com.google.testing.security.firingrange.tests.reverseclickjacking.UniversalReverseClickjackingSinglePage.java Source code

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Here is the source code for com.google.testing.security.firingrange.tests.reverseclickjacking.UniversalReverseClickjackingSinglePage.java

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/*
 * Copyright 2014 Google Inc. All rights reserved.
 *
 * 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.google.testing.security.firingrange.tests.reverseclickjacking;

import static com.google.common.net.UrlEscapers.urlFormParameterEscaper;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.base.Splitter;
import com.google.common.base.Strings;
import com.google.testing.security.firingrange.utils.Responses;
import com.google.testing.security.firingrange.utils.Templates;

import java.io.IOException;

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

/**
 * A test case for URC generating a single HTML page with vulnerable Javascript code and an
 * actionable object (a button).
 */
public class UniversalReverseClickjackingSinglePage extends HttpServlet {
    @VisibleForTesting
    static final String VULNERABLE_PARAMETER = "q";

    @Override
    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
        String parameterLocation, template;

        try {
            parameterLocation = Splitter.on('/').splitToList(request.getPathInfo()).get(2);
        } catch (IndexOutOfBoundsException e) {
            // The parameter location is not set. Return 400 later.
            Responses.sendError(response, "Please specify the location of the vulnerable parameter.", 400);
            return;
        }

        String vulnerableParameter = Strings.nullToEmpty(request.getParameter(VULNERABLE_PARAMETER));
        // Encode URL to prevent XSS
        vulnerableParameter = urlFormParameterEscaper().escape(vulnerableParameter);

        switch (parameterLocation) {
        case "ParameterInQuery":
            template = Templates.getTemplate("parameter_in_query.tmpl", getClass());
            template = Templates.replacePayload(template, vulnerableParameter);
            break;
        case "ParameterInFragment":
            template = Templates.getTemplate("parameter_in_fragment.tmpl", getClass());
            break;
        default:
            Responses.sendError(response, "Invalid location of the vulnerable parameter.", 400);
            return;
        }

        Responses.sendXssed(response, template);
    }
}