public BerkeleyPacketFilter(string filterValue, int snapshotLength, DataLinkKind kind, IpV4SocketAddress netmask)
{
this.Initialize(filterValue, snapshotLength, kind, netmask);
}
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;
}
}
internal unsafe BerkeleyPacketFilter(pcap *pcapDescriptor, string filterString, IpV4SocketAddress netmask)
{
this.Initialize(pcapDescriptor, filterString, netmask);
}