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={"c","cmd"})
104 @Usage("adds a dir to the command path")
105 List<String> cmds,
106 @Option(names={"conf"})
107 @Usage("adds a dir to the conf path")
108 List<String> confs,
109 @Option(names={"p","property"})
110 @Usage("set a property of the form a=b")
111 List<String> properties,
112 @Option(names = {"cmd-mode"})
113 @Usage("the cmd mode (read or copy), copy mode requires at least one cmd path to be specified")
114 ResourceMode cmdMode,
115 @Option(names = {"conf-mode"})
116 @Usage("the conf mode (read of copy), copy mode requires at least one conf path to be specified")
117 ResourceMode confMode,
118 @Argument(name = "pid")
119 @Usage("the optional JVM process id to attach to")
120 Integer pid) throws Exception {
121
122 //
123 boolean copyCmd = cmdMode != ResourceMode.read && cmds != null && cmds.size() > 0;
124 boolean copyConf = confMode != ResourceMode.read && confs != null && confs.size() > 0;
125
126 //
127 if (copyCmd) {
128 File dst = new File(cmds.get(0));
129 if (!dst.isDirectory()) {
130 throw new Exception("Directory " + dst.getAbsolutePath() + " does not exist");
131 }
132 FS fs = new FS();
133 fs.mount(Thread.currentThread().getContextClassLoader(), Path.get("/crash/commands/"));
134 org.crsh.vfs.File f = fs.get(Path.get("/"));
135 log.info("Copying command classpath resources");
136 copy(f, dst);
137 }
138
139 //
140 if (copyConf) {
141 File dst = new File(confs.get(0));
142 if (!dst.isDirectory()) {
143 throw new Exception("Directory " + dst.getAbsolutePath() + " does not exist");
144 }
145 FS fs = new FS();
146 fs.mount(Thread.currentThread().getContextClassLoader(), Path.get("/crash/"));
147 org.crsh.vfs.File f = fs.get(Path.get("/"));
148 log.info("Copying conf classpath resources");
149 for (org.crsh.vfs.File child : f.children()) {
150 if (!child.isDir()) {
151 copy(child, new File(dst, child.getName()));
152 }
153 }
154 }
155
156 //
157 CloseableList closeable = new CloseableList();
158 Shell shell;
159 if (pid != null) {
160
161 // Standalone
162 log.log(Level.INFO, "Attaching to remote process " + pid);
163 final VirtualMachine vm = VirtualMachine.attach("" + pid);
164
165 // Compute classpath
166 String classpath = System.getProperty("java.class.path");
167 String sep = System.getProperty("path.separator");
168 StringBuilder buffer = new StringBuilder();
169 for (String path : classpath.split(Pattern.quote(sep))) {
170 File file = new File(path);
171 if (file.exists()) {
172 if (buffer.length() > 0) {
173 buffer.append(' ');
174 }
175 buffer.append(file.getCanonicalPath());
176 }
177 }
178
179 // Create manifest
180 Manifest manifest = new Manifest();
181 Attributes attributes = manifest.getMainAttributes();
182 attributes.putValue("Agent-Class", Agent.class.getName());
183 attributes.put(Attributes.Name.MANIFEST_VERSION, "1.0");
184 attributes.put(Attributes.Name.CLASS_PATH, buffer.toString());
185
186 // Create jar file
187 File agentFile = File.createTempFile("agent", ".jar");
188 agentFile.deleteOnExit();
189 JarOutputStream out = new JarOutputStream(new FileOutputStream(agentFile), manifest);
190 out.close();
191 log.log(Level.INFO, "Created agent jar " + agentFile.getCanonicalPath());
192
193 //
194 RemoteServer server = new RemoteServer(0);
195 int port = server.bind();
196 log.log(Level.INFO, "Callback server set on port " + port);
197
198 // Build the options
199 StringBuilder sb = new StringBuilder();
200
201 // Rewrite canonical path
202 if (copyCmd) {
203 sb.append("--cmd-mode copy ");
204 } else {
205 sb.append("--cmd-mode read ");
206 }
207 if (cmds != null) {
208 for (String cmd : cmds) {
209 File cmdPath = new File(cmd);
210 if (cmdPath.exists()) {
211 sb.append("--cmd ");
212 Delimiter.EMPTY.escape(cmdPath.getCanonicalPath(), sb);
213 sb.append(' ');
214 }
215 }
216 }
217
218 // Rewrite canonical path
219 if (copyCmd) {
220 sb.append("--conf-mode copy ");
221 } else {
222 sb.append("--conf-mode read ");
