bool PcapInitIO(string adapter)
{
StringBuilder errbuf = new StringBuilder(PCAP_ERRBUF_SIZE);
//Set PS2 MAC Based on Adapter MAC
if ((adHandle = NativeMethods.pcap_open_live(adapter,
65536,
switched ? 1 : 0,
1,
errbuf)) == IntPtr.Zero)
{
Log_Error(errbuf.ToString());
Log_Error("Unable to open the adapter. " + adapter + "is not supported by WinPcap");
return(false);
}
if (!PcapIsValid(adHandle, true))
{
return(false);
}
if (NativeMethods.pcap_setnonblock(adHandle, 1, errbuf) == -1)
{
Log_Error("WARNING: Error setting non-blocking mode. Default mode will be used");
}
//Don't bother with pcap logs yet
if (switched)
{
//Setup Filter
string filter_mac = "{0:x2}:{1:x2}:{2:x2}:{3:x2}:{4:x2}:{5:x2}";
string filter = "(ether broadcast or ether multicast or ether dst {0}) and not ether src {0}";
filter_mac = string.Format(filter_mac, ps2MAC[0], ps2MAC[1], ps2MAC[2], ps2MAC[3], ps2MAC[4], ps2MAC[5]);
filter = string.Format(filter, filter_mac);
bpf_program program = new bpf_program();
if (NativeMethods.pcap_compile(adHandle, ref program, filter, 1, PCAP_NETMASK_UNKNOWN) == -1)
{
Log_Error("Error calling pcap_compile: " + NativeMethods.pcap_geterr(adHandle));
return(false);
}
if (NativeMethods.pcap_setfilter(adHandle, ref program) == -1)
{
Log_Error("Error setting filter: " + NativeMethods.pcap_geterr(adHandle));
return(false);
}
NativeMethods.pcap_freecode(ref program);
}
pcapRunning = true;
return(true);
}
public static extern int PacketSetBpf(IntPtr AdapterObject, bpf_program fp);
public static extern int pcap_setfilter(IntPtr p, ref bpf_program ptr_bpf_program);
public static extern void pcap_freecode(ref bpf_program ptr_bpf_program);
public static extern int pcap_compile(IntPtr p, ref bpf_program ptr_bpf_program, string str, int optimize, int netmask);
