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   1 /**
   2  *
   3  */
   4 package net.sourceforge.phpeclipse.xdebug.php.model;
   5
   6 import net.sourceforge.phpeclipse.xdebug.core.Base64;
   7 import net.sourceforge.phpeclipse.xdebug.core.DebugConnection;
   8 import net.sourceforge.phpeclipse.xdebug.core.PHPDebugUtils;
   9 import net.sourceforge.phpeclipse.xdebug.core.XDebugCorePlugin;
  10 import net.sourceforge.phpeclipse.xdebug.core.DebugConnection.DebugResponse;
  11 import net.sourceforge.phpeclipse.xdebug.php.launching.IXDebugConstants;
  12
  13 import org.eclipse.core.resources.IMarker;
  14 import org.eclipse.core.resources.IMarkerDelta;
  15 import org.eclipse.core.runtime.CoreException;
  16 import org.eclipse.debug.core.DebugEvent;
  17 import org.eclipse.debug.core.DebugException;
  18 import org.eclipse.debug.core.DebugPlugin;
  19 import org.eclipse.debug.core.IDebugEventSetListener;
  20 import org.eclipse.debug.core.ILaunch;
  21 import org.eclipse.debug.core.model.IBreakpoint;
  22 import org.eclipse.debug.core.model.IDebugTarget;
  23 import org.eclipse.debug.core.model.ILineBreakpoint;
  24 import org.eclipse.debug.core.model.IMemoryBlock;
  25 import org.eclipse.debug.core.model.IProcess;
  26 import org.eclipse.debug.core.model.IStackFrame;
  27 import org.eclipse.debug.core.model.IThread;
  28 import org.eclipse.debug.core.model.IValue;
  29 import org.w3c.dom.Node;
  30 import org.w3c.dom.NodeList;
  31
  32 /**
  33  * @author Christian
  34  *
  35  */
  36 public class XDebugTarget extends XDebugElement implements IDebugTarget,
  37                 IDebugEventSetListener {
  38         // associated system process (VM)
  39         private IProcess fProcess;
  40
  41         // containing launch object
  42         private ILaunch fLaunch;
  43
  44         // debugPort
  45         private int fDebugPort;
  46
  47         // program name
  48         // private String fName;
  49
  50         // suspend state
  51         private boolean fSuspended = true;
  52
  53         // terminated state
  54         private boolean fTerminated = false;
  55
  56         // threads
  57         private XDebugThread fThread;
  58
  59         private IThread[] fThreads;
  60
  61         // event dispatch job
  62         // private EventDispatchJob fEventDispatch;
  63
  64         private DebugConnection fDebugConnection;
  65
  66         // private DebugResponse lastResponse;
  67
  68         /**
  69          * Constructs a new debug target in the given launch for the associated PDA
  70          * VM process.
  71          *
  72          * @param launch
  73          *            containing launch
  74          * @param debugPort
  75          *            port to read events from
  76          * @exception CoreException
  77          *                if unable to connect to host
  78          */
  79         public XDebugTarget(ILaunch launch, IProcess process, int debugPort)
  80                         throws CoreException {
  81                 super(null);
  82                 fLaunch = launch;
  83                 fProcess = process;
  84                 fTarget = this;
  85                 fDebugConnection = new DebugConnection(this, debugPort);
  86                 fThread = new XDebugThread(this);
  87                 fThreads = new IThread[] { fThread };
  88                 DebugPlugin.getDefault().getBreakpointManager().addBreakpointListener(
  89                                 this);
  90                 DebugPlugin.getDefault().addDebugEventListener(this);
  91         }
  92
  93         /*
  94          * (non-Javadoc)
  95          *
  96          * @see org.eclipse.debug.core.model.IDebugTarget#getProcess()
  97          */
  98         public IProcess getProcess() {
  99                 return fProcess;
 100         }
 101
 102         /*
 103          * (non-Javadoc)
 104          *
 105          * @see org.eclipse.debug.core.model.IDebugTarget#getThreads()
 106          */
 107         public IThread[] getThreads() throws DebugException {
 108                 return fThreads;
 109         }
 110
 111         /*
 112          * (non-Javadoc)
 113          *
 114          * @see org.eclipse.debug.core.model.IDebugTarget#hasThreads()
 115          */
 116         public boolean hasThreads() throws DebugException {
 117                 return (fThreads.length > 0);
 118         }
 119
 120         /*
 121          * (non-Javadoc)
 122          *
 123          * @see org.eclipse.debug.core.model.IDebugTarget#getName()
 124          */
 125         public String getName() throws DebugException {
 126                 return "PHP XDebug Client at localhost:" + fDebugPort;
 127         }
 128
 129         /*
 130          * (non-Javadoc)
 131          *
 132          * @see org.eclipse.debug.core.model.IDebugTarget#supportsBreakpoint(org.eclipse.debug.core.model.IBreakpoint)
 133          */
 134         public boolean supportsBreakpoint(IBreakpoint breakpoint) {
 135                 if (breakpoint.getModelIdentifier().equals(
