Esempio n. 1
0
        private static unsafe int GetInterfaceIndex(int fd, string name)
        {
            const uint SIOCGIFINDEX = 0x8933;
            const int  MaxLen       = ifreq.IFNAMSIZ - 1;

            if (name.Length >= MaxLen)
            {
                throw new ArgumentException($"`{name}` exceeds maximum allowed length of {MaxLen} size", nameof(name));
            }

            ifreq ifr = new ifreq();

            fixed(char *inIntefaceName = name)
            {
                int written = Encoding.ASCII.GetBytes(inIntefaceName, name.Length, ifr.ifr_name, MaxLen);

                ifr.ifr_name[written] = 0;
            }

            int ret = Ioctl3(fd, SIOCGIFINDEX, ref ifr);

            if (ret == -1)
            {
                throw new IOException($"Could not get interface index for `{name}`");
            }

            return(ifr.ifr_ifindex);
        }
Esempio n. 2
0
 private static extern int ioctl(int fd, int request, ref ifreq mtu);
Esempio n. 3
0
        private UnixStream OpenSocket(uint?mtu)
        {
            /*
             * sockaddr_ll sa = new sockaddr_ll();
             * sa.sll_family = AF_CAN;
             * sa.sll_protocol = CAN_RAW;
             * sa.sll_ifindex = if_nametoindex(Interface);
             */
            sockaddr_can addr = new sockaddr_can();

            addr.can_family = AF_CAN;

            int fd = -1, ret = -1;

            try
            {
                fd = socket(AF_CAN, SOCK_RAW, CAN_RAW);
                UnixMarshal.ThrowExceptionForLastErrorIf(fd);

                ifreq ifr = new ifreq(Interface);

                /* Doesn't seem to work
                 * ret = ioctl(fd, SIOCGIFINDEX, ref ifr);
                 * UnixMarshal.ThrowExceptionForLastErrorIf(ret);
                 */
                addr.can_ifindex = if_nametoindex(Interface);

                if (addr.can_ifindex == 0)
                {
                    throw new ArgumentException("The interface \"" + Interface + "\" is not valid.");
                }

                ret = bind(fd, ref addr, Marshal.SizeOf(addr));
                UnixMarshal.ThrowExceptionForLastErrorIf(ret);

/*
 *                              if (orig_mtu == 0)
 *                              {
 *                                      ret = ioctl(fd, SIOCGIFMTU, ref ifr);
 *                                      UnixMarshal.ThrowExceptionForLastErrorIf(ret);
 *                                      orig_mtu = ifr.ifru_mtu;
 *                              }
 *
 *                              if (mtu != null)
 *                              {
 *                                      ifr.ifru_mtu = mtu.Value;
 *                                      //ret = ioctl(fd, SIOCSIFMTU, ref ifr);
 *                                      ret = ioctl(fd, SIOCGIFMTU, ref ifr);
 *                                      UnixMarshal.ThrowExceptionForLastErrorIf(ret);
 *                              }
 *
 */
                ret = ioctl(fd, SIOCGIFMTU, ref ifr);
                UnixMarshal.ThrowExceptionForLastErrorIf(ret);

/*
 *                              if (mtu != null && ifr.ifru_mtu != mtu.Value)
 *                                      throw new PeachException("MTU change did not take effect.");
 */

                _mtu = ifr.ifru_mtu;

/*
 *
 *                              if (ifr.ifru_mtu > (MaxMTU - EthernetHeaderSize))
 *                                      _bufferSize = (int)MaxMTU;
 *                              else
 *                                      _bufferSize = (int)(ifr.ifru_mtu + EthernetHeaderSize);
 */
                _bufferSize = CAN_MTU;

                var stream = new UnixStream(fd);

                fd = -1;

                return(stream);
            }
            catch (InvalidOperationException ex)
            {
                if (ex.InnerException != null)
                {
                    var inner = ex.InnerException as UnixIOException;
                    if (inner != null && inner.ErrorCode == Errno.EPERM)
                    {
                        throw new PeachException("Access denied when opening the raw ethernet publisher.  Ensure the user has the appropriate permissions.", ex);
                    }
                }

                throw;
            }
            finally
            {
                if (fd != -1)
                {
                    Syscall.close(fd);
                }
            }
        }
Esempio n. 4
0
 public NetworkAdapterImpl(string name)
     : base(name)
 {
     socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
     ifr    = new ifreq(name);
 }
Esempio n. 5
0
 private static extern int Ioctl3(int fd, uint request, ref ifreq ifr);
        private UnixStream OpenSocket(uint?mtu)
        {
            sockaddr_ll sa = new sockaddr_ll();

            sa.sll_family   = AF_PACKET;
            sa.sll_protocol = (ushort)IPAddress.HostToNetworkOrder((short)Protocol);
            sa.sll_ifindex  = if_nametoindex(Interface);

            if (sa.sll_ifindex == 0)
            {
                throw new ArgumentException("The interface \"" + Interface + "\" is not valid.");
            }

            int fd = -1, ret = -1;

