org.mycontroller.standalone.api.jaxrs.utils.RestUtils.java Source code

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Here is the source code for org.mycontroller.standalone.api.jaxrs.utils.RestUtils.java

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/*
 * Copyright 2015-2016 Jeeva Kandasamy (jkandasa@gmail.com)
 * and other contributors as indicated by the @author tags.
 *
 * 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.mycontroller.standalone.api.jaxrs.utils;

import java.io.IOException;
import java.util.List;
import java.util.StringTokenizer;

import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;

import org.jboss.resteasy.spi.HttpRequest;
import org.jboss.resteasy.util.Base64;
import org.mycontroller.standalone.api.jaxrs.mixins.NodeMixinForScript;
import org.mycontroller.standalone.db.tables.Node;
import org.mycontroller.standalone.db.tables.User;

import com.fasterxml.jackson.annotation.JsonInclude.Include;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;

/**
 * @author Jeeva Kandasamy (jkandasa)
 * @since 0.0.1
 */
public class RestUtils {

    private static final String AUTHORIZATION_PROPERTY = "Authorization";
    private static final String AUTHENTICATION_SCHEME = "Basic";
    private static ObjectMapper OBJECT_MAPPER = null;

    private RestUtils() {

    }

    public static ObjectMapper getObjectMapper() {
        if (OBJECT_MAPPER == null) {
            OBJECT_MAPPER = new ObjectMapper();
            OBJECT_MAPPER.configure(SerializationFeature.INDENT_OUTPUT, true); // this creates a 'configured' mapper
            OBJECT_MAPPER.setSerializationInclusion(Include.NON_NULL);
            OBJECT_MAPPER.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
            OBJECT_MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
            OBJECT_MAPPER.addMixIn(Node.class, NodeMixinForScript.class);
        }
        return OBJECT_MAPPER;
    }

    public static Response getResponse(Status status, Object entity) {
        return Response.status(status).header("Access-Control-Allow-Origin", "*")
                .header("Access-Control-Allow-Headers", "origin, content-type, accept, authorization")
                .header("Access-Control-Allow-Credentials", "true")
                .header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD")
                .header("Access-Control-Max-Age", "1209600").entity(entity).build();
    }

    public static Response getResponse(Status status) {
        return Response.status(status).header("Access-Control-Allow-Origin", "*")
                .header("Access-Control-Allow-Headers", "origin, content-type, accept, authorization")
                .header("Access-Control-Allow-Credentials", "true")
                .header("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD")
                .header("Access-Control-Max-Age", "1209600").build();
    }

    public static User getUser(HttpRequest request) {
        //Get request headers
        final HttpHeaders headers = request.getHttpHeaders();

        //Fetch authorization header
        final List<String> authorization = headers.getRequestHeader(AUTHORIZATION_PROPERTY);

        //If no authorization information present; nothing to do
        if (authorization == null || authorization.isEmpty()) {
            return null;
        }

        //Get encoded username and password
        final String encodedUserPassword = authorization.get(0).replaceFirst(AUTHENTICATION_SCHEME + " ", "");

        //Decode username and password
        String usernameAndPassword;
        try {
            usernameAndPassword = new String(Base64.decode(encodedUserPassword));
        } catch (IOException e) {
            return null;
        }

        //Split username and password tokens
        final StringTokenizer tokenizer = new StringTokenizer(usernameAndPassword, ":");
        final String username = tokenizer.nextToken();
        //final String password = tokenizer.nextToken();
        return UserMapper.getUser(username);
    }
}