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8e874af0b8
dsniff/dsniff-2.4-libnet_11.patch

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Patch for dsniff >= 2.4b1, which adds support for libnet >= 1.1 having a
completely rewritten API.
--- dsniff-2.4b1/arpspoof.c 2006-06-09 13:35:29.000000000 +0300
+++ dsniff-2.4b1/arpspoof.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -27,7 +27,7 @@
extern char *ether_ntoa(struct ether_addr *);
-static struct libnet_link_int *llif;
+static libnet_t *l;
static struct ether_addr spoof_mac, target_mac;
static in_addr_t spoof_ip, target_ip;
static char *intf;
@@ -41,47 +41,49 @@
}
static int
-arp_send(struct libnet_link_int *llif, char *dev,
- int op, u_char *sha, in_addr_t spa, u_char *tha, in_addr_t tpa)
+arp_send(libnet_t *l, int op, u_int8_t *sha,
+ in_addr_t spa, u_int8_t *tha, in_addr_t tpa)
{
- char ebuf[128];
- u_char pkt[60];
-
+ int retval;
+
if (sha == NULL &&
- (sha = (u_char *)libnet_get_hwaddr(llif, dev, ebuf)) == NULL) {
+ (sha = (u_int8_t *)libnet_get_hwaddr(l)) == NULL) {
return (-1);
}
if (spa == 0) {
- if ((spa = libnet_get_ipaddr(llif, dev, ebuf)) == 0)
+ if ((spa = libnet_get_ipaddr4(l)) == -1)
return (-1);
- spa = htonl(spa); /* XXX */
}
if (tha == NULL)
tha = "\xff\xff\xff\xff\xff\xff";
- libnet_build_ethernet(tha, sha, ETHERTYPE_ARP, NULL, 0, pkt);
+ libnet_autobuild_arp(op, sha, (u_int8_t *)&spa,
+ tha, (u_int8_t *)&tpa, l);
+ libnet_build_ethernet(tha, sha, ETHERTYPE_ARP, NULL, 0, l, 0);
- libnet_build_arp(ARPHRD_ETHER, ETHERTYPE_IP, ETHER_ADDR_LEN, 4,
- op, sha, (u_char *)&spa, tha, (u_char *)&tpa,
- NULL, 0, pkt + ETH_H);
-
fprintf(stderr, "%s ",
ether_ntoa((struct ether_addr *)sha));
if (op == ARPOP_REQUEST) {
fprintf(stderr, "%s 0806 42: arp who-has %s tell %s\n",
ether_ntoa((struct ether_addr *)tha),
- libnet_host_lookup(tpa, 0),
- libnet_host_lookup(spa, 0));
+ libnet_addr2name4(tpa, LIBNET_DONT_RESOLVE),
+ libnet_addr2name4(spa, LIBNET_DONT_RESOLVE));
}
else {
fprintf(stderr, "%s 0806 42: arp reply %s is-at ",
ether_ntoa((struct ether_addr *)tha),
- libnet_host_lookup(spa, 0));
+ libnet_addr2name4(spa, LIBNET_DONT_RESOLVE));
fprintf(stderr, "%s\n",
ether_ntoa((struct ether_addr *)sha));
}
- return (libnet_write_link_layer(llif, dev, pkt, sizeof(pkt)) == sizeof(pkt));
+ retval = libnet_write(l);
+ if (retval)
+ fprintf(stderr, "%s", libnet_geterror(l));
+
+ libnet_clear_packet(l);
+
+ return retval;
}
#ifdef __linux__
@@ -119,7 +121,7 @@
/* XXX - force the kernel to arp. feh. */
arp_force(ip);
#else
- arp_send(llif, intf, ARPOP_REQUEST, NULL, 0, NULL, ip);
+ arp_send(l, ARPOP_REQUEST, NULL, 0, NULL, ip);
#endif
sleep(1);
}
@@ -136,9 +138,9 @@
if (arp_find(spoof_ip, &spoof_mac)) {
for (i = 0; i < 3; i++) {
/* XXX - on BSD, requires ETHERSPOOF kernel. */
- arp_send(llif, intf, ARPOP_REPLY,
- (u_char *)&spoof_mac, spoof_ip,
