001 /*
002 * Copyright (C) 2012 eXo Platform SAS.
003 *
004 * This is free software; you can redistribute it and/or modify it
005 * under the terms of the GNU Lesser General Public License as
006 * published by the Free Software Foundation; either version 2.1 of
007 * the License, or (at your option) any later version.
008 *
009 * This software is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * You should have received a copy of the GNU Lesser General Public
015 * License along with this software; if not, write to the Free
016 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018 */
019
020 package org.crsh.standalone;
021
022 import com.sun.tools.attach.VirtualMachine;
023 import org.crsh.cli.impl.descriptor.CommandDescriptorImpl;
024 import jline.Terminal;
025 import jline.TerminalFactory;
026 import jline.console.ConsoleReader;
027 import org.crsh.cli.impl.Delimiter;
028 import org.crsh.cli.impl.descriptor.IntrospectionException;
029 import org.crsh.cli.Argument;
030 import org.crsh.cli.Command;
031 import org.crsh.cli.Option;
032 import org.crsh.cli.Usage;
033 import org.crsh.cli.impl.lang.CommandFactory;
034 import org.crsh.cli.impl.invocation.InvocationMatch;
035 import org.crsh.cli.impl.invocation.InvocationMatcher;
036 import org.crsh.processor.jline.JLineProcessor;
037 import org.crsh.shell.Shell;
038 import org.crsh.shell.ShellFactory;
039 import org.crsh.shell.impl.remoting.RemoteServer;
040 import org.crsh.util.CloseableList;
041 import org.crsh.util.IO;
042 import org.crsh.util.InterruptHandler;
043 import org.crsh.util.Safe;
044 import org.crsh.vfs.FS;
045 import org.crsh.vfs.Path;
046 import org.crsh.vfs.Resource;
047 import org.fusesource.jansi.AnsiConsole;
048
049 import java.io.ByteArrayInputStream;
050 import java.io.Closeable;
051 import java.io.File;
052 import java.io.FileDescriptor;
053 import java.io.FileInputStream;
054 import java.io.FileOutputStream;
055 import java.io.IOException;
056 import java.io.PrintWriter;
057 import java.util.List;
058 import java.util.Properties;
059 import java.util.jar.Attributes;
060 import java.util.jar.JarOutputStream;
061 import java.util.jar.Manifest;
062 import java.util.logging.Level;
063 import java.util.logging.Logger;
064 import java.util.regex.Pattern;
065
066 public class CRaSH {
067
068 /** . */
069 private static Logger log = Logger.getLogger(CRaSH.class.getName());
070
071 /** . */
072 private final CommandDescriptorImpl<CRaSH> descriptor;
073
074 public CRaSH() throws IntrospectionException {
075 this.descriptor = CommandFactory.DEFAULT.create(CRaSH.class);
076 }
077
078 private void copy(org.crsh.vfs.File src, File dst) throws IOException {
079 if (src.isDir()) {
080 if (!dst.exists()) {
081 if (dst.mkdir()) {
082 log.fine("Could not create dir " + dst.getCanonicalPath());
083 }
084 }
085 if (dst.exists() && dst.isDirectory()) {
086 for (org.crsh.vfs.File child : src.children()) {
087 copy(child, new File(dst, child.getName()));
088 }
089 }
090 } else {
091 if (!dst.exists()) {
092 Resource resource = src.getResource();
093 if (resource != null) {
094 log.info("Copied resource " + src.getPath().getValue() + " to " + dst.getCanonicalPath());
095 IO.copy(new ByteArrayInputStream(resource.getContent()), new FileOutputStream(dst));
096 }
097 }
098 }
099 }
100
101 @Command
102 public void main(
103 @Option(names= {"non-interactive"})
104 @Usage("non interactive mode, the JVM io will not be used")
105 Boolean nonInteractive,
106 @Option(names={"c","cmd"})
107 @Usage("adds a dir to the command path")
108 List<String> cmds,
109 @Option(names={"conf"})
110 @Usage("adds a dir to the conf path")
111 List<String> confs,
112 @Option(names={"p","property"})
113 @Usage("set a property of the form a=b")
114 List<String> properties,
115 @Option(names = {"cmd-mode"})
