/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cxf.rs.security.oauth2.jwt.jaxrs;
import java.io.IOException;
import java.io.OutputStream;
import javax.annotation.Priority;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.ext.WriterInterceptor;
import javax.ws.rs.ext.WriterInterceptorContext;
import org.apache.cxf.io.CachedOutputStream;
import org.apache.cxf.jaxrs.utils.JAXRSUtils;
import org.apache.cxf.rs.security.oauth2.jws.JwsCompactProducer;
import org.apache.cxf.rs.security.oauth2.jws.JwsOutputStream;
import org.apache.cxf.rs.security.oauth2.jws.JwsSignature;
import org.apache.cxf.rs.security.oauth2.jwt.JwtHeaders;
import org.apache.cxf.rs.security.oauth2.jwt.JwtHeadersWriter;
import org.apache.cxf.rs.security.oauth2.jwt.JwtTokenReaderWriter;
import org.apache.cxf.rs.security.oauth2.utils.Base64UrlOutputStream;
import org.apache.cxf.rs.security.oauth2.utils.Base64UrlUtility;
@Priority(Priorities.JWS_WRITE_PRIORITY)
public class JwsWriterInterceptor extends AbstractJwsWriterProvider implements WriterInterceptor {
private boolean contentTypeRequired = true;
private boolean useJwsOutputStream;
private JwtHeadersWriter writer = new JwtTokenReaderWriter();
@Override
public void aroundWriteTo(WriterInterceptorContext ctx) throws IOException, WebApplicationException {
OutputStream actualOs = ctx.getOutputStream();
String ctString = null;
if (contentTypeRequired) {
MediaType mt = ctx.getMediaType();
if (mt != null) {
ctString = JAXRSUtils.mediaTypeToString(mt);
}
}
if (useJwsOutputStream) {
JwtHeaders headers = new JwtHeaders();
JwsSignature jwsSignature = getInitializedSigProvider().createJwsSignature(headers);
if (ctString != null) {
headers.setContentType(ctString);
}
JwsOutputStream jwsStream = new JwsOutputStream(actualOs, jwsSignature);
byte[] headerBytes = writer.headersToJson(headers).getBytes("UTF-8");
Base64UrlUtility.encodeAndStream(headerBytes, 0, headerBytes.length, jwsStream);
jwsStream.write(new byte[]{'.'});
Base64UrlOutputStream base64Stream = new Base64UrlOutputStream(jwsStream);
ctx.setOutputStream(base64Stream);
ctx.proceed();
base64Stream.flush();
jwsStream.flush();
} else {
CachedOutputStream cos = new CachedOutputStream();
ctx.setOutputStream(cos);
ctx.proceed();
JwtHeaders headers = new JwtHeaders();
if (ctString != null) {
headers.setContentType(ctString);
}
JwsCompactProducer p = new JwsCompactProducer(headers, new String(cos.getBytes(), "UTF-8"));
writeJws(p, actualOs);
}
}
public void setContentTypeRequired(boolean contentTypeRequired) {
this.contentTypeRequired = contentTypeRequired;
}
public void setUseJwsOutputStream(boolean useJwsOutputStream) {
this.useJwsOutputStream = useJwsOutputStream;
}
public void setWriter(JwtHeadersWriter writer) {
this.writer = writer;
}
}