com.googlecode.noweco.webmail.httpclient.UnsecureResponseProcessCookies.java Source code

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Here is the source code for com.googlecode.noweco.webmail.httpclient.UnsecureResponseProcessCookies.java

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/*
 * Copyright 2011 The Apache Software Foundation.
 *
 * 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 com.googlecode.noweco.webmail.httpclient;

import java.io.IOException;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.http.Header;
import org.apache.http.HeaderIterator;
import org.apache.http.HttpException;
import org.apache.http.HttpResponse;
import org.apache.http.HttpResponseInterceptor;
import org.apache.http.client.CookieStore;
import org.apache.http.client.protocol.ClientContext;
import org.apache.http.cookie.Cookie;
import org.apache.http.cookie.CookieOrigin;
import org.apache.http.cookie.CookieSpec;
import org.apache.http.cookie.MalformedCookieException;
import org.apache.http.cookie.SM;
import org.apache.http.protocol.HttpContext;

/**
 *
 * @author Gael Lalire
 */
public class UnsecureResponseProcessCookies implements HttpResponseInterceptor {

    private final Log log = LogFactory.getLog(getClass());

    public UnsecureResponseProcessCookies() {
        super();
    }

    public void process(final HttpResponse response, final HttpContext context) throws HttpException, IOException {
        if (response == null) {
            throw new IllegalArgumentException("HTTP request may not be null");
        }
        if (context == null) {
            throw new IllegalArgumentException("HTTP context may not be null");
        }

        // Obtain actual CookieSpec instance
        CookieSpec cookieSpec = (CookieSpec) context.getAttribute(ClientContext.COOKIE_SPEC);
        if (cookieSpec == null) {
            this.log.debug("Cookie spec not specified in HTTP context");
            return;
        }
        // Obtain cookie store
        CookieStore cookieStore = (CookieStore) context.getAttribute(ClientContext.COOKIE_STORE);
        if (cookieStore == null) {
            this.log.debug("Cookie store not specified in HTTP context");
            return;
        }
        // Obtain actual CookieOrigin instance
        CookieOrigin cookieOrigin = (CookieOrigin) context.getAttribute(ClientContext.COOKIE_ORIGIN);
        if (cookieOrigin == null) {
            this.log.debug("Cookie origin not specified in HTTP context");
            return;
        }
        HeaderIterator it = response.headerIterator(SM.SET_COOKIE);
        processCookies(it, cookieSpec, cookieOrigin, cookieStore);

        // see if the cookie spec supports cookie versioning.
        if (cookieSpec.getVersion() > 0) {
            // process set-cookie2 headers.
            // Cookie2 will replace equivalent Cookie instances
            it = response.headerIterator(SM.SET_COOKIE2);
            processCookies(it, cookieSpec, cookieOrigin, cookieStore);
        }
    }

    private void processCookies(final HeaderIterator iterator, final CookieSpec cookieSpec,
            final CookieOrigin cookieOrigin, final CookieStore cookieStore) {
        while (iterator.hasNext()) {
            Header header = iterator.nextHeader();
            try {
                List<Cookie> cookies = cookieSpec.parse(header, cookieOrigin);
                for (Cookie cookie : cookies) {
                    cookieStore.addCookie(cookie);

                    if (this.log.isDebugEnabled()) {
                        this.log.debug("Cookie accepted: \"" + cookie + "\". ");
                    }
                }
            } catch (MalformedCookieException ex) {
                if (this.log.isWarnEnabled()) {
                    this.log.warn("Invalid cookie header: \"" + header + "\". " + ex.getMessage());
                }
            }
        }
    }

}