/
firewall6.c
1962 lines (1808 loc) · 69.7 KB
/
firewall6.c
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/*
* Tests the implementation of ACLs for bypassing attacks
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <time.h>
#include <pcap.h>
#include "thc-ipv6.h"
extern int do_6in4;
extern int do_pppoe;
extern int do_hdr_vlan;
extern int do_hdr_off;
int sports[] = {20, 21, 22, 25, 53, 80, 111, 123, 179, 443, 8080, -1};
int sports2[] = {20, 53, 67, 68, 69, 111, 123, 161, 162, 2049, -1};
int matched = 0, port = -1, udp = 0, sport = 21000, cport, count = 0, poffset,
poffset2, ptype, only = 0, pingtest = 0, do_hop = 0;
unsigned char *dst, *psrc, is_srcport = 0;
pcap_t * p;
void help(char *prg) {
printf("%s %s (c) 2022 by %s %s\n\n", prg, VERSION, AUTHOR, RESOURCE);
printf("Syntax: %s [-Hu] interface destination port [test-case-no]\n\n", prg);
printf("Performs various ACL bypass attempts to check implementations.\n");
printf(
"Defaults to TCP ports, option -u switches to UDP.\nOption -H prints the "
"hop count.\n");
printf(
"For all test cases to work, ICMPv6 ping to the destination must be "
"allowed.\n");
exit(-1);
}
void ignoreit(u_char *foo, const struct pcap_pkthdr *header,
const unsigned char *data) {
return;
}
void check_packet(u_char *foo, const struct pcap_pkthdr *header,
const unsigned char *data) {
unsigned char * ptr = (unsigned char *)(data + 14);
int len = header->caplen - 14, nxt = 6, offset = 0;
unsigned short int rsport, rdport;
matched = -1;
if (do_hdr_size) {
ptr = (unsigned char *)(data + do_hdr_size);
len -= (do_hdr_size - 14);
if ((ptr[0] & 240) != 0x60) return;
}
if (ptr[nxt] == NXT_FRAG) {
offset += 8;
nxt = 40;
}
if (udp == 0 && ptr[nxt] == NXT_TCP && memcmp(dst, ptr + 8, 16) == 0 &&
len >= 60 + offset) {
rsport = ptr[40 + offset] * 256 + ptr[41 + offset];
rdport = ptr[42 + offset] * 256 + ptr[43 + offset];
// printf("rsport: %d, rdport: %d, sport %d, port %d, count %d\n", rsport,
// rdport, sport, port, count);
if ((is_srcport == 1 || rdport == sport + count) && rsport == port) {
if (do_hop) printf("[%d] ", ptr[7]);
printf("TCP");
if ((ptr[53 + offset] & 1) > 0) printf("-FIN");
if ((ptr[53 + offset] & 2) > 0) printf("-SYN");
if ((ptr[53 + offset] & 4) > 0) printf("-RST");
if ((ptr[53 + offset] & 16) > 0) printf("-ACK");
printf(" received\n");
matched = 1;
} // else printf("DEBUG: different tcp pkt seen from target (is_srcport %d,
// rdport %d == sport %d + count %d, rsport %d == port %d)\n",
// is_srcport, rdport, sport, count, rsport, port);
}
if (udp == 1 && ptr[nxt] == NXT_UDP && memcmp(dst, ptr + 8, 16) == 0 &&
len >= 48 + offset) {
rsport = ptr[40 + offset] * 256 + ptr[41 + offset];
rdport = ptr[42 + offset] * 256 + ptr[43 + offset];
if ((is_srcport == 1 || rdport == sport + count) && rsport == port) {
if (do_hop) printf("[%d] ", ptr[7]);
printf("UDP received\n");
}
}
if (ptr[nxt] == NXT_ICMP6 &&
(ptr[40 + offset] == ICMP6_UNREACH ||
ptr[40 + offset] == ICMP6_PARAMPROB) &&
len >= 96 + poffset + offset) {
if (memcmp(dst, ptr + 72 + offset, 16) != 0) return;
if (ptype >= 0) {
if (ptype == NXT_FRAG && poffset == 0) {
if (ptr[54 + offset] != NXT_FRAG && ptr[54 + offset] != NXT_DST) return;
} else {
if (ptr[54 + offset] != ptype) return;
if (udp == 0 && ptr[54 + poffset2 + offset] != NXT_TCP) return;
if (udp == 1 && ptr[54 + poffset2 + offset] != NXT_UDP) return;
}
} else {
if (udp == 0 && ptr[54 + offset] != NXT_TCP) return;
if (udp == 1 && ptr[54 + offset] != NXT_UDP) return;
}
rsport = ptr[88 + poffset + offset] * 256 + ptr[89 + poffset + offset];
rdport = ptr[90 + poffset + offset] * 256 + ptr[91 + poffset + offset];
if ((ptype == NXT_FRAG && poffset == 0) ||
((rsport == sport + count || is_srcport == 1) && rdport == port)) {
matched = 1;
if (do_hop) printf("[%d] ", ptr[7]);
printf("ICMPv6 ");
if (ptr[40 + offset] == ICMP6_PARAMPROB) {
printf("Parameter Problem received\n");
return;
}
switch (ptr[41 + offset]) {
case 0:
printf("Route");
break;
case 1:
printf("Firewall");
break;
case 2:
printf("Out-Of-Scope");
break;
case 3:
printf("Address");
break;
case 4:
printf("Port");
break;
case 5:
printf("Ingress/Egress");
break;
case 6:
printf("Reject");
break;
default:
printf("unknown");
}
printf(" unreachable received\n");
}
} else if (ptr[nxt] == NXT_ICMP6 && ptr[40 + offset] == ICMP6_ECHOREPLY &&
pingtest) {
matched = 1;
if (do_hop) printf("[%d] ", ptr[7]);
printf("ICMPv6 Echo Reply\n");
}
}
void check_for_reply() {
int ret = -1;
time_t t;
t = time(NULL);