116 @Usage("the cmd mode (read or copy), copy mode requires at least one cmd path to be specified")
117 ResourceMode cmdMode,
118 @Option(names = {"conf-mode"})
119 @Usage("the conf mode (read of copy), copy mode requires at least one conf path to be specified")
120 ResourceMode confMode,
121 @Argument(name = "pid")
122 @Usage("the optional JVM process id to attach to")
123 Integer pid) throws Exception {
124
125 //
126 boolean copyCmd = cmdMode != ResourceMode.read && cmds != null && cmds.size() > 0;
127 boolean copyConf = confMode != ResourceMode.read && confs != null && confs.size() > 0;
128
129 //
130 if (copyCmd) {
131 File dst = new File(cmds.get(0));
132 if (!dst.isDirectory()) {
133 throw new Exception("Directory " + dst.getAbsolutePath() + " does not exist");
134 }
135 FS fs = new FS();
136 fs.mount(Thread.currentThread().getContextClassLoader(), Path.get("/crash/commands/"));
137 org.crsh.vfs.File f = fs.get(Path.get("/"));
138 log.info("Copying command classpath resources");
139 copy(f, dst);
140 }
141
142 //
143 if (copyConf) {
144 File dst = new File(confs.get(0));
145 if (!dst.isDirectory()) {
146 throw new Exception("Directory " + dst.getAbsolutePath() + " does not exist");
147 }
148 FS fs = new FS();
149 fs.mount(Thread.currentThread().getContextClassLoader(), Path.get("/crash/"));
150 org.crsh.vfs.File f = fs.get(Path.get("/"));
151 log.info("Copying conf classpath resources");
152 for (org.crsh.vfs.File child : f.children()) {
153 if (!child.isDir()) {
154 copy(child, new File(dst, child.getName()));
155 }
156 }
157 }
158
159 //
160 CloseableList closeable = new CloseableList();
161 Shell shell;
162 if (pid != null) {
163
164 // Standalone
165 log.log(Level.INFO, "Attaching to remote process " + pid);
166 final VirtualMachine vm = VirtualMachine.attach("" + pid);
167
168 // Compute classpath
169 String classpath = System.getProperty("java.class.path");
170 String sep = System.getProperty("path.separator");
171 StringBuilder buffer = new StringBuilder();
172 for (String path : classpath.split(Pattern.quote(sep))) {
173 File file = new File(path);
174 if (file.exists()) {
175 if (buffer.length() > 0) {
176 buffer.append(' ');
177 }
178 buffer.append(file.getCanonicalPath());
179 }
180 }
181
182 // Create manifest
183 Manifest manifest = new Manifest();
184 Attributes attributes = manifest.getMainAttributes();
185 attributes.putValue("Agent-Class", Agent.class.getName());
186 attributes.put(Attributes.Name.MANIFEST_VERSION, "1.0");
187 attributes.put(Attributes.Name.CLASS_PATH, buffer.toString());
188
189 // Create jar file
190 File agentFile = File.createTempFile("agent", ".jar");
191 agentFile.deleteOnExit();
192 JarOutputStream out = new JarOutputStream(new FileOutputStream(agentFile), manifest);
193 out.close();
194 log.log(Level.INFO, "Created agent jar " + agentFile.getCanonicalPath());
195
196 //
197 RemoteServer server = new RemoteServer(0);
198 int port = server.bind();
199 log.log(Level.INFO, "Callback server set on port " + port);
200
201 // Build the options
202 StringBuilder sb = new StringBuilder();
203
204 // Rewrite canonical path
205 if (copyCmd) {
206 sb.append("--cmd-mode copy ");
207 } else {
208 sb.append("--cmd-mode read ");
209 }
210 if (cmds != null) {
211 for (String cmd : cmds) {
212 File cmdPath = new File(cmd);
213 if (cmdPath.exists()) {
214 sb.append("--cmd ");
215 Delimiter.EMPTY.escape(cmdPath.getCanonicalPath(), sb);
216 sb.append(' ');
217 }
218 }
219 }
220
221 // Rewrite canonical path
222 if (copyCmd) {
223 sb.append("--conf-mode copy ");
224 } else {
225 sb.append("--conf-mode read ");
226 }
227 if (confs != null) {
228 for (String conf : confs) {
229 File confPath = new File(conf);
230 if (confPath.exists()) {
231 sb.append("--conf ");
232 Delimiter.EMPTY.escape(confPath.getCanonicalPath(), sb);
233 sb.append(' ');
