给我一段arp捕获的C语言代码

以下是一段基于WinPcap的ARP捕获的C语言代码：

#include <pcap.h>
#include <stdio.h>
#include <stdlib.h>
#include <arpa/inet.h>
#include <netinet/if_ether.h>
#include <netinet/in.h>

void arp_callback(u_char *args, const struct pcap_pkthdr *header, const u_char *packet) {
    struct ether_header *eth_header = (struct ether_header *) packet;
    if (ntohs(eth_header->ether_type) == ETHERTYPE_ARP) {
        printf("ARP packet captured:\n");
        printf("Source MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", eth_header->ether_shost[0], eth_header->ether_shost[1], eth_header->ether_shost[2], eth_header->ether_shost[3], eth_header->ether_shost[4], eth_header->ether_shost[5]);
        printf("Destination MAC: %02x:%02x:%02x:%02x:%02x:%02x\n", eth_header->ether_dhost[0], eth_header->ether_dhost[1], eth_header->ether_dhost[2], eth_header->ether_dhost[3], eth_header->ether_dhost[4], eth_header->ether_dhost[5]);

        struct arphdr *arp_header = (struct arphdr *)(packet + sizeof(struct ether_header));
        printf("Source IP: %s\n", inet_ntoa(*(struct in_addr *)arp_header->arp_spa));
        printf("Destination IP: %s\n", inet_ntoa(*(struct in_addr *)arp_header->arp_tpa));
    }
}

int main(int argc, char *argv[]) {
    char errbuf[PCAP_ERRBUF_SIZE];
    pcap_t *handle = pcap_open_live("eth0", BUFSIZ, 1, 1000, errbuf);
    if (handle == NULL) {
        fprintf(stderr, "Could not open device %s: %s\n", "eth0", errbuf);
        exit(EXIT_FAILURE);
    }

    if (pcap_datalink(handle) != DLT_EN10MB) {
        fprintf(stderr, "Device %s doesn't provide Ethernet headers - not supported\n", "eth0");
        exit(EXIT_FAILURE);
    }

    struct bpf_program fp;
    char filter_exp[] = "arp";
    bpf_u_int32 net;
    if (pcap_compile(handle, &fp, filter_exp, 0, net) == -1) {
        fprintf(stderr, "Couldn't parse filter %s: %s\n", filter_exp, pcap_geterr(handle));
        exit(EXIT_FAILURE);
    }
    if (pcap_setfilter(handle, &fp) == -1) {
        fprintf(stderr, "Couldn't install filter %s: %s\n", filter_exp, pcap_geterr(handle));
        exit(EXIT_FAILURE);
    }

    pcap_loop(handle, -1, arp_callback, NULL);

    pcap_close(handle);
    return 0;
}

这段代码首先打开了网络接口设备 eth0，并设置了过滤器只捕获 ARP 协议的数据包。然后通过 pcap_loop 函数循环捕获数据包，并通过 arp_callback 函数对捕获的 ARP 数据包进行处理。在 arp_callback 函数中，首先解析出数据包中的以太网头部和 ARP 头部，然后打印出源 MAC 地址、目的 MAC 地址、源 IP 地址和目的 IP 地址。