net.sourceforge.phpeclipse.debug.core/src/net/sourceforge/phpdt/internal/debug/core/PHPDBGInterface.java

   1 /**********************************************************************
   2 Copyright (c) 2000, 2002 IBM Corp. and others.
   3 All rights reserved. This program and the accompanying materials
   4 are made available under the terms of the Common Public License v1.0
   5 which accompanies this distribution, and is available at
   6 http://www.eclipse.org/legal/cpl-v10.html
   7
   8 Contributors:
   9         Vicente Fernando - www.alfersoft.com.ar - Initial implementation
  10         Christian Perkonig - remote debug
  11 **********************************************************************/
  12 package net.sourceforge.phpdt.internal.debug.core;
  13
  14 import java.io.BufferedReader;
  15 import java.io.IOException;
  16 import java.io.OutputStream;
  17 import java.util.Vector;
  18 import java.util.Collections;
  19
  20 import net.sourceforge.phpdt.internal.debug.core.model.PHPDBGEvalString;
  21 import net.sourceforge.phpdt.internal.debug.core.model.PHPStackFrame;
  22 import net.sourceforge.phpdt.internal.debug.core.model.PHPVariable;
  23 import net.sourceforge.phpdt.internal.debug.core.model.PHPValue;
  24
  25 import org.eclipse.core.runtime.IStatus;
  26 import org.eclipse.core.runtime.Status;
  27 import org.eclipse.debug.core.DebugException;
  28
  29 /**
  30  * The interface object are created by the proxy
  31  *
  32  */
  33 public class PHPDBGInterface {
  34
  35         public boolean                  sessionEnded = false;
  36         public int                              sessType         = -1;
  37         public int                              BPUnderHit       = 0;
  38         public String                   sessID           = new String ();
  39
  40         private int[]                   LastBPRead   = new int[10];
  41         private Vector                  DBGBPList    = new Vector ();
  42         private Vector          DBGVarList   = new Vector ();
  43         private PHPStackFrame[] DBGStackList;
  44         private Vector                  DBGMods          = new Vector ();                       // The module names and their numbers
  45         private Vector          stackListOld = new Vector ();
  46         private BufferedReader  in;
  47         private OutputStream    os;                                                                             // The stream which goes to DBG
  48         private boolean                 shouldStop       = false;
  49         private String                  evalRet          = new String ("");
  50         private String                  serGlobals       = new String ("");
  51         private int                     rawCounter       = 1000;                                        // An rawData frame ID counter
  52         private PHPDBGProxy     proxy            = null;
  53         private int                     lastCmd          = -1;
  54         private int                     sid                      = 0;
  55         private boolean                 stopOnError      = false;
  56         private char[]                  lastCommand      = new char[4];
  57
  58         /**
  59          * @param in    The input stream (communication from DBG).
  60          * @param os    The output stream (communication to DBG).
  61          * @param proxy The proxy to which this interface belongs.
  62          */
  63         public PHPDBGInterface (BufferedReader in, OutputStream os, PHPDBGProxy proxy) {
  64                 DBGBPList.clear ();
  65
  66                 this.in         = in;
  67                 this.os         = os;
  68                 this.proxy      = proxy;
  69         }
  70
  71         /**
  72          *
  73          * @param mod_name The module (source file) to which we add the breakpoint.
  74          * @param line     The line where the breakpoint is set.
  75          * @return         Breakpoint ID ???.
  76          */
  77         public int addBreakpoint (String mod_name, int line) throws IOException {
  78                 return setBreakpoint (mod_name, "", line, PHPDBGBase.BPS_ENABLED + PHPDBGBase.BPS_UNRESOLVED, 0, 0, 0, 0, 0);
  79         }
  80
  81         /**
  82          *
  83          * @param mod_name The module (source file) to which we add the breakpoint.
  84          * @param line     The line where the breakpoint is set.
  85          * @param bpNo     The breakpoint ID ???.
  86          */
  87         public void removeBreakpoint (String mod_name, int line, int bpNo) throws IOException {
  88                 setBreakpoint (mod_name, "", line, PHPDBGBase.BPS_DISABLED, 0, 0, 0, bpNo, 0);
  89         }
  90
  91         /**
  92          * Is this method used anywhere?
  93          *
  94          */
  95         public void requestDBGVersion () throws IOException {
  96                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
  97                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
  98
  99                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 100                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_VER);         // We want the version of DBG
 101
 102                 DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 103
 104                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 105                         return;                                                 //  No
 106                 }
 107
 108                 DBGPacket.sendPacket (os);                                                                      // Send the request to DBG
 109         }
 110
 111         /**
 112          * Called by the proxy
 113          *
 114          */
 115         public void getSourceTree () throws IOException {
 116                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 117                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 118
 119                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 120                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_SRC_TREE);        // We want a source tree from DBG
 121
 122                 DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 123
 124                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 125                         return;                                                                                                 //  No
 126                 }
 127
 128                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 129
 130                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 131                 flushAllPackets ();                                                                             // Read and process the response from DBG
 132         }
 133
 134         /**
 135          * Is this method called from anywhere?
 136          *
 137          * @param modName The modul (filename).
