add -n option (route) for windows

src/edge.c

@@ -124,8 +124,8 @@ static void help() {
 #endif /* #ifndef WIN32 */
 #ifdef __linux__
 	 "[-T <tos>]"
-	 "[-n cidr:gateway] "
 #endif
+	 "[-n cidr:gateway] "
 	 "[-m <MAC address>] "
 	 "-l <supernode host:port>\n"
 	 "    "
@@ -182,8 +182,8 @@ static void help() {
   printf("-S                       | Do not connect P2P. Always use the supernode.\n");
 #ifdef __linux__
   printf("-T <tos>                 | TOS for packets (e.g. 0x48 for SSH like priority)\n");
-  printf("-n <cidr:gateway>        | Route an IPv4 network via the gw. Use 0.0.0.0/0 for the default gw. Can be set multiple times.\n");
 #endif
+  printf("-n <cidr:gateway>        | Route an IPv4 network via the gw. Use 0.0.0.0/0 for the default gw. Can be set multiple times.\n");
   printf("-v                       | Make more verbose. Repeat as required.\n");
   printf("-t <port>                | Management UDP Port (for multiple edges on a machine).\n");
 
@@ -443,6 +443,7 @@ static int setOption(int optkey, char *optargument, n2n_tuntap_priv_config_t *ec
 
       break;
     }
+#endif
 
   case 'n':
     {
@@ -480,7 +481,6 @@ static int setOption(int optkey, char *optargument, n2n_tuntap_priv_config_t *ec
 
       break;
     }
-#endif
 
   case 's': /* Subnet Mask */
     {
@@ -540,9 +540,9 @@ static int loadFromCLI(int argc, char *argv[], n2n_edge_conf_t *conf, n2n_tuntap
   u_char c;
 
   while ((c = getopt_long(argc, argv,
-			 "k:a:bc:Eu:g:m:M:s:d:l:p:fvhrt:i:SDL:z::A::H"
+                          "k:a:bc:Eu:g:m:M:s:d:l:p:fvhrt:i:SDL:z::A::Hn:"
 #ifdef __linux__
-			 "T:n:"
+                          "T:"
 #endif
                           ,
                           long_options, NULL)) != '?') {

src/edge_utils.c

@@ -2288,8 +2288,17 @@ static int routectl(int cmd, int flags, n2n_route_t *route, int if_idx) {
  * the TAP device is destroyed. */
 static int edge_init_routes(n2n_edge_t *eee, n2n_route_t *routes, uint16_t num_routes) {
 #ifdef __linux__
-  int i;
+    return  edge_init_routes_linux(eee, routes, num_routes);
+#endif
+
+#ifdef WIN32
+  return  edge_init_routes_win(eee, routes, num_routes);
+#endif
+}
 
+static int edge_init_routes_linux(n2n_edge_t *eee, n2n_route_t *routes, uint16_t num_routes) {
+#ifdef __linux__
+    int i;
     for (i = 0; i<num_routes; i++) {
         n2n_route_t *route = &routes[i];
 
@@ -2365,7 +2374,8 @@ static int edge_init_routes(n2n_edge_t *eee, n2n_route_t *routes, uint16_t num_r
 
             if (routectl(RTM_NEWROUTE, NLM_F_CREATE | NLM_F_EXCL, &custom_route, eee->device.if_idx) < 0)
                 return(-1);
-    } else {
+        }
+        else {
             /* ip route add net via n2n_gateway */
             if (routectl(RTM_NEWROUTE, NLM_F_CREATE | NLM_F_EXCL, route, eee->device.if_idx) < 0)
                 return(-1);
@@ -2376,6 +2386,41 @@ static int edge_init_routes(n2n_edge_t *eee, n2n_route_t *routes, uint16_t num_r
     return(0);
 }
 
+static int edge_init_routes_win(n2n_edge_t *eee, n2n_route_t *routes, uint16_t num_routes)
+{
+#ifdef WIN32
+    int i;
+    struct in_addr net_addr, gateway;
+    char c_net_addr[32];
+    char c_gateway[32];
+    char cmd[256];
+
+    for (i = 0; i < num_routes; i++)
+    {
+        n2n_route_t *route = &routes[i];
+        if ((route->net_addr == 0) && (route->net_bitlen == 0))
+        {
+            traceEvent(TRACE_NORMAL, "Warning: The 0.0.0.0/0 route settings are not supported on Windows");
+            return (-1);
+        }
+        else
+        {
+            /* ip route add net via n2n_gateway */
+            memcpy(&net_addr, &(route->net_addr), sizeof(net_addr));
+            memcpy(&gateway, &(route->gateway), sizeof(gateway));
+            _snprintf(c_net_addr, sizeof(c_net_addr), inet_ntoa(net_addr));
+            _snprintf(c_gateway, sizeof(c_gateway), inet_ntoa(gateway));
+            _snprintf(cmd, sizeof(cmd), "route add %s/%d %s > nul", c_net_addr, route->net_bitlen, c_gateway);
+            traceEvent(TRACE_NORMAL, "ROUTE CMD = '%s'\n", cmd);
+            system(cmd);
+        }
+     }
+
+#endif // WIN32
+
+    return (0);
+}
+
 /* ************************************** */
 
 static void edge_cleanup_routes(n2n_edge_t *eee) {