927 lines
34 KiB
Java
927 lines
34 KiB
Java
/**
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*
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* Copyright 2003-2007 Jive Software.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.Set;
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import org.jivesoftware.smack.packet.Session;
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import org.jivesoftware.smack.proxy.ProxyInfo;
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import org.jivesoftware.smack.sasl.SASLMechanism;
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import org.jivesoftware.smack.sasl.core.SASLAnonymous;
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import org.jivesoftware.smack.util.CollectionUtil;
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import org.jivesoftware.smack.util.Objects;
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import org.jivesoftware.smack.util.StringUtils;
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import org.jxmpp.jid.DomainBareJid;
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import org.jxmpp.jid.EntityBareJid;
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import org.jxmpp.jid.impl.JidCreate;
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import org.jxmpp.jid.parts.Resourcepart;
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import org.jxmpp.stringprep.XmppStringprepException;
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import javax.net.SocketFactory;
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import javax.net.ssl.HostnameVerifier;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.X509TrustManager;
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import javax.security.auth.callback.CallbackHandler;
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/**
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* Configuration to use while establishing the connection to the server.
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*
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* @author Gaston Dombiak
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*/
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public abstract class ConnectionConfiguration {
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static {
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// Ensure that Smack is initialized when ConnectionConfiguration is used, or otherwise e.g.
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// SmackConfiguration.DEBUG may not be initialized yet.
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SmackConfiguration.getVersion();
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}
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/**
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* The XMPP domain of the XMPP Service. Usually servers use the same service name as the name
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* of the server. However, there are some servers like google where host would be
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* talk.google.com and the serviceName would be gmail.com.
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*/
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protected final DomainBareJid xmppServiceDomain;
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protected final String host;
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protected final int port;
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private final String keystorePath;
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private final String keystoreType;
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private final String pkcs11Library;
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private final SSLContext customSSLContext;
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/**
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* Used to get information from the user
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*/
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private final CallbackHandler callbackHandler;
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private final boolean debuggerEnabled;
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// Holds the socket factory that is used to generate the socket in the connection
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private final SocketFactory socketFactory;
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private final CharSequence username;
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private final String password;
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private final Resourcepart resource;
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/**
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* The optional SASL authorization identity (see RFC 6120 § 6.3.8).
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*/
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private final EntityBareJid authzid;
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/**
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* Initial presence as of RFC 6121 § 4.2
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* @see <a href="http://xmpp.org/rfcs/rfc6121.html#presence-initial">RFC 6121 § 4.2 Initial Presence</a>
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*/
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private final boolean sendPresence;
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private final boolean legacySessionDisabled;
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private final SecurityMode securityMode;
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private final DnssecMode dnssecMode;
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private final X509TrustManager customX509TrustManager;
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/**
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*
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*/
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private final String[] enabledSSLProtocols;
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/**
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*
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*/
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private final String[] enabledSSLCiphers;
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private final HostnameVerifier hostnameVerifier;
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// Holds the proxy information (such as proxyhost, proxyport, username, password etc)
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protected final ProxyInfo proxy;
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protected final boolean allowNullOrEmptyUsername;
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private final Set<String> enabledSaslMechanisms;
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protected ConnectionConfiguration(Builder<?,?> builder) {
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authzid = builder.authzid;
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username = builder.username;
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password = builder.password;
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callbackHandler = builder.callbackHandler;
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// Resource can be null, this means that the server must provide one
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resource = builder.resource;
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xmppServiceDomain = builder.xmppServiceDomain;
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if (xmppServiceDomain == null) {
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throw new IllegalArgumentException("Must define the XMPP domain");
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}
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host = builder.host;
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port = builder.port;
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proxy = builder.proxy;
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socketFactory = builder.socketFactory;
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dnssecMode = builder.dnssecMode;
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customX509TrustManager = builder.customX509TrustManager;
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securityMode = builder.securityMode;
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keystoreType = builder.keystoreType;
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keystorePath = builder.keystorePath;
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pkcs11Library = builder.pkcs11Library;
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customSSLContext = builder.customSSLContext;
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enabledSSLProtocols = builder.enabledSSLProtocols;
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enabledSSLCiphers = builder.enabledSSLCiphers;
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hostnameVerifier = builder.hostnameVerifier;
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sendPresence = builder.sendPresence;
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legacySessionDisabled = builder.legacySessionDisabled;
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debuggerEnabled = builder.debuggerEnabled;
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allowNullOrEmptyUsername = builder.allowEmptyOrNullUsername;
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enabledSaslMechanisms = builder.enabledSaslMechanisms;
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// If the enabledSaslmechanisms are set, then they must not be empty
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assert(enabledSaslMechanisms != null ? !enabledSaslMechanisms.isEmpty() : true);
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if (dnssecMode != DnssecMode.disabled && customSSLContext != null) {
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throw new IllegalStateException("You can not use a custom SSL context with DNSSEC enabled");
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}
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}
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/**
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* Returns the server name of the target server.
