public Binding FindCurrentBinding(DhcpLink clientLink, DhcpV6ClientIdOption clientIdOption,
DhcpV6IaPdOption iaPdOption, DhcpMessage requestMsg)
{
byte[] duid = clientIdOption.GetDuid();
long iaid = iaPdOption.GetIaId();
return(base.FindCurrentBinding(clientLink, duid, IdentityAssoc.PD_TYPE,
iaid, requestMsg));
}
/**
* Extract the list of IP addresses from within the given IA_PD option.
*
* @param iaNaOption the IA_PD option
*
* @return the list of InetAddresses for the IPs in the IA_PD option
*/
private List <IPAddress> GetInetAddrs(DhcpV6IaPdOption iaPdOption)
{
List <IPAddress> inetAddrs = null;
List <DhcpV6IaPrefixOption> iaPrefs = iaPdOption.GetIaPrefixOptions();
if ((iaPrefs != null) && iaPrefs.Count > 0)
{
inetAddrs = new List <IPAddress>();
foreach (DhcpV6IaPrefixOption iaPrefix in iaPrefs)
{
IPAddress inetAddr = iaPrefix.GetInetAddress();
inetAddrs.Add(inetAddr);
}
}
return(inetAddrs);
}
public Binding CreateSolicitBinding(DhcpLink clientLink, DhcpV6ClientIdOption clientIdOption,
DhcpV6IaPdOption iaPdOption, DhcpMessage requestMsg, byte state, IPAddress clientV4IPAddress)
{
byte[] duid = clientIdOption.GetDuid();
long iaid = iaPdOption.GetIaId();
StaticBinding staticBinding =
FindStaticBinding(clientLink.GetLink(), duid, IdentityAssoc.PD_TYPE, iaid, requestMsg);
if (staticBinding != null)
{
return(base.CreateStaticBinding(clientLink, duid, IdentityAssoc.PD_TYPE,
iaid, staticBinding, requestMsg));
}
else
{
return(base.CreateBinding(clientLink, duid, IdentityAssoc.PD_TYPE,
iaid, GetInetAddrs(iaPdOption), requestMsg, state, clientV4IPAddress));
}
}
protected bool AllIaPrefixesOnLink(DhcpV6IaPdOption dhcpIaPdOption, DhcpLink clientLink)
{
bool onLink = true;
// assume all IPs are on link
if ((dhcpIaPdOption != null))
{
List <DhcpV6IaPrefixOption> iaPrefixOpts = dhcpIaPdOption.GetIaPrefixOptions();
if ((iaPrefixOpts != null))
{
foreach (DhcpV6IaPrefixOption iaPrefixOpt in iaPrefixOpts)
{
if (this.clientLink.GetSubnet().GetSubnetAddress().IsIPv6LinkLocal)
{
// if the Link address is link-local, then check if the
// address is within one of the pools configured for this
// local Link, which automatically makes this server
// "authoritative" (in ISC parlance) for this local net
v6PrefixPool p = DhcpServerConfiguration.FindPrefixPool(this.clientLink.GetLink(), iaPrefixOpt.GetInetAddress());
if ((p == null))
{
log.Info(("No local prefix pool found for requested IA_PD: "
+ (iaPrefixOpt.GetInetAddress().ToString() + " - considered to be off link")));
iaPrefixOpt.SetPreferredLifetime(0);
iaPrefixOpt.SetValidLifetime(0);
onLink = false;
}
}
else if (!this.clientLink.GetSubnet().Contains(iaPrefixOpt.GetInetAddress()))
{
log.Info(("Setting zero(0) lifetimes for off link prefix: " + iaPrefixOpt.GetInetAddress().ToString()));
iaPrefixOpt.SetPreferredLifetime(0);
iaPrefixOpt.SetValidLifetime(0);
onLink = false;
}
}
}
}
return(onLink);
}
