src/main/java/org/onap/dmaap/commonauth/kafka/base/authorization/Cadi3AAFProvider.java

   1 /*******************************************************************************
   2  *  ============LICENSE_START=======================================================
   3  *  org.onap.dmaap
   4  *  ================================================================================
   5  *  Copyright © 2017 AT&T Intellectual Property. All rights reserved.
   6  *  ================================================================================
   7  *  Licensed under the Apache License, Version 2.0 (the "License");
   8  *  you may not use this file except in compliance with the License.
   9  *  You may obtain a copy of the License at
  10  *        http://www.apache.org/licenses/LICENSE-2.0
  11 *
  12  *  Unless required by applicable law or agreed to in writing, software
  13  *  distributed under the License is distributed on an "AS IS" BASIS,
  14  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *  See the License for the specific language governing permissions and
  16  *  limitations under the License.
  17  *  ============LICENSE_END=========================================================
  18  *
  19  *
  20  *******************************************************************************/
  21 package org.onap.dmaap.commonauth.kafka.base.authorization;
  22
  23 import java.io.FileInputStream;
  24 import java.io.IOException;
  25 import java.util.Map;
  26 import java.util.Properties;
  27
  28 import javax.security.auth.login.AppConfigurationEntry;
  29 import javax.security.auth.login.Configuration;
  30
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 import org.onap.aaf.cadi.CadiException;
  35 import org.onap.aaf.cadi.PropAccess;
  36 import org.onap.aaf.cadi.aaf.AAFPermission;
  37 import org.onap.aaf.cadi.aaf.v2_0.AAFAuthn;
  38 import org.onap.aaf.cadi.aaf.v2_0.AAFCon;
  39 import org.onap.aaf.cadi.aaf.v2_0.AAFConHttp;
  40 import org.onap.aaf.cadi.aaf.v2_0.AbsAAFLur;
  41 import org.onap.aaf.cadi.principal.UnAuthPrincipal;
  42
  43 public class Cadi3AAFProvider implements AuthorizationProvider {
  44
  45         private static PropAccess access;
  46         private static AAFCon<?> aafcon;
  47         private static final String CADI_PROPERTIES = "/opt/kafka/config/cadi.properties";
  48         private static final String AAF_LOCATOR_ENV = "aaf_locate_url";
  49         private static String apiKey = null;
  50         private static String kafkaUsername = null;
  51         private static AAFAuthn<?> aafAuthn;
  52         private static AbsAAFLur<AAFPermission> aafLur;
  53
  54         private static final Logger logger = LoggerFactory.getLogger(Cadi3AAFProvider.class);
  55
  56         static {
  57
  58                 Configuration config = Configuration.getConfiguration();
  59                 try {
  60                         if (config == null) {
  61                                 logger.error("CRITICAL ERROR|Check java.security.auth.login.config VM argument|");
  62                         } else {
  63                                 // read the section for KafkaServer
  64                                 AppConfigurationEntry[] entries = config.getAppConfigurationEntry("KafkaServer");
  65                                 if (entries == null) {
  66                                         logger.error(
  67                                                         "CRITICAL ERROR|Check config contents passed in java.security.auth.login.config VM argument|");
  68                                         kafkaUsername = "kafkaUsername";
  69                                         apiKey = "apiKey";
  70
  71                                 } else {
  72                                         for (int i = 0; i < entries.length; i++) {
  73                                                 AppConfigurationEntry entry = entries[i];
  74                                                 Map<String, ?> optionsMap = entry.getOptions();
  75                                                 kafkaUsername = (String) optionsMap.get("username");
  76                                                 apiKey = (String) optionsMap.get("password");
  77                                         }
  78                                 }
  79                         }
  80                 } catch (Exception e) {
  81                         logger.error("CRITICAL ERROR: JAAS configuration incorrectly set: " + e.getMessage());
  82                 }
  83         }
  84
  85         public static String getKafkaUsername() {
  86                 return kafkaUsername;
  87         }
  88
  89         public static AAFAuthn<?> getAafAuthn() throws CadiException {
  90                 if (aafAuthn == null) {
  91                         throw new CadiException("Cadi is uninitialized in Cadi3AAFProvider.getAafAuthn()");
  92                 }
  93                 return aafAuthn;
  94         }
  95
  96         public Cadi3AAFProvider() {
  97                 setup();