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*
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* @return the server name of the target server.
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* @deprecated use {@link #getXMPPServiceDomain()} instead.
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*/
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@Deprecated
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public DomainBareJid getServiceName() {
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return xmppServiceDomain;
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}
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/**
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* Returns the XMPP domain used by this configuration.
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*
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* @return the XMPP domain.
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*/
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public DomainBareJid getXMPPServiceDomain() {
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return xmppServiceDomain;
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}
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/**
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* Returns the TLS security mode used when making the connection. By default,
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* the mode is {@link SecurityMode#ifpossible}.
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*
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* @return the security mode.
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*/
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public SecurityMode getSecurityMode() {
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return securityMode;
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}
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public DnssecMode getDnssecMode() {
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return dnssecMode;
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}
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public X509TrustManager getCustomX509TrustManager() {
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return customX509TrustManager;
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}
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/**
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* Retuns the path to the keystore file. The key store file contains the
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* certificates that may be used to authenticate the client to the server,
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* in the event the server requests or requires it.
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*
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* @return the path to the keystore file.
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*/
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public String getKeystorePath() {
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return keystorePath;
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}
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/**
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* Returns the keystore type, or <tt>null</tt> if it's not set.
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*
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* @return the keystore type.
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*/
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public String getKeystoreType() {
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return keystoreType;
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}
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/**
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* Returns the PKCS11 library file location, needed when the
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* Keystore type is PKCS11.
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*
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* @return the path to the PKCS11 library file
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*/
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public String getPKCS11Library() {
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return pkcs11Library;
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}
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/**
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* Gets the custom SSLContext previously set with {@link ConnectionConfiguration.Builder#setCustomSSLContext(SSLContext)} for
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* SSL sockets. This is null by default.
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*
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* @return the custom SSLContext or null.
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*/
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public SSLContext getCustomSSLContext() {
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return this.customSSLContext;
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}
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/**
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* Return the enabled SSL/TLS protocols.
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*
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* @return the enabled SSL/TLS protocols
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*/
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public String[] getEnabledSSLProtocols() {
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return enabledSSLProtocols;
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}
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/**
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* Return the enabled SSL/TLS ciphers.
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*
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* @return the enabled SSL/TLS ciphers
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*/
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public String[] getEnabledSSLCiphers() {
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return enabledSSLCiphers;
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}
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/**
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* Returns the configured HostnameVerifier of this ConnectionConfiguration or the Smack default
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* HostnameVerifier configured with
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* {@link SmackConfiguration#setDefaultHostnameVerifier(HostnameVerifier)}.
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*
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* @return a configured HostnameVerifier or <code>null</code>
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*/
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public HostnameVerifier getHostnameVerifier() {
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if (hostnameVerifier != null)
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return hostnameVerifier;
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return SmackConfiguration.getDefaultHostnameVerifier();
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}
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/**
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* Returns true if the new connection about to be establish is going to be debugged. By
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* default the value of {@link SmackConfiguration#DEBUG} is used.
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*
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* @return true if the new connection about to be establish is going to be debugged.
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*/
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public boolean isDebuggerEnabled() {
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return debuggerEnabled;
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}
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/**
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* Returns true if a {@link Session} will be requested on login if the server
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* supports it. Although this was mandatory on RFC 3921, RFC 6120/6121 don't
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* even mention this part of the protocol.
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*
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* @return true if a session has to be requested when logging in.
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* @deprecated Smack processes the 'optional' element of the session stream feature.