234 }
235 }
236 }
237
238 // Propagate canonical config
239 if (properties != null) {
240 for (String property : properties) {
241 sb.append("--property ");
242 Delimiter.EMPTY.escape(property, sb);
243 sb.append(' ');
244 }
245 }
246
247 // Append callback port
248 sb.append(port);
249
250 //
251 String options = sb.toString();
252 log.log(Level.INFO, "Loading agent with command " + options + " as agent " + agentFile.getCanonicalPath());
253 vm.loadAgent(agentFile.getCanonicalPath(), options);
254
255 //
256 server.accept();
257
258 //
259 shell = server.getShell();
260 closeable.add(new Closeable() {
261 public void close() throws IOException {
262 vm.detach();
263 }
264 });
265 } else {
266 final Bootstrap bootstrap = new Bootstrap(Thread.currentThread().getContextClassLoader());
267
268 //
269 if (!copyCmd) {
270 bootstrap.addToCmdPath(Path.get("/crash/commands/"));
271 }
272 if (cmds != null) {
273 for (String cmd : cmds) {
274 File cmdPath = new File(cmd);
275 bootstrap.addToCmdPath(cmdPath);
276 }
277 }
278
279 //
280 if (!copyConf) {
281 bootstrap.addToConfPath(Path.get("/crash/"));
282 }
283 if (confs != null) {
284 for (String conf : confs) {
285 File confPath = new File(conf);
286 bootstrap.addToConfPath(confPath);
287 }
288 }
289
290 //
291 if (properties != null) {
292 Properties config = new Properties();
293 for (String property : properties) {
294 int index = property.indexOf('=');
295 if (index == -1) {
296 config.setProperty(property, "");
297 } else {
298 config.setProperty(property.substring(0, index), property.substring(index + 1));
299 }
300 }
301 bootstrap.setConfig(config);
302 }
303
304 // Register shutdown hook
305 Runtime.getRuntime().addShutdownHook(new Thread() {
306 @Override
307 public void run() {
308 // Should trigger some kind of run interruption
309 }
310 });
311
312 // Do bootstrap
313 bootstrap.bootstrap();
314 Runtime.getRuntime().addShutdownHook(new Thread(){
315 @Override
316 public void run() {
317 bootstrap.shutdown();
318 }
319 });
320
321 //
322 ShellFactory factory = bootstrap.getContext().getPlugin(ShellFactory.class);
323 shell = factory.create(null);
324 closeable = null;
325 }
326
327 //
328 if (nonInteractive == null || !nonInteractive) {
329
330 // Start crash for this command line
331 final Terminal term = TerminalFactory.create();
332 term.init();
333 ConsoleReader reader = new ConsoleReader(null, new FileInputStream(FileDescriptor.in), System.out, term);
334 Runtime.getRuntime().addShutdownHook(new Thread(){
335 @Override
336 public void run() {
337 try {
338 term.restore();
339 }
340 catch (Exception ignore) {
341 }
342 }
343 });
344
345 AnsiConsole.systemInstall();
346
347 final PrintWriter out = new PrintWriter(AnsiConsole.out);
348 final JLineProcessor processor = new JLineProcessor(
349 shell,
350 reader,
351 out
352 );
353 reader.addCompleter(processor);
354
355 // Install signal handler
356 InterruptHandler ih = new InterruptHandler(new Runnable() {
357 public void run() {
358 processor.cancel();
359 }
360 });
361 ih.install();
362
363 //
364 try {
365 processor.run();
366 }
367 catch (Throwable t) {
368 t.printStackTrace();
369 }
370 finally {
371
372 //
373 AnsiConsole.systemUninstall();
374
375 //
376 if (closeable != null) {
377 Safe.close(closeable);
378 }
379
380 // Force exit
381 System.exit(0);
382 }
383 }
384 }
385
386 public static void main(String[] args) throws Exception {
387
388 StringBuilder line = new StringBuilder();
389 for (int i = 0;i < args.length;i++) {
390 if (i > 0) {
391 line.append(' ');
392 }
393 Delimiter.EMPTY.escape(args[i], line);
394 }
395
396 //
397 CRaSH main = new CRaSH();
398 InvocationMatcher<CRaSH> matcher = main.descriptor.invoker("main");
399 InvocationMatch<CRaSH> match = matcher.match(line.toString());
400 match.invoke(new CRaSH());
401 }
402 }