/*
* Copyright 2002-2011 the original author or authors.
*
* 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 org.springframework.flex.security3;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.web.access.intercept.DefaultFilterInvocationSecurityMetadataSource;
import org.springframework.security.web.util.RequestMatcher;
import org.springframework.util.Assert;
import flex.messaging.FlexContext;
import flex.messaging.endpoints.Endpoint;
/**
*
* Implementation of {@link SecurityMetadataSource} for BlazeDS {@link Endpoint Endpoints}.
*
* <p>
* This implementation is capable of securing Endpoints both by their channel id, and by their URL pattern.
*
* @author Jeremy Grelle
*/
public class EndpointSecurityMetadataSource implements SecurityMetadataSource {
private Map<RequestMatcher, Collection<ConfigAttribute>> requestMap = new LinkedHashMap<RequestMatcher, Collection<ConfigAttribute>>();
private Map<String, Collection<ConfigAttribute>> endpointMap = new LinkedHashMap<String, Collection<ConfigAttribute>>();
/**
* @see DefaultFilterInvocationSecurityMetadataSource#DefaultFilterInvocationSecurityMetadataSource(UrlMatcher, LinkedHashMap)
*/
public EndpointSecurityMetadataSource(LinkedHashMap<RequestMatcher, Collection<ConfigAttribute>> requestMap) {
Assert.notNull(requestMap, "requestMap cannot be null");
this.requestMap = requestMap;
}
/**
* Builds the internal request map from the supplied map, and stores the endpoint map for matching by channel id.
*
* @param endpointMap map of <String, Collection<ConfigAttribute>>
* @see DefaultFilterInvocationSecurityMetadataSource#DefaultFilterInvocationSecurityMetadataSource(UrlMatcher, LinkedHashMap)
*/
public EndpointSecurityMetadataSource(LinkedHashMap<RequestMatcher, Collection<ConfigAttribute>> requestMap,
HashMap<String, Collection<ConfigAttribute>> endpointMap) {
this(requestMap);
Assert.notNull(endpointMap, "endpointMap cannot be null");
this.endpointMap = endpointMap;
}
/**
*
* {@inheritDoc}
*/
public Collection<ConfigAttribute> getAttributes(Object object) throws IllegalArgumentException {
if (object == null || !this.supports(object.getClass())) {
throw new IllegalArgumentException("Object must be an Endpoint");
}
Endpoint endpoint = (Endpoint) object;
Collection<ConfigAttribute> attributes = null;
if (this.endpointMap.containsKey(endpoint.getId())) {
attributes = this.endpointMap.get(endpoint.getId());
} else {
final HttpServletRequest request = FlexContext.getHttpRequest();
if (request != null) {
for (Map.Entry<RequestMatcher, Collection<ConfigAttribute>> entry : requestMap.entrySet()) {
if (entry.getKey().matches(request)) {
return entry.getValue();
}
}
}
}
return attributes;
}
/**
*
* {@inheritDoc}
*/
public Collection<ConfigAttribute> getAllConfigAttributes() {
List<ConfigAttribute> allAttributes = new ArrayList<ConfigAttribute>();
for (Map.Entry<String, Collection<ConfigAttribute>> entry : this.endpointMap.entrySet()) {
allAttributes.addAll(entry.getValue());
}
for (Map.Entry<RequestMatcher, Collection<ConfigAttribute>> entry : this.requestMap.entrySet()) {
allAttributes.addAll(entry.getValue());
}
return Collections.unmodifiableCollection(allAttributes);
}
/**
*
* {@inheritDoc}
*/
public boolean supports(Class<?> clazz) {
return Endpoint.class.isAssignableFrom(clazz);
}
}