/
implementation6.c
2231 lines (2113 loc) · 82.5 KB
/
implementation6.c
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/*
* Tests various IPv6 specific options for their implementations
* This can also be used to test firewalls, check what it passes.
* A sniffer on the other side of the firewall or running implementation6d
* shows you what got through.
*
*/
#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"
int ret_code = 1, matched = 0, gtype1, gtype1a, gtype2, gtype2a, gpos, epos,
onecase = 0;
unsigned char *gpattern, *gsrc, *gdst, etype, ecode;
void help(char *prg) {
printf("%s %s (c) 2022 by %s %s\n\n", prg, VERSION, AUTHOR, RESOURCE);
printf(
"Syntax: %s [-p] [-s sourceip6] interface destination "
"[test-case-number]\n\n",
prg);
printf("Options:\n");
printf(" -s sourceip6 use the specified source IPv6 address\n");
printf(
" -p do not perform an alive check at the beginning and "
"end\n");
printf(
"\nPerforms some IPv6 implementation checks, can be used to test "
"some\nfirewall features too. Takes approx. 2 minutes to complete.\n");
exit(-1);
}
void ignoreit(u_char *foo, const struct pcap_pkthdr *header,
const unsigned char *data) {
return;
}
void check_packet_n(u_char *foo, const struct pcap_pkthdr *header,
const unsigned char *data) {
unsigned char *ipv6hdr = (unsigned char *)data, len = header->caplen;
int off = 0;
ipv6hdr = (unsigned char *)(data + 14);
len -= 14;
if (do_hdr_size) {
ipv6hdr = (unsigned char *)(data + do_hdr_size);
len -= (do_hdr_size - 14);
if ((ipv6hdr[0] & 240) != 0x60) return;
}
if (debug) {
printf("DEBUG: packet received\n");
thc_dump_data(ipv6hdr, len, "Received Packet");
}
if (ipv6hdr[6] == NXT_FRAG) off = 8;
if (86 + off < len) {
if (debug) printf("\nDEBUG: packet too short\n");
return;
}
if (ipv6hdr[6] == NXT_ICMP6 &&
(ipv6hdr[40] == ICMP6_NEIGHBORSOL || ipv6hdr[40] == ICMP6_TTLEXEED))
return;
if (off == 8 &&
(ipv6hdr[40] == NXT_ICMP6 && (ipv6hdr[40 + off] == ICMP6_NEIGHBORSOL ||
ipv6hdr[40 + off] == ICMP6_TTLEXEED)))
return;
if ((ipv6hdr[6] == NXT_ICMP6 && ipv6hdr[40] == ICMP6_NEIGHBORADV) ||
(off == 8 && ipv6hdr[40] == NXT_ICMP6 &&
ipv6hdr[40 + off] == ICMP6_NEIGHBORADV)) {
if (memcmp(ipv6hdr + 8, gdst, 16) == 0 &&
memcmp(ipv6hdr + 24, gsrc, 16) == 0) {
matched = 2;
return;
}
} else if ((ipv6hdr[6] == NXT_ICMP6 && ipv6hdr[40] == ICMP6_PARAMPROB) ||
(off == 8 && ipv6hdr[40] == NXT_ICMP6 &&
ipv6hdr[40 + off] == ICMP6_PARAMPROB)) {
if (memcmp(ipv6hdr + 8, gsrc, 16) == 0 &&
memcmp(ipv6hdr + 24, gdst, 16) == 0) {
matched = 1;
etype = ipv6hdr[40];
ecode = ipv6hdr[41];
return;
}
}
return;
}
int check_for_reply_n(pcap_t *p, unsigned char *src, unsigned char *dst) {
int ret = -1;
time_t t;
t = time(NULL);
matched = 0;
gsrc = src, gdst = dst;
while (ret < 0) {
(void)thc_pcap_check(p, (char *)check_packet_n, NULL);
if (matched > 0) ret = 0;
if (time(NULL) > t + 2 && ret < 0) ret = 0;
}
if (matched <= 0) printf("FAILED - no reply\n");
if (matched == 1) {
printf("FAILED - error reply [%d:%d]\n", etype, ecode);
if (onecase == 0) sleep(2);
}
if (matched == 2) {
printf("PASSED - we got a reply\n");
ret_code = 0;
}
usleep(500);
return matched;
}
void check_packet(u_char *foo, const struct pcap_pkthdr *header,
const unsigned char *data) {
unsigned char *ipv6hdr = (unsigned char *)(data + 14);
int len = header->caplen - 14, off = 0;
if (do_hdr_size) {
ipv6hdr = (unsigned char *)(data + do_hdr_size);
len -= (do_hdr_size - 14);
if ((ipv6hdr[0] & 240) != 0x60) return;
}
matched = 0;
if (debug) {
printf("DEBUG: packet received\n");
