/// <summary>
/// Constructor.
/// </summary>
/// <param name="grant"><c>true</c> if this item grants access for clients at an IP subnet.</param>
/// <param name="address">The IP address.</param>
/// <param name="networkPrefix">The number of leading network bits in the address.</param>
/// <remarks>
/// <b>networkBits</b> is the number of bits specified after the slash (/) in the
/// classless Inter-Domain Routing (CIDR) notation for a subnet (ie. the <b>16</b> in
/// <b>206.44.123.10/16</b>).
/// </remarks>
public IPFilterItem(bool grant, IPAddress address, int networkPrefix)
{
this.grant = grant;
this.subnetMask = NetHelper.GetSubnetMask(networkPrefix);
this.address = NetHelper.ToInt32(address) & subnetMask;
}
/// <summary>
/// Determines whether the filter item applies to the specified IP address.
/// </summary>
/// <param name="address">The IPv4 address to be tested.</param>
/// <returns>
/// A <see cref="TriState" /> is returned. <see cref="TriState.True" /> indicates
/// that the IP address is explicitly granted access by the filter item, <see cref="TriState.False" />
/// indicates that the address is explicitly deined access, and <see cref="TriState.Unknown" />
/// indicates that the filter item does not apply to the address.
/// </returns>
/// <exception cref="ArgumentException">Thrown for non-IPv4 addresses.</exception>
public TriState GrantAccess(IPAddress address)
{
return(GrantAccess(NetHelper.ToInt32(address)));
}
private int address; // The IP address
/// <summary>
/// Constructor.
/// </summary>
/// <param name="grant"><c>true</c> if this item grants access for clients at an IP address.</param>
/// <param name="address">The IP address.</param>
public IPFilterItem(bool grant, IPAddress address)
{
this.grant = grant;
this.subnetMask = 0;
this.address = NetHelper.ToInt32(address);
}