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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          * Get the DBG interface which is linked to this proxy
 180          *
 181          * @paran DBGInt The DGB interface which is linked with this proxy
 182          */
 183         public PHPDBGInterface getDBGInterface () {
 184                 return DBGInt;
 185         }
 186
 187         /**
 188          * Give back a buffered input stream for the socket which is
 189          * linked with this proxy
 190          */
 191         public BufferedReader getReader () throws IOException {
 192                 if (reader == null) {                                               // Do we already have a buffered input stream
 193                 reader = new BufferedReader (new InputStreamReader (this.getSocket ().getInputStream (),
 194                                                                         "ISO8859_1"));
 195                 }
 196
 197           return reader;                                                      // Return the buffered input stream
 198         }
 199
 200         /**
 201          *
 202          */
 203         public BufferedReader getReader (Socket socket) throws IOException {
 204                 if (socket != null) {                                                                                           // Is a socket provided
 205                 return new BufferedReader (new InputStreamReader (socket.getInputStream (),
 206                                                                                                   "ISO8859_1"));  // Then create a buffered input stream
 207                 }
 208                 else {
 209                 return null;                                                      // Without a socket we can't create a input stream
 210                 }
 211         }
 212
 213         /**
 214          *
 215          * @return The output stream for this proxy's socket
 216          */
 217         public OutputStream getOutputStream () throws IOException {
 218                 return this.getSocket ().getOutputStream ();
 219         }
 220
 221         /**
 222          *
 223          */
 224         protected void setBreakPoints () throws IOException, CoreException {
 225                 IBreakpoint[] breakpoints = DebugPlugin.getDefault ().getBreakpointManager ().getBreakpoints ();
 226
 227                 for (int i = 0; i < breakpoints.length; i++) {
 228                         if (breakpoints[i].isEnabled ()) {
 229                                 addBreakpoint (breakpoints[i]);
 230                         }
 231                 }
 232         }
 233
 234         /**
 235          *
 236          */
 237         private String MapPath (PHPLineBreakpoint phpLBP) {
 238                 IPath    filename;
 239                 IPath    remotePath;
 240                 IPath    newpath;
 241                 IPath    localPath;
 242                 String   local;
 243
 244                 if (remote) {
 245                         filename = phpLBP.getMarker().getResource().getProjectRelativePath();
 246                         filename = remoteSourcePath.append (filename);
 247                 } else {
 248                         filename = phpLBP.getMarker().getResource().getFullPath();
 249                 }
 250
 251                 String path = filename.toOSString();
 252
 253                 if ((pathmap != null) && remote) {
 254                         java.util.Iterator i = pathmap.keySet().iterator();
 255
 256                         while (i.hasNext()) {
 257                                 String k = (String) i.next();
 258                                 if (path.startsWith(k)) {
 259                                         path = pathmap.get(k) + path.substring(k.length());
 260                                         break;
 261                                 }
 262                         }
 263                 }
 264
 265                 if (remoteSourcePath.isEmpty ()) {
 266                         if ((pathmap != null) && remote) {
 267                                 java.util.Iterator iterator = pathmap.keySet().iterator();
 268
 269                                 while (iterator.hasNext ()) {
 270                                         local      = (String) iterator.next ();                 // Get the local/client side path of the mapping
 271                                         remotePath = new Path ((String) pathmap.get (local));   // Get the remote/server side path of the mapping
 272                                         localPath  = new Path (local);                          // Get the remote/server side path of the mapping
 273
 274                                         if (localPath.isPrefixOf (filename)) {                  // Starts the remote/server side file path with the remote/server side mapping path
 275                                                                                                                                                         // dann prefix abh�ngen und den remote path davorh�gen
 276                                                 newpath = filename.removeFirstSegments (localPath.matchingFirstSegments (filename));
 277                                                 newpath = remotePath.append (newpath);
 278                                                 path    = newpath.toString ();
 279
 280                                                 if (path.substring (0, 1).equals ("/")) {
 281                                                         path = path.replace ('\\', '/');
 282                                                 }
 283                                                 else {
 284                                                         path = path.replace ('/', '\\');
 285                                                 }
 286
 287                                                 return path;
 288                                         }
