/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.handler.ssl;
import static io.netty.util.internal.ObjectUtil.checkNotNull;
import io.netty.util.internal.UnstableApi;
import java.security.Provider;
import javax.net.ssl.KeyManagerFactory;
import javax.net.ssl.SSLException;
import javax.net.ssl.TrustManagerFactory;
import java.io.File;
import java.io.InputStream;
import java.security.PrivateKey;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLEngine;
/**
* Builder for configuring a new SslContext for creation.
*/
public final class SslContextBuilder {
/**
* Creates a builder for new client-side {@link SslContext}.
*/
public static SslContextBuilder forClient() {
return new SslContextBuilder(false);
}
/**
* Creates a builder for new server-side {@link SslContext}.
*
* @param keyCertChainFile an X.509 certificate chain file in PEM format
* @param keyFile a PKCS#8 private key file in PEM format
* @see #keyManager(File, File)
*/
public static SslContextBuilder forServer(File keyCertChainFile, File keyFile) {
return new SslContextBuilder(true).keyManager(keyCertChainFile, keyFile);
}
/**
* Creates a builder for new server-side {@link SslContext}.
*
* @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format
* @param keyInputStream an input stream for a PKCS#8 private key in PEM format
* @see #keyManager(InputStream, InputStream)
*/
public static SslContextBuilder forServer(InputStream keyCertChainInputStream, InputStream keyInputStream) {
return new SslContextBuilder(true).keyManager(keyCertChainInputStream, keyInputStream);
}
/**
* Creates a builder for new server-side {@link SslContext}.
*
* @param key a PKCS#8 private key
* @param keyCertChain the X.509 certificate chain
* @see #keyManager(PrivateKey, X509Certificate[])
*/
public static SslContextBuilder forServer(PrivateKey key, X509Certificate... keyCertChain) {
return new SslContextBuilder(true).keyManager(key, keyCertChain);
}
/**
* Creates a builder for new server-side {@link SslContext}.
*
* @param keyCertChainFile an X.509 certificate chain file in PEM format
* @param keyFile a PKCS#8 private key file in PEM format
* @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
* password-protected
* @see #keyManager(File, File, String)
*/
public static SslContextBuilder forServer(
File keyCertChainFile, File keyFile, String keyPassword) {
return new SslContextBuilder(true).keyManager(keyCertChainFile, keyFile, keyPassword);
}
/**
* Creates a builder for new server-side {@link SslContext}.
*
* @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format
* @param keyInputStream an input stream for a PKCS#8 private key in PEM format
* @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
* password-protected
* @see #keyManager(InputStream, InputStream, String)
*/
public static SslContextBuilder forServer(
InputStream keyCertChainInputStream, InputStream keyInputStream, String keyPassword) {
return new SslContextBuilder(true).keyManager(keyCertChainInputStream, keyInputStream, keyPassword);
}
/**
* Creates a builder for new server-side {@link SslContext}.
*
* @param key a PKCS#8 private key
* @param keyCertChain the X.509 certificate chain
* @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
* password-protected
* @see #keyManager(File, File, String)
*/
public static SslContextBuilder forServer(
PrivateKey key, String keyPassword, X509Certificate... keyCertChain) {
return new SslContextBuilder(true).keyManager(key, keyPassword, keyCertChain);
}
/**
* Creates a builder for new server-side {@link SslContext}.
*
* @param keyManagerFactory non-{@code null} factory for server's private key
* @see #keyManager(KeyManagerFactory)
*/
public static SslContextBuilder forServer(KeyManagerFactory keyManagerFactory) {
return new SslContextBuilder(true).keyManager(keyManagerFactory);
}
private final boolean forServer;
private SslProvider provider;
private Provider sslContextProvider;
private X509Certificate[] trustCertCollection;
private TrustManagerFactory trustManagerFactory;
private X509Certificate[] keyCertChain;
private PrivateKey key;
private String keyPassword;
private KeyManagerFactory keyManagerFactory;
private Iterable<String> ciphers;
private CipherSuiteFilter cipherFilter = IdentityCipherSuiteFilter.INSTANCE;
private ApplicationProtocolConfig apn;
private long sessionCacheSize;
private long sessionTimeout;
private ClientAuth clientAuth = ClientAuth.NONE;
private String[] protocols;
private boolean startTls;
private boolean enableOcsp;
private SslContextBuilder(boolean forServer) {
this.forServer = forServer;
}
/**
* The {@link SslContext} implementation to use. {@code null} uses the default one.
*/
public SslContextBuilder sslProvider(SslProvider provider) {
this.provider = provider;
return this;
}
/**
* The SSLContext {@link Provider} to use. {@code null} uses the default one. This is only
* used with {@link SslProvider#JDK}.
*/
public SslContextBuilder sslContextProvider(Provider sslContextProvider) {
this.sslContextProvider = sslContextProvider;
return this;
}
/**
* Trusted certificates for verifying the remote endpoint's certificate. The file should
* contain an X.509 certificate collection in PEM format. {@code null} uses the system default.