thc_dump_data(ipv6hdr, len, "Received Packet");
}
if (ipv6hdr[6] == NXT_FRAG) off = 8;
if (gpos + off > len && (epos == 0 || epos + off > len)) {
matched = -1;
if (debug) printf("\nDEBUG: packet too short (2)\n");
return;
}
if ((ipv6hdr[6] == NXT_ICMP6 || (off == 8 && ipv6hdr[40] == NXT_ICMP6)) &&
(ipv6hdr[40 + off] == ICMP6_NEIGHBORSOL ||
ipv6hdr[40] == ICMP6_NEIGHBORADV ||
ipv6hdr[40 + off] == ICMP6_TTLEXEED) &&
ipv6hdr[40 + off] != gtype2 && ipv6hdr[40 + off] != gtype2a) {
matched = -1;
return;
}
// printf("gpos: %d, pattern %x, found %x\n", gpos, gpattern[0],
// ipv6hdr[gpos]); printf("epos: %d, pattern %x, found %x\n", epos,
// gpattern[0], ipv6hdr[epos]);
if (gpos > 0 && memcmp(ipv6hdr + gpos + off, gpattern, 4) != 0) {
matched = -1;
if (debug) printf("\nDEBUG: packet contents different\n");
if (epos == 0) return;
} else {
matched = 1;
etype = ipv6hdr[40];
ecode = ipv6hdr[41];
}
if (epos > 0 && epos < len &&
memcmp(ipv6hdr + epos + off, gpattern, 4) == 0) {
matched = 1;
etype = ipv6hdr[40];
ecode = ipv6hdr[41];
}
if ((ipv6hdr[6] == gtype1 || gtype1 == 0) &&
(ipv6hdr[40] == gtype2 || gtype2 == 0) &&
(gpos <= 0 || (gpos < len && memcmp(ipv6hdr + gpos, gpattern, 4) == 0)))
matched = 2;
if (off == 8 && ((ipv6hdr[40] == gtype1 || gtype1 == 0) &&
(ipv6hdr[40 + off] == gtype2 || gtype2 == 0) &&
(gpos <= 0 || (gpos < len && memcmp(ipv6hdr + gpos + off,
gpattern, 4) == 0))))
matched = 2;
if ((ipv6hdr[6] == gtype1a || gtype1a == 0) &&
(ipv6hdr[40] == gtype2a || gtype2a == 0) &&
(gpos <= 0 ||
(gpos + off < len && memcmp(ipv6hdr + gpos, gpattern, 4) == 0)))
matched = 2;
if (off == 8 &&
((ipv6hdr[40] == gtype1a || gtype1a == 0) &&
(ipv6hdr[40 + off] == gtype2a || gtype2a == 0) &&
(gpos <= 0 ||
(gpos + off < len && memcmp(ipv6hdr + gpos + off, gpattern, 4) == 0))))
matched = 2;
if (debug)
printf(
"\nDEBUG: hdr[6] %d|%d == %d, hdr[40] %d|%d == %d, pos[%d/%d] "
"%02x%02x%02x%02x == %02x%02x%02x%02x\n",
ipv6hdr[6], gtype1, gtype1a, ipv6hdr[40], gtype2, gtype2a, gpos, epos,
gpos == 0 ? 0 : ipv6hdr[gpos], gpos == 0 ? 0 : ipv6hdr[gpos + 1],
gpos == 0 ? 0 : ipv6hdr[gpos + 2], gpos == 0 ? 0 : ipv6hdr[gpos + 3],
gpos == 0 ? 0 : gpattern[0], gpos == 0 ? 0 : gpattern[1],
gpos == 0 ? 0 : gpattern[2], gpos == 0 ? 0 : gpattern[3]);
return;
}
int check_for_reply(pcap_t *p, int type1, int type2, int type1a, int type2a,
int pos, int pos2, unsigned char *pattern) {
int ret = -1;
time_t t;
t = time(NULL);
matched = 0;
gtype1 = type1;
gtype1a = type1a, gtype2 = type2;
gtype2a = type2a, gpos = pos;
epos = pos2;
gpattern = pattern;
while (ret < 0) {
if (thc_pcap_check(p, (char *)check_packet, NULL) > 0) ret = 1;
if (matched == -1) {
ret = -1;
matched = 0;
}
if (time(NULL) > t + 2 && ret < 0) ret = 0;
}
if (matched == 0) printf("FAILED - no reply\n");
if (matched == 1) {
printf("FAILED - error reply [%d:%d]\n", etype, ecode);
if (onecase == 0) sleep(2);
}
if (matched == 2) {
printf("PASSED - we got a reply\n");
ret_code = 0;
}
usleep(500);
return matched;
}
int check_alive(pcap_t *p, char *interface, unsigned char *src,
unsigned char *dst) {
int ret = -2;
time_t t;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
thc_ping6(interface, src, dst, 16, 1);
t = time(NULL);
while (ret < 0) {
if (thc_pcap_check(p, (char *)ignoreit, NULL) > 0) ret = 1;
if (time(NULL) > t + 1 && ret == -2) {
thc_ping6(interface, src, dst, 16, 1);
ret = -1;
}
if (time(NULL) > t + 2 && ret < 0) ret = 0;
}
return ret > 0 ? 1 : 0;
}
int main(int argc, char *argv[]) {
int test = 0, count = 1;
