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Fix fake packet handling without other modifying parameters

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Fixes #150
This commit is contained in:
ValdikSS 2021-12-24 21:30:15 +03:00
parent 505b8bf516
commit ad60d30caa
1 changed files with 11 additions and 5 deletions
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12
src/goodbyedpi.c
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@ -383,6 +383,7 @@ int main(int argc, char *argv[]) {
do_host_mixedcase = 0, do_host_mixedcase = 0,
do_dnsv4_redirect = 0, do_dnsv6_redirect = 0, do_dnsv4_redirect = 0, do_dnsv6_redirect = 0,
do_dns_verb = 0, do_blacklist = 0, do_dns_verb = 0, do_blacklist = 0,
do_fake_packet = 0,
do_wrong_chksum = 0; do_wrong_chksum = 0;
unsigned int http_fragment_size = 0; unsigned int http_fragment_size = 0;
unsigned int https_fragment_size = 0; unsigned int https_fragment_size = 0;
@ -584,9 +585,11 @@ int main(int argc, char *argv[]) {
} }
break; break;
case '$': case '$':
do_fake_packet = 1;
ttl_of_fake_packet = atoub(optarg, "Set TTL parameter error!"); ttl_of_fake_packet = atoub(optarg, "Set TTL parameter error!");
break; break;
case '%': case '%':
do_fake_packet = 1;
do_wrong_chksum = 1; do_wrong_chksum = 1;
break; break;
default: default:
@ -761,14 +764,16 @@ int main(int argc, char *argv[]) {
((do_fragment_https ? packet_dataLen == https_fragment_size : 0) || ((do_fragment_https ? packet_dataLen == https_fragment_size : 0) ||
packet_dataLen > 16) && packet_dataLen > 16) &&
ppTcpHdr->DstPort != htons(80) && ppTcpHdr->DstPort != htons(80) &&
(ttl_of_fake_packet || do_wrong_chksum) (do_fake_packet)
) )
{ {
if (packet_dataLen >=2 && memcmp(packet_data, "\x16\x03", 2) == 0) { if (packet_dataLen >=2 && memcmp(packet_data, "\x16\x03", 2) == 0) {
if (do_fake_packet) {
send_fake_https_request(w_filter, &addr, packet, packetLen, packet_v6, send_fake_https_request(w_filter, &addr, packet, packetLen, packet_v6,
ttl_of_fake_packet, do_wrong_chksum); ttl_of_fake_packet, do_wrong_chksum);
} }
} }
}
/* Handle OUTBOUND packet on port 80, search for Host header */ /* Handle OUTBOUND packet on port 80, search for Host header */
else if (addr.Direction == WINDIVERT_DIRECTION_OUTBOUND && else if (addr.Direction == WINDIVERT_DIRECTION_OUTBOUND &&
packet_dataLen > 16 && packet_dataLen > 16 &&
@ -777,7 +782,8 @@ int main(int argc, char *argv[]) {
(do_fragment_http ? http_fragment_size : 0u), (do_fragment_http ? http_fragment_size : 0u),
&http_req_fragmented) && &http_req_fragmented) &&
(do_host || do_host_removespace || (do_host || do_host_removespace ||
do_host_mixedcase || do_fragment_http_persistent)) do_host_mixedcase || do_fragment_http_persistent ||
do_fake_packet))
{ {
/* Find Host header */ /* Find Host header */
@ -789,7 +795,7 @@ int main(int argc, char *argv[]) {
host_addr = hdr_value_addr; host_addr = hdr_value_addr;
host_len = hdr_value_len; host_len = hdr_value_len;
if (ttl_of_fake_packet || do_wrong_chksum) if (do_fake_packet)
send_fake_http_request(w_filter, &addr, packet, packetLen, packet_v6, send_fake_http_request(w_filter, &addr, packet, packetLen, packet_v6,
ttl_of_fake_packet, do_wrong_chksum); ttl_of_fake_packet, do_wrong_chksum);