net.codestory.http.filters.twitter.TwitterAuthenticator.java Source code

Introduction

Here is the source code for net.codestory.http.filters.twitter.TwitterAuthenticator.java

Source

/**
 * Copyright (C) 2013-2014 all@code-story.net
 *
 * 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 net.codestory.http.filters.twitter;

import java.net.*;
import java.util.*;

import twitter4j.*;
import twitter4j.auth.*;

public class TwitterAuthenticator implements Authenticator {
    private final TwitterFactory twitterFactory;
    private final Map<String, RequestToken> oauthRequestByToken;

    public TwitterAuthenticator(TwitterFactory twitterFactory) {
        this.twitterFactory = twitterFactory;
        this.oauthRequestByToken = new HashMap<>();
    }

    @Override
    public URI getAuthenticateURI(String callbackUri) {
        Twitter twitter = twitterFactory.getInstance();
        try {
            RequestToken requestToken = twitter.getOAuthRequestToken(callbackUri);
            oauthRequestByToken.put(requestToken.getToken(), requestToken);
            return URI.create(requestToken.getAuthenticationURL());
        } catch (TwitterException e) {
            throw new AuthenticationException(e);
        }
    }

    @Override
    public User authenticate(String oauthToken, String oauthVerifier) {
        Twitter twitter = twitterFactory.getInstance();
        try {
            AccessToken accessToken = twitter.getOAuthAccessToken(oauthRequestByToken.remove(oauthToken),
                    oauthVerifier);

            twitter4j.User user = twitter.users().showUser(accessToken.getUserId());

            return new User(accessToken.getUserId(), accessToken.getScreenName(), accessToken.getToken(),
                    accessToken.getTokenSecret(), user.getBiggerProfileImageURL());
        } catch (TwitterException e) {
            throw new AuthenticationException(e);
        }
    }
}