 136                                 IXDebugConstants.ID_PHP_DEBUG_MODEL)) {
 137                         return true;
 138                 }
 139                 return false;
 140         }
 141
 142         /*
 143          * (non-Javadoc)
 144          *
 145          * @see org.eclipse.debug.core.model.IDebugElement#getDebugTarget()
 146          */
 147         public IDebugTarget getDebugTarget() {
 148                 return this;
 149         }
 150
 151         /*
 152          * (non-Javadoc)
 153          *
 154          * @see org.eclipse.debug.core.model.IDebugElement#getLaunch()
 155          */
 156         public ILaunch getLaunch() {
 157                 return fLaunch;
 158         }
 159
 160         /*
 161          * (non-Javadoc)
 162          *
 163          * @see org.eclipse.debug.core.model.ITerminate#canTerminate()
 164          */
 165         public boolean canTerminate() {
 166                 return getProcess().canTerminate();
 167                 // return false;
 168         }
 169
 170         /*
 171          * (non-Javadoc)
 172          *
 173          * @see org.eclipse.debug.core.model.ITerminate#isTerminated()
 174          */
 175         public boolean isTerminated() {
 176                 // return getProcess().isTerminated();
 177                 return fTerminated;
 178         }
 179
 180         /*
 181          * (non-Javadoc)
 182          *
 183          * @see org.eclipse.debug.core.model.ITerminate#terminate()
 184          */
 185         public void terminate() throws DebugException {
 186                 fDebugConnection.sendRequest("stop");
 187         }
 188
 189         /*
 190          * (non-Javadoc)
 191          *
 192          * @see org.eclipse.debug.core.model.ISuspendResume#canResume()
 193          */
 194         public boolean canResume() {
 195                 return !isTerminated() && isSuspended();
 196         }
 197
 198         /*
 199          * (non-Javadoc)
 200          *
 201          * @see org.eclipse.debug.core.model.ISuspendResume#canSuspend()
 202          */
 203         public boolean canSuspend() {
 204                 return !isTerminated() && !isSuspended();
 205         }
 206
 207         /*
 208          * (non-Javadoc)
 209          *
 210          * @see org.eclipse.debug.core.model.ISuspendResume#isSuspended()
 211          */
 212         public boolean isSuspended() {
 213                 return fSuspended;
 214         }
 215
 216         /*
 217          * (non-Javadoc)
 218          *
 219          * @see org.eclipse.debug.core.model.ISuspendResume#resume()
 220          */
 221         public void resume() throws DebugException {
 222                 fDebugConnection.sendRequest("run");
 223         }
 224
 225         /**
 226          * Notification the target has resumed for the given reason
 227          *
 228          * @param detail
 229          *            reason for the resume
 230          */
 231         private void resumed(int detail) {
 232                 fSuspended = false;
 233                 fThread.fireResumeEvent(detail);
 234         }
 235
 236         /**
 237          * Notification the target has suspended for the given reason
 238          *
 239          * @param detail
 240          *            reason for the suspend
 241          */
 242         public void suspended(int detail) {
 243                 fSuspended = true;
 244                 fThread.fireSuspendEvent(detail);
 245         }
 246
 247         /*
 248          * (non-Javadoc)
 249          *
 250          * @see org.eclipse.debug.core.model.ISuspendResume#suspend()
 251          */
 252         public void suspend() throws DebugException {
 253         }
 254
 255         /*
 256          * (non-Javadoc)
 257          *
 258          * @see org.eclipse.debug.core.IBreakpointListener#breakpointAdded(org.eclipse.debug.core.model.IBreakpoint)
 259          */
 260         public void breakpointAdded(IBreakpoint breakpoint) {
 261
 262                 if (supportsBreakpoint(breakpoint)) {
 263                         try {
 264                                 if (breakpoint.isEnabled()) {
 265                                         IMarker marker = breakpoint.getMarker();
 266                                         if (marker != null) {
 267                                                 try {
 268                                                         String fileName = PHPDebugUtils.escapeString(marker
 269                                                                         .getResource().getLocation().toString());
 270                                                         String arg = "-t line -f file:///"
 271                                                                         + fileName
 272                                                                         + " -n "
 273                                                                         + ((ILineBreakpoint) breakpoint)
