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org.eclipse.jetty.client.AuthenticationProtocolHandler Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.client;
import java.net.URI;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.jetty.client.api.Authentication;
import org.eclipse.jetty.client.api.Connection;
import org.eclipse.jetty.client.api.ContentResponse;
import org.eclipse.jetty.client.api.Request;
import org.eclipse.jetty.client.api.Response;
import org.eclipse.jetty.client.api.Result;
import org.eclipse.jetty.client.util.BufferingResponseListener;
import org.eclipse.jetty.http.HttpField;
import org.eclipse.jetty.http.HttpHeader;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
public abstract class AuthenticationProtocolHandler implements ProtocolHandler
{
public static final int DEFAULT_MAX_CONTENT_LENGTH = 16*1024;
public static final Logger LOG = Log.getLogger(AuthenticationProtocolHandler.class);
private static final Pattern AUTHENTICATE_PATTERN = Pattern.compile("([^\\s]+)\\s+realm=\"([^\"]*)\"(.*)", Pattern.CASE_INSENSITIVE);
private final HttpClient client;
private final int maxContentLength;
private final ResponseNotifier notifier;
protected AuthenticationProtocolHandler(HttpClient client, int maxContentLength)
{
this.client = client;
this.maxContentLength = maxContentLength;
this.notifier = new ResponseNotifier();
}
protected HttpClient getHttpClient()
{
return client;
}
protected abstract HttpHeader getAuthenticateHeader();
protected abstract HttpHeader getAuthorizationHeader();
protected abstract URI getAuthenticationURI(Request request);
protected abstract String getAuthenticationAttribute();
@Override
public Response.Listener getResponseListener()
{
// Return new instances every time to keep track of the response content
return new AuthenticationListener();
}
private class AuthenticationListener extends BufferingResponseListener
{
private AuthenticationListener()
{
super(maxContentLength);
}
@Override
public void onComplete(Result result)
{
HttpRequest request = (HttpRequest)result.getRequest();
ContentResponse response = new HttpContentResponse(result.getResponse(), getContent(), getMediaType(), getEncoding());
if (result.isFailed())
{
if (LOG.isDebugEnabled())
LOG.debug("Authentication challenge failed {}", result.getFailure());
forwardFailureComplete(request, result.getRequestFailure(), response, result.getResponseFailure());
return;
}
String authenticationAttribute = getAuthenticationAttribute();
HttpConversation conversation = request.getConversation();
if (conversation.getAttribute(authenticationAttribute) != null)
{
// We have already tried to authenticate, but we failed again
if (LOG.isDebugEnabled())
LOG.debug("Bad credentials for {}", request);
forwardSuccessComplete(request, response);
return;
}
HttpHeader header = getAuthenticateHeader();
List headerInfos = parseAuthenticateHeader(response, header);
if (headerInfos.isEmpty())
{
if (LOG.isDebugEnabled())
LOG.debug("Authentication challenge without {} header", header);
forwardFailureComplete(request, null, response, new HttpResponseException("HTTP protocol violation: Authentication challenge without " + header + " header", response));
return;
}
Authentication authentication = null;
Authentication.HeaderInfo headerInfo = null;
URI authURI = resolveURI(request, getAuthenticationURI(request));
if (authURI != null)
{
for (Authentication.HeaderInfo element : headerInfos)
{
authentication = client.getAuthenticationStore().findAuthentication(element.getType(), authURI, element.getRealm());
if (authentication != null)
{
headerInfo = element;
break;
}
}
}
if (authentication == null)
{
if (LOG.isDebugEnabled())
LOG.debug("No authentication available for {}", request);
forwardSuccessComplete(request, response);
return;
}
try
{
final Authentication.Result authnResult = authentication.authenticate(request, response, headerInfo, conversation);
if (LOG.isDebugEnabled())
LOG.debug("Authentication result {}", authnResult);
if (authnResult == null)
{
forwardSuccessComplete(request, response);
return;
}
conversation.setAttribute(authenticationAttribute, true);
URI requestURI = request.getURI();
String path = null;
if (requestURI == null)
{
requestURI = resolveURI(request, null);
path = request.getPath();
}
Request newRequest = client.copyRequest(request, requestURI);
if (path != null)
newRequest.path(path);
authnResult.apply(newRequest);
// Copy existing, explicitly set, authorization headers.
copyIfAbsent(request, newRequest, HttpHeader.AUTHORIZATION);
copyIfAbsent(request, newRequest, HttpHeader.PROXY_AUTHORIZATION);
newRequest.onResponseSuccess(r -> client.getAuthenticationStore().addAuthenticationResult(authnResult));
Connection connection = (Connection)request.getAttributes().get(Connection.class.getName());
if (connection != null)
connection.send(newRequest, null);
else
newRequest.send(null);
}
catch (Throwable x)
{
if (LOG.isDebugEnabled())
LOG.debug("Authentication failed", x);
forwardFailureComplete(request, null, response, x);
}
}
private URI resolveURI(HttpRequest request, URI uri)
{
if (uri != null)
return uri;
String target = request.getScheme() + "://" + request.getHost();
int port = request.getPort();
if (port > 0)
target += ":" + port;
return URI.create(target);
}
private void copyIfAbsent(HttpRequest oldRequest, Request newRequest, HttpHeader header)
{
HttpField field = oldRequest.getHeaders().getField(header);
if (field != null && !newRequest.getHeaders().contains(header))
newRequest.getHeaders().put(field);
}
private void forwardSuccessComplete(HttpRequest request, Response response)
{
HttpConversation conversation = request.getConversation();
conversation.updateResponseListeners(null);
notifier.forwardSuccessComplete(conversation.getResponseListeners(), request, response);
}
private void forwardFailureComplete(HttpRequest request, Throwable requestFailure, Response response, Throwable responseFailure)
{
HttpConversation conversation = request.getConversation();
conversation.updateResponseListeners(null);
List responseListeners = conversation.getResponseListeners();
if (responseFailure == null)
notifier.forwardSuccess(responseListeners, response);
else
notifier.forwardFailure(responseListeners, response, responseFailure);
notifier.notifyComplete(responseListeners, new Result(request, requestFailure, response, responseFailure));
}
private List parseAuthenticateHeader(Response response, HttpHeader header)
{
// TODO: these should be ordered by strength
List result = new ArrayList<>();
List values = Collections.list(response.getHeaders().getValues(header.asString()));
for (String value : values)
{
Matcher matcher = AUTHENTICATE_PATTERN.matcher(value);
if (matcher.matches())
{
String type = matcher.group(1);
String realm = matcher.group(2);
String params = matcher.group(3);
Authentication.HeaderInfo headerInfo = new Authentication.HeaderInfo(type, realm, params, getAuthorizationHeader());
result.add(headerInfo);
}
}
return result;
}
}
}
