initial import

chartbeat · Sep 27, 2012 · aaac8e8 · aaac8e8
commit aaac8e8
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diff --git a/config.h b/config.h
@@ -0,0 +1,111 @@
+/* config.h.  Generated automatically by configure.  */
+/* config.h.in.  Generated automatically from configure.in by autoheader.  */
+
+/* Define to empty if the keyword does not work.  */
+/* #undef const */
+
+/* Define if you have the strftime function.  */
+#define HAVE_STRFTIME 1
+
+/* Define as the return type of signal handlers (int or void).  */
+#define RETSIGTYPE void
+
+/* Define to `unsigned' if <sys/types.h> doesn't define.  */
+/* #undef size_t */
+
+/* Define if you have the ANSI C header files.  */
+#define STDC_HEADERS 1
+
+/* Define if your <sys/time.h> declares struct tm.  */
+/* #undef TM_IN_SYS_TIME */
+
+/* Define if the X Window System is missing or not being used.  */
+#define X_DISPLAY_MISSING 1
+
+/* Define to 'uint32_t' if <sys/types.h> doesn't define. */
+/* #undef u_int32_t */
+
+/* Define to 'uint64_t' if <sys/types.h> doesn't define. */
+/* #undef u_int64_t */
+
+/* Define to 'u_int32_t' if <sys/types.h> doesn't define. */
+#define in_addr_t u_int32_t
+
+/* Define if you have the <db.h> header file.  */
+/* #undef HAVE_DB_H */
+
+/* Define if you have the <db_185.h> header file.  */
+#define HAVE_DB_185_H 1
+
+/* Should be in <sys/param.h>, *sigh* */
+#define HAVE_MINMAX 1
+#ifndef HAVE_MINMAX
+#define MIN(a,b) (((a)<(b))?(a):(b))
+#define MAX(a,b) (((a)>(b))?(a):(b))
+#endif
+
+/* Define if you have the MD5Update function.  */
+/* #undef HAVE_MD5UPDATE */
+
+/* Define if you have the dirname function.  */
+#define HAVE_DIRNAME 1
+
+/* Define if you have the ether_ntoa function.  */
+#define HAVE_ETHER_NTOA 1
+
+/* Define if you have the gethostname function.  */
+#define HAVE_GETHOSTNAME 1
+
+/* Define if you have the socket function.  */
+#define HAVE_SOCKET 1
+
+/* Define if you have the strdup function.  */
+#define HAVE_STRDUP 1
+
+/* Define if you have the strlcat function.  */
+/* #undef HAVE_STRLCAT */
+
+/* Define if you have the strlcpy function.  */
+/* #undef HAVE_STRLCPY */
+
+/* Define if you have the strsep function.  */
+#define HAVE_STRSEP 1
+
+/* Define if you have the strstr function.  */
+#define HAVE_STRSTR 1
+
+/* Define if you have the warnx function.  */
+#define HAVE_WARNX 1
+
+/* Define if you have the <err.h> header file.  */
+#define HAVE_ERR_H 1
+
+/* Define if you have the <fcntl.h> header file.  */
+#define HAVE_FCNTL_H 1
+
+/* Define if you have the <libgen.h> header file.  */
+#define HAVE_LIBGEN_H 1
+
+/* Define if you have the <net/if_tun.h> header file.  */
+/* #undef HAVE_NET_IF_TUN_H */
+
+/* Define if you have the <sys/ioctl.h> header file.  */
+#define HAVE_SYS_IOCTL_H 1
+
+/* Define if you have the <sys/queue.h> header file.  */
+#define HAVE_SYS_QUEUE_H 1