- (target_ip ? (u_char *)&target_mac : NULL),
+ arp_send(l, ARPOP_REPLY,
+ (u_int8_t *)&spoof_mac, spoof_ip,
+ (target_ip ? (u_int8_t *)&target_mac : NULL),
target_ip);
sleep(1);
}
@@ -151,7 +153,8 @@
{
extern char *optarg;
extern int optind;
- char ebuf[PCAP_ERRBUF_SIZE];
+ char pcap_ebuf[PCAP_ERRBUF_SIZE];
+ char libnet_ebuf[LIBNET_ERRBUF_SIZE];
int c;
intf = NULL;
@@ -163,7 +166,7 @@
intf = optarg;
break;
case 't':
- if ((target_ip = libnet_name_resolve(optarg, 1)) == -1)
+ if ((target_ip = libnet_name2addr4(l, optarg, LIBNET_RESOLVE)) == -1)
usage();
break;
default:
@@ -176,26 +179,26 @@
if (argc != 1)
usage();
- if ((spoof_ip = libnet_name_resolve(argv[0], 1)) == -1)
+ if ((spoof_ip = libnet_name2addr4(l, argv[0], LIBNET_RESOLVE)) == -1)
usage();
- if (intf == NULL && (intf = pcap_lookupdev(ebuf)) == NULL)
- errx(1, "%s", ebuf);
+ if (intf == NULL && (intf = pcap_lookupdev(pcap_ebuf)) == NULL)
+ errx(1, "%s", pcap_ebuf);
- if ((llif = libnet_open_link_interface(intf, ebuf)) == 0)
- errx(1, "%s", ebuf);
+ if ((l = libnet_init(LIBNET_LINK, intf, libnet_ebuf)) == NULL)
+ errx(1, "%s", libnet_ebuf);
if (target_ip != 0 && !arp_find(target_ip, &target_mac))
errx(1, "couldn't arp for host %s",
- libnet_host_lookup(target_ip, 0));
+ libnet_addr2name4(target_ip, LIBNET_DONT_RESOLVE));
signal(SIGHUP, cleanup);
signal(SIGINT, cleanup);
signal(SIGTERM, cleanup);
for (;;) {
- arp_send(llif, intf, ARPOP_REPLY, NULL, spoof_ip,
- (target_ip ? (u_char *)&target_mac : NULL),
+ arp_send(l, ARPOP_REPLY, NULL, spoof_ip,
+ (target_ip ? (u_int8_t *)&target_mac : NULL),
target_ip);
sleep(2);
}
--- dsniff-2.4b1/dnsspoof.c 2001-03-15 10:33:03.000000000 +0200
+++ dsniff-2.4b1/dnsspoof.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -38,7 +38,7 @@
pcap_t *pcap_pd = NULL;
int pcap_off = -1;
-int lnet_sock = -1;
+libnet_t *l;
u_long lnet_ip = -1;
static void
@@ -90,19 +90,18 @@
dns_init(char *dev, char *filename)
{
FILE *f;
- struct libnet_link_int *llif;
+ libnet_t *l;
+ char libnet_ebuf[LIBNET_ERRBUF_SIZE];
struct dnsent *de;
char *ip, *name, buf[1024];
- if ((llif = libnet_open_link_interface(dev, buf)) == NULL)
- errx(1, "%s", buf);
+ if ((l = libnet_init(LIBNET_LINK, dev, libnet_ebuf)) == NULL)
+ errx(1, "%s", libnet_ebuf);
- if ((lnet_ip = libnet_get_ipaddr(llif, dev, buf)) == -1)
- errx(1, "%s", buf);
+ if ((lnet_ip = libnet_get_ipaddr4(l)) == -1)
+ errx(1, "%s", libnet_geterror(l));
- lnet_ip = htonl(lnet_ip);
-
- libnet_close_link_interface(llif);
+ libnet_destroy(l);
SLIST_INIT(&dns_entries);
@@ -180,7 +179,7 @@
static void
dns_spoof(u_char *u, const struct pcap_pkthdr *pkthdr, const u_char *pkt)
{
- struct libnet_ip_hdr *ip;
+ struct libnet_ipv4_hdr *ip;
struct libnet_udp_hdr *udp;
HEADER *dns;
char name[MAXHOSTNAMELEN];
@@ -189,7 +188,7 @@
in_addr_t dst;
u_short type, class;
- ip = (struct libnet_ip_hdr *)(pkt + pcap_off);
