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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
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*
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* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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* language governing permissions and limitations under the License.
*
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* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
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*
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*/
// Portions Copyright [2019-2021] Payara Foundation and/or affiliates
package org.glassfish.osgi.cli.interactive;
import com.sun.enterprise.admin.cli.*;
import com.sun.enterprise.admin.cli.remote.RemoteCLICommand;
import com.sun.enterprise.admin.util.CommandModelData;
import com.sun.enterprise.universal.i18n.LocalStringsImpl;
import java.io.*;
import java.nio.charset.Charset;
import java.util.*;
import java.util.logging.Level;
import jakarta.inject.Inject;
import org.glassfish.api.I18n;
import org.glassfish.api.Param;
import org.glassfish.api.admin.CommandException;
import org.glassfish.api.admin.CommandModel.ParamModel;
import org.glassfish.api.admin.CommandValidationException;
import org.glassfish.api.admin.InvalidCommandException;
import org.glassfish.hk2.api.*;
import org.glassfish.hk2.utilities.BuilderHelper;
import org.jline.reader.Completer;
import org.jline.reader.EndOfFileException;
import org.jline.reader.LineReader;
import org.jline.reader.LineReaderBuilder;
import org.jline.reader.UserInterruptException;
import org.jline.reader.impl.completer.NullCompleter;
import org.jline.reader.impl.completer.StringsCompleter;
import org.jline.terminal.Terminal;
import org.jline.terminal.TerminalBuilder;
import org.jline.terminal.impl.ExternalTerminal;
import org.jvnet.hk2.annotations.Service;
/**
* A simple local asadmin sub-command to establish an interactive osgi shell.
*
* This class is forked from com.sun.enterprise.admin.cli.MultimodeCommand
*
* Original code authors:
* केदार([email protected])
* Bill Shannon
* @author ancoron
*/
@Service(name = "osgi-shell")
@I18n("osgi-shell")
@PerLookup
public class LocalOSGiShellCommand extends CLICommand {
private final static class NullOutputStream extends OutputStream {
NullOutputStream() {
// make visible
}
@Override
public void write(int b) throws IOException {
return;
}
@Override
public void write(byte[] b) throws IOException {
return;
}
@Override
public void write(byte[] b, int off, int len) throws IOException {
return;
}
}
protected static final String REMOTE_COMMAND = "osgi";
protected static final String SESSIONID_OPTION = "--session-id";
protected static final String SESSION_OPTION = "--session";
protected static final String SESSION_OPTION_EXECUTE = "execute";
protected static final String SESSION_OPTION_START = "new";
protected static final String SESSION_OPTION_STOP = "stop";
@Inject
private ServiceLocator locator;
@Param(name = "instance", optional = true)
private String instance;
@Param(optional = true, shortName = "f")
private File file;
@Param(name = "printprompt", optional = true)
private Boolean printPromptOpt;
private boolean printPrompt;
@Param(optional = true)
private String encoding;
private boolean echo; // saved echo flag
private RemoteCLICommand cmd; // the remote sub-command
private String shellType;
// re-using existing strings...
private static final LocalStringsImpl strings =
new LocalStringsImpl(MultimodeCommand.class);
protected String[] enhanceForTarget(String[] args) {
if(instance != null) {
String[] targetArgs = new String[args.length + 2];
targetArgs[1] = "--instance";
targetArgs[2] = instance;
System.arraycopy(args, 0, targetArgs, 0, 1);
System.arraycopy(args, 1, targetArgs, 3, args.length - 1);
args = targetArgs;
}
return args;
}
protected String[] prepareArguments(String sessionId, String[] args) {
if(sessionId != null) {
// attach command to remote session...
String[] sessionArgs = new String[args.length + 5];
sessionArgs[0] = REMOTE_COMMAND;
sessionArgs[1] = SESSION_OPTION;
sessionArgs[2] = SESSION_OPTION_EXECUTE;
sessionArgs[3] = SESSIONID_OPTION;
sessionArgs[4] = sessionId;
System.arraycopy(args, 0, sessionArgs, 5, args.length);
args = sessionArgs;
} else {
String[] osgiArgs = new String[args.length + 1];
osgiArgs[0] = REMOTE_COMMAND;
System.arraycopy(args, 0, osgiArgs, 1, args.length);
args = osgiArgs;
}
return args;
}
protected String startSession() throws CommandException {
String sessionId = null;
if("gogo".equals(shellType)) {
// start a remote session...
