| /******************************************************************************* |
| * Copyright (c) 2009 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ecf.internal.provider.filetransfer.httpclient; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.HashSet; |
| import org.apache.commons.httpclient.Credentials; |
| import org.apache.commons.httpclient.UsernamePasswordCredentials; |
| import org.apache.commons.httpclient.auth.AuthScheme; |
| import org.apache.commons.httpclient.auth.CredentialsNotAvailableException; |
| import org.apache.commons.httpclient.auth.CredentialsProvider; |
| import org.eclipse.ecf.core.util.Proxy; |
| |
| public abstract class HttpClientProxyCredentialProvider implements CredentialsProvider { |
| |
| abstract protected Proxy getECFProxy(); |
| |
| abstract protected Credentials getNTLMCredentials(Proxy proxy); |
| |
| private Collection provided; |
| |
| public HttpClientProxyCredentialProvider() { |
| provided = new HashSet(); |
| } |
| |
| private Object makeProvidedKey(AuthScheme scheme, String host, int port, boolean isProxyAuthenticating) { |
| ArrayList list = new ArrayList(3); |
| list.add(host); |
| list.add(new Integer(port)); |
| list.add(Boolean.valueOf(isProxyAuthenticating)); |
| return list; |
| } |
| |
| /** |
| * @throws CredentialsNotAvailableException |
| */ |
| public Credentials getCredentials(AuthScheme scheme, String host, int port, boolean isProxyAuthenticating) throws CredentialsNotAvailableException { |
| if (!isProxyAuthenticating) { |
| return null; |
| } |
| Proxy proxy = getECFProxy(); |
| if (proxy == null) { |
| return null; |
| } |
| |
| Object provideKey = makeProvidedKey(scheme, host, port, isProxyAuthenticating); |
| if (provided.contains(provideKey)) { |
| // HttpClient asks about credentials only once. |
| // If already provided don't use them again. |
| return null; |
| } |
| |
| provided.add(provideKey); |
| |
| if ("ntlm".equalsIgnoreCase(scheme.getSchemeName())) { //$NON-NLS-1$ |
| return getNTLMCredentials(proxy); |
| } else if ("basic".equalsIgnoreCase(scheme.getSchemeName()) || //$NON-NLS-1$ |
| "digest".equalsIgnoreCase(scheme.getSchemeName())) { //$NON-NLS-1$ |
| final String proxyUsername = proxy.getUsername(); |
| final String proxyPassword = proxy.getPassword(); |
| if (proxyUsername != null) { |
| Credentials credentials = new UsernamePasswordCredentials(proxyUsername, proxyPassword); |
| return credentials; |
| } |
| } |
| |
| return null; |
| } |
| } |