package org.eclipse.aether.transport.http;
   
   /*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * 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 limitations
   * under the License.
   */
  
  import java.util.Arrays;
  import java.util.Objects;
  
  import javax.net.ssl.HostnameVerifier;
  import javax.net.ssl.SSLContext;
  
  import org.eclipse.aether.RepositorySystemSession;
  import org.eclipse.aether.repository.AuthenticationContext;
  import org.eclipse.aether.util.ConfigUtils;
  
  /**
   * SSL-related configuration and cache key for connection pools (whose scheme registries are derived from this config).
   */
  final class SslConfig
  {
  
      private static final String CIPHER_SUITES = "https.cipherSuites";
  
      private static final String PROTOCOLS = "https.protocols";
  
      final SSLContext context;
  
      final HostnameVerifier verifier;
  
      final String[] cipherSuites;
  
      final String[] protocols;
  
      SslConfig( RepositorySystemSession session, AuthenticationContext authContext )
      {
          context =
              ( authContext != null ) ? authContext.get( AuthenticationContext.SSL_CONTEXT, SSLContext.class ) : null;
          verifier =
              ( authContext != null ) ? authContext.get( AuthenticationContext.SSL_HOSTNAME_VERIFIER,
                                                         HostnameVerifier.class ) : null;
  
          cipherSuites = split( get( session, CIPHER_SUITES ) );
          protocols = split( get( session, PROTOCOLS ) );
      }
  
      private static String get( RepositorySystemSession session, String key )
      {
          String value = ConfigUtils.getString( session, null, "aether.connector." + key, key );
          if ( value == null )
          {
              value = System.getProperty( key );
          }
          return value;
      }
  
      private static String[] split( String value )
      {
          if ( value == null || value.isEmpty() )
          {
              return null;
          }
          return value.split( ",+" );
      }
  
      @Override
      public boolean equals( Object obj )
      {
          if ( this == obj )
          {
              return true;
          }
          if ( obj == null || !getClass().equals( obj.getClass() ) )
          {
              return false;
          }
          SslConfig that = (SslConfig) obj;
          return Objects.equals( context, that.context )
                  && Objects.equals( verifier, that.verifier )
                  && Arrays.equals( cipherSuites, that.cipherSuites )
                  && Arrays.equals( protocols, that.protocols );
      }
  
      @Override
     public int hashCode()
     {
         int hash = 17;
         hash = hash * 31 + hash( context );
         hash = hash * 31 + hash( verifier );
         hash = hash * 31 + Arrays.hashCode( cipherSuites );
         hash = hash * 31 + Arrays.hashCode( protocols );
         return hash;
     }
 
     private static int hash( Object obj )
     {
         return obj != null ? obj.hashCode() : 0;
     }
 
 }