diff options
Diffstat (limited to 'package/dsniff/patches/patch-tcpkill_c')
| -rw-r--r-- | package/dsniff/patches/patch-tcpkill_c | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/package/dsniff/patches/patch-tcpkill_c b/package/dsniff/patches/patch-tcpkill_c new file mode 100644 index 000000000..a49a1adf7 --- /dev/null +++ b/package/dsniff/patches/patch-tcpkill_c @@ -0,0 +1,105 @@ +--- dsniff-2.4.orig/tcpkill.c 2001-03-17 09:10:43.000000000 +0100 ++++ dsniff-2.4/tcpkill.c 2009-12-11 12:59:42.000000000 +0100 +@@ -39,17 +39,18 @@ usage(void) + 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 @@ tcp_kill_cb(u_char *user, const struct p + 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); + +- if (libnet_write_ip(*sock, buf, sizeof(buf)) < 0) +- warn("write_ip"); ++ 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); + } +@@ -95,8 +93,10 @@ main(int argc, char *argv[]) + { + 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 @@ main(int argc, char *argv[]) + 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 */ + |