String[] args = {REMOTE_COMMAND, SESSION_OPTION,
SESSION_OPTION_START};
args = enhanceForTarget(args);
sessionId = cmd.executeAndReturnOutput(args).trim();
}
return sessionId;
}
protected int stopSession(String sessionId) throws CommandException {
int rc = 0;
if(sessionId != null) {
// stop the remote session...
String[] args = {REMOTE_COMMAND, SESSION_OPTION,
SESSION_OPTION_STOP, SESSIONID_OPTION, sessionId};
args = enhanceForTarget(args);
rc = cmd.execute(args);
}
return rc;
}
/**
* The validate method validates that the type and quantity of
* parameters and operands matches the requirements for this
* command. The validate method supplies missing options from
* the environment.
*/
@Override
protected void validate()
throws CommandException, CommandValidationException {
if (printPromptOpt != null) {
printPrompt = printPromptOpt.booleanValue();
} else {
printPrompt = programOpts.isInteractive();
}
/*
* Save value of --echo because CLICommand will reset it
* before calling our executeCommand method but we want it
* to also apply to all commands in multimode.
*/
echo = programOpts.isEcho();
}
/**
* In the usage message modify the --printprompt option to have a
* default based on the --interactive option.
*/
@Override
protected Collection usageOptions() {
Collection opts = commandModel.getParameters();
Set uopts = new LinkedHashSet();
ParamModel p = new CommandModelData.ParamModelData("printprompt",
boolean.class, true,
Boolean.toString(programOpts.isInteractive()));
for (ParamModel pm : opts) {
if (pm.getName().equals("printprompt")) {
uopts.add(p);
} else {
uopts.add(pm);
}
}
return uopts;
}
@Override
protected int executeCommand()
throws CommandException, CommandValidationException {
LineReader reader = null;
if (cmd == null) {
throw new CommandException("Remote command 'osgi' is not available.");
}
programOpts.setEcho(echo); // restore echo flag, saved in validate
try {
if (encoding != null) {
// see Configuration.getEncoding()...
System.setProperty("input.encoding", encoding);
}
String[] args = new String[]{REMOTE_COMMAND,
"asadmin-osgi-shell"};
args = enhanceForTarget(args);
shellType = cmd.executeAndReturnOutput(args).trim();
if (file == null) {
if (terminal != null) {
//Pause the asadmin terminal
terminal.pause();
}
System.out.println(strings.get("multimodeIntro"));
Terminal osgiShellTerminal = TerminalBuilder.builder()
.name(REMOTE_COMMAND)
.system(true)
.streams(new FileInputStream(FileDescriptor.in), System.out)
.build();
reader = LineReaderBuilder.builder()
.appName(REMOTE_COMMAND)
.terminal(osgiShellTerminal)
.completer(getCommandCompleter())
.build();
reader.unsetOpt(LineReader.Option.INSERT_TAB);
return executeCommands(reader);
}
printPrompt = false;
if (!file.canRead()) {
throw new CommandException("File: " + file
+ " can not be read");
}
try (Terminal osgiShellTerminal = new ExternalTerminal(REMOTE_COMMAND, "",
new FileInputStream(file), new NullOutputStream(), encoding != null ? Charset.forName(encoding) : Charset.defaultCharset())) {
reader = LineReaderBuilder.builder()
.terminal(osgiShellTerminal)
.appName(REMOTE_COMMAND)
.build();
return executeCommands(reader); // NB: wrapper on general in/out stream does not need closing by try-with-resource
}
} catch (IOException e) {
throw new CommandException(e);
} finally {
if (reader != null && reader.getTerminal() != null) {
try {
reader.getTerminal().close();
} catch (IOException ioe) {
logger.log(Level.WARNING, "Error closing OSFI Shell terminal", ioe);
}
}
}
}
/**
* Get the command completion.
*
* TODO: make this non-static!
