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   1 /***********************************************************************************************************************************
   2  * Copyright (c) 2000, 2002 IBM Corp. and others. All rights reserved. This program and the accompanying materials are made
   3  * available under the terms of the Common Public License v1.0 which accompanies this distribution, and is available at
   4  * http://www.eclipse.org/legal/cpl-v10.html
   5  *
   6  * Contributors: IBM Corporation - Initial implementation Vicente Fernando - www.alfersoft.com.ar Christian Perkonig - remote debug
   7  **********************************************************************************************************************************/
   8 package net.sourceforge.phpdt.internal.debug.core;
   9
  10 import java.io.BufferedReader;
  11 import java.io.IOException;
  12 import java.io.InputStreamReader;
  13 import java.io.OutputStream;
  14 import java.net.ServerSocket;
  15 import java.net.Socket;
  16 import java.net.SocketTimeoutException;
  17 import java.util.Map;
  18 import java.util.Vector;
  19
  20 import net.sourceforge.phpdt.internal.debug.core.breakpoints.PHPLineBreakpoint;
  21 import net.sourceforge.phpdt.internal.debug.core.model.PHPDebugTarget;
  22 import net.sourceforge.phpdt.internal.debug.core.model.PHPStackFrame;
  23 import net.sourceforge.phpdt.internal.debug.core.model.PHPThread;
  24 import net.sourceforge.phpdt.internal.debug.core.model.PHPVariable;
  25 import net.sourceforge.phpeclipse.PHPeclipsePlugin;
  26
  27 import org.eclipse.core.runtime.CoreException;
  28 import org.eclipse.core.runtime.IPath;
  29 import org.eclipse.core.runtime.Path;
  30 import org.eclipse.debug.core.DebugException;
  31 import org.eclipse.debug.core.DebugPlugin;
  32 import org.eclipse.debug.core.model.IBreakpoint;
  33
  34 public class PHPDBGProxy {
  35
  36         private ServerSocket            server          = null;
  37         private BufferedReader          reader          = null;
  38         private PHPDBGInterface         DBGInt          = null;         // The DBG interface which is linked with the proxy
  39         private PHPDebugTarget          debugTarget = null;
  40         private PHPDBGProxy             thisProxy       = null;
  41         private PHPLoop                         phpLoop;
  42         private PHPThread                       PHPMainThread;
  43         private Socket                          socket;
  44         private int                             port;
  45         private boolean                         remote;
  46         private boolean                         pathtranslation;
  47         private Map                             pathmap;
  48         private IPath                           remoteSourcePath;
  49
  50         /**
  51          */
  52         public PHPDBGProxy () {
  53           thisProxy = this;
  54         }
  55
  56         /**
  57          * @param remote
  58          * @param remoteSourcePath
  59          * @param pathTranslate
  60          * @param paths
  61          */
  62         public PHPDBGProxy (boolean remote, String remoteSourcePath, boolean pathTranslate, Map paths) {
  63                 thisProxy             = this;
  64                 this.remote               = remote;
  65                 this.remoteSourcePath = new Path (remoteSourcePath);
  66                 this.pathmap          = paths;
  67                 this.pathtranslation  = pathTranslate;
  68         }
  69
  70         /**
  71          *
  72          */
  73         public void start () {
  74                 createServerSocket ();                                      // Create a server socket for communicatio with DBG
  75
  76                 this.startPHPLoop ();                                                                           //
  77         }
  78
  79         /**
  80          *
  81          */
  82         public void stop () {
  83                 phpLoop.setShouldStop ();                                   // Notify the thread's 'run loop' to stop
  84
  85                 if (DBGInt != null) {                                       // If we have a DBG interface linked with this proxy
  86                 DBGInt.setShouldStop ();                                //  Notify the DBG interface to stop the waiting for response
  87                 }
  88
  89                 if (!remote) {                                              // If it's not a remote proxy session
  90                 try {
  91                         getDebugTarget ().getProcess ().terminate ();       //
  92                 } catch (DebugException e) {
  93                         e.printStackTrace ();
  94                 }
  95                 }
  96
  97                 phpLoop.notifyWait ();
  98         }
  99
 100         public void setTerminated () {
 101                 try {
 102                         PHPMainThread.terminate ();
 103                 }
 104                 catch (DebugException e) {
 105                 }
 106         }
 107
 108         /**
 109          * TODO Is this method called from anywhere?
