Java Status類代碼示例

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
 * Encrypt provided buffer. Encrypted data returned by getOutNetBuffer().
 * 
 * @param src
 *            data to encrypt
 * @throws SSLException
 *             on errors
 */
/* no qualifier */void encrypt(ByteBuffer src) throws SSLException {
    if (!handshakeComplete) {
        throw new IllegalStateException();
    }

    if (!src.hasRemaining()) {
        if (outNetBuffer == null) {
            outNetBuffer = emptyBuffer;
        }
        return;
    }

    createOutNetBuffer(src.remaining());

    // Loop until there is no more data in src
    while (src.hasRemaining()) {

        SSLEngineResult result = sslEngine.wrap(src, outNetBuffer.buf());
        if (result.getStatus() == SSLEngineResult.Status.OK) {
            if (result.getHandshakeStatus() == SSLEngineResult.HandshakeStatus.NEED_TASK) {
                doTasks();
            }
        } else if (result.getStatus() == SSLEngineResult.Status.BUFFER_OVERFLOW) {
            outNetBuffer.capacity(outNetBuffer.capacity() << 1);
            outNetBuffer.limit(outNetBuffer.capacity());
        } else {
            throw new SSLException("SSLEngine error during encrypt: " + result.getStatus() + " src: " + src
                    + "outNetBuffer: " + outNetBuffer);
        }
    }

    outNetBuffer.flip();
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
 * @param res
 * @throws SSLException
 */
private void checkStatus(SSLEngineResult res) throws SSLException {

    SSLEngineResult.Status status = res.getStatus();

    /*
     * The status may be:
     * OK - Normal operation
     * OVERFLOW - Should never happen since the application buffer is sized to hold the maximum
     * packet size.
     * UNDERFLOW - Need to read more data from the socket. It's normal.
     * CLOSED - The other peer closed the socket. Also normal.
     */
    if (status == SSLEngineResult.Status.BUFFER_OVERFLOW) {
        throw new SSLException("SSLEngine error during decrypt: " + status + " inNetBuffer: " + inNetBuffer
                + "appBuffer: " + appBuffer);
    }
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
private void checkResult(SSLEngineResult result, boolean wrap)
        throws SSLException {

    handshakeStatus = result.getHandshakeStatus();
    resultStatus = result.getStatus();

    if (resultStatus != Status.OK &&
            (wrap || resultStatus != Status.BUFFER_UNDERFLOW)) {
        throw new SSLException("TODO");
    }
    if (wrap && result.bytesConsumed() != 0) {
        throw new SSLException("TODO");
    }
    if (!wrap && result.bytesProduced() != 0) {
        throw new SSLException("TODO");
    }
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
 * Sends a SSL close message, will not physically close the connection here.<br>
 * To close the connection, you could do something like
 * <pre><code>
 *   close();
 *   while (isOpen() && !myTimeoutFunction()) Thread.sleep(25);
 *   if ( isOpen() ) close(true); //forces a close if you timed out
 * </code></pre>
 * @throws IOException if an I/O error occurs
 * @throws IOException if there is data on the outgoing network buffer and we are unable to flush it
 * TODO Implement this java.io.Closeable method
 */
@Override
public void close() throws IOException {
    if (closing) return;
    closing = true;
    sslEngine.closeOutbound();

    if (!flush(netOutBuffer)) {
        throw new IOException("Remaining data in the network buffer, can't send SSL close message, force a close with close(true) instead");
    }
    //prep the buffer for the close message
    netOutBuffer.clear();
    //perform the close, since we called sslEngine.closeOutbound
    SSLEngineResult handshake = sslEngine.wrap(getEmptyBuf(), netOutBuffer);
    //we should be in a close state
    if (handshake.getStatus() != SSLEngineResult.Status.CLOSED) {
        throw new IOException("Invalid close state, will not send network data.");
    }
    //prepare the buffer for writing
    netOutBuffer.flip();
    //if there is data to be written
    flush(netOutBuffer);

