com.yeetor.server.handler.WSHandler.java Source code

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Here is the source code for com.yeetor.server.handler.WSHandler.java

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/*
 *
 * MIT License
 *
 * Copyright (c) 2017  https://blog.yeetor.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

package com.yeetor.server.handler;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.yeetor.adb.AdbDevice;
import com.yeetor.adb.AdbServer;
import com.yeetor.androidcontrol.client.LocalClient;
import com.yeetor.minicap.Banner;
import com.yeetor.minicap.Minicap;
import com.yeetor.minicap.MinicapListener;
import com.yeetor.minicap.ScreencapBase;
import com.yeetor.minitouch.MinitouchListener;
import com.yeetor.protocol.TextProtocol;
import com.yeetor.server.AndroidControlServer;
import com.yeetor.server.ScreencapService;
import com.yeetor.server.ServicesPool;
import com.yeetor.server.WSServer;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelDuplexHandler;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import io.netty.handler.codec.http.websocketx.*;
import io.netty.util.CharsetUtil;
import io.netty.util.ReferenceCountUtil;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.log4j.Logger;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class WSHandler extends SimpleChannelInboundHandler<Object> {
    private static Logger logger = Logger.getLogger(WSHandler.class);
    private static boolean autorelease = false;

    /**
     * Websocket 
     */
    WebSocketServerHandshaker handshaker = null;
    /**
     * Handler
     */
    IWebsocketEvent eventListener;

    /**
     * ?????
     */
    byte binaryCache[] = new byte[0];

    public WSHandler(IWebsocketEvent eventListener) {
        super(autorelease);
        this.eventListener = eventListener;
    }

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
        if (msg instanceof FullHttpRequest) {
            FullHttpRequest req = (FullHttpRequest) msg;

            if (!req.getDecoderResult().isSuccess() || (!"websocket".equals(req.headers().get("Upgrade")))) {
                ctx.fireChannelRead(req);
                return;
            }
            handleWSConnect(ctx, req);
        } else if (msg instanceof WebSocketFrame) {
            WebSocketFrame frame = (WebSocketFrame) msg;
            handlerWebSocketFrame(ctx, frame);
        }
        if (!autorelease)
            ReferenceCountUtil.release(msg);
    }

    private void handlerWebSocketFrame(ChannelHandlerContext ctx, WebSocketFrame frame) {
        // ?
        if (frame instanceof CloseWebSocketFrame && handshaker != null) {
            handshaker.close(ctx.channel(), (CloseWebSocketFrame) frame.retain());
            if (eventListener != null) {
                eventListener.onDisconnect(ctx);
            }
            return;
        }
        // ?ping?
        if (frame instanceof PingWebSocketFrame) {
            ctx.channel().write(new PongWebSocketFrame(frame.content().retain()));
            return;
        }

        if (frame instanceof TextWebSocketFrame) {
            if (eventListener != null) {
                eventListener.onTextMessage(ctx, ((TextWebSocketFrame) frame).text());
            }
        } else if (frame instanceof BinaryWebSocketFrame || frame instanceof ContinuationWebSocketFrame) {
            ByteBuf byteBuf = frame.content();
            byte[] bytes = new byte[byteBuf.readableBytes()];
            byteBuf.getBytes(0, bytes);
            binaryCache = ArrayUtils.addAll(binaryCache, bytes);
            if (frame.isFinalFragment()) {
                byte[] b = binaryCache;
                binaryCache = new byte[0];
                if (eventListener != null) {
                    eventListener.onBinaryMessage(ctx, b);
                }
            }
        }
    }

    private void handleWSConnect(ChannelHandlerContext ctx, FullHttpRequest msg) {
        WebSocketServerHandshakerFactory wsFactory = new WebSocketServerHandshakerFactory(null, null, true,
                Integer.MAX_VALUE, true);
        handshaker = wsFactory.newHandshaker(msg);
        if (handshaker == null) {
            WebSocketServerHandshakerFactory.sendUnsupportedWebSocketVersionResponse(ctx.channel());
        } else {
            handshaker.handshake(ctx.channel(), msg);
        }
    }
}