 110          *
 111          * Returns a already created server socket, or
 112          * creates a server socket if none exists, and
 113          * returns the newly created one.
 114          *
 115          * @return A server socket
 116          */
 117         protected ServerSocket getServerSocket () throws IOException {
 118                 if (server == null) {                                                                           // Do we have already a server socket
 119                 createServerSocket ();                                                                  //  No, then create one
 120                 }
 121
 122                 return server;                                                                                          // Return the server socket
 123         }
 124
 125         /**
 126          * Find a free unused port between 10001 and 10101 if the current debug session
 127          * is for remote debugging, and a unused port 7869 if it is used as non remote debugging.
 128          *
 129          * For remote debugging the used port is submitted with the URL.
 130          * E.g. http://localhost/index.php?DBGSESSID=1@localhost:10001
 131          * For non remote debugging (if PHPeclipse used e.g. php cli directly) no port
 132          * can be submitted by parameter, and only the default port (7869) can be used.
 133          *
 134          * @note: The free dbg version doesn't allow to set the appropriate port within php.ini!
 135          *
 136          *
 137          */
 138         protected void createServerSocket () {
 139                 if (this.remote) {
 140                         port = SocketUtil.findUnusedLocalPort ("localhost", 10001, 10101);      // Get the first free port in the range from 10001 to 10101
 141                 }
 142                 else {
 143                         port = SocketUtil.findUnusedLocalPort ("localhost", 7869, 7869);        // Get the first free port in the range from 7869 to 7869
 144                 }
 145
 146                 if (port == -1) {                                                   // Did we get a free port?
 147                 PHPDebugCorePlugin.log (5, "Cannot find free port!!!!");        //  No, output a error message
 148
 149                 return;                                                         //  And return
 150                 }
 151                 try {
 152                 if (server == null) {                                           // If there is no server socket yet
 153                         server = new ServerSocket (port);                           //  create a server socket for the free port
 154                         //System.out.println("ServerSocket on port: " + port);
 155                 }
 156                 } catch (IOException e) {
 157                 PHPDebugCorePlugin.log (e);
 158                 stop ();
 159                 }
 160         }
 161
 162         /**
 163          *
 164          */
 165         public Socket getSocket () throws IOException {
 166                 return socket;                                                          // Return the socket
 167         }
 168
 169         /**
 170          * Set the DBG interface which is linked to this proxy
 171          *
 172          * @paran DBGInt The DGB interface which is linked with this proxy
 173          */
 174         protected void setDBGInterface (PHPDBGInterface DBGInt) {
 175                 this.DBGInt = DBGInt;
 176         }
 177
 178         /**
 179          * Give back a buffered input stream for the socket which is
 180          * linked with this proxy
 181          */
 182         public BufferedReader getReader () throws IOException {
 183                 if (reader == null) {                                               // Do we already have a buffered input stream
 184                 reader = new BufferedReader (new InputStreamReader (this.getSocket ().getInputStream (),
 185                                                                         "ISO8859_1"));
 186                 }
 187
 188           return reader;                                                      // Return the buffered input stream
 189         }
 190
 191         /**
 192          *
 193          */
 194         public BufferedReader getReader (Socket socket) throws IOException {
 195                 if (socket != null) {                                                                                           // Is a socket provided
 196                 return new BufferedReader (new InputStreamReader (socket.getInputStream (),
 197                                                                                                   "ISO8859_1"));  // Then create a buffered input stream
 198                 }
 199                 else {
 200                 return null;                                                      // Without a socket we can't create a input stream
 201                 }
 202         }
 203
 204         /**
 205          *
