mirror of
https://github.com/apache/cloudstack.git
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413 lines
16 KiB
Java
413 lines
16 KiB
Java
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package com.cloud.consoleproxy;
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import static com.cloud.utils.AutoCloseableUtil.closeAutoCloseable;
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import java.io.BufferedReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.io.OutputStream;
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import java.net.URLDecoder;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import com.sun.net.httpserver.Headers;
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import com.sun.net.httpserver.HttpExchange;
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import com.sun.net.httpserver.HttpHandler;
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import com.cloud.consoleproxy.util.Logger;
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public class ConsoleProxyAjaxHandler implements HttpHandler {
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private static final Logger s_logger = Logger.getLogger(ConsoleProxyAjaxHandler.class);
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public ConsoleProxyAjaxHandler() {
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}
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@Override
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public void handle(HttpExchange t) throws IOException {
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try {
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if (s_logger.isTraceEnabled())
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s_logger.trace("AjaxHandler " + t.getRequestURI());
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long startTick = System.currentTimeMillis();
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doHandle(t);
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if (s_logger.isTraceEnabled())
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s_logger.trace(t.getRequestURI() + " process time " + (System.currentTimeMillis() - startTick) + " ms");
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} catch (IOException e) {
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throw e;
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} catch (IllegalArgumentException e) {
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s_logger.warn("Exception, ", e);
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t.sendResponseHeaders(400, -1); // bad request
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} catch (Throwable e) {
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s_logger.error("Unexpected exception, ", e);
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t.sendResponseHeaders(500, -1); // server error
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} finally {
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t.close();
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}
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}
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private void doHandle(HttpExchange t) throws Exception, IllegalArgumentException {
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String queries = t.getRequestURI().getQuery();
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if (s_logger.isTraceEnabled())
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s_logger.trace("Handle AJAX request: " + queries);
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Map<String, String> queryMap = ConsoleProxyHttpHandlerHelper.getQueryMap(queries);
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String host = queryMap.get("host");
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String portStr = queryMap.get("port");
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String sid = queryMap.get("sid");
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String tag = queryMap.get("tag");
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String ticket = queryMap.get("ticket");
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String ajaxSessionIdStr = queryMap.get("sess");
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String eventStr = queryMap.get("event");
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String console_url = queryMap.get("consoleurl");
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String console_host_session = queryMap.get("sessionref");
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String vm_locale = queryMap.get("locale");
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String hypervHost = queryMap.get("hypervHost");
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String username = queryMap.get("username");
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String password = queryMap.get("password");
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if (tag == null)
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tag = "";
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long ajaxSessionId = 0;
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int event = 0;
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int port;
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if (host == null || portStr == null || sid == null)
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throw new IllegalArgumentException();
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try {
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port = Integer.parseInt(portStr);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + portStr);
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throw new IllegalArgumentException(e);
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}
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if (ajaxSessionIdStr != null) {
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try {
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ajaxSessionId = Long.parseLong(ajaxSessionIdStr);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + ajaxSessionIdStr);
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throw new IllegalArgumentException(e);
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}
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}
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if (eventStr != null) {
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try {
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event = Integer.parseInt(eventStr);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + eventStr);
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throw new IllegalArgumentException(e);
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}
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}
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ConsoleProxyClient viewer = null;
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try {
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ConsoleProxyClientParam param = new ConsoleProxyClientParam();
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param.setClientHostAddress(host);
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param.setClientHostPort(port);
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param.setClientHostPassword(sid);
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param.setClientTag(tag);
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param.setTicket(ticket);
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param.setClientTunnelUrl(console_url);
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param.setClientTunnelSession(console_host_session);
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param.setLocale(vm_locale);
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param.setHypervHost(hypervHost);
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param.setUsername(username);
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param.setPassword(password);
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viewer = ConsoleProxy.getAjaxVncViewer(param, ajaxSessionIdStr);
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} catch (Exception e) {
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s_logger.warn("Failed to create viewer due to " + e.getMessage(), e);
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String[] content =
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new String[] {"<html><head></head><body>", "<div id=\"main_panel\" tabindex=\"1\">",
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"<p>Access is denied for the console session. Please close the window and retry again</p>", "</div></body></html>"};
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StringBuffer sb = new StringBuffer();
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for (int i = 0; i < content.length; i++)
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sb.append(content[i]);
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sendResponse(t, "text/html", sb.toString());
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return;
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}
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if (event != 0) {
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if (ajaxSessionId != 0 && ajaxSessionId == viewer.getAjaxSessionId()) {