matched = 0;
while (ret < 0) {
usleep(10);
thc_pcap_check(p, (char *)check_packet, NULL);
if (matched == -1) {
ret = -1;
matched = 0;
} else if (matched == 1)
ret = 0;
if (time(NULL) > t + 3 && ret < 0) ret = 0;
}
if (matched == 0)
printf("FAILED - no reply\n");
else if (only == 0)
sleep(1);
}
int main(int argc, char *argv[]) {
int i, curr = 0;
unsigned char buf[3000], ch;
unsigned char *src, string[64] = "ip6 and not src ";
unsigned char *srcmac = NULL, *dstmac = NULL;
thc_ipv6_hdr * hdr, *hdr3;
int offset = 14;
unsigned char *pkt = NULL, *pkt2 = NULL, *pkt3 = NULL;
int pkt_len = 0, pkt_len2 = 0, pkt_len3 = 0;
char * interface;
if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]);
while ((i = getopt(argc, argv, "uH")) >= 0) {
switch (i) {
case 'u':
udp = 1;
break;
case 'H':
do_hop = 1;
break;
default:
fprintf(stderr, "Error: invalid option -%c\n", i);
exit(-1);
}
}
if (argc - optind < 3) help(argv[0]);
if (do_hdr_size) offset = do_hdr_size;
interface = argv[optind];
dst = thc_resolve6(argv[optind + 1]);
port = atoi(argv[optind + 2]);
if (argc - optind > 3 && argv[optind + 3] != NULL)
only = atoi(argv[optind + 3]);
if ((src = thc_get_own_ipv6(interface, dst, PREFER_GLOBAL)) == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
srcmac = thc_get_own_mac(interface);
if ((dstmac = thc_get_mac(interface, src, dst)) == NULL) {
fprintf(stderr, "ERROR: Can not resolve mac address for %s\n", argv[2]);
exit(-1);
}
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
strcat(string, thc_ipv62notation(src));
memset(buf, 0, sizeof(buf));
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 firewall6: mode %s against %s port %d\n",
udp == 0 ? "TCP" : "UDP", argv[optind + 1], port);
printf("Run a sniffer behind the firewall to see what passes through\n\n");
curr = 0;
/* ----------------- BEGIN OF TEST CASES ---------------- */
if (only == ++count || only == 0) {
printf("Test %2d: plain sending\t\t\t", count);
poffset = 0;
ptype = -1;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: plain sending with data\t", count);
poffset = 0;
ptype = -1;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, buf, 1000) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, buf, 1000) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: IPv4 ethernet type\t\t", count);
poffset = 0;
ptype = -1;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
if (do_hdr_size) {
if (do_pppoe) {
hdr->pkt[20 + do_hdr_off] = 0; // PPP protocol value for IPv4
hdr->pkt[21 + do_hdr_off] = 0x21;
} else if (do_hdr_vlan && do_6in4 == 0) {
hdr->pkt[16] = 8; // ethernet protocol value for IPv4
hdr->pkt[17] = 0;
}
} else {
hdr->pkt[12] = 8; // ethernet protocol value for IPv4
hdr->pkt[13] = 0;
}
if (do_6in4 == 0) {
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
} else
printf("skipped (6in4)\n");
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: sending IPv5 packet\t\t", count);
poffset = 0;
ptype = -1;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 5)) == NULL)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: hop-by-hop hdr (ignore option)\t", count);
poffset = 8;
ptype = NXT_HBH;
poffset2 = 34;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, 6);
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf, 6) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: dst hdr (ignore option)\t", count);
poffset = 8;
ptype = NXT_DST;
poffset2 = 34;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, 6);
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: hop-by-hop hdr router alert\t", count);
poffset = 8;
ptype = NXT_HBH;
poffset2 = 34;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, 6);
buf[0] = 5;
buf[1] = 2;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, buf, 6) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 3x dst hdr (ignore option)\t", count);
poffset = 3 * 8;
ptype = NXT_DST;
poffset2 = 34 + 2 * 8;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, 6);
for (i = 0; i < 3; i++)
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 130x dst hdr (ignore option)\t", count);
poffset = 130 * 8;
ptype = NXT_DST;
poffset2 = 34 + 129 * 8;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, 6);
for (i = 0; i < 130; i++)
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: atomic fragment\t\t", count);
poffset = 8;
ptype = NXT_FRAG;
poffset2 = 34;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 2x atomic fragment (same id)\t", count);
poffset = 2 * 8;
ptype = NXT_FRAG;