 206          * @return The output stream for this proxy's socket
 207          */
 208         public OutputStream getOutputStream () throws IOException {
 209                 return this.getSocket ().getOutputStream ();
 210         }
 211
 212         /**
 213          *
 214          */
 215         protected void setBreakPoints () throws IOException, CoreException {
 216                 IBreakpoint[] breakpoints = DebugPlugin.getDefault ().getBreakpointManager ().getBreakpoints ();
 217
 218                 for (int i = 0; i < breakpoints.length; i++) {
 219                         if (breakpoints[i].isEnabled ()) {
 220                                 addBreakpoint (breakpoints[i]);
 221                         }
 222                 }
 223         }
 224
 225         /**
 226          *
 227          */
 228         private String MapPath (PHPLineBreakpoint phpLBP) {
 229                 IPath    filename;
 230                 IPath    remotePath;
 231                 IPath    newpath;
 232                 IPath    localPath;
 233                 String   local;
 234
 235                 if (remote) {
 236                         filename = phpLBP.getMarker().getResource().getProjectRelativePath();
 237                         filename = remoteSourcePath.append (filename);
 238                 } else {
 239                         filename = phpLBP.getMarker().getResource().getLocation();
 240                 }
 241
 242                 String path = filename.toOSString();
 243
 244                 if ((pathmap != null) && remote) {
 245                         java.util.Iterator i = pathmap.keySet().iterator();
 246
 247                         while (i.hasNext()) {
 248                                 String k = (String) i.next();
 249                                 if (path.startsWith(k)) {
 250                                         path = pathmap.get(k) + path.substring(k.length());
 251                                         break;
 252                                 }
 253                         }
 254                 }
 255
 256                 if (remoteSourcePath.isEmpty ()) {
 257                         if ((pathmap != null) && remote) {
 258                                 java.util.Iterator iterator = pathmap.keySet().iterator();
 259
 260                                 while (iterator.hasNext ()) {
 261                                         local      = (String) iterator.next ();                 // Get the local/client side path of the mapping
 262                                         remotePath = new Path ((String) pathmap.get (local));   // Get the remote/server side path of the mapping
 263                                         localPath  = new Path (local);                          // Get the remote/server side path of the mapping
 264
 265                                         if (localPath.isPrefixOf (filename)) {                  // Starts the remote/server side file path with the remote/server side mapping path
 266                                                                                                                                                         // dann prefix abhängen und den remote path davorhägen
 267                                                 newpath = filename.removeFirstSegments (localPath.matchingFirstSegments (filename));
 268                                                 newpath = remotePath.append (newpath);
 269                                                 path    = newpath.toString ();
 270
 271                                                 if (path.substring (0, 1).equals ("/")) {
 272                                                         path = path.replace ('\\', '/');
 273                                                 }
 274                                                 else {
 275                                                         path = path.replace ('/', '\\');
 276                                                 }
 277
 278                                                 return path;
 279                                         }
 280                                 }
 281                         }
 282                 }
 283                 else {
 284                         if (pathtranslation && remote) {
 285                                 if (remoteSourcePath.toString ().substring (0, 1).equals ("/")) {
 286                                         path = path.replace ('\\', '/');
 287                                 }
 288                                 else {
 289                                         path = path.replace ('/', '\\');
 290                                 }
 291                         }
 292                 }
 293
 294                 return path;
 295         }
 296
 297         /**
 298          *
 299          */
 300         public void addBreakpoint (IBreakpoint breakpoint) {
 301                 if (DBGInt == null) {
 302                 return;
 303                 }
 304
 305                 int bpNo = 0;
 306
