ConnectionConfiguration.java
/**
*
* Copyright 2003-2007 Jive Software, 2017-2022 Florian Schmaus.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jivesoftware.smack;
import java.io.ByteArrayInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.nio.charset.StandardCharsets;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;
import java.security.Provider;
import java.security.SecureRandom;
import java.security.Security;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.net.SocketFactory;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.KeyManager;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import org.jivesoftware.smack.datatypes.UInt16;
import org.jivesoftware.smack.debugger.SmackDebuggerFactory;
import org.jivesoftware.smack.internal.SmackTlsContext;
import org.jivesoftware.smack.packet.id.StandardStanzaIdSource;
import org.jivesoftware.smack.packet.id.StanzaIdSource;
import org.jivesoftware.smack.packet.id.StanzaIdSourceFactory;
import org.jivesoftware.smack.proxy.ProxyInfo;
import org.jivesoftware.smack.sasl.SASLMechanism;
import org.jivesoftware.smack.sasl.core.SASLAnonymous;
import org.jivesoftware.smack.util.CloseableUtil;
import org.jivesoftware.smack.util.CollectionUtil;
import org.jivesoftware.smack.util.DNSUtil;
import org.jivesoftware.smack.util.Objects;
import org.jivesoftware.smack.util.SslContextFactory;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smack.util.TLSUtils;
import org.jivesoftware.smack.util.dns.SmackDaneProvider;
import org.jivesoftware.smack.util.dns.SmackDaneVerifier;
import org.jxmpp.jid.DomainBareJid;
import org.jxmpp.jid.EntityBareJid;
import org.jxmpp.jid.impl.JidCreate;
import org.jxmpp.jid.parts.Resourcepart;
import org.jxmpp.stringprep.XmppStringprepException;
import org.minidns.dnsname.DnsName;
import org.minidns.dnsname.InvalidDnsNameException;
import org.minidns.util.InetAddressUtil;
/**
* The connection configuration used for XMPP client-to-server connections. A well configured XMPP service will
* typically only require you to provide two parameters: The XMPP address, also known as the JID, of the user and the
* password. All other configuration parameters could ideally be determined automatically by Smack. Hence it is often
* enough to call {@link Builder#setXmppAddressAndPassword(CharSequence, String)}.
* <p>
* Technically there are typically at least two parameters required: Some kind of credentials for authentication. And
* the XMPP service domain. The credentials often consists of a username and password use for the SASL authentication.
* But there are also other authentication mechanisms, like client side certificates, which do not require a particular
* username and password.
* </p>
* <p>
* There are some misconceptions about XMPP client-to-server parameters: The first is that the username used for
* authentication will be equal to the localpart of the bound XMPP address after authentication. While this is usually
* true, it is not required. Technically the username used for authentication and the resulting XMPP address are
* completely independent from each other. The second common misconception steers from the terms "XMPP host" and "XMPP
* service domain": An XMPP service host is a system which hosts one or multiple XMPP domains. The "XMPP service domain"
* will be usually the domainpart of the bound JID. This domain is used to verify the remote endpoint, typically using
* TLS. This third misconception is that the XMPP service domain is required to become the domainpart of the bound JID.
* Again, while this is very common to be true, it is not strictly required.
* </p>
*
* @author Gaston Dombiak
* @author Florian Schmaus
*/
public abstract class ConnectionConfiguration {
static {
Smack.ensureInitialized();
}
private static final Logger LOGGER = Logger.getLogger(ConnectionConfiguration.class.getName());
/**
* The XMPP domain of the XMPP Service. Usually servers use the same service name as the name
* of the server. However, there are some servers like google where host would be
* talk.google.com and the serviceName would be gmail.com.
*/
protected final DomainBareJid xmppServiceDomain;
protected final DnsName xmppServiceDomainDnsName;
protected final InetAddress hostAddress;
protected final DnsName host;
protected final UInt16 port;
/**
* Used to get information from the user
*/
private final CallbackHandler callbackHandler;
private final SmackDebuggerFactory debuggerFactory;
// Holds the socket factory that is used to generate the socket in the connection
private final SocketFactory socketFactory;
private final CharSequence username;
private final String password;
private final Resourcepart resource;
private final Locale language;
/**
* The optional SASL authorization identity (see RFC 6120 § 6.3.8).
