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package net.java.sip.communicator.impl.netaddr;
import java.net.*;
import net.java.sip.communicator.util.*;
/**
* todo: add a type for the open internet
*
*
* @author Emil Ivov
*/
public class FirewallDescriptor
{
private static final Logger logger =
Logger.getLogger(FirewallDescriptor.class);
/**
* The amount of preference points that a firewall corresponding to this
* descriptor should remove from the address preference.
*/
private AddressPreference preferenceSubtrahend =
new AddressPreference(AddressPreference.MIN_PREF);
/**
* Means no firewall or nat. In the case of a privvate IPv4 address this
* would meand no internet connectivity through this address. The same
* applies to IPv6 link local addresses. In the case of a public (IPv4 or
* IPv6) address this means that there is unlimited connectivity.
*/
public static final int TYPE_OPEN_INTERNET = 1;
/**
* Full cone NAT or firewall.
*/
public static final int TYPE_FULL_CONE = 2;
/**
* Restricted cone NAT or firewall.
*/
public static final int TYPE_RESTRICTED_CONE = 3;
/**
* Port restricted cone NAT or firewall.
*/
public static final int TYPE_PORT_RESTRICTED_CONE = 4;
/**
* Symmetric NAT or firewall.
*/
public static final int TYPE_SYMMETRIC = 5;
/**
* Determines firewall type. Could be one of symmetric, full cone,
* restricted cone, port restricted cone.
*/
private int type = -1;
/**
* The time (in seconds) that address port bindings remain active on this
* firewall without the node sendind any packets. Bindings may and most
* probably will change during runtime. They are initially set to be equal
* to net.java.sip.communicator.service.netaddr.INITIAL_BINDINGS_LIFETIME.
*/
private int bindingsLifetime = 30;
/**
* Indicates whether or not the firewall corresponding to this descriptor
* is also acting as NAT (are we using a globally routable ip address or
* not).
*/
private boolean isTranslatingAddresses = false;
/**
* The public IP address of the firewall. In the case of a NAT this is
* the address that other would have to use to contact us.
*/
private InetAddress publicAddress = null;
/**
* Constructs an empty firewall descirptor
*/
FirewallDescriptor()
{
super();
}
/**
* Set the type of this firewall.
* @param type the type of the firewall referenced by this descriptor.
*/
void setType(int type)
{
this.type = type;
}
/**
* Returns the type of the firewall referenced by this desciptor
* @return the type of the firewall referenced by this desciptor. One of the
* TYPE_XXX fields of this class.
*/
public int getType()
{
return this.type;
}
/**
* Sets the address preference subtrahend corresponding to the firewall
* referenced by this descriptor. The subtrahend is a value that is
* subtracted from AddressPreference-s of addresses behind this firewall.
*
* @param subtrahend the amount of address preference points that need to
* be subtracted from address preferences of oaddresses behind this
* firewall.
*/
void setPreferenceSubtrahend(AddressPreference subtrahend)
{
this.preferenceSubtrahend = subtrahend;
}
/**
* Returns the address preference subtrahend corresponding to the firewall
* referenced by this descriptor. The subtrahend is a value that is
* subtracted from AddressPreference-s of addresses behind this firewall.
*
* @return the amount of address preference points that need to
* be subtracted from address preferences of oaddresses behind this
* firewall.
*/
public AddressPreference getAddressPreferenceSubtrahend()
{
return this.preferenceSubtrahend;
}
/**
* Sets the public IP address of the firewall. In the case of a NAT this is
* the address that others would have to use to contact us.
*
* @param address the ip address of the nat
*/
void setPublicAddress(InetAddress address)
{
this.publicAddress = address;
}
/**
* Returns the public IP address of the firewall. In the case of a NAT this
* is the address that others would have to use to contact us.
*
* @return the ip address of the nat
*/
public InetAddress getPublicAddress()
{
return this.publicAddress;
}
/**
* Sets the time (in seconds) that address port bindings remain active on
* this firewall without the node sendind any packets. Bindings may and most
* probably will change during runtime. They are initially set to be equal
* to net.java.sip.communicator.service.netaddr.INITIAL_BINDINGS_LIFETIME.
*
* @param lifetime the number of seconds that bindings on this firewall
* remain active
*/
void setBindingsLifetime(int lifetime)
{
this.bindingsLifetime = lifetime;
}
/**
* Returns the time (in seconds) that address port bindings remain active on
* this firewall without the node sendind any packets. Bindings may and most
* probably will change during runtime. They are initially set to be equal
* to net.java.sip.communicator.service.netaddr.INITIAL_BINDINGS_LIFETIME.
*
* @return lifetime the number of seconds that bindings on this firewall
* remain active
*/
public int getBindingsLifetime()
{
return this.bindingsLifetime;
}
/**
* Specifies whether this is an address translating firewall (NAT) or not.
* @param isNAT a boolean specifying whether the firewall referenced by this
* descriptor is a NAT.
*/
void setTranslatingAddresses(boolean isNAT)
{
this.isTranslatingAddresses = isNAT;
}
/**
* Determines whether this is an address translating firewall (NAT) or not.
* @return true if the firewall referenced by this descriptor is a NAT and
* false otherwise.
*/
public boolean isTranslatingAddresses()
{
return isTranslatingAddresses;
}
}
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