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/*******************************************************************************
* ============LICENSE_START=======================================================
* org.onap.dmaap
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
*
*******************************************************************************/
package com.att.nsa.dmaap.util;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.http.HttpStatus;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.stereotype.Component;
import com.att.dmf.mr.CambriaApiException;
import com.att.dmf.mr.exception.DMaaPResponseCode;
import com.att.dmf.mr.exception.ErrorResponse;
import ajsc.beans.interceptors.AjscInterceptor;
/**
* AJSC Intercepter implementation of ContentLengthFilter
*/
@Component
public class ContentLengthInterceptor implements AjscInterceptor{
private String defLength;
//private Logger log = Logger.getLogger(ContentLengthInterceptor.class.toString());
private static final EELFLogger log = EELFManager.getInstance().getLogger(ContentLengthInterceptor.class);
/**
* Intercepter method to intercept requests before processing
*/
@Override
public boolean allowOrReject(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse,
Map map) throws Exception {
log.info("inside Interceptor allowOrReject content length checking before pub/sub");
JSONObject jsonObj = null;
int requestLength = 0;
setDefLength(System.getProperty("maxcontentlength"));
try {
// retrieving content length from message header
if (null != httpservletrequest.getHeader("Content-Length")) {
requestLength = Integer.parseInt(httpservletrequest.getHeader("Content-Length"));
}
// retrieving encoding from message header
String transferEncoding = httpservletrequest.getHeader("Transfer-Encoding");
// checking for no encoding, chunked and requestLength greater then
// default length
if (null != transferEncoding && !(transferEncoding.contains("chunked"))
&& (requestLength > Integer.parseInt(getDefLength()))) {
jsonObj = new JSONObject().append("defaultlength", getDefLength())
.append("requestlength", requestLength);
log.error("message length is greater than default");
throw new CambriaApiException(jsonObj);
}
else if (null == transferEncoding && (requestLength > Integer.parseInt(getDefLength())))
{
jsonObj = new JSONObject().append("defaultlength", getDefLength()).append(
"requestlength", requestLength);
log.error("Request message is not chunked or request length is greater than default length");
throw new CambriaApiException(jsonObj);
}
else
{
//chain.doFilter(req, res);
return true;
}
} catch (CambriaApiException | NumberFormatException | JSONException e) {
log.info("Exception obj--"+e);
log.error("message size is greater then default"+e.getMessage());
String messg=e.toString();
if(jsonObj!=null){
messg=jsonObj.toString();
}
ErrorResponse errRes = new ErrorResponse(HttpStatus.SC_REQUEST_TOO_LONG,
DMaaPResponseCode.MSG_SIZE_EXCEEDS_MSG_LIMIT.getResponseCode(), System.getProperty("msg_size_exceeds")
+ messg);
log.info(errRes.toString());
map.put(HttpServletResponse.SC_INTERNAL_SERVER_ERROR,"test");
httpservletresponse.setStatus(HttpStatus.SC_REQUEST_TOO_LONG);
if(httpservletresponse.getOutputStream()!=null){
httpservletresponse.getOutputStream().write(errRes.toString().getBytes());
}
return false;
}
}
/**
* Get Default Content Length
* @return defLength
*/
public String getDefLength() {
return defLength;
}
/**
* Set Default Content Length
* @param defLength
*/
public void setDefLength(String defLength) {
this.defLength = defLength;
}
}
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