Socket/NetdeviceController: added promisc() methods

[senf.git] / Socket / NetdeviceController.cc

diff --git a/Socket/NetdeviceController.cc b/Socket/NetdeviceController.cc
index 23ea64a..345679b 100644 (file)
--- a/Socket/NetdeviceController.cc
+++ b/Socket/NetdeviceController.cc
@@ -30,6 +30,7 @@
 // Custom includes
 #include <sys/socket.h>
 #include <sys/ioctl.h>
+#include <net/if.h>
 #include "../Utils/Exception.hh"
 
 #define prefix_
@@ -59,6 +60,22 @@ prefix_ std::string senf::NetdeviceController::interfaceName()
     return std::string( ifr.ifr_name);
 }
 
+prefix_ void senf::NetdeviceController::interfaceName(const std::string & newname)
+{
+    if (sizeof(newname) <= IFNAMSIZ) {
+        struct ifreq ifr;
+        ifrName(ifr);
+        strncpy(ifr. ifr_newname, newname.c_str(), IFNAMSIZ);
+        try {
+            doIoctl(ifr, SIOCSIFNAME);
+        } catch (senf::SystemException e) {
+            e << "Could not change the interface name. Is the interface really down?";
+            throw ;
+        }
+    }
+    return;
+}
+
 prefix_ senf::MACAddress senf::NetdeviceController::hardwareAddress()
     const
 {
@@ -73,7 +90,12 @@ prefix_ void senf::NetdeviceController::hardwareAddress(const MACAddress &newAdd
     ifrName( ifr);
     ifr.ifr_hwaddr.sa_family = 1; // TODO: lookup named constant; PF_LOCAL ???
     std::copy(newAddress.begin(), newAddress.end(), ifr.ifr_hwaddr.sa_data);
-    doIoctl( ifr, SIOCSIFHWADDR);
+    try {
+        doIoctl(ifr, SIOCSIFHWADDR);
+    } catch (senf::SystemException e) {
+        e << "Could not change the interface MAC address. Is the interface really down?";
+        throw ;
+    }
 }
 
 prefix_ int senf::NetdeviceController::mtu()
@@ -86,7 +108,6 @@ prefix_ int senf::NetdeviceController::mtu()
 }
 
 prefix_ void senf::NetdeviceController::mtu(int new_mtu)
-    const
 {
     struct ifreq ifr;
     ifrName( ifr);
@@ -94,6 +115,27 @@ prefix_ void senf::NetdeviceController::mtu(int new_mtu)
     doIoctl( ifr, SIOCSIFMTU);
 }
 
+prefix_ bool senf::NetdeviceController::promisc()
+    const
+{
+    struct ifreq ifr;
+    ifrName( ifr);
+    doIoctl( ifr, SIOCGIFFLAGS);
+    return ifr.ifr_flags & IFF_PROMISC;
+}
+
+prefix_ void senf::NetdeviceController::promisc(bool mode)
+{
+    struct ifreq ifr;
+    ifrName( ifr);
+    doIoctl( ifr, SIOCGIFFLAGS);
+    if (mode)
+        ifr.ifr_flags |= IFF_PROMISC;
+    else
+        ifr.ifr_flags &= ~IFF_PROMISC;
+    doIoctl( ifr, SIOCSIFFLAGS);
+}
+
 prefix_ int senf::NetdeviceController::interfaceIndex()
     const
 {
@@ -109,7 +151,7 @@ prefix_ void senf::NetdeviceController::openSocket()
 {
     sockfd_ = ::socket( PF_INET, SOCK_DGRAM, 0);
     if ( sockfd_ < 0)
-        throw SystemException("Could not open socket for NetdeviceController.");
+        SENF_THROW_SYSTEM_EXCEPTION("Could not open socket for NetdeviceController.");
 }
 
 prefix_ void senf::NetdeviceController::ifrName(ifreq& ifr)
@@ -118,7 +160,7 @@ prefix_ void senf::NetdeviceController::ifrName(ifreq& ifr)
     ::memset( &ifr, 0, sizeof(ifr));
     ifr.ifr_ifindex = ifindex_;
     if ( ::ioctl( sockfd_, SIOCGIFNAME, &ifr ) < 0 )
-        throw SystemException("NetdeviceController")
+        SENF_THROW_SYSTEM_EXCEPTION("NetdeviceController")
         << " could not discover the name of the interface with index " << ifindex_ << ".";
 }
 
@@ -126,14 +168,14 @@ prefix_ void senf::NetdeviceController::doIoctl(ifreq& ifr, int request)
     const
 {
     if ( ::ioctl( sockfd_, request, &ifr ) < 0 )
-        throw SystemException("NetdeviceController::doIoctl failed.");
+        SENF_THROW_SYSTEM_EXCEPTION("NetdeviceController::doIoctl failed.");
 }
 
 ///////////////////////////////cc.e////////////////////////////////////////
 #undef prefix_
 //#include "NetdeviceController.mpp"
 
-\f
+
 // Local Variables:
 // mode: c++
 // fill-column: 100