public Binding(IdentityAssoc ia, DhcpLink dhcpLink)
{
this.origIa = ia;
// save a reference to the original IA
this.SetDhcpOptions(ia.GetDhcpOptions());
this.SetDuid(ia.GetDuid());
this.SetIaAddresses(ia.GetIaAddresses());
this.SetIaid(ia.GetIaid());
this.SetIatype(ia.GetIatype());
this.SetId(ia.GetId());
this.SetState(ia.GetState());
this.dhcpLink = dhcpLink;
}
/// <summary>
/// Checks if the duid-iatype-iaid tuple matches the given IA.
/// </summary>
/// <param name="duid">DUID</param>
/// <param name="iatype">IA type</param>
/// <param name="iaid">IAID</param>
/// <param name="ia">IA</param>
/// <returns>true, if is my ia</returns>
protected bool IsMyIa(byte[] duid, byte iatype, long iaid, IdentityAssoc ia)
{
bool rc = false;
if (duid != null)
{
if (Array.Equals(ia.GetDuid(), duid) &&
(ia.GetIatype() == iatype) &&
(ia.GetIaid() == iaid))
{
rc = true;
}
}
return(rc);
}
/**
* 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);
}
/**
* Perform the DDNS delete processing when a lease is released or expired.
*
* @param ia the IdentityAssoc of the client
* @param iaAddr the released or expired IaAddress
*/
protected override void DdnsDelete(IdentityAssoc ia, IaAddress iaAddr)
{
DhcpV6ClientFqdnOption 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.V6OPTION_CLIENT_FQDN)
{
clientFqdnOption = new DhcpV6ClientFqdnOption();
//clientFqdnOption.Decode(ByteBuffer.Wrap(opt.GetValue()));
break;
}
}
}
if (clientFqdnOption != null)
{
string fqdn = clientFqdnOption.GetDomainName();
if (!String.IsNullOrEmpty(fqdn))
{
DhcpLink link = serverConfig.FindLinkForAddress(iaAddr.GetIpAddress());
if (link != null)
{
V6BindingAddress bindingAddr = null;
StaticBinding staticBinding =
FindStaticBinding(link.GetLink(), ia.GetDuid(),
ia.GetIatype(), ia.GetIaid(), null);
if (staticBinding != null)
{
bindingAddr =
BuildV6StaticBindingFromIaAddr(iaAddr, staticBinding);
}
else
{
bindingAddr =
BuildV6BindingAddressFromIaAddr(iaAddr, link, null); // safe to send null requestMsg
}
if (bindingAddr != null)
{
DdnsCallback ddnsComplete =
new DhcpV6DdnsComplete(bindingAddr, clientFqdnOption);
DhcpConfigObject configObj = bindingAddr.GetConfigObj();
DdnsUpdater ddns =
new DdnsUpdater(link.GetLink(), configObj,
bindingAddr.GetIpAddress(), fqdn, ia.GetDuid(),
configObj.GetValidLifetime(),
clientFqdnOption.GetUpdateAaaaBit(), 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");
}
}
/**
* 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> iaPrefs = ia.GetIaAddresses();
if ((iaPrefs != null) && iaPrefs.Count > 0)
{
List <IaAddress> bindingPrefixes = new List <IaAddress>();
foreach (IaAddress iaAddr in iaPrefs)
{
// off-link check needed only for v4?
// if (!clientLink.getSubnet().contains(iaAddr.getIpAddress())) {
// log.info("Ignoring off-link binding address: " +
// iaAddr.getIpAddress().getHostAddress());
// continue;
// }
V6BindingPrefix bindingPrefix = null;
StaticBinding staticBinding = FindStaticBinding(clientLink.GetLink(), ia.GetDuid(), ia.GetIatype(), ia.GetIaid(), requestMsg);
if (staticBinding != null)
{
bindingPrefix =
BuildV6BindingPrefixFromIaPrefix((IaPrefix)iaAddr, staticBinding);
}
else
{
bindingPrefix =
BuildBindingAddrFromIaPrefix((IaPrefix)iaAddr, clientLink.GetLink(), requestMsg);
}
if (bindingPrefix != null)
{
bindingPrefixes.Add(bindingPrefix);
}
}
// replace the collection of IaPrefixes with BindingPrefixes
binding.SetIaAddresses(bindingPrefixes);
}
else
{
log.Warn("IA has no prefixes, binding is empty.");
}
return(binding);
}