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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=========================================================
*
*
*******************************************************************************/
package org.onap.dmaap.commonauth.kafka.base.authorization;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.onap.aaf.cadi.CadiException;
import org.onap.aaf.cadi.PropAccess;
import org.onap.aaf.cadi.aaf.AAFPermission;
import org.onap.aaf.cadi.aaf.v2_0.AAFAuthn;
import org.onap.aaf.cadi.aaf.v2_0.AAFCon;
import org.onap.aaf.cadi.aaf.v2_0.AAFConHttp;
import org.onap.aaf.cadi.aaf.v2_0.AbsAAFLur;
import org.onap.aaf.cadi.principal.UnAuthPrincipal;
public class Cadi3AAFProvider implements AuthorizationProvider {
private static PropAccess access;
private static AAFCon<?> aafcon;
private static final String CADI_PROPERTIES = "/opt/kafka/config/cadi.properties";
private static final String AAF_LOCATOR_ENV = "aaf_locate_url";
private static final String MR_NAMESPACE = "org.onap.dmaap.mr";
public static AAFAuthn<?> getAafAuthn() throws CadiException {
if (aafAuthn == null) {
throw new CadiException("Cadi is uninitialized in Cadi3AAFProvider.getAafAuthn()");
}
return aafAuthn;
}
private static AAFAuthn<?> aafAuthn;
private static AbsAAFLur<AAFPermission> aafLur;
private static boolean props_ok = false;
private static final Logger logger = LoggerFactory.getLogger(Cadi3AAFProvider.class);
public Cadi3AAFProvider() {
setup();
}
private synchronized void setup() {
if (access == null) {
Properties props = new Properties();
FileInputStream fis = null;
try {
if (System.getProperty("CADI_PROPERTIES") != null) {
fis = new FileInputStream(System.getProperty("CADI_PROPERTIES"));
} else {
fis = new FileInputStream(CADI_PROPERTIES);
}
try {
props.load(fis);
if (System.getenv(AAF_LOCATOR_ENV) != null)
props.setProperty(AAF_LOCATOR_ENV, System.getenv(AAF_LOCATOR_ENV));
access = new PropAccess(props);
} finally {
fis.close();
}
} catch (IOException e) {
logger.error("Unable to load " + CADI_PROPERTIES);
logger.error("Error", e);
}
props_ok = true;
if (props_ok == false) {
return;
}
}
if (aafAuthn == null) {
try {
aafcon = new AAFConHttp(access);
aafAuthn = aafcon.newAuthn();
aafLur = aafcon.newLur(aafAuthn);
} catch (final Exception e) {
aafAuthn = null;
if (access != null)
access.log(e, "Failed to initialize AAF");
props_ok = false;
}
}
}
/**
* Checks if a user has a particular permission
* <p/>
* Returns true if the permission in found
*/
public boolean hasPermission(String userId, String permission, String instance, String action) {
boolean hasPermission = false;
try {
logger.info("^ Event at hasPermission to validate userid " + userId + " with " + permission + " " + instance
+ " " + action);
// AAF Style permissions are in the form
// Resource Name, Resource Type, Action
if (userId.equals("admin")) {
hasPermission = true;
return hasPermission;
}
AAFPermission perm = new AAFPermission(MR_NAMESPACE, permission, instance, action);
if (aafLur != null) {
hasPermission = aafLur.fish(new UnAuthPrincipal(userId), perm);
logger.trace("Permission: " + perm.getKey() + " for user :" + userId + " found: " + hasPermission);
} else {
logger.error("AAF client not initialized. Not able to find permissions.");
}
} catch (Exception e) {
logger.error("AAF client not initialized", e);
}
return hasPermission;
}
public String getId() {
return "CADI_AAF_PROVIDER";
}
public String authenticate(String userId, String password) throws Exception {
logger.info("^Event received with username " + userId);
if (userId.equals("admin")) {
logger.info("User Admin by passess AAF call ....");
return null;
}
String aafResponse = aafAuthn.validate(userId, password);
logger.info("aafResponse=" + aafResponse + " for " + userId);
if (aafResponse != null) {
logger.error("Authentication failed for user ." + userId);
}
return aafResponse;
}
}
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