Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 Copyright 2017 IBM Corp.
 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.
 */

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

public class Main {
    public static final String BEARER = "Bearer";
    public static final String WWW_AUTHENTICATE_HEADER = "WWW-Authenticate";
    private static final String AUTH_SCOPE = "appid";

    public static boolean isAuthorizationRequired(int statusCode, String responseAuthorizationHeader) {
        return isAuthorizationRequired(statusCode, Arrays.asList(responseAuthorizationHeader));
    }

    public static boolean isAuthorizationRequired(HttpURLConnection urlConnection) throws IOException {
        return isAuthorizationRequired(urlConnection.getResponseCode(),
                urlConnection.getHeaderField(WWW_AUTHENTICATE_HEADER));
    }

    /**
     * Check if the params came from response that requires authorization
     * @param statusCode status code of the responce
     * @param wwwAuthenticateHeaders list of WWW-Authenticate headers
     * @return true if status is 401 or 403 and The value of the header starts with 'Bearer' and that it contains ""imfAuthentication""
     */
    private static boolean isAuthorizationRequired(int statusCode, List<String> wwwAuthenticateHeaders) {

        if ((statusCode == 401 || statusCode == 403) && wwwAuthenticateHeaders != null) {

            //It is possible that there will be more then one header for this header-name. This is why we need the loop here.
            for (String header : wwwAuthenticateHeaders) {
                if (header != null && header.toLowerCase().startsWith(BEARER.toLowerCase())
                        && header.toLowerCase().contains(AUTH_SCOPE.toLowerCase())) {
                    return true;
                }
            }
        }

        return false;
    }
}