final Account caller = ctx.getCallingAccount();
Long networkId = null;
// make sure ip address exists
final PublicIpAddress ipAddr = _networkMgr.getPublicIpAddress(publicIpId);
if (ipAddr == null) {
throw new InvalidParameterValueException("Unable to create remote access vpn, invalid public IP address id" + publicIpId);
}
_accountMgr.checkAccess(caller, null, true, ipAddr);
if (!ipAddr.readyToUse()) {
throw new InvalidParameterValueException("The Ip address is not ready to be used yet: " + ipAddr.getAddress());
}
IPAddressVO ipAddress = _ipAddressDao.findById(publicIpId);
networkId = ipAddress.getAssociatedWithNetworkId();
if (networkId != null) {
_networkMgr.checkIpForService(ipAddress, Service.Vpn, null);
}
final Long vpcId = ipAddress.getVpcId();
/* IP Address used for VPC must be the source NAT IP of whole VPC */
if (vpcId != null && ipAddress.isSourceNat()) {
assert networkId == null;
// No firewall setting for VPC, it would be open internally
openFirewall = false;
}
final boolean openFirewallFinal = openFirewall;
if (networkId == null && vpcId == null) {
throw new InvalidParameterValueException("Unable to create remote access vpn for the ipAddress: " + ipAddr.getAddress().addr() +
" as ip is not associated with any network or VPC");
}
RemoteAccessVpnVO vpnVO = _remoteAccessVpnDao.findByPublicIpAddress(publicIpId);
if (vpnVO != null) {
//if vpn is in Added state, return it to the api
if (vpnVO.getState() == RemoteAccessVpn.State.Added) {
return vpnVO;
}
throw new InvalidParameterValueException("A Remote Access VPN already exists for this public Ip address");
}
if (ipRange == null) {
ipRange = RemoteAccessVpnClientIpRange.valueIn(ipAddr.getAccountId());
}
final String[] range = ipRange.split("-");
if (range.length != 2) {
throw new InvalidParameterValueException("Invalid ip range");
}
if (!NetUtils.isValidIp(range[0]) || !NetUtils.isValidIp(range[1])) {
throw new InvalidParameterValueException("Invalid ip in range specification " + ipRange);
}
if (!NetUtils.validIpRange(range[0], range[1])) {
throw new InvalidParameterValueException("Invalid ip range " + ipRange);
}
Pair<String, Integer> cidr = null;
// TODO: assumes one virtual network / domr per account per zone
if (networkId != null) {
vpnVO = _remoteAccessVpnDao.findByAccountAndNetwork(ipAddr.getAccountId(), networkId);
if (vpnVO != null) {
//if vpn is in Added state, return it to the api
if (vpnVO.getState() == RemoteAccessVpn.State.Added) {
return vpnVO;
}
throw new InvalidParameterValueException("A Remote Access VPN already exists for this account");
}
//Verify that vpn service is enabled for the network
Network network = _networkMgr.getNetwork(networkId);
if (!_networkMgr.areServicesSupportedInNetwork(network.getId(), Service.Vpn)) {
throw new InvalidParameterValueException("Vpn service is not supported in network id=" + ipAddr.getAssociatedWithNetworkId());
}
cidr = NetUtils.getCidr(network.getCidr());
} else { // Don't need to check VPC because there is only one IP(source NAT IP) available for VPN
Vpc vpc = _vpcDao.findById(vpcId);
cidr = NetUtils.getCidr(vpc.getCidr());
}
// FIXME: This check won't work for the case where the guest ip range
// changes depending on the vlan allocated.
String[] guestIpRange = NetUtils.getIpRangeFromCidr(cidr.first(), cidr.second());
if (NetUtils.ipRangesOverlap(range[0], range[1], guestIpRange[0], guestIpRange[1])) {
throw new InvalidParameterValueException("Invalid ip range: " + ipRange + " overlaps with guest ip range " + guestIpRange[0] + "-" + guestIpRange[1]);
}
// TODO: check sufficient range
// TODO: check overlap with private and public ip ranges in datacenter
long startIp = NetUtils.ip2Long(range[0]);
final String newIpRange = NetUtils.long2Ip(++startIp) + "-" + range[1];
final String sharedSecret = PasswordGenerator.generatePresharedKey(_pskLength);
return Transaction.execute(new TransactionCallbackWithException<RemoteAccessVpn, NetworkRuleConflictException>() {
@Override
public RemoteAccessVpn doInTransaction(TransactionStatus status) throws NetworkRuleConflictException {
if (vpcId == null) {
_rulesMgr.reservePorts(ipAddr, NetUtils.UDP_PROTO, Purpose.Vpn, openFirewallFinal, caller, NetUtils.VPN_PORT, NetUtils.VPN_L2TP_PORT,
NetUtils.VPN_NATT_PORT);
}
RemoteAccessVpnVO vpnVO =
new RemoteAccessVpnVO(ipAddr.getAccountId(), ipAddr.getDomainId(), ipAddr.getAssociatedWithNetworkId(), publicIpId, vpcId, range[0], newIpRange,
sharedSecret);
if (forDisplay != null) {
vpnVO.setDisplay(forDisplay);
}