ongrep

commit ad89f91bb6120d632070307f3df92d20c31f95d9
parent 70b661e1207fff703ef621b8d2822f3ddacc4cb5
Author: Stephen Gregoratto <dev@sgregoratto.me>
Date:   Sun, 14 Jun 2020 17:21:18 +1000

Remove unused tcpkill functions

Diffstat:
D
tcpkill.c
 | 
87
-------------------------------------------------------------------------------
D
tcpkill.h
 | 
7
-------

2 files changed, 0 insertions(+), 94 deletions(-)
diff --git a/tcpkill.c b/tcpkill.c
@@ -1,87 +0,0 @@
-/*
- * tcpkill.c
- *
- * Kill TCP connections already in progress.
- *
- * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
- *
- * $Id: tcpkill.c,v 1.17 2001/03/17 08:10:43 dugsong Exp $
- */
-
-#include <sys/types.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <libnet.h>
-#include <pcap.h>
-
-#include "tcpkill.h"
-
-libnet_t *l;
-
-void
-tcpkill_kill(const struct pcap_pkthdr *pcap, const u_char *pkt,
-       uint32_t pcap_off, uint32_t kill_count)
-{
-  struct libnet_ipv4_hdr *ip;
-  struct libnet_tcp_hdr *tcp;
-  u_char ctext[64];
-  uint32_t seq, win, i, len;
-
-  pkt += pcap_off;
-  len = pcap->caplen - pcap_off;
-
-  ip = (struct libnet_ipv4_hdr *)pkt;
-  if (ip->ip_p != IPPROTO_TCP)
-      return;
-
-  tcp = (struct libnet_tcp_hdr *)(pkt + (ip->ip_hl << 2));
-  if (tcp->th_flags & (TH_SYN|TH_FIN|TH_RST))
-      return;
-
-  seq = ntohl(tcp->th_ack);
-  win = ntohs(tcp->th_win);
-
-  snprintf(ctext, sizeof(ctext), "%s:%d > %s:%d:",
-       libnet_addr2name4(ip->ip_src.s_addr, LIBNET_DONT_RESOLVE),
-       ntohs(tcp->th_sport),
-       libnet_addr2name4(ip->ip_dst.s_addr, LIBNET_DONT_RESOLVE),
-       ntohs(tcp->th_dport));
-
-  for (i = 0; i < kill_count; i++) {
-      seq += (i * win);
-
-      libnet_clear_packet(l);
-
-      libnet_build_tcp(ntohs(tcp->th_dport), ntohs(tcp->th_sport),
-               seq, 0, TH_RST, 0, 0, 0, LIBNET_TCP_H,
-               NULL, 0, l, 0);
-
-      libnet_build_ipv4(LIBNET_IPV4_H + LIBNET_TCP_H, 0,
-                libnet_get_prand(LIBNET_PRu16), 0, 64,
-                IPPROTO_TCP, 0, ip->ip_dst.s_addr,
-                ip->ip_src.s_addr, NULL, 0, l, 0);
-
-      if (libnet_write(l) < 0)
-          warn("write");
-
-      fprintf(stderr, "%s R %lu:%lu(0) win 0\n", ctext, seq, seq);
-  }
-}
-
-void
-tcpkill_init(void)
-{
-  char *intf, ebuf[PCAP_ERRBUF_SIZE];
-  char libnet_ebuf[LIBNET_ERRBUF_SIZE];
-
-  if ((intf = pcap_lookupdev(ebuf)) == NULL)
-      errx(1, "%s", ebuf);
-
-  if ((l = libnet_init(LIBNET_RAW4, intf, libnet_ebuf)) == NULL)
-      errx(1, "couldn't initialize sending");
-
-  libnet_seed_prand(l);
-}
diff --git a/tcpkill.h b/tcpkill.h
@@ -1,7 +0,0 @@
-#ifndef TCPKILL_H
-#define TCPKILL_H
-
-void tcpkill_init(void);
-void tcpkill_kill(const struct pcap_pkthdr *pcap, const u_char *pkt, uint32_t pcap_off, uint32_t kill_count);
-
-#endif