 138          */
 139         public void addDBGModName (String modName) throws IOException {
 140                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 141                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 142
 143                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 144                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);     // We want Module name from DBG
 145
 146                 rawCounter++;                                               // Increment the rawData ID counter
 147                 DBGFrame.addInt (rawCounter);                                                           // FRAME_RAWDATA ID
 148                 DBGFrame.addInt (modName.length () + 1);                                        // The length of rawdata string (incl. null char termination)
 149                 DBGFrame.addString (modName);                                                           // The file name (module name)
 150                 DBGFrame.addChar ('\0');                                                                        // Add the C-String null termination
 151
 152                 DBGPacket.addFrame (DBGFrame);
 153
 154                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 155                         return;                                                                                                 //  No
 156                 }
 157
 158                 DBGPacket.sendPacket (os);
 159         }
 160
 161         /**
 162          * This method is called for adding or removing breakpoints.
 163          *
 164          * @param mod_name      The module name (file name).
 165          * @param condition     Info about the condition when to break (not used at the moment).
 166          * @param line          The breakpoints line.
 167          * @param state         Info whether this breakpoint has to be dis- or enabled.
 168          * @param istep         Always 0.
 169          * @param hitcount      Always 0.
 170          * @param skiphits      Always 0.
 171          * @param bpno          The breakpoint ID.
 172          * @param isunderhit    ???
 173          * @return
 174          */
 175         private int setBreakpoint (String mod_name, String condition, int line, int state, int istemp, int hitcount, int skiphits, int bpno, int isunderhit) throws IOException {
 176                 PHPDBGPacket    DBGPacket;
 177                 PHPDBGFrame     DBGFrame1;
 178                 PHPDBGFrame     DBGFrame2;
 179                 int                     modNo;
 180
 181                 DBGPacket       = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);
 182                 DBGFrame1       = new PHPDBGFrame (PHPDBGBase.FRAME_BPS);
 183                 DBGFrame2       = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);
 184
 185                 modNo           = getModByName (mod_name);                                              // Get the module ID by name
 186
 187                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 188                         DBGFrame1.addInt (modNo);                                                               // Add the module ID to frame 1
 189                 } else {
 190                         DBGFrame1.addInt (0);                                                                   // mod number (0 use file name)
 191                 }
 192
 193                 DBGFrame1.addInt (line);                                                                        // line number
 194
 195                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 196                         DBGFrame1.addInt (0);                                                                   // use mod number
 197                 } else {
 198                         rawCounter++;
 199                         DBGFrame1.addInt (rawCounter);                                                  // ID of FRAME_RAWDATA to send file name
 200                 }
 201
 202                 DBGFrame1.addInt (state);                                       // state BPS_*
 203                 DBGFrame1.addInt (istemp);                                      // istep
 204                 DBGFrame1.addInt (hitcount);                                // hit count
 205                 DBGFrame1.addInt (skiphits);                                // skip hits
 206                 DBGFrame1.addInt (0);                                           // ID of condition
 207                 DBGFrame1.addInt (bpno);                                            // breakpoint number
 208                 DBGFrame1.addInt (isunderhit);                                  // is under hit
 209
 210                 if (modNo < 0) {                                            // Did we find a module ID for the module name?
 211                         DBGFrame2.addInt (rawCounter);                                      // FRAME_RAWDATA ID
 212                         DBGFrame2.addInt (mod_name.length() + 1);                   // length of rawdata (+ null char)
 213                         DBGFrame2.addString (mod_name);                                     // file name
 214                         DBGFrame2.addChar ('\0');                                                   // null char
 215
 216                         DBGPacket.addFrame (DBGFrame2);                         // First add file name data
 217                 }
 218
 219                 DBGPacket.addFrame (DBGFrame1);                                                         // Second add command data
 220
 221                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 222                         return 0;                                               //  No
 223                 }
 224
 225                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 226
 227                 clearLastBP ();
 228
 229                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 230                 flushAllPackets ();                                         // Read and process the response from DBG
 231
 232                 return LastBPRead[8];                                                                           // Return what ???
