mirror of https://github.com/apache/cloudstack.git
425 lines
14 KiB
Java
425 lines
14 KiB
Java
/**
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* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
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*
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* This software is licensed under the GNU General Public License v3 or later.
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*
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* It is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package com.cloud.consoleproxy;
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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.cloud.console.Logger;
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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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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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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 = 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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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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ConsoleProxyViewer viewer = null;
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try {
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viewer = ConsoleProxy.getAjaxVncViewer(host, port, sid, tag, ticket, ajaxSessionIdStr);
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} catch(Exception e) {
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/*
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StringWriter writer = new StringWriter();
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try {
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ConsoleProxy.processTemplate("viewer-bad-sid.ftl", null, writer);
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} catch (IOException ex) {
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s_logger.warn("Unexpected exception in processing template.", e);
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} catch (TemplateException ex) {
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s_logger.warn("Unexpected exception in processing template.", e);
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}
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StringBuffer sb = writer.getBuffer();
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*/
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s_logger.warn("Failed to create viwer due to " + e.getMessage(), e);
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String[] content = new String[] {
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"<html><head></head><body>",
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"<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>",
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"</div></body></html>"
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};
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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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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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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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handleClientStart(t, viewer, title != null ? title : "");
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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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public static Map<String, String> getQueryMap(String query) {
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String[] params = query.split("&");
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Map<String, String> map = new HashMap<String, String>();
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for (String param : params) {
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String[] paramTokens = param.split("=");
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if(paramTokens != null && paramTokens.length == 2) {
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String name = param.split("=")[0];
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String value = param.split("=")[1];
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map.put(name, value);
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} else {
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if(s_logger.isDebugEnabled())
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s_logger.debug("Invalid paramemter in URL found. param: " + param);
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}
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}
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return map;
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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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try {
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is.close();
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} catch (IOException e) {
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}
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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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private void handleClientEventBag(ConsoleProxyViewer 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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}
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}
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}
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private void handleClientEvent(ConsoleProxyViewer 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(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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if(ConsoleProxy.keyboardType == ConsoleProxy.KEYBOARD_RAW)
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viewer.sendClientRawKeyboardEvent(event, code, modifiers);
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else
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viewer.sendClientKeyboardEvent(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, ConsoleProxyViewer 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, ConsoleProxyViewer viewer, String title) throws IOException {
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List<String> languages = t.getRequestHeaders().get("Accept-Language");
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String response = viewer.onAjaxClientStart(title, languages);
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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, ConsoleProxyViewer 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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