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   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.Arrays;
  18 import java.util.Collections;
  19 import java.util.Vector;
  20
  21 import net.sourceforge.phpdt.internal.debug.core.model.PHPDBGEvalString;
  22 import net.sourceforge.phpdt.internal.debug.core.model.PHPStackFrame;
  23 import net.sourceforge.phpdt.internal.debug.core.model.PHPValue;
  24 import net.sourceforge.phpdt.internal.debug.core.model.PHPVariable;
  25
  26 import org.eclipse.core.runtime.IStatus;
  27 import org.eclipse.core.runtime.Status;
  28 import org.eclipse.debug.core.DebugException;
  29
  30 /**
  31  * The interface object are created by the proxy
  32  *
  33  */
  34 public class PHPDBGInterface {
  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 = new PHPStackFrame[0];
  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         private static final String GlobalVariablesTitle = PHPDebugCorePlugin
  59                         .getResourceString("VariablesView.GlobalVariables.title");
  60
  61         /**
  62          * @param in    The input stream (communication from DBG).
  63          * @param os    The output stream (communication to DBG).
  64          * @param proxy The proxy to which this interface belongs.
  65          */
  66         public PHPDBGInterface (BufferedReader in, OutputStream os, PHPDBGProxy proxy) {
  67                 DBGBPList.clear ();
  68
  69                 this.in         = in;
  70                 this.os         = os;
  71                 this.proxy      = proxy;
  72         }
  73
  74         /**
  75          *
  76          * @param mod_name  The module (source file) to which we add the breakpoint.
  77          * @param line      The line where the breakpoint is set.
  78          * @param hitCount  The number of hit counts before suspend.
  79          * @param condition The break condition
  80          * @return          Breakpoint ID ???.
  81          */
  82         public int addBreakpoint (String mod_name, int line, int hitCount, String condition) throws IOException {
  83                 return setBreakpoint (mod_name, condition, line, PHPDBGBase.BPS_ENABLED + PHPDBGBase.BPS_UNRESOLVED, 0, hitCount, 0, 0, 0);
  84         }
  85
  86         /**
  87          *
  88          * @param mod_name The module (source file) to which we add the breakpoint.
  89          * @param line     The line where the breakpoint is set.
  90          * @param bpNo     The breakpoint ID ???.
  91          */
  92         public void removeBreakpoint (String mod_name, int line, int bpNo) throws IOException {
  93                 setBreakpoint (mod_name, "", line, PHPDBGBase.BPS_DISABLED, 0, 0, 0, bpNo, 0);
  94         }
  95
  96         /**
  97          * Is this method used anywhere?
  98          *
  99          */
 100         public void requestDBGVersion () throws IOException {
 101                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 102                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 103
 104                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 105                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_VER);         // We want the version of DBG
 106
 107                 DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 108
 109                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 110                         return;                                                 //  No
 111                 }
 112
 113                 DBGPacket.sendPacket (os);                                                                      // Send the request to DBG
 114         }
 115
 116         /**
 117          * Called by the proxy
 118          *
 119          */
 120         public void getSourceTree () throws IOException {
 121                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 122                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 123
 124                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 125                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_SRC_TREE);        // We want a source tree from DBG
 126
 127                 DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 128
 129                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 130                         return;                                                                                                 //  No
 131                 }
 132
 133                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 134
 135                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 136                 flushAllPackets ();                                                                             // Read and process the response from DBG
 137         }
 138
 139         /**
 140          * Is this method called from anywhere?
 141          *
 142          * @param modName The modul (filename).
