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GoodbyeDPI
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Update goodbyedpi.c

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SashaXser 2023-09-10 14:43:52 +04:00 committed by GitHub
parent c517b7342e
commit f6c1c69543
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1 changed files with 9 additions and 13 deletions
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22
src/goodbyedpi.c
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@ -177,21 +177,17 @@ static struct option long_options[] = {
static char *filter_string = NULL; static char *filter_string = NULL;
static char *filter_passive_string = NULL; static char *filter_passive_string = NULL;
static void add_maxpayloadsize_str(unsigned short maxpayload) { static void add_filter_str(int proto, int port) {
const char *maxpayloadsize_str = "and (tcp.PayloadLength ? tcp.PayloadLength < %hu or tcp.Payload32[0] == 0x47455420 or tcp.Payload32[0] == 0x504F5354 : true)"; const char *udp = " or (udp and !impostor and !loopback and (udp.SrcPort == %d or udp.DstPort == %d))";
char *addfilter = malloc(strlen(maxpayloadsize_str) + 16); const char *tcp = " or (tcp and !impostor and !loopback " MAXPAYLOADSIZE_TEMPLATE " and (tcp.SrcPort == %d or tcp.DstPort == %d))";
sprintf(addfilter, maxpayloadsize_str, maxpayload); size_t new_filter_size = strlen(filter_string) + (proto == IPPROTO_UDP ? strlen(udp) : strlen(tcp)) + 16;
char *new_filter = malloc(new_filter_size);
sprintf(new_filter, proto == IPPROTO_UDP ? udp : tcp, port, port);
char *newstr = repl_str(filter_string, MAXPAYLOADSIZE_TEMPLATE, addfilter);
free(filter_string); free(filter_string);
filter_string = newstr; filter_string = new_filter;
newstr = repl_str(filter_passive_string, MAXPAYLOADSIZE_TEMPLATE, addfilter);
free(filter_passive_string);
filter_passive_string = newstr;
free(addfilter); // Free the allocated memory
} }
static void add_ip_id_str(int id) { static void add_ip_id_str(int id) {
@ -1470,4 +1466,4 @@ int main(int argc, char *argv[]) {
break; break;
} }
} }
} }