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/AbstractKeyStoreConfiguration.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.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.util.Arrays;
import java.util.Objects;

import org.apache.logging.log4j.core.config.ConfigurationSource;
import org.apache.logging.log4j.core.util.NetUtils;

/**
 * Configuration of the KeyStore
 */
public class AbstractKeyStoreConfiguration extends StoreConfiguration<KeyStore> {
    private final KeyStore keyStore;
    private final String keyStoreType;

    public AbstractKeyStoreConfiguration(final String location, final PasswordProvider passwordProvider, final String keyStoreType)
            throws StoreConfigurationException {
        super(location, passwordProvider);
        this.keyStoreType = keyStoreType == null ? SslConfigurationDefaults.KEYSTORE_TYPE : keyStoreType;
        this.keyStore = this.load();
    }

    /**
     * @deprecated Use {@link #AbstractKeyStoreConfiguration(String, PasswordProvider, String)} instead
     */
    @Deprecated
    public AbstractKeyStoreConfiguration(final String location, final char[] password, final String keyStoreType)
            throws StoreConfigurationException {
        this(location, new MemoryPasswordProvider(password), keyStoreType);
    }

    /**
     * @deprecated Use {@link #AbstractKeyStoreConfiguration(String, PasswordProvider, String)} instead
     */
    @Deprecated
    public AbstractKeyStoreConfiguration(final String location, final String password, final String keyStoreType)
            throws StoreConfigurationException {
        this(location, new MemoryPasswordProvider(password == null ? null : password.toCharArray()), keyStoreType);
    }

    @Override
    protected KeyStore load() throws StoreConfigurationException {
        final String loadLocation = this.getLocation();
        LOGGER.debug("Loading keystore from location {}", loadLocation);
        try {
            if (loadLocation == null) {
                throw new IOException("The location is null");
            }
            try (final InputStream fin = openInputStream(loadLocation)) {
                final KeyStore ks = KeyStore.getInstance(this.keyStoreType);
                final char[] password = this.getPasswordAsCharArray();
                try {
                    ks.load(fin, password);
                } finally {
                    if (password != null) {
                        Arrays.fill(password, '\0');
                    }
                }
                LOGGER.debug("KeyStore successfully loaded from location {}", loadLocation);
                return ks;
            }
        } catch (final CertificateException e) {
            LOGGER.error("No Provider supports a KeyStoreSpi implementation for the specified type {} for location {}", this.keyStoreType, loadLocation, e);
            throw new StoreConfigurationException(loadLocation, e);
        } catch (final NoSuchAlgorithmException e) {
            LOGGER.error("The algorithm used to check the integrity of the keystore cannot be found for location {}", loadLocation, e);
            throw new StoreConfigurationException(loadLocation, e);
        } catch (final KeyStoreException e) {
            LOGGER.error("KeyStoreException for location {}", loadLocation, e);
            throw new StoreConfigurationException(loadLocation, e);
        } catch (final FileNotFoundException e) {
            LOGGER.error("The keystore file {} is not found", loadLocation, e);
            throw new StoreConfigurationException(loadLocation, e);
        } catch (final IOException e) {
            LOGGER.error("Something is wrong with the format of the keystore or the given password for location", loadLocation, e);
            throw new StoreConfigurationException(loadLocation, e);
        }
    }

    private InputStream openInputStream(final String filePathOrUri) {
        return ConfigurationSource.fromUri(NetUtils.toURI(filePathOrUri)).getInputStream();
    }

    public KeyStore getKeyStore() {
        return this.keyStore;
    }

    @Override
    public int hashCode() {
        final int prime = 31;
        int result = super.hashCode();
        result = prime * result + ((keyStore == null) ? 0 : keyStore.hashCode());
        result = prime * result + ((keyStoreType == null) ? 0 : keyStoreType.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 AbstractKeyStoreConfiguration other = (AbstractKeyStoreConfiguration) obj;
        if (!Objects.equals(keyStore, other.keyStore)) {
            return false;
        }
        if (!Objects.equals(keyStoreType, other.keyStoreType)) {
            return false;
        }
        return true;
    }

    public String getKeyStoreType() {
        return keyStoreType;
    }

}

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