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* @see Builder#setLegacySessionDisabled(boolean)
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*/
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@Deprecated
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public boolean isLegacySessionDisabled() {
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return legacySessionDisabled;
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}
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/**
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* Returns a CallbackHandler to obtain information, such as the password or
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* principal information during the SASL authentication. A CallbackHandler
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* will be used <b>ONLY</b> if no password was specified during the login while
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* using SASL authentication.
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*
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* @return a CallbackHandler to obtain information, such as the password or
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* principal information during the SASL authentication.
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*/
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public CallbackHandler getCallbackHandler() {
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return callbackHandler;
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}
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/**
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* Returns the socket factory used to create new xmppConnection sockets.
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* This is useful when connecting through SOCKS5 proxies.
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*
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* @return socketFactory used to create new sockets.
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*/
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public SocketFactory getSocketFactory() {
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return this.socketFactory;
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}
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/**
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* Get the configured proxy information (if any).
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*
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* @return the configured proxy information or <code>null</code>.
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*/
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public ProxyInfo getProxyInfo() {
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return proxy;
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}
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/**
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* An enumeration for TLS security modes that are available when making a connection
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* to the XMPP server.
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*/
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public static enum SecurityMode {
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/**
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* Security via TLS encryption is required in order to connect. If the server
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* does not offer TLS or if the TLS negotiation fails, the connection to the server
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* will fail.
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*/
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required,
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/**
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* Security via TLS encryption is used whenever it's available. This is the
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* default setting.
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* <p>
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* <b>Do not use this setting</b> unless you can't use {@link #required}. An attacker could easily perform a
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* Man-in-the-middle attack and prevent TLS from being used, leaving you with an unencrypted (and
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* unauthenticated) connection.
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* </p>
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*/
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ifpossible,
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/**
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* Security via TLS encryption is disabled and only un-encrypted connections will
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* be used. If only TLS encryption is available from the server, the connection
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* will fail.
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*/
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disabled
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}
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/**
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* Determines the requested DNSSEC security mode.
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* <b>Note that Smack's support for DNSSEC/DANE is experimental!</b>
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* <p>
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* The default '{@link #disabled}' means that neither DNSSEC nor DANE verification will be performed. When
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* '{@link #needsDnssec}' is used, then the connection will not be established if the resource records used to connect
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* to the XMPP service are not authenticated by DNSSEC. Additionally, if '{@link #needsDnssecAndDane}' is used, then
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* the XMPP service's TLS certificate is verified using DANE.
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*
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*/
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public enum DnssecMode {
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/**
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* Do not perform any DNSSEC authentication or DANE verification.
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*/
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disabled,
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/**
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* <b>Experimental!</b>
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* Require all DNS information to be authenticated by DNSSEC.
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*/
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needsDnssec,
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/**
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* <b>Experimental!</b>
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* Require all DNS information to be authenticated by DNSSEC and require the XMPP service's TLS certificate to be verified using DANE.
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*/
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needsDnssecAndDane,
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}
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/**
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* Returns the username to use when trying to reconnect to the server.
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*
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* @return the username to use when trying to reconnect to the server.
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*/
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public CharSequence getUsername() {
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return this.username;
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}
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/**
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* Returns the password to use when trying to reconnect to the server.
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*
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* @return the password to use when trying to reconnect to the server.
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*/
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public String getPassword() {
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return this.password;
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}
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/**
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* Returns the resource to use when trying to reconnect to the server.
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*
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* @return the resource to use when trying to reconnect to the server.
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*/
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public Resourcepart getResource() {
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return resource;
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}
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/**
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* Returns the optional XMPP address to be requested as the SASL authorization identity.
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*
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* @return the authorization identifier.
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* @see <a href="http://tools.ietf.org/html/rfc6120#section-6.3.8">RFC 6120 § 6.3.8. Authorization Identity</a>
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* @since 4.2
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*/
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public EntityBareJid getAuthzid() {
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return authzid;
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}
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/**
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* Returns true if an available presence should be sent when logging in while reconnecting.
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*
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* @return true if an available presence should be sent when logging in while reconnecting
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*/
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public boolean isSendPresence() {
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return sendPresence;
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}
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/**
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* Returns true if the connection is going to use stream compression. Stream compression
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* will be requested after TLS was established (if TLS was enabled) and only if the server
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* offered stream compression. With stream compression network traffic can be reduced
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* up to 90%. By default compression is disabled.
