public unsafe PacketCommunicatorReceiveResult ReceiveSomePackets(out int countGot, int maxPackets, HandlePacket callback)
{
this.AssertMode(PacketCommunicatorMode.Capture);
PcapDataLink dataLink = new PcapDataLink(\u003CModule\u003E.pcap_datalink(this._pcapDescriptor));
PacketCommunicator.PacketHandler packetHandler = new PacketCommunicator.PacketHandler(callback, dataLink);
PacketCommunicator.HandlerDelegate handlerDelegate = new PacketCommunicator.HandlerDelegate(packetHandler.Handle);
// ISSUE: cast to a function pointer type
__FnPtr <void (byte *, pcap_pkthdr *, byte *)> local = (__FnPtr <void (byte *, pcap_pkthdr *, byte *)>)(IntPtr) Marshal.GetFunctionPointerForDelegate((Delegate)handlerDelegate).ToPointer();
countGot = \u003CModule\u003E.pcap_dispatch(this._pcapDescriptor, maxPackets, local, (byte *)0);
GC.KeepAlive((object)handlerDelegate);
switch (countGot)
{
case -2:
countGot = 0;
return(PacketCommunicatorReceiveResult.BreakLoop);
case -1:
throw PcapError.BuildInvalidOperation("Failed reading from device", this._pcapDescriptor);
case 0:
if (packetHandler.PacketCounter != 0)
{
countGot = packetHandler.PacketCounter;
return(PacketCommunicatorReceiveResult.Eof);
}
break;
}
return(PacketCommunicatorReceiveResult.Ok);
}
public unsafe void SetKernelMinimumBytesToCopy(int size)
{
if (\u003CModule\u003E.pcap_setmintocopy(this._pcapDescriptor, size) != 0)
{
throw PcapError.BuildInvalidOperation("Error setting kernel minimum bytes to copy to " + size.ToString((IFormatProvider)CultureInfo.InvariantCulture), this._pcapDescriptor);
}
}
public unsafe void SetKernelBufferSize(int size)
{
if (\u003CModule\u003E.pcap_setbuff(this._pcapDescriptor, size) != 0)
{
throw PcapError.BuildInvalidOperation("Error setting kernel buffer size to " + size.ToString((IFormatProvider)CultureInfo.InvariantCulture), this._pcapDescriptor);
}
}
internal unsafe void SetFilter(pcap *pcapDescriptor)
{
if (\u003CModule\u003E.pcap_setfilter(pcapDescriptor, this._bpf) != 0)
{
throw PcapError.BuildInvalidOperation("Failed setting bpf filter", pcapDescriptor);
}
}
internal unsafe void Transmit(pcap *pcapDescriptor, [MarshalAs(UnmanagedType.U1)] bool isSync)
{
if (\u003CModule\u003E.pcap_sendqueue_transmit(pcapDescriptor, this._pcapSendQueue, isSync ? 1 : 0) < (uint)*(int *)((IntPtr)this._pcapSendQueue + 4L))
{
throw PcapError.BuildInvalidOperation("Failed transmiting packets from queue", pcapDescriptor);
}
}
public unsafe PacketCommunicatorReceiveResult ReceiveStatistics(int count, HandleStatistics callback)
{
this.AssertMode(PacketCommunicatorMode.Statistics);
PacketCommunicator.HandlerDelegate handlerDelegate = new PacketCommunicator.HandlerDelegate(new PacketCommunicator.StatisticsHandler(callback).Handle);
// ISSUE: cast to a function pointer type
__FnPtr <void (byte *, pcap_pkthdr *, byte *)> local = (__FnPtr <void (byte *, pcap_pkthdr *, byte *)>)(IntPtr) Marshal.GetFunctionPointerForDelegate((Delegate)handlerDelegate).ToPointer();
int num = \u003CModule\u003E.pcap_loop(this._pcapDescriptor, count, local, (byte *)0);
GC.KeepAlive((object)handlerDelegate);
if (num == -1)
{
throw PcapError.BuildInvalidOperation("Failed reading from device", this._pcapDescriptor);
}
return(num != -2 ? PacketCommunicatorReceiveResult.Ok : PacketCommunicatorReceiveResult.BreakLoop);
}
public unsafe void SendPacket(Packet packet)
{
if (packet == null)
{
throw new ArgumentNullException("packet");
}
if (packet.Length == 0)
{
return;
