62 lines
1.9 KiB
C
62 lines
1.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* scanners.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: jhalford <jack@crans.org> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2017/10/09 15:28:42 by jhalford #+# #+# */
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/* Updated: 2017/10/24 21:48:11 by jhalford ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "nmap.h"
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coroutine void nmap_scan_tcp(chan results, t_job job)
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{
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t_result result;
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ipaddr src;
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int sock;
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sock = socket(ipfamily(job.dest), SOCK_STREAM, IPPROTO_TCP);
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src = iplocal_randport(NULL, ipmode(job.dest), sock);
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pcap_t *handle = nmap_capture(job.dest, src);
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/* chan pkts; */
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/* pkts = nmap_listener(job.dest, src); */
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/* (void)pkts; */
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/* DG("after listener"); */
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result.dest = job.dest;
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ft_strcpy(result.scan, "TCP");
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struct tcphdr pkt;
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result.status = CLOSED;
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tcp_hdrinit(&pkt);
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pkt.th_dport = htons(ipport(job.dest));
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pkt.th_sport = htons(ipport(src));
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pkt.th_flags = 0;
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pkt.th_sum = cksum(&pkt, sizeof(pkt));
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tcp_print((char *)&pkt, sizeof(pkt));
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// REQ
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DG("check");
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if (sendto(sock, &pkt, sizeof(pkt), 0, (struct sockaddr*)&job.dest, sizeof(job.dest)) < 0)
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{
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DG("check 1");
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perror("sendto");
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}
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DG("check 2");
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// RESP
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struct pcap_pkthdr pkthdr;
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const u_char *resp;
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resp = pcap_next(handle, &pkthdr);
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tcp_print((char *)resp, pkthdr.len);
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chs(results, t_result, result);
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chclose(results);
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return ;
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}
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