    //is the channel closed?
    closed = (!netOutBuffer.hasRemaining() && (handshake.getHandshakeStatus() != HandshakeStatus.NEED_WRAP));
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
public SSLSocketChannel2( SocketChannel channel , SSLEngine sslEngine , ExecutorService exec , SelectionKey key ) throws IOException {
	if( channel == null || sslEngine == null || exec == null )
		throw new IllegalArgumentException( "parameter must not be null" );

	this.socketChannel = channel;
	this.sslEngine = sslEngine;
	this.exec = exec;

	readEngineResult = writeEngineResult = new SSLEngineResult( Status.BUFFER_UNDERFLOW, sslEngine.getHandshakeStatus(), 0, 0 ); // init to prevent NPEs

	tasks = new ArrayList<Future<?>>( 3 );
	if( key != null ) {
		key.interestOps( key.interestOps() | SelectionKey.OP_WRITE );
		this.selectionKey = key;
	}
	createBuffers( sslEngine.getSession() );
	// kick off handshake
	socketChannel.write( wrap( emptybuffer ) );// initializes res
	processHandshake();
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
public SSLSocketChannel2(SocketChannel channel, SSLEngine sslEngine, ExecutorService exec, SelectionKey key) throws IOException {
    if (channel == null || sslEngine == null || exec == null) {
        throw new IllegalArgumentException("parameter must not be null");
    }

    this.socketChannel = channel;
    this.sslEngine = sslEngine;
    this.exec = exec;

    readEngineResult = writeEngineResult = new SSLEngineResult(Status.BUFFER_UNDERFLOW, sslEngine.getHandshakeStatus(), 0, 0); // init to prevent NPEs

    tasks = new ArrayList<Future<?>>(3);
    if (key != null) {
        key.interestOps(key.interestOps() | SelectionKey.OP_WRITE);
        this.selectionKey = key;
    }
    createBuffers(sslEngine.getSession());
    // kick off handshake
    socketChannel.write(wrap(emptybuffer));// initializes res
    processHandshake();
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
public int write(ByteBuffer src) throws IOException {
    if (!isHandShakeComplete()) {
        processHandshake();
        return 0;
    }
    // assert ( bufferallocations > 1 ); //see #190
    //if( bufferallocations <= 1 ) {
    //	createBuffers( sslEngine.getSession() );
    //}
    int num = socketChannel.write(wrap(src));
    if (writeEngineResult.getStatus() == SSLEngineResult.Status.CLOSED) {
        throw new EOFException("Connection is closed");
    }
    return num;

}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
   * {@link #read(ByteBuffer)} may not be to leave all buffers(inData,
   * inCrypt)
*
   */
  private int readRemaining(ByteBuffer dst) throws SSLException {
      if (inData.hasRemaining()) {
          return transfereTo(inData, dst);
      }
      if (!inData.hasRemaining()) {
          inData.clear();
      }
      // test if some bytes left from last read (e.g. BUFFER_UNDERFLOW)
      if (inCrypt.hasRemaining()) {
          unwrap();
          int amount = transfereTo(inData, dst);
          if (readEngineResult.getStatus() == SSLEngineResult.Status.CLOSED) {
              return -1;
          }
          if (amount > 0) {
              return amount;
          }
      }
      return 0;
  }
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
* Performs the WRAP function
* @param doWrite boolean
* @return SSLEngineResult
* @throws IOException
*/
private SSLEngineResult handshakeWrap(boolean doWrite) throws IOException {
    log.trace("SSLHandshake handshakeWrap {}", channelId);
    if (netWriteBuffer.hasRemaining())
        throw new IllegalStateException("handshakeWrap called with netWriteBuffer not empty");
    //this should never be called with a network buffer that contains data
    //so we can clear it here.
    netWriteBuffer.clear();
    SSLEngineResult result = sslEngine.wrap(emptyBuf, netWriteBuffer);
    //prepare the results to be written
    netWriteBuffer.flip();
    handshakeStatus = result.getHandshakeStatus();
    if (result.getStatus() == SSLEngineResult.Status.OK &&
        result.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {
        handshakeStatus = runDelegatedTasks();
    }

    if (doWrite) flush(netWriteBuffer);
    return result;
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
* Perform handshake unwrap
* @param doRead boolean
* @return SSLEngineResult
* @throws IOException
*/
private SSLEngineResult handshakeUnwrap(boolean doRead) throws IOException {
    log.trace("SSLHandshake handshakeUnwrap {}", channelId);
    SSLEngineResult result;
    if (doRead)  {
        int read = socketChannel.read(netReadBuffer);
        if (read == -1) throw new EOFException("EOF during handshake.");
    }
    boolean cont;
    do {
        //prepare the buffer with the incoming data
        netReadBuffer.flip();
        result = sslEngine.unwrap(netReadBuffer, appReadBuffer);
        netReadBuffer.compact();
        handshakeStatus = result.getHandshakeStatus();
        if (result.getStatus() == SSLEngineResult.Status.OK &&
            result.getHandshakeStatus() == HandshakeStatus.NEED_TASK) {
            handshakeStatus = runDelegatedTasks();
        }
        cont = result.getStatus() == SSLEngineResult.Status.OK &&
            handshakeStatus == HandshakeStatus.NEED_UNWRAP;
        log.trace("SSLHandshake handshakeUnwrap: handshakeStatus {} status {}", handshakeStatus, result.getStatus());
    } while (netReadBuffer.position() != 0 && cont);

