL) {
|
|
node_remove_from_list(&plist, pnode);
|
|
free(pnode);
|
|
pnode = NULL;
|
|
}
|
|
|
|
if (pdhcps_pool != NULL) {
|
|
free(pdhcps_pool);
|
|
pdhcps_pool = NULL;
|
|
}
|
|
|
|
memset(&client_address, 0x0, sizeof(client_address));
|
|
}
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: xid changed\n");
|
|
DHCPS_LOG("dhcps: client_address.addr = %x\n", client_address.addr);
|
|
#endif
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : handle_dhcp
|
|
* Description : If an incoming DHCP message is in response to us, then trigger the state machine
|
|
* Parameters : arg -- arg user supplied argument (udp_pcb.recv_arg)
|
|
* pcb -- the udp_pcb which received data
|
|
* p -- the packet buffer that was received
|
|
* addr -- the remote IP address from which the packet was received
|
|
* port -- the remote port from which the packet was received
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void handle_dhcp(void *arg,
|
|
struct udp_pcb *pcb,
|
|
struct pbuf *p,
|
|
const ip_addr_t *addr,
|
|
u16_t port)
|
|
{
|
|
struct dhcps_msg *pmsg_dhcps = NULL;
|
|
s16_t tlen, malloc_len;
|
|
u16_t i;
|
|
u16_t dhcps_msg_cnt = 0;
|
|
u8_t *p_dhcps_msg = NULL;
|
|
u8_t *data;
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> receive a packet\n");
|
|
#endif
|
|
|
|
if (p == NULL) {
|
|
return;
|
|
}
|
|
|
|
malloc_len = sizeof(struct dhcps_msg);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp malloc_len=%d rx_len=%d", malloc_len, p->tot_len);
|
|
#endif
|
|
if (malloc_len < p->tot_len) {
|
|
malloc_len = p->tot_len;
|
|
}
|
|
|
|
pmsg_dhcps = (struct dhcps_msg *)mem_malloc(malloc_len);
|
|
if (NULL == pmsg_dhcps) {
|
|
pbuf_free(p);
|
|
return;
|
|
}
|
|
|
|
memset(pmsg_dhcps , 0x00 , malloc_len);
|
|
p_dhcps_msg = (u8_t *)pmsg_dhcps;
|
|
tlen = p->tot_len;
|
|
data = p->payload;
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> p->tot_len = %d\n", tlen);
|
|
DHCPS_LOG("dhcps: handle_dhcp-> p->len = %d\n", p->len);
|
|
#endif
|
|
|
|
for (i = 0; i < p->len; i++) {
|
|
p_dhcps_msg[dhcps_msg_cnt++] = data[i];
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("%02x ", data[i]);
|
|
|
|
if ((i + 1) % 16 == 0) {
|
|
DHCPS_LOG("\n");
|
|
}
|
|
|
|
#endif
|
|
}
|
|
|
|
if (p->next != NULL) {
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> p->next != NULL\n");
|
|
DHCPS_LOG("dhcps: handle_dhcp-> p->next->tot_len = %d\n", p->next->tot_len);
|
|
DHCPS_LOG("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
|
|
DHCPS_LOG("%02x ", data[i]);
|
|
|
|
if ((i + 1) % 16 == 0) {
|
|
DHCPS_LOG("\n");
|
|
}
|
|
|
|
#endif
|
|
}
|
|
}
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> parse_msg(p)\n");
|
|
#endif
|
|
|
|
switch (parse_msg(pmsg_dhcps, tlen - 240)) {
|
|
case DHCPS_STATE_OFFER://1
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> DHCPD_STATE_OFFER\n");
|
|
#endif
|
|
send_offer(pmsg_dhcps, malloc_len);
|
|
break;
|
|
|
|
case DHCPS_STATE_ACK://3
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> DHCPD_STATE_ACK\n");
|
|
#endif
|
|
send_ack(pmsg_dhcps, malloc_len);
|
|
break;
|
|
|
|
case DHCPS_STATE_NAK://4
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> DHCPD_STATE_NAK\n");
|
|
#endif
|
|
send_nak(pmsg_dhcps, malloc_len);
|
|
break;
|
|
|
|
default :
|
|
break;
|
|
}
|
|
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps: handle_dhcp-> pbuf_free(p)\n");
