1 files changed, 108 insertions, 0 deletions
diff --git a/epsdk-app-onap/src/main/java/org/onap/portalapp/filter/SecurityXssFilter.java b/epsdk-app-onap/src/main/java/org/onap/portalapp/filter/SecurityXssFilter.java
new file mode 100644
index 000000000..71ab7359a
--- /dev/null
+++ b/epsdk-app-onap/src/main/java/org/onap/portalapp/filter/SecurityXssFilter.java
@@ -0,0 +1,108 @@
+
+/*-
+ * ============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 java.io.UnsupportedEncodingException;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.commons.lang.StringUtils;
+import org.onap.portalapp.util.SecurityXssValidator;
+import org.springframework.web.filter.OncePerRequestFilter;
+import org.springframework.web.util.ContentCachingRequestWrapper;
+import org.springframework.web.util.ContentCachingResponseWrapper;
+import org.springframework.web.util.WebUtils;
+
+public class SecurityXssFilter extends OncePerRequestFilter {
+
+	private static final String BAD_REQUEST = "BAD_REQUEST";
+
+	private SecurityXssValidator validator = SecurityXssValidator.getInstance();
+
+	private static String getRequestData(final HttpServletRequest request) throws UnsupportedEncodingException {
+		String payload = null;
+		ContentCachingRequestWrapper wrapper = WebUtils.getNativeRequest(request, ContentCachingRequestWrapper.class);
+		if (wrapper != null) {
+			byte[] buf = wrapper.getContentAsByteArray();
+			if (buf.length > 0) {
+				payload = new String(buf, 0, buf.length, wrapper.getCharacterEncoding());
+			}
+		}
+		return payload;
+	}
+
+	private static String getResponseData(final HttpServletResponse response) throws IOException {
+		String payload = null;
+		ContentCachingResponseWrapper wrapper = WebUtils.getNativeResponse(response,
+				ContentCachingResponseWrapper.class);
+		if (wrapper != null) {
+			byte[] buf = wrapper.getContentAsByteArray();
+			if (buf.length > 0) {
+				payload = new String(buf, 0, buf.length, wrapper.getCharacterEncoding());
+				wrapper.copyBodyToResponse();
+			}
+		}
+		return payload;
+	}
+
+	@Override
+	protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
+			throws ServletException, IOException {
+
+		if (request.getMethod().equalsIgnoreCase("POST") || request.getMethod().equalsIgnoreCase("PUT")) {
+
+			HttpServletRequest requestToCache = new ContentCachingRequestWrapper(request);
+			HttpServletResponse responseToCache = new ContentCachingResponseWrapper(response);
+			filterChain.doFilter(requestToCache, responseToCache);
+			String requestData = getRequestData(requestToCache);
+			String responseData = getResponseData(responseToCache);
+			if (StringUtils.isNotBlank(requestData) && validator.denyXSS(requestData)) {
+				throw new SecurityException(BAD_REQUEST);
+			}
+
+		} else {
+			filterChain.doFilter(request, response);
+		}
+
+	}
+}