*/
private final EntityBareJid authzid;
/**
* Initial presence as of RFC 6121 § 4.2
* @see <a href="http://xmpp.org/rfcs/rfc6121.html#presence-initial">RFC 6121 § 4.2 Initial Presence</a>
*/
private final boolean sendPresence;
private final SecurityMode securityMode;
final SmackTlsContext smackTlsContext;
private final DnssecMode dnssecMode;
/**
*
*/
private final String[] enabledSSLProtocols;
/**
*
*/
private final String[] enabledSSLCiphers;
private final HostnameVerifier hostnameVerifier;
// Holds the proxy information (such as proxyhost, proxyport, username, password etc)
protected final ProxyInfo proxy;
protected final boolean allowNullOrEmptyUsername;
private final Set<String> enabledSaslMechanisms;
private final boolean compressionEnabled;
private final StanzaIdSourceFactory stanzaIdSourceFactory;
protected ConnectionConfiguration(Builder<?, ?> builder) {
try {
smackTlsContext = getSmackTlsContext(builder.dnssecMode, builder.sslContextFactory,
builder.customX509TrustManager, builder.keyManagers, builder.sslContextSecureRandom, builder.keystoreType, builder.keystorePath,
builder.callbackHandler, builder.pkcs11Library);
} catch (UnrecoverableKeyException | KeyManagementException | NoSuchAlgorithmException | CertificateException
| KeyStoreException | NoSuchProviderException | IOException | NoSuchMethodException
| SecurityException | ClassNotFoundException | InstantiationException | IllegalAccessException
| IllegalArgumentException | InvocationTargetException | UnsupportedCallbackException e) {
throw new IllegalArgumentException(e);
}
authzid = builder.authzid;
username = builder.username;
password = builder.password;
callbackHandler = builder.callbackHandler;
// Resource can be null, this means that the server must provide one
resource = builder.resource;
language = builder.language;
xmppServiceDomain = builder.xmppServiceDomain;
if (xmppServiceDomain == null) {
throw new IllegalArgumentException("Must define the XMPP domain");
}
DnsName xmppServiceDomainDnsName;
try {
xmppServiceDomainDnsName = DnsName.from(xmppServiceDomain);
} catch (InvalidDnsNameException e) {
LOGGER.log(Level.INFO,
"Could not transform XMPP service domain '" + xmppServiceDomain
+ "' to a DNS name. TLS X.509 certificate validiation may not be possible.",
e);
xmppServiceDomainDnsName = null;
}
this.xmppServiceDomainDnsName = xmppServiceDomainDnsName;
hostAddress = builder.hostAddress;
host = builder.host;
port = builder.port;
proxy = builder.proxy;
socketFactory = builder.socketFactory;
dnssecMode = builder.dnssecMode;
securityMode = builder.securityMode;
enabledSSLProtocols = builder.enabledSSLProtocols;
enabledSSLCiphers = builder.enabledSSLCiphers;
hostnameVerifier = builder.hostnameVerifier;
sendPresence = builder.sendPresence;
debuggerFactory = builder.debuggerFactory;
allowNullOrEmptyUsername = builder.allowEmptyOrNullUsername;
enabledSaslMechanisms = builder.enabledSaslMechanisms;
compressionEnabled = builder.compressionEnabled;
stanzaIdSourceFactory = builder.stanzaIdSourceFactory;
// If the enabledSaslmechanisms are set, then they must not be empty
assert enabledSaslMechanisms == null || !enabledSaslMechanisms.isEmpty();
}
private static SmackTlsContext getSmackTlsContext(DnssecMode dnssecMode, SslContextFactory sslContextFactory,
X509TrustManager trustManager, KeyManager[] keyManagers, SecureRandom secureRandom, String keystoreType, String keystorePath,
CallbackHandler callbackHandler, String pkcs11Library) throws NoSuchAlgorithmException,
CertificateException, IOException, KeyStoreException, NoSuchProviderException,
UnrecoverableKeyException, KeyManagementException, UnsupportedCallbackException,
NoSuchMethodException, SecurityException, ClassNotFoundException, InstantiationException,
IllegalAccessException, IllegalArgumentException, InvocationTargetException {
final SSLContext context;
if (sslContextFactory != null) {
context = sslContextFactory.createSslContext();
} else {
// If the user didn't specify a SslContextFactory, use the default one
context = SSLContext.getInstance("TLS");
}
// TODO: Remove the block below once we removed setKeystorePath(), setKeystoreType(), setCallbackHanlder() and
// setPKCS11Library() in the builder, and all related fields and the parameters of this function.
