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/*******************************************************************************
* ============LICENSE_START=======================================================
* org.onap.dmaap
* ================================================================================
* Copyright © 2017 AT&T Intellectual Property. All rights reserved.
* Modification copyright (C) 2021 Nordix Foundation.
* ================================================================================
* 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.Map;
import java.util.Properties;
import javax.security.auth.login.AppConfigurationEntry;
import javax.security.auth.login.Configuration;
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;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class Cadi3AAFProvider implements AuthorizationProvider {
private static PropAccess access;
private static AAFCon<?> aafcon;
private static final String CADI_PROPERTIES = "/etc/kafka/data/cadi.properties";
private static final String AAF_LOCATOR_ENV = "aaf_locate_url";
private static String apiKey = null;
private static String kafkaUsername = null;
private static AAFAuthn<?> aafAuthn;
private static AbsAAFLur<AAFPermission> aafLur;
private static boolean enableCadi = false;
private static final String ENABLE_CADI = "enableCadi";
private static final Logger logger = LoggerFactory.getLogger(Cadi3AAFProvider.class);
static {
if (System.getProperty(ENABLE_CADI) != null) {
if (System.getProperty(ENABLE_CADI).equals("true")) {
enableCadi = true;
}
}
else{
if (System.getenv(ENABLE_CADI) != null && System.getenv(ENABLE_CADI).equals("true")) {
enableCadi = true;
}
}
Configuration config = Configuration.getConfiguration();
try {
if (config == null) {
logger.error("CRITICAL ERROR|Check java.security.auth.login.config VM argument|");
} else {
// read the section for KafkaServer
AppConfigurationEntry[] entries = config.getAppConfigurationEntry("KafkaServer");
if (entries == null) {
logger.error(
"CRITICAL ERROR|Check config contents passed in java.security.auth.login.config VM argument|");
kafkaUsername = "kafkaUsername";
apiKey = "apiKey";
} else {
for (AppConfigurationEntry entry : entries) {
Map<String, ?> optionsMap = entry.getOptions();
kafkaUsername = (String) optionsMap.get("username");
apiKey = (String) optionsMap.get("password");
}
}
}
} catch (Exception e) {
logger.error("CRITICAL ERROR: JAAS configuration incorrectly set: {}", e.getMessage());
}
}
public static String getKafkaUsername() {
return kafkaUsername;
}
public static boolean isCadiEnabled() {
return enableCadi;
}
public Cadi3AAFProvider() {
setup();
}
private synchronized void setup() {
if (access == null) {
Properties props = new Properties();
FileInputStream fis;
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);
}
}
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");
}
}
}
/**
* 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 {} with {} {} {}", userId, 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(null, permission, instance, action);
if (aafLur != null) {
hasPermission = aafLur.fish(new UnAuthPrincipal(userId), perm);
logger.trace("Permission: {} for user : {} found: {}" , perm.getKey(), userId, 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 IOException {
logger.info("^Event received with username {}", userId);
if (!enableCadi) {
return null;
} else {
if (userId.equals(kafkaUsername)) {
if (password.equals(apiKey)) {
logger.info("by passes the authentication for the admin {}", kafkaUsername);
return null;
} else {
String errorMessage = "Authentication failed for user " + kafkaUsername;
logger.error(errorMessage);
return errorMessage;
}
}
String aafResponse = aafAuthn.validate(userId, password);
logger.info("aafResponse = {} for {}", aafResponse, userId);
if (aafResponse != null) {
logger.error("Authentication failed for user {}", userId);
}
return aafResponse;
}
}
}
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