/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed 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 io.undertow.attribute;
import java.io.
UnsupportedEncodingException;
import java.nio.charset.
StandardCharsets;
import io.undertow.
UndertowLogger;
import io.undertow.conduits.
StoredResponseStreamSinkConduit;
import io.undertow.server.
HttpServerExchange;
import io.undertow.util.
HeaderMap;
import io.undertow.util.
Headers;
/**
* @author Stuart Douglas
*/
public class
StoredResponse implements
ExchangeAttribute {
public static final
ExchangeAttribute INSTANCE = new
StoredResponse();
private
StoredResponse() {
}
@
Override
public
String readAttribute(
HttpServerExchange exchange) {
byte[]
data =
exchange.
getAttachment(
StoredResponseStreamSinkConduit.
RESPONSE);
if(
data == null) {
return null;
}
String charset =
extractCharset(
exchange.
getResponseHeaders());
if(
charset == null) {
return null;
}
try {
return new
String(
data,
charset);
} catch (
UnsupportedEncodingException e) {
UndertowLogger.
ROOT_LOGGER.
debugf(
e,"Could not decode response body using charset %s",
charset);
return null;
}
}
private
String extractCharset(
HeaderMap headers) {
String contentType =
headers.
getFirst(
Headers.
CONTENT_TYPE);
if (
contentType != null) {
String value =
Headers.
extractQuotedValueFromHeader(
contentType, "charset");
if (
value != null) {
return
value;
}
//if it is text we default to ISO_8859_1
if(
contentType.
startsWith("text/")) {
return
StandardCharsets.
ISO_8859_1.
displayName();
}
return null;
}
return null;
}
@
Override
public void
writeAttribute(
HttpServerExchange exchange,
String newValue) throws
ReadOnlyAttributeException {
throw new
ReadOnlyAttributeException("Stored Response",
newValue);
}
public static class
Builder implements
ExchangeAttributeBuilder {
@
Override
public
String name() {
return "Stored Response";
}
@
Override
public
ExchangeAttribute build(final
String token) {
if (
token.
equals("%{STORED_RESPONSE}")) {
return
INSTANCE;
}
return null;
}
@
Override
public int
priority() {
return 0;
}
}
}