/*
    * Copyright 2014 The Netty Project
    *
    * The Netty Project 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.
   */
  package io.netty.handler.ssl;
  
  import io.netty.internal.tcnative.SSL;
  import io.netty.internal.tcnative.SSLContext;
  
  import java.util.concurrent.locks.Lock;
  
  
  /**
   * {@link OpenSslSessionContext} implementation which offers extra methods which are only useful for the server-side.
   */
  public final class OpenSslServerSessionContext extends OpenSslSessionContext {
      OpenSslServerSessionContext(ReferenceCountedOpenSslContext context) {
          super(context);
      }
  
      @Override
      public void setSessionTimeout(int seconds) {
          if (seconds < 0) {
              throw new IllegalArgumentException();
          }
          Lock writerLock = context.ctxLock.writeLock();
          writerLock.lock();
          try {
              SSLContext.setSessionCacheTimeout(context.ctx, seconds);
          } finally {
              writerLock.unlock();
          }
      }
  
      @Override
      public int getSessionTimeout() {
          Lock readerLock = context.ctxLock.readLock();
          readerLock.lock();
          try {
              return (int) SSLContext.getSessionCacheTimeout(context.ctx);
          } finally {
              readerLock.unlock();
          }
      }
  
      @Override
      public void setSessionCacheSize(int size) {
          if (size < 0) {
              throw new IllegalArgumentException();
          }
          Lock writerLock = context.ctxLock.writeLock();
          writerLock.lock();
          try {
              SSLContext.setSessionCacheSize(context.ctx, size);
          } finally {
              writerLock.unlock();
          }
      }
  
      @Override
      public int getSessionCacheSize() {
          Lock readerLock = context.ctxLock.readLock();
          readerLock.lock();
          try {
              return (int) SSLContext.getSessionCacheSize(context.ctx);
          } finally {
              readerLock.unlock();
          }
      }
  
      @Override
      public void setSessionCacheEnabled(boolean enabled) {
          long mode = enabled ? SSL.SSL_SESS_CACHE_SERVER : SSL.SSL_SESS_CACHE_OFF;
  
          Lock writerLock = context.ctxLock.writeLock();
          writerLock.lock();
          try {
              SSLContext.setSessionCacheMode(context.ctx, mode);
          } finally {
              writerLock.unlock();
          }
      }
  
      @Override
      public boolean isSessionCacheEnabled() {
          Lock readerLock = context.ctxLock.readLock();
          readerLock.lock();
          try {
             return SSLContext.getSessionCacheMode(context.ctx) == SSL.SSL_SESS_CACHE_SERVER;
         } finally {
             readerLock.unlock();
         }
     }
 
     /**
      * Set the context within which session be reused (server side only)
      * See <a href="http://www.openssl.org/docs/ssl/SSL_CTX_set_session_id_context.html">
      *     man SSL_CTX_set_session_id_context</a>
      *
      * @param sidCtx can be any kind of binary data, it is therefore possible to use e.g. the name
      *               of the application and/or the hostname and/or service name
      * @return {@code true} if success, {@code false} otherwise.
      */
     public boolean setSessionIdContext(byte[] sidCtx) {
         Lock writerLock = context.ctxLock.writeLock();
         writerLock.lock();
         try {
             return SSLContext.setSessionIdContext(context.ctx, sidCtx);
         } finally {
             writerLock.unlock();
         }
     }
 }