+ ip = (struct libnet_ipv4_hdr *)(pkt + pcap_off);
udp = (struct libnet_udp_hdr *)(pkt + pcap_off + (ip->ip_hl * 4));
dns = (HEADER *)(udp + 1);
p = (u_char *)(dns + 1);
@@ -212,7 +211,7 @@
if (class != C_IN)
return;
- p = buf + IP_H + UDP_H + dnslen;
+ p = buf + dnslen;
if (type == T_A) {
if ((dst = dns_lookup_a(name)) == -1)
@@ -234,38 +233,38 @@
anslen += 12;
}
else return;
-
- libnet_build_ip(UDP_H + dnslen + anslen, 0, libnet_get_prand(PRu16),
- 0, 64, IPPROTO_UDP, ip->ip_dst.s_addr,
- ip->ip_src.s_addr, NULL, 0, buf);
-
- libnet_build_udp(ntohs(udp->uh_dport), ntohs(udp->uh_sport),
- NULL, dnslen + anslen, buf + IP_H);
- memcpy(buf + IP_H + UDP_H, (u_char *)dns, dnslen);
+ memcpy(buf, (u_char *)dns, dnslen);
- dns = (HEADER *)(buf + IP_H + UDP_H);
+ dns = (HEADER *)buf;
dns->qr = dns->ra = 1;
if (type == T_PTR) dns->aa = 1;
dns->ancount = htons(1);
dnslen += anslen;
+
+ libnet_clear_packet(l);
+ libnet_build_udp(ntohs(udp->uh_dport), ntohs(udp->uh_sport),
+ LIBNET_UDP_H + dnslen, 0,
+ (u_int8_t *)buf, dnslen, l, 0);
+
+ libnet_build_ipv4(LIBNET_IPV4_H + LIBNET_UDP_H + dnslen, 0,
+ libnet_get_prand(LIBNET_PRu16), 0, 64, IPPROTO_UDP, 0,
+ ip->ip_dst.s_addr, ip->ip_src.s_addr, NULL, 0, l, 0);
- libnet_do_checksum(buf, IPPROTO_UDP, UDP_H + dnslen);
-
- if (libnet_write_ip(lnet_sock, buf, IP_H + UDP_H + dnslen) < 0)
+ if (libnet_write(l) < 0)
warn("write");
fprintf(stderr, "%s.%d > %s.%d: %d+ %s? %s\n",
- libnet_host_lookup(ip->ip_src.s_addr, 0), ntohs(udp->uh_sport),
- libnet_host_lookup(ip->ip_dst.s_addr, 0), ntohs(udp->uh_dport),
+ libnet_addr2name4(ip->ip_src.s_addr, 0), ntohs(udp->uh_sport),
+ libnet_addr2name4(ip->ip_dst.s_addr, 0), ntohs(udp->uh_dport),
ntohs(dns->id), type == T_A ? "A" : "PTR", name);
}
static void
cleanup(int sig)
{
- libnet_close_raw_sock(lnet_sock);
+ libnet_destroy(l);
pcap_close(pcap_pd);
exit(0);
}
@@ -276,6 +275,7 @@
extern char *optarg;
extern int optind;
char *p, *dev, *hosts, buf[1024];
+ char ebuf[LIBNET_ERRBUF_SIZE];
int i;
dev = hosts = NULL;
@@ -306,7 +306,7 @@
strlcpy(buf, p, sizeof(buf));
}
else snprintf(buf, sizeof(buf), "udp dst port 53 and not src %s",
- libnet_host_lookup(lnet_ip, 0));
+ libnet_addr2name4(lnet_ip, LIBNET_DONT_RESOLVE));
if ((pcap_pd = pcap_init(dev, buf, 128)) == NULL)
errx(1, "couldn't initialize sniffing");
@@ -314,10 +314,10 @@
if ((pcap_off = pcap_dloff(pcap_pd)) < 0)
errx(1, "couldn't determine link layer offset");
- if ((lnet_sock = libnet_open_raw_sock(IPPROTO_RAW)) == -1)
+ if ((l = libnet_init(LIBNET_RAW4, dev, ebuf)) == NULL)
errx(1, "couldn't initialize sending");
- libnet_seed_prand();
+ libnet_seed_prand(l);
signal(SIGHUP, cleanup);
signal(SIGINT, cleanup);
--- dsniff-2.4b1/filesnarf.c 2006-06-09 13:35:29.000000000 +0300
+++ dsniff-2.4b1/filesnarf.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -134,8 +134,8 @@
