236 lines
8.4 KiB
Java
236 lines
8.4 KiB
Java
/*
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* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.net.www.protocol.http;
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import java.net.URL;
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import java.io.IOException;
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import java.net.Authenticator.RequestorType;
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import java.util.Base64;
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import java.util.HashMap;
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import sun.net.www.HeaderParser;
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import static sun.net.www.protocol.http.AuthScheme.NEGOTIATE;
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import static sun.net.www.protocol.http.AuthScheme.KERBEROS;
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import sun.security.action.GetPropertyAction;
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/**
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* NegotiateAuthentication:
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*
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* @author weijun.wang@sun.com
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* @since 1.6
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*/
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class NegotiateAuthentication extends AuthenticationInfo {
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private static final long serialVersionUID = 100L;
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final private HttpCallerInfo hci;
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// These maps are used to manage the GSS availability for diffrent
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// hosts. The key for both maps is the host name.
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// <code>supported</code> is set when isSupported is checked,
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// if it's true, a cached Negotiator is put into <code>cache</code>.
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// the cache can be used only once, so after the first use, it's cleaned.
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static HashMap <String, Boolean> supported = null;
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static ThreadLocal <HashMap <String, Negotiator>> cache = null;
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/* Whether cache is enabled for Negotiate/Kerberos */
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private static final boolean cacheSPNEGO;
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static {
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String spnegoCacheProp = java.security.AccessController.doPrivileged(
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new sun.security.action.GetPropertyAction("jdk.spnego.cache", "true"));
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cacheSPNEGO = Boolean.parseBoolean(spnegoCacheProp);
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}
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// The HTTP Negotiate Helper
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private Negotiator negotiator = null;
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/**
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* Constructor used for both WWW and proxy entries.
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* @param hci a schemed object.
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*/
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public NegotiateAuthentication(HttpCallerInfo hci) {
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super(RequestorType.PROXY==hci.authType ? PROXY_AUTHENTICATION : SERVER_AUTHENTICATION,
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hci.scheme.equalsIgnoreCase("Negotiate") ? NEGOTIATE : KERBEROS,
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hci.url,
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"");
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this.hci = hci;
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}
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/**
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* @return true if this authentication supports preemptive authorization
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*/
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@Override
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public boolean supportsPreemptiveAuthorization() {
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return false;
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}
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/**
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* Find out if the HttpCallerInfo supports Negotiate protocol. In order to
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* find out yes or no, an initialization of a Negotiator object against it
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* is tried. The generated object will be cached under the name of ths
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* hostname at a success try.<br>
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*
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* If this method is called for the second time on an HttpCallerInfo with
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* the same hostname, the answer is retrieved from cache.
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*
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* @return true if supported
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*/
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synchronized public static boolean isSupported(HttpCallerInfo hci) {
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if (supported == null) {
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supported = new HashMap<>();
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}
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String hostname = hci.host;
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hostname = hostname.toLowerCase();
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if (supported.containsKey(hostname)) {
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return supported.get(hostname);
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}
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Negotiator neg = Negotiator.getNegotiator(hci);
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if (neg != null) {
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supported.put(hostname, true);
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// the only place cache.put is called. here we can make sure
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// the object is valid and the oneToken inside is not null
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if (cache == null) {
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cache = new ThreadLocal<HashMap<String, Negotiator>>() {
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@Override
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protected HashMap<String, Negotiator> initialValue() {
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return new HashMap<>();
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}
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};
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}
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cache.get().put(hostname, neg);
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return true;
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} else {
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supported.put(hostname, false);
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return false;
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}
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}
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private static synchronized HashMap<String, Negotiator> getCache() {
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if (cache == null) return null;
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return cache.get();
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}
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@Override
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protected boolean useAuthCache() {
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return super.useAuthCache() && cacheSPNEGO;
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}
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/**
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* Not supported. Must use the setHeaders() method
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*/
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@Override
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public String getHeaderValue(URL url, String method) {
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throw new RuntimeException ("getHeaderValue not supported");
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}
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/**
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* Check if the header indicates that the current auth. parameters are stale.
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* If so, then replace the relevant field with the new value
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* and return true. Otherwise return false.
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* returning true means the request can be retried with the same userid/password
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* returning false means we have to go back to the user to ask for a new
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* username password.
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*/
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@Override
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public boolean isAuthorizationStale (String header) {
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return false; /* should not be called for Negotiate */
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}
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/**
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* Set header(s) on the given connection.
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* @param conn The connection to apply the header(s) to
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* @param p A source of header values for this connection, not used because
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* HeaderParser converts the fields to lower case, use raw instead
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* @param raw The raw header field.
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* @return true if all goes well, false if no headers were set.
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*/
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@Override
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public synchronized boolean setHeaders(HttpURLConnection conn, HeaderParser p, String raw) {
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try {
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String response;
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byte[] incoming = null;
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String[] parts = raw.split("\\s+");
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if (parts.length > 1) {
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incoming = Base64.getDecoder().decode(parts[1]);
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}
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response = hci.scheme + " " + Base64.getEncoder().encodeToString(
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incoming==null?firstToken():nextToken(incoming));
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conn.setAuthenticationProperty(getHeaderName(), response);
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return true;
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} catch (IOException e) {
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return false;
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}
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}
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/**
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* return the first token.
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* @returns the token
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* @throws IOException if <code>Negotiator.getNegotiator()</code> or
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* <code>Negotiator.firstToken()</code> failed.
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*/
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private byte[] firstToken() throws IOException {
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negotiator = null;
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HashMap <String, Negotiator> cachedMap = getCache();
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if (cachedMap != null) {
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negotiator = cachedMap.get(getHost());
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if (negotiator != null) {
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cachedMap.remove(getHost()); // so that it is only used once
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}
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}
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if (negotiator == null) {
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negotiator = Negotiator.getNegotiator(hci);
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if (negotiator == null) {
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IOException ioe = new IOException("Cannot initialize Negotiator");
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throw ioe;
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}
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}
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return negotiator.firstToken();
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}
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/**
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* return more tokens
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* @param token the token to be fed into <code>negotiator.nextToken()</code>
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* @returns the token
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* @throws IOException if <code>negotiator.nextToken()</code> throws Exception.
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* May happen if the input token is invalid.
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*/
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private byte[] nextToken(byte[] token) throws IOException {
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return negotiator.nextToken(token);
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}
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// MS will send a final WWW-Authenticate even if the status is already
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// 200 OK. The token can be fed into initSecContext() again to determine
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// if the server can be trusted. This is not the same concept as Digest's
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// Authentication-Info header.
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//
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// Currently we ignore this header.
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}
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