 289                                 }
 290                         }
 291                 }
 292                 else {
 293                         if (pathtranslation && remote) {
 294                                 if (remoteSourcePath.toString ().substring (0, 1).equals ("/")) {
 295                                         path = path.replace ('\\', '/');
 296                                 }
 297                                 else {
 298                                         path = path.replace ('/', '\\');
 299                                 }
 300                         }
 301                 }
 302
 303                 return path;
 304         }
 305
 306         /**
 307          *
 308          */
 309         public void addBreakpoint (IBreakpoint breakpoint) {
 310                 if (DBGInt == null) {
 311                 return;
 312                 }
 313
 314                 int bpNo = 0;
 315
 316                 try {
 317                 PHPLineBreakpoint phpLBP;
 318
 319                 if (breakpoint.getModelIdentifier() == PHPDebugCorePlugin.getUniqueIdentifier()) {
 320                         phpLBP = (PHPLineBreakpoint) breakpoint;
 321
 322                         //      bpNo= DBGInt.addBreakpoint(phpLBP.getMarker().getResource().getLocation().toOSString(), phpLBP.getLineNumber());
 323                         if (phpLBP.isConditionEnabled ()) {
 324                                 bpNo = DBGInt.addBreakpoint (MapPath(phpLBP),
 325                                                                                          phpLBP.getLineNumber(),
 326                                                                  phpLBP.getHitCount(),
 327                                                                  phpLBP.getCondition ());
 328                         }
 329                         else {
 330                                 bpNo = DBGInt.addBreakpoint (MapPath(phpLBP),
 331                                                                                          phpLBP.getLineNumber(),
 332                                                                  phpLBP.getHitCount(),
 333                                                                  "");
 334                         }
 335
 336                         phpLBP.setDBGBpNo(bpNo);
 337                 }
 338                 } catch (IOException e) {
 339                     PHPDebugCorePlugin.log(e);
 340                     stop();
 341                 } catch (CoreException e) {
 342                 PHPDebugCorePlugin.log(e);
 343                 stop();
 344                 }
 345         }
 346
 347         /**
 348          *
 349          */
 350         public void removeBreakpoint (IBreakpoint breakpoint) {
 351                 if (DBGInt == null) {
 352                 return;
 353                 }
 354
 355                 try {
 356                 PHPLineBreakpoint phpLBP;
 357
 358                 if (breakpoint.getModelIdentifier() == PHPDebugCorePlugin.getUniqueIdentifier ()) {
 359                         phpLBP = (PHPLineBreakpoint) breakpoint;
 360
 361                         //      bpNo= DBGInt.addBreakpoint(filename.toOSString(), phpLBP.getLineNumber());
 362
 363                         DBGInt.removeBreakpoint(MapPath(phpLBP), phpLBP.getLineNumber(), phpLBP.getDBGBpNo());
 364                 }
 365                 } catch (IOException e) {
 366                 PHPDebugCorePlugin.log (e);
 367                 stop ();
 368                 } catch (CoreException e) {
 369                 PHPDebugCorePlugin.log (e);
 370                 stop ();
 371                 }
 372         }
 373
 374         /**
 375          *
 376          */
 377         public void phpLoopNotify () {
 378                 phpLoop.notifyWait ();
 379         }
 380
 381         /**
 382          *
 383          */
 384         public void startPHPLoop () {
 385                 phpLoop = new PHPLoop ();                                                                       // Create a DBG communication loop object
 386
 387                 phpLoop.start ();                                                                                       // And start the communication loop
 388         }
 389
 390         /**
 391          *
 392          */
 393         public void resume () {
 394                 try {
 395                 DBGInt.continueExecution();
 396                 phpLoop.notifyWait();
 397                 } catch (IOException e) {
 398                 PHPeclipsePlugin.log("Debugging session ended.", e);
 399                 stop();
 400                 }
 401         }
 402
 403         /**
 404          *
 405          */
 406         public void pause () {
 407                 try {
 408                 if (null != DBGInt) {
 409                                 DBGInt.pauseExecution();
 410                         }
 411                 else {
 412                         // TODO Make sure the Suspend action is grayed out
 413                         // when DBGInt is null
 414                 }
 415                 } catch (IOException e) {
 416                 PHPDebugCorePlugin.log (e);
 417                 stop ();
 418                 }
 419         }
 420
 421         /**
 422          *
 423          */
 424         protected PHPDebugTarget getDebugTarget() {
 425                 return debugTarget;
 426         }
 427
 428         /**
 429          * Is called by the DebuggerRunner
 430          *
 431          * @param debugTarget
 432          */
 433         public void setDebugTarget (PHPDebugTarget debugTarget) {
 434                 this.debugTarget = debugTarget;
 435                 debugTarget.setPHPDBGProxy(this);
 436         }
 437
 438         /**
 439          * This method is called by a stackframe.
 440          * It reads the variables from PHP via DBG
 441          *
 442          * @param frame The stackframe which wants the variables.
 443          * @return      The list of variables for this stackframe.