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*
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* @return true if the connection is going to use stream compression.
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*/
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public boolean isCompressionEnabled() {
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// Compression for non-TCP connections is always disabled
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return false;
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}
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/**
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* Check if the given SASL mechansism is enabled in this connection configuration.
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*
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* @param saslMechanism
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* @return true if the given SASL mechanism is enabled, false otherwise.
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*/
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public boolean isEnabledSaslMechanism(String saslMechanism) {
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// If enabledSaslMechanisms is not set, then all mechanisms are enabled per default
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if (enabledSaslMechanisms == null) {
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return true;
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}
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return enabledSaslMechanisms.contains(saslMechanism);
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}
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public Set<String> getEnabledSaslMechanisms() {
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return Collections.unmodifiableSet(enabledSaslMechanisms);
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}
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/**
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* A builder for XMPP connection configurations.
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* <p>
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* This is an abstract class that uses the builder design pattern and the "getThis() trick" to recover the type of
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* the builder in a class hierarchies with a self-referential generic supertype. Otherwise chaining of build
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* instructions from the superclasses followed by build instructions of a sublcass would not be possible, because
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* the superclass build instructions would return the builder of the superclass and not the one of the subclass. You
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* can read more about it a Angelika Langer's Generics FAQ, especially the entry <a
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* href="http://www.angelikalanger.com/GenericsFAQ/FAQSections/ProgrammingIdioms.html#FAQ206">What is the
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* "getThis()" trick?</a>.
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* </p>
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*
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* @param <B> the builder type parameter.
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* @param <C> the resulting connection configuration type parameter.
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*/
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public static abstract class Builder<B extends Builder<B, C>, C extends ConnectionConfiguration> {
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private SecurityMode securityMode = SecurityMode.ifpossible;
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private DnssecMode dnssecMode = DnssecMode.disabled;
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private String keystorePath = System.getProperty("javax.net.ssl.keyStore");
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private String keystoreType = "jks";
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private String pkcs11Library = "pkcs11.config";
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private SSLContext customSSLContext;
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private String[] enabledSSLProtocols;
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private String[] enabledSSLCiphers;
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private HostnameVerifier hostnameVerifier;
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private EntityBareJid authzid;
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private CharSequence username;
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private String password;
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private Resourcepart resource;
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private boolean sendPresence = true;
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private boolean legacySessionDisabled = false;
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private ProxyInfo proxy;
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private CallbackHandler callbackHandler;
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private boolean debuggerEnabled = SmackConfiguration.DEBUG;
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private SocketFactory socketFactory;
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private DomainBareJid xmppServiceDomain;
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private String host;
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private int port = 5222;
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private boolean allowEmptyOrNullUsername = false;
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private boolean saslMechanismsSealed;
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private Set<String> enabledSaslMechanisms;
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private X509TrustManager customX509TrustManager;
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protected Builder() {
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}
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/**
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* Set the XMPP entities username and password.
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* <p>
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* The username is usually the localpart of the clients JID. But some SASL mechanisms or services may require a different
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* format (e.g. the full JID) as used authorization identity.
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* </p>
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*
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* @param username the username or authorization identity
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* @param password the password or token used to authenticate
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* @return a reference to this builder.
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*/
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public B setUsernameAndPassword(CharSequence username, String password) {
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this.username = username;
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this.password = password;
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return getThis();
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}
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/**
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* Set the XMPP domain. The XMPP domain is what follows after the '@' sign in XMPP addresses (JIDs).
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*
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* @param serviceName the service name
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* @return a reference to this builder.
|
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* @deprecated use {@link #setXmppDomain(DomainBareJid)} instead.
|
|
*/
|
|
@Deprecated
|
|
public B setServiceName(DomainBareJid serviceName) {
|
|
return setXmppDomain(serviceName);
|
|
}
|
|
|
|
/**
|
|
* Set the XMPP domain. The XMPP domain is what follows after the '@' sign in XMPP addresses (JIDs).
|
|
*
|
|
* @param xmppDomain the XMPP domain.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setXmppDomain(DomainBareJid xmppDomain) {
|
|
this.xmppServiceDomain = xmppDomain;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the XMPP domain. The XMPP domain is what follows after the '@' sign in XMPP addresses (JIDs).
