org.jspare.forvertx.web.auth.BasicAuthProvider.java Source code

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Here is the source code for org.jspare.forvertx.web.auth.BasicAuthProvider.java

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/*
 * Copyright 2016 JSpare.org.
 *
 * 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 org.jspare.forvertx.web.auth;

import java.io.IOException;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.jspare.core.commons.Definitions;

import io.vertx.core.AsyncResult;
import io.vertx.core.Future;
import io.vertx.core.Handler;
import io.vertx.core.json.JsonObject;
import io.vertx.ext.auth.User;
import io.vertx.ext.web.RoutingContext;
import lombok.SneakyThrows;

public abstract class BasicAuthProvider implements AuthProvider {

    protected static final String DEFAULT_ERROR = "Unauthorized";
    protected static final String PASSWORD = "password";
    protected static final String USERNAME = "username";
    protected static final String AUTHORIZATION = "authorization";
    protected static final String BASIC = "Basic";
    protected static final String SPACE = " ";

    @Override
    public void authenticate(JsonObject authData, Handler<AsyncResult<User>> handler) {

        // Get authorization token
        String username = authData.getString(USERNAME);
        String password = authData.getString(PASSWORD);

        if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) {

            handler.handle(Future.failedFuture(DEFAULT_ERROR));
            return;
        }

        doAuthenticate(handler, username, password);
    }

    @Override
    @SneakyThrows(IOException.class)
    public JsonObject provideAuthdata(RoutingContext ctx) {

        JsonObject authData = new JsonObject();
        String authorization = ctx.request().getHeader(AUTHORIZATION);
        String[] splited = StringUtils.defaultIfEmpty(authorization, StringUtils.EMPTY).split(SPACE);
        if (splited.length == 2 && BASIC.equals(splited[0])) {

            String token = IOUtils.toString(java.util.Base64.getDecoder().decode(splited[1]),
                    Definitions.DEFAULT_CHARSET.name());
            String[] tSplited = token.split(":");
            authData.put(USERNAME, tSplited[0]);
            authData.put(PASSWORD, tSplited[1]);
        } else {

            ctx.response().putHeader("WWW-Authenticate", "Basic");
        }
        return authData;
    }

    protected abstract void doAuthenticate(Handler<AsyncResult<User>> handler, String username, String password);
}