 143          */
 144         public void addDBGModName (String modName) throws IOException {
 145                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 146                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 147
 148                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 149                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);     // We want Module name from DBG
 150
 151                 rawCounter++;                                               // Increment the rawData ID counter
 152                 DBGFrame.addInt (rawCounter);                                                           // FRAME_RAWDATA ID
 153                 DBGFrame.addInt (modName.length () + 1);                                        // The length of rawdata string (incl. null char termination)
 154                 DBGFrame.addString (modName);                                                           // The file name (module name)
 155                 DBGFrame.addChar ('\0');                                                                        // Add the C-String null termination
 156
 157                 DBGPacket.addFrame (DBGFrame);
 158
 159                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 160                         return;                                                                                                 //  No
 161                 }
 162
 163                 DBGPacket.sendPacket (os);
 164         }
 165
 166         /**
 167          * This method is called for adding or removing breakpoints.
 168          *
 169          * @param mod_name      The module name (file name).
 170          * @param condition     Info about the condition when to break (not used at the moment).
 171          * @param line          The breakpoints line.
 172          * @param state         Info whether this breakpoint has to be dis- or enabled.
 173          * @param istep         Always 0.
 174          * @param hitcount      Always 0.
 175          * @param skiphits      Always 0.
 176          * @param bpno          The breakpoint ID.
 177          * @param isunderhit    ???
 178          * @return
 179          */
 180         private int setBreakpoint (String mod_name, String condition, int line, int state, int istemp, int hitcount, int skiphits, int bpno, int isunderhit) throws IOException {
 181                 PHPDBGPacket    DBGPacket;
 182                 PHPDBGFrame     DBGFrame1;
 183                 PHPDBGFrame     DBGFrame2;
 184                 PHPDBGFrame             DBGFrame3;
 185                 int                     modNo;
 186
 187                 DBGPacket       = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);
 188                 DBGFrame1       = new PHPDBGFrame (PHPDBGBase.FRAME_BPS);
 189                 DBGFrame2       = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);
 190                 DBGFrame3       = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);
 191
 192                 modNo           = getModByName (mod_name);                                              // Get the module ID by name
 193
 194                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 195                         DBGFrame1.addInt (modNo);                                                               // Add the module ID to frame 1
 196                 } else {
 197                         DBGFrame1.addInt (0);                                                                   // mod number (0 use file name)
 198                 }
 199
 200                 DBGFrame1.addInt (line);                                                                        // line number
 201
 202                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 203                         DBGFrame1.addInt (0);                                                                   // use mod number
 204                 } else {
 205                         rawCounter++;
 206                         DBGFrame1.addInt (rawCounter);                                                  // ID of FRAME_RAWDATA to send file name
 207                 }
 208
 209                 if (modNo < 0) {                                            // Did we find a module ID for the module name?
 210                         DBGFrame2.addInt (rawCounter);                                      // FRAME_RAWDATA ID
 211                         DBGFrame2.addInt (mod_name.length() + 1);                   // length of rawdata (+ null char)
 212                         DBGFrame2.addString (mod_name);                                     // file name
 213                         DBGFrame2.addChar ('\0');                                                   // null char
 214
 215                         DBGPacket.addFrame (DBGFrame2);                         // First add file name data
 216                 }
 217
 218                 DBGFrame1.addInt (state);                                       // state BPS_*
 219                 DBGFrame1.addInt (istemp);                                      // istemp
 220                 DBGFrame1.addInt (0);                                               // hit count; this is not supported as one might think
 221                 DBGFrame1.addInt (hitcount);                                // skip hits is what we think is hit count.
 222
 223                 if (!condition.equals ("")) {                                                           // Do we have a condition for breakpoint
 224                         rawCounter++;                                                                                   // Set to new ID
 225                         DBGFrame1.addInt (rawCounter);                          // ID of condition
 226
 227                         DBGFrame3.addInt (rawCounter);                                      // FRAME_RAWDATA ID
 228                         DBGFrame3.addInt (condition.length() + 1);                  // length of rawdata (+ null char)
 229                         DBGFrame3.addString (condition);                                        // The break condition
 230                         DBGFrame3.addChar ('\0');                                                   // null char
 231
 232                         DBGPacket.addFrame (DBGFrame3);                         // First add break condition
 233                 }
 234                 else {
 235                         DBGFrame1.addInt (0);                                           // ID of condition is 0, because there is no condition
 236                 }
 237
 238                 DBGFrame1.addInt (bpno);                                            // breakpoint number
 239                 DBGFrame1.addInt (isunderhit);                                  // is under hit
 240
 241                 DBGPacket.addFrame (DBGFrame1);                                                         // Second add command data
 242
 243                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 244                         return 0;                                               //  No
 245                 }
 246
 247                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 248
 249                 clearLastBP ();
 250
 251                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 252                 flushAllPackets ();                                         // Read and process the response from DBG
 253
 254                 return LastBPRead[8];                                                                           // Return what ???
