Port netif_gnu to the new api.

Author: yelninei

src/common/netif/netif_gnu.c

@@ -7,39 +7,29 @@
 #define FF_STR_INDIR(x) #x
 #define FF_STR(x) FF_STR_INDIR(x)
 
-static bool getDefaultRouteIPv4(char iface[IF_NAMESIZE + 1], uint32_t* ifIndex, uint32_t* preferredSourceAddr)
+bool ffNetifGetDefaultRouteImplV4(FFNetifDefaultRouteResult* result)
 {
-    if (preferredSourceAddr)
-        *preferredSourceAddr = 0;
     // Based on netif_linux.c before 5e770dc8b019702ca458cc0cad46161ebec608a4
     FILE* FF_AUTO_CLOSE_FILE netRoute = fopen("/proc/route", "r");
 
     if (!netRoute) return false;
 
     // skip first line
     FF_UNUSED(fscanf(netRoute, "%*[^\n]\n"));
-
     unsigned long long destination; //, gateway, flags, refCount, use, metric, mask, mtu, ...
-    while (fscanf(netRoute, "%" FF_STR(IF_NAMESIZE) "s%llx%*[^\n]", iface, &destination) == 2)
+    while (fscanf(netRoute, "%" FF_STR(IF_NAMESIZE) "s%llx%*[^\n]", result->ifName, &destination) == 2)
     {
         if (destination != 0) continue;
-        *ifIndex = if_nametoindex(iface);
+        result->ifIndex = if_nametoindex(result->ifName);
+	// TODO: Get the preferred source address
         return true;
     }
-    iface[0] = '\0';
+    result->ifName[0] = '0';
     return false;
 }
 
-static bool getDefaultRouteIPv6(char iface[IF_NAMESIZE + 1], uint32_t* ifIndex, uint32_t* preferredSourceAddr)
+bool ffNetifGetDefaultRouteImplV6(FFNetifDefaultRouteResult* result)
 {
-    // TODO ipv6
+    // TODO: AF_INET6
     return false;
 }
-
-bool ffNetifGetDefaultRouteImpl(char iface[IF_NAMESIZE + 1], uint32_t* ifIndex, uint32_t* preferredSourceAddr)
-{
-    if (getDefaultRouteIPv4(iface, ifIndex, preferredSourceAddr))
-        return true;
-
-    return getDefaultRouteIPv6(iface, ifIndex, preferredSourceAddr);
-}