 274                                                                                         .getLineNumber();
 275                                                         int id = fDebugConnection.sendRequest(
 276                                                                         "breakpoint_set", arg);
 277                                                         // set the marker Attribute to make later
 278                                                         // idetification possible
 279                                                         // TODO: make sure that attribute is set before
 280                                                         // response from debugger is beeing prosessed
 281                                                         marker.setAttribute(
 282                                                                         XDebugLineBreakpoint.BREAKPOINT_ID, id);
 283
 284                                                 } catch (CoreException e) {
 285                                                 }
 286                                         }
 287                                 }
 288                         } catch (CoreException e) {
 289
 290                         }
 291                 }
 292         }
 293
 294         /*
 295          * (non-Javadoc)
 296          *
 297          * @see org.eclipse.debug.core.IBreakpointListener#breakpointRemoved(org.eclipse.debug.core.model.IBreakpoint,
 298          *      org.eclipse.core.resources.IMarkerDelta)
 299          */
 300         public void breakpointRemoved(IBreakpoint breakpoint, IMarkerDelta delta) {
 301                 if (supportsBreakpoint(breakpoint)) {
 302                         try {
 303                                 int id = ((XDebugLineBreakpoint) breakpoint).getID();
 304                                 if (id > 0)
 305                                         fDebugConnection.sendRequest("breakpoint_remove", "-d "
 306                                                         + id);
 307                         } catch (CoreException e) {
 308                         }
 309                 }
 310         }
 311
 312         /*
 313          * (non-Javadoc)
 314          *
 315          * @see org.eclipse.debug.core.IBreakpointListener#breakpointChanged(org.eclipse.debug.core.model.IBreakpoint,
 316          *      org.eclipse.core.resources.IMarkerDelta)
 317          */
 318         public void breakpointChanged(IBreakpoint breakpoint, IMarkerDelta delta) {
 319                 // if (supportsBreakpoint(breakpoint)) {
 320                 // try {
 321                 // if (breakpoint.isEnabled()) {
 322                 // breakpointAdded(breakpoint);
 323                 // } else {
 324                 // breakpointRemoved(breakpoint, null);
 325                 // }
 326                 // } catch (CoreException e) {
 327                 // }
 328                 // }
 329         }
 330
 331         /*
 332          * (non-Javadoc)
 333          *
 334          * @see org.eclipse.debug.core.model.IDisconnect#canDisconnect()
 335          */
 336         public boolean canDisconnect() {
 337                 return false;
 338         }
 339
 340         /*
 341          * (non-Javadoc)
 342          *
 343          * @see org.eclipse.debug.core.model.IDisconnect#disconnect()
 344          */
 345         public void disconnect() throws DebugException {
 346         }
 347
 348         /*
 349          * (non-Javadoc)
 350          *
 351          * @see org.eclipse.debug.core.model.IDisconnect#isDisconnected()
 352          */
 353         public boolean isDisconnected() {
 354                 return false;
 355         }
 356
 357         /*
 358          * (non-Javadoc)
 359          *
 360          * @see org.eclipse.debug.core.model.IMemoryBlockRetrieval#supportsStorageRetrieval()
 361          */
 362         public boolean supportsStorageRetrieval() {
 363                 return false;
 364         }
 365
 366         /*
 367          * (non-Javadoc)
 368          *
 369          * @see org.eclipse.debug.core.model.IMemoryBlockRetrieval#getMemoryBlock(long,
 370          *      long)
 371          */
 372         public IMemoryBlock getMemoryBlock(long startAddress, long length)
 373                         throws DebugException {
 374                 return null;
 375         }
 376
 377         /**
 378          * Notification we have connected to the PHP debugger and it has started.
 379          * Resume the the debugger.
 380          */
 381         public void started() {
 382
 383                 fThread.setBreakpoints(null);
 384                 fThread.setStepping(false);
 385
 386                 installDeferredBreakpoints();
 387                 try {
 388                         resume();
 389                         // step();
 390                 } catch (DebugException e) {
 391                 }
 392         }
 393
 394         /**
 395          * Install breakpoints that are already registered with the breakpoint
 396          * manager.
