diff options
Diffstat (limited to 'LogReceiver/networkmanager.cpp')
| -rw-r--r-- | LogReceiver/networkmanager.cpp | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/LogReceiver/networkmanager.cpp b/LogReceiver/networkmanager.cpp new file mode 100644 index 0000000..9edcf5e --- /dev/null +++ b/LogReceiver/networkmanager.cpp @@ -0,0 +1,178 @@ +/* + * networkmanager.cpp + * + * Created on: Sep 5, 2011 + * Author: niklas + */ + +#include "networkmanager.h" + +NetworkManager::NetworkManager() { + // TODO Auto-generated constructor stub + +} + +NetworkManager::~NetworkManager() { + // TODO Auto-generated destructor stub +} + +/** + * 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 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 + * + + * @return + * return -1 if an error happened. + * return 0 if everything was ok. + */ +int NetworkManager::replaceDefaultRoute(QString ifname, QString gateway, + int mss, int af) { + struct nl_cache *cache; + struct nl_handle* rtsock; + struct nl_addr * gw; + struct rtnl_route * route; + int retval, iface_idx; + + QByteArray ba_ifn = ifname.toAscii(); + char * ifn = ba_ifn.data(); + + QByteArray ba_gw = gateway.toAscii(); + char * gwaddr = ba_gw.data(); + + qDebug() << "---doRoute() gwaddr" << gwaddr; + + if (!(gw = nl_addr_parse(gwaddr, af))) { + qDebug() << "Invalid router address given: %s\n", gwaddr; + return -1; + } + + rtsock = nl_handle_alloc(); + nl_connect(rtsock, NETLINK_ROUTE); + + if ((cache = rtnl_link_alloc_cache(rtsock)) == NULL) { + qDebug() << "error with link cache alloc \n"; + } + + 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(gw); + nl_handle_destroy(rtsock); + + return retval; +} +/** + * This method brings an interface up or down. + * + * @param ifname + * is a string which contains the interface name which is going down or up. + * + * @param up + * is a bool. true means. we bring the interface up. + * false meand. we bring the interface down. + * @return + * 0 if everything is ok + * else an error + */ +int NetworkManager::bringInterfaceUpDown(QString ifname, bool up) { + struct nl_cache *cache; + struct nl_handle* rtsock; + struct rtnl_link* request = NULL; + struct rtnl_link* old = NULL; + int retval; + + QByteArray ba_ifn = ifname.toAscii(); + char * ifn = ba_ifn.data(); + + if(!(request = rtnl_link_alloc())) { + qDebug() << "error. couldn't allocate a rtnl link"; + return -1; + } + + rtsock = nl_handle_alloc(); + nl_connect(rtsock, NETLINK_ROUTE); + + if(up) { + rtnl_link_set_flags(request,IFF_UP); + } else { + rtnl_link_unset_flags(request, IFF_UP); + } + + if ((cache = rtnl_link_alloc_cache(rtsock)) == NULL) { + qDebug() << "error with link cache alloc "; + } + + old = rtnl_link_get_by_name(cache,ifn); + if (old) { + qDebug() << "change link"; + retval = rtnl_link_change(rtsock, old, request, 0); + } else { + qDebug() << "change failed"; + retval = -1; + qDebug() << "return value:" << retval << ":" << strerror(-retval); + } + + + rtnl_link_put(old); + rtnl_link_put(request); + nl_handle_destroy(rtsock); + + 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 NetworkManager::doRoute(QString ifName, QString destination, QString gateway, int af, int action) {return 0;} |