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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2019 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=========================================================
*/
package org.onap.aai.aaf.filters;
import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.regex.Pattern;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.io.IOUtils;
import org.onap.aai.aaf.auth.ResponseFormatter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Profile;
import org.springframework.stereotype.Component;
@Component
@Profile({AafProfiles.AAF_CERT_AUTHENTICATION, AafProfiles.AAF_AUTHENTICATION})
public class GremlinFilter {
private static final Logger LOGGER = LoggerFactory.getLogger(GremlinFilter.class);
private static final String ADVANCED = "advanced";
private static final String BASIC = "basic";
private static final Pattern ECHO_ENDPOINT = Pattern.compile("^.*/util/echo$");
String type;
String instance;
private CadiProps cadiProps;
@Autowired
public GremlinFilter(@Value("${permission.type}") String type, @Value("${permission.instance}") String instance,
CadiProps cadiProps) {
this.type = type;
this.instance = instance;
this.cadiProps = cadiProps;
}
public void doBasicAuthFilter(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain)
throws IOException, ServletException {
PayloadBufferingRequestWrapper requestBufferWrapper = new PayloadBufferingRequestWrapper(request);
if (ECHO_ENDPOINT.matcher(request.getRequestURI()).matches()) {
filterChain.doFilter(requestBufferWrapper, response);
}
String payload = IOUtils.toString(requestBufferWrapper.getInputStream(), StandardCharsets.UTF_8.name());
boolean containsWordGremlin = payload.contains("\"gremlin\"");
// if the requestBufferWrapper contains the word "gremlin" it's an "advanced" query needing an "advanced" role
String permissionBasic = String.format("%s|%s|%s", type, instance, BASIC);
String permissionAdvanced = String.format("%s|%s|%s", type, instance, ADVANCED);
boolean isAuthorized;
if (containsWordGremlin) {
isAuthorized = requestBufferWrapper.isUserInRole(permissionAdvanced);
} else {
isAuthorized = requestBufferWrapper.isUserInRole(permissionAdvanced)
|| requestBufferWrapper.isUserInRole(permissionBasic);
}
if (!isAuthorized) {
String name =
requestBufferWrapper.getUserPrincipal() != null ? requestBufferWrapper.getUserPrincipal().getName()
: "unknown";
LOGGER.info("User " + name + " does not have a role for "
+ (containsWordGremlin ? "gremlin" : "non-gremlin") + " query");
ResponseFormatter.errorResponse(request, response);
} else {
filterChain.doFilter(requestBufferWrapper, response);
}
}
}
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