 397          */
 398         private void installDeferredBreakpoints() {
 399                 IBreakpoint[] breakpoints = XDebugCorePlugin.getBreakpoints();
 400                 for (int i = 0; i < breakpoints.length; i++) {
 401                         breakpointAdded(breakpoints[i]);
 402                 }
 403         }
 404
 405         /**
 406          * Called when this debug target terminates.
 407          */
 408         public void terminated() {
 409                 fTerminated = true;
 410                 fSuspended = false;
 411                 XDebugCorePlugin.getBreakpointManager().removeBreakpointListener(this);
 412                 fireTerminateEvent();
 413                 DebugPlugin.getDefault().removeDebugEventListener(this);
 414                 fThread.removeEventListeners();
 415         }
 416
 417         /**
 418          * Returns the current stack frames in the target.
 419          *
 420          * @return the current stack frames in the target
 421          * @throws DebugException
 422          *             if unable to perform the request
 423          */
 424         protected IStackFrame[] getStackFrames() throws DebugException {
 425                 int id = fDebugConnection.sendRequest("stack_get");
 426                 DebugResponse lastResponse = fDebugConnection.waitforTransID(id);
 427                 if (lastResponse.isError())
 428                         return new IStackFrame[0];
 429                 Node response = lastResponse.getParentNode();
 430                 NodeList frames = response.getChildNodes();
 431                 IStackFrame[] theFrames = new IStackFrame[frames.getLength()];
 432                 for (int i = 0; i < frames.getLength(); i++) {
 433                         Node stackNode = frames.item(i);
 434                         theFrames[i] = new XDebugStackFrame(fThread, stackNode, i);
 435                 }
 436                 return theFrames;
 437         }
 438
 439         /**
 440          * Single step the interpreter.
 441          *
 442          * @throws DebugException
 443          *             if the request fails
 444          */
 445         protected void step_over() throws DebugException {
 446                 fThread.setStepping(true);
 447                 resumed(DebugEvent.STEP_OVER);
 448                 fDebugConnection.sendRequest("step_over");
 449         }
 450
 451         /**
 452          * Single step the interpreter.
 453          *
 454          * @throws DebugException
 455          *             if the request fails
 456          */
 457         protected void step_into() throws DebugException {
 458                 fThread.setStepping(true);
 459                 resumed(DebugEvent.STEP_INTO);
 460                 fDebugConnection.sendRequest("step_into");
 461         }
 462
 463         /**
 464          * Single step the interpreter.
 465          *
 466          * @throws DebugException
 467          *             if the request fails
 468          */
 469         protected void step_out() throws DebugException {
 470                 fThread.setStepping(true);
 471                 resumed(DebugEvent.STEP_RETURN);
 472                 fDebugConnection.sendRequest("step_out");
 473         }
 474
 475         /**
 476          * Returns the current value of the given variable.
 477          *
 478          * @param variable
 479          * @return variable value
 480          * @throws DebugException
 481          *             if the request fails
 482          */
 483         protected IValue getVariableValue(XDebugVariable variable)
 484                         throws DebugException {
 485                 // synchronized (fDebugSocket) {
 486                 // fDebugConnection.sendRequest("var","" +
 487                 // variable.getStackFrame().getIdentifier() + " " + variable.getName());
 488                 // try {
 489                 // String value = fDebugReader.readLine();
 490                 // //return new XDebugValue(this, value);
 491                 //
 492                 // } catch (IOException e) {
 493                 // abort(MessageFormat.format("Unable to retrieve value for variable
 494                 // {0}", new String[]{variable.getName()}), e);
 495                 // }
 496                 // }
 497                 return null;
 498         }
 499
 500         /**
 501          * Returns the values on the data stack (top down)
 502          *
 503          * @return the values on the data stack (top down)
 504          */
 505         public IValue[] getDataStack() throws DebugException {
 506                 // synchronized (fDebugSocket) {
 507                 // fDebugConnection.sendRequest ("data");
 508                 // try {
 509                 // String valueString = fDebugReader.readLine();
 510                 // if (valueString != null && valueString.length() > 0) {
 511                 // String[] values = valueString.split("\\|");
 512                 // IValue[] theValues = new IValue[values.length];
 513                 // for (int i = 0; i < values.length; i++) {
 514                 // String value = values[values.length - i - 1];
 515                 // // theValues[i] = new XDebugValue(this, value);
 516                 // }
 517                 // return theValues;
 518                 // }
 519                 // } catch (IOException e) {
 520                 // abort("Unable to retrieve data stack", e);
 521                 // }
 522                 // }
 523                 return new IValue[0];
 524         }
 525
 526         public boolean setVarValue(String name, String value) {
 527                 int id = -1;
 528                 String str = Base64.encodeBytes(value.getBytes());
 529                 int len = str.length();
 530
 531                 try {
 532                         id = fDebugConnection.sendRequest("property_set", "-n " + name
 533                                         + " -l " + len + " -- " + str);
 534                 } catch (DebugException e) {
 535                         // TODO Auto-generated catch block
 536                         e.printStackTrace();
 537                 }
 538                 DebugResponse dr = getResponse(id);
 539                 if ((dr.getAttributeValue("success")).equals("1"))
 540                         return true;
 541
 542                 return false;
 543         }
 544
 545         public DebugResponse getResponse(int id) {
 546                 return fDebugConnection.waitforTransID(id);
 547         }
 548
 549         /**
 550          * Sends a request to the Debugengine and waits for an OK.