int fd;
warnx("%s.%d > %s.%d: %s (%d@%d)",
- libnet_host_lookup(addr->daddr, 0), addr->dest,
- libnet_host_lookup(addr->saddr, 0), addr->source,
+ libnet_addr2name4(addr->daddr, LIBNET_DONT_RESOLVE), addr->dest,
+ libnet_addr2name4(addr->saddr, LIBNET_DONT_RESOLVE), addr->source,
ma->filename, len, ma->offset);
if ((fd = open(ma->filename, O_WRONLY|O_CREAT, 0644)) >= 0) {
@@ -353,7 +353,7 @@
}
static void
-decode_udp_nfs(struct libnet_ip_hdr *ip)
+decode_udp_nfs(struct libnet_ipv4_hdr *ip)
{
static struct tuple4 addr;
struct libnet_udp_hdr *udp;
--- dsniff-2.4b1/macof.c 2001-03-15 10:33:04.000000000 +0200
+++ dsniff-2.4b1/macof.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -48,8 +48,8 @@
static void
gen_mac(u_char *mac)
{
- *((in_addr_t *)mac) = libnet_get_prand(PRu32);
- *((u_short *)(mac + 4)) = libnet_get_prand(PRu16);
+ *((in_addr_t *)mac) = libnet_get_prand(LIBNET_PRu32);
+ *((u_short *)(mac + 4)) = libnet_get_prand(LIBNET_PRu16);
}
int
@@ -59,22 +59,23 @@
extern int optind;
int c, i;
struct libnet_link_int *llif;
- char ebuf[PCAP_ERRBUF_SIZE];
+ char pcap_ebuf[PCAP_ERRBUF_SIZE];
+ char libnet_ebuf[LIBNET_ERRBUF_SIZE];
u_char sha[ETHER_ADDR_LEN], tha[ETHER_ADDR_LEN];
in_addr_t src, dst;
u_short sport, dport;
u_int32_t seq;
- u_char pkt[ETH_H + IP_H + TCP_H];
+ libnet_t *l;
while ((c = getopt(argc, argv, "vs:d:e:x:y:i:n:h?V")) != -1) {
switch (c) {
case 'v':
break;
case 's':
- Src = libnet_name_resolve(optarg, 0);
+ Src = libnet_name2addr4(l, optarg, 0);
break;
case 'd':
- Dst = libnet_name_resolve(optarg, 0);
+ Dst = libnet_name2addr4(l, optarg, 0);
break;
case 'e':
Tha = (u_char *)ether_aton(optarg);
@@ -101,13 +102,13 @@
if (argc != 0)
usage();
- if (!Intf && (Intf = pcap_lookupdev(ebuf)) == NULL)
- errx(1, "%s", ebuf);
+ if (!Intf && (Intf = pcap_lookupdev(pcap_ebuf)) == NULL)
+ errx(1, "%s", pcap_ebuf);
- if ((llif = libnet_open_link_interface(Intf, ebuf)) == 0)
- errx(1, "%s", ebuf);
+ if ((l = libnet_init(LIBNET_LINK, Intf, libnet_ebuf)) == NULL)
+ errx(1, "%s", libnet_ebuf);
- libnet_seed_prand();
+ libnet_seed_prand(l);
for (i = 0; i != Repeat; i++) {
@@ -117,39 +118,39 @@
else memcpy(tha, Tha, sizeof(tha));
if (Src != 0) src = Src;
- else src = libnet_get_prand(PRu32);
+ else src = libnet_get_prand(LIBNET_PRu32);
if (Dst != 0) dst = Dst;
- else dst = libnet_get_prand(PRu32);
+ else dst = libnet_get_prand(LIBNET_PRu32);
if (Sport != 0) sport = Sport;
- else sport = libnet_get_prand(PRu16);
+ else sport = libnet_get_prand(LIBNET_PRu16);
if (Dport != 0) dport = Dport;
- else dport = libnet_get_prand(PRu16);
+ else dport = libnet_get_prand(LIBNET_PRu16);
- seq = libnet_get_prand(PRu32);
-
- libnet_build_ethernet(tha, sha, ETHERTYPE_IP, NULL, 0, pkt);
-
- libnet_build_ip(TCP_H, 0, libnet_get_prand(PRu16), 0, 64,
- IPPROTO_TCP, src, dst, NULL, 0, pkt + ETH_H);
+ seq = libnet_get_prand(LIBNET_PRu32);