* TODO: ask remote for dynamically added commands
*
* @return The command completer
*/
private Completer getCommandCompleter() {
if("gogo".equals(shellType)) {
return new StringsCompleter(
"bundlelevel",
"cd",
"frameworklevel",
"headers",
"help",
"inspect",
"install",
"lb",
"log",
"ls",
"refresh",
"resolve",
"start",
"stop",
"uninstall",
"update",
"which",
"cat",
"each",
"echo",
"format",
"getopt",
"gosh",
"grep",
"not",
"set",
"sh",
"source",
"tac",
"telnetd",
"type",
"until",
"deploy",
"info",
"javadoc",
"list",
"repos",
"source"
);
} else if("felix".equals(shellType)) {
return new StringsCompleter(
"exit",
"quit",
"help",
"bundlelevel",
"cd",
"find",
"headers",
"inspect",
"install",
"log",
"ps",
"refresh",
"resolve",
"scr",
"shutdown",
"start",
"startlevel",
"stop",
"sysprop",
"uninstall",
"update",
"version"
);
}
return new NullCompleter();
}
/**
* Read commands from the specified BufferedReader
* and execute them. If printPrompt is set, prompt first.
*
* @return the exit code of the last command executed
*/
private int executeCommands(LineReader reader)
throws CommandException, CommandValidationException, IOException {
String line = null;
int rc = 0;
/*
* Any program options we start with are copied to the environment
* to serve as defaults for commands we run, and then we give each
* command an empty program options.
*/
programOpts.toEnvironment(env);
String sessionId = startSession();
try {
for (;;) {
try {
if (printPrompt) {
line = reader.readLine(shellType + "$ ");
} else {
line = reader.readLine();
}
if (line == null) {
if (printPrompt) {
System.out.println();
}
break;
}
} catch (UserInterruptException | EndOfFileException e) {
// Ignore
break;
}
if (line.trim().startsWith("#")) // ignore comment lines
{
continue;
}
String[] args = null;
try {
args = getArgs(line);
} catch (ArgumentTokenizer.ArgumentException ex) {
logger.info(ex.getMessage());
continue;
}
if (args.length == 0) {
continue;
}
String command = args[0];
if (command.trim().length() == 0) {
continue;
}
// handle built-in exit and quit commands
// XXX - care about their arguments?
if (command.equals("exit") || command.equals("quit")) {
if (terminal != null && terminal.paused()) {
terminal.resume();
}
break;
}
ProgramOptions po = null;
try {
/*
* Every command gets its own copy of program options
* so that any program options specified in its
* command line options don't effect other commands.
* But all commands share the same environment.
*/
po = new ProgramOptions(env);
// copy over AsadminMain info
po.setClassPath(programOpts.getClassPath());
po.setClassName(programOpts.getClassName());
// remove the old one and replace it
atomicReplace(locator, po);
args = prepareArguments(sessionId, args);
args = enhanceForTarget(args);
String output = cmd.executeAndReturnOutput(args).trim();
if(output != null && output.length() > 0) {
logger.info(output);
}
} catch (CommandValidationException cve) {
logger.severe(cve.getMessage());
logger.severe(cmd.getUsage());
rc = ERROR;
} catch (InvalidCommandException ice) {
// find closest match with local or remote commands
logger.severe(ice.getMessage());
} catch (CommandException ce) {
logger.severe(ce.getMessage());
rc = ERROR;
} finally {
// restore the original program options
// XXX - is this necessary?
atomicReplace(locator, programOpts);
}
CLIUtil.writeCommandToDebugLog(name, env, args, rc);
}
} finally {
// what if something breaks on the wire?
rc = stopSession(sessionId);
}
return rc;
}
private static void atomicReplace(ServiceLocator locator, ProgramOptions options) {
DynamicConfigurationService dcs = locator.getService(DynamicConfigurationService.class);
DynamicConfiguration config = dcs.createDynamicConfiguration();
config.addUnbindFilter(BuilderHelper.createContractFilter(ProgramOptions.class.getName()));
ActiveDescriptor desc = BuilderHelper.createConstantDescriptor(
options, null, ProgramOptions.class);
config.addActiveDescriptor(desc);
config.commit();
}
private String[] getArgs(String line)
throws ArgumentTokenizer.ArgumentException {
List args = new ArrayList();
ArgumentTokenizer t = new ArgumentTokenizer(line);
while (t.hasMoreTokens()) {
args.add(t.nextToken());
}
return args.toArray(new String[args.size()]);
}
@Override
public void postConstruct() {
super.postConstruct();
try {
cmd = new RemoteCLICommand(REMOTE_COMMAND,
locator.getService(ProgramOptions.class),
locator.getService(Environment.class));
} catch (CommandException ex) {
// ignore - will be handled by execute()
}
}
}