|
|
*
|
|
* @param xmppServiceDomain the XMPP domain.
|
|
* @return a reference to this builder.
|
|
* @throws XmppStringprepException if the given string is not a domain bare JID.
|
|
*/
|
|
public B setXmppDomain(String xmppServiceDomain) throws XmppStringprepException {
|
|
this.xmppServiceDomain = JidCreate.domainBareFrom(xmppServiceDomain);
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the resource to use.
|
|
* <p>
|
|
* If <code>resource</code> is <code>null</code>, then the server will automatically create a resource for the
|
|
* client. Default resource is "Smack".
|
|
* </p>
|
|
*
|
|
* @param resource the resource to use.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setResource(Resourcepart resource) {
|
|
this.resource = resource;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the resource to use.
|
|
*
|
|
* @param resource the non-null CharSequence to use a resource.
|
|
* @return a reference ot this builder.
|
|
* @throws XmppStringprepException if the CharSequence is not a valid resourcepart.
|
|
* @see #setResource(Resourcepart)
|
|
*/
|
|
public B setResource(CharSequence resource) throws XmppStringprepException {
|
|
Objects.requireNonNull(resource, "resource must not be null");
|
|
return setResource(Resourcepart.from(resource.toString()));
|
|
}
|
|
|
|
public B setHost(String host) {
|
|
this.host = host;
|
|
return getThis();
|
|
}
|
|
|
|
public B setPort(int port) {
|
|
this.port = port;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets a CallbackHandler to obtain information, such as the password or
|
|
* principal information during the SASL authentication. A CallbackHandler
|
|
* will be used <b>ONLY</b> if no password was specified during the login while
|
|
* using SASL authentication.
|
|
*
|
|
* @param callbackHandler to obtain information, such as the password or
|
|
* principal information during the SASL authentication.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setCallbackHandler(CallbackHandler callbackHandler) {
|
|
this.callbackHandler = callbackHandler;
|
|
return getThis();
|
|
}
|
|
|
|
public B setDnssecMode(DnssecMode dnssecMode) {
|
|
this.dnssecMode = Objects.requireNonNull(dnssecMode, "DNSSEC mode must not be null");
|
|
return getThis();
|
|
}
|
|
|
|
public B setCustomX509TrustManager(X509TrustManager x509TrustManager) {
|
|
this.customX509TrustManager = x509TrustManager;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets the TLS security mode used when making the connection. By default,
|
|
* the mode is {@link SecurityMode#ifpossible}.
|
|
*
|
|
* @param securityMode the security mode.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setSecurityMode(SecurityMode securityMode) {
|
|
this.securityMode = securityMode;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets the path to the keystore file. The key store file contains the
|
|
* certificates that may be used to authenticate the client to the server,
|
|
* in the event the server requests or requires it.
|
|
*
|
|
* @param keystorePath the path to the keystore file.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setKeystorePath(String keystorePath) {
|
|
this.keystorePath = keystorePath;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets the keystore type.
|
|
*
|
|
* @param keystoreType the keystore type.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setKeystoreType(String keystoreType) {
|
|
this.keystoreType = keystoreType;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets the PKCS11 library file location, needed when the
|
|
* Keystore type is PKCS11.
|
|
*
|
|
* @param pkcs11Library the path to the PKCS11 library file.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setPKCS11Library(String pkcs11Library) {
|
|
this.pkcs11Library = pkcs11Library;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets a custom SSLContext for creating SSL sockets.
|
|
* <p>
|
|
* For more information on how to create a SSLContext see <a href=
|
|
* "http://docs.oracle.com/javase/8/docs/technotes/guides/security/jsse/JSSERefGuide.html#X509TrustManager"
|
|
* >Java Secure Socket Extension (JSEE) Reference Guide: Creating Your Own X509TrustManager</a>
|
|
*
|
|
* @param context the custom SSLContext for new sockets.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setCustomSSLContext(SSLContext context) {
|
|
this.customSSLContext = Objects.requireNonNull(context, "The SSLContext must not be null");
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the enabled SSL/TLS protocols.
|
|
*
|
|
* @param enabledSSLProtocols
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setEnabledSSLProtocols(String[] enabledSSLProtocols) {
|
|
this.enabledSSLProtocols = enabledSSLProtocols;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the enabled SSL/TLS ciphers.
