| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * Based on http://antony.lesuisse.org/software/ajaxterm/ |
| * Public Domain License |
| */ |
| package org.apache.karaf.webconsole.gogo; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.InterruptedIOException; |
| import java.io.PipedInputStream; |
| import java.io.PipedOutputStream; |
| import java.io.PrintStream; |
| import java.io.PrintWriter; |
| import java.net.URL; |
| import java.security.AccessControlContext; |
| import java.security.AccessController; |
| import java.util.zip.GZIPOutputStream; |
| |
| import javax.security.auth.Subject; |
| import javax.servlet.ServletException; |
| import javax.servlet.http.HttpServletRequest; |
| import javax.servlet.http.HttpServletResponse; |
| |
| import org.apache.felix.webconsole.AbstractWebConsolePlugin; |
| import org.apache.karaf.jaas.boot.principal.UserPrincipal; |
| import org.apache.karaf.shell.api.console.Session; |
| import org.apache.karaf.shell.api.console.SessionFactory; |
| import org.osgi.framework.BundleContext; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * WebConsole plugin for {@link Session}. |
| */ |
| public class GogoPlugin extends AbstractWebConsolePlugin { |
| |
| private final Logger logger = LoggerFactory.getLogger(GogoPlugin.class); |
| |
| public static final String NAME = "gogo"; |
| public static final String LABEL = "Gogo"; |
| public static final int TERM_WIDTH = 120; |
| public static final int TERM_HEIGHT = 39; |
| |
| private BundleContext bundleContext; |
| private SessionFactory sessionFactory; |
| |
| @Override |
| protected boolean isHtmlRequest(HttpServletRequest request) { |
| return true; |
| } |
| |
| public void setBundleContext(BundleContext bundleContext) { |
| this.bundleContext = bundleContext; |
| } |
| |
| public void setSessionFactory(SessionFactory sessionFactory) { |
| this.sessionFactory = sessionFactory; |
| } |
| |
| public void start() { |
| super.activate(bundleContext); |
| this.logger.info(LABEL + " plugin activated"); |
| } |
| |
| public void stop() { |
| this.logger.info(LABEL + " plugin deactivated"); |
| super.deactivate(); |
| } |
| |
| @Override |
| public String getLabel() { |
| return NAME; |
| } |
| |
| @Override |
| public String getTitle() { |
| return LABEL; |
| } |
| |
| @Override |
| protected void renderContent(HttpServletRequest request, HttpServletResponse response) throws IOException { |
| PrintWriter pw = response.getWriter(); |
| |
| String appRoot = request.getContextPath() + request.getServletPath(); |
| pw.println("<link href=\"" + appRoot + "/gogo/res/ui/gogo.css\" rel=\"stylesheet\" type=\"text/css\" />"); |
| pw.println("<script src=\"" + appRoot + "/gogo/res/ui/gogo.js\" type=\"text/javascript\"></script>"); |
| pw.println("<div id='console'><div id='term'></div></div>"); |
| pw.println("<script type=\"text/javascript\"><!--"); |
| pw.println("window.onload = function() { gogo.Terminal(document.getElementById(\"term\"), " + TERM_WIDTH + ", " + TERM_HEIGHT + "); }"); |
| pw.println("--></script>"); |
| } |
| |
| protected URL getResource(String path) { |
| path = path.substring(NAME.length() + 1); |
| if (path == null || path.isEmpty()) { |
| return null; |
| } |
| URL url = this.getClass().getClassLoader().getResource(path); |
| if (url != null) { |
| InputStream ins = null; |
| try { |
| ins = url.openStream(); |
| if (ins == null) { |
| this.logger.error("failed to open " + url); |
| url = null; |
| } |
| } catch (IOException e) { |
| this.logger.error(e.getMessage(), e); |
| url = null; |
| } finally { |
| if (ins != null) { |
| try { |
| ins.close(); |
| } catch (IOException e) { |
| this.logger.error(e.getMessage(), e); |