*/
public SslContextBuilder trustManager(File trustCertCollectionFile) {
try {
return trustManager(SslContext.toX509Certificates(trustCertCollectionFile));
} catch (Exception e) {
throw new IllegalArgumentException("File does not contain valid certificates: "
+ trustCertCollectionFile, e);
}
}
/**
* Trusted certificates for verifying the remote endpoint's certificate. The input stream should
* contain an X.509 certificate collection in PEM format. {@code null} uses the system default.
*/
public SslContextBuilder trustManager(InputStream trustCertCollectionInputStream) {
try {
return trustManager(SslContext.toX509Certificates(trustCertCollectionInputStream));
} catch (Exception e) {
throw new IllegalArgumentException("Input stream does not contain valid certificates.", e);
}
}
/**
* Trusted certificates for verifying the remote endpoint's certificate, {@code null} uses the system default.
*/
public SslContextBuilder trustManager(X509Certificate... trustCertCollection) {
this.trustCertCollection = trustCertCollection != null ? trustCertCollection.clone() : null;
trustManagerFactory = null;
return this;
}
/**
* Trusted manager for verifying the remote endpoint's certificate. {@code null} uses the system default.
*/
public SslContextBuilder trustManager(TrustManagerFactory trustManagerFactory) {
trustCertCollection = null;
this.trustManagerFactory = trustManagerFactory;
return this;
}
/**
* Identifying certificate for this host. {@code keyCertChainFile} and {@code keyFile} may
* be {@code null} for client contexts, which disables mutual authentication.
*
* @param keyCertChainFile an X.509 certificate chain file in PEM format
* @param keyFile a PKCS#8 private key file in PEM format
*/
public SslContextBuilder keyManager(File keyCertChainFile, File keyFile) {
return keyManager(keyCertChainFile, keyFile, null);
}
/**
* Identifying certificate for this host. {@code keyCertChainInputStream} and {@code keyInputStream} may
* be {@code null} for client contexts, which disables mutual authentication.
*
* @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format
* @param keyInputStream an input stream for a PKCS#8 private key in PEM format
*/
public SslContextBuilder keyManager(InputStream keyCertChainInputStream, InputStream keyInputStream) {
return keyManager(keyCertChainInputStream, keyInputStream, null);
}
/**
* Identifying certificate for this host. {@code keyCertChain} and {@code key} may
* be {@code null} for client contexts, which disables mutual authentication.
*
* @param key a PKCS#8 private key
* @param keyCertChain an X.509 certificate chain
*/
public SslContextBuilder keyManager(PrivateKey key, X509Certificate... keyCertChain) {
return keyManager(key, null, keyCertChain);
}
/**
* Identifying certificate for this host. {@code keyCertChainFile} and {@code keyFile} may
* be {@code null} for client contexts, which disables mutual authentication.
*
* @param keyCertChainFile an X.509 certificate chain file in PEM format
* @param keyFile a PKCS#8 private key file in PEM format
* @param keyPassword the password of the {@code keyFile}, or {@code null} if it's not
* password-protected
*/
public SslContextBuilder keyManager(File keyCertChainFile, File keyFile, String keyPassword) {
X509Certificate[] keyCertChain;
PrivateKey key;
try {
keyCertChain = SslContext.toX509Certificates(keyCertChainFile);
} catch (Exception e) {
throw new IllegalArgumentException("File does not contain valid certificates: " + keyCertChainFile, e);
}
try {
key = SslContext.toPrivateKey(keyFile, keyPassword);
} catch (Exception e) {
throw new IllegalArgumentException("File does not contain valid private key: " + keyFile, e);
}
return keyManager(key, keyPassword, keyCertChain);
}
/**
* Identifying certificate for this host. {@code keyCertChainInputStream} and {@code keyInputStream} may
* be {@code null} for client contexts, which disables mutual authentication.
*
* @param keyCertChainInputStream an input stream for an X.509 certificate chain in PEM format
* @param keyInputStream an input stream for a PKCS#8 private key in PEM format
* @param keyPassword the password of the {@code keyInputStream}, or {@code null} if it's not
* password-protected
*/
public SslContextBuilder keyManager(InputStream keyCertChainInputStream, InputStream keyInputStream,
String keyPassword) {
X509Certificate[] keyCertChain;
PrivateKey key;
try {
keyCertChain = SslContext.toX509Certificates(keyCertChainInputStream);
} catch (Exception e) {
throw new IllegalArgumentException("Input stream not contain valid certificates.", e);
}
try {
key = SslContext.toPrivateKey(keyInputStream, keyPassword);
} catch (Exception e) {
throw new IllegalArgumentException("Input stream does not contain valid private key.", e);
}
return keyManager(key, keyPassword, keyCertChain);
}
/**
* Identifying certificate for this host. {@code keyCertChain} and {@code key} may
* be {@code null} for client contexts, which disables mutual authentication.
