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src/goodbyedpi.c

@@ -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 http10_redirect_302[] = "HTTP/1.0 302 ";
-static const char *http11_redirect_302 = "HTTP/1.1 302 ";
+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) {
-
+    /* First check if this is HTTP 302 redirect */
-  /* Check HTTP status code using hash table lookup */
+    if (memcmp(pktdata, http11_redirect_302, sizeof(http11_redirect_302)-1) == 0 ||
-  if (http_status_code_hash(pktdata) == 302) {
+        memcmp(pktdata, http10_redirect_302, sizeof(http10_redirect_302)-1) == 0)
-
+    {
-    /* Search for location header using Boyer-Moore */ 
+        /* Then check if this is a redirect to new http site with Connection: close */
-    if (boyer_moore_search(pktdata, pktlen, location_http, sizeof(location_http)-1)) {
+        if (dumb_memmem(pktdata, pktlen, location_http, sizeof(location_http)-1) &&
-
+            dumb_memmem(pktdata, pktlen, connection_close, sizeof(connection_close)-1)) {
-      /* Search for connection header using Boyer-Moore */
+            return TRUE;
-      if (boyer_moore_search(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,