unsigned char buf[1500], bla[1500], bigbla[65536], tests[256],
string[64] = "ip6 and dst ", string2[64] = "ip6 and src ";
unsigned char *dst6, *ldst6 = malloc(16), *src6 = NULL, *lsrc6, *mcast6;
unsigned char *srcmac = NULL, *dstmac = NULL, *routers[2], null_buffer[6];
thc_ipv6_hdr * hdr;
int i, j, k, srcmtu, fragsize, use_srcroute_type = -1, offset = 14;
pcap_t * p;
unsigned char *pkt = NULL, *pkt2 = NULL, *pkt3 = NULL;
int pkt_len = 0, pkt_len2 = 0, pkt_len3 = 0, noping = 0;
char * interface;
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
if (argc < 3 || strncmp(argv[1], "-h", 2) == 0) help(argv[0]);
while ((i = getopt(argc, argv, "pds:")) >= 0) {
switch (i) {
case 'p':
noping = 1;
break;
case 'd':
debug = 1;
break;
case 's':
src6 = thc_resolve6(optarg);
break;
default:
fprintf(stderr, "Error: unknown option %c\n", i);
exit(-1);
}
}
interface = argv[optind];
dst6 = thc_resolve6(argv[optind + 1]);
if (dst6 == NULL) {
fprintf(stderr, "Error: can not resolve %s to a valid IPv6 address\n",
argv[optind + 1]);
exit(-1);
}
memcpy(ldst6, dst6, 16);
memset(ldst6 + 2, 0, 6);
ldst6[0] = 0xfe;
ldst6[1] = 0x80;
mcast6 = thc_resolve6("ff02::1");
if (argc >= optind + 3) {
test = atoi(argv[optind + 2]);
onecase = 1;
}
memset(buf, 0, sizeof(buf));
memset(null_buffer, 0, sizeof(null_buffer));
if (do_hdr_size) offset = do_hdr_size;
if (src6 == NULL) src6 = thc_get_own_ipv6(interface, dst6, PREFER_GLOBAL);
if (src6 != NULL && src6[0] == 0xfe)
lsrc6 = src6;
else
lsrc6 = thc_get_own_ipv6(interface, ldst6, PREFER_LINK);
if (lsrc6 == NULL) {
fprintf(stderr, "Error: invalid interface %s\n", interface);
exit(-1);
}
strcat(string, thc_ipv62notation(src6));
strcat(string2, thc_ipv62notation(dst6));
srcmac = thc_get_own_mac(interface);
if ((dstmac = thc_get_mac(interface, src6, dst6)) == NULL) {
fprintf(stderr, "ERROR: Can not resolve mac address for %s\n", argv[2]);
exit(-1);
}
if ((srcmtu = thc_get_mtu(interface)) <= 0) {
fprintf(stderr, "ERROR: can not get mtu from interface %s\n", interface);
exit(-1);
}
fragsize = ((srcmtu - 62) / 8) * 8;
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);
}
setvbuf(stdout, NULL, _IONBF, 0);
memset(tests, 0, sizeof(tests));
printf("Performing implementation checks on %s via %s:\n", argv[optind + 1],
argv[optind]);
if (noping == 0) {
if (check_alive(p, interface, src6, dst6) == 0) {
fprintf(stderr, "Error: target %s is not alive via direct ping6!\n",
argv[optind + 1]);
exit(-1);
} else
printf("Test 0: normal ping6\t\t\t\tPASSED - we got a reply\n");
}
/********************** TEST CASES ************************/
if (test == 0 || test == count) {
printf("Test %2d: hop-by-hop ignore option\t\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 100, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: hop-by-hop ignore option 2kb size\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bigbla, 0, sizeof(bigbla));
bigbla[0] = NXT_IGNORE;
bigbla[1] = 0;
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, (unsigned char *)&bigbla, 2046) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
hdr = (thc_ipv6_hdr *)pkt;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_send_as_fragment6(
interface, src6, dst6, NXT_HBH, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset,
hdr->pkt_len > fragsize
? fragsize
: (((hdr->pkt_len - 40 - 14) / 16) + 1) * 8) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 100, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: 2 hop-by-hop headers\t\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