|
|
*
|
|
* @param enabledSSLCiphers the enabled SSL/TLS ciphers
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setEnabledSSLCiphers(String[] enabledSSLCiphers) {
|
|
this.enabledSSLCiphers = enabledSSLCiphers;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the HostnameVerifier used to verify the hostname of SSLSockets used by XMPP connections
|
|
* created with this ConnectionConfiguration.
|
|
*
|
|
* @param verifier
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setHostnameVerifier(HostnameVerifier verifier) {
|
|
hostnameVerifier = verifier;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets if a {@link Session} will be requested on login if the server supports
|
|
* it. Although this was mandatory on RFC 3921, RFC 6120/6121 don't even
|
|
* mention this part of the protocol.
|
|
* <p>
|
|
* Deprecation notice: This setting is no longer required in most cases because Smack processes the 'optional'
|
|
* element eventually found in the session stream feature. See also <a
|
|
* href="https://tools.ietf.org/html/draft-cridland-xmpp-session-01">Here Lies Extensible Messaging and Presence
|
|
* Protocol (XMPP) Session Establishment</a>
|
|
* </p>
|
|
*
|
|
* @param legacySessionDisabled if a session has to be requested when logging in.
|
|
* @return a reference to this builder.
|
|
* @deprecated Smack processes the 'optional' element of the session stream feature.
|
|
*/
|
|
@Deprecated
|
|
public B setLegacySessionDisabled(boolean legacySessionDisabled) {
|
|
this.legacySessionDisabled = legacySessionDisabled;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets if an initial available presence will be sent to the server. By default
|
|
* an available presence will be sent to the server indicating that this presence
|
|
* is not online and available to receive messages. If you want to log in without
|
|
* being 'noticed' then pass a <tt>false</tt> value.
|
|
*
|
|
* @param sendPresence true if an initial available presence will be sent while logging in.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setSendPresence(boolean sendPresence) {
|
|
this.sendPresence = sendPresence;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets if the new connection about to be establish is going to be debugged. By
|
|
* default the value of {@link SmackConfiguration#DEBUG} is used.
|
|
*
|
|
* @param debuggerEnabled if the new connection about to be establish is going to be debugged.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setDebuggerEnabled(boolean debuggerEnabled) {
|
|
this.debuggerEnabled = debuggerEnabled;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Sets the socket factory used to create new xmppConnection sockets.
|
|
* This is useful when connecting through SOCKS5 proxies.
|
|
*
|
|
* @param socketFactory used to create new sockets.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setSocketFactory(SocketFactory socketFactory) {
|
|
this.socketFactory = socketFactory;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the information about the Proxy used for the connection.
|
|
*
|
|
* @param proxyInfo the Proxy information.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B setProxyInfo(ProxyInfo proxyInfo) {
|
|
this.proxy = proxyInfo;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Allow <code>null</code> or the empty String as username.
|
|
*
|
|
* Some SASL mechanisms (e.g. SASL External) may also signal the username (as "authorization identity"), in
|
|
* which case Smack should not throw an IllegalArgumentException when the username is not set.
|
|
*
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B allowEmptyOrNullUsernames() {
|
|
allowEmptyOrNullUsername = true;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Perform anonymous authentication using SASL ANONYMOUS. Your XMPP service must support this authentication
|
|
* mechanism. This method also calls {@link #addEnabledSaslMechanism(String)} with "ANONYMOUS" as argument.
|
|
*
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B performSaslAnonymousAuthentication() {
|
|
if (!SASLAuthentication.isSaslMechanismRegistered(SASLAnonymous.NAME)) {
|
|
throw new IllegalArgumentException("SASL " + SASLAnonymous.NAME + " is not registered");
|
|
}
|
|
throwIfEnabledSaslMechanismsSet();
|
|
|
|
allowEmptyOrNullUsernames();
|
|
addEnabledSaslMechanism(SASLAnonymous.NAME);
|
|
saslMechanismsSealed = true;
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Perform authentication using SASL EXTERNAL. Your XMPP service must support this
|
|
* authentication mechanism. This method also calls {@link #addEnabledSaslMechanism(String)} with "EXTERNAL" as
|
|
* argument. It also calls {@link #allowEmptyOrNullUsernames()} and {@link #setSecurityMode(ConnectionConfiguration.SecurityMode)} to
|
|
* {@link SecurityMode#required}.