poffset2 = 34 + 1 * 8;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 2; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 2x atomic fragment (diff id)\t", count);
poffset = 2 * 8;
ptype = NXT_FRAG;
poffset2 = 34 + 1 * 8;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 2; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count * 512 + i) ==
-1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 3x atomic fragment (same id)\t", count);
poffset = 3 * 8;
ptype = NXT_FRAG;
poffset2 = 34 + 2 * 8;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 3; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 3x atomic fragment (diff id)\t", count);
poffset = 3 * 8;
ptype = NXT_FRAG;
poffset2 = 34 + 2 * 8;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 3; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count * 512 + i) ==
-1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 130x atomic fragment (same id)\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 130; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 130x atomic fragment (diff id)\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 130; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count * 512 + i) ==
-1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
while (thc_send_pkt(interface, pkt, &pkt_len) == -1)
usleep(1);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 260x atomic fragment (same id)\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 260; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
thc_send_as_fragment6(interface, src, dst, NXT_FRAG, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
thc_send_as_fragment6(interface, src, dst, NXT_FRAG, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 260x atomic fragment (diff id)\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
for (i = 0; i < 260; i++)
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count * 512 + i) ==
-1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
thc_send_as_fragment6(interface, src, dst, NXT_FRAG, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
thc_send_as_fragment6(interface, src, dst, NXT_FRAG, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 2kb dst hdr\t\t\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, sizeof(buf));
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 2040 - 2) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 2kb dst + dst hdr\t\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, sizeof(buf));
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 2040 - 2) == -1) return -1;
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 32x 2kb dst hdr\t\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, sizeof(buf));
for (i = 0; i < 32; i++)
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 2040 - 2) == -1) return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 2x dst hdr + 2x frag\t\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, sizeof(buf));
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 2040 - 2) == -1) return -1;
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) == -1) return -1;
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: 4x dst hdr + 3x frag\t\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)
return -1;
memset(buf, 0, sizeof(buf));
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 2040 - 2) == -1) return -1;
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) == -1) return -1;
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 2040 - 2) == -1) return -1;
if (thc_add_hdr_dst(pkt, &pkt_len, buf, 6) == -1) return -1;
if (thc_add_hdr_fragment(pkt, &pkt_len, 0, 0, sport + count) == -1)
return -1;
if (udp == 0) {
if (thc_add_tcp(pkt, &pkt_len, sport + count, port, sport + count, 0,
TCP_SYN, 0x3840, 0, NULL, 0, NULL, 0) == -1)
return -1;
} else {
if (thc_add_udp(pkt, &pkt_len, sport + count, port, 0, NULL, 0) == -1)
return -1;
}
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) == -1)
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
hdr = (thc_ipv6_hdr *)pkt;
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
thc_send_as_fragment6(interface, src, dst, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset, 1240);
check_for_reply();
pkt = thc_destroy_packet(pkt);
curr++;
}
if (only == ++count || only == 0) {
printf("Test %2d: frag type first+middle\t\t", count);
poffset = 0;
ptype = NXT_FRAG;
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len, src,
dst, 64, 0, count, 0, 0)) == NULL)