MultipartAcceptingServlet.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual 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 io.undertow.servlet.test.security;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collection;
import jakarta.servlet.ServletException;
import jakarta.servlet.http.HttpServlet;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import jakarta.servlet.http.Part;

/**
 * A servlet that expects to receive a multipart post request with 2 parts.
 */
public class MultipartAcceptingServlet extends HttpServlet {

    @Override
    protected void doPost(final HttpServletRequest req, final HttpServletResponse resp) throws ServletException, IOException {
        Collection<Part> parts = req.getParts();
        if (parts.size() != 2) {
            resp.setStatus(418);
        }
        for (Part part: parts) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(part.getInputStream()));
            if (!reader.readLine().startsWith("0123")) {
                resp.setStatus(418);
            }
        }
    }

}