com.srotya.tau.ui.BapiLoginDAO.java Source code

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Here is the source code for com.srotya.tau.ui.BapiLoginDAO.java

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/**
 * Copyright 2016 Symantec Corporation.
 * 
 * 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.srotya.tau.ui;

import java.util.AbstractMap;
import java.util.Map.Entry;

import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.util.EntityUtils;

import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;

/**
 * @author ambud_sharma
 */
public class BapiLoginDAO {

    public static final String HMAC = "HMAC";
    public static final String X_SUBJECT_TOKEN = "X-Subject-Token";
    private static final String PASSWORD = "password";
    private static final String USERNAME = "username";

    public static Entry<String, String> authenticate(String authURL, String username, String password)
            throws Exception {
        CloseableHttpClient client = Utils.buildClient(authURL, 3000, 5000);
        HttpPost authRequest = new HttpPost(authURL);
        Gson gson = new Gson();
        JsonObject obj = new JsonObject();
        obj.addProperty(USERNAME, username);
        obj.addProperty(PASSWORD, password);
        StringEntity entity = new StringEntity(gson.toJson(obj), ContentType.APPLICATION_JSON);
        authRequest.setEntity(entity);
        CloseableHttpResponse response = client.execute(authRequest);
        if (response.getStatusLine().getStatusCode() == 200) {
            String tokenPair = EntityUtils.toString(response.getEntity());
            JsonArray ary = gson.fromJson(tokenPair, JsonArray.class);
            obj = ary.get(0).getAsJsonObject();
            String token = obj.get(X_SUBJECT_TOKEN).getAsString();
            String hmac = obj.get(HMAC).getAsString();
            return new AbstractMap.SimpleEntry<String, String>(token, hmac);
        } else {
            System.err.println("Login failed:" + response.getStatusLine().getStatusCode() + "\t"
                    + response.getStatusLine().getReasonPhrase());
            return null;
        }
    }

}