    return result;
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
 * send the data in the given ByteBuffer. If a handshake is needed
 * then this is handled within this method. When this call returns,
 * all of the given user data has been sent and any handshake has been
 * completed. Caller should check if engine has been closed.
 */
WrapperResult sendData (ByteBuffer[] src, int offset, int len) throws IOException {
    WrapperResult r = WrapperResult.createOK();
    while (countBytes(src, offset, len) > 0) {
        r = wrapper.wrapAndSend(src, offset, len, false);
        Status status = r.result.getStatus();
        if (status == Status.CLOSED) {
            doClosure ();
            return r;
        }
        HandshakeStatus hs_status = r.result.getHandshakeStatus();
        if (hs_status != HandshakeStatus.FINISHED &&
            hs_status != HandshakeStatus.NOT_HANDSHAKING)
        {
            doHandshake(hs_status);
        }
    }
    return r;
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
 * read data thru the engine into the given ByteBuffer. If the
 * given buffer was not large enough, a new one is allocated
 * and returned. This call handles handshaking automatically.
 * Caller should check if engine has been closed.
 */
WrapperResult recvData (ByteBuffer dst) throws IOException {
    /* we wait until some user data arrives */
    int mark = dst.position();
    WrapperResult r = null;
    int pos = dst.position();
    while (dst.position() == pos) {
        r = wrapper.recvAndUnwrap (dst);
        dst = (r.buf != dst) ? r.buf: dst;
        Status status = r.result.getStatus();
        if (status == Status.CLOSED) {
            doClosure ();
            return r;
        }

        HandshakeStatus hs_status = r.result.getHandshakeStatus();
        if (hs_status != HandshakeStatus.FINISHED &&
            hs_status != HandshakeStatus.NOT_HANDSHAKING)
        {
            doHandshake (hs_status);
        }
    }
    Utils.flipToMark(dst, mark);
    return r;
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
public SSLSocketChannel2( SocketChannel channel , SSLEngine sslEngine , ExecutorService exec , SelectionKey key ) throws IOException {
	if( channel == null || sslEngine == null || exec == null )
		throw new IllegalArgumentException( "parameter must not be null" );

	this.socketChannel = channel;
	this.sslEngine = sslEngine;
	this.exec = exec;

	readEngineResult = writeEngineResult = new SSLEngineResult( Status.BUFFER_UNDERFLOW, sslEngine.getHandshakeStatus(), 0, 0 ); // init to prevent NPEs

	tasks = new ArrayList<Future<?>>( 3 );
	if( key != null ) {
		key.interestOps( key.interestOps() | SelectionKey.OP_WRITE );
		this.selectionKey = key;
	}
	createBuffers( sslEngine.getSession() );
	// kick off request
	socketChannel.write( wrap( emptybuffer ) );// initializes res
	processHandshake();
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
/**
 * performs the unwrap operation by unwrapping from {@link #inCrypt} to {@link #inData}
 **/
private synchronized ByteBuffer unwrap() throws SSLException {
	int rem;
	//There are some ssl test suites, which get around the selector.select() call, which cause an infinite unwrap and 100% cpu usage (see #459 and #458)
	if(readEngineResult.getStatus() == Status.CLOSED && sslEngine.getHandshakeStatus() == HandshakeStatus.NOT_HANDSHAKING){
		try {
			close();
		} catch (IOException e) {
			//Not really interesting
		}
	}
	do {
		rem = inData.remaining();
		readEngineResult = sslEngine.unwrap( inCrypt, inData );
	} while ( readEngineResult.getStatus() == Status.OK && ( rem != inData.remaining() || sslEngine.getHandshakeStatus() == HandshakeStatus.NEED_UNWRAP ) );
	inData.flip();
	return inData;
}
 

import javax.net.ssl.SSLEngineResult.Status; //導入依賴的package包/類
public int write( ByteBuffer src ) throws IOException {
	if( !isHandShakeComplete() ) {
		processHandshake();
		return 0;
	}
	// assert ( bufferallocations > 1 ); //see #190
	//if( bufferallocations <= 1 ) {
	//	createBuffers( sslEngine.getSession() );
	//}
	int num = socketChannel.write( wrap( src ) );
       if (writeEngineResult.getStatus() == Status.CLOSED) {
           throw new EOFException("Connection is closed");
       }
	return num;

}