 255         }
 256
 257         /**
 258          *
 259          */
 260         private void clearLastBP () {
 261                 int i;
 262
 263                 for (i = 0; i < LastBPRead.length; i++) {
 264                         LastBPRead[i] = 0;
 265                 }
 266         }
 267
 268         /**
 269          *
 270          */
 271         private void copyToLastBP (int[] BPBody) {
 272                 int i;
 273
 274                 for (i = 0; i < LastBPRead.length; i++) {
 275                         LastBPRead[i] = BPBody[i];
 276                 }
 277         }
 278
 279         /**
 280          *
 281          */
 282         public void continueExecution () throws IOException {
 283                 PHPDBGPacket DBGPacket;
 284
 285                 BPUnderHit = 0;
 286                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_CONTINUE);
 287
 288                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 289                         return;                                                 //  No
 290                 }
 291
 292                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 293
 294                 lastCommand = PHPDBGBase.DBGA_CONTINUE;                     // Store the info about the command we sent
 295         }
 296
 297         /**
 298          *
 299          */
 300         public void pauseExecution () throws IOException {
 301                 PHPDBGPacket DBGPacket;
 302
 303                 DBGPacket = new PHPDBGPacket (PHPDBGBase.IntToChar4 (PHPDBGBase.DBGC_PAUSE));
 304
 305                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 306                          return;                                                //  No
 307                 }
 308
 309                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 310         }
 311
 312         /**
 313          *
 314          */
 315         private int getBPUnderHit () {
 316                 int i;
 317                 int BPUnder             = 0;
 318                 int[] dbg_bpl_body      = new int[10];
 319
 320                 for (i = 0; i < DBGBPList.size (); i++) {                               // look for bp under hit
 321                         dbg_bpl_body = (int[]) DBGBPList.get (i);
 322
 323                         if (dbg_bpl_body[9] == 1) {
 324                                 BPUnder = dbg_bpl_body[8];
 325                         }
 326                 }
 327
 328                 return BPUnder;
 329         }
 330
 331         public int getLastCmd()
 332         {
 333                 return lastCmd;
 334         }
 335
 336         public int getSID()
 337         {
 338           return sid;
 339         }
 340
 341         public void setLastCmd (int cmd)
 342         {
 343                 lastCmd = cmd;
 344         }
 345
 346         /**
 347          *
 348          */
 349         public void stepInto () throws IOException {
 350                 PHPDBGPacket DBGPacket;
 351
 352                 BPUnderHit = 0;
 353                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPINTO);
 354
 355                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 356                         return;                                                 //  No
 357                 }
 358
 359                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 360
 361                 lastCommand = PHPDBGBase.DBGA_STEPINTO;                                         // Store the info about the command we sent
 362         }
 363
 364         /**
 365          *
 366          */
 367         public void stepOver () throws IOException {
 368                 PHPDBGPacket DBGPacket;
 369
 370                 BPUnderHit = 0;
 371                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPOVER);
 372
 373                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 374                         return;                                                 //  No
 375                 }
 376
 377                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 378
 379                 lastCommand = PHPDBGBase.DBGA_STEPOVER;                     // Store the info about the command we sent
 380         }
 381
 382         /**
 383          *
 384          */
 385         public void stepOut () throws IOException {
 386                 PHPDBGPacket DBGPacket;
 387
 388                 BPUnderHit = 0;
 389                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPOUT);
 390
 391                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 392                         return;                                                 //  No
 393                 }
 394
 395                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 396
 397                 lastCommand = PHPDBGBase.DBGA_STEPOUT;                      // Store the info about the command we sent
 398         }
 399
 400         /**
 401          *
 402          */
 403         public void stopExecution () throws IOException {
 404                 PHPDBGPacket DBGPacket;
 405
 406                 BPUnderHit = 0;
 407                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STOP);
 408
 409                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 410                         return;                                                 //  No
 411                 }
 412
 413                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 414         }
 415
 416         /**
 417          * This method is called by the proxy.
