keywhiz.service.filters.CookieRenewingFilter.java Source code

Introduction

Here is the source code for keywhiz.service.filters.CookieRenewingFilter.java

Source

/*
 * Copyright (C) 2015 Square, Inc.
 *
 * 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 keywhiz.service.filters;

import com.google.common.net.HttpHeaders;
import java.io.IOException;
import java.util.Optional;
import javax.inject.Inject;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.core.Cookie;
import keywhiz.auth.User;
import keywhiz.auth.cookie.CookieAuthenticator;
import keywhiz.auth.cookie.CookieConfig;
import keywhiz.auth.cookie.SessionCookie;
import keywhiz.service.resources.admin.SessionLoginResource;

/** Checks for valid session cookies on requests and sets a newer cookie. */
public class CookieRenewingFilter implements ContainerResponseFilter {
    private final CookieConfig sessionCookieConfig;
    private final CookieAuthenticator authenticator;
    private final SessionLoginResource sessionLoginResource;

    @Inject
    public CookieRenewingFilter(@SessionCookie CookieConfig sessionCookieConfig, CookieAuthenticator authenticator,
            SessionLoginResource sessionLoginResource) {
        this.sessionCookieConfig = sessionCookieConfig;
        this.authenticator = authenticator;
        this.sessionLoginResource = sessionLoginResource;
    }

    /**
     * If the user has a valid session token, set a new session token. The new one should have a later
     * expiration time.
     */
    @Override
    public void filter(ContainerRequestContext request, ContainerResponseContext response) throws IOException {
        String sessionCookieName = sessionCookieConfig.getName();
        // If the response will be setting a session cookie, don't overwrite it; just let it go.
        if (response.getCookies().containsKey(sessionCookieName)) {
            return;
        }

        // If the request doesn't have a session cookie, we're not going to renew one.
        if (!request.getCookies().containsKey(sessionCookieName)) {
            return;
        }

        Cookie requestCookie = request.getCookies().get(sessionCookieName);
        Optional<User> optionalUser = authenticator.authenticate(requestCookie);
        if (optionalUser.isPresent()) {
            sessionLoginResource.cookiesForUser(optionalUser.get())
                    .forEach(c -> response.getHeaders().add(HttpHeaders.SET_COOKIE, c));
        }
    }
}