/// <summary>
/// Returns the embedded Wake-On-LAN packet
/// or null if there is none
/// </summary>
/// <returns>
/// A Wake-On-LAN packet
/// </returns>
public static WakeOnLanPacket GetEncapsulated(Packet p)
{
if (p is EthernetPacket)
{
var payload = EthernetPacket.GetInnerPayload((InternetLinkLayerPacket)p);
if (((EthernetPacket)p).Type == EthernetPacketType.WakeOnLan)
{
var payloadBas = new ByteArraySegment(p.PayloadData);
if (WakeOnLanPacket.IsValid(payloadBas))
{
return(new WakeOnLanPacket(payloadBas));
}
}
if (payload != null && payload is IpPacket)
{
var innerPayload = payload.PayloadPacket;
if ((innerPayload != null) &&
(innerPayload.PayloadData != null) &&
(innerPayload is UdpPacket))
{
var innerPayloadBas = new ByteArraySegment(innerPayload.PayloadData);
if (WakeOnLanPacket.IsValid(innerPayloadBas))
{
return(new WakeOnLanPacket(innerPayloadBas));
}
}
}
}
return(null);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="bas">
/// A <see cref="ByteArraySegment"/>
/// </param>
public LinuxSLLPacket(ByteArraySegment bas)
{
header = new ByteArraySegment(bas);
header.Length = LinuxSLLFields.SLLHeaderLength;
// parse the payload via an EthernetPacket method
payloadPacketOrData = EthernetPacket.ParseEncapsulatedBytes(header,
EthernetProtocolType);
}
/// <summary>
/// Parse bytes into a packet
/// </summary>
/// <param name="LinkLayer">
/// A <see cref="LinkLayers"/>
/// </param>
/// <param name="PacketData">
/// A <see cref="System.Byte"/>
/// </param>
/// <returns>
/// A <see cref="Packet"/>
/// </returns>
public static Packet ParsePacket(LinkLayers LinkLayer,
byte[] PacketData)
{
Packet p;
var bas = new ByteArraySegment(PacketData);
log.DebugFormat("LinkLayer {0}", LinkLayer);
switch (LinkLayer)
{
case LinkLayers.Ethernet:
p = new EthernetPacket(bas);
break;
case LinkLayers.LinuxSLL:
p = new LinuxSLLPacket(bas);
break;
case LinkLayers.Ppp:
p = new PPPPacket(bas);
break;
case LinkLayers.Ieee80211:
p = Ieee80211.MacFrame.ParsePacket(bas);
break;
case LinkLayers.Ieee80211_Radio:
p = new Ieee80211.RadioPacket(bas);
break;
case LinkLayers.PerPacketInformation:
p = new Ieee80211.PpiPacket(bas);
break;
default:
throw new System.NotImplementedException("LinkLayer of " + LinkLayer + " is not implemented");
}
return(p);
}
