com.wiwit.eplweb.util.youtube.api.Auth.java Source code

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Here is the source code for com.wiwit.eplweb.util.youtube.api.Auth.java

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/*
 * Copyright (c) 2012 Google 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 com.wiwit.eplweb.util.youtube.api;

import com.google.api.client.auth.oauth2.Credential;
import com.google.api.client.auth.oauth2.StoredCredential;
import com.google.api.client.extensions.java6.auth.oauth2.AuthorizationCodeInstalledApp;
import com.google.api.client.extensions.jetty.auth.oauth2.LocalServerReceiver;
import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow;
import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets;
import com.google.api.client.http.HttpTransport;
import com.google.api.client.http.javanet.NetHttpTransport;
import com.google.api.client.json.JsonFactory;
import com.google.api.client.json.jackson2.JacksonFactory;
import com.google.api.client.util.store.DataStore;
import com.google.api.client.util.store.FileDataStoreFactory;
import com.wiwit.eplweb.util.WebappProps;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.List;

/**
 * Shared class used by every sample. Contains methods for authorizing a user and caching credentials.
 */
public class Auth {

    /**
     * Define a global instance of the HTTP transport.
     */
    public static final HttpTransport HTTP_TRANSPORT = new NetHttpTransport();

    /**
     * Define a global instance of the JSON factory.
     */
    public static final JsonFactory JSON_FACTORY = new JacksonFactory();

    /**
     * This is the directory that will be used under the user's home directory where OAuth tokens will be stored.
     */
    //    private static final String CREDENTIALS_DIRECTORY = ".oauth-credentials";

    /**
     * Authorizes the installed application to access user's protected data.
     *
     * @param scopes              list of scopes needed to run youtube upload.
     * @param credentialDatastore name of the credential datastore to cache OAuth tokens
     */
    public static Credential authorize(List<String> scopes, String credentialDatastore) throws IOException {

        // Load client secrets.
        InputStream is = new FileInputStream(WebappProps.getClientScret());
        Reader clientSecretReader = new InputStreamReader(is);
        GoogleClientSecrets clientSecrets = GoogleClientSecrets.load(JSON_FACTORY, clientSecretReader);

        // This creates the credentials datastore 
        File f = new File(WebappProps.getGoogleCredentialsDirectory());

        FileDataStoreFactory fileDataStoreFactory = new FileDataStoreFactory(f);
        DataStore<StoredCredential> datastore = fileDataStoreFactory.getDataStore(credentialDatastore);

        GoogleAuthorizationCodeFlow flow = new GoogleAuthorizationCodeFlow.Builder(HTTP_TRANSPORT, JSON_FACTORY,
                clientSecrets, scopes).setCredentialDataStore(datastore).setAccessType("offline")
                        .setApprovalPrompt("force").build();

        // Build the local server and bind it to port 8080
        LocalServerReceiver localReceiver = new LocalServerReceiver.Builder().setPort(9001).build();

        // Authorize.
        return new AuthorizationCodeInstalledApp(flow, localReceiver).authorize("user");
    }
}