libnet_build_tcp(sport, dport, seq, 0, TH_SYN, 512,
- 0, NULL, 0, pkt + ETH_H + IP_H);
+ 0, 0, LIBNET_TCP_H, NULL, 0, l, 0);
- libnet_do_checksum(pkt + ETH_H, IPPROTO_IP, IP_H);
- libnet_do_checksum(pkt + ETH_H, IPPROTO_TCP, TCP_H);
+ libnet_build_ipv4(LIBNET_TCP_H, 0,
+ libnet_get_prand(LIBNET_PRu16), 0, 64,
+ IPPROTO_TCP, 0, src, dst, NULL, 0, l, 0);
- if (libnet_write_link_layer(llif, Intf, pkt, sizeof(pkt)) < 0)
+ libnet_build_ethernet(tha, sha, ETHERTYPE_IP, NULL, 0, l, 0);
+
+ if (libnet_write(l) < 0)
errx(1, "write");
+ libnet_clear_packet(l);
+
fprintf(stderr, "%s ",
ether_ntoa((struct ether_addr *)sha));
fprintf(stderr, "%s %s.%d > %s.%d: S %u:%u(0) win 512\n",
ether_ntoa((struct ether_addr *)tha),
- libnet_host_lookup(Src, 0), sport,
- libnet_host_lookup(Dst, 0), dport, seq, seq);
+ libnet_addr2name4(Src, 0), sport,
+ libnet_addr2name4(Dst, 0), dport, seq, seq);
}
exit(0);
}
--- dsniff-2.4b1/record.c 2001-03-15 10:33:04.000000000 +0200
+++ dsniff-2.4b1/record.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -65,8 +65,8 @@
tm = localtime(&rec->time);
strftime(tstr, sizeof(tstr), "%x %X", tm);
- srcp = libnet_host_lookup(rec->src, Opt_dns);
- dstp = libnet_host_lookup(rec->dst, Opt_dns);
+ srcp = libnet_addr2name4(rec->src, Opt_dns);
+ dstp = libnet_addr2name4(rec->dst, Opt_dns);
if ((pr = getprotobynumber(rec->proto)) == NULL)
protop = "unknown";
--- dsniff-2.4b1/sshmitm.c 2001-03-15 10:33:04.000000000 +0200
+++ dsniff-2.4b1/sshmitm.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -389,7 +389,7 @@
if (argc < 1)
usage();
- if ((ip = libnet_name_resolve(argv[0], 1)) == -1)
+ if ((ip = libnet_name2addr4(NULL, argv[0], LIBNET_RESOLVE)) == -1)
usage();
if (argc == 2 && (rport = atoi(argv[1])) == 0)
--- dsniff-2.4b1/tcpkill.c 2001-03-17 10:10:43.000000000 +0200
+++ dsniff-2.4b1/tcpkill.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -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);
- 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 @@
{
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 */
--- dsniff-2.4b1/tcpnice.c 2001-03-17 09:41:51.000000000 +0200
+++ dsniff-2.4b1/tcpnice.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -41,107 +41,106 @@
}
static void
-send_tcp_window_advertisement(int sock, struct libnet_ip_hdr *ip,
+send_tcp_window_advertisement(libnet_t *l, struct libnet_ipv4_hdr *ip,
struct libnet_tcp_hdr *tcp)
{
int len;
ip->ip_hl = 5;
- ip->ip_len = htons(IP_H + TCP_H);
- ip->ip_id = libnet_get_prand(PRu16);
- memcpy(buf, (u_char *)ip, IP_H);
+ ip->ip_len = htons(LIBNET_IPV4_H + LIBNET_TCP_H);
+ ip->ip_id = libnet_get_prand(LIBNET_PRu16);
+ memcpy(buf, (u_char *)ip, LIBNET_IPV4_H);
tcp->th_off = 5;
tcp->th_win = htons(MIN_WIN);
- memcpy(buf + IP_H, (u_char *)tcp, TCP_H);
+ memcpy(buf + LIBNET_IPV4_H, (u_char *)tcp, LIBNET_TCP_H);