 444          */
 445         public Vector readVariables (PHPStackFrame frame) {
 446                 try {
 447                 return DBGInt.getVariables (frame);                                             // Get the variables from DBG interface
 448                 } catch (IOException ioex) {
 449                 ioex.printStackTrace ();
 450                 throw new RuntimeException (ioex.getMessage ());
 451                 } catch (DebugException ex) {
 452                     ex.printStackTrace ();
 453                     throw new RuntimeException (ex.getMessage ());
 454                 }
 455         }
 456
 457         /**
 458          *
 459          * @param frame
 460          * @param evalString
 461          * @return
 462          */
 463         public PHPVariable[] eval (PHPStackFrame frame, String evalString) {
 464                 try {
 465                 return DBGInt.evalBlock (frame, evalString);
 466                 //return DBGInt.getVariables(frame);
 467                 } catch (IOException ioex) {
 468                 ioex.printStackTrace();
 469                 throw new RuntimeException(ioex.getMessage());
 470                 } catch (DebugException ex) {
 471                 ex.printStackTrace();
 472                 throw new RuntimeException(ex.getMessage());
 473                 }
 474         }
 475
 476         public void readStepOverEnd (PHPStackFrame stackFrame) {
 477                 try {
 478                 DBGInt.stepOver();
 479                 phpLoop.notifyWait();
 480                 } catch (Exception e) {
 481                 PHPDebugCorePlugin.log(e);
 482                 }
 483         }
 484
 485         public void readStepReturnEnd (PHPStackFrame stackFrame) {
 486                 try {
 487                 DBGInt.stepOut();
 488                     phpLoop.notifyWait();
 489                 } catch (Exception e) {
 490                 PHPDebugCorePlugin.log(e);
 491                 }
 492         }
 493
 494         public void readStepIntoEnd (PHPStackFrame stackFrame) {
 495                 try {
 496                 DBGInt.stepInto();
 497                 phpLoop.notifyWait();
 498                 } catch (Exception e) {
 499                 PHPDebugCorePlugin.log(e);
 500                 }
 501         }
 502
 503         /*
 504          * public PHPStackFrame[] readFrames(PHPThread thread) { //try { //this.println("th " + thread.getId() + " ; f "); //return new
 505          * FramesReader(getMultiReaderStrategy()).readFrames(thread); return null; //} catch (IOException e) { //
 506          * PHPDebugCorePlugin.log(e); // return null; //}
 507          *  }
 508          */
 509
 510         public void closeSocket() throws IOException {
 511                 if (socket != null) {
 512                 socket.close();
 513                 }
 514         }
 515
 516         public void closeServerSocket() throws IOException {
 517                 if (server != null) {
 518                 server.close();
 519                 }
 520         }
 521
 522         public int getPort() {
 523                 return port;
 524         }
 525
 526         /**
 527          *
 528          *
 529          */
 530         class PHPLoop extends Thread {
 531                 private boolean shouldStop;
 532
 533                 public PHPLoop () {
 534                 shouldStop = false;
 535                 this.setName ("PHPDebuggerLoop");
 536                 }
 537
 538                 /**
 539                  *
 540                  */
 541                 public synchronized void setShouldStop () {
 542                         shouldStop = true;                                                                                      // The run loop should stop
 543
 544                         try {
 545                                 // If the loop thread is blocked on the server socket,
 546                                 // forcibly unblock it to avoid leaking the thread,
 547                                 // the socket and the port
 548                                 closeServerSocket ();
 549                         } catch (IOException x) {
 550                                 // Log this as a warning?
 551                                 PHPDebugCorePlugin.log (x);
 552                         }
 553                 }
 554
 555                 /**
 556                  *
 557                  */
 558                 public synchronized void notifyWait () {
 559                 notify ();
 560                 }
 561
 562                 /**
 563                  *
 564                  *
 565                  */
 566                 public void run () {
 567                 try {
 568                         int                     i;
 569                                 int                     timeout;
 570                         long                    interval        = 200;                                  // Wait 200 ms maximum for a DBG response
 571                         boolean                 newconnect      = false;                                //
 572                         Socket                  newSocket       = null;
 573                         PHPStackFrame[] StackList;
 574                         PHPDBGInterface newDBGInt;
 575
 576                         //                              synchronized (this) {
 577                         //                                      wait();
 578                         //                              }
 579
 580                         PHPMainThread = new PHPThread (getDebugTarget (), getPort ());
 581                         PHPMainThread.setName ("Thread [main]");
 582                         timeout       = 0;
 583
 584                         //                              while ((getDebugTarget() == null) && (timeout < 100)) {
 585                         //                                      sleep(100);
 586                         //                                      timeout++;
 587                         //                              }
 588                         // Be sure debug target is set
 589                         //                              PHPMainThread.setDebugTarget(getDebugTarget());
 590
 591                                 getDebugTarget ().addThread (PHPMainThread);
 592
 593                         //System.out.println("Waiting for breakpoints.");
 594
 595                         while (!shouldStop) {                                                           // As long as nobody will stop us
 596                                 newconnect = true;                              // The first time
 597
 598                                 try {
 599                                         newSocket = server.accept();                            // Waits until DBG want to connect
 600                                         //System.out.println("Accepted! : " + socket.toString());
 601                                 } catch (SocketTimeoutException e) {
 602                                         newconnect = false;                                                     // No one wants to connect (connection already done)
 603                                 } catch (IOException e) {
 604                                         PHPDebugCorePlugin.log(e);
 605                                         return;
 606                                 }
 607
 608                                 if (newconnect) {                                                               // Is it just after a new connection
 609                                         if (DBGInt == null) {                                           // Do we have a DBG interface?