|
|
#endif
|
|
pbuf_free(p);
|
|
free(pmsg_dhcps);
|
|
pmsg_dhcps = NULL;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_poll_set
|
|
* Description : set ip poll from start to end for station
|
|
* Parameters : ip -- The current ip addr
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void dhcps_poll_set(u32_t ip)
|
|
{
|
|
u32_t softap_ip = 0, local_ip = 0;
|
|
u32_t start_ip = 0;
|
|
u32_t end_ip = 0;
|
|
|
|
if (dhcps_poll.enable == true) {
|
|
softap_ip = htonl(ip);
|
|
start_ip = htonl(dhcps_poll.start_ip.addr);
|
|
end_ip = htonl(dhcps_poll.end_ip.addr);
|
|
|
|
/*config ip information can't contain local ip*/
|
|
if ((start_ip <= softap_ip) && (softap_ip <= end_ip)) {
|
|
dhcps_poll.enable = false;
|
|
} else {
|
|
/*config ip information must be in the same segment as the local ip*/
|
|
softap_ip >>= 8;
|
|
|
|
if (((start_ip >> 8 != softap_ip) || (end_ip >> 8 != softap_ip))
|
|
|| (end_ip - start_ip > DHCPS_MAX_LEASE)) {
|
|
dhcps_poll.enable = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (dhcps_poll.enable == false) {
|
|
local_ip = softap_ip = htonl(ip);
|
|
softap_ip &= 0xFFFFFF00;
|
|
local_ip &= 0xFF;
|
|
|
|
if (local_ip >= 0x80) {
|
|
local_ip -= DHCPS_MAX_LEASE;
|
|
} else {
|
|
local_ip ++;
|
|
}
|
|
|
|
bzero(&dhcps_poll, sizeof(dhcps_poll));
|
|
dhcps_poll.start_ip.addr = softap_ip | local_ip;
|
|
dhcps_poll.end_ip.addr = softap_ip | (local_ip + DHCPS_MAX_LEASE - 1);
|
|
dhcps_poll.start_ip.addr = htonl(dhcps_poll.start_ip.addr);
|
|
dhcps_poll.end_ip.addr = htonl(dhcps_poll.end_ip.addr);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_set_new_lease_cb
|
|
* Description : set callback for dhcp server when it assign an IP
|
|
* to the connected dhcp client
|
|
* Parameters : cb -- callback for dhcp server
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void dhcps_set_new_lease_cb(dhcps_cb_t cb)
|
|
{
|
|
dhcps_cb = cb;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_start
|
|
* Description : start dhcp server function
|
|
* Parameters : netif -- The current netif addr
|
|
* : info -- The current ip info
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void dhcps_start(struct netif *netif, ip4_addr_t ip)
|
|
{
|
|
struct netif *apnetif = netif;
|
|
|
|
if (apnetif->dhcps_pcb != NULL) {
|
|
udp_remove(apnetif->dhcps_pcb);
|
|
}
|
|
|
|
pcb_dhcps = udp_new();
|
|
|
|
if (pcb_dhcps == NULL || ip4_addr_isany_val(ip)) {
|
|
printf("dhcps_start(): could not obtain pcb\n");
|
|
}
|
|
|
|
apnetif->dhcps_pcb = pcb_dhcps;
|
|
|
|
IP4_ADDR(&broadcast_dhcps, 255, 255, 255, 255);
|
|
|
|
server_address.addr = ip.addr;
|
|
dhcps_poll_set(server_address.addr);
|
|
|
|
client_address_plus.addr = dhcps_poll.start_ip.addr;
|
|
|
|
udp_bind(pcb_dhcps, &netif->ip_addr, DHCPS_SERVER_PORT);
|
|
udp_recv(pcb_dhcps, handle_dhcp, NULL);
|
|
#if DHCPS_DEBUG
|
|
DHCPS_LOG("dhcps:dhcps_start->udp_recv function Set a receive callback handle_dhcp for UDP_PCB pcb_dhcps\n");
|
|
#endif
|
|
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_stop
|
|
* Description : stop dhcp server function
|
|
* Parameters : netif -- The current netif addr
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void dhcps_stop(struct netif *netif)
|
|
{
|
|
struct netif *apnetif = netif;
|
|
|
|
if (apnetif == NULL) {
|
|
printf("dhcps_stop: apnetif == NULL\n");
|
|
return;
|
|
}
|
|
