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   * Licensed to the Apache Software Foundation (ASF) under one
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   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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
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  package org.apache.cassandra.auth;
  
  import java.net.InetSocketAddress;
  import java.util.Collections;
  import java.util.HashMap;
  
  import org.junit.Assert;
  import org.junit.Before;
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.SchemaLoader;
  import org.apache.cassandra.config.Config;
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.config.ParameterizedClass;
  import org.apache.cassandra.cql3.CIDR;
  import org.apache.cassandra.cql3.CQLTester;
  import org.apache.cassandra.db.Keyspace;
  import org.apache.cassandra.exceptions.ConfigurationException;
  import org.apache.cassandra.service.ClientState;
  
  import static org.apache.cassandra.auth.AuthKeyspace.CIDR_GROUPS;
  import static org.apache.cassandra.auth.AuthKeyspace.CIDR_PERMISSIONS;
  import static org.apache.cassandra.schema.SchemaConstants.AUTH_KEYSPACE_NAME;
  
  public class CassandraCIDRAuthorizerMonitorModeTest extends CQLTester
  {
      private static final AuthTestUtils.LocalCassandraCIDRAuthorizer cidrAuthorizer =
          new AuthTestUtils.LocalCassandraCIDRAuthorizer(ICIDRAuthorizer.CIDRAuthorizerMode.MONITOR);
  
      @BeforeClass
      public static void defineSchema() throws ConfigurationException
      {
          SchemaLoader.setupAuth(new AuthTestUtils.LocalCassandraRoleManager(),
                                 new AuthTestUtils.LocalPasswordAuthenticator(),
                                 new AuthTestUtils.LocalCassandraAuthorizer(),
                                 new AuthTestUtils.LocalCassandraNetworkAuthorizer(),
                                 cidrAuthorizer);
          AuthCacheService.initializeAndRegisterCaches();
          AuthTestUtils.setupSuperUser();
      }
  
      @Before
      public void before()
      {
          Keyspace.open(AUTH_KEYSPACE_NAME).getColumnFamilyStore(CIDR_GROUPS).truncateBlocking();
          Keyspace.open(AUTH_KEYSPACE_NAME).getColumnFamilyStore(CIDR_PERMISSIONS).truncateBlocking();
          cidrAuthorizer.getCidrPermissionsCache().invalidate();
      }
  
      private void testValidCidrAccess(String userName, String ip)
      {
          InetSocketAddress ipAddr = new InetSocketAddress(ip, 0);
  
          AuthenticatedUser user = new AuthenticatedUser(userName);
          Assert.assertTrue(user.hasAccessFromIp(ipAddr));
  
          ClientState clientState = ClientState.forExternalCalls(ipAddr);
          clientState.login(user);
          clientState.validateLogin(); // expect no exception
      }
  
      @Test
      public void testCidrAccesses()
      {
          AuthTestUtils.createUsersWithCidrAccess(Collections.singletonMap("user1",
                                                                           Collections.singletonList("cidrGroup1")));
          AuthTestUtils.insertCidrsMappings(Collections.singletonMap("cidrGroup1",
                                                                     Collections.singletonList(
                                                                     CIDR.getInstance("10.20.30.5/24"))));
  
          testValidCidrAccess("user1", "10.20.30.5");
          testValidCidrAccess("user1", "20.20.30.5");
      }
  
      @Test
      public void testNonexistingCidrLogin()
      {
          AuthTestUtils.createUsersWithCidrAccess(Collections.singletonMap("user11",
                                                                           Collections.singletonList("cidrGroup11")));
          AuthTestUtils.insertCidrsMappings(Collections.singletonMap("cidrGroup11",
                                                                     Collections.singletonList(
                                                                     CIDR.getInstance("200.30.40.60/24"))));
  
          testValidCidrAccess("user11", "250.30.40.60");
      }
  
      @Test
      public void testCidrChecksForSuperUsers()
      {
          testValidCidrAccess(CassandraRoleManager.DEFAULT_SUPERUSER_NAME, "10.20.30.5");
          testValidCidrAccess(CassandraRoleManager.DEFAULT_SUPERUSER_NAME, "200.30.40.60");
  
          Config conf = DatabaseDescriptor.getRawConfig();
          conf.cidr_authorizer = new ParameterizedClass(CassandraCIDRAuthorizer.class.getName(), new HashMap<>());
          conf.cidr_authorizer.parameters.put("cidr_checks_for_superusers", String.valueOf(true));
  
          AuthTestUtils.insertCidrsMappings(Collections.singletonMap("cidrGroup1",
                                                                     Collections.singletonList(
                                                                     CIDR.getInstance("200.30.40.60/24"))));
          AuthTestUtils.auth("alter role %s with access from cidrs {'cidrGroup1'}",
                             CassandraRoleManager.DEFAULT_SUPERUSER_NAME);
          cidrAuthorizer.getCidrPermissionsCache().invalidate();
  
          testValidCidrAccess(CassandraRoleManager.DEFAULT_SUPERUSER_NAME, "10.20.30.5");
          testValidCidrAccess(CassandraRoleManager.DEFAULT_SUPERUSER_NAME, "200.30.40.60");
      }
  }
  