 610                                         server.setSoTimeout(1);                                 // ???
 611                                                 }
 612
 613                                         newDBGInt = new PHPDBGInterface (getReader (newSocket),                 // Create a new interface
 614                                                                                                                  newSocket.getOutputStream (),
 615                                                                                                                  thisProxy);
 616                                         newDBGInt.waitResponse (1000);                          // Wait for the initial DBG response
 617                                         newDBGInt.flushAllPackets ();               // Read and process the DBG response
 618
 619                                         // Check version and session ID
 620                                         if ((DBGInt == null) ||                                 // If we have no interface
 621                                                 (DBGInt.getSID () == newDBGInt.getSID ())) {// or the new session ID is different to the old one
 622                                         DBGInt = newDBGInt;                                                     // Set the new interface as current one
 623
 624                                         try {
 625                                                 closeSocket ();
 626                                         }
 627                                                         catch (IOException e) {
 628                                                 PHPDebugCorePlugin.log (e);
 629                                                 shouldStop = true;
 630                                         }
 631
 632                                         socket = newSocket;
 633                                         setBreakPoints ();
 634                                         DBGInt.continueExecution ();                    // Notify DBG that PHP should continue
 635                                         }
 636                                                 else {
 637                                         newDBGInt.continueExecution ();                         // Notify DBG that PHP should continue
 638                                         newSocket.close ();
 639                                         }
 640                                 }
 641
 642                                 if (DBGInt.waitResponse (interval)) {                                           // Wait for a DBG response (200 ms)
 643                                         DBGInt.flushAllPackets ();                                                              // If we got something, read and process it
 644
 645                                         if (DBGInt.BPUnderHit != 0) {                                                   // ???
 646                                         StackList = DBGInt.getStackList ();                 // Get the stack list from DBGInterface
 647
 648                                             if (StackList.length > 0) {                         // If there is something in stack list
 649                                                 for (i = 0; i < StackList.length; i++) {        // For all stack list
 650                                                         StackList[i].setThread (PHPMainThread);     // Set the PHPTread for all PHPStackFrames
 651
 652                                                         if (DBGInt.getModByNo (StackList[i].getModNo ()).equals ("")) {
 653                                                                 DBGInt.getSourceTree ();
 654                                                         }
 655
 656                                                         StackList[i].setFile (DBGInt.getModByNo (StackList[i].getModNo ()));
 657                                                 }
 658
 659                                                 PHPMainThread.setStackFrames (StackList);
 660                                         }
 661
 662                                         PHPMainThread.suspend ();                             // Fire debug event
 663
 664                                             synchronized (this) {
 665                                                 wait ();
 666                                         }
 667                                         }
 668                                 }
 669
 670                                 if (remote) {
 671                                         if (PHPMainThread.isTerminated ()) {
 672                                         shouldStop = true;
 673
 674                                             break;                                                // Go for terminating the thread
 675                                         }
 676                                 } else {
 677                                         if (PHPMainThread.isTerminated () ||
 678                                                 getDebugTarget ().getProcess ().isTerminated ()) {
 679                                         shouldStop = true;
 680
 681                                         break;                                                // Go for terminating the thread
 682                                         }
 683                                 }
 684                         }
 685                 } catch (Exception ex) {
 686                         PHPDebugCorePlugin.log (ex);
 687                         System.out.println (ex);
 688                 } finally {
 689                         try {
 690                                 getDebugTarget ().terminate ();
 691                                 closeSocket();
 692                                 closeServerSocket ();
 693                         } catch (IOException e) {
 694                                 PHPDebugCorePlugin.log (e);
 695
 696                                 return;
 697                         }
 698
 699                         //System.out.println("Socket loop finished.");
 700                 }
 701                 }
 702         }
 703 }