// protected Timer reaper;
/**
* Instantiates a new binding pool.
*
* @param pool the pool
*
* @throws DhcpServerConfigException if the PrefixPool definition is invalid
*/
public V6PrefixBindingPool(v6PrefixPool pool)
{
try
{
this.pool = pool;
allocPrefixLen = pool.prefixLength;
string[] cidr = pool.range.Split('/');
if ((cidr == null) || (cidr.Length != 2))
{
throw new Exception(
"Prefix pool must be specified in prefix/len notation");
}
subnet = new Subnet(cidr[0], cidr[1]);
if (allocPrefixLen < subnet.GetPrefixLength())
{
throw new Exception(
"Allocation prefix length must be greater or equal to pool prefix length");
}
int numPrefixes = (int)Math.Pow(2, (allocPrefixLen - subnet.GetPrefixLength()));
freeList = new FreeList(new BigInteger(0),
new BigInteger(numPrefixes) - new BigInteger(1));
//reaper = new Timer(pool.getRange() + "_Reaper");
dhcpConfigOptions = new DhcpV6ConfigOptions(pool.prefixConfigOptions);
}
catch (Exception ex)
{
log.Error("Invalid PrefixPool definition");
throw new Exception("Invalid PrefixPool definition", ex);
}
}
/**
* Builds a binding pool from an PrefixPool using the given link and filter.
*
* @param pool the AddressPool to wrap as an PrefixBindingPool
* @param link the link
* @param linkFilter the link filter
*
* @return the binding pool
*
* @throws DhcpServerConfigException if there is a problem parsing the configured range
*/
protected V6PrefixBindingPool BuildV6BindingPool(v6PrefixPool pool, link link,
linkFilter linkFilter)
{
V6PrefixBindingPool bp = new V6PrefixBindingPool(pool);
long pLifetime =
DhcpServerPolicies.EffectivePolicyAsLong(bp, link, Property.PREFERRED_LIFETIME);
bp.SetPreferredLifetime(pLifetime);
long vLifetime =
DhcpServerPolicies.EffectivePolicyAsLong(bp, link, Property.VALID_LIFETIME);
bp.SetValidLifetime(vLifetime);
bp.SetLinkFilter(linkFilter);
List <IPAddress> usedIps = iaMgr.FindExistingIPs(bp.GetStartAddress(), bp.GetEndAddress());
if ((usedIps != null) && usedIps.Count > 0)
{
foreach (IPAddress ip in usedIps)
{
//TODO: for the quickest startup?...
// set IP as used without checking if the binding has expired
// let the reaper thread deal with all binding cleanup activity
bp.SetUsed(ip);
}
}
log.Info("Built prefix binding pool: " + bp.GetStartAddress().ToString() + "-" +
bp.GetEndAddress().ToString() + ", size=" + bp.GetSize());
return(bp);
}
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);
}
/**
* Sets the pool.
*
* @param pool the new pool
*/
public void SetV6PrefixPool(v6PrefixPool pool)
{
this.pool = pool;
}
/**
* Builds a binding pool from an PrefixPool using the given link.
*
* @param pool the PrefixPool to wrap as an PrefixBindingPool
* @param link the link
*
* @return the binding pool
*
* @throws DhcpServerConfigException if there is a problem parsing the configured range
*/
protected V6PrefixBindingPool BuildV6BindingPool(v6PrefixPool pool, link link)
{
return(BuildV6BindingPool(pool, link, null));
}