if (keyManagers == null) {
keyManagers = Builder.getKeyManagersFrom(keystoreType, keystorePath, callbackHandler, pkcs11Library);
}
SmackDaneVerifier daneVerifier = null;
if (dnssecMode == DnssecMode.needsDnssecAndDane) {
SmackDaneProvider daneProvider = DNSUtil.getDaneProvider();
if (daneProvider == null) {
throw new UnsupportedOperationException("DANE enabled but no SmackDaneProvider configured");
}
daneVerifier = daneProvider.newInstance();
if (daneVerifier == null) {
throw new IllegalStateException("DANE requested but DANE provider did not return a DANE verifier");
}
// User requested DANE verification.
daneVerifier.init(context, keyManagers, trustManager, secureRandom);
} else {
final TrustManager[] trustManagers;
if (trustManager != null) {
trustManagers = new TrustManager[] { trustManager };
} else {
// Ensure trustManagers is null in case there was no explicit trust manager provided, so that the
// default one is used.
trustManagers = null;
}
context.init(keyManagers, trustManagers, secureRandom);
}
return new SmackTlsContext(context, daneVerifier);
}
public String getHostString() {
if (hostAddress != null) {
return hostAddress.toString();
}
if (host != null) {
return host.toString();
}
return xmppServiceDomain.toString();
}
public DnsName getHost() {
return host;
}
public InetAddress getHostAddress() {
return hostAddress;
}
public UInt16 getPort() {
return port;
}
/**
* Returns the server name of the target server.
*
* @return the server name of the target server.
* @deprecated use {@link #getXMPPServiceDomain()} instead.
*/
@Deprecated
public DomainBareJid getServiceName() {
return xmppServiceDomain;
}
/**
* Returns the XMPP domain used by this configuration.
*
* @return the XMPP domain.
*/
public DomainBareJid getXMPPServiceDomain() {
return xmppServiceDomain;
}
/**
* Returns the XMPP service domain as DNS name if possible. Note that since not every XMPP address domainpart is a
* valid DNS name, this method may return <code>null</code>.
*
* @return the XMPP service domain as DNS name or <code>null</code>.
* @since 4.3.4
*/
public DnsName getXmppServiceDomainAsDnsNameIfPossible() {
return xmppServiceDomainDnsName;
}
/**
* Returns the TLS security mode used when making the connection. By default,
* the mode is {@link SecurityMode#required}.
*
* @return the security mode.
*/
public SecurityMode getSecurityMode() {
return securityMode;
}
public DnssecMode getDnssecMode() {
return dnssecMode;
}
/**
* Return the enabled SSL/TLS protocols.
*
* @return the enabled SSL/TLS protocols
*/
public String[] getEnabledSSLProtocols() {
return enabledSSLProtocols;
}
/**
* Return the enabled SSL/TLS ciphers.
*
* @return the enabled SSL/TLS ciphers
*/
public String[] getEnabledSSLCiphers() {
return enabledSSLCiphers;
}
/**
* Returns the configured HostnameVerifier of this ConnectionConfiguration or the Smack default
* HostnameVerifier configured with
* {@link SmackConfiguration#setDefaultHostnameVerifier(HostnameVerifier)}.
*
* @return a configured HostnameVerifier or <code>null</code>
*/
public HostnameVerifier getHostnameVerifier() {
if (hostnameVerifier != null)
return hostnameVerifier;
return SmackConfiguration.getDefaultHostnameVerifier();
}
/**
* Returns the Smack debugger factory.
*
* @return the Smack debugger factory or <code>null</code>
*/
public SmackDebuggerFactory getDebuggerFactory() {
return debuggerFactory;
}
/**
* Returns 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.
*
* @return a CallbackHandler to obtain information, such as the password or
* principal information during the SASL authentication.
*/
public CallbackHandler getCallbackHandler() {
return callbackHandler;
}
/**
* Returns the socket factory used to create new xmppConnection sockets.
* This is useful when connecting through SOCKS5 proxies.
*
* @return socketFactory used to create new sockets.
*/
public SocketFactory getSocketFactory() {
return this.socketFactory;
}
/**
* Get the configured proxy information (if any).
