| /* |
| * Copyright (C) 2014 Laurent Goujon <lgoujon@twitter.com> and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| package org.eclipse.jgit.util; |
| |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.InvocationTargetException; |
| import java.net.URL; |
| |
| import org.ietf.jgss.GSSManager; |
| |
| /** |
| * Factory to detect which GSSManager implementation should be used. |
| * |
| * @since 3.4 |
| */ |
| public abstract class GSSManagerFactory { |
| /** |
| * Auto-detects the GSSManager factory to use based on system. |
| * |
| * @return detected GSSManager factory |
| */ |
| public static GSSManagerFactory detect() { |
| return (SunGSSManagerFactory.isSupported()) ? new SunGSSManagerFactory() |
| : new DefaultGSSManagerFactory(); |
| } |
| |
| /** |
| * Returns a GSS Manager instance for the provided url |
| * |
| * @param url |
| * the repository url |
| * @return a GSSManager instance |
| */ |
| public abstract GSSManager newInstance(URL url); |
| |
| /** |
| * DefaultGSSManagerFactory uses @link {@link GSSManager#getInstance()} but |
| * you might need to set |
| * <code>javax.security.auth.useSubjectCredsOnly</code> system property to |
| * <code>false</code> for authentication to work. |
| */ |
| private static class DefaultGSSManagerFactory extends GSSManagerFactory { |
| private static final GSSManager INSTANCE = GSSManager.getInstance(); |
| |
| @Override |
| public GSSManager newInstance(URL url) { |
| return INSTANCE; |
| } |
| } |
| |
| private static class SunGSSManagerFactory extends GSSManagerFactory { |
| private static boolean IS_SUPPORTED; |
| private static Constructor<?> HTTP_CALLER_INFO_CONSTRUCTOR; |
| private static Constructor<?> HTTP_CALLER_CONSTRUCTOR; |
| |
| private static Constructor<?> GSS_MANAGER_IMPL_CONSTRUCTOR; |
| |
| static { |
| try { |
| init(); |
| IS_SUPPORTED = true; |
| } catch (Exception e) { |
| IS_SUPPORTED = false; |
| } |
| } |
| |
| private static void init() throws ClassNotFoundException, |
| NoSuchMethodException { |
| Class<?> httpCallerInfoClazz = Class |
| .forName("sun.net.www.protocol.http.HttpCallerInfo"); //$NON-NLS-1$ |
| HTTP_CALLER_INFO_CONSTRUCTOR = httpCallerInfoClazz |
| .getConstructor(URL.class); |
| |
| Class<?> httpCallerClazz = Class |
| .forName("sun.security.jgss.HttpCaller"); //$NON-NLS-1$ |
| HTTP_CALLER_CONSTRUCTOR = httpCallerClazz |
| .getConstructor(httpCallerInfoClazz); |
| |
| Class<?> gssCallerClazz = Class |
| .forName("sun.security.jgss.GSSCaller"); //$NON-NLS-1$ |
| Class<?> gssManagerImplClazz = Class |
| .forName("sun.security.jgss.GSSManagerImpl"); //$NON-NLS-1$ |
| GSS_MANAGER_IMPL_CONSTRUCTOR = gssManagerImplClazz |
| .getConstructor(gssCallerClazz); |
| |
| } |
| |
| /** |
| * Detects if SunGSSManagerProvider is supported by the system |
| * |
| * @return true if it is supported |
| */ |
| public static boolean isSupported() { |
| return IS_SUPPORTED; |
| } |
| |
| @Override |
| public GSSManager newInstance(URL url) { |
| try { |
| Object httpCallerInfo = HTTP_CALLER_INFO_CONSTRUCTOR |
| .newInstance(url); |
| Object httpCaller = HTTP_CALLER_CONSTRUCTOR |
| .newInstance(httpCallerInfo); |
| |
| return (GSSManager) GSS_MANAGER_IMPL_CONSTRUCTOR |
| .newInstance(httpCaller); |
| } catch (InstantiationException | IllegalAccessException |
| | IllegalArgumentException | InvocationTargetException e) { |
| throw new Error(e); |
| } |
| } |
| } |
| } |