 233         }
 234
 235         /**
 236          *
 237          */
 238         private void clearLastBP () {
 239                 int i;
 240
 241                 for (i = 0; i < LastBPRead.length; i++) {
 242                         LastBPRead[i] = 0;
 243                 }
 244         }
 245
 246         /**
 247          *
 248          */
 249         private void copyToLastBP (int[] BPBody) {
 250                 int i;
 251
 252                 for (i = 0; i < LastBPRead.length; i++) {
 253                         LastBPRead[i] = BPBody[i];
 254                 }
 255         }
 256
 257         /**
 258          *
 259          */
 260         public void continueExecution () throws IOException {
 261                 PHPDBGPacket DBGPacket;
 262
 263                 BPUnderHit = 0;
 264                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_CONTINUE);
 265
 266                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 267                         return;                                                 //  No
 268                 }
 269
 270                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 271
 272                 lastCommand = PHPDBGBase.DBGA_CONTINUE;                     // Store the info about the command we sent
 273         }
 274
 275         /**
 276          *
 277          */
 278         public void pauseExecution () throws IOException {
 279                 PHPDBGPacket DBGPacket;
 280
 281                 DBGPacket = new PHPDBGPacket (PHPDBGBase.IntToChar4 (PHPDBGBase.DBGC_PAUSE));
 282
 283                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 284                          return;                                                //  No
 285                 }
 286
 287                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 288         }
 289
 290         /**
 291          *
 292          */
 293         private int getBPUnderHit () {
 294                 int i;
 295                 int BPUnder             = 0;
 296                 int[] dbg_bpl_body      = new int[10];
 297
 298                 for (i = 0; i < DBGBPList.size (); i++) {                               // look for bp under hit
 299                         dbg_bpl_body = (int[]) DBGBPList.get (i);
 300
 301                         if (dbg_bpl_body[9] == 1) {
 302                                 BPUnder = dbg_bpl_body[8];
 303                         }
 304                 }
 305
 306                 return BPUnder;
 307         }
 308
 309         public int getLastCmd()
 310         {
 311                 return lastCmd;
 312         }
 313
 314         public int getSID()
 315         {
 316           return sid;
 317         }
 318
 319         public void setLastCmd (int cmd)
 320         {
 321                 lastCmd = cmd;
 322         }
 323
 324         /**
 325          *
 326          */
 327         public void stepInto () throws IOException {
 328                 PHPDBGPacket DBGPacket;
 329
 330                 BPUnderHit = 0;
 331                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPINTO);
 332
 333                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 334                         return;                                                 //  No
 335                 }
 336
 337                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 338
 339                 lastCommand = PHPDBGBase.DBGA_STEPINTO;                                         // Store the info about the command we sent
 340         }
 341
 342         /**
 343          *
 344          */
 345         public void stepOver () throws IOException {
 346                 PHPDBGPacket DBGPacket;
 347
 348                 BPUnderHit = 0;
 349                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPOVER);
 350
 351                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 352                         return;                                                 //  No
 353                 }
 354
 355                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 356
 357                 lastCommand = PHPDBGBase.DBGA_STEPOVER;                     // Store the info about the command we sent
 358         }
 359
 360         /**
 361          *
 362          */
 363         public void stepOut () throws IOException {
 364                 PHPDBGPacket DBGPacket;
 365
 366                 BPUnderHit = 0;
 367                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPOUT);
 368
 369                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 370                         return;                                                 //  No
 371                 }
 372
 373                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 374
 375                 lastCommand = PHPDBGBase.DBGA_STEPOUT;                      // Store the info about the command we sent
 376         }
 377
 378         /**
 379          *
 380          */
 381         public void stopExecution () throws IOException {
 382                 PHPDBGPacket DBGPacket;
 383
 384                 BPUnderHit = 0;
 385                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STOP);
 386
 387                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 388                         return;                                                 //  No
 389                 }
 390
 391                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 392         }
 393
 394         /**
 395          * This method is called by the proxy.
 396          * It sends a request to DBG to get the current variables
 397          * with their values. It waits for the response and processes
 398          * the input from DBG.
 399          *
 400          * @param stack The stackframe for which we want the variables.
 401          * @return      The array of variables
 402          */
 403         public Vector getVariables (PHPStackFrame stack) throws IOException, DebugException  {
 404                 PHPDBGPacket            DBGPacket;
 405                 PHPDBGFrame             DBGFrame1;
 406                 PHPDBGEvalString        evalStr;
 407
 408                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     //
 409             DBGFrame1 = new PHPDBGFrame (PHPDBGBase.FRAME_EVAL);        //
 410
 411                 DBGFrame1.addInt (0);                                                                           // istr = raw data ID
 412                 DBGFrame1.addInt (1);                                                                           // scope_id = -1 means current location, 0 never used, +1 first depth
 413
 414                 DBGPacket.addFrame (DBGFrame1);                             // Add command data
 415
 416                 if (proxy.getSocket ().isClosed ()) {                       // Do we have a socket for DBG communication?
 417                         return null;                                                                                    //  No, then leave here
 418                 }
 419
 420                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 421
 422                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 423                 flushAllPackets ();                                         // Read and process the response from DBG
 424
 425                 evalStr         = new PHPDBGEvalString (stack, serGlobals); // Process serialized variables
 426                 DBGVarList      = evalStr.getVariables ();
 427
 428                 if (DBGVarList.size () > 0) {                                                           // Did we get back variables?
 429                         PHPVariable var = (PHPVariable) DBGVarList.get (0);             // Yes, then get the first PHPVariable
 430                         PHPValue    val = (PHPValue) var.getValue ();           // Get the value
 431
 432                         if (var.getName ().equals ("")) {                                               // Is the root node an empty node (usually it is)
 433                                 DBGVarList = val.getChildVariables ();              // Then remove the empty node.
 434                                                                                                                                         // With removing the empty root node, it wouldn't be necessary to
 435                                                                                                                                         // set the name to an empty string. So the code below is just for
 436                                                                                                                                         // info or in case the users want to have the empty root node.
 437
 438                                                                                                                                         // The eclipse variable view cannot handle Variables which have an empty name
 439                                                                                                                                         // when it comes to variable tree restore operation. Without a name, no restore!
 440                                 var.setName (" ");                                                              // Give a name to the variable root node. Even if it is only a space :-)
 441                         }                                                                                                               // TODO the best would be to remove the empty root node, but this would
 442                                                                                                                                         // require a understanding and reworking of the PHPDBGEvalstring class.
