001/** 002 * 003 * Copyright © 2014-2020 Florian Schmaus 004 * 005 * Licensed under the Apache License, Version 2.0 (the "License"); 006 * you may not use this file except in compliance with the License. 007 * You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.jivesoftware.smack.packet; 018 019import javax.xml.namespace.QName; 020 021import org.jivesoftware.smack.util.XmlStringBuilder; 022 023public class StartTls implements Nonza { 024 025 public static final StartTls INSTANCE = new StartTls(); 026 027 public static final String ELEMENT = "starttls"; 028 public static final String NAMESPACE = "urn:ietf:params:xml:ns:xmpp-tls"; 029 public static final QName QNAME = new QName(NAMESPACE, ELEMENT); 030 031 private final boolean required; 032 033 public StartTls() { 034 this(false); 035 } 036 037 public StartTls(boolean required) { 038 this.required = required; 039 } 040 041 public boolean required() { 042 return required; 043 } 044 045 @Override 046 public String getElementName() { 047 return ELEMENT; 048 } 049 050 @Override 051 public String getNamespace() { 052 return NAMESPACE; 053 } 054 055 @Override 056 public XmlStringBuilder toXML(org.jivesoftware.smack.packet.XmlEnvironment enclosingNamespace) { 057 XmlStringBuilder xml = new XmlStringBuilder(this, enclosingNamespace); 058 059 if (required) { 060 xml.rightAngleBracket(); 061 xml.emptyElement("required"); 062 xml.closeElement(this); 063 } else { 064 xml.closeEmptyElement(); 065 } 066 067 return xml; 068 } 069 070}