*
* @return the configured proxy information or <code>null</code>.
*/
public ProxyInfo getProxyInfo() {
return proxy;
}
/**
* An enumeration for TLS security modes that are available when making a connection
* to the XMPP server.
*/
public enum SecurityMode {
/**
* Security via TLS encryption is required in order to connect. If the server
* does not offer TLS or if the TLS negotiation fails, the connection to the server
* will fail.
*/
required,
/**
* Security via TLS encryption is used whenever it's available. This is the
* default setting.
* <p>
* <b>Do not use this setting</b> unless you can't use {@link #required}. An attacker could easily perform a
* Man-in-the-middle attack and prevent TLS from being used, leaving you with an unencrypted (and
* unauthenticated) connection.
* </p>
*/
ifpossible,
/**
* Security via TLS encryption is disabled and only un-encrypted connections will
* be used. If only TLS encryption is available from the server, the connection
* will fail.
*/
disabled
}
/**
* Determines the requested DNSSEC security mode.
* <b>Note that Smack's support for DNSSEC/DANE is experimental!</b>
* <p>
* The default '{@link #disabled}' means that neither DNSSEC nor DANE verification will be performed. When
* '{@link #needsDnssec}' is used, then the connection will not be established if the resource records used to connect
* to the XMPP service are not authenticated by DNSSEC. Additionally, if '{@link #needsDnssecAndDane}' is used, then
* the XMPP service's TLS certificate is verified using DANE.
*
*/
public enum DnssecMode {
/**
* Do not perform any DNSSEC authentication or DANE verification.
*/
disabled,
/**
* <b>Experimental!</b>
* Require all DNS information to be authenticated by DNSSEC.
*/
needsDnssec,
/**
* <b>Experimental!</b>
* Require all DNS information to be authenticated by DNSSEC and require the XMPP service's TLS certificate to be verified using DANE.
*/
needsDnssecAndDane,
}
/**
* Returns the username to use when trying to reconnect to the server.
*
* @return the username to use when trying to reconnect to the server.
*/
public CharSequence getUsername() {
return this.username;
}
/**
* Returns the password to use when trying to reconnect to the server.
*
* @return the password to use when trying to reconnect to the server.
*/
public String getPassword() {
return this.password;
}
/**
* Returns the resource to use when trying to reconnect to the server.
*
* @return the resource to use when trying to reconnect to the server.
*/
public Resourcepart getResource() {
return resource;
}
/**
* Returns the stream language to use when connecting to the server.
*
* @return the stream language to use when connecting to the server.
*/
public Locale getLanguage() {
return language;
}
/**
* Returns the xml:lang string of the stream language to use when connecting to the server.
*
* <p>If the developer sets the language to null, this will also return null, leading to
* the removal of the xml:lang tag from the stream. If a Locale("") is configured, this will
* return "", which can be used as an override.</p>
*
* @return the stream language to use when connecting to the server.
*/
public String getXmlLang() {
// TODO: Change to Locale.toLanguageTag() once Smack's minimum Android API level is 21 or higher.
// This will need a workaround for new Locale("").getLanguageTag() returning "und". Expected
// behavior of this function:
// - returns null if language is null
// - returns "" if language.getLanguage() returns the empty string
// - returns language.toLanguageTag() otherwise
return language != null ? language.toString().replace("_", "-") : null;
}
/**
* Returns the optional XMPP address to be requested as the SASL authorization identity.
*
* @return the authorization identifier.
* @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 EntityBareJid getAuthzid() {
return authzid;
}
/**
* Returns true if an available presence should be sent when logging in while reconnecting.
*
* @return true if an available presence should be sent when logging in while reconnecting
*/
public boolean isSendPresence() {
return sendPresence;
}
/**
* Returns true if the connection is going to use stream compression. Stream compression
* will be requested after TLS was established (if TLS was enabled) and only if the server
* offered stream compression. With stream compression network traffic can be reduced
* up to 90%. By default compression is disabled.
*
* @return true if the connection is going to use stream compression.
*/
public boolean isCompressionEnabled() {
return compressionEnabled;
}
/**
* Check if the given SASL mechansism is enabled in this connection configuration.
*
* @param saslMechanism TODO javadoc me please
* @return true if the given SASL mechanism is enabled, false otherwise.
