1 files changed, 66 insertions, 76 deletions

diff --git a/LogReceiver/routemanager.cpp b/LogReceiver/routemanager.cpp
index 3063b21..98ce2ad 100644
--- a/LogReceiver/routemanager.cpp
+++ b/LogReceiver/routemanager.cpp
@@ -16,115 +16,105 @@ routemanager::~routemanager() {
 	// TODO Auto-generated destructor stub
 }
 
-int routemanager::addRoute(QString ifname, QString destination,
-		QString netmask, QString gateway, int metric) {
-	//struct in_addr destination, netmask, gateway;
-	//add_route();
-	return doRoute(destination, gateway, AF_INET, 0);
-}
-
-int routemanager::addRoute6(QString ifname, QString destination,
-		QString netmask, QString gateway, int metric) {
-	//struct in_addr destination, netmask, gateway;
-	//add_route();
-	return doRoute(destination, gateway, AF_INET6, 0);
-}
-
-
-int routemanager::delRoute(QString ifname, QString destination,
-		QString netmask, QString gateway, int metric) {
-	/*struct in_addr ds, nm, gw;
-	 ba = ifname.toAscii();
-	 const char *in = ba.constData();
-	 inet_aton("0.0.0.0", &ds);
-	 inet_aton("0.0.0.0", &nm);
-	 ba = gateway.toAscii();
-	 char * gwaddr = ba.data();
-	 inet_aton(gwaddr,&gw);
-	 del_route(in, ds, nm, gw, metric);
-	 */
-	return doRoute(destination, gateway, AF_INET, 1);
-}
-
-int routemanager::delRoute6(QString ifname, QString destination,
-		QString netmask, QString gateway, int metric) {
-	return doRoute(destination, gateway, AF_INET6, 1);
-}
-
 /**
- * This method adds or deletes a route.
- * This method adds or deletes a route. According to the action,
- * you can delete a route or add a route from/to the
- * main routing table. In most cases, this method will be used for deleting
- * or adding a default rout. To keep it modular, it is possible
+ * This method adds /replaces the default route.
+ * This method adds /replaces the default route.
+ * To keep it modular, it is possible
  * to specify an ip address family.
  *
- * @param destination
- *  the destination address (e.g: 0.0.0.0)
+ * @param ifName
+ *  the interface name
  *
  * @param gateway
  *  the gateway address (e.g: 192.168.0.254)
- *
+ * @param mss
+ *  the mss.
  * @param af
  *  specify the family type of the ip address.
  *  possible values are: AF_INET for an IPv4 address
  *                       AF_INET6 for an IPv6 address
  *
- * @param action
- *  possible values are: 0: perform add route
- *                       1: perform delete route
- *
+
  * @return
- *  return 1 if an error happened.
+ *  return -1 if an error happened.
  *  return 0 if everything was ok.
  */
-int routemanager::doRoute(QString destination, QString gateway, int af, int action) {
+int routemanager::replaceDefaultRoute(QString ifname, QString gateway,
+		int mss, int af) {
+	struct nl_cache *cache;
 	struct nl_handle* rtsock;
-	struct nl_addr * dst;
 	struct nl_addr * gw;
 	struct rtnl_route * route;
-	int retval;
+	int retval, iface_idx;
 
-	ba = destination.toAscii();
-	char *dstaddr = ba.data();
+	QByteArray ba_ifn = ifname.toAscii();
+	char * ifn = ba_ifn.data();
 
-	ba = gateway.toAscii();
-	char * gwaddr = ba.data();
+	QByteArray ba_gw = gateway.toAscii();
+	char * gwaddr = ba_gw.data();
+
+	qDebug() << "---doRoute() gwaddr" << gwaddr;
 
-	if (!(dst = nl_addr_parse(dstaddr, af))) {
-		qDebug() << "Invalid network address given:" << dstaddr;
-		return -1;
-	}
 	if (!(gw = nl_addr_parse(gwaddr, af))) {
-		qDebug() << "Invalid router address given: " << gwaddr;
-		nl_addr_put(dst);
+		printf("Invalid router address given: %s\n", gwaddr);
 		return -1;
 	}
 
-	route = rtnl_route_alloc();
-	rtnl_route_set_family(route, af);
-	rtnl_route_set_scope(route, RT_SCOPE_UNIVERSE);
-	rtnl_route_set_dst(route, dst);
-	rtnl_route_set_gateway(route, gw);
-
 	rtsock = nl_handle_alloc();
 	nl_connect(rtsock, NETLINK_ROUTE);
 
-	if (action == 0) {
-		rtnl_route_add(rtsock, route, 0);
-	}
-	else if (action == 1) {
-		rtnl_route_del(rtsock, route, 0);
+	if ((cache = rtnl_link_alloc_cache(rtsock)) == NULL) {
+		printf("error with link cache alloc \n");
 	}
-	else {
-		qDebug() << "unknown action:" << action;
+
+	iface_idx = rtnl_link_name2i(cache, ifn);
+
+	route = rtnl_route_alloc();
+	rtnl_route_set_scope(route, RT_SCOPE_UNIVERSE);
+	rtnl_route_set_gateway(route, gw);
+	rtnl_route_set_oif(route, iface_idx);
+
+	if (mss > 0) {
+		rtnl_route_set_metric(route, RTAX_ADVMSS, mss);
 	}
 
+	retval = rtnl_route_add(rtsock, route, NLM_F_REPLACE);
+	qDebug() << "return value:" << retval << ":" <<  strerror(-retval);
 
 	rtnl_route_put(route);
-	nl_addr_put(dst);
 	nl_addr_put(gw);
 	nl_handle_destroy(rtsock);
 
-	return 0;
+	return retval;
 }
+
+/**
+ * This method adds or deletes a route.
+ * This method adds or deletes a route. According to the action,
+ * you can delete a route or add a route from/to the
+ * main routing table. In most cases, this method will be used for deleting
+ * or adding a default rout. To keep it modular, it is possible
+ * to specify an ip address family.
+ *
+ * @param ifName
+ *  the interface name.
+ * @param destination
+ *  the destination address (e.g: 0.0.0.0)
+ *
+ * @param gateway
+ *  the gateway address (e.g: 192.168.0.254)
+ *
+ * @param af
+ *  specify the family type of the ip address.
+ *  possible values are: AF_INET for an IPv4 address
+ *                       AF_INET6 for an IPv6 address
+ *
+ * @param action
+ *  possible values are: 0: perform add route
+ *                       1: perform delete route
+ *
+ * @return
+ *  return 1 if an error happened.
+ *  return 0 if everything was ok.
+ */
+int routemanager::doRoute(QString ifName, QString destination, QString gateway, int af, int action) {return 0;}