/*
* 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.servlet.attribute;
import io.undertow.attribute.ExchangeAttribute;
import io.undertow.attribute.ExchangeAttributeBuilder;
import io.undertow.attribute.ReadOnlyAttributeException;
import io.undertow.attribute.RelativePathAttribute;
import io.undertow.attribute.RequestURLAttribute;
import io.undertow.server.HttpServerExchange;
import io.undertow.servlet.handlers.ServletRequestContext;
import javax.servlet.RequestDispatcher;
The relative path
Author: Stuart Douglas
/**
* The relative path
*
* @author Stuart Douglas
*/
public class ServletRelativePathAttribute implements ExchangeAttribute {
public static final String RELATIVE_PATH_SHORT = "%R";
public static final String RELATIVE_PATH = "%{RELATIVE_PATH}";
public static final ExchangeAttribute INSTANCE = new ServletRelativePathAttribute();
private ServletRelativePathAttribute() {
}
@Override
public String readAttribute(final HttpServerExchange exchange) {
ServletRequestContext src = exchange.getAttachment(ServletRequestContext.ATTACHMENT_KEY);
if(src == null) {
return RequestURLAttribute.INSTANCE.readAttribute(exchange);
}
String path = (String) src.getServletRequest().getAttribute(RequestDispatcher.FORWARD_PATH_INFO);
String sp = (String) src.getServletRequest().getAttribute(RequestDispatcher.FORWARD_SERVLET_PATH);
if(path == null && sp == null) {
return RequestURLAttribute.INSTANCE.readAttribute(exchange);
}
if(sp == null) {
return path;
} else if(path == null) {
return sp;
} else {
return sp + path;
}
}
@Override
public void writeAttribute(final HttpServerExchange exchange, final String newValue) throws ReadOnlyAttributeException {
RelativePathAttribute.INSTANCE.writeAttribute(exchange, newValue);
}
@Override
public String toString() {
return RELATIVE_PATH;
}
public static final class Builder implements ExchangeAttributeBuilder {
@Override
public String name() {
return "Relative Path";
}
@Override
public ExchangeAttribute build(final String token) {
return token.equals(RELATIVE_PATH) || token.equals(RELATIVE_PATH_SHORT) ? INSTANCE : null;
}
@Override
public int priority() {
return 0;
}
}
}