223 }
224 if (confs != null) {
225 for (String conf : confs) {
226 File confPath = new File(conf);
227 if (confPath.exists()) {
228 sb.append("--conf ");
229 Delimiter.EMPTY.escape(confPath.getCanonicalPath(), sb);
230 sb.append(' ');
231 }
232 }
233 }
234
235 // Propagate canonical config
236 if (properties != null) {
237 for (String property : properties) {
238 sb.append("--property ");
239 Delimiter.EMPTY.escape(property, sb);
240 sb.append(' ');
241 }
242 }
243
244 // Append callback port
245 sb.append(port);
246
247 //
248 String options = sb.toString();
249 log.log(Level.INFO, "Loading agent with command " + options + " as agent " + agentFile.getCanonicalPath());
250 vm.loadAgent(agentFile.getCanonicalPath(), options);
251
252 //
253 server.accept();
254
255 //
256 shell = server.getShell();
257 closeable.add(new Closeable() {
258 public void close() throws IOException {
259 vm.detach();
260 }
261 });
262 } else {
263 final Bootstrap bootstrap = new Bootstrap(Thread.currentThread().getContextClassLoader());
264
265 //
266 if (!copyCmd) {
267 bootstrap.addToCmdPath(Path.get("/crash/commands/"));
268 }
269 if (cmds != null) {
270 for (String cmd : cmds) {
271 File cmdPath = new File(cmd);
272 bootstrap.addToCmdPath(cmdPath);
273 }
274 }
275
276 //
277 if (!copyConf) {
278 bootstrap.addToConfPath(Path.get("/crash/"));
279 }
280 if (confs != null) {
281 for (String conf : confs) {
282 File confPath = new File(conf);
283 bootstrap.addToConfPath(confPath);
284 }
285 }
286
287 //
288 if (properties != null) {
289 Properties config = new Properties();
290 for (String property : properties) {
291 int index = property.indexOf('=');
292 if (index == -1) {
293 config.setProperty(property, "");
294 } else {
295 config.setProperty(property.substring(0, index), property.substring(index + 1));
296 }
297 }
298 bootstrap.setConfig(config);
299 }
300
301 // Register shutdown hook
302 Runtime.getRuntime().addShutdownHook(new Thread() {
303 @Override
304 public void run() {
305 // Should trigger some kind of run interruption
306 }
307 });
308
309 // Do bootstrap
310 bootstrap.bootstrap();
311 Runtime.getRuntime().addShutdownHook(new Thread(){
312 @Override
313 public void run() {
314 bootstrap.shutdown();
315 }
316 });
317
318 //
319 ShellFactory factory = bootstrap.getContext().getPlugin(ShellFactory.class);
320 shell = factory.create(null);
321 closeable = null;
322 }
323
324 // Start crash for this command line
325 final Terminal term = TerminalFactory.create();
326 term.init();
327 ConsoleReader reader = new ConsoleReader(null, new FileInputStream(FileDescriptor.in), System.out, term);
328 Runtime.getRuntime().addShutdownHook(new Thread(){
329 @Override
330 public void run() {
331 try {
332 term.restore();
333 }
334 catch (Exception ignore) {
335 }
336 }
337 });
338
339 AnsiConsole.systemInstall();
340
341 final PrintWriter out = new PrintWriter(AnsiConsole.out);
342 final JLineProcessor processor = new JLineProcessor(
343 shell,
344 reader,
345 out
346 );
347 reader.addCompleter(processor);
348
349 // Install signal handler
350 InterruptHandler ih = new InterruptHandler(new Runnable() {
351 public void run() {
352 processor.cancel();
353 }
354 });
355 ih.install();
356
357 //
358 try {
359 processor.run();
360 }
361 catch (Throwable t) {
362 t.printStackTrace();
363 }
364 finally {
365
366 //
367 AnsiConsole.systemUninstall();
368
369 //
370 if (closeable != null) {
371 Safe.close(closeable);
372 }
373
374 // Force exit
375 System.exit(0);
376 }
377 }
378
379 public static void main(String[] args) throws Exception {
380
381 StringBuilder line = new StringBuilder();
382 for (int i = 0;i < args.length;i++) {
383 if (i > 0) {
384 line.append(' ');
385 }
386 Delimiter.EMPTY.escape(args[i], line);
387 }
388
389 //
390 CRaSH main = new CRaSH();
391 InvocationMatcher<CRaSH> matcher = main.descriptor.invoker("main");
392 InvocationMatch<CRaSH> match = matcher.match(line.toString());
393 match.invoke(new CRaSH());
394 }
395 }