|
|
*
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B performSaslExternalAuthentication(SSLContext sslContext) {
|
|
if (!SASLAuthentication.isSaslMechanismRegistered(SASLMechanism.EXTERNAL)) {
|
|
throw new IllegalArgumentException("SASL " + SASLMechanism.EXTERNAL + " is not registered");
|
|
}
|
|
setCustomSSLContext(sslContext);
|
|
throwIfEnabledSaslMechanismsSet();
|
|
|
|
allowEmptyOrNullUsernames();
|
|
setSecurityMode(SecurityMode.required);
|
|
addEnabledSaslMechanism(SASLMechanism.EXTERNAL);
|
|
saslMechanismsSealed = true;
|
|
return getThis();
|
|
}
|
|
|
|
private void throwIfEnabledSaslMechanismsSet() {
|
|
if (enabledSaslMechanisms != null) {
|
|
throw new IllegalStateException("Enabled SASL mechanisms found");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add the given mechanism to the enabled ones. See {@link #addEnabledSaslMechanism(Collection)} for a discussion about enabled SASL mechanisms.
|
|
*
|
|
* @param saslMechanism the name of the mechanism to enable.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B addEnabledSaslMechanism(String saslMechanism) {
|
|
return addEnabledSaslMechanism(Arrays.asList(StringUtils.requireNotNullOrEmpty(saslMechanism,
|
|
"saslMechanism must not be null or empty")));
|
|
}
|
|
|
|
/**
|
|
* Enable the given SASL mechanisms. If you never add a mechanism to the set of enabled ones, <b>all mechanisms
|
|
* known to Smack</b> will be enabled. Only explicitly enable particular SASL mechanisms if you want to limit
|
|
* the used mechanisms to the enabled ones.
|
|
*
|
|
* @param saslMechanisms a collection of names of mechanisms to enable.
|
|
* @return a reference to this builder.
|
|
*/
|
|
public B addEnabledSaslMechanism(Collection<String> saslMechanisms) {
|
|
if (saslMechanismsSealed) {
|
|
throw new IllegalStateException("The enabled SASL mechanisms are sealed, you can not add new ones");
|
|
}
|
|
CollectionUtil.requireNotEmpty(saslMechanisms, "saslMechanisms");
|
|
Set<String> blacklistedMechanisms = SASLAuthentication.getBlacklistedSASLMechanisms();
|
|
for (String mechanism : saslMechanisms) {
|
|
if (!SASLAuthentication.isSaslMechanismRegistered(mechanism)) {
|
|
throw new IllegalArgumentException("SASL " + mechanism + " is not avaiable. Consider registering it with Smack");
|
|
}
|
|
if (blacklistedMechanisms.contains(mechanism)) {
|
|
throw new IllegalArgumentException("SALS " + mechanism + " is blacklisted.");
|
|
}
|
|
}
|
|
if (enabledSaslMechanisms == null) {
|
|
enabledSaslMechanisms = new HashSet<>(saslMechanisms.size());
|
|
}
|
|
enabledSaslMechanisms.addAll(saslMechanisms);
|
|
return getThis();
|
|
}
|
|
|
|
/**
|
|
* Set the XMPP address to be used as authorization identity.
|
|
* <p>
|
|
* In XMPP, authorization identities are bare jids. In general, callers should allow the server to select the
|
|
* authorization identifier automatically, and not call this. Note that setting the authzid does not set the XMPP
|
|
* service domain, which should typically match.
|
|
* Calling this will also SASL CRAM, since this mechanism does not support authzid.
|
|
* </p>
|
|
*
|
|
* @param authzid The BareJid to be requested as the authorization identifier.
|
|
* @return a reference to this builder.
|
|
* @see <a href="http://tools.ietf.org/html/rfc6120#section-6.3.8">RFC 6120 § 6.3.8. Authorization Identity</a>
|
|
* @since 4.2
|
|
*/
|
|
public B setAuthzid(EntityBareJid authzid) {
|
|
this.authzid = authzid;
|
|
return getThis();
|
|
}
|
|
|
|
public abstract C build();
|
|
|
|
protected abstract B getThis();
|
|
}
|
|
}
|