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117 lines
3.9 KiB
Java
117 lines
3.9 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 java.io.IOException;
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import java.io.OutputStream;
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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 = 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 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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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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ConsoleProxyClient viewer = ConsoleProxy.getVncViewer(param);
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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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}
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