 307                 try {
 308                 PHPLineBreakpoint phpLBP;
 309
 310                 if (breakpoint.getModelIdentifier() == PHPDebugCorePlugin.getUniqueIdentifier()) {
 311                         phpLBP = (PHPLineBreakpoint) breakpoint;
 312
 313                         //      bpNo= DBGInt.addBreakpoint(phpLBP.getMarker().getResource().getLocation().toOSString(), phpLBP.getLineNumber());
 314                         if (phpLBP.isConditionEnabled ()) {
 315                                 bpNo = DBGInt.addBreakpoint (MapPath(phpLBP),
 316                                                                                          phpLBP.getLineNumber(),
 317                                                                  phpLBP.getHitCount(),
 318                                                                  phpLBP.getCondition ());
 319                         }
 320                         else {
 321                                 bpNo = DBGInt.addBreakpoint (MapPath(phpLBP),
 322                                                                                          phpLBP.getLineNumber(),
 323                                                                  phpLBP.getHitCount(),
 324                                                                  "");
 325                         }
 326
 327                         phpLBP.setDBGBpNo(bpNo);
 328                 }
 329                 } catch (IOException e) {
 330                     PHPDebugCorePlugin.log(e);
 331                     stop();
 332                 } catch (CoreException e) {
 333                 PHPDebugCorePlugin.log(e);
 334                 stop();
 335                 }
 336         }
 337
 338         /**
 339          *
 340          */
 341         public void removeBreakpoint (IBreakpoint breakpoint) {
 342                 if (DBGInt == null) {
 343                 return;
 344                 }
 345
 346                 try {
 347                 PHPLineBreakpoint phpLBP;
 348
 349                 if (breakpoint.getModelIdentifier() == PHPDebugCorePlugin.getUniqueIdentifier ()) {
 350                         phpLBP = (PHPLineBreakpoint) breakpoint;
 351
 352                         //      bpNo= DBGInt.addBreakpoint(filename.toOSString(), phpLBP.getLineNumber());
 353
 354                         DBGInt.removeBreakpoint(MapPath(phpLBP), phpLBP.getLineNumber(), phpLBP.getDBGBpNo());
 355                 }
 356                 } catch (IOException e) {
 357                 PHPDebugCorePlugin.log (e);
 358                 stop ();
 359                 } catch (CoreException e) {
 360                 PHPDebugCorePlugin.log (e);
 361                 stop ();
 362                 }
 363         }
 364
 365         /**
 366          *
 367          */
 368         public void phpLoopNotify () {
 369                 phpLoop.notifyWait ();
 370         }
 371
 372         /**
 373          *
 374          */
 375         public void startPHPLoop () {
 376                 phpLoop = new PHPLoop ();                                                                       // Create a DBG communication loop object
 377
 378                 phpLoop.start ();                                                                                       // And start the communication loop
 379         }
 380
 381         /**
 382          *
 383          */
 384         public void resume () {
 385                 try {
 386                 DBGInt.continueExecution();
 387                 phpLoop.notifyWait();
 388                 } catch (IOException e) {
 389                 PHPeclipsePlugin.log("Debugging session ended.", e);
 390                 stop();
 391                 }
 392         }
 393
 394         /**
 395          *
 396          */
 397         public void pause () {
 398                 try {
 399                 if (null != DBGInt) {
 400                                 DBGInt.pauseExecution();
 401                         }
 402                 else {
 403                         // TODO Make sure the Suspend action is grayed out
 404                         // when DBGInt is null
 405                 }
 406                 } catch (IOException e) {
 407                 PHPDebugCorePlugin.log (e);
 408                 stop ();
 409                 }
 410         }
 411
 412         /**
 413          *
 414          */
 415         protected PHPDebugTarget getDebugTarget() {
 416                 return debugTarget;
 417         }
 418
 419         /**
 420          *
 421          * @param debugTarget
 422          */
 423         public void setDebugTarget (PHPDebugTarget debugTarget) {
 424                 this.debugTarget = debugTarget;
 425                 debugTarget.setPHPDBGProxy(this);
 426         }
 427
 428         /**
 429          * This method is called by a stackframe.
 430          * It reads the variables from PHP via DBG
 431          *
 432          * @param frame The stackframe which wants the variables.
 433          * @return      The list of variables for this stackframe.
