Fix fake packet handling without other modifying parameters

Fixes #150

src/goodbyedpi.c

@@ -383,6 +383,7 @@ int main(int argc, char *argv[]) {
  do_host_mixedcase = 0,
  do_dnsv4_redirect = 0, do_dnsv6_redirect = 0,
  do_dns_verb = 0, do_blacklist = 0,
+ do_fake_packet = 0,
  do_wrong_chksum = 0;
  unsigned int http_fragment_size = 0;
  unsigned int https_fragment_size = 0;
@@ -584,9 +585,11 @@ int main(int argc, char *argv[]) {
  }
  break;
  case '$':
+ do_fake_packet = 1;
  ttl_of_fake_packet = atoub(optarg, "Set TTL parameter error!");
  break;
  case '%':
+ do_fake_packet = 1;
  do_wrong_chksum = 1;
  break;
  default:
@@ -761,12 +764,14 @@ int main(int argc, char *argv[]) {
  ((do_fragment_https ? packet_dataLen == https_fragment_size : 0) ||
  packet_dataLen > 16) &&
  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) {
- send_fake_https_request(w_filter, &addr, packet, packetLen, packet_v6,
- ttl_of_fake_packet, do_wrong_chksum);
+ if (do_fake_packet) {
+ send_fake_https_request(w_filter, &addr, packet, packetLen, packet_v6,
+ ttl_of_fake_packet, do_wrong_chksum);
+ }
  }
  }
  /* Handle OUTBOUND packet on port 80, search for Host header */
@@ -777,7 +782,8 @@ int main(int argc, char *argv[]) {
  (do_fragment_http ? http_fragment_size : 0u),
  &http_req_fragmented) &&
  (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 */
@@ -789,7 +795,7 @@ int main(int argc, char *argv[]) {
  host_addr = hdr_value_addr;
  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,
  ttl_of_fake_packet, do_wrong_chksum);