mirror of https://github.com/apache/cloudstack.git
125 lines
4.0 KiB
Java
125 lines
4.0 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.IOException;
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import java.io.OutputStream;
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import java.util.HashMap;
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import java.util.Map;
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import com.cloud.consoleproxy.util.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 ConsoleProxyAjaxImageHandler implements HttpHandler {
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private static final Logger s_logger = Logger.getLogger(ConsoleProxyAjaxImageHandler.class);
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public void handle(HttpExchange t) throws IOException {
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try {
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if(s_logger.isDebugEnabled())
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s_logger.debug("AjaxImageHandler " + t.getRequestURI());
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long startTick = System.currentTimeMillis();
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doHandle(t);
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if(s_logger.isDebugEnabled())
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s_logger.debug(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(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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} 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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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 keyStr = queryMap.get("key");
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int key = 0;
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if(tag == null)
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tag = "";
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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 numeric parameter in query string: " + portStr);
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throw new IllegalArgumentException(e);
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}
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try {
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key = Integer.parseInt(keyStr);
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} catch (NumberFormatException e) {
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s_logger.warn("Invalid numeric parameter in query string: " + keyStr);
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throw new IllegalArgumentException(e);
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}
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ConsoleProxyClient viewer = ConsoleProxy.getVncViewer(host, port, sid, tag, ticket);
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byte[] img = viewer.getAjaxImageCache().getImage(key);
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if(img != null) {
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Headers hds = t.getResponseHeaders();
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hds.set("Content-Type", "image/jpeg");
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t.sendResponseHeaders(200, img.length);
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OutputStream os = t.getResponseBody();
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try {
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os.write(img, 0, img.length);
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} finally {
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os.close();
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}
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} else {
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if(s_logger.isInfoEnabled())
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s_logger.info("Image has already been swept out, key: " + key);
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t.sendResponseHeaders(404, -1);
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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 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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}
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return map;
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}
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}
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