            try
            {
                fd = socket(AF_PACKET, SOCK_RAW, sa.sll_protocol);
                UnixMarshal.ThrowExceptionForLastErrorIf(fd);

                ret = bind(fd, ref sa, Marshal.SizeOf(sa));
                UnixMarshal.ThrowExceptionForLastErrorIf(ret);

                ifreq ifr = new ifreq(Interface);

                if (orig_mtu == 0)
                {
                    ret = ioctl(fd, SIOCGIFMTU, ref ifr);
                    UnixMarshal.ThrowExceptionForLastErrorIf(ret);
                    orig_mtu = ifr.ifru_mtu;
                }

                if (mtu != null)
                {
                    ifr.ifru_mtu = mtu.Value;
                    ret          = ioctl(fd, SIOCSIFMTU, ref ifr);
                    UnixMarshal.ThrowExceptionForLastErrorIf(ret);
                }

                ret = ioctl(fd, SIOCGIFMTU, ref ifr);
                UnixMarshal.ThrowExceptionForLastErrorIf(ret);

                if (mtu != null && ifr.ifru_mtu != mtu.Value)
                {
                    throw new PeachException("MTU change did not take effect.");
                }

                _mtu = ifr.ifru_mtu;

                if (ifr.ifru_mtu > (MaxMTU - EthernetHeaderSize))
                {
                    _bufferSize = (int)MaxMTU;
                }
                else
                {
                    _bufferSize = (int)(ifr.ifru_mtu + EthernetHeaderSize);
                }

                var stream = new UnixStream(fd);
                fd = -1;

                return(stream);
            }
            catch (InvalidOperationException ex)
            {
                if (ex.InnerException != null)
                {
                    var inner = ex.InnerException as UnixIOException;
                    if (inner != null && inner.ErrorCode == Errno.EPERM)
                    {
                        throw new PeachException("Access denied when opening the raw ethernet publisher.  Ensure the user has the appropriate permissions.", ex);
                    }
                }

                throw;
            }
            finally
            {
                if (fd != -1)
                {
                    Syscall.close(fd);
                }
            }
        }
Esempio n. 7
0
		private static extern int ioctl(int fd, int request, ref ifreq mtu);
Esempio n. 8
0
		private UnixStream OpenSocket(uint? mtu)
		{
			/*
			sockaddr_ll sa = new sockaddr_ll();
			sa.sll_family = AF_CAN;
			sa.sll_protocol = CAN_RAW;
			sa.sll_ifindex = if_nametoindex(Interface);
			*/
			sockaddr_can addr = new sockaddr_can();
			addr.can_family = AF_CAN;

			int fd = -1, ret = -1;

			try
			{
				fd = socket(AF_CAN, SOCK_RAW, CAN_RAW);
				UnixMarshal.ThrowExceptionForLastErrorIf(fd);

				ifreq ifr = new ifreq(Interface);
				/* Doesn't seem to work
				ret = ioctl(fd, SIOCGIFINDEX, ref ifr);
				UnixMarshal.ThrowExceptionForLastErrorIf(ret);
				*/
				addr.can_ifindex = if_nametoindex(Interface);

				if (addr.can_ifindex == 0)
					throw new ArgumentException("The interface \"" + Interface + "\" is not valid.");

				ret = bind(fd, ref addr, Marshal.SizeOf(addr));
				UnixMarshal.ThrowExceptionForLastErrorIf(ret);

/*
				if (orig_mtu == 0)
				{
					ret = ioctl(fd, SIOCGIFMTU, ref ifr);
					UnixMarshal.ThrowExceptionForLastErrorIf(ret);
					orig_mtu = ifr.ifru_mtu;
				}

				if (mtu != null)
				{
					ifr.ifru_mtu = mtu.Value;
					//ret = ioctl(fd, SIOCSIFMTU, ref ifr);
					ret = ioctl(fd, SIOCGIFMTU, ref ifr);
					UnixMarshal.ThrowExceptionForLastErrorIf(ret);
				}

*/
				ret = ioctl(fd, SIOCGIFMTU, ref ifr);
				UnixMarshal.ThrowExceptionForLastErrorIf(ret);
/*
				if (mtu != null && ifr.ifru_mtu != mtu.Value)
					throw new PeachException("MTU change did not take effect.");
*/

				_mtu = ifr.ifru_mtu;
/*

				if (ifr.ifru_mtu > (MaxMTU - EthernetHeaderSize))
					_bufferSize = (int)MaxMTU;
				else
					_bufferSize = (int)(ifr.ifru_mtu + EthernetHeaderSize);
*/
				_bufferSize = CAN_MTU;

				var stream = new UnixStream(fd);

				fd = -1;

				return stream;
			}
			catch (InvalidOperationException ex)
			{
				if (ex.InnerException != null)
				{
					var inner = ex.InnerException as UnixIOException;
					if (inner != null && inner.ErrorCode == Errno.EPERM)
						throw new PeachException("Access denied when opening the raw ethernet publisher.  Ensure the user has the appropriate permissions.", ex);
				}

				throw;
			}
			finally
			{
				if (fd != -1)
					Syscall.close(fd);
			}
		}