+
+/* Define if you have the <unistd.h> header file.  */
+#define HAVE_UNISTD_H 1
+
+/* Define if you have the nsl library (-lnsl).  */
+#define HAVE_LIBNSL 1
+
+/* Define if you have the resolv library (-lresolv).  */
+/* #undef HAVE_LIBRESOLV */
+
+/* Define if you have the rpcsvc library (-lrpcsvc).  */
+#define HAVE_LIBRPCSVC 1
+
+/* Define if you have the socket library (-lsocket).  */
+/* #undef HAVE_LIBSOCKET */
diff --git a/patch-tcpkill.c.diff b/patch-tcpkill.c.diff
@@ -0,0 +1,105 @@
+--- tcpkill.c.orig	2009-09-08 23:51:15.000000000 +0200
++++ tcpkill.c	2009-09-09 00:02:18.000000000 +0200
+@@ -39,17 +39,18 @@
+ static void
+ tcp_kill_cb(u_char *user, const struct pcap_pkthdr *pcap, const u_char *pkt)
+ {
+-	struct libnet_ip_hdr *ip;
++	struct libnet_ipv4_hdr *ip;
+ 	struct libnet_tcp_hdr *tcp;
+-	u_char ctext[64], buf[IP_H + TCP_H];
++	u_char ctext[64];
+ 	u_int32_t seq, win;
+-	int i, *sock, len;
++	int i, len;
++	libnet_t *l;
+
+-	sock = (int *)user;
++	l = (libnet_t *)user;
+ 	pkt += pcap_off;
+ 	len = pcap->caplen - pcap_off;
+
+-	ip = (struct libnet_ip_hdr *)pkt;
++	ip = (struct libnet_ipv4_hdr *)pkt;
+ 	if (ip->ip_p != IPPROTO_TCP)
+ 		return;
+
+@@ -57,34 +58,31 @@
+ 	if (tcp->th_flags & (TH_SYN|TH_FIN|TH_RST))
+ 		return;
+
+-	libnet_build_ip(TCP_H, 0, 0, 0, 64, IPPROTO_TCP,
+-			ip->ip_dst.s_addr, ip->ip_src.s_addr,
+-			NULL, 0, buf);
+-
+-	libnet_build_tcp(ntohs(tcp->th_dport), ntohs(tcp->th_sport),
+-			 0, 0, TH_RST, 0, 0, NULL, 0, buf + IP_H);
+-	
+ 	seq = ntohl(tcp->th_ack);
+ 	win = ntohs(tcp->th_win);
+
+ 	snprintf(ctext, sizeof(ctext), "%s:%d > %s:%d:",
+-		 libnet_host_lookup(ip->ip_src.s_addr, 0),
++		 libnet_addr2name4(ip->ip_src.s_addr, LIBNET_DONT_RESOLVE),
+ 		 ntohs(tcp->th_sport),
+-		 libnet_host_lookup(ip->ip_dst.s_addr, 0),
++		 libnet_addr2name4(ip->ip_dst.s_addr, LIBNET_DONT_RESOLVE),
+ 		 ntohs(tcp->th_dport));
+
+-	ip = (struct libnet_ip_hdr *)buf;
+-	tcp = (struct libnet_tcp_hdr *)(ip + 1);
+-	
+ 	for (i = 0; i < Opt_severity; i++) {
+-		ip->ip_id = libnet_get_prand(PRu16);
+ 		seq += (i * win);
+-		tcp->th_seq = htonl(seq);
+
+-		libnet_do_checksum(buf, IPPROTO_TCP, TCP_H);
++		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_ip(*sock, buf, sizeof(buf)) < 0)
+-			warn("write_ip");
++		if (libnet_write(l) < 0)
++			warn("write");
+
+ 		fprintf(stderr, "%s R %lu:%lu(0) win 0\n", ctext, seq, seq);
+ 	}
+@@ -95,8 +93,10 @@
+ {
+ 	extern char *optarg;
+ 	extern int optind;
+-	int c, sock;
++	int c;
+ 	char *p, *intf, *filter, ebuf[PCAP_ERRBUF_SIZE];
++	char libnet_ebuf[LIBNET_ERRBUF_SIZE];
++	libnet_t *l;
+ 	pcap_t *pd;
+
+ 	intf = NULL;
+@@ -136,14 +136,14 @@
+ 	if ((pcap_off = pcap_dloff(pd)) < 0)
+ 		errx(1, "couldn't determine link layer offset");
+
+-	if ((sock = libnet_open_raw_sock(IPPROTO_RAW)) == -1)
++	if ((l = libnet_init(LIBNET_RAW4, intf, libnet_ebuf)) == NULL)
