maulin-vasavada commented on a change in pull request #1027: URL: https://github.com/apache/cassandra/pull/1027#discussion_r688285780
########## File path: src/java/org/apache/cassandra/security/DefaultSslContextFactoryImpl.java ########## @@ -0,0 +1,369 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF 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 org.apache.cassandra.security; + +import java.io.File; +import java.io.InputStream; +import java.nio.file.Files; +import java.nio.file.Paths; +import java.security.KeyStore; +import java.security.cert.X509Certificate; +import java.util.ArrayList; +import java.util.Date; +import java.util.Enumeration; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import javax.net.ssl.KeyManagerFactory; +import javax.net.ssl.SSLContext; +import javax.net.ssl.SSLException; +import javax.net.ssl.TrustManager; +import javax.net.ssl.TrustManagerFactory; + +import com.google.common.annotations.VisibleForTesting; +import com.google.common.collect.ImmutableList; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import io.netty.handler.ssl.CipherSuiteFilter; +import io.netty.handler.ssl.ClientAuth; +import io.netty.handler.ssl.SslContext; +import io.netty.handler.ssl.SslContextBuilder; +import io.netty.handler.ssl.SslProvider; + +/** + * Cassandra's default implementation class for the configuration key {@code ssl_context_factory}. It uses + * file based keystores. + */ +public final class DefaultSslContextFactoryImpl implements ISslContextFactory +{ + private static final Logger logger = LoggerFactory.getLogger(DefaultSslContextFactoryImpl.class); + + @VisibleForTesting + volatile boolean checkedExpiry = false; + + /** + * List of files that trigger hot reloading of SSL certificates + */ + private volatile List<HotReloadableFile> hotReloadableFiles = new ArrayList<>(); + + /* This list is substituted in configurations that have explicitly specified the original "TLS" default, + * by extracting it from the default "TLS" SSL Context instance + */ + static private final List<String> TLS_PROTOCOL_SUBSTITUTION = SSLFactory.tlsInstanceProtocolSubstitution(); + + private final Map<String,Object> parameters; + private final String keystore; + private final String keystore_password; + private final String truststore; + private final String truststore_password; + private final List<String> cipher_suites; + private String protocol; + private List<String> accepted_protocols; + private final String algorithm; + private final String store_type; + private final boolean require_client_auth; + private final boolean require_endpoint_verification; + // ServerEncryptionOptions does not use the enabled flag at all instead using the existing + // internode_encryption option. So we force this private and expose through isEnabled + // so users of ServerEncryptionOptions can't accidentally use this when they should use isEnabled + // Long term we need to refactor ClientEncryptionOptions and ServerEncyrptionOptions to be separate + // classes so we can choose appropriate configuration for each. + // See CASSANDRA-15262 and CASSANDRA-15146 + protected Boolean enabled; + protected Boolean optional; + + /* For test only */ + DefaultSslContextFactoryImpl(){ + parameters = new HashMap<>(); + keystore = "conf/.keystore"; + keystore_password = "cassandra"; + truststore = "conf/.truststore"; + truststore_password = "cassandra"; + cipher_suites = null; + protocol = null; + accepted_protocols = null; + algorithm = null; + store_type = "JKS"; + require_client_auth = false; + require_endpoint_verification = false; + enabled = null; + optional = null; + } + + public DefaultSslContextFactoryImpl(Map<String,Object> parameters) { + this.parameters = parameters; + keystore = getString("keystore"); + keystore_password = getString("keystore_password"); + truststore = getString("truststore"); + truststore_password = getString("truststore_password"); + cipher_suites = getStringList("cipher_suites"); + protocol = getString("protocol"); + accepted_protocols = getStringList("accepted_protocols"); + algorithm = getString("algorithm"); + store_type = getString("store_type", "JKS"); + require_client_auth = getBoolean("require_client_auth", false); + require_endpoint_verification = getBoolean("require_endpoint_verification", false); + enabled = getBoolean("enabled"); + this.optional = getBoolean("optional"); + } + + private String getString(String key, String defaultValue) { + return this.parameters.get(key) == null ? defaultValue : (String)this.parameters.get(key); + } + + private String getString(String key) { + return (String)this.parameters.get(key); + } + + private List<String> getStringList(String key) { + return (List<String>)this.parameters.get(key); + } + + private Boolean getBoolean(String key, boolean defaultValue) { + return this.parameters.get(key) == null ? defaultValue : (Boolean)this.parameters.get(key); + } + + private Boolean getBoolean(String key) { + return (Boolean)this.parameters.get(key); + } + + @Override + public SSLContext createJSSESslContext(boolean buildTruststore) throws SSLException + { + TrustManager[] trustManagers = null; + if (buildTruststore) + trustManagers = buildTrustManagerFactory().getTrustManagers(); + + KeyManagerFactory kmf = buildKeyManagerFactory(); + + try + { + SSLContext ctx = SSLContext.getInstance("TLS"); + ctx.init(kmf.getKeyManagers(), trustManagers, null); + return ctx; + } + catch (Exception e) + { + throw new SSLException("Error creating/initializing the SSL Context", e); + } + } + + @Override + public SslContext createNettySslContext(boolean buildTruststore, SocketType socketType, boolean useOpenSsl, + CipherSuiteFilter cipherFilter) throws SSLException + { + /* + There is a case where the netty/openssl combo might not support using KeyManagerFactory. Specifically, + I've seen this with the netty-tcnative dynamic openssl implementation. Using the netty-tcnative + static-boringssl works fine with KeyManagerFactory. If we want to support all of the netty-tcnative + options, we would need to fall back to passing in a file reference for both a x509 and PKCS#8 private + key file in PEM format (see {@link SslContextBuilder#forServer(File, File, String)}). However, we are + not supporting that now to keep the config/yaml API simple. + */ + KeyManagerFactory kmf = buildKeyManagerFactory(); + SslContextBuilder builder; + if (socketType == SocketType.SERVER) + { + builder = SslContextBuilder.forServer(kmf).clientAuth(this.require_client_auth ? ClientAuth.REQUIRE : + ClientAuth.NONE); + } + else + { + builder = SslContextBuilder.forClient().keyManager(kmf); + } + + builder.sslProvider(useOpenSsl ? SslProvider.OPENSSL : SslProvider.JDK).protocols(getAcceptedProtocols()); + + // only set the cipher suites if the opertor has explicity configured values for it; else, use the default + // for each ssl implemention (jdk or openssl) + if (cipher_suites != null && !cipher_suites.isEmpty()) + builder.ciphers(cipher_suites, cipherFilter); + + if (buildTruststore) + builder.trustManager(buildTrustManagerFactory()); + + try + { + return builder.build(); + } + catch (SSLException e) + { + throw new SSLException("failed to build the final SslContext object for secure connections", e); + } + } + + @Override + public synchronized void initHotReloading() throws SSLException { + boolean hasKeystore = hasKeystore(); + boolean hasTruststore = hasTruststore(); + + if ( hasKeystore || hasTruststore ) { + List<HotReloadableFile> fileList = new ArrayList<>(); + if ( hasKeystore ) + { + fileList.add(new HotReloadableFile(keystore)); + } + if ( hasTruststore ) { + fileList.add(new HotReloadableFile(truststore)); + } + hotReloadableFiles = fileList; + } + } + + @Override + public boolean shouldReload() + { + return hotReloadableFiles.stream().anyMatch(HotReloadableFile::shouldReload); Review comment: This makes me think if it is worth to change [HotReloadableFile#shouldReload](https://github.com/maulin-vasavada/cassandra/blob/CEP-9/src/java/org/apache/cassandra/security/DefaultSslContextFactory.java#L189) to make sure the new modified time is greater than the previous modified time instead of just `!=` comparison. -- This is an automated message from the Apache Git Service. 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