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GoodbyeDPI
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SashaXser 2023-09-30 22:24:38 +04:00 committed by GitHub
parent 5e5d25d887
commit d7cc055037
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1 changed files with 15 additions and 23 deletions
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38
src/goodbyedpi.c
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@ -136,18 +136,18 @@ static int running_from_service = 0;
static int exiting = 0;
static HANDLE filters[MAX_FILTERS];
static int filter_num = 0;
static const char *http10_redirect_302 = "HTTP/1.0 302 ";
static const char *http11_redirect_302 = "HTTP/1.1 302 ";
static const char http10_redirect_302[] = "HTTP/1.0 302 ";
static const char http11_redirect_302[] = "HTTP/1.1 302 ";
static const char http_host_find[] = "\r\nHost: ";
static const char http_host_replace[] = "\r\nhoSt: ";
static const char http_useragent_find[] = "\r\nUser-Agent: ";
static const char location_http[] = "\r\nLocation: http://";
static const char connection_close[] = "\r\nConnection: close";
static const char *http_methods[] = {
"GET ",
"GET ",
"HEAD ",
"POST ",
"PUT ",
"PUT ",
"DELETE ",
"CONNECT ",
"OPTIONS ",
@ -156,7 +156,7 @@ static const char *http_methods[] = {
static struct option long_options[] = {
{"port", required_argument, 0, 'z' },
{"dns-addr", required_argument, 0, 'd' },
{"dns-port", required_argument, 0, 'g' },
{"dns-port", required_argument, 0, 'g' },
{"dnsv6-addr", required_argument, 0, '!' },
{"dnsv6-port", required_argument, 0, '@' },
{"dns-verb", no_argument, 0, 'v' },
@ -316,27 +316,19 @@ static void mix_case(char *pktdata, unsigned int pktlen) {
static int is_passivedpi_redirect(const char *pktdata, unsigned int pktlen) {
/* Check HTTP status code using hash table lookup */
if (http_status_code_hash(pktdata) == 302) {
/* Search for location header using Boyer-Moore */
if (boyer_moore_search(pktdata, pktlen, location_http, sizeof(location_http)-1)) {
/* Search for connection header using Boyer-Moore */
if (boyer_moore_search(pktdata, pktlen, connection_close, sizeof(connection_close)-1)) {
return TRUE;
}
/* First check if this is HTTP 302 redirect */
if (memcmp(pktdata, http11_redirect_302, sizeof(http11_redirect_302)-1) == 0 ||
memcmp(pktdata, http10_redirect_302, sizeof(http10_redirect_302)-1) == 0)
{
/* Then check if this is a redirect to new http site with Connection: close */
if (dumb_memmem(pktdata, pktlen, location_http, sizeof(location_http)-1) &&
dumb_memmem(pktdata, pktlen, connection_close, sizeof(connection_close)-1)) {
return TRUE;
}
}
}
return FALSE;
return FALSE;
}
static int find_header_and_get_info(const char *pktdata, unsigned int pktlen,
const char *hdrname,
char **hdrnameaddr,