com.orchestra.portale.externalauth.FacebookUtils.java Source code

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Here is the source code for com.orchestra.portale.externalauth.FacebookUtils.java

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/*
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package com.orchestra.portale.externalauth;

import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.JsonPrimitive;
import java.util.HashMap;
import java.util.Map;

import com.orchestra.portale.externalauth.NetworkUtils;
import com.orchestra.portale.externalauth.exception.FacebookException;
import java.io.BufferedReader;
import java.io.IOException;
import java.net.MalformedURLException;

/**
 *
 * @author antonio
 */
public class FacebookUtils {

    private static final String FACEBOOK_APP_ID = "1507821126169380";
    private static final String FACEBOOK_CLIENT_SECRET = "e1fd6ae79648fe69efabae4f6562efb0";
    private static final String FACEBOOK_EXCHANGE_KEY = "";
    private static final String FACEBOOK_APP_TOKEN = "1507821126169380|NDiYkHlIAtds-bBOvQDzjGzBzQs";
    private static final String FACEBOOK_REDIRECT_URL = "";
    private static final String FACEBOOK_GRAPH_URL = "https://graph.facebook.com/v2.2/";

    public static String getLoginURL() {
        String fb_url = "https://www.facebook.com/dialog/oauth/?" + "client_id=" + FACEBOOK_APP_ID
                + "&redirect_uri=" + FACEBOOK_REDIRECT_URL + "&scope=email" + "&display=page"
                + "&response_type=code";

        return fb_url;
    }

    public static String codeToToken(String code) throws FacebookException {

        String token = null;
        String access_token = null;

        try {
            String fb_code_url = "https://graph.facebook.com/oauth/access_token?" + "client_id=" + FACEBOOK_APP_ID
                    + "&redirect_uri=" + FACEBOOK_REDIRECT_URL + "&client_secret=" + FACEBOOK_CLIENT_SECRET
                    + "&code=" + code;

            BufferedReader tk_read = NetworkUtils.doConnection(fb_code_url);
            token = tk_read.readLine();

            //extract token from response
            if (token != null && token.contains("access_token")) {
                access_token = token.replace("access_token=", "").trim().replaceAll("&expire.*", "");
            }

        } catch (MalformedURLException ex) {
            throw new FacebookException();
        } catch (IOException ioex) {
            throw new FacebookException();
        }

        return access_token;
    }

    public static Boolean ifTokenValid(String access_token) throws FacebookException {

        Boolean is_valid = false;

        String fb_token_url = "https://graph.facebook.com/debug_token?" + "input_token=" + access_token
                + "&access_token=" + FACEBOOK_APP_TOKEN;

        try {

            BufferedReader ck_token_in = NetworkUtils.doConnection(fb_token_url);
            String ck_token = ck_token_in.readLine();

            JsonParser parser = new JsonParser();
            JsonElement element = parser.parse(ck_token);
            JsonObject j_object = (JsonObject) element;
            JsonObject data = (JsonObject) j_object.get("data");
            JsonElement validity = data.get("is_valid");
            is_valid = validity.getAsBoolean();

        } catch (MalformedURLException ex) {
            throw new FacebookException();
        } catch (IOException ioex) {
            throw new FacebookException();
        }

        return is_valid;
    }

    public static Map<String, String> getUserIDMail(String access_token) throws FacebookException {

        Map<String, String> userId_mail = new HashMap<String, String>();

        String url = "https://graph.facebook.com/v2.2/" + "me?fields=id,email" + "&access_token=" + access_token;

        try {

            BufferedReader fb_userIdMail_in = NetworkUtils.doConnection(url);
            String fb_userIdMail = fb_userIdMail_in.readLine();

            JsonParser parser = new JsonParser();
            JsonElement element = parser.parse(fb_userIdMail);
            JsonObject j_object = (JsonObject) element;

            String id = j_object.get("id").getAsString();
            String email = j_object.get("email").getAsString();

            userId_mail.put("id", id);
            userId_mail.put("email", email);

        } catch (MalformedURLException ex) {
            throw new FacebookException();
        } catch (IOException ioex) {
            throw new FacebookException();
        }

        return userId_mail;
    }

    public static Map<String, String> getUserData(String access_token) throws FacebookException {

        Map<String, String> user_data = new HashMap<String, String>();

        String url = "https://graph.facebook.com/v2.2/"
                + "me?fields=id,email,first_name,last_name,picture.type(large)" + "&access_token=" + access_token;

        try {

            BufferedReader fb_user_data_in = NetworkUtils.doConnection(url);
            String fb_user_data = fb_user_data_in.readLine();

            JsonParser parser = new JsonParser();
            JsonElement element = parser.parse(fb_user_data);
            JsonObject j_object = (JsonObject) element;

            user_data.put("id", j_object.get("id").getAsString());
            user_data.put("email", j_object.get("email").getAsString());
            user_data.put("firstName", j_object.get("first_name").getAsString());
            user_data.put("lastName", j_object.get("last_name").getAsString());

            //picture elaboration
            JsonObject pic_j = (JsonObject) j_object.get("picture");
            pic_j = (JsonObject) pic_j.get("data");
            String pic_url = pic_j.get("url").getAsString();
            user_data.put("img", pic_url);

        } catch (MalformedURLException ex) {
            throw new FacebookException();
        } catch (IOException ioex) {
            throw new FacebookException();
        }

        return user_data;
    }

}