private V4BindingAddress BuildV4StaticBindingFromIaAddr(IaAddress iaAddr,
StaticBinding staticBinding)
{
V4BindingAddress bindingAddr = new V4BindingAddress(iaAddr, staticBinding);
return(bindingAddr);
}
protected override BindingObject BuildBindingObject(IPAddress inetAddr,
DhcpLink clientLink, DhcpMessage requestMsg)
{
V4AddressBindingPool bp =
(V4AddressBindingPool)FindBindingPool(clientLink.GetLink(), inetAddr, requestMsg);
if (bp != null)
{
bp.SetUsed(inetAddr); // TODO check if this is necessary
IaAddress iaAddr = new IaAddress();
iaAddr.SetIpAddress(inetAddr);
V4BindingAddress bindingAddr = new V4BindingAddress(iaAddr, bp);
SetBindingObjectTimes(bindingAddr,
bp.GetPreferredLifetimeMs(), bp.GetPreferredLifetimeMs());
// TODO store the configured options in the persisted binding?
// bindingAddr.setDhcpOptions(bp.getDhcpOptions());
return(bindingAddr);
}
else
{
log.Error("Failed to create V4BindingAddress: No V4BindingPool found for IP=" +
inetAddr.ToString());
}
// MUST have a BindingPool, otherwise something's broke
return(null);
}
/**
* Create a Binding given an IdentityAssoc loaded from the database.
*
* @param ia the ia
* @param clientLink the client link
* @param requestMsg the request msg
*
* @return the binding
*/
protected override Binding BuildBindingFromIa(IdentityAssoc ia, DhcpLink clientLink,
DhcpMessage requestMsg)
{
Binding binding = new Binding(ia, clientLink);
List <IaAddress> iaAddrs = ia.GetIaAddresses();
if ((iaAddrs != null) && iaAddrs.Count > 0)
{
List <IaAddress> bindingAddrs = new List <IaAddress>();
foreach (IaAddress iaAddr in iaAddrs)
{
if (!clientLink.GetSubnet().Contains(iaAddr.GetIpAddress()))
{
log.Info("Ignoring off-link binding address: " +
iaAddr.GetIpAddress().ToString());
continue;
}
V4BindingAddress bindingAddr = null;
StaticBinding staticBinding =
FindStaticBinding(clientLink.GetLink(), ia.GetDuid(),
ia.GetIatype(), ia.GetIaid(), requestMsg);
if (staticBinding != null)
{
bindingAddr =
BuildV4StaticBindingFromIaAddr(iaAddr, staticBinding);
}
else
{
bindingAddr =
BuildV4BindingAddressFromIaAddr(iaAddr, clientLink.GetLink(), requestMsg);
}
if (bindingAddr != null)
{
bindingAddrs.Add(bindingAddr);
}
}
// replace the collection of IaAddresses with BindingAddresses
binding.SetIaAddresses(bindingAddrs);
}
else
{
log.Warn("IA has no addresses, binding is empty.");
}
return(binding);
}
/// <summary>
/// Perform the DDNS delete processing when a lease is released or expired.
/// </summary>
/// <param name="ia">iaAddr the released or expired IaAddress </param>
/// <param name="iaAddr">iaAddr the released or expired IaAddress </param>
protected override void DdnsDelete(IdentityAssoc ia, IaAddress iaAddr)
{
DhcpV4ClientFqdnOption clientFqdnOption = null;
try
{
if ((ia != null) && (iaAddr != null))
{
List <DhcpOption> opts = iaAddr.GetDhcpOptions();
if (opts != null)
{
foreach (DhcpOption opt in opts)
{
if (opt.GetCode() == DhcpConstants.V4OPTION_CLIENT_FQDN)
{
clientFqdnOption = new DhcpV4ClientFqdnOption();
//clientFqdnOption.Decode(ByteBuffer.wrap(opt.GetValue()));
break;
}
}
}
if (clientFqdnOption != null)
{
string fqdn = clientFqdnOption.GetDomainName();
if ((fqdn != null) && fqdn.Count() > 0)
{
DhcpLink link = serverConfig.FindLinkForAddress(iaAddr.GetIpAddress());
if (link != null)
{
V4BindingAddress bindingAddr = null;
StaticBinding staticBinding =
FindStaticBinding(link.GetLink(), ia.GetDuid(),
ia.GetIatype(), ia.GetIaid(), null);
if (staticBinding != null)
{
bindingAddr =
BuildV4StaticBindingFromIaAddr(iaAddr, staticBinding);
}
else
{
bindingAddr =
BuildV4BindingAddressFromIaAddr(iaAddr, link.GetLink(), null); // safe to send null requestMsg
}
if (bindingAddr != null)
{
//DdnsCallback ddnsComplete =
// new DhcpV4DdnsComplete(bindingAddr, clientFqdnOption);
//DhcpConfigObject configObj = bindingAddr.getConfigObj();
//DdnsUpdater ddns =
// new DdnsUpdater(link.getLink(), configObj,
// bindingAddr.getIpAddress(), fqdn, ia.getDuid(),
// configObj.getValidLifetime(),
// clientFqdnOption.getUpdateABit(), true,
// ddnsComplete);
//ddns.processUpdates();
}
else
{
log.Error("Failed to find binding for address: " +
iaAddr.GetIpAddress().ToString());
}
}
else
{
log.Error("Failed to find link for binding address: " +
iaAddr.GetIpAddress().ToString());
}
}
else
{
log.Error("FQDN is null or empty. No DDNS deletes performed.");
}
}
else
{
log.Warn("No Client FQDN option in current binding. No DDNS deletes performed.");
}
}
}
catch (Exception ex)
{
log.Error("Failed to perform DDNS delete");
}
}