for (i = 0; i < 2; i++)
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 130, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: 128 hop-by-hop headers\t\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
for (i = 0; i < 128; i++)
if (thc_add_hdr_hopbyhop(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 130, 1200, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: destination ignore option\t\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0) return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 100, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: destination ignore option 2kb size\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bigbla, 0, sizeof(bigbla));
bigbla[0] = NXT_IGNORE;
bigbla[1] = 0;
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&bigbla, 2046) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
hdr = (thc_ipv6_hdr *)pkt;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_send_as_fragment6(
interface, src6, dst6, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset,
hdr->pkt_len > fragsize
? fragsize
: (((hdr->pkt_len - 40 - 14) / 16) + 1) * 8) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 100, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: 2 destination headers\t\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
for (i = 0; i < 2; i++)
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 130, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: 128 destination headers\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
for (i = 0; i < 128; i++)
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 130, 1200, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: 2000 destination headers\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
for (i = 0; i < 2000; i++)
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
hdr = (thc_ipv6_hdr *)pkt;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_send_as_fragment6(
interface, src6, dst6, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset,
hdr->pkt_len > fragsize
? fragsize
: (((hdr->pkt_len - 40 - 14) / 16) + 1) * 8) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 130, 1200, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: 8172 destination headers\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
for (i = 0; i < 8172; i++)
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
hdr = (thc_ipv6_hdr *)pkt;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_send_as_fragment6(
interface, src6, dst6, NXT_DST, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset,
hdr->pkt_len > fragsize
? fragsize
: (((hdr->pkt_len - 40 - 14) / 16) + 1) * 8) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, 130, 1200, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: correct fragmentation\t\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, sizeof(bla), 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
hdr = (thc_ipv6_hdr *)pkt;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_send_as_fragment6(
interface, src6, dst6, NXT_ICMP6, hdr->pkt + 40 + offset,
hdr->pkt_len - 40 - offset,
hdr->pkt_len > fragsize
? fragsize
: (((hdr->pkt_len - 40 - 14) / 16) + 1) * 8) < 0)
return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_FRAG, NXT_ICMP6, NXT_FRAG, NXT_ICMP6,
fragsize - 100, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: one-shot fragmentation\t\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_oneshotfragment(pkt, &pkt_len, getpid() + 70000) < 0)
return -1;
memset(bla, count % 256, sizeof(bla));