*/
public boolean isEnabledSaslMechanism(String saslMechanism) {
// If enabledSaslMechanisms is not set, then all mechanisms which are not blacklisted are enabled per default.
if (enabledSaslMechanisms == null) {
return !SASLAuthentication.getBlacklistedSASLMechanisms().contains(saslMechanism);
}
return enabledSaslMechanisms.contains(saslMechanism);
}
/**
* Return the explicitly enabled SASL mechanisms. May return <code>null</code> if no SASL mechanisms where
* explicitly enabled, i.e. all SALS mechanisms supported and announced by the service will be considered.
*
* @return the enabled SASL mechanisms or <code>null</code>.
*/
public Set<String> getEnabledSaslMechanisms() {
if (enabledSaslMechanisms == null) {
return null;
}
return Collections.unmodifiableSet(enabledSaslMechanisms);
}
StanzaIdSource constructStanzaIdSource() {
return stanzaIdSourceFactory.constructStanzaIdSource();
}
/**
* A builder for XMPP connection configurations.
* <p>
* This is an abstract class that uses the builder design pattern and the "getThis() trick" to recover the type of
* the builder in a class hierarchies with a self-referential generic supertype. Otherwise chaining of build
* instructions from the superclasses followed by build instructions of a subclass would not be possible, because
* the superclass build instructions would return the builder of the superclass and not the one of the subclass. You
* can read more about it a Angelika Langer's Generics FAQ, especially the entry <a
* href="http://www.angelikalanger.com/GenericsFAQ/FAQSections/ProgrammingIdioms.html#FAQ206">What is the
* "getThis()" trick?</a>.
* </p>
*
* @param <B> the builder type parameter.
* @param <C> the resulting connection configuration type parameter.
*/
public abstract static class Builder<B extends Builder<B, C>, C extends ConnectionConfiguration> {
private SecurityMode securityMode = SecurityMode.required;
private DnssecMode dnssecMode = DnssecMode.disabled;
private KeyManager[] keyManagers;
private SecureRandom sslContextSecureRandom;
private String keystorePath;
private String keystoreType;
private String pkcs11Library = "pkcs11.config";
private SslContextFactory sslContextFactory;
private String[] enabledSSLProtocols;
private String[] enabledSSLCiphers;
private HostnameVerifier hostnameVerifier;
private EntityBareJid authzid;
private CharSequence username;
private String password;
private Resourcepart resource;
private Locale language = Locale.getDefault();
private boolean sendPresence = true;
private ProxyInfo proxy;
private CallbackHandler callbackHandler;
private SmackDebuggerFactory debuggerFactory;
private SocketFactory socketFactory;
private DomainBareJid xmppServiceDomain;
private InetAddress hostAddress;
private DnsName host;
private UInt16 port = UInt16.from(5222);
private boolean allowEmptyOrNullUsername = false;
private boolean saslMechanismsSealed;
private Set<String> enabledSaslMechanisms;
private X509TrustManager customX509TrustManager;
private boolean compressionEnabled = false;
private StanzaIdSourceFactory stanzaIdSourceFactory = new StandardStanzaIdSource.Factory();
protected Builder() {
if (SmackConfiguration.DEBUG) {
enableDefaultDebugger();
}
}
/**
* Convenience method to configure the username, password and XMPP service domain.
*
* @param jid the XMPP address of the user.
* @param password the password of the user.
* @return a reference to this builder.
* @throws XmppStringprepException in case the XMPP address is not valid.
* @see #setXmppAddressAndPassword(EntityBareJid, String)
* @since 4.4.0
*/
public B setXmppAddressAndPassword(CharSequence jid, String password) throws XmppStringprepException {
return setXmppAddressAndPassword(JidCreate.entityBareFrom(jid), password);
}
/**
* Convenience method to configure the username, password and XMPP service domain. The localpart of the provided
* JID is used as username and the domanipart is used as XMPP service domain.
* <p>
* Please note that this does and can not configure the client XMPP address. XMPP services are not required to
* assign bound JIDs where the localpart matches the username and the domainpart matches the verified domainpart.
* Although most services will follow that pattern.
* </p>
*
* @param jid TODO javadoc me please
* @param password TODO javadoc me please
* @return a reference to this builder.
* @since 4.4.0
*/
public B setXmppAddressAndPassword(EntityBareJid jid, String password) {
setUsernameAndPassword(jid.getLocalpart(), password);
return setXmppDomain(jid.asDomainBareJid());
}
/**
* Set the XMPP entities username and password.
