Apache Log4j Core Implementation provides the functional components of the logging system. Users are free to create their own plugins and include them in the logging configuration. Apache Log4j Core is a required module to use Apache Log4j.

Bytecode (Java 8) for Apache Log4j Core Implementation is provided in a separate JAR file like log4j-core-2.14.1.jar.

Source Code files for Apache Log4j API are provided in both binary packge like apache-log4j-2.14.1-bin.zip and source package like apache-log4j-2.14.1-src.zip. You can download them at Apache Log4j Website.

You can also browse Source Code files for Apache Log4j Core Implementation 2.14.1 below.

⏎ org/apache/logging/log4j/core/net/ssl/SslConfigurationFactory.java

/*
 * 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.logging.log4j.core.net.ssl;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.status.StatusLogger;
import org.apache.logging.log4j.util.PropertiesUtil;

/**
 * Creates an SSL configuration from Log4j properties.
 */
public class SslConfigurationFactory {

    private static final Logger LOGGER = StatusLogger.getLogger();
    private static SslConfiguration sslConfiguration = null;

    private static final String trustStorelocation = "log4j2.trustStoreLocation";
    private static final String trustStorePassword = "log4j2.trustStorePassword";
    private static final String trustStorePasswordFile = "log4j2.trustStorePasswordFile";
    private static final String trustStorePasswordEnvVar = "log4j2.trustStorePasswordEnvironmentVariable";
    private static final String trustStoreKeyStoreType = "log4j2.trustStoreKeyStoreType";
    private static final String trustStoreKeyManagerFactoryAlgorithm = "log4j2.trustStoreKeyManagerFactoryAlgorithm";
    private static final String keyStoreLocation = "log4j2.keyStoreLocation";
    private static final String keyStorePassword = "log4j2.keyStorePassword";
    private static final String keyStorePasswordFile = "log4j2.keyStorePasswordFile";
    private static final String keyStorePasswordEnvVar = "log4j2.keyStorePasswordEnvironmentVariable";
    private static final String keyStoreType = "log4j2.keyStoreType";
    private static final String keyStoreKeyManagerFactoryAlgorithm = "log4j2.keyStoreKeyManagerFactoryAlgorithm";
    private static final String verifyHostName = "log4j2.sslVerifyHostName";

    static {
        PropertiesUtil props = PropertiesUtil.getProperties();
        KeyStoreConfiguration keyStoreConfiguration = null;
        TrustStoreConfiguration trustStoreConfiguration = null;
        String location = props.getStringProperty(trustStorelocation);
        if (location != null) {
            String password = props.getStringProperty(trustStorePassword);
            char[] passwordChars = null;
            if (password != null) {
                passwordChars = password.toCharArray();
            }
            try {
                trustStoreConfiguration = TrustStoreConfiguration.createKeyStoreConfiguration(location, passwordChars,
                    props.getStringProperty(trustStorePasswordEnvVar), props.getStringProperty(trustStorePasswordFile),
                    props.getStringProperty(trustStoreKeyStoreType), props.getStringProperty(trustStoreKeyManagerFactoryAlgorithm));
            } catch (Exception ex) {
                LOGGER.warn("Unable to create trust store configuration due to: {} {}", ex.getClass().getName(),
                    ex.getMessage());
            }
        }
        location = props.getStringProperty(keyStoreLocation);
        if (location != null) {
            String password = props.getStringProperty(keyStorePassword);
            char[] passwordChars = null;
            if (password != null) {
                passwordChars = password.toCharArray();
            }
            try {
                keyStoreConfiguration = KeyStoreConfiguration.createKeyStoreConfiguration(location, passwordChars,
                    props.getStringProperty(keyStorePasswordEnvVar), props.getStringProperty(keyStorePasswordFile),
                    props.getStringProperty(keyStoreType), props.getStringProperty(keyStoreKeyManagerFactoryAlgorithm));
            } catch (Exception ex) {
                LOGGER.warn("Unable to create key store configuration due to: {} {}", ex.getClass().getName(),
                    ex.getMessage());
            }
        }
        if (trustStoreConfiguration != null || keyStoreConfiguration != null) {
            boolean isVerifyHostName = props.getBooleanProperty(verifyHostName, false);
            sslConfiguration = SslConfiguration.createSSLConfiguration("https", keyStoreConfiguration,
                trustStoreConfiguration, isVerifyHostName);
        }
    }

    public static SslConfiguration getSslConfiguration() {
        return sslConfiguration;
    }
}

⏎ org/apache/logging/log4j/core/net/ssl/SslConfigurationFactory.java

Or download all of them as a single archive file:

File name: log4j-core-2.14.1-sources.jar
File size: 1281358 bytes
Release date: 2021-03-06
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