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, fragsize - 100, 0);
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
// hdr = (thc_ipv6_hdr *) pkt;
// while (thc_pcap_check(p, (char *) ignoreit, NULL) > 0);
// if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6,
// hdr->pkt + 40 + offset, hdr->pkt_len - 40 -
// offset, hdr->pkt_len > fragsize ? fragsize :
// (((hdr->pkt_len - 40 - 14) / 16) + 1) * 8) <
// 0)
// return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, fragsize - 200, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: too large fragmentation EH\t\t", count);
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(bla, count % 256, sizeof(bla));
bla[0] = 0;
bla[1] = 0;
bla[6] = 0x80; // this is for wireshark this error EH not correctly
if (thc_add_hdr_misc(pkt, &pkt_len, NXT_FRAG, -1, bla, 8 + 8 + 8 + 6) < 0)
return -1;
memset(bla, count % 256, sizeof(bla));
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, fragsize - 100, 0);
if (thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
// hdr = (thc_ipv6_hdr *) pkt;
// while (thc_pcap_check(p, (char *) ignoreit, NULL) > 0);
// if (thc_send_as_fragment6(interface, src6, dst6, NXT_ICMP6,
// hdr->pkt + 40 + offset, hdr->pkt_len - 40 -
// offset, hdr->pkt_len > fragsize ? fragsize :
// (((hdr->pkt_len - 40 - 14) / 16) + 1) * 8) <
// 0)
// return -1;
pkt = thc_destroy_packet(pkt);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, fragsize - 200, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: overlap-first-zero fragmentation\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0) return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
if ((pkt2 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len2,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_dst(pkt2, &pkt_len2, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt2, &pkt_len2, ICMP6_PINGREPLY, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt2, &pkt_len2) < 0)
return -1;
/* frag stuff */
hdr = (thc_ipv6_hdr *)pkt;
i = ((hdr->pkt_len - 40 - offset - 10) / 8) * 8;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
if (thc_add_data6(pkt3, &pkt_len3, NXT_HDR, buf,
hdr->pkt_len - 40 - offset - 22))
return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 0, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
if (thc_add_data6(pkt3, &pkt_len3, NXT_HDR, buf,
hdr->pkt_len - 40 - offset - 22))
return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
/* lets see if it worked */
pkt = thc_destroy_packet(pkt);
pkt2 = thc_destroy_packet(pkt2);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, fragsize - 200, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: overlap-last-zero fragmentation\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0) return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
if ((pkt2 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len2,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_dst(pkt2, &pkt_len2, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt2, &pkt_len2, ICMP6_PINGREPLY, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt2, &pkt_len2) < 0)
return -1;
/* frag stuff */
hdr = (thc_ipv6_hdr *)pkt2;
i = ((hdr->pkt_len - 40 - offset - 10) / 8) * 8;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
if (thc_add_data6(pkt3, &pkt_len3, NXT_HDR, buf,
hdr->pkt_len - 40 - offset - 22))
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 0, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
if (thc_add_data6(pkt3, &pkt_len3, NXT_HDR, buf,