* <p>
* The username is usually the localpart of the clients JID. But some SASL mechanisms or services may require a different
* format (e.g. the full JID) as used authorization identity.
* </p>
*
* @param username the username or authorization identity
* @param password the password or token used to authenticate
* @return a reference to this builder.
*/
public B setUsernameAndPassword(CharSequence username, String password) {
this.username = username;
this.password = password;
return getThis();
}
/**
* Set the XMPP domain. The XMPP domain is what follows after the '@' sign in XMPP addresses (JIDs).
*
* @param serviceName the service name
* @return a reference to this builder.
* @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 we are requesting from the server.
* <p>
* If <code>resource</code> is <code>null</code>, the default, then the server will automatically create a
* resource for the client. Note that XMPP clients only suggest this resource to the server. XMPP servers are
* allowed to ignore the client suggested resource and instead assign a completely different
* resource (see RFC 6120 § 7.7.1).
* </p>
*
* @param resource the resource to use.
* @return a reference to this builder.
* @see <a href="https://tools.ietf.org/html/rfc6120#section-7.7.1">RFC 6120 § 7.7.1</a>
*/
public B setResource(Resourcepart resource) {
this.resource = resource;
return getThis();
}
/**
* Set the stream language.
*
* @param language the language to use.
* @return a reference to this builder.
* @see <a href="https://tools.ietf.org/html/rfc6120#section-4.7.4">RFC 6120 § 4.7.4</a>
* @see <a href="https://www.w3.org/TR/xml/#sec-lang-tag">XML 1.0 § 2.12 Language Identification</a>
*/
public B setLanguage(Locale language) {
this.language = language;
return getThis();
}
/**
* Set the resource we are requesting from the server.
*
* @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()));
}
/**
* Set the Internet address of the host providing the XMPP service. If set, then this will overwrite anything
* set via {@link #setHost(CharSequence)}.
*
* @param address the Internet address of the host providing the XMPP service.
* @return a reference to this builder.
* @since 4.2
*/
public B setHostAddress(InetAddress address) {
this.hostAddress = address;
return getThis();
}
/**
* Set the name of the host providing the XMPP service. This method takes DNS names and
* IP addresses.
*
* @param host the DNS name of the host providing the XMPP service.
* @return a reference to this builder.
*/
public B setHost(CharSequence host) {
String fqdnOrIpString = host.toString();
if (InetAddressUtil.isIpAddress(fqdnOrIpString)) {
InetAddress hostInetAddress;
try {
hostInetAddress = InetAddress.getByName(fqdnOrIpString);
}
catch (UnknownHostException e) {
// Should never happen.
throw new AssertionError(e);
}
setHostAddress(hostInetAddress);
} else {
DnsName dnsName = DnsName.from(fqdnOrIpString);
setHost(dnsName);
}
return getThis();
}
/**
* Set the name of the host providing the XMPP service. Note that this method does only allow DNS names and not
* IP addresses. Use {@link #setHostAddress(InetAddress)} if you want to explicitly set the Internet address of
* the host providing the XMPP service.
*
* @param host the DNS name of the host providing the XMPP service.
* @return a reference to this builder.
*/
public B setHost(DnsName host) {
this.host = host;
return getThis();
}
/**
* Set the host to connect to by either its fully qualified domain name (FQDN) or its IP.
*
* @param fqdnOrIp a CharSequence either representing the FQDN or the IP of the host.
* @return a reference to this builder.
* @see #setHost(DnsName)
* @see #setHostAddress(InetAddress)
* @since 4.3.2
* @deprecated use {@link #setHost(CharSequence)} instead.
*/
@Deprecated
// TODO: Remove in Smack 4.5.
public B setHostAddressByNameOrIp(CharSequence fqdnOrIp) {
return setHost(fqdnOrIp);
}
public B setPort(int port) {
if (port < 0 || port > 65535) {
throw new IllegalArgumentException(
"Port must be a 16-bit unsigned integer (i.e. between 0-65535. Port was: " + port);
}
UInt16 portUint16 = UInt16.from(port);
return setPort(portUint16);
}
public B setPort(UInt16 port) {
this.port = Objects.requireNonNull(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.