- libnet_do_checksum(buf, IPPROTO_TCP, TCP_H);
+ libnet_do_checksum(l, buf, IPPROTO_TCP, LIBNET_TCP_H);
- len = IP_H + TCP_H;
+ len = LIBNET_IPV4_H + LIBNET_TCP_H;
- if (libnet_write_ip(sock, buf, len) != len)
+ if (libnet_write_raw_ipv4(l, buf, len) != len)
warn("write");
fprintf(stderr, "%s:%d > %s:%d: . ack %lu win %d\n",
- libnet_host_lookup(ip->ip_src.s_addr, 0), ntohs(tcp->th_sport),
- libnet_host_lookup(ip->ip_dst.s_addr, 0), ntohs(tcp->th_dport),
+ libnet_addr2name4(ip->ip_src.s_addr, 0), ntohs(tcp->th_sport),
+ libnet_addr2name4(ip->ip_dst.s_addr, 0), ntohs(tcp->th_dport),
ntohl(tcp->th_ack), 1);
}
static void
-send_icmp_source_quench(int sock, struct libnet_ip_hdr *ip)
+send_icmp_source_quench(libnet_t *l, struct libnet_ipv4_hdr *ip)
{
- struct libnet_icmp_hdr *icmp;
+ struct libnet_icmpv4_hdr *icmp;
int len;
len = (ip->ip_hl * 4) + 8;
- libnet_build_ip(ICMP_ECHO_H + len, 0, libnet_get_prand(PRu16),
- 0, 64, IPPROTO_ICMP, ip->ip_dst.s_addr,
- ip->ip_src.s_addr, NULL, 0, buf);
-
- icmp = (struct libnet_icmp_hdr *)(buf + IP_H);
+ icmp = (struct libnet_icmpv4_hdr *)(buf + LIBNET_IPV4_H);
icmp->icmp_type = ICMP_SOURCEQUENCH;
icmp->icmp_code = 0;
- memcpy((u_char *)icmp + ICMP_ECHO_H, (u_char *)ip, len);
+ memcpy((u_char *)icmp + LIBNET_ICMPV4_ECHO_H, (u_char *)ip, len);
- libnet_do_checksum(buf, IPPROTO_ICMP, ICMP_ECHO_H + len);
+ len += LIBNET_ICMPV4_ECHO_H;
- len += (IP_H + ICMP_ECHO_H);
+ libnet_build_ipv4(LIBNET_IPV4_H + len, 0,
+ libnet_get_prand(LIBNET_PRu16), 0, 64, IPPROTO_ICMP,
+ 0, ip->ip_dst.s_addr, ip->ip_src.s_addr,
+ (u_int8_t *) icmp, len, l, 0);
- if (libnet_write_ip(sock, buf, len) != len)
+ if (libnet_write(l) != len)
warn("write");
fprintf(stderr, "%s > %s: icmp: source quench\n",
- libnet_host_lookup(ip->ip_dst.s_addr, 0),
- libnet_host_lookup(ip->ip_src.s_addr, 0));
+ libnet_addr2name4(ip->ip_dst.s_addr, 0),
+ libnet_addr2name4(ip->ip_src.s_addr, 0));
}
static void
-send_icmp_frag_needed(int sock, struct libnet_ip_hdr *ip)
+send_icmp_frag_needed(libnet_t *l, struct libnet_ipv4_hdr *ip)
{
- struct libnet_icmp_hdr *icmp;
+ struct libnet_icmpv4_hdr *icmp;
int len;
len = (ip->ip_hl * 4) + 8;
- libnet_build_ip(ICMP_MASK_H + len, 4, libnet_get_prand(PRu16),
- 0, 64, IPPROTO_ICMP, ip->ip_dst.s_addr,
- ip->ip_src.s_addr, NULL, 0, buf);
-
- icmp = (struct libnet_icmp_hdr *)(buf + IP_H);
+ icmp = (struct libnet_icmpv4_hdr *)(buf + LIBNET_IPV4_H);
icmp->icmp_type = ICMP_UNREACH;
icmp->icmp_code = ICMP_UNREACH_NEEDFRAG;
icmp->hun.frag.pad = 0;
icmp->hun.frag.mtu = htons(MIN_MTU);
- memcpy((u_char *)icmp + ICMP_MASK_H, (u_char *)ip, len);
+ memcpy((u_char *)icmp + LIBNET_ICMPV4_MASK_H, (u_char *)ip, len);
- libnet_do_checksum(buf, IPPROTO_ICMP, ICMP_MASK_H + len);
-
- len += (IP_H + ICMP_MASK_H);
+ len += LIBNET_ICMPV4_MASK_H;
+
+ libnet_build_ipv4(LIBNET_IPV4_H + len, 4,
+ libnet_get_prand(LIBNET_PRu16), 0, 64, IPPROTO_ICMP,