 443                 }
 444
 445                 return DBGVarList;                                                                                      // Return the variables as list
 446         }
 447
 448         /**
 449          *
 450          * @param logString
 451          */
 452         public void log(String logString) throws IOException, DebugException  {
 453                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 454                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_LOG);
 455                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 456
 457                 rawCounter++;
 458                 DBGFrame1.addInt(rawCounter);                           // ilog
 459                 DBGFrame1.addInt(1);                                            // type
 460                 DBGFrame1.addInt(0);                                            // mod_no
 461                 DBGFrame1.addInt(0);                                            // line_no
 462                 DBGFrame1.addInt(0);                                            // imod_name
 463                 DBGFrame1.addInt(0);                                            // ext_info
 464
 465                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 466                 DBGFrame2.addInt(logString.length() + 1);       // length of rawdata (+ null char)
 467                 DBGFrame2.addString(logString);                         // log string
 468                 DBGFrame2.addChar('\0');                                        // null char
 469
 470                 // Add raw data first
 471                 DBGPacket.addFrame(DBGFrame2);
 472                 // Add command data
 473                 DBGPacket.addFrame(DBGFrame1);
 474
 475                 if (proxy.getSocket ().isClosed ()) {                   // Do we have a socket for DBG communication?
 476                         return;                                                                                         //  No, then leave here
 477                 }
 478
 479                 DBGPacket.sendPacket(os);
 480
 481                 waitResponse(1000);
 482                 flushAllPackets();
 483         }
 484
 485         public PHPVariable[] evalBlock(PHPStackFrame stack, String evalString) throws IOException, DebugException  {
 486                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 487                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_EVAL);
 488                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 489
 490                 rawCounter++;
 491                 DBGFrame1.addInt(rawCounter);                           // istr = raw data ID
 492                 DBGFrame1.addInt(1);                                            // scope_id = -1 means current location, 0 never used, +1 first depth
 493
 494                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 495                 DBGFrame2.addInt(evalString.length() + 1);      // length of rawdata (+ null char)
 496                 DBGFrame2.addString(evalString);                        // eval block
 497                 DBGFrame2.addChar('\0');                                        // null char
 498
 499                 // Add raw data first
 500                 DBGPacket.addFrame(DBGFrame2);
 501                 // Add command data
 502                 DBGPacket.addFrame(DBGFrame1);
 503
 504                 if (proxy.getSocket ().isClosed ()) {                       // Do we have a socket for DBG communication?
 505                         return null;                                                                                    //  No, then leave here
 506                 }
 507                 DBGPacket.sendPacket(os);
 508
 509                 waitResponse(1000);
 510                 flushAllPackets();
 511
 512                 PHPDBGEvalString evalStr=new PHPDBGEvalString(stack,evalRet);
 513
 514                 return evalStr.getVars();
 515
 516         }
 517
 518         /**
 519          * Read and process everthing we got from DBG
 520          */
 521         public void flushAllPackets () throws IOException {
 522                 while (readResponse() != 0);
 523         }
 524
 525         /**
 526          * Get the modules name by its number
 527          *
 528          * @param modNo The number (id) of the module
 529          * @return      The name of the module
 530          */
 531         public String getModByNo (int modNo) {
 532                 int             i;
 533                 PHPDBGMod       dbg_mod;
 534
 535                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 536                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 537
 538                         if (dbg_mod.getNo () == modNo) {                            // Is the module from the array the module we want?
 539                                 return dbg_mod.getName ();                              //  Yes, return the name of the module
 540                         }
 541                 }
 542
 543                 return "";                                                      // If nothing was found return emtpy string
 544         }
 545
 546         /**
 547          *
 548          * @param  modName The name of the module for which we want the ID
 549          * @return
 550          * - The ID of the module
 551          * - -1 if nothing was found
 552          */
 553         private int getModByName (String modName) {
 554                 int             i;
 555                 PHPDBGMod       dbg_mod;
 556
 557                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 558                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 559
 560                         if (dbg_mod.getName ().equalsIgnoreCase (modName)) {            // Is the module from the array the module we want?
 561                                 return dbg_mod.getNo ();                                //  Yes, return the name of the module
 562                         }
 563                 }
 564
 565                 return -1;                                                      // If nothing was found return -1
 566         }
 567
 568         /**
 569          * Return the string for the given frame number
 570          *
 571          * @param framesInfo The buffer which is to read
 572          * @param frameNo    The frame number
 573          * @return
 574          */
 575         private String getRawFrameData (char[] framesInfo, int frameNo) {
 576                 int   nextFrame = 0;                                                    // The current read position within the buffer
 577                 int[] dbg_frame = new int[2];                                           // The two frame header numbers
 578
 579                 while (nextFrame < framesInfo.length) {                                 // As long we have something within the buffer
 580                         dbg_frame[0] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame);           // The frame type
 581                         dbg_frame[1] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);       // The frame size
 582
 583                         nextFrame   += 8;                                                   // The current read position
 584
 585                         if (dbg_frame[1] == 0) {                                            // If frame size is 0
 586                                 return "";                                                      //  return an emtpy string
 587                         }
 588
 589                         switch (dbg_frame[0]) {                                                     // Switch for the frame type
 590                                 case PHPDBGBase.FRAME_RAWDATA:                                                  // The only frame type we are interrested in
 591                                         if (frameNo == PHPDBGBase.Char4ToInt (framesInfo, nextFrame)) {         // Is it correct  number of the frame
 592                                                 int toRead;                                                     //
 593
 594                                                 toRead = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);     // The size of the string
 595
 596                                                 return String.copyValueOf (framesInfo, nextFrame + 8, toRead);  // Copy frame content to String and return
 597                                         }
 598                                         break;
 599                         }
 600
 601                         nextFrame += dbg_frame[1];                                                                      // Go for the next frame (add the length of the current one)
 602                 }
 603
 604                 return "";                                                                                                                                              // We did not found any FRAM_RAWDATA, so return an emtpy strin
 605         }
 606
 607         /**
 608          *
 609          * The stackList contains the currently read stackframes which were sent
 610          * from DBG. The DBG interface holds a list of the active stack frames.