* @deprecated set a callback-handler aware {@link KeyManager} via {@link #setKeyManager(KeyManager)} or
* {@link #setKeyManagers(KeyManager[])}, created by
* {@link #getKeyManagersFrom(String, String, CallbackHandler, String)}, instead.
*/
// TODO: Remove in Smack 4.6.
@Deprecated
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#required}.
*
* @param securityMode the security mode.
* @return a reference to this builder.
*/
public B setSecurityMode(SecurityMode securityMode) {
this.securityMode = securityMode;
return getThis();
}
/**
* Set the {@link KeyManager}s to initialize the {@link SSLContext} used by Smack to establish the XMPP connection.
*
* @param keyManagers an array of {@link KeyManager}s to initialize the {@link SSLContext} with.
* @return a reference to this builder.
* @since 4.4.5
*/
public B setKeyManagers(KeyManager[] keyManagers) {
this.keyManagers = keyManagers;
return getThis();
}
/**
* Set the {@link KeyManager}s to initialize the {@link SSLContext} used by Smack to establish the XMPP connection.
*
* @param keyManager the {@link KeyManager}s to initialize the {@link SSLContext} with.
* @return a reference to this builder.
* @see #setKeyManagers(KeyManager[])
* @since 4.4.5
*/
public B setKeyManager(KeyManager keyManager) {
KeyManager[] keyManagers = new KeyManager[] { keyManager };
return setKeyManagers(keyManagers);
}
/**
* Set the {@link SecureRandom} used to initialize the {@link SSLContext} used by Smack to establish the XMPP
* connection. Note that you usually do not need (nor want) to set this. Because if the {@link SecureRandom} is
* not explicitly set, Smack will initialize the {@link SSLContext} with <code>null</code> as
* {@link SecureRandom} argument. And all sane {@link SSLContext} implementations will then select a safe secure
* random source by default.
*
* @param secureRandom the {@link SecureRandom} to initialize the {@link SSLContext} with.
* @return a reference to this builder.
* @since 4.4.5
*/
public B setSslContextSecureRandom(SecureRandom secureRandom) {
this.sslContextSecureRandom = secureRandom;
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.
* @deprecated set a keystore-path aware {@link KeyManager} via {@link #setKeyManager(KeyManager)} or
* {@link #setKeyManagers(KeyManager[])}, created by
* {@link #getKeyManagersFrom(String, String, CallbackHandler, String)}, instead.
*/
// TODO: Remove in Smack 4.6.
@Deprecated
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.
* @deprecated set a key-type aware {@link KeyManager} via {@link #setKeyManager(KeyManager)} or
* {@link #setKeyManagers(KeyManager[])}, created by
* {@link #getKeyManagersFrom(String, String, CallbackHandler, String)}, instead.
*/
// TODO: Remove in Smack 4.6.
@Deprecated
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.
* @deprecated set a PKCS11-library aware {@link KeyManager} via {@link #setKeyManager(KeyManager)} or
* {@link #setKeyManagers(KeyManager[])}, created by
* {@link #getKeyManagersFrom(String, String, CallbackHandler, String)}, instead.
*/
// TODO: Remove in Smack 4.6.
@Deprecated
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.
* @deprecated use {@link #setSslContextFactory(SslContextFactory)} instead}.
*/
// TODO: Remove in Smack 4.5.
@Deprecated
public B setCustomSSLContext(SSLContext context) {
return setSslContextFactory(() -> {
return context;
});
}
/**
* 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 sslContextFactory the custom SSLContext for new sockets.
* @return a reference to this builder.
*/
public B setSslContextFactory(SslContextFactory sslContextFactory) {
this.sslContextFactory = Objects.requireNonNull(sslContextFactory, "The provided SslContextFactory must not be null");
return getThis();
}
/**
* Set the enabled SSL/TLS protocols.
*
* @param enabledSSLProtocols TODO javadoc me please
* @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 TODO javadoc me please
* @return a reference to this builder.
*/
public B setHostnameVerifier(HostnameVerifier verifier) {
hostnameVerifier = verifier;
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 <code>false</code> 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();
}
public B enableDefaultDebugger() {
this.debuggerFactory = SmackConfiguration.getDefaultSmackDebuggerFactory();
assert this.debuggerFactory != null;
return getThis();
}
/**
* Set the Smack debugger factory used to construct Smack debuggers.
*
* @param debuggerFactory the Smack debugger factory.
* @return a reference to this builder.
