64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/* arp/arp.h */
|
|
|
|
#ifndef ARP_H_
|
|
#define ARP_H_
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
|
|
#include <arpa/inet.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#include <net/if.h>
|
|
#include <net/ethernet.h>
|
|
|
|
#include <netpacket/packet.h>
|
|
#include <netinet/ether.h>
|
|
|
|
|
|
#define DEBUG
|
|
|
|
|
|
|
|
/* Sends an ARP request
|
|
|
|
sockfd is the file descriptor of the socket to use to send the
|
|
frame, should be a raw socket (AF_PACKET), which accepts ARP
|
|
(ETH_P_ALL or ETH_P_ARP)
|
|
ifindex is the index of the network interface
|
|
ipaddr is the source IP address
|
|
macaddr is the source MAC address
|
|
target_ip is the IP address to be queried via ARP
|
|
|
|
The function returns 0 upon success, EXIT_FAILURE otherwise.
|
|
*/
|
|
int send_arp_request(int sockfd, int ifindex, struct sockaddr_in *ipaddr, unsigned char *macaddr, struct in_addr target_ip);
|
|
|
|
|
|
/* Sends an ARP reply
|
|
|
|
sockfd: file descriptor of the socket
|
|
ifindex: index of the network interface
|
|
sender_ip: source IP address
|
|
sender_mac: source MAC address
|
|
target_ip: IP address to which the answer is destined
|
|
target_mac: MAC address of the target
|
|
|
|
The function returns 0 on success, or exits with EXIT_FAILURE.
|
|
*/
|
|
int send_arp_reply(int sockfd, int ifindex, struct sockaddr_in *sender_ip, unsigned char *sender_mac, struct in_addr target_ip, unsigned char *target_mac);
|
|
|
|
|
|
/* Listens to an ARP frame
|
|
|
|
sockfd: the socket file descriptor
|
|
result: the parsed ARP frame
|
|
|
|
Returns 0 if an ARP answer was found, -1 otherwise.
|
|
*/
|
|
int listen_arp_frame(int sockfd, struct ether_arp *result);
|
|
|
|
|
|
#endif /* ARP_H_ */
|