/**
* Tries to renew an IP lease.
*
* @param {@code byte[]}: The IP address on which to try and renew a lease
* @param {@code long}: The time in seconds for which the lease will be valid
* @return {@code DHCPBinding}: True on success, false if unknown IP address
*/
public boolean renewLease(IPv4Address ip, int time) {
DHCPBinding binding = this.getDHCPbindingFromIPv4(ip);
if (binding != null) {
binding.setLeaseStartTimeSeconds();
binding.setLeaseDurationSeconds(time);
binding.setLeaseStatus(true);
return true;
}
return false;
}
/**
* Assigns a MAC address to the IP address of the DHCPBinding object in the DHCPPool object. This
* method also sets the lease to active (i.e. true) when the assignment is made.
*
* @param {@code DHCPBinding} binding: The DHCPBinding object in which to set the MAC
* @param {@code byte[]} mac: The MAC address to set in the DHCPBinding object
* @param {@code long}: The time in seconds for which the lease will be valid
* @return none
*/
public void setDHCPbinding(DHCPBinding binding, MacAddress mac, int time) {
int index = DHCP_POOL.indexOf(binding);
binding.setMACAddress(mac);
binding.setLeaseStatus(true);
this.setPoolAvailability(this.getPoolAvailability() - 1);
DHCP_POOL.set(index, binding);
if (this.getPoolAvailability() == 0) setPoolFull(true);
binding.setLeaseStartTimeSeconds();
binding.setLeaseDurationSeconds(time);
}
/**
* Used to set a particular IP binding in the pool as a fixed/static IP lease. This method does
* not set the lease as active, but instead reserves that IP for only the MAC provided. To set the
* lease as active, the methods getAnyAvailableLease() or getSpecificAvailableLease() will return
* the correct binding given the same MAC provided to this method is used to bind the lease later
* on.
*
* @param {@code byte[]}: The IP address to set as static/fixed.
* @param {@code byte[]}: The MAC address to match to the IP address ip when an address is
* requested from the MAC mac
* @return {@code boolean}: True upon success; false upon failure (e.g. no IP found)
*/
public boolean configureFixedIPLease(IPv4Address ip, MacAddress mac) {
DHCPBinding binding = this.getDHCPbindingFromIPv4(ip);
if (binding != null) {
binding.setMACAddress(mac);
binding.setStaticIPLease(true);
binding.setLeaseStatus(false);
return true;
} else {
return false;
}
}
/**
* Cancel an IP lease.
*
* @param {@code byte[]}: The MAC address on which to try and cancel a lease
* @return {@code boolean}: True on success, false if unknown IP address
*/
public boolean cancelLeaseOfMAC(MacAddress mac) {
DHCPBinding binding = getDHCPbindingFromMAC(mac);
if (binding != null) {
binding.clearLeaseTimes();
binding.setLeaseStatus(false);
this.setPoolAvailability(this.getPoolAvailability() + 1);
this.setPoolFull(false);
return true;
}
return false;
}
/**
* Cancel an IP lease.
*
* @param {@code byte[]}: The IP address on which to try and cancel a lease
* @return {@code boolean}: True on success, false if unknown IP address
*/
public boolean cancelLeaseOfIPv4(IPv4Address ip) {
DHCPBinding binding = this.getDHCPbindingFromIPv4(ip);
if (binding != null) {
binding.clearLeaseTimes();
binding.setLeaseStatus(false);
this.setPoolAvailability(this.getPoolAvailability() + 1);
this.setPoolFull(false);
return true;
}
return false;
}