| /* |
| * 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.openejb.cipher; |
| |
| import org.apache.xbean.finder.ResourceFinder; |
| |
| import java.io.BufferedReader; |
| import java.io.InputStreamReader; |
| import java.net.URL; |
| import java.util.Map; |
| |
| @SuppressWarnings("deprecation") |
| public class PasswordCipherFactory { |
| /** |
| * Create a {@link org.apache.openejb.cipher.PasswordCipher} instance from the |
| * passwordCipher class name. |
| * |
| * @param passwordCipherClass the password cipher to look for |
| * @return the password cipher from the passwordCipher class name |
| * optionally set. |
| */ |
| public static PasswordCipher getPasswordCipher(final String passwordCipherClass) { |
| final PasswordCipher cipher; |
| try { |
| cipher = doInternalPasswordCipher(PasswordCipher.class, passwordCipherClass); |
| |
| } catch (final PasswordCipherException initial) { |
| try { |
| return doInternalPasswordCipher(org.apache.openejb.resource.jdbc.cipher.PasswordCipher.class, passwordCipherClass); |
| |
| } catch (final PasswordCipherException ignore) { |
| throw initial; |
| } |
| } |
| return cipher; |
| } |
| |
| private static <T extends PasswordCipher> T doInternalPasswordCipher(final Class<T> intf, final String passwordCipherClass) { |
| // Load the password cipher class |
| Class<? extends T> pwdCipher; |
| |
| // try looking for implementation in /META-INF/org.apache.openejb.cipher.PasswordCipher |
| final ResourceFinder finder = new ResourceFinder("META-INF/"); |
| final Map<String, Class<? extends T>> impls; |
| try { |
| impls = finder.mapAllImplementations(intf); |
| |
| } catch (final Throwable t) { |
| final String message = |
| "Password cipher '" + passwordCipherClass + |
| "' not found in META-INF/org.apache.openejb.cipher.PasswordCipher."; |
| throw new PasswordCipherException(message, t); |
| } |
| pwdCipher = impls.get(passwordCipherClass); |
| |
| // |
| final ClassLoader tccl = Thread.currentThread().getContextClassLoader(); |
| final URL url = tccl.getResource("META-INF/" + intf.getName() + "/" + passwordCipherClass); |
| if (url != null) { |
| try { |
| final String clazz = new BufferedReader(new InputStreamReader(url.openStream())).readLine().trim(); |
| pwdCipher = tccl.loadClass(clazz).asSubclass(intf); |
| } catch (final Exception e) { |
| // ignored |
| } |
| } |
| |
| // if not found in META-INF/org.apache.openejb.cipher.PasswordCipher |
| // we can try to load the class. |
| if (null == pwdCipher) { |
| try { |
| try { |
| pwdCipher = Class.forName(passwordCipherClass).asSubclass(intf); |
| |
| } catch (final ClassNotFoundException cnfe) { |
| pwdCipher = tccl.loadClass(passwordCipherClass).asSubclass(intf); |
| } |
| } catch (final Throwable t) { |
| final String message = "Cannot load password cipher class '" + passwordCipherClass + "'"; |
| throw new PasswordCipherException(message, t); |
| } |
| } |
| |
| // Create an instance |
| try { |
| return pwdCipher.newInstance(); |
| } catch (final Throwable t) { |
| final String message = "Cannot create password cipher instance"; |
| throw new PasswordCipherException(message, t); |
| } |
| |
| } |
| } |