 611          * This method replicates the 'static' stackframe list with the DBG stackframe list
 612          * Replication is done in the following way:
 613          * <ul>
 614          * <li> It looks for new stackframes within the DBG stackframe list and
 615          *      adds them to the 'static' list.
 616          * <li> It looks for stackframes within the 'static' list, and removes them
 617          *              from the 'static' list in case the do not appear within the DBG list.
 618          * <li> It looks for stackframes which are already existent and replicates the
 619          *              line number and the index number.
 620          * <li> At the end the 'static' stackfram list has to be sorted by the stackframes
 621          *              index numbers.
 622          * </ul>
 623          *
 624          * Removes the unused stackframes from the list, or adds stackframes which
 625          * are not yet in the list.
 626          *
 627          *
 628          * @param stackList
 629          */
 630         private void updateStackFrameList (Vector stackList) {
 631                 int                     i;
 632                 int             n;
 633                 PHPStackFrame   stackFrameNew;
 634                 PHPStackFrame   stackFrameOld;
 635                 PHPStackFrame[] newStackList;
 636
 637                 for (i = 0; i < stackList.size (); i++) {                                                               // For all stackList entries
 638                         stackFrameNew = (PHPStackFrame) stackList.get(i);
 639
 640                         for (n = 0; n < stackListOld.size (); n++) {                                    // For all StackFrames in the StackFrame list
 641                                 stackFrameOld = (PHPStackFrame) stackListOld.get (n);                   //
 642
 643                                 if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ())) { // Did we find the sent stackframe within the list of old stackframes?
 644                                         stackFrameOld.setLineNumber (stackFrameNew.getLineNumber ());
 645                                         stackFrameOld.setIndex (stackFrameNew.getIndex ());
 646
 647                                         break;                                                                  //  Yes, then break;
 648                                 }
 649                         }
 650
 651                         if (n == stackListOld.size ()) {                                    // Did not find the new stackframe within the list
 652                                  stackListOld.add (stackFrameNew);                              //  then add the new stackframe
 653                         }
 654                 }
 655
 656                 // And now for removing unused stackframes from list
 657
 658                 for (n = 0; n < stackListOld.size (); n++) {                                            // For all StackFrames in the StackFrame list
 659                         stackFrameOld = (PHPStackFrame) stackListOld.get (n);                           //
 660
 661                         for (i = 0; i < stackList.size (); i++) {                                                       // For all stackList entries
 662                                 stackFrameNew = (PHPStackFrame) stackList.get (i);
 663
 664                                 if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ())) { // Did we find the sent stackframe within the list of old stackframes?
 665                                         break;                                                                  //  Yes, then break;
 666                                 }
 667                         }
 668
 669                         if (i == stackList.size ()) {                                           // Did not find the old stackframe within the list of new ones
 670                                  stackListOld.remove (n);                                       //  then remove the old stackframe from list
 671                                  n -= 1;                                                        // Adjust the stack list index
 672                         }
 673                 }
 674
 675                 Collections.sort (stackListOld);                                                                                // Sort the 'static' stackframe list by the stackframe index numbers.
 676                                                                                                                                                                 //
 677                 newStackList = new PHPStackFrame[stackListOld.size ()];
 678                 newStackList = (PHPStackFrame[]) stackListOld.toArray (newStackList);
 679                 DBGStackList = newStackList;
 680         }
 681
 682     /**
 683      * Read the response from DBG and process the frame
 684      *
 685          * @return
 686          * - The received command
 687          * - or 0 if something was wrong
 688      */
 689         public int readResponse () throws IOException {
 690         int     bytesToRead            = 0;                         // The number of byte to read for the current DBG block
 691         int     nextFrame              = 0;                         // The current read position within entirePack
 692         int     i                      = 0;
 693         int     cmdReceived            = 0;
 694         int     stackIndex             = 0;
 695         boolean errorStack             = false;
 696         char[]  dbg_header_struct_read = new char[16];              // The buffer for the first 16 bytes of a block
 697         int[]   dbg_header_struct      = new int[4];                // The first four numbers (long) of a block
 698         int[]   dbg_bpl_tmp            = new int[10];
 699         int[]   dbg_frame              = new int[2];
 700         int[]   dbg_eval_tmp           = new int[3];
 701         int[]   dbg_src_tree_tmp       = new int[4];                //
 702         int[]   dbg_error_tmp          = new int[2];
 703         Vector  rawList                = new Vector();
 704         Vector  stackList              = new Vector();              // Intermediate stacklist which is build up in FRAME_STACK frame
 705
 706         rawList.clear ();
 707         stackList.clear ();
 708
 709                 // Read from input
 710         while (readInput (dbg_header_struct_read, 16) != 0) {                               // Read 16 byte from input stream
 711                         dbg_header_struct[0] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 0);               // Debug sync header
 712             dbg_header_struct[1] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 4);           // Command
 713             dbg_header_struct[2] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 8);       //
 714             dbg_header_struct[3] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 12);      // Bytes within this block
 715
 716             if (dbg_header_struct[0] != 0x5953) {                                           // Check DBG sync bytes
 717                 return 0;                                                                   // Wrong header
 718             }
 719
 720             cmdReceived = dbg_header_struct[1];                                             // Get the command
 721             setLastCmd (cmdReceived);                                                                                                           // Store the info about the current command
 722             bytesToRead = dbg_header_struct[3];                                                                                         // Get the number of bytes to read for this block
 723
 724                         //System.out.println("Response Received: " + cmdReceived);
 725                         char[] entirePack = new char[bytesToRead];                                      // Store the block data into buffer 'entirePack'
 726
 727             if (bytesToRead > 0) {                                                          // If there is something within the frame
 728                 if (readInput (entirePack, bytesToRead) < bytesToRead) {                    // Read the frame into the buffer
 729                     return 0;                                                               // We did not read enough bytes, error
 730                 }
 731                         }
 732
 733                         nextFrame = 0;                                                                  // Start with the first frame
 734
 735                         while (nextFrame < bytesToRead) {                                               // As long as we have something within this block
 736                                 dbg_frame[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame);                           // The name of the frame
 737                                 dbg_frame[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);               // The size of the frame
 738                                 nextFrame   += 8;                                                           // The next read position
 739
 740                                 if (dbg_frame[1] == 0) {                                                    // Something within the frame?