+ 0, ip->ip_dst.s_addr, ip->ip_src.s_addr,
+ (u_int8_t *) icmp, len, l, 0);
- if (libnet_write_ip(sock, buf, len) != len)
+ if (libnet_write(l) != len)
warn("write");
fprintf(stderr, "%s > %s: icmp: ",
- libnet_host_lookup(ip->ip_dst.s_addr, 0),
- libnet_host_lookup(ip->ip_src.s_addr, 0));
+ libnet_addr2name4(ip->ip_dst.s_addr, 0),
+ libnet_addr2name4(ip->ip_src.s_addr, 0));
fprintf(stderr, "%s unreachable - need to frag (mtu %d)\n",
- libnet_host_lookup(ip->ip_src.s_addr, 0), MIN_MTU);
+ libnet_addr2name4(ip->ip_src.s_addr, 0), MIN_MTU);
}
static void
tcp_nice_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;
- int *sock, len;
+ int 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;
@@ -151,11 +150,11 @@
if (ntohs(ip->ip_len) > (ip->ip_hl << 2) + (tcp->th_off << 2)) {
if (Opt_icmp)
- send_icmp_source_quench(*sock, ip);
+ send_icmp_source_quench(l, ip);
if (Opt_win)
- send_tcp_window_advertisement(*sock, ip, tcp);
+ send_tcp_window_advertisement(l, ip, tcp);
if (Opt_pmtu)
- send_icmp_frag_needed(*sock, ip);
+ send_icmp_frag_needed(l, ip);
}
}
@@ -164,8 +163,10 @@
{
extern char *optarg;
extern int optind;
- int c, sock;
+ int c;
char *intf, *filter, ebuf[PCAP_ERRBUF_SIZE];
+ char libnet_ebuf[LIBNET_ERRBUF_SIZE];
+ libnet_t *l;
pcap_t *pd;
intf = NULL;
@@ -209,14 +210,14 @@
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_nice_cb, (u_char *)&sock);
+ pcap_loop(pd, -1, tcp_nice_cb, (u_char *)l);
/* NOTREACHED */
--- dsniff-2.4b1/tcp_raw.c 2001-03-15 10:33:04.000000000 +0200
+++ dsniff-2.4b1/tcp_raw.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -119,7 +119,7 @@
}
struct iovec *
-tcp_raw_input(struct libnet_ip_hdr *ip, struct libnet_tcp_hdr *tcp, int len)
+tcp_raw_input(struct libnet_ipv4_hdr *ip, struct libnet_tcp_hdr *tcp, int len)
{
struct tha tha;
struct tcp_conn *conn;
@@ -131,7 +131,7 @@
/* Verify TCP checksum. */
cksum = tcp->th_sum;
- libnet_do_checksum((u_char *) ip, IPPROTO_TCP, len);
+ libnet_do_checksum(NULL, (u_char *) ip, IPPROTO_TCP, len);
if (cksum != tcp->th_sum)
return (NULL);
--- dsniff-2.4b1/tcp_raw.h 2001-03-15 10:33:06.000000000 +0200
+++ dsniff-2.4b1/tcp_raw.h.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -15,7 +15,7 @@
u_short sport, u_short dport,
u_char *buf, int len);
-struct iovec *tcp_raw_input(struct libnet_ip_hdr *ip,
+struct iovec *tcp_raw_input(struct libnet_ipv4_hdr *ip,
struct libnet_tcp_hdr *tcp, int len);
void tcp_raw_timeout(int timeout, tcp_raw_callback_t callback);
--- dsniff-2.4b1/trigger.c 2001-03-15 10:33:05.000000000 +0200
+++ dsniff-2.4b1/trigger.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -276,7 +276,7 @@
}
void
-trigger_ip(struct libnet_ip_hdr *ip)
+trigger_ip(struct libnet_ipv4_hdr *ip)
{
struct trigger *t, tr;
u_char *buf;
@@ -305,7 +305,7 @@
/* libnids needs a nids_register_udp()... */
void
