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Small fixes

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ValdikSS 2017-12-07 13:03:01 +03:00
parent c6c071e35f
commit 1e8835cfe5
1 changed files with 24 additions and 8 deletions
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18
goodbyedpi.c
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@ -64,7 +64,8 @@ static struct option long_options[] = {
{0, 0, 0, 0 }
};
static char *filter_string = "(ip and tcp and "
static char *filter_string = NULL;
static char *filter_string_template = "(ip and tcp and "
"(inbound and (("
"((ip.Id == 0x0001 or ip.Id == 0x0000) and tcp.SrcPort == 80 and tcp.Ack) or "
"((tcp.SrcPort == 80 or tcp.SrcPort == 443) and tcp.Ack and tcp.Syn)"
@ -251,6 +252,11 @@ int main(int argc, char *argv[]) {
char *hdr_name_addr = NULL, *hdr_value_addr = NULL;
int hdr_value_len;
if (filter_string == NULL) {
filter_string = malloc(strlen(filter_string_template) + 1);
strcpy(filter_string, filter_string_template);
}
printf("GoodbyeDPI: Passive DPI blocker and Active DPI circumvention utility\n");
if (argc == 1) {
@ -323,6 +329,7 @@ int main(int argc, char *argv[]) {
i = 0;
break;
case 'd':
if (!do_dns_redirect) {
do_dns_redirect = 1;
dns_addr = inet_addr(optarg);
if (!dns_addr) {
@ -330,14 +337,23 @@ int main(int argc, char *argv[]) {
exit(EXIT_FAILURE);
}
add_filter_str(IPPROTO_UDP, 53);
}
break;
case 'g':
if (!do_dns_redirect) {
printf("--dns-port should be used with --dns-addr!\n"
"Make sure you use --dns-addr and pass it before "
"--dns-port\n");
exit(EXIT_FAILURE);
}
dns_port = atoi(optarg);
if (dns_port <= 0 || dns_port > 65535) {
printf("DNS port parameter error!\n");
exit(EXIT_FAILURE);
}
if (dns_port != 53) {
add_filter_str(IPPROTO_UDP, dns_port);
}
dns_port = ntohs(dns_port);
break;
default: