| /* |
| * 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 flex.messaging.services.http.proxy; |
| |
| import flex.messaging.FlexContext; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| /** |
| * |
| * Determines whether overall access to the proxy is allowed for a request. |
| */ |
| public class AccessFilter extends ProxyFilter |
| { |
| private static final int TOO_MANY_COOKIES = 10703; |
| |
| /** |
| * Invokes the filter with the context. |
| * |
| * @param context The proxy context. |
| */ |
| public void invoke(ProxyContext context) |
| { |
| HttpServletRequest clientRequest = FlexContext.getHttpRequest(); |
| |
| // as requested by @stake, limit the number of cookies that can be sent from the endpoint to prevent |
| // as denial of service attack. It seems our processing of Flex-mangled cookies bogs down the server. |
| // We set the cookie limit to 200, but it can be changed via -Dflex.cookieLimit |
| if (clientRequest != null) |
| { |
| javax.servlet.http.Cookie[] cookies = clientRequest.getCookies(); |
| if (cookies != null && cookies.length > context.getCookieLimit()) |
| { |
| ProxyException e = new ProxyException(); |
| e.setMessage(TOO_MANY_COOKIES, new Object[] { "" + cookies.length }); |
| throw e; |
| } |
| } |
| |
| if (next != null) |
| { |
| next.invoke(context); |
| } |
| } |
| } |