Validate network domain in upateNetwork command

server/src/com/cloud/network/NetworkManagerImpl.java

@@ -2893,6 +2893,14 @@ public class NetworkManagerImpl implements NetworkManager, NetworkService, Manag
         
         //don't allow to modify network domain if the service is not supported
         if (domainSuffix != null) {
+            // validate network domain
+            if (!NetUtils.verifyDomainName(domainSuffix)) {
+                throw new InvalidParameterValueException(
+                        "Invalid network domain. Total length shouldn't exceed 190 chars. Each domain label must be between 1 and 63 characters long, can contain ASCII letters 'a' through 'z', the digits '0' through '9', "
+                        + "and the hyphen ('-'); can't start or end with \"-\"");
+            }
+            
+            
             Map<Network.Capability, String> dnsCapabilities = getServiceCapabilities(network.getDataCenterId(), network.getNetworkOfferingId(), Service.Dns);
             String isUpdateDnsSupported = dnsCapabilities.get(Capability.AllowDnsSuffixModification);
             if (isUpdateDnsSupported == null || !Boolean.valueOf(isUpdateDnsSupported)) {