 741                                         return 0;                                                               //  Nothing to read, error
 742                                 }
 743
 744                                 switch (dbg_frame[0]) {
 745                                         case PHPDBGBase.FRAME_STACK:
 746                                                 int[] dbg_stack_new = new int[4];                                       //
 747
 748                                                 dbg_stack_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);   // Source line number
 749                                                 dbg_stack_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);   // Module number
 750                                                 dbg_stack_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);   // Scope id
 751                                                 dbg_stack_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);  // ID of description string
 752
 753                                                 if ((dbg_stack_new[1] != 0) && !errorStack) {
 754                                                         PHPStackFrame newStack;
 755
 756                                                         stackIndex++;
 757                                                         newStack = new PHPStackFrame (null,                                 // The thread
 758                                                                                       getModByNo (dbg_stack_new[1]),        // The name of the module (file)
 759                                                                                       dbg_stack_new[0],                     // The source line number
 760                                                                                                                   stackIndex,
 761                                                                                                                   getRawFrameData (entirePack,          // Get the string from this packet
 762                                                                                                                                    dbg_stack_new[3]),   // The frame ID for which we want the string
 763                                                                                                                   dbg_stack_new[1]);                                    // The module number
 764                                                         stackList.add (newStack);
 765                                                 }
 766
 767                                                 errorStack = false;
 768                                                 break;
 769
 770                                         case PHPDBGBase.FRAME_SOURCE:                                                   // Nothing to be done here
 771                                                 break;                                                                      // TODO: what's with that frame? Something interesting
 772
 773                                         case PHPDBGBase.FRAME_SRC_TREE:                                                 //
 774                                                 dbg_src_tree_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);        // The parent module number
 775                                                 dbg_src_tree_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);        // The parent line number (not used)
 776                                                 dbg_src_tree_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);        // The module number
 777                                                 dbg_src_tree_tmp[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);       // The filename number
 778
 779                                                 if (getModByNo (dbg_src_tree_tmp[2]).equals ("")) {
 780                                                         String fileName;
 781
 782                                                         fileName = new String (getRawFrameData (entirePack, dbg_src_tree_tmp[3]));      // Get the filename
 783
 784                                                         if (fileName.length () > 0) {                                               // If we have a filename
 785                                                                 fileName = fileName.substring (0, fileName.length () - 1);              // Remove '\0' char
 786                                                         }
 787
 788                                                         if (dbg_src_tree_tmp[2] != 0) {                                             // If there is a module number
 789                                                                 PHPDBGMod modNew;
 790
 791                                                                 modNew = new PHPDBGMod (dbg_src_tree_tmp[2], fileName);                 // Create a module object
 792
 793                                                                 DBGMods.add (modNew);                                                   // And store it to array
 794                                                         }
 795                                                 }
 796                                                 break;
 797
 798                                         case PHPDBGBase.FRAME_RAWDATA:                                                      // Nothing to be done here
 799                                                 break;                                                                          //  FRAME_RAWDATA are processed within getRawFrameData
 800
 801                                         case PHPDBGBase.FRAME_ERROR:                                                                                                            // An error frame
 802                                                 errorStack       = true;                                                                                                                // Yes, we have an error stack
 803                                                 dbg_error_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                   // Error type
 804                                                 dbg_error_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                   // Error message ID
 805
 806                                                 String error = "\n";                                                            //
 807
 808                                                 switch (dbg_error_tmp[0]) {                                                                                                             // Switch on error type
 809                                                         case PHPDBGBase.E_ERROR:                        error += "[Error]";                     break;
 810                                                         case PHPDBGBase.E_WARNING:                      error += "[Warning]";                   break;
 811                                                         case PHPDBGBase.E_PARSE:                        error += "[Parse Error]";               break;
 812                                                         case PHPDBGBase.E_NOTICE:                       error += "[Notice]";                    break;
 813                                                         case PHPDBGBase.E_CORE_ERROR:           error += "[Core Error]";                break;
 814                                                         case PHPDBGBase.E_CORE_WARNING:         error += "[Core Warning]";              break;
 815                                                         case PHPDBGBase.E_COMPILE_ERROR:        error += "[Compile Error]";             break;
 816                                                         case PHPDBGBase.E_COMPILE_WARNING:      error += "[Compile Warning]";   break;
 817                                                         case PHPDBGBase.E_USER_ERROR:           error += "[User Error]";                break;
 818                                                         case PHPDBGBase.E_USER_WARNING:         error += "[User Warning]";              break;