 551          *
 552          * @param command
 553          *            debug command
 554          * @throws DebugException
 555          *             if the request fails
 556          */
 557
 558         public int sendRequest(String command) throws DebugException {
 559                 return fDebugConnection.sendRequest(command, "");
 560         }
 561
 562         /**
 563          * Sends a request to the Debugengine and waits for an OK.
 564          *
 565          * @param command
 566          *            debug command
 567          * @arguments arguments for the command
 568          * @throws DebugException
 569          *             if the request fails
 570          */
 571
 572         public int sendRequest(String command, String arguments)
 573                         throws DebugException {
 574                 return fDebugConnection.sendRequest(command, arguments);
 575         }
 576
 577         /**
 578          * Notification a breakpoint was encountered. Determine which breakpoint was
 579          * hit and fire a suspend event.
 580          *
 581          * @param event
 582          *            debug event
 583          */
 584         public void breakpointHit(Node node) {
 585                 // determine which breakpoint was hit, and set the thread's breakpoint
 586                 Node child = node.getFirstChild();
 587                 if (child.getNodeName().equals("stack")) {
 588                         int lineNumber = Integer.parseInt(PHPDebugUtils.getAttributeValue(
 589                                         child, "lineno"));
 590                         String filename = PHPDebugUtils
 591                                         .getAttributeValue(child, "filename").substring(8); // remove
 592                                                                                                                                                 // file:///
 593                         IBreakpoint[] breakpoints = XDebugCorePlugin.getBreakpoints();
 594                         for (int i = 0; i < breakpoints.length; i++) {
 595                                 IBreakpoint breakpoint = breakpoints[i];
 596                                 if (supportsBreakpoint(breakpoint)) {
 597                                         if (breakpoint instanceof ILineBreakpoint) {
 598                                                 ILineBreakpoint lineBreakpoint = (ILineBreakpoint) breakpoint;
 599                                                 try {
 600                                                         if (breakpoint.isEnabled()) {
 601                                                                 IMarker marker = breakpoint.getMarker();
 602                                                                 if (marker != null) {
 603
 604                                                                         String name = marker.getResource()
 605                                                                                         .getLocation().toOSString();
 606                                                                         if (name.equals(PHPDebugUtils
 607                                                                                         .unescapeString(filename))
 608                                                                                         && (lineBreakpoint.getLineNumber() == lineNumber)) {
 609                                                                                 fThread
 610                                                                                                 .setBreakpoints(new IBreakpoint[] { breakpoint });
 611                                                                                 break;
 612                                                                         }
 613                                                                 }
 614
 615                                                         }
 616                                                 } catch (CoreException e) {
 617                                                 }
 618                                         }
 619                                 }
 620                         }
 621                 }
 622                 suspended(DebugEvent.BREAKPOINT);
 623         }
 624
 625         public void handleDebugEvents(DebugEvent[] events) {
 626                 for (int i = 0; i < events.length; i++) {
 627                         DebugEvent event = events[i];
 628                         if ((event.getKind() == DebugEvent.CREATE)
 629                                         && (event.getSource() instanceof XDebugElement)) {
 630                                 if (((XDebugElement) event.getSource()).getModelIdentifier() == IXDebugConstants.ID_PHP_DEBUG_MODEL) {
 631                                         if (event.getKind() == DebugEvent.CREATE)
 632                                                 started();
 633                                 }
 634                         }
 635                 }
 636
 637         }
 638 }