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/*
* 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.tomcat.websocket.server;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.Principal;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import javax.servlet.http.HttpServletRequest;
import javax.websocket.server.HandshakeRequest;
/**
* Represents the request that this session was opened under.
*/
public class WsHandshakeRequest implements HandshakeRequest {
private final URI requestUri;
private final Map<String,List<String>> parameterMap;
private final String queryString;
private final Principal userPrincipal;
private final Map<String,List<String>> headers;
private final Object httpSession;
private volatile HttpServletRequest request;
public WsHandshakeRequest(HttpServletRequest request) {
this.request = request;
queryString = request.getQueryString();
userPrincipal = request.getUserPrincipal();
httpSession = request.getSession(false);
// URI
StringBuilder sb = new StringBuilder(request.getRequestURI());
if (queryString != null) {
sb.append("?");
sb.append(queryString);
}
try {
requestUri = new URI(sb.toString());
} catch (URISyntaxException e) {
throw new IllegalArgumentException(e);
}
// ParameterMap
Map<String,String[]> originalParameters = request.getParameterMap();
Map<String,List<String>> newParameters =
new HashMap<String, List<String>>(originalParameters.size());
for (Entry<String,String[]> entry : originalParameters.entrySet()) {
newParameters.put(entry.getKey(),
Collections.unmodifiableList(
Arrays.asList(entry.getValue())));
}
parameterMap = Collections.unmodifiableMap(newParameters);
// Headers
Map<String,List<String>> newHeaders = new HashMap<String, List<String>>();
Enumeration<String> headerNames = request.getHeaderNames();
while (headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
newHeaders.put(headerName, Collections.unmodifiableList(
Collections.list(request.getHeaders(headerName))));
}
headers = Collections.unmodifiableMap(newHeaders);
}
@Override
public URI getRequestURI() {
return requestUri;
}
@Override
public Map<String,List<String>> getParameterMap() {
return parameterMap;
}
@Override
public String getQueryString() {
return queryString;
}
@Override
public Principal getUserPrincipal() {
return userPrincipal;
}
@Override
public Map<String,List<String>> getHeaders() {
return headers;
}
@Override
public boolean isUserInRole(String role) {
if (request == null) {
throw new IllegalStateException();
}
return request.isUserInRole(role);
}
@Override
public Object getHttpSession() {
return httpSession;
}
/**
* Called when the HandshakeRequest is no longer required. Since an instance
* of this class retains a reference to the current HttpServletRequest that
* reference needs to be cleared as the HttpServletRequest may be reused.
*
* There is no reason for instances of this class to be accessed once the
* handshake has been completed.
*/
void finished() {
request = null;
}
}
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