 434          */
 435         public Vector readVariables (PHPStackFrame frame) {
 436                 try {
 437                 return DBGInt.getVariables (frame);                                             // Get the variables from DBG interface
 438                 } catch (IOException ioex) {
 439                 ioex.printStackTrace ();
 440                 throw new RuntimeException (ioex.getMessage ());
 441                 } catch (DebugException ex) {
 442                     ex.printStackTrace ();
 443                     throw new RuntimeException (ex.getMessage ());
 444                 }
 445         }
 446
 447         /**
 448          *
 449          * @param frame
 450          * @param evalString
 451          * @return
 452          */
 453         public PHPVariable[] eval (PHPStackFrame frame, String evalString) {
 454                 try {
 455                 return DBGInt.evalBlock (frame, evalString);
 456                 //return DBGInt.getVariables(frame);
 457                 } catch (IOException ioex) {
 458                 ioex.printStackTrace();
 459                 throw new RuntimeException(ioex.getMessage());
 460                 } catch (DebugException ex) {
 461                 ex.printStackTrace();
 462                 throw new RuntimeException(ex.getMessage());
 463                 }
 464         }
 465
 466         public void readStepOverEnd (PHPStackFrame stackFrame) {
 467                 try {
 468                 DBGInt.stepOver();
 469                 phpLoop.notifyWait();
 470                 } catch (Exception e) {
 471                 PHPDebugCorePlugin.log(e);
 472                 }
 473         }
 474
 475         public void readStepReturnEnd (PHPStackFrame stackFrame) {
 476                 try {
 477                 DBGInt.stepOut();
 478                     phpLoop.notifyWait();
 479                 } catch (Exception e) {
 480                 PHPDebugCorePlugin.log(e);
 481                 }
 482         }
 483
 484         public void readStepIntoEnd (PHPStackFrame stackFrame) {
 485                 try {
 486                 DBGInt.stepInto();
 487                 phpLoop.notifyWait();
 488                 } catch (Exception e) {
 489                 PHPDebugCorePlugin.log(e);
 490                 }
 491         }
 492
 493         /*
 494          * public PHPStackFrame[] readFrames(PHPThread thread) { //try { //this.println("th " + thread.getId() + " ; f "); //return new
 495          * FramesReader(getMultiReaderStrategy()).readFrames(thread); return null; //} catch (IOException e) { //
 496          * PHPDebugCorePlugin.log(e); // return null; //}
 497          *  }
 498          */
 499
 500         public void closeSocket() throws IOException {
 501                 if (socket != null) {
 502                 socket.close();
 503                 }
 504         }
 505
 506         public void closeServerSocket() throws IOException {
 507                 if (server != null) {
 508                 server.close();
 509                 }
 510         }
 511
 512         public int getPort() {
 513                 return port;
 514         }
 515
 516         /**
 517          *
 518          *
 519          */
 520         class PHPLoop extends Thread {
 521                 private boolean shouldStop;
 522
 523                 public PHPLoop () {
 524                 shouldStop = false;
 525                 this.setName ("PHPDebuggerLoop");
 526                 }
 527
 528                 /**
 529                  *
 530                  */
 531                 public synchronized void setShouldStop () {
 532                         shouldStop = true;                                                                                      // The run loop should stop
 533
 534                         try {
 535                                 // If the loop thread is blocked on the server socket,
 536                                 // forcibly unblock it to avoid leaking the thread,
 537                                 // the socket and the port
 538                                 closeServerSocket ();
 539                         } catch (IOException x) {
 540                                 // Log this as a warning?
 541                                 PHPDebugCorePlugin.log (x);
 542                         }
 543                 }
 544
 545                 /**
 546                  *
 547                  */
 548                 public synchronized void notifyWait () {
 549                 notify ();
 550                 }
 551
 552                 /**
 553                  *
 554                  *
 555                  */
 556                 public void run () {
 557                 try {
 558                         int                     i;
 559                                 int                     timeout;
 560                         long                    interval        = 200;                                  // Wait 200 ms maximum for a DBG response
 561                         boolean                 newconnect      = false;                                //
 562                         Socket                  newSocket       = null;
 563                         PHPStackFrame[] StackList;
 564                         PHPDBGInterface newDBGInt;
 565
 566                         //                              synchronized (this) {
 567                         //                                      wait();
 568                         //                              }
 569
 570                         PHPMainThread = new PHPThread (getDebugTarget (), getPort ());
 571                         PHPMainThread.setName ("Thread [main]");
 572                         timeout       = 0;
 573
 574                         //                              while ((getDebugTarget() == null) && (timeout < 100)) {
 575                         //                                      sleep(100);
 576                         //                                      timeout++;
 577                         //                              }
 578                         // Be sure debug target is set
 579                         //                              PHPMainThread.setDebugTarget(getDebugTarget());
 580
 581                                 getDebugTarget ().addThread (PHPMainThread);
 582
 583                         //System.out.println("Waiting for breakpoints.");
 584
 585                         while (!shouldStop) {                                                           // As long as nobody will stop us
 586                                 newconnect = true;                              // The first time
 587
 588                                 try {
 589                                         newSocket = server.accept();                            // Waits until DBG want to connect
 590                                         //System.out.println("Accepted! : " + socket.toString());
 591                                 } catch (SocketTimeoutException e) {
 592                                         newconnect = false;                                                     // No one wants to connect (connection already done)
 593                                 } catch (IOException e) {
 594                                         PHPDebugCorePlugin.log(e);
 595                                         return;
 596                                 }
 597
 598                                 if (newconnect) {                                                               // Is it just after a new connection
 599                                         if (DBGInt == null) {                                           // Do we have a DBG interface?
