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/*-
* ============LICENSE_START==========================================
* ONAP Portal
* ===================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* ===================================================================
*
* Unless otherwise specified, all software contained herein is licensed
* under the Apache License, Version 2.0 (the "License");
* you may not use this software 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.
*
* Unless otherwise specified, all documentation contained herein is licensed
* under the Creative Commons License, Attribution 4.0 Intl. (the "License");
* you may not use this documentation except in compliance with the License.
* You may obtain a copy of the License at
*
* https://creativecommons.org/licenses/by/4.0/
*
* Unless required by applicable law or agreed to in writing, documentation
* 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 org.onap.portalapp.filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import org.apache.commons.lang.StringUtils;
import org.onap.portalapp.util.SecurityXssValidator;
import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
public class SecurityXssFilter implements Filter {
private EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(SecurityXssFilter.class);
private SecurityXssValidator validator = SecurityXssValidator.getInstance();
class SecurityRequestWrapper extends HttpServletRequestWrapper {
public SecurityRequestWrapper(HttpServletRequest servletRequest) {
super(servletRequest);
}
@Override
public String[] getParameterValues(String parameter) {
String[] values = super.getParameterValues(parameter);
if (values == null) {
return null;
}
int count = values.length;
String[] encodedValues = new String[count];
for (int i = 0; i < count; i++) {
encodedValues[i] = stripXss(values[i]);
}
return encodedValues;
}
private String stripXss(String value) {
return validator.stripXSS(value);
}
@Override
public String getParameter(String parameter) {
String value = super.getParameter(parameter);
if (StringUtils.isNotBlank(value)) {
value = stripXss(value);
}
return value;
}
@Override
public String getHeader(String name) {
String value = super.getHeader(name);
if (StringUtils.isNotBlank(value)) {
value = stripXss(value);
}
return value;
}
}
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void destroy() {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
try {
chain.doFilter(new SecurityRequestWrapper((HttpServletRequest) request), response);
} catch (Exception e) {
logger.error(EELFLoggerDelegate.errorLogger, "doFilter() failed", e);
}
}
}
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