com.sintef_energy.ubisolar.auth.Auth.java Source code

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Here is the source code for com.sintef_energy.ubisolar.auth.Auth.java

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/*
 * Licensed to UbiCollab.org under one or more contributor
 * license agreements.  See the NOTICE file distributed
 * with this work for additional information regarding
 * copyright ownership. UbiCollab.org licenses this file
 * to you 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.sintef_energy.ubisolar.auth;

import com.google.common.base.Optional;
import com.yammer.dropwizard.auth.AuthenticationException;
import com.yammer.dropwizard.auth.Authenticator;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * Created by Hvard on 26.03.14.
 */
public class Auth implements Authenticator<String, User> {

    @Override
    public Optional<User> authenticate(String token) throws AuthenticationException {
        String json = makeJsonRequest(token);
        if (!json.regionMatches(true, 0, "{\"error\":", 0, 9)) {
            return Optional.of(new User(token));
        }
        return null;
    }

    private String makeJsonRequest(String token) {
        URL url;
        HttpURLConnection conn;
        BufferedReader rd;
        String line;
        String result = "";
        try {
            url = new URL("http://graph.facebook.com/me?token=" + token);
            conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setRequestProperty("Content-Type", "application/json");
            rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            while ((line = rd.readLine()) != null) {
                result += line;
            }
            rd.close();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        System.out.println(result);
        return result;
    }
}