|
|
if (apnetif->dhcps_pcb != NULL) {
|
|
udp_disconnect(apnetif->dhcps_pcb);
|
|
udp_remove(apnetif->dhcps_pcb);
|
|
apnetif->dhcps_pcb = NULL;
|
|
}
|
|
|
|
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);
|
|
free(pback_node->pnode);
|
|
pback_node->pnode = NULL;
|
|
free(pback_node);
|
|
pback_node = NULL;
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : kill_oldest_dhcps_pool
|
|
* Description : remove the oldest node from list
|
|
* Parameters : none
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
static void kill_oldest_dhcps_pool(void)
|
|
{
|
|
list_node *pre = NULL, *p = NULL;
|
|
list_node *minpre = NULL, *minp = NULL;
|
|
struct dhcps_pool *pdhcps_pool = NULL, *pmin_pool = NULL;
|
|
pre = plist;
|
|
p = pre->pnext;
|
|
minpre = pre;
|
|
minp = p;
|
|
|
|
while (p != NULL) {
|
|
pdhcps_pool = p->pnode;
|
|
pmin_pool = minp->pnode;
|
|
|
|
if (pdhcps_pool->lease_timer < pmin_pool->lease_timer) {
|
|
minp = p;
|
|
minpre = pre;
|
|
}
|
|
|
|
pre = p;
|
|
p = p->pnext;
|
|
}
|
|
|
|
minpre->pnext = minp->pnext;
|
|
free(minp->pnode);
|
|
minp->pnode = NULL;
|
|
free(minp);
|
|
minp = NULL;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_coarse_tmr
|
|
* Description : the lease time count
|
|
* Parameters : none
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void dhcps_coarse_tmr(void)
|
|
{
|
|
u8_t num_dhcps_pool = 0;
|
|
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);
|
|
free(pback_node->pnode);
|
|
pback_node->pnode = NULL;
|
|
free(pback_node);
|
|
pback_node = NULL;
|
|
} else {
|
|
pnode = pnode ->pnext;
|
|
num_dhcps_pool ++;
|
|
}
|
|
}
|
|
|
|
if (num_dhcps_pool > MAX_STATION_NUM) {
|
|
kill_oldest_dhcps_pool();
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcp_search_ip_on_mac
|
|
* Description : Search ip address based on mac address
|
|
* Parameters : mac -- The MAC addr
|
|
* ip -- The IP info
|
|
* Returns : true or false
|
|
*******************************************************************************/
|
|
bool dhcp_search_ip_on_mac(u8_t *mac, ip4_addr_t *ip)
|
|
{
|
|
struct dhcps_pool *pdhcps_pool = NULL;
|
|
list_node *pback_node = NULL;
|
|
bool ret = false;
|
|
|
|
for (pback_node = plist; pback_node != NULL; pback_node = pback_node->pnext) {
|
|
pdhcps_pool = pback_node->pnode;
|
|
|
|
if (memcmp(pdhcps_pool->mac, mac, sizeof(pdhcps_pool->mac)) == 0) {
|
|
memcpy(&ip->addr, &pdhcps_pool->ip.addr, sizeof(pdhcps_pool->ip.addr));
|
|
ret = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_dns_setserver
|
|
* Description : set DNS server address for dhcpserver
|
|
* Parameters : dnsserver -- The DNS server address
|
|
* Returns : none
|
|
*******************************************************************************/
|
|
void
|
|
dhcps_dns_setserver(const ip_addr_t *dnsserver)
|
|
{
|
|
if (dnsserver != NULL) {
|
|
dns_server = *(ip_2_ip4(dnsserver));
|
|
} else {
|
|
dns_server = *(ip_2_ip4(IP_ADDR_ANY));
|
|
}
|
|
}
|
|
|
|
/******************************************************************************
|
|
* FunctionName : dhcps_dns_getserver
|
|
* Description : get DNS server address for dhcpserver
|
|
* Parameters : none
|
|
* Returns : ip4_addr_t
|
|
*******************************************************************************/
|
|
ip4_addr_t
|
|
dhcps_dns_getserver()
|
|
{
|
|
return dns_server;
|
|
}
|
|
#endif
|
|
|