 819                                                         case PHPDBGBase.E_USER_NOTICE:          error += "[User Notice]";               break;
 820                                                         default:                                                        error += "[Unexpected Error]";  break;
 821                                                 }
 822
 823                                                 error += ": ";
 824                                                 error += new String (getRawFrameData (entirePack, dbg_error_tmp[1]));                   // Add the error string for this error message ID
 825
 826                                                 if (error.length () > 0) {                                                                                                              // If we have a error message
 827                                                          error = error.substring (0, error.length () - 1);                                                      //  Remove '\0' char
 828                                                 }
 829
 830                                                 error += "\n";                                                                  // Append a CR
 831
 832                                                 PHPDebugCorePlugin.log (new DebugException (new Status (IStatus.WARNING,
 833                                                                                                         PHPDebugCorePlugin.PLUGIN_ID,
 834                                                                                                                                                                 IStatus.OK,
 835                                                                                                                                                                 error, null)));
 836
 837                                                 // To print errors on the console, I must execute a code in the
 838                                                 // php context, that write the stderr... I didn't found a better way
 839                                                 // TODO: Find a better way????
 840
 841 //                                              String codeExec= "";
 842 //                                              codeExec= "fwrite(fopen('php://stderr', 'w'),\\\"" + error + "\\\");";
 843 //                                              try {
 844 //                                                      evalBlock("eval(\"" + codeExec + "\");");
 845 //                                              } catch (DebugException e) {
 846 //                                                      PHPDebugCorePlugin.log(e);
 847 //                                              }
 848 //
 849                                                 if (!stopOnError) {                                                             // Is always false (Did not see where this is set to true!?)
 850                                                         if (lastCommand.equals (PHPDBGBase.DBGA_CONTINUE)) {                        // If last command for PHP was a 'continue',
 851                                                                 continueExecution ();                                                   //  send continue again
 852                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPINTO)) {                 // If last command for PHP was a 'step into',
 853                                                                 stepInto ();                                                            //  send 'step into' again
 854                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOUT)) {                  // If last command for PHP was a 'step out',
 855                                                                 stepOut ();                                                             //  send 'step out' again
 856                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOVER)) {                 // If last command for PHP was a 'step over',
 857                                                                 stepOver ();                                                            //  send 'step over' again
 858                                                         }
 859                                                 }
 860                                                 break;
 861
 862                                         case PHPDBGBase.FRAME_EVAL:
 863                                                 String evalString;
 864
 865                                                 evalString      = new String ("");
 866                                                 dbg_eval_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                    // istr
 867                                                 dbg_eval_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                    // iresult
 868                                                 dbg_eval_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);                    // ierror
 869
 870                                                 evalRet                 = getRawFrameData (entirePack, dbg_eval_tmp[1]);                //
 871                                                 evalString              = getRawFrameData (entirePack, dbg_eval_tmp[0]);                //
 872                                                 serGlobals              = evalRet;                                                      //
 873                                                 break;
 874
 875                                         case PHPDBGBase.FRAME_BPS:                                                          //
 876                                                 break;                                                                          //
 877
 878                                         case PHPDBGBase.FRAME_BPL:
 879                                                 int[] dbg_bpl_new;
 880
 881                                                 dbg_bpl_new        = new int[10];
 882                                                 dbg_bpl_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);
 883                                                 dbg_bpl_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);
 884                                                 dbg_bpl_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);
 885                                                 dbg_bpl_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);
 886                                                 dbg_bpl_new[4] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 16);
 887                                                 dbg_bpl_new[5] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 20);
 888                                                 dbg_bpl_new[6] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 24);
 889                                                 dbg_bpl_new[7] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 28);
 890                                                 dbg_bpl_new[8] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 32);
 891                                                 dbg_bpl_new[9] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 36);
 892
 893                                                 // look if breakpoint already exists in vector
 894                                                 for (i = 0; i < DBGBPList.size (); i++) {
 895                                                         dbg_bpl_tmp = (int[]) DBGBPList.get (i);
 896
 897                                                         if (dbg_bpl_tmp[8] == dbg_bpl_new[8]) {
 898                                                                 DBGBPList.remove (i);
 899
 900                                                                 break;
 901                                                         }
 902                                                 }
 903
 904                                                 // add breakpoint to vector
 905                                                 DBGBPList.add (dbg_bpl_new);
 906                                                 copyToLastBP (dbg_bpl_new);
 907
 908                                                 // mod no returned?
