Exemplos de zmap_ip_checksum em C++ (Cpp)

Exemplo n.º 1

Arquivo: module_dns.c Projeto: Fale/zmap

int dns_make_packet(void *buf, ipaddr_n_t src_ip, ipaddr_n_t dst_ip,
		uint32_t *validation, int probe_num, UNUSED void *arg) 
{
	struct ether_header *eth_header = (struct ether_header *) buf;
	struct ip *ip_header = (struct ip*) (&eth_header[1]);
	struct udphdr *udp_header= (struct udphdr *) &ip_header[1];

	ip_header->ip_src.s_addr = src_ip;
	ip_header->ip_dst.s_addr = dst_ip;
	udp_header->uh_sport = htons(get_src_port(num_ports, probe_num,
					 validation));
	
	dns_header* dns_header_p = (dns_header*) &udp_header[1];
	dns_header_p->id = validation[2] & 0xFFFF;
	
	ip_header->ip_sum = 0;
	ip_header->ip_sum = zmap_ip_checksum((unsigned short *) ip_header);

	return EXIT_SUCCESS;
}

Exemplo n.º 2

Arquivo: module_tcp_synscan.c Projeto: prelongs/zmapscan

int synscan_make_packet(void *buf, ipaddr_n_t src_ip, ipaddr_n_t dst_ip,
		uint32_t *validation, int probe_num)
{
	struct ether_header *eth_header = (struct ether_header *)buf;
	struct ip *ip_header = (struct ip*)(&eth_header[1]);
	struct tcphdr *tcp_header = (struct tcphdr*)(&ip_header[1]);
	uint32_t tcp_seq = validation[0];

	ip_header->ip_src.s_addr = src_ip;
	ip_header->ip_dst.s_addr = dst_ip;

	tcp_header->th_sport = htons(get_src_port(num_ports,
				probe_num, validation));
	tcp_header->th_seq = tcp_seq;
	tcp_header->th_sum = 0;
	tcp_header->th_sum = tcp_checksum(sizeof(struct tcphdr),
			ip_header->ip_src.s_addr, ip_header->ip_dst.s_addr, tcp_header);

	ip_header->ip_sum = 0;
	ip_header->ip_sum = zmap_ip_checksum((unsigned short *) ip_header);

	return EXIT_SUCCESS;
}