+ 		errx(1, "couldn't initialize sending");
+
+-	libnet_seed_prand();
++	libnet_seed_prand(l);
+
+ 	warnx("listening on %s [%s]", intf, filter);
+
+-	pcap_loop(pd, -1, tcp_kill_cb, (u_char *)&sock);
++	pcap_loop(pd, -1, tcp_kill_cb, (u_char *)l);
+
+ 	/* NOTREACHED */
+
diff --git a/pcaputil.c b/pcaputil.c
@@ -0,0 +1,127 @@
+/*
+ * pcaputil.c
+ *
+ * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
+ *
+ * $Id: pcaputil.c,v 1.2 2001/03/15 08:33:04 dugsong Exp $
+ */
+
+#include "config.h"
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <err.h>
+#include <pcap.h>
+#ifdef BSD
+#include <pcap-int.h>
+#endif
+
+#include "pcaputil.h"
+
+#ifdef BSD
+static int
+bpf_immediate(int fd, int on)
+{
+	return (ioctl(fd, BIOCIMMEDIATE, &on));
+}
+#endif
+
+int
+pcap_dloff(pcap_t *pd)
+{
+	int offset = -1;
+
+	switch (pcap_datalink(pd)) {
+	case DLT_EN10MB:
+		offset = 14;
+		break;
+	case DLT_IEEE802:
+		offset = 22;
+		break;
+	case DLT_FDDI:
+		offset = 21;
+		break;
+#ifdef DLT_LOOP
+	case DLT_LOOP:
+#endif
+	case DLT_NULL:
+		offset = 4;
+		break;
+	default:
+		warnx("unsupported datalink type");
+		break;
+	}
+	return (offset);
+}
+
+pcap_t *
+pcap_init(char *intf, char *filter, int snaplen)
+{
+	pcap_t *pd;
+	u_int net, mask;
+	struct bpf_program fcode;
+	char ebuf[PCAP_ERRBUF_SIZE];
+
+	if (intf == NULL && (intf = pcap_lookupdev(ebuf)) == NULL) {
+		warnx("%s", ebuf);
+		return (NULL);
+	}
+	if ((pd = pcap_open_live(intf, snaplen, 1, 512, ebuf)) == NULL) {
+		warnx("%s", ebuf);
+		return (NULL);
+	}
+	if (pcap_lookupnet(intf, &net, &mask, ebuf) == -1) {
+		warnx("%s", ebuf);
+		return (NULL);
+	}  
+	if (pcap_compile(pd, &fcode, filter, 1, mask) < 0) {
+		pcap_perror(pd, "pcap_compile");
+		return (NULL);
+	}
+	if (pcap_setfilter(pd, &fcode) == -1) {
+		pcap_perror(pd, "pcap_compile");
+		return (NULL);
+	}
+#ifdef BSD
+	if (bpf_immediate(pd->fd, 1) < 0) {
+		perror("ioctl");
+		return (NULL);
+	}
+#endif
+	return (pd);
+}
+
+/* from tcpdump util.c. */
+char *
+copy_argv(char **argv)
+{
+	char **p, *buf, *src, *dst;
+	u_int len = 0;
+
+	p = argv;
+	if (*p == 0)
+		return (0);
+
+	while (*p)
+		len += strlen(*p++) + 1;
+
+	if ((buf = (char *)malloc(len)) == NULL)
+		err(1, "copy_argv: malloc");
+
+	p = argv;
+	dst = buf;
+
+	while ((src = *p++) != NULL) {
+		while ((*dst++ = *src++) != '\0')
+			;
+		dst[-1] = ' ';
+	}
+	dst[-1] = '\0';
+
+	return (buf);
+}
diff --git a/pcaputil.h b/pcaputil.h
@@ -0,0 +1,20 @@
+/*
+ * pcaputil.h
+ *
+ * pcap utility routines.
+ *
+ * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
+ *
+ * $Id: pcaputil.h,v 1.2 2001/03/15 08:33:06 dugsong Exp $
+ */
+
+#ifndef PCAPUTIL_H
+#define PCAPUTIL_H
+
+pcap_t *pcap_init(char *intf, char *filter, int snaplen);
+
+int	pcap_dloff(pcap_t *pd);
+
+char   *copy_argv(char **argv);
+
+#endif /* PCAPUTIL_H */