| /* |
| * 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.config.plugins.convert; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| import org.apache.logging.log4j.Logger; |
| import org.apache.logging.log4j.status.StatusLogger; |
| import org.apache.logging.log4j.util.LoaderUtil; |
| |
| /** |
| * @Since 2.9 |
| */ |
| public class Base64Converter { |
| |
| private static final Logger LOGGER = StatusLogger.getLogger(); |
| private static Method method = null; |
| private static Object decoder = null; |
| |
| static { |
| try { |
| // Base64 is available in Java 8 and up. |
| Class<?> clazz = LoaderUtil.loadClass("java.util.Base64"); |
| final Method getDecoder = clazz.getMethod("getDecoder", (Class[]) null); |
| decoder = getDecoder.invoke(null, (Object[]) null); |
| clazz = decoder.getClass(); |
| method = clazz.getMethod("decode", String.class); |
| } catch (final ClassNotFoundException ex) { |
| |
| } catch (final NoSuchMethodException ex) { |
| |
| } catch (final IllegalAccessException ex) { |
| |
| } catch (final InvocationTargetException ex) { |
| |
| } |
| if (method == null) { |
| try { |
| // DatatypeConverter is not in the default module in Java 9. |
| final Class<?> clazz = LoaderUtil.loadClass("javax.xml.bind.DatatypeConverter"); |
| method = clazz.getMethod("parseBase64Binary", String.class); |
| } catch (final ClassNotFoundException ex) { |
| LOGGER.error("No Base64 Converter is available"); |
| } catch (final NoSuchMethodException ex) { |
| |
| } |
| } |
| } |
| |
| public static byte[] parseBase64Binary(final String encoded) { |
| if (method == null) { |
| LOGGER.error("No base64 converter"); |
| } else { |
| try { |
| return (byte[]) method.invoke(decoder, encoded); |
| } catch (final IllegalAccessException ex) { |
| LOGGER.error("Error decoding string - " + ex.getMessage()); |
| } catch (final InvocationTargetException ex) { |
| LOGGER.error("Error decoding string - " + ex.getMessage()); |
| } |
| } |
| return new byte[0]; |
| } |
| } |