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/*
* ============LICENSE_START==========================================
* ONAP Portal SDK
* ===================================================================
* 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============================================
*
*
*/
package org.onap.portalsdk.core.onboarding.util;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.codec.DecoderException;
import org.apache.commons.codec.binary.Hex;
import org.onap.aaf.cadi.CadiWrap;
import org.onap.aaf.cadi.Permission;
import org.onap.aaf.cadi.aaf.AAFPermission;
import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
import org.onap.portalsdk.core.onboarding.exception.PortalAPIException;
public class AuthUtil {
private static final String decodeValueOfForwardSlash = "2f";
private static final String decodeValueOfHyphen = "2d";
private static final String decodeValueOfAsterisk = "2a";
private static final EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(AuthUtil.class);
/*
* This method compares the portalApiPath against the urlPattern; splits the
* portalApiPath by "/" and compares each part with that of the urlPattern.
*
* Example: "xyz/1/abc" matches with the pattern "xyz/* /abc" but not with
* "xyz/*"
*
*/
public static Boolean matchPattern(String portalApiPath, String urlPattern) {
String[] path = portalApiPath.split("/");
if (path.length > 1) {
String[] roleFunctionArray = urlPattern.split("/");
boolean match = true;
if (roleFunctionArray.length == path.length) {
for (int i = 0; i < roleFunctionArray.length; i++) {
if (match) {
if (!roleFunctionArray[i].equals("*")) {
Pattern p = Pattern.compile(Pattern.quote(path[i]), Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher(roleFunctionArray[i]);
match = m.matches();
}
}
}
if (match)
return match;
}
} else {
if (portalApiPath.matches(urlPattern))
return true;
else if (urlPattern.equals("*"))
return true;
}
return false;
}
/**
*
* @param request
* @return returns list of AAFPermission of the requested MechId for all the namespaces
*/
public static List<AAFPermission> getAAFPermissions(HttpServletRequest request) {
CadiWrap wrapReq = (CadiWrap) request;
List<Permission> perms = wrapReq.getPermissions(wrapReq.getUserPrincipal());
List<AAFPermission> aafPermsList = new ArrayList<>();
for (Permission perm : perms) {
AAFPermission aafPerm = (AAFPermission) perm;
aafPermsList.add(aafPerm);
}
return aafPermsList;
}
/**
*
* @param request
* @return returns list of AAFPermission for the specific namespace
*/
public static List<AAFPermission> getNameSpacesAAFPermissions(String nameSpace,
List<AAFPermission> allPermissionsList) {
String type = nameSpace + ".url";
allPermissionsList.removeIf(perm -> (!perm.getType().equals(type)));
return allPermissionsList;
}
/**
*
* @param permsList
* @return returns the list of instaces of namespace
* @throws PortalAPIException
*/
public static List<String> getAllInstances(List<AAFPermission> permsList) throws PortalAPIException {
List<String> instanceList = permsList.stream().map(AAFPermission::getInstance).collect(Collectors.toList());
List<String> finalInstanceList = new ArrayList<>();
for (String instance : instanceList) {
String str = "";
if (instance.equals("*"))
str = instance;
else
str = decodeFunctionCode(instance);
finalInstanceList.add(str);
}
return finalInstanceList;
}
public static String decodeFunctionCode(String str) throws PortalAPIException {
String decodedString = str;
List<Pattern> decodingList = new ArrayList<>();
decodingList.add(Pattern.compile(decodeValueOfForwardSlash));
decodingList.add(Pattern.compile(decodeValueOfHyphen));
decodingList.add(Pattern.compile(decodeValueOfAsterisk));
for (Pattern xssInputPattern : decodingList) {
try {
decodedString = decodedString.replaceAll("%" + xssInputPattern,
new String(Hex.decodeHex(xssInputPattern.toString().toCharArray())));
} catch (DecoderException e) {
logger.error(EELFLoggerDelegate.errorLogger, "Decode Failed! for instance: "+ str);
throw new PortalAPIException("decode failed", e);
}
}
return decodedString;
}
/**
*
* @param request
* @param nameSpace application namespace
* @return boolean value if the access is allowed
* @throws PortalAPIException
*/
public static boolean isAccessAllowed(HttpServletRequest request, String nameSpace) throws PortalAPIException {
List<AAFPermission> aafPermsList = getAAFPermissions(request);
logger.debug(EELFLoggerDelegate.debugLogger, "Application nameSpace: "+ nameSpace);
if (nameSpace.isEmpty()) {
throw new PortalAPIException("NameSpace not Declared!");
}
List<AAFPermission> aafPermsFinalList = getNameSpacesAAFPermissions(nameSpace, aafPermsList);
List<String> finalInstanceList = getAllInstances(aafPermsFinalList);
String requestUri = request.getRequestURI().substring(request.getContextPath().length() + 1);
boolean isauthorized = false;
for (String str : finalInstanceList) {
if (!isauthorized)
isauthorized = matchPattern(requestUri, str);
}
return isauthorized;
}
}
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