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/KeyStoreConfiguration.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 java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.util.Arrays;
import java.util.Objects;

import javax.net.ssl.KeyManagerFactory;

import org.apache.logging.log4j.core.Core;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;

/**
 * Configuration of the KeyStore
 */
@Plugin(name = "KeyStore", category = Core.CATEGORY_NAME, printObject = true)
public class KeyStoreConfiguration extends AbstractKeyStoreConfiguration {

    private final String keyManagerFactoryAlgorithm;

    /**
     *
     * @throws StoreConfigurationException Thrown if this instance cannot load the KeyStore.
     */
    public KeyStoreConfiguration(final String location,
                                 final PasswordProvider  passwordProvider,
                                 final String keyStoreType,
                                 final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
        super(location, passwordProvider, keyStoreType);
        this.keyManagerFactoryAlgorithm = keyManagerFactoryAlgorithm == null ? KeyManagerFactory.getDefaultAlgorithm()
                : keyManagerFactoryAlgorithm;
    }

    /**
     *
     * @throws StoreConfigurationException Thrown if this instance cannot load the KeyStore.
     * @deprecated use {@link #KeyStoreConfiguration(String, PasswordProvider, String, String)} instead
     */
    @Deprecated
    public KeyStoreConfiguration(final String location,
                                 final char[] password,
                                 final String keyStoreType,
                                 final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
        this(location, new MemoryPasswordProvider(password), keyStoreType, keyManagerFactoryAlgorithm);
        if (password != null) {
            Arrays.fill(password, '\0');
        }
    }

    /**
     *
     * @throws StoreConfigurationException Thrown if this instance cannot load the KeyStore.
     * @deprecated Use {@link #KeyStoreConfiguration(String, PasswordProvider, String, String)} instead
     */
    @Deprecated
    public KeyStoreConfiguration(final String location, final String password, final String keyStoreType,
            final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
        this(location, new MemoryPasswordProvider(password == null ? null : password.toCharArray()), keyStoreType,
                keyManagerFactoryAlgorithm);
    }

    /**
     * Creates a KeyStoreConfiguration.
     *
     * @param location
     *        The location of the KeyStore, a file path, URL or resource.
     * @param password
     *        The password to access the KeyStore.
     * @param keyStoreType
     *        The KeyStore type, null defaults to {@code "JKS"}.
     * @param keyManagerFactoryAlgorithm
     *         The standard name of the requested algorithm. See the Java Secure Socket Extension Reference Guide for information about these names.
     * @return a new KeyStoreConfiguration
     * @throws StoreConfigurationException Thrown if this call cannot load the KeyStore.
     */
    @PluginFactory
    public static KeyStoreConfiguration createKeyStoreConfiguration(
            // @formatter:off
            @PluginAttribute("location") final String location,
            @PluginAttribute(value = "password", sensitive = true) final char[] password,
            @PluginAttribute("passwordEnvironmentVariable") final String passwordEnvironmentVariable,
            @PluginAttribute("passwordFile") final String passwordFile,
            @PluginAttribute("type") final String keyStoreType,
            @PluginAttribute("keyManagerFactoryAlgorithm") final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
            // @formatter:on

        if (password != null && passwordEnvironmentVariable != null && passwordFile != null) {
            throw new StoreConfigurationException("You MUST set only one of 'password', 'passwordEnvironmentVariable' or 'passwordFile'.");
        }
        try {
            // @formatter:off
            final PasswordProvider provider = passwordFile != null
                    ? new FilePasswordProvider(passwordFile)
                    : passwordEnvironmentVariable != null
                            ? new EnvironmentPasswordProvider(passwordEnvironmentVariable)
                            // the default is memory char[] array, which may be null
                            : new MemoryPasswordProvider(password);
            // @formatter:on
            if (password != null) {
                Arrays.fill(password, '\0');
            }
            return new KeyStoreConfiguration(location, provider, keyStoreType, keyManagerFactoryAlgorithm);
        } catch (final Exception ex) {
            throw new StoreConfigurationException("Could not configure KeyStore", ex);
        }
    }

    /**
     * @deprecated use {@link #createKeyStoreConfiguration(String, char[], String, String, String, String)}
     */
    @Deprecated
    public static KeyStoreConfiguration createKeyStoreConfiguration(
            // @formatter:off
            final String location,
            final char[] password,
            final String keyStoreType,
            final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
            // @formatter:on
        return createKeyStoreConfiguration(location, password, null, null, keyStoreType, keyManagerFactoryAlgorithm);
    }

    /**
     * Creates a KeyStoreConfiguration.
     *
     * @param location The location of the KeyStore, a file path, URL or resource.
     * @param password The password to access the KeyStore.
     * @param keyStoreType The KeyStore type, null defaults to {@code "JKS"}.
     * @param keyManagerFactoryAlgorithm The standard name of the requested algorithm. See the Java Secure Socket
     * Extension Reference Guide for information about these names.
     * @return a new KeyStoreConfiguration
     * @throws StoreConfigurationException Thrown if this call cannot load the KeyStore.
     * @deprecated Use createKeyStoreConfiguration(String, char[], String, String)
     */
    @Deprecated
    public static KeyStoreConfiguration createKeyStoreConfiguration(
            // @formatter:off
            final String location,
            final String password,
            final String keyStoreType,
            final String keyManagerFactoryAlgorithm) throws StoreConfigurationException {
            // @formatter:on
        return createKeyStoreConfiguration(location,
                (password == null ? null : password.toCharArray()),
                keyStoreType,
                keyManagerFactoryAlgorithm);
    }

    public KeyManagerFactory initKeyManagerFactory() throws NoSuchAlgorithmException, UnrecoverableKeyException,
            KeyStoreException {
        final KeyManagerFactory kmFactory = KeyManagerFactory.getInstance(this.keyManagerFactoryAlgorithm);
        final char[] password = this.getPasswordAsCharArray();
        try {
            kmFactory.init(this.getKeyStore(), password);
        } finally {
            if (password != null) {
                Arrays.fill(password, '\0');
            }
        }
        return kmFactory;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ((keyManagerFactoryAlgorithm == null) ? 0 : keyManagerFactoryAlgorithm.hashCode());
        return result;
    }

    @Override
    public boolean equals(final Object obj) {
        if (this == obj) {
            return true;
        }
        if (!super.equals(obj)) {
            return false;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final KeyStoreConfiguration other = (KeyStoreConfiguration) obj;
        if (!Objects.equals(keyManagerFactoryAlgorithm, other.keyManagerFactoryAlgorithm)) {
            return false;
        }
        return true;
    }

    public String getKeyManagerFactoryAlgorithm() {
        return keyManagerFactoryAlgorithm;
    }
}

⏎ org/apache/logging/log4j/core/net/ssl/KeyStoreConfiguration.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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