*
* @param key a PKCS#8 private key file
* @param keyPassword the password of the {@code key}, or {@code null} if it's not
* password-protected
* @param keyCertChain an X.509 certificate chain
*/
public SslContextBuilder keyManager(PrivateKey key, String keyPassword, X509Certificate... keyCertChain) {
if (forServer) {
checkNotNull(keyCertChain, "keyCertChain required for servers");
if (keyCertChain.length == 0) {
throw new IllegalArgumentException("keyCertChain must be non-empty");
}
checkNotNull(key, "key required for servers");
}
if (keyCertChain == null || keyCertChain.length == 0) {
this.keyCertChain = null;
} else {
for (X509Certificate cert: keyCertChain) {
if (cert == null) {
throw new IllegalArgumentException("keyCertChain contains null entry");
}
}
this.keyCertChain = keyCertChain.clone();
}
this.key = key;
this.keyPassword = keyPassword;
keyManagerFactory = null;
return this;
}
/**
* Identifying manager for this host. {@code keyManagerFactory} may be {@code null} for
* client contexts, which disables mutual authentication. Using a {@link KeyManagerFactory}
* is only supported for {@link SslProvider#JDK} or {@link SslProvider#OPENSSL} / {@link SslProvider#OPENSSL_REFCNT}
* if the used openssl version is 1.0.1+. You can check if your openssl version supports using a
* {@link KeyManagerFactory} by calling {@link OpenSsl#supportsKeyManagerFactory()}. If this is not the case
* you must use {@link #keyManager(File, File)} or {@link #keyManager(File, File, String)}.
*/
public SslContextBuilder keyManager(KeyManagerFactory keyManagerFactory) {
if (forServer) {
checkNotNull(keyManagerFactory, "keyManagerFactory required for servers");
}
keyCertChain = null;
key = null;
keyPassword = null;
this.keyManagerFactory = keyManagerFactory;
return this;
}
/**
* The cipher suites to enable, in the order of preference. {@code null} to use default
* cipher suites.
*/
public SslContextBuilder ciphers(Iterable<String> ciphers) {
return ciphers(ciphers, IdentityCipherSuiteFilter.INSTANCE);
}
/**
* The cipher suites to enable, in the order of preference. {@code cipherFilter} will be
* applied to the ciphers before use. If {@code ciphers} is {@code null}, then the default
* cipher suites will be used.
*/
public SslContextBuilder ciphers(Iterable<String> ciphers, CipherSuiteFilter cipherFilter) {
checkNotNull(cipherFilter, "cipherFilter");
this.ciphers = ciphers;
this.cipherFilter = cipherFilter;
return this;
}
/**
* Application protocol negotiation configuration. {@code null} disables support.
*/
public SslContextBuilder applicationProtocolConfig(ApplicationProtocolConfig apn) {
this.apn = apn;
return this;
}
/**
* Set the size of the cache used for storing SSL session objects. {@code 0} to use the
* default value.
*/
public SslContextBuilder sessionCacheSize(long sessionCacheSize) {
this.sessionCacheSize = sessionCacheSize;
return this;
}
/**
* Set the timeout for the cached SSL session objects, in seconds. {@code 0} to use the
* default value.
*/
public SslContextBuilder sessionTimeout(long sessionTimeout) {
this.sessionTimeout = sessionTimeout;
return this;
}
/**
* Sets the client authentication mode.
*/
public SslContextBuilder clientAuth(ClientAuth clientAuth) {
this.clientAuth = checkNotNull(clientAuth, "clientAuth");
return this;
}
/**
* The TLS protocol versions to enable.
* @param protocols The protocols to enable, or {@code null} to enable the default protocols.
* @see SSLEngine#setEnabledCipherSuites(String[])
*/
public SslContextBuilder protocols(String... protocols) {
this.protocols = protocols == null ? null : protocols.clone();
return this;
}
/**
* {@code true} if the first write request shouldn't be encrypted.
*/
public SslContextBuilder startTls(boolean startTls) {
this.startTls = startTls;
return this;
}
/**
* Enables OCSP stapling. Please note that not all {@link SslProvider} implementations support OCSP
* stapling and an exception will be thrown upon {@link #build()}.
*
* @see OpenSsl#isOcspSupported()
*/
@UnstableApi
public SslContextBuilder enableOcsp(boolean enableOcsp) {
this.enableOcsp = enableOcsp;
return this;
}
/**
* Create new {@code SslContext} instance with configured settings.
* <p>If {@link #sslProvider(SslProvider)} is set to {@link SslProvider#OPENSSL_REFCNT} then the caller is
* responsible for releasing this object, or else native memory may leak.
*/
public SslContext build() throws SSLException {
if (forServer) {
return SslContext.newServerContextInternal(provider, sslContextProvider, trustCertCollection,
trustManagerFactory, keyCertChain, key, keyPassword, keyManagerFactory,
ciphers, cipherFilter, apn, sessionCacheSize, sessionTimeout, clientAuth, protocols, startTls,
enableOcsp);
} else {
return SslContext.newClientContextInternal(provider, sslContextProvider, trustCertCollection,
trustManagerFactory, keyCertChain, key, keyPassword, keyManagerFactory,
ciphers, cipherFilter, apn, protocols, sessionCacheSize, sessionTimeout, enableOcsp);
}
}
}