org.wso2.carbon.identity.captcha.util.CaptchaHttpServletRequestWrapper.java Source code

Introduction

Here is the source code for org.wso2.carbon.identity.captcha.util.CaptchaHttpServletRequestWrapper.java

Source

/*
 * Copyright (c) 2016, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 *  WSO2 Inc. licenses this file to you 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.wso2.carbon.identity.captcha.util;

import org.apache.commons.io.IOUtils;

import javax.servlet.ServletInputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * Captcha Response Wrapper.
 */
public class CaptchaHttpServletRequestWrapper extends HttpServletRequestWrapper {

    private byte[] body;

    public CaptchaHttpServletRequestWrapper(HttpServletRequest httpServletRequest) throws IOException {
        super(httpServletRequest);
        // Read the request body and save it as a byte array
        InputStream is = super.getInputStream();
        body = IOUtils.toByteArray(is);
    }

    @Override
    public ServletInputStream getInputStream() throws IOException {
        return new ServletInputStreamImpl(new ByteArrayInputStream(body));
    }

    @Override
    public BufferedReader getReader() throws IOException {
        String enc = getCharacterEncoding();
        if (enc == null)
            enc = "UTF-8";
        return new BufferedReader(new InputStreamReader(getInputStream(), enc));
    }

    private class ServletInputStreamImpl extends ServletInputStream {

        private InputStream is;

        public ServletInputStreamImpl(InputStream is) {
            this.is = is;
        }

        public int read() throws IOException {
            return is.read();
        }

        public boolean markSupported() {
            return false;
        }

        public synchronized void mark(int i) {
            throw new RuntimeException(new IOException("mark/reset not supported"));
        }

        public synchronized void reset() throws IOException {
            throw new IOException("mark/reset not supported");
        }
    }
}