hdr->pkt_len - 40 - offset - 22))
return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
/* lets see if it worked */
pkt = thc_destroy_packet(pkt);
pkt2 = thc_destroy_packet(pkt2);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, fragsize - 200, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: overlap-first-dst fragmentation\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0) return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
if ((pkt2 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len2,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_dst(pkt2, &pkt_len2, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt2, &pkt_len2, ICMP6_PINGREPLY, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt2, &pkt_len2) < 0)
return -1;
/* frag stuff */
hdr = (thc_ipv6_hdr *)pkt;
i = ((hdr->pkt_len - 40 - offset - 10) / 8) * 8;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
if (thc_add_data6(pkt3, &pkt_len3, NXT_DST, buf,
hdr->pkt_len - 40 - offset - 22))
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt2;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 1, 0, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
if (thc_add_data6(pkt3, &pkt_len3, NXT_DST, buf + 8,
hdr->pkt_len - 40 - offset - 22))
return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
/* lets see if it worked */
pkt = thc_destroy_packet(pkt);
pkt2 = thc_destroy_packet(pkt2);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, fragsize - 200, 0, bla))
tests[count] = 1;
}
count++;
if (test == 0 || test == count) {
printf("Test %2d: overlap-last-dst fragmentation\t\t", count);
memset(bla, count % 256, sizeof(bla));
if ((pkt = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
memset(buf, 0, sizeof(buf));
buf[0] = NXT_IGNORE;
buf[1] = 0;
if (thc_add_hdr_dst(pkt, &pkt_len, (unsigned char *)&buf, 6) < 0) return -1;
thc_add_icmp6(pkt, &pkt_len, ICMP6_PINGREQUEST, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt, &pkt_len) < 0)
return -1;
if ((pkt2 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len2,
src6, dst6, 255, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_dst(pkt2, &pkt_len2, (unsigned char *)&buf, 6) < 0)
return -1;
thc_add_icmp6(pkt2, &pkt_len2, ICMP6_PINGREPLY, 0, count,
(unsigned char *)&bla, srcmtu - 150, 0);
if (thc_generate_pkt(interface, srcmac, dstmac, pkt2, &pkt_len2) < 0)
return -1;
/* frag stuff */
hdr = (thc_ipv6_hdr *)pkt2;
i = ((hdr->pkt_len - 40 - offset - 10) / 8) * 8;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 0, 1, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
if (thc_add_data6(pkt3, &pkt_len3, NXT_DST, buf,
hdr->pkt_len - 40 - offset - 22))
return -1;
while (thc_pcap_check(p, (char *)ignoreit, NULL) > 0)
;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
hdr = (thc_ipv6_hdr *)pkt;
if ((pkt3 = thc_create_ipv6_extended(interface, PREFER_GLOBAL, &pkt_len3,
src6, dst6, 0, 0, count, 0, 0)) ==
NULL)
return -1;
if (thc_add_hdr_fragment(pkt3, &pkt_len3, 1, 0, count)) return -1;
memcpy(buf, hdr->pkt + 40 + offset, hdr->pkt_len - 40 - offset);
if (thc_add_data6(pkt3, &pkt_len3, NXT_DST, buf + 8,
hdr->pkt_len - 40 - offset - 22))
return -1;
thc_generate_and_send_pkt(interface, srcmac, dstmac, pkt3,
&pkt_len3); // ignore
pkt3 = thc_destroy_packet(pkt3);
/* lets see if it worked */
pkt = thc_destroy_packet(pkt);
pkt2 = thc_destroy_packet(pkt2);
if (check_for_reply(p, NXT_ICMP6, ICMP6_PINGREPLY, NXT_ICMP6,
ICMP6_PINGREPLY, fragsize - 200, 0, bla))
tests[count] = 1;
}
count++;