 600                                         server.setSoTimeout(1);                                 // ???
 601                                                 }
 602
 603                                         newDBGInt = new PHPDBGInterface (getReader (newSocket),                 // Create a new interface
 604                                                                                                                  newSocket.getOutputStream (),
 605                                                                                                                  thisProxy);
 606                                         newDBGInt.waitResponse (1000);                          // Wait for the initial DBG response
 607                                         newDBGInt.flushAllPackets ();               // Read and process the DBG response
 608
 609                                         // Check version and session ID
 610                                         if ((DBGInt == null) ||                                 // If we have no interface
 611                                                 (DBGInt.getSID () == newDBGInt.getSID ())) {// or the new session ID is different to the old one
 612                                         DBGInt = newDBGInt;                                                     // Set the new interface as current one
 613
 614                                         try {
 615                                                 closeSocket ();
 616                                         }
 617                                                         catch (IOException e) {
 618                                                 PHPDebugCorePlugin.log (e);
 619                                                 shouldStop = true;
 620                                         }
 621
 622                                         socket = newSocket;
 623                                         setBreakPoints ();
 624                                         DBGInt.continueExecution ();                    // Notify DBG that PHP should continue
 625                                         }
 626                                                 else {
 627                                         newDBGInt.continueExecution ();                         // Notify DBG that PHP should continue
 628                                         newSocket.close ();
 629                                         }
 630                                 }
 631
 632                                 if (DBGInt.waitResponse (interval)) {                                           // Wait for a DBG response (200 ms)
 633                                         DBGInt.flushAllPackets ();                                                              // If we got something, read and process it
 634
 635                                         if (DBGInt.BPUnderHit != 0) {                                                   // ???
 636                                         StackList = DBGInt.getStackList ();                 // Get the stack list from DBGInterface
 637
 638                                             if (StackList.length > 0) {                         // If there is something in stack list
 639                                                 for (i = 0; i < StackList.length; i++) {        // For all stack list
 640                                                         StackList[i].setThread (PHPMainThread);     // Set the PHPTread for all PHPStackFrames
 641
 642                                                         if (DBGInt.getModByNo (StackList[i].getModNo ()).equals ("")) {
 643                                                                 DBGInt.getSourceTree ();
 644                                                         }
 645
 646                                                         StackList[i].setFile (DBGInt.getModByNo (StackList[i].getModNo ()));
 647                                                 }
 648
 649                                                 PHPMainThread.setStackFrames (StackList);
 650                                         }
 651
 652                                         PHPMainThread.suspend ();                             // Fire debug event
 653
 654                                             synchronized (this) {
 655                                                 wait ();
 656                                         }
 657                                         }
 658                                 }
 659
 660                                 if (remote) {
 661                                         if (PHPMainThread.isTerminated ()) {
 662                                         shouldStop = true;
 663
 664                                             break;                                                // Go for terminating the thread
 665                                         }
 666                                 } else {
 667                                         if (PHPMainThread.isTerminated () ||
 668                                                 getDebugTarget ().getProcess ().isTerminated ()) {
 669                                         shouldStop = true;
 670
 671                                         break;                                                // Go for terminating the thread
 672                                         }
 673                                 }
 674                         }
 675                 } catch (Exception ex) {
 676                         PHPDebugCorePlugin.log (ex);
 677                         System.out.println (ex);
 678                 } finally {
 679                         try {
 680                                 getDebugTarget ().terminate ();
 681                                 closeSocket();
 682                                 closeServerSocket ();
 683                         } catch (IOException e) {
 684                                 PHPDebugCorePlugin.log (e);
 685
 686                                 return;
 687                         }
 688
 689                         //System.out.println("Socket loop finished.");
 690                 }
 691                 }
 692         }
 693 }