/// <summary>
/// Checkes whether this rule matches a given frame.
/// </summary>
/// <param name="frame">The original frame</param>
/// <param name="ethFrame">The Ethernet part of the frame</param>
/// <param name="ipv4Frame">The IPv4 part of the frame</param>
/// <param name="udpFrame">The UDP part of the frame</param>
/// <param name="tcpFrame">The TCP part of the frame</param>
/// <returns>A bool indicating whether this rule matches a given frame.</returns>
public override bool IsMatch(Frame frame, eExNetworkLibrary.Ethernet.EthernetFrame ethFrame, eExNetworkLibrary.IP.IPFrame ipFrame, eExNetworkLibrary.UDP.UDPFrame udpFrame, eExNetworkLibrary.TCP.TCPFrame tcpFrame)
{
bool bResult;
int iFrameSourcePort = 0;
int iFrameDestinationPort = 0;
if ((this.tProtocol == TransportProtocol.Any || this.tProtocol == TransportProtocol.TCP) && tcpFrame != null)
{
iFrameDestinationPort = tcpFrame.DestinationPort;
iFrameSourcePort = tcpFrame.SourcePort;
}
else if ((this.tProtocol == TransportProtocol.Any || this.tProtocol == TransportProtocol.TCP) && udpFrame != null)
{
iFrameSourcePort = udpFrame.SourcePort;
iFrameDestinationPort = udpFrame.DestinationPort;
}
else
{
return(false); //We have no TCP/UDP frame.
}
if (iPort != -1)
{
//Single port match
bResult = iPort == iFrameDestinationPort || iPort == iFrameSourcePort;
}
else
{
bResult = (iSourcePort == -1 || iSourcePort == iFrameSourcePort) && (iDestinationPort == -1 || iDestinationPort == iFrameDestinationPort);
}
return(bResult && base.IsMatch(frame, ethFrame, ipFrame, udpFrame, tcpFrame));
}
/// <summary>
/// Checkes whether this rule matches a given frame.
/// </summary>
/// <param name="frame">The original frame</param>
/// <param name="ethFrame">The Ethernet part of the frame</param>
/// <param name="ipv4Frame">The IPv4 part of the frame</param>
/// <param name="udpFrame">The UDP part of the frame</param>
/// <param name="tcpFrame">The TCP part of the frame</param>
/// <returns>A bool indicating whether this rule matches a given frame.</returns>
public override bool IsMatch(Frame frame, eExNetworkLibrary.Ethernet.EthernetFrame ethFrame, eExNetworkLibrary.IP.IPFrame ipFrame, eExNetworkLibrary.UDP.UDPFrame udpFrame, eExNetworkLibrary.TCP.TCPFrame tcpFrame)
{
if (ipFrame != null)
{
bool bResult;
if (ipaAddress != null)
{
bResult = Match(ipFrame.SourceAddress, ipaAddress, smWildcard) ||
Match(ipFrame.DestinationAddress, ipaAddress, smWildcard);
}
else
{
bResult = Match(ipFrame.SourceAddress, ipaSource, smSourceWildcard) &&
Match(ipFrame.DestinationAddress, ipaDestination, smDestinationWildcard);
}
return(bResult && base.IsMatch(frame, ethFrame, ipFrame, udpFrame, tcpFrame));
}
return(false);
}
