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dhcp_protocol.h
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dhcp_protocol.h
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#ifndef DHCP_PROTOCOL_H
#define DHCP_PROTOCOL_H
#include <linux/if_ether.h>
#include <assert.h>
#include <stdio.h>
#include <time.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <linux/if_packet.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <asm/types.h>
#define ARPHRD_ETHER 1
struct dhcp_lease_info{
int activation;
int aq_ipaddr;
int ro_ipaddr;
int dh_ipaddr;
char destmac[6];
int lease;
int renew;
int rebind;
};
struct mac_address{
unsigned char hwmac[6];
};
//run dhcp protocol
int dhcp_protocol(char command[128],int hwmac_increment);
//use this function to aquire dhcp_info.
//the info returned is in network byte order.
int get_lease_info(struct dhcp_lease_info*ret);
//functions below are for internal use.
static int dhcp_protocol_init(char hwmac[6]);
static void send_fd(char *s);
int send_dhcp_packet(unsigned int xid, unsigned char*hwmac,unsigned char *dstmac, unsigned int *scrip, unsigned int *dstip,unsigned int*server_ip,unsigned int *req_ip,unsigned int type);
#endif