org.acegisecurity.securechannel.InsecureChannelProcessor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of acegi-security
There is a newer version: 1.0.7
/* Copyright 2004 Acegi Technology Pty Limited
 *
 * 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.acegisecurity.securechannel;

import org.acegisecurity.ConfigAttribute;
import org.acegisecurity.ConfigAttributeDefinition;
import org.acegisecurity.intercept.web.FilterInvocation;

import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;

import java.io.IOException;

import java.util.Iterator;

import javax.servlet.ServletException;


/**
 * 
 * Ensures channel security is inactive by review of
 * HttpServletRequest.isSecure() responses.
 * 
 * 
 * 
 * The class responds to one case-sensitive keyword, {@link
 * #getInsecureKeyword}. If this keyword is detected,
 * HttpServletRequest.isSecure() is used to determine the channel
 * security offered. If channel security is present, the configured
 * ChannelEntryPoint is called. By default the entry point is
 * {@link RetryWithHttpEntryPoint}.
 * 
 * 
 * 
 * The default insecureKeyword is
 * REQUIRES_INSECURE_CHANNEL.
 * 
 *
 * @author Ben Alex
 * @version $Id: InsecureChannelProcessor.java,v 1.3 2005/11/17 00:55:50 benalex Exp $
 */
public class InsecureChannelProcessor implements InitializingBean,
    ChannelProcessor {
    //~ Instance fields ========================================================

    private ChannelEntryPoint entryPoint = new RetryWithHttpEntryPoint();
    private String insecureKeyword = "REQUIRES_INSECURE_CHANNEL";

    //~ Methods ================================================================

    public void setEntryPoint(ChannelEntryPoint entryPoint) {
        this.entryPoint = entryPoint;
    }

    public ChannelEntryPoint getEntryPoint() {
        return entryPoint;
    }

    public void setInsecureKeyword(String secureKeyword) {
        this.insecureKeyword = secureKeyword;
    }

    public String getInsecureKeyword() {
        return insecureKeyword;
    }

    public void afterPropertiesSet() throws Exception {
        Assert.hasLength(insecureKeyword, "insecureKeyword required");
        Assert.notNull(entryPoint, "entryPoint required");
    }

    public void decide(FilterInvocation invocation,
        ConfigAttributeDefinition config) throws IOException, ServletException {
        if ((invocation == null) || (config == null)) {
            throw new IllegalArgumentException("Nulls cannot be provided");
        }

        Iterator iter = config.getConfigAttributes();

        while (iter.hasNext()) {
            ConfigAttribute attribute = (ConfigAttribute) iter.next();

            if (supports(attribute)) {
                if (invocation.getHttpRequest().isSecure()) {
                    entryPoint.commence(invocation.getRequest(),
                        invocation.getResponse());
                }
            }
        }
    }

    public boolean supports(ConfigAttribute attribute) {
        if ((attribute != null) && (attribute.getAttribute() != null)
            && attribute.getAttribute().equals(getInsecureKeyword())) {
            return true;
        } else {
            return false;
        }
    }
}