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if (event == 7) {
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// client send over an event bag
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InputStream is = t.getRequestBody();
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handleClientEventBag(viewer, convertStreamToString(is, true));
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} else {
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handleClientEvent(viewer, event, queryMap);
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}
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sendResponse(t, "text/html", "OK");
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} else {
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if (s_logger.isDebugEnabled())
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s_logger.debug("Ajax request comes from a different session, id in request: " + ajaxSessionId + ", id in viewer: " + viewer.getAjaxSessionId());
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sendResponse(t, "text/html", "Invalid ajax client session id");
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}
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} else {
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if (ajaxSessionId != 0 && ajaxSessionId != viewer.getAjaxSessionId()) {
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s_logger.info("Ajax request comes from a different session, id in request: " + ajaxSessionId + ", id in viewer: " + viewer.getAjaxSessionId());
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handleClientKickoff(t, viewer);
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} else if (ajaxSessionId == 0) {
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if (s_logger.isDebugEnabled())
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s_logger.debug("Ajax request indicates a fresh client start");
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String title = queryMap.get("t");
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String guest = queryMap.get("guest");
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handleClientStart(t, viewer, title != null ? title : "", guest);
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} else {
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if (s_logger.isTraceEnabled())
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s_logger.trace("Ajax request indicates client update");
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handleClientUpdate(t, viewer);
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}
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}
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}
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private static String convertStreamToString(InputStream is, boolean closeStreamAfterRead) {
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BufferedReader reader = new BufferedReader(new InputStreamReader(is));
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StringBuilder sb = new StringBuilder();
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String line = null;
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try {
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while ((line = reader.readLine()) != null) {
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sb.append(line + "\n");
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}
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} catch (IOException e) {
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s_logger.warn("Exception while reading request body: ", e);
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} finally {
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if (closeStreamAfterRead) {
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closeAutoCloseable(is, "error closing stream after read");
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}
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}
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return sb.toString();
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}
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private void sendResponse(HttpExchange t, String contentType, String response) throws IOException {
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Headers hds = t.getResponseHeaders();
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hds.set("Content-Type", contentType);
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t.sendResponseHeaders(200, response.length());
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OutputStream os = t.getResponseBody();
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try {
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os.write(response.getBytes());
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} finally {
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os.close();
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}
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}
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@SuppressWarnings("deprecation")
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private void handleClientEventBag(ConsoleProxyClient viewer, String requestData) {
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if (s_logger.isTraceEnabled())
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s_logger.trace("Handle event bag, event bag: " + requestData);
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int start = requestData.indexOf("=");
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if (start < 0)
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start = 0;
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else if (start > 0)
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start++;
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String data = URLDecoder.decode(requestData.substring(start));
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String[] tokens = data.split("\\|");
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if (tokens != null && tokens.length > 0) {
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int count = 0;
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try {
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count = Integer.parseInt(tokens[0]);
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int parsePos = 1;
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int type, event, x, y, code, modifiers;
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for (int i = 0; i < count; i++) {
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type = Integer.parseInt(tokens[parsePos++]);
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if (type == 1) {
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// mouse event
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event = Integer.parseInt(tokens[parsePos++]);
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x = Integer.parseInt(tokens[parsePos++]);
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y = Integer.parseInt(tokens[parsePos++]);
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code = Integer.parseInt(tokens[parsePos++]);
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modifiers = Integer.parseInt(tokens[parsePos++]);
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Map<String, String> queryMap = new HashMap<String, String>();
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queryMap.put("event", String.valueOf(event));
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queryMap.put("x", String.valueOf(x));
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queryMap.put("y", String.valueOf(y));
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queryMap.put("code", String.valueOf(code));
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queryMap.put("modifier", String.valueOf(modifiers));
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handleClientEvent(viewer, event, queryMap);
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} else {
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// keyboard event
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event = Integer.parseInt(tokens[parsePos++]);
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code = Integer.parseInt(tokens[parsePos++]);
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modifiers = Integer.parseInt(tokens[parsePos++]);
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Map<String, String> queryMap = new HashMap<String, String>();
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queryMap.put("event", String.valueOf(event));
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queryMap.put("code", String.valueOf(code));
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queryMap.put("modifier", String.valueOf(modifiers));
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handleClientEvent(viewer, event, queryMap);
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}
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}
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} catch (NumberFormatException e) {
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s_logger.warn("Exception in handle client event bag: " + data + ", ", e);
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} catch (Exception e) {
