org.bimserver.servlets.JsonApiServlet.java Source code

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Here is the source code for org.bimserver.servlets.JsonApiServlet.java

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package org.bimserver.servlets;

/******************************************************************************
 * Copyright (C) 2009-2016  BIMserver.org
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see {@literal<http://www.gnu.org/licenses/>}.
 *****************************************************************************/

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStreamReader;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.IOUtils;
import org.bimserver.BimServer;
import org.bimserver.models.store.ServerState;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.base.Charsets;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import com.google.gson.stream.JsonReader;

public class JsonApiServlet extends SubServlet {
    private static final Logger LOGGER = LoggerFactory.getLogger(JsonApiServlet.class);

    public JsonApiServlet(BimServer bimServer, ServletContext servletContext) {
        super(bimServer, servletContext);
    }

    @Override
    public void service(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        if (request.getHeader("Origin") != null
                && (getBimServer().getServerInfo().getServerState() != ServerState.MIGRATION_REQUIRED
                        && !getBimServer().getServerSettingsCache().isHostAllowed(request.getHeader("Origin")))) {
            response.setStatus(403);
            return;
        }
        response.setHeader("Access-Control-Allow-Origin", request.getHeader("Origin"));
        response.setHeader("Access-Control-Allow-Headers", "Content-Type");
        response.setCharacterEncoding("UTF-8");
        try {
            ServletInputStream inputStream = request.getInputStream();
            byte[] bytes = IOUtils.toByteArray(inputStream); // Not streaming here, because we want to be able to show the request-data when it's not valid
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("Incoming JSON " + new String(bytes, Charsets.UTF_8));
            }
            JsonReader jsonReader = new JsonReader(
                    new InputStreamReader(new ByteArrayInputStream(bytes), Charsets.UTF_8));
            JsonParser parser = new JsonParser();
            JsonElement parse = parser.parse(jsonReader);
            if (parse instanceof JsonObject) {
                JsonObject jsonRequest = (JsonObject) parse;
                response.setHeader("Content-Type", "application/json");
                getBimServer().getJsonHandler().execute(jsonRequest, request, response.getWriter());
            } else {
                LOGGER.error("Invalid JSON request: " + new String(bytes, Charsets.UTF_8));
                response.setStatus(500);
            }
        } catch (IOException e) {
            LOGGER.error("", e);
            response.setStatus(500);
        }
    }
}