 418          * It sends a request to DBG to get the current variables
 419          * with their values. It waits for the response and processes
 420          * the input from DBG.
 421          *
 422          * @param stack The stackframe for which we want the variables.
 423          * @return      The array of variables
 424          */
 425         public synchronized Vector getVariables(PHPStackFrame stack) throws IOException, DebugException {
 426                 PHPDBGPacket            DBGPacket;
 427                 PHPDBGFrame             DBGFrame1;
 428                 PHPDBGEvalString        evalStr;
 429
 430                 Vector globalList = new Vector();
 431                 // IStackFrame[] stacks = stack.getThread().getStackFrames();
 432                 // ( PHPStackFrame.getThread().getStackFrames() returns DBGStackList )
 433                 if (DBGStackList.length > 1) {
 434                         // get global variables (and assign them to 'main()' stackframe)
 435                         globalList = getVariables(DBGStackList[DBGStackList.length - 1], PHPDBGBase.GLOBAL_SCOPE_ID);
 436                         if (!globalList.isEmpty()) {
 437                                 // remove unexpected '$this=?' variable
 438                                 PHPVariable var = (PHPVariable) globalList.get(0);
 439                                 PHPValue val = (PHPValue) var.getValue();
 440                                 Vector workList = val.getChildVariables();
 441                                 for (int i = 0; i < workList.size(); i++) {
 442                                         if (((PHPVariable) workList.get(i)).getName().equals("$this")) {
 443                                                 workList.remove(i);
 444                                                 break;
 445                                         }
 446                                 }
 447                                 var.setName(GlobalVariablesTitle);
 448                                 var.setModifiable(false);
 449                         }
 450                 }
 451
 452 //              DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     //
 453 //          DBGFrame1 = new PHPDBGFrame (PHPDBGBase.FRAME_EVAL);        //
 454 //
 455 //              DBGFrame1.addInt (0);                                                                           // istr = raw data ID
 456 //              DBGFrame1.addInt (1);                                                                           // scope_id = -1 means current location, 0 never used, +1 first depth
 457 //
 458 //              DBGPacket.addFrame (DBGFrame1);                             // Add command data
 459 //
 460 //              if (proxy.getSocket ().isClosed ()) {                       // Do we have a socket for DBG communication?
 461 //                      return new Vector ();                                                                   // No, then leave here with an empty vector
 462 //              }
 463 //
 464 //              serGlobals = "";
 465 //              DBGPacket.sendPacket (os);                                  // Send the request to DBG
 466 //
 467 //              waitResponse (1000);                                        // Wait for the DBG response (1 second)
 468 //              flushAllPackets ();                                         // Read and process the response from DBG
 469 //
 470 //              evalStr         = new PHPDBGEvalString (stack, serGlobals); // Process serialized variables
 471 //              DBGVarList      = evalStr.getVariables ();
 472
 473                 int scopeID = stack.getScopeID();
 474                 if (scopeID == PHPDBGBase.CURLOC_SCOPE_ID) {
 475                         // current stackframe
 476                         DBGVarList = getVariables(stack, PHPDBGBase.CURLOC_SCOPE_ID);
 477                 } else if ((scopeID == PHPDBGBase.CURLOC_SCOPE_ID + 1) && !globalList.isEmpty()) {
 478                         // 'main()' stackframe
 479                         PHPVariable var = (PHPVariable) globalList.get(0);
 480                         PHPValue val = (PHPValue) var.getValue();
 481                         DBGVarList = val.getChildVariables();
 482                         return DBGVarList;
 483                 } else {
 484                         // back-trace stackframe
 485                         // Never: DBGVarList = getVariables(stack, scopeID);
 486                         // DBG 2.15.5 causes Application Error (on win32) in some cases
 487                         DBGVarList.clear();
 488                 }
 489
 490                 if (DBGVarList.size() > 0) {                                                            // Did we get back variables?