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s_logger.warn("Exception in handle client event bag: " + data + ", ", e);
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} catch (OutOfMemoryError e) {
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s_logger.error("Unrecoverable OutOfMemory Error, exit and let it be re-launched");
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System.exit(1);
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}
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}
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}
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private void handleClientEvent(ConsoleProxyClient viewer, int event, Map<String, String> queryMap) {
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int code = 0;
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int x = 0, y = 0;
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int modifiers = 0;
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String str;
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switch (event) {
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case 1: // mouse move
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case 2: // mouse down
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case 3: // mouse up
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case 8: // mouse double click
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str = queryMap.get("x");
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if (str != null) {
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try {
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x = Integer.parseInt(str);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + str);
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throw new IllegalArgumentException(e);
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}
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}
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str = queryMap.get("y");
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if (str != null) {
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try {
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y = Integer.parseInt(str);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + str);
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throw new IllegalArgumentException(e);
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}
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}
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if (event != 1) {
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str = queryMap.get("code");
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try {
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code = Integer.parseInt(str);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + str);
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throw new IllegalArgumentException(e);
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}
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str = queryMap.get("modifier");
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try {
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modifiers = Integer.parseInt(str);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + str);
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throw new IllegalArgumentException(e);
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}
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if (s_logger.isTraceEnabled())
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s_logger.trace("Handle client mouse event. event: " + event + ", x: " + x + ", y: " + y + ", button: " + code + ", modifier: " + modifiers);
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} else {
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if (s_logger.isTraceEnabled())
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s_logger.trace("Handle client mouse move event. x: " + x + ", y: " + y);
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}
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viewer.sendClientMouseEvent(InputEventType.fromEventCode(event), x, y, code, modifiers);
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break;
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case 4: // key press
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case 5: // key down
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case 6: // key up
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str = queryMap.get("code");
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try {
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code = Integer.parseInt(str);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + str);
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throw new IllegalArgumentException(e);
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}
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str = queryMap.get("modifier");
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try {
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modifiers = Integer.parseInt(str);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid number parameter in query string: " + str);
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throw new IllegalArgumentException(e);
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}
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if (s_logger.isDebugEnabled())
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s_logger.debug("Handle client keyboard event. event: " + event + ", code: " + code + ", modifier: " + modifiers);
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viewer.sendClientRawKeyboardEvent(InputEventType.fromEventCode(event), code, modifiers);
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break;
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default:
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break;
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}
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}
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private void handleClientKickoff(HttpExchange t, ConsoleProxyClient viewer) throws IOException {
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String response = viewer.onAjaxClientKickoff();
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t.sendResponseHeaders(200, response.length());
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OutputStream os = t.getResponseBody();
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try {
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os.write(response.getBytes());
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} finally {
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os.close();
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}
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}
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private void handleClientStart(HttpExchange t, ConsoleProxyClient viewer, String title, String guest) throws IOException {
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List<String> languages = t.getRequestHeaders().get("Accept-Language");
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String response = viewer.onAjaxClientStart(title, languages, guest);
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Headers hds = t.getResponseHeaders();
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hds.set("Content-Type", "text/html");
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hds.set("Cache-Control", "no-cache");
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hds.set("Cache-Control", "no-store");
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t.sendResponseHeaders(200, response.length());
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OutputStream os = t.getResponseBody();
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try {
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os.write(response.getBytes());
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} finally {
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os.close();
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}
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}
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private void handleClientUpdate(HttpExchange t, ConsoleProxyClient viewer) throws IOException {
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String response = viewer.onAjaxClientUpdate();
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Headers hds = t.getResponseHeaders();
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hds.set("Content-Type", "text/javascript");
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t.sendResponseHeaders(200, response.length());
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OutputStream os = t.getResponseBody();
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try {
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os.write(response.getBytes());
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} finally {
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os.close();
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}
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}
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}
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