fixed(byte *numPtr = &packet.Buffer[0])
{
if (\u003CModule\u003E.pcap_sendpacket(this._pcapDescriptor, numPtr, packet.Length) != 0)
{
throw PcapError.BuildInvalidOperation("Failed writing to device", this._pcapDescriptor);
}
}
}
public unsafe PacketCommunicatorReceiveResult ReceivePackets(int count, HandlePacket callback)
{
this.AssertMode(PacketCommunicatorMode.Capture);
PcapDataLink dataLink = new PcapDataLink(\u003CModule\u003E.pcap_datalink(this._pcapDescriptor));
PacketCommunicator.PacketHandler packetHandler = new PacketCommunicator.PacketHandler(callback, dataLink);
PacketCommunicator.HandlerDelegate handlerDelegate = new PacketCommunicator.HandlerDelegate(packetHandler.Handle);
// ISSUE: cast to a function pointer type
__FnPtr <void (byte *, pcap_pkthdr *, byte *)> local = (__FnPtr <void (byte *, pcap_pkthdr *, byte *)>)(IntPtr) Marshal.GetFunctionPointerForDelegate((Delegate)handlerDelegate).ToPointer();
int num = \u003CModule\u003E.pcap_loop(this._pcapDescriptor, count, local, (byte *)0);
GC.KeepAlive((object)handlerDelegate);
if (num == -2)
{
return(PacketCommunicatorReceiveResult.BreakLoop);
}
if (num == -1)
{
throw PcapError.BuildInvalidOperation("Failed reading from device", this._pcapDescriptor);
}
return(num == 0 && packetHandler.PacketCounter != count ? PacketCommunicatorReceiveResult.Eof : PacketCommunicatorReceiveResult.Ok);
}
private unsafe void Initialize(pcap *pcapDescriptor, string filterString, IpV4SocketAddress netmask)
{
// ISSUE: untyped stack allocation
long num1 = (long)__untypedstackalloc(\u003CModule\u003E.__CxxQueryExceptionSize());
basic_string\u003Cchar\u002Cstd\u003A\u003Achar_traits\u003Cchar\u003E\u002Cstd\u003A\u003Aallocator\u003Cchar\u003E\u0020\u003E stdAllocatorChar;
MarshalingServices.ManagedToUnmanagedString(&stdAllocatorChar, filterString);
// ISSUE: fault handler
try
{
uint num2 = 0U;
if (netmask != null)
{
num2 = netmask.Address.ToValue();
}
bpf_program *bpfProgramPtr1 = (bpf_program *)\u003CModule\u003E.@new(16UL);
bpf_program *bpfProgramPtr2;
if ((IntPtr)bpfProgramPtr1 != IntPtr.Zero)
{
// ISSUE: initblk instruction
__memset((IntPtr)bpfProgramPtr1, 0, 16L);
bpfProgramPtr2 = bpfProgramPtr1;
}
else
{
bpfProgramPtr2 = (bpf_program *)0;
}
this._bpf = bpfProgramPtr2;
try
{
if (\u003CModule\u003E.pcap_compile(pcapDescriptor, this._bpf, \u003CModule\u003E.std\u002Ebasic_string\u003Cchar\u002Cstd\u003A\u003Achar_traits\u003Cchar\u003E\u002Cstd\u003A\u003Aallocator\u003Cchar\u003E\u0020\u003E\u002Ec_str(&stdAllocatorChar), 1, num2) < 0)
{
throw new ArgumentException("An error has occured when compiling the filter <" + filterString + ">: " + PcapError.GetErrorMessage(pcapDescriptor));
}
}
catch (Exception ex1) when(
{
// ISSUE: unable to correctly present filter
uint num3 = (uint)Marshal.GetExceptionCode();
if (\u003CModule\u003E.__CxxExceptionFilter((void *)Marshal.GetExceptionPointers(), (void *)0, 0, (void *)0) != 0)
{
SuccessfulFiltering;
}
else
{
throw;
}
}
)
{
uint num4 = 0U;
\u003CModule\u003E.__CxxRegisterExceptionObject((void *)Marshal.GetExceptionPointers(), (void *)num1);
try
{
try
{
\u003CModule\u003E.delete((void *)this._bpf);
\u003CModule\u003E._CxxThrowException((void *)0, (_s__ThrowInfo *)0);
}
catch (Exception ex2) when(
{
// ISSUE: unable to correctly present filter
num4 = (uint)\u003CModule\u003E.__CxxDetectRethrow((void *)Marshal.GetExceptionPointers());
if ((int)num4 != 0)
{
SuccessfulFiltering;
}
else
{
throw;
}
}
)
{
}
if ((int)num4 != 0)
{
throw;
}
}
