| /* |
| * Copyright (c) 2006, 2011, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.net.httpserver; |
| |
| import java.util.Base64; |
| |
| /** |
| * BasicAuthenticator provides an implementation of HTTP Basic |
| * authentication. It is an abstract class and must be extended |
| * to provide an implementation of {@link #checkCredentials(String,String)} |
| * which is called to verify each incoming request. |
| */ |
| @jdk.Exported |
| public abstract class BasicAuthenticator extends Authenticator { |
| |
| protected String realm; |
| |
| /** |
| * Creates a BasicAuthenticator for the given HTTP realm |
| * @param realm The HTTP Basic authentication realm |
| * @throws NullPointerException if the realm is an empty string |
| */ |
| public BasicAuthenticator (String realm) { |
| this.realm = realm; |
| } |
| |
| /** |
| * returns the realm this BasicAuthenticator was created with |
| * @return the authenticator's realm string. |
| */ |
| public String getRealm () { |
| return realm; |
| } |
| |
| public Result authenticate (HttpExchange t) |
| { |
| Headers rmap = t.getRequestHeaders(); |
| /* |
| * look for auth token |
| */ |
| String auth = rmap.getFirst ("Authorization"); |
| if (auth == null) { |
| Headers map = t.getResponseHeaders(); |
| map.set ("WWW-Authenticate", "Basic realm=" + "\""+realm+"\""); |
| return new Authenticator.Retry (401); |
| } |
| int sp = auth.indexOf (' '); |
| if (sp == -1 || !auth.substring(0, sp).equals ("Basic")) { |
| return new Authenticator.Failure (401); |
| } |
| byte[] b = Base64.getDecoder().decode(auth.substring(sp+1)); |
| String userpass = new String (b); |
| int colon = userpass.indexOf (':'); |
| String uname = userpass.substring (0, colon); |
| String pass = userpass.substring (colon+1); |
| |
| if (checkCredentials (uname, pass)) { |
| return new Authenticator.Success ( |
| new HttpPrincipal ( |
| uname, realm |
| ) |
| ); |
| } else { |
| /* reject the request again with 401 */ |
| |
| Headers map = t.getResponseHeaders(); |
| map.set ("WWW-Authenticate", "Basic realm=" + "\""+realm+"\""); |
| return new Authenticator.Failure(401); |
| } |
| } |
| |
| /** |
| * called for each incoming request to verify the |
| * given name and password in the context of this |
| * Authenticator's realm. Any caching of credentials |
| * must be done by the implementation of this method |
| * @param username the username from the request |
| * @param password the password from the request |
| * @return <code>true</code> if the credentials are valid, |
| * <code>false</code> otherwise. |
| */ |
| public abstract boolean checkCredentials (String username, String password); |
| } |
| |