com.marklogic.samplestack.web.SessionController.java Source code

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Here is the source code for com.marklogic.samplestack.web.SessionController.java

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/*
 * Copyright 2012-2014 MarkLogic 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.marklogic.samplestack.web;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.web.csrf.CsrfToken;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;

import com.fasterxml.jackson.databind.JsonNode;

/**
 * Controller to provide initial session information to the browser,
 * for CSRF protection and Login session.
 */
@RestController
public class SessionController {

    @Autowired
    private JsonHttpResponse errors;

    /**
     * Exposes endpoint that returns CSRF token information and a session for use in login.
     * @param request The Http Request.
     * @param response The Http response.
     * @return A JsonNode with bare-bones acknowledgement.
     */
    @RequestMapping(value = "session", method = RequestMethod.GET)
    public @ResponseBody JsonNode hello(HttpServletRequest request, HttpServletResponse response) {

        CsrfToken csrfToken = (CsrfToken) request.getAttribute("_csrf");

        String headerName = csrfToken.getHeaderName();
        String token = csrfToken.getToken();
        HttpServletResponseWrapper responseWrapper = new HttpServletResponseWrapper(response);

        responseWrapper.addHeader(headerName, token);
        return errors.makeJsonResponse(200, "New Session");
    }
}