-trigger_udp(struct libnet_ip_hdr *ip)
+trigger_udp(struct libnet_ipv4_hdr *ip)
{
struct trigger *t, tr;
struct libnet_udp_hdr *udp;
@@ -437,7 +437,7 @@
}
void
-trigger_tcp_raw(struct libnet_ip_hdr *ip)
+trigger_tcp_raw(struct libnet_ipv4_hdr *ip)
{
struct trigger *t, tr;
struct libnet_tcp_hdr *tcp;
--- dsniff-2.4b1/trigger.h 2001-03-15 10:33:06.000000000 +0200
+++ dsniff-2.4b1/trigger.h.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -24,10 +24,10 @@
int trigger_set_tcp(int port, char *name);
int trigger_set_rpc(int program, char *name);
-void trigger_ip(struct libnet_ip_hdr *ip);
-void trigger_udp(struct libnet_ip_hdr *ip);
+void trigger_ip(struct libnet_ipv4_hdr *ip);
+void trigger_udp(struct libnet_ipv4_hdr *ip);
void trigger_tcp(struct tcp_stream *ts, void **conn_save);
-void trigger_tcp_raw(struct libnet_ip_hdr *ip);
+void trigger_tcp_raw(struct libnet_ipv4_hdr *ip);
void trigger_tcp_raw_timeout(int signal);
void trigger_rpc(int program, int proto, int port);
--- dsniff-2.4b1/urlsnarf.c 2006-06-09 13:35:29.000000000 +0300
+++ dsniff-2.4b1/urlsnarf.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -145,14 +145,14 @@
if (user == NULL)
user = "-";
if (vhost == NULL)
- vhost = libnet_host_lookup(addr->daddr, Opt_dns);
+ vhost = libnet_addr2name4(addr->daddr, Opt_dns);
if (referer == NULL)
referer = "-";
if (agent == NULL)
agent = "-";
printf("%s - %s [%s] \"%s http://%s%s\" - - \"%s\" \"%s\"\n",
- libnet_host_lookup(addr->saddr, Opt_dns),
+ libnet_addr2name4(addr->saddr, Opt_dns),
user, timestamp(), req, vhost, uri, referer, agent);
}
fflush(stdout);
--- dsniff-2.4b1/webmitm.c 2001-03-17 10:35:05.000000000 +0200
+++ dsniff-2.4b1/webmitm.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -242,7 +242,7 @@
word = buf_tok(&msg, "/", 1);
vhost = buf_strdup(word);
}
- ssin.sin_addr.s_addr = libnet_name_resolve(vhost, 1);
+ ssin.sin_addr.s_addr = libnet_name2addr4(NULL, vhost, 1);
free(vhost);
if (ssin.sin_addr.s_addr == ntohl(INADDR_LOOPBACK) ||
@@ -510,7 +510,7 @@
argv += optind;
if (argc == 1) {
- if ((static_host = libnet_name_resolve(argv[0], 1)) == -1)
+ if ((static_host = libnet_name2addr4(NULL, argv[0], 1)) == -1)
usage();
}
else if (argc != 0) usage();
--- dsniff-2.4b1/webspy.c 2006-06-09 13:35:29.000000000 +0300
+++ dsniff-2.4b1/webspy.c.libnet_11 2006-06-09 13:35:29.000000000 +0300
@@ -126,7 +126,7 @@
if (auth == NULL)
auth = "";
if (vhost == NULL)
- vhost = libnet_host_lookup(addr->daddr, 0);
+ vhost = libnet_addr2name4(addr->daddr, 0);
snprintf(cmd, sizeof(cmd), "openURL(http://%s%s%s%s)",
auth, *auth ? "@" : "", vhost, uri);
@@ -205,7 +205,7 @@
cmdtab[0] = cmd;
cmdtab[1] = NULL;
- if ((host = libnet_name_resolve(argv[0], 1)) == -1)
+ if ((host = libnet_name2addr4(NULL, argv[0], 1)) == -1)
errx(1, "unknown host");
if ((dpy = XOpenDisplay(NULL)) == NULL)
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