| } |
| } |
| } |
| } |
| return url; |
| } |
| |
| @Override |
| protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { |
| String encoding = request.getHeader("Accept-Encoding"); |
| boolean supportsGzip = (encoding != null && encoding.toLowerCase().indexOf("gzip") > -1); |
| SessionTerminal st = (SessionTerminal) request.getSession(true).getAttribute("terminal"); |
| if (st == null || st.isClosed()) { |
| st = new SessionTerminal(); |
| request.getSession().setAttribute("terminal", st); |
| } |
| String str = request.getParameter("k"); |
| String f = request.getParameter("f"); |
| String dump = st.handle(str, f != null && f.length() > 0); |
| if (dump != null) { |
| if (supportsGzip) { |
| response.setHeader("Content-Encoding", "gzip"); |
| response.setHeader("Content-Type", "text/html"); |
| try { |
| GZIPOutputStream gzos = new GZIPOutputStream(response.getOutputStream()); |
| gzos.write(dump.getBytes()); |
| gzos.close(); |
| } catch (IOException ie) { |
| // handle the error here |
| ie.printStackTrace(); |
| } |
| } else { |
| response.getOutputStream().write(dump.getBytes()); |
| } |
| } |
| } |
| |
| public class SessionTerminal implements Runnable { |
| |
| private Terminal terminal; |
| private PipedOutputStream in; |
| private PipedInputStream out; |
| private boolean closed; |
| |
| public SessionTerminal() throws IOException { |
| try { |
| this.terminal = new Terminal(TERM_WIDTH, TERM_HEIGHT); |
| terminal.write("\u001b\u005B20\u0068"); // set newline mode on |
| |
| in = new PipedOutputStream(); |
| out = new PipedInputStream(); |
| PrintStream pipedOut = new PrintStream(new PipedOutputStream(out), true); |
| |
| Session session = sessionFactory.create( |
| new PipedInputStream(in), |
| pipedOut, |
| pipedOut, |
| new WebTerminal(TERM_WIDTH, TERM_HEIGHT), |
| null, |
| null); |
| new Thread(session, "Karaf web console user " + getCurrentUserName()).start(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| throw e; |
| } catch (Exception e) { |
| e.printStackTrace(); |
| throw (IOException) new IOException().initCause(e); |
| } |
| new Thread(this).start(); |
| } |
| |
| private String getCurrentUserName() { |
| AccessControlContext acc = AccessController.getContext(); |
| final Subject subject = Subject.getSubject(acc); |
| if (subject != null && subject.getPrincipals().iterator().hasNext()) { |
| return subject.getPrincipals(UserPrincipal.class).iterator().next().getName(); |
| } else { |
| return null; |
| } |
| } |
| |
| public boolean isClosed() { |
| return closed; |
| } |
| |
| public String handle(String str, boolean forceDump) throws IOException { |
| try { |
| if (str != null && str.length() > 0) { |
| String d = terminal.pipe(str); |
| for (byte b : d.getBytes()) { |
| in.write(b); |
| } |
| in.flush(); |
| } |
| } catch (IOException e) { |
| closed = true; |
| throw e; |
| } |
| try { |
| return terminal.dump(10, forceDump); |
| } catch (InterruptedException e) { |
| throw new InterruptedIOException(e.toString()); |
| } |
| } |
| |
| public void run() { |
| try { |
| for (; ; ) { |
| byte[] buf = new byte[8192]; |
| int l = out.read(buf); |
| InputStreamReader r = new InputStreamReader(new ByteArrayInputStream(buf, 0, l)); |
| StringBuilder sb = new StringBuilder(); |
| for (; ; ) { |
| int c = r.read(); |
| if (c == -1) { |
| break; |
| } |
| sb.append((char) c); |
| } |
| if (sb.length() > 0) { |
| terminal.write(sb.toString()); |
| } |
| String s = terminal.read(); |
| if (s != null && s.length() > 0) { |
| for (byte b : s.getBytes()) { |
| in.write(b); |
| } |
| } |
| } |
| } catch (IOException e) { |
| closed = true; |
| e.printStackTrace(); |
| } |
| } |
| |
| } |
| |
| } |