  98         }
  99
 100         private synchronized void setup() {
 101                 if (access == null) {
 102
 103                         Properties props = new Properties();
 104                         FileInputStream fis = null;
 105                         try {
 106                                 if (System.getProperty("CADI_PROPERTIES") != null) {
 107                                         fis = new FileInputStream(System.getProperty("CADI_PROPERTIES"));
 108                                 } else {
 109                                         fis = new FileInputStream(CADI_PROPERTIES);
 110                                 }
 111                                 try {
 112                                         props.load(fis);
 113                                         if (System.getenv(AAF_LOCATOR_ENV) != null)
 114                                                 props.setProperty(AAF_LOCATOR_ENV, System.getenv(AAF_LOCATOR_ENV));
 115                                         access = new PropAccess(props);
 116                                 } finally {
 117                                         fis.close();
 118                                 }
 119                         } catch (IOException e) {
 120                                 logger.error("Unable to load " + CADI_PROPERTIES);
 121                                 logger.error("Error", e);
 122                         }
 123                 }
 124
 125                 if (aafAuthn == null) {
 126                         try {
 127                                 aafcon = new AAFConHttp(access);
 128                                 aafAuthn = aafcon.newAuthn();
 129                                 aafLur = aafcon.newLur(aafAuthn);
 130                         } catch (final Exception e) {
 131                                 aafAuthn = null;
 132                                 if (access != null)
 133                                         access.log(e, "Failed to initialize AAF");
 134                         }
 135                 }
 136
 137         }
 138
 139         /**
 140          * Checks if a user has a particular permission
 141          * <p/>
 142          * Returns true if the permission in found
 143          */
 144         public boolean hasPermission(String userId, String permission, String instance, String action) {
 145                 boolean hasPermission = false;
 146                 try {
 147                         logger.info("^ Event at hasPermission to validate userid " + userId + " with " + permission + " " + instance
 148                                         + " " + action);
 149                         // AAF Style permissions are in the form
 150                         // Resource Name, Resource Type, Action
 151                         if (userId.equals("admin")) {
 152                                 hasPermission = true;
 153                                 return hasPermission;
 154                         }
 155                         AAFPermission perm = new AAFPermission(null, permission, instance, action);
 156                         if (aafLur != null) {
 157                                 hasPermission = aafLur.fish(new UnAuthPrincipal(userId), perm);
 158                                 logger.trace("Permission: " + perm.getKey() + " for user :" + userId + " found: " + hasPermission);
 159                         } else {
 160                                 logger.error("AAF client not initialized. Not able to find permissions.");
 161                         }
 162                 } catch (Exception e) {
 163                         logger.error("AAF client not initialized", e);
 164                 }
 165                 return hasPermission;
 166         }
 167
 168         public String getId() {
 169                 return "CADI_AAF_PROVIDER";
 170         }
 171
 172         public String authenticate(String userId, String password) throws Exception {
 173
 174                 logger.info("^Event received  with   username " + userId);
 175                 if (userId.equals(kafkaUsername)) {
 176                         if (password.equals(apiKey)) {
 177                                 logger.info("by passes the authentication for the admin " + kafkaUsername);
 178                                 return null;
 179                         } else {
 180                                 String errorMessage = "Authentication failed for user " + kafkaUsername;
 181                                 logger.error(errorMessage);
 182                                 return errorMessage;
 183                         }
 184
 185                 }
 186
 187                 String aafResponse = aafAuthn.validate(userId, password);
 188                 logger.info("aafResponse=" + aafResponse + " for " + userId);
 189
 190                 if (aafResponse != null) {
 191                         logger.error("Authentication failed for user ." + userId);
 192                 }
 193                 return aafResponse;
 194         }
 195
 196 }