*/
public B setDebuggerFactory(SmackDebuggerFactory debuggerFactory) {
this.debuggerFactory = debuggerFactory;
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}.
*
* @param sslContext custom SSLContext to be used.
* @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.requireNotNullNorEmpty(saslMechanism,
"saslMechanism must not be null nor 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 available. 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();
}
/**
* Sets if the connection is going to use compression (default false).
*
* Compression is only activated if the server offers compression. With compression network
* traffic can be reduced up to 90%. By default compression is disabled.
*
* @param compressionEnabled if the connection is going to use compression on the HTTP level.
* @return a reference to this object.
*/
public B setCompressionEnabled(boolean compressionEnabled) {
this.compressionEnabled = compressionEnabled;
return getThis();
}
/**
* Set the factory for stanza ID sources to use.
*
* @param stanzaIdSourceFactory the factory for stanza ID sources to use.
* @return a reference to this builder.
* @since 4.4
*/
public B setStanzaIdSourceFactory(StanzaIdSourceFactory stanzaIdSourceFactory) {
this.stanzaIdSourceFactory = Objects.requireNonNull(stanzaIdSourceFactory);
return getThis();
}
public abstract C build();
protected abstract B getThis();
public static KeyManager[] getKeyManagersFrom(String keystoreType, String keystorePath,
CallbackHandler callbackHandler, String pkcs11Library)
throws NoSuchMethodException, SecurityException, ClassNotFoundException, KeyStoreException,
NoSuchProviderException, NoSuchAlgorithmException, CertificateException, IOException, InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException, UnsupportedCallbackException, UnrecoverableKeyException {
KeyManager[] keyManagers = null;
KeyStore ks = null;
PasswordCallback pcb = null;
if ("PKCS11".equals(keystoreType)) {
Constructor<?> c = Class.forName("sun.security.pkcs11.SunPKCS11").getConstructor(InputStream.class);
String pkcs11Config = "name = SmartCard\nlibrary = " + pkcs11Library;
ByteArrayInputStream config = new ByteArrayInputStream(pkcs11Config.getBytes(StandardCharsets.UTF_8));
Provider p = (Provider) c.newInstance(config);
Security.addProvider(p);
ks = KeyStore.getInstance("PKCS11", p);
pcb = new PasswordCallback("PKCS11 Password: ", false);
callbackHandler.handle(new Callback[] { pcb });
ks.load(null, pcb.getPassword());
} else if ("Apple".equals(keystoreType)) {
ks = KeyStore.getInstance("KeychainStore", "Apple");
ks.load(null, null);
// pcb = new PasswordCallback("Apple Keychain",false);
// pcb.setPassword(null);
} else if (keystoreType != null) {
ks = KeyStore.getInstance(keystoreType);
if (callbackHandler != null && StringUtils.isNotEmpty(keystorePath)) {
pcb = new PasswordCallback("Keystore Password: ", false);
callbackHandler.handle(new Callback[] { pcb });
ks.load(new FileInputStream(keystorePath), pcb.getPassword());
} else {
InputStream stream = TLSUtils.getDefaultTruststoreStreamIfPossible();
try {
// Note that PKCS12 keystores need a password one some Java platforms. Hence we try the famous
// 'changeit' here. See https://bugs.openjdk.java.net/browse/JDK-8194702
char[] password = "changeit".toCharArray();
try {
ks.load(stream, password);
} finally {
CloseableUtil.maybeClose(stream);
}
} catch (IOException e) {
LOGGER.log(Level.FINE, "KeyStore load() threw, attempting 'jks' fallback", e);
ks = KeyStore.getInstance("jks");
// Open the stream again, so that we read it from the beginning.
stream = TLSUtils.getDefaultTruststoreStreamIfPossible();
try {
ks.load(stream, null);
} finally {
CloseableUtil.maybeClose(stream);
}
}
}
}
if (ks != null) {
String keyManagerFactoryAlgorithm = KeyManagerFactory.getDefaultAlgorithm();
KeyManagerFactory kmf = KeyManagerFactory.getInstance(keyManagerFactoryAlgorithm);
if (kmf != null) {
if (pcb == null) {
kmf.init(ks, null);
} else {
kmf.init(ks, pcb.getPassword());
pcb.clearPassword();
}
keyManagers = kmf.getKeyManagers();
}
}
return keyManagers;
}
}
}