org.exoplatform.clouddrive.gdrive.CredentialUtils.java Source code

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Here is the source code for org.exoplatform.clouddrive.gdrive.CredentialUtils.java

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/*
 * Copyright (C) 2012 eXo Platform SAS.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.exoplatform.clouddrive.gdrive;

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

import org.exoplatform.services.log.ExoLogger;
import org.exoplatform.services.log.Log;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.jackson2.JacksonFactory;

@Deprecated
public class CredentialUtils {

    protected static final Log LOG = ExoLogger.getLogger(CredentialUtils.class);

    private static GoogleAuthorizationCodeFlow flow = null;

    private static final List<String> SCOPES = Arrays.asList("https://www.googleapis.com/auth/userinfo.email",
            "https://www.googleapis.com/auth/userinfo.profile", "https://www.googleapis.com/auth/drive.readonly");

    private final String CLIENT_ID = "24067396563.apps.googleusercontent.com";

    private final String CLIENT_SECRET = "ZAWuUYVX7xhMFKPUl4H7d6QD";

    private final String REDIRECT_URI = "https://developers.google.com/oauthplayground";

    // CODE2 determined using the https://developers.google.com/oauthplayground.
    // Use client_id=24067396563.apps.googleusercontent.com,
    // client_secret=ZAWuUYVX7xhMFKPUl4H7d6QD and
    // scopes=https://www.googleapis.com/auth/userinfo.email
    // https://www.googleapis.com/auth/userinfo.profile
    // https://www.googleapis.com/auth/drive.readonly

    CredentialUtils() {

    }

    /**
     * Exchange an authorization code for OAuth 2.0 credentials.
     * 
     * @return OAuth 2.0 credentials.
     * @throws CodeExchangeException An error occurred.
     */
    public Credential getCredential(String code) throws IOException {
        GoogleAuthorizationCodeFlow flow = getFlow();
        GoogleTokenResponse response = flow.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute();
        return flow.createAndStoreCredential(response, null);
    }

    /**
     * Build an authorization flow and store it as a static class attribute.
     * 
     * @return GoogleAuthorizationCodeFlow instance.
     * @throws IOException Unable to load client_secrets.json.
     */
    public GoogleAuthorizationCodeFlow getFlow() throws IOException {
        if (flow == null) {
            HttpTransport httpTransport = new NetHttpTransport();
            JacksonFactory jsonFactory = new JacksonFactory();

            // (access_type=offline) if application needs to refresh access tokens
            // when the user is not
            // present at the browser.
            // If the value "approval_prompt" is force, then the user sees a
            // consent page even if they have previously given consent to your
            // application for a given set of scopes.
            flow = new GoogleAuthorizationCodeFlow.Builder(httpTransport, jsonFactory, CLIENT_ID, CLIENT_SECRET,
                    SCOPES).setAccessType("offline").setApprovalPrompt("force").build();
        }
        return flow;
    }

}