 909                                                 if (getModByNo (dbg_bpl_new[0]).equals ("")) {
 910                                                         String fileName;
 911
 912                                                         fileName = new String (getRawFrameData (entirePack, dbg_bpl_new[2]));
 913
 914                                                         if (fileName.length () > 0) {                                               // If we have filename
 915                                                                 fileName = fileName.substring (0, fileName.length () - 1);                              //  Remove '\0' char
 916                                                         }
 917
 918                                                         if (dbg_bpl_new[0] != 0) {
 919                                                                 PHPDBGMod modNew;
 920
 921                                                                 modNew = new PHPDBGMod (dbg_bpl_new[0], fileName);
 922
 923                                                                 DBGMods.add (modNew);
 924                                                         }
 925                                                 }
 926                                                 break;
 927
 928                                         case PHPDBGBase.FRAME_VER:
 929                                                 break;
 930
 931                                         case PHPDBGBase.FRAME_SID:
 932                                                 sid = PHPDBGBase.Char4ToInt(entirePack, nextFrame + 0);
 933                                                 break;
 934
 935                                         case PHPDBGBase.FRAME_SRCLINESINFO:
 936                                                 break;
 937
 938                                         case PHPDBGBase.FRAME_SRCCTXINFO:
 939                                                 break;
 940
 941                                         case PHPDBGBase.FRAME_LOG:
 942                                                 break;
 943
 944                                         case PHPDBGBase.FRAME_PROF:
 945                                                 break;
 946
 947                                         case PHPDBGBase.FRAME_PROF_C:
 948                                                 break;
 949
 950                                         case PHPDBGBase.FRAME_SET_OPT:
 951                                                 break;
 952                                 }
 953
 954                                 nextFrame += dbg_frame[1];                                                      // go to next frame
 955                         }
 956
 957                         // Now process command
 958                         switch(cmdReceived) {
 959                                 case PHPDBGBase.DBGC_REPLY:
 960                                         break;
 961
 962                                 case PHPDBGBase.DBGC_STARTUP:
 963                                         break;
 964
 965                                 case PHPDBGBase.DBGC_END:
 966                                         sessionEnded = true;
 967                                         break;
 968
 969                                 case PHPDBGBase.DBGC_BREAKPOINT:
 970                                         BPUnderHit   = getBPUnderHit ();
 971                                         updateStackFrameList (stackList);
 972                                         break;
 973
 974                                 case PHPDBGBase.DBGC_STEPINTO_DONE:
 975                                 case PHPDBGBase.DBGC_STEPOVER_DONE:
 976                                 case PHPDBGBase.DBGC_STEPOUT_DONE:
 977                                 case PHPDBGBase.DBGC_EMBEDDED_BREAK:
 978                                 case PHPDBGBase.DBGC_PAUSE:
 979                                         BPUnderHit   = 1;
 980                                         updateStackFrameList (stackList);
 981                                         break;
 982
 983                                 case PHPDBGBase.DBGC_ERROR:
 984                                         stackList.clear ();
 985                                         updateStackFrameList (stackList);
 986                                         break;
 987
 988                                 case PHPDBGBase.DBGC_LOG:
 989                                         break;
 990
 991                                 case PHPDBGBase.DBGC_SID:
 992                                         break;
 993                         }
 994                 }
 995
 996                 return cmdReceived;                                         // Return the command we received with this block
 997         }
 998
 999     /**
1000      *
1001      */
1002
1003         public PHPStackFrame[] getStackList() {
1004                 return DBGStackList;
1005         }
1006
1007         /**
1008          * Reads from input buffer (response sent from DBG) the given number of chars
1009          * into frame buffer.
1010          *
1011          * @param buffer  The frame buffer where to store the read data from DBG.
1012          * @param bytes   The number of bytes (chars) which are to read from input stream.
1013          * @return        The number of bytes actually read.
1014          */
1015         private int readInput (char[] buffer, int bytes) throws IOException {
1016                 int bytesRead = 0;                                                                                      // Reset the bytes read counter
1017
1018                 for (int i = 0; i < bytes; i++) {                           // For the number of bytes we should read
1019                         if (in.ready ()) {                                                                              // If input stream is ready for reading
1020                                 buffer[i] = (char) (in.read () & 0x00FF);           // Read a char and store only the least significant 8-bits
1021                                 bytesRead++;                                        // Increment the bytes read counter
1022                         }
1023                         else {                                                  // Input stream is not ready
1024                                 break;                                              // Break the loop
1025                         }
1026                 }
1027
1028                 return bytesRead;                                                                                       // Return the number of bytes actually read
1029         }
1030
1031         /**
1032          * PHPProxy could stop the waiting for a response with this method.
1033          *
1034          */
1035         public void setShouldStop () {
1036                 this.shouldStop = true;
1037         }
1038
1039         /**
1040          * @param milliseconds The maximum time in milliseconds we wait for something
1041          *                     to be send from DBG.
1042          * @return             - true if something was received from DBG
1043          *                                         - false if nothing was send from DBG within the given time
1044          *
1045          */
1046         public boolean waitResponse (long milliseconds) throws IOException {
1047                 long timeout;
1048
1049                 timeout = System.currentTimeMillis () + milliseconds;           // Calculate the system time till we wait.
1050
1051                 while (System.currentTimeMillis () < timeout) {             // Is waiting time running out?
1052                         if (in.ready () || shouldStop) {                        //  No, so did we get something or should we stop now
1053                                 break;                                              //   Yes, break the waiting
1054                         }
1055                 }
1056
1057                 return in.ready ();                                         // true if we got something from DBG
1058         }
1059 }