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 = "/etc/kafka/data/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         private static boolean enableCadi = false;
  54         private static final Logger logger = LoggerFactory.getLogger(Cadi3AAFProvider.class);
  55
  56         static {
  57
  58                 if (System.getenv("enableCadi") != null && System.getenv("enableCadi").equals("true")) {
  59                         enableCadi = true;
  60                 }
  61                 Configuration config = Configuration.getConfiguration();
  62                 try {
  63                         if (config == null) {
  64                                 logger.error("CRITICAL ERROR|Check java.security.auth.login.config VM argument|");
  65                         } else {
  66                                 // read the section for KafkaServer
  67                                 AppConfigurationEntry[] entries = config.getAppConfigurationEntry("KafkaServer");
  68                                 if (entries == null) {
  69                                         logger.error(
  70                                                         "CRITICAL ERROR|Check config contents passed in java.security.auth.login.config VM argument|");
  71                                         kafkaUsername = "kafkaUsername";
  72                                         apiKey = "apiKey";
  73
  74                                 } else {
  75                                         for (int i = 0; i < entries.length; i++) {
  76                                                 AppConfigurationEntry entry = entries[i];
  77                                                 Map<String, ?> optionsMap = entry.getOptions();
  78                                                 kafkaUsername = (String) optionsMap.get("username");
  79                                                 apiKey = (String) optionsMap.get("password");
  80                                         }
  81                                 }
  82                         }
  83                 } catch (Exception e) {
  84                         logger.error("CRITICAL ERROR: JAAS configuration incorrectly set: " + e.getMessage());
  85                 }
  86         }
  87
  88         public static String getKafkaUsername() {
  89                 return kafkaUsername;
  90         }
  91
  92         public static boolean isCadiEnabled() {
  93
  94                 return enableCadi;
  95         }
  96
  97         public static AAFAuthn<?> getAafAuthn() throws CadiException {
  98                 if (aafAuthn == null) {
  99                         throw new CadiException("Cadi is uninitialized in Cadi3AAFProvider.getAafAuthn()");
 100                 }
 101                 return aafAuthn;
 102         }
 103
 104         public Cadi3AAFProvider() {
 105                 setup();
 106         }
 107
 108         private synchronized void setup() {
 109                 if (access == null) {
 110
 111                         Properties props = new Properties();
 112                         FileInputStream fis = null;
 113                         try {
 114                                 if (System.getProperty("CADI_PROPERTIES") != null) {
 115                                         fis = new FileInputStream(System.getProperty("CADI_PROPERTIES"));
 116                                 } else {
 117                                         fis = new FileInputStream(CADI_PROPERTIES);
 118                                 }
 119                                 try {
 120                                         props.load(fis);
 121                                         if (System.getenv(AAF_LOCATOR_ENV) != null)
 122                                                 props.setProperty(AAF_LOCATOR_ENV, System.getenv(AAF_LOCATOR_ENV));
 123                                         access = new PropAccess(props);
 124                                 } finally {
 125                                         fis.close();
 126                                 }
 127                         } catch (IOException e) {
 128                                 logger.error("Unable to load " + CADI_PROPERTIES);
 129                                 logger.error("Error", e);
 130                         }
 131                 }
 132
 133                 if (aafAuthn == null) {
 134                         try {
 135                                 aafcon = new AAFConHttp(access);
 136                                 aafAuthn = aafcon.newAuthn();
 137                                 aafLur = aafcon.newLur(aafAuthn);
 138                         } catch (final Exception e) {
 139                                 aafAuthn = null;
 140                                 if (access != null)
 141                                         access.log(e, "Failed to initialize AAF");
 142                         }
 143                 }
 144
 145         }
 146
 147         /**
 148          * Checks if a user has a particular permission
 149          * <p/>
 150          * Returns true if the permission in found
 151          */
 152         public boolean hasPermission(String userId, String permission, String instance, String action) {
 153                 boolean hasPermission = false;
 154                 try {
 155                         logger.info("^ Event at hasPermission to validate userid " + userId + " with " + permission + " " + instance
 156                                         + " " + action);
 157                         // AAF Style permissions are in the form
 158                         // Resource Name, Resource Type, Action
 159                         if (userId.equals("admin")) {
 160                                 hasPermission = true;
 161                                 return hasPermission;
 162                         }
 163                         AAFPermission perm = new AAFPermission(null, permission, instance, action);
 164                         if (aafLur != null) {
 165                                 hasPermission = aafLur.fish(new UnAuthPrincipal(userId), perm);
 166                                 logger.trace("Permission: " + perm.getKey() + " for user :" + userId + " found: " + hasPermission);
 167                         } else {
 168                                 logger.error("AAF client not initialized. Not able to find permissions.");
 169                         }
 170                 } catch (Exception e) {
 171                         logger.error("AAF client not initialized", e);
 172                 }
 173                 return hasPermission;
 174         }
 175
 176         public String getId() {
 177                 return "CADI_AAF_PROVIDER";
 178         }
 179
 180         public String authenticate(String userId, String password) throws Exception {
 181
 182                 logger.info("^Event received  with   username " + userId);
 183
 184                 boolean enableCadi = System.getenv("enableCadi") == null ? true : false;
 185                 if (!enableCadi) {
 186                         return null;
 187                 } else {
 188                         if (userId.equals(kafkaUsername)) {
 189                                 if (password.equals(apiKey)) {
 190                                         logger.info("by passes the authentication for the admin " + kafkaUsername);
 191                                         return null;
 192                                 } else {
 193                                         String errorMessage = "Authentication failed for user " + kafkaUsername;
 194                                         logger.error(errorMessage);
 195                                         return errorMessage;
 196                                 }
 197
 198                         }
 199
 200                         String aafResponse = aafAuthn.validate(userId, password);
 201                         logger.info("aafResponse=" + aafResponse + " for " + userId);
 202
 203                         if (aafResponse != null) {
 204                                 logger.error("Authentication failed for user ." + userId);
 205                         }
 206                         return aafResponse;
 207                 }
 208
 209         }
 210
 211 }