 491                         PHPVariable var = (PHPVariable) DBGVarList.get(0);              // Yes, then get the first PHPVariable
 492                         PHPValue    val = (PHPValue) var.getValue();                    // Get the value
 493
 494                         if (var.getName().equals("")) {                                                 // Is the root node an empty node (usually it is)
 495                                 DBGVarList = val.getChildVariables();                           // Then remove the empty node.
 496                                                                                                                                         // With removing the empty root node, it wouldn't be necessary to
 497                                                                                                                                         // set the name to an empty string. So the code below is just for
 498                                                                                                                                         // info or in case the users want to have the empty root node.
 499
 500                                                                                                                                         // The eclipse variable view cannot handle Variables which have an empty name
 501                                                                                                                                         // when it comes to variable tree restore operation. Without a name, no restore!
 502                                 //var.setName (" ");                                                            // Give a name to the variable root node. Even if it is only a space :-)
 503                         }                                                                                                               // TODO the best would be to remove the empty root node, but this would
 504                                                                                                                                         // require a understanding and reworking of the PHPDBGEvalstring class.
 505                 }
 506
 507                 if (!globalList.isEmpty()) {
 508                         DBGVarList.add(globalList.get(0));
 509                 }
 510
 511                 return DBGVarList;                                                                                      // Return the variables as list
 512         }
 513
 514         /**
 515          *
 516          * @throws IOException
 517          */
 518         private Vector getVariables(PHPStackFrame stack, int scope_id) throws IOException {
 519                 PHPDBGPacket DBGPacket = new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 520                 PHPDBGFrame DBGFrame1 = new PHPDBGFrame(PHPDBGBase.FRAME_EVAL);
 521
 522                 DBGFrame1.addInt(0);
 523                 DBGFrame1.addInt(scope_id);
 524
 525                 DBGPacket.addFrame(DBGFrame1);
 526                 evalRet = "";
 527
 528                 if (proxy.getSocket().isClosed()) {
 529                         return new Vector();
 530                 }
 531                 DBGPacket.sendPacket(os);
 532                 waitResponse(1000);
 533                 flushAllPackets();
 534
 535                 PHPDBGEvalString evalStr = new PHPDBGEvalString(stack, evalRet);
 536                 return evalStr.getVariables();
 537         }
 538
 539         /**
 540          *
 541          * @param logString
 542          */
 543         public void log(String logString) throws IOException, DebugException  {
 544                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 545                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_LOG);
 546                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 547
 548                 rawCounter++;
 549                 DBGFrame1.addInt(rawCounter);                           // ilog
 550                 DBGFrame1.addInt(1);                                            // type
 551                 DBGFrame1.addInt(0);                                            // mod_no
 552                 DBGFrame1.addInt(0);                                            // line_no
 553                 DBGFrame1.addInt(0);                                            // imod_name
 554                 DBGFrame1.addInt(0);                                            // ext_info
 555
 556                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 557                 DBGFrame2.addInt(logString.length() + 1);       // length of rawdata (+ null char)
 558                 DBGFrame2.addString(logString);                         // log string
 559                 DBGFrame2.addChar('\0');                                        // null char
 560
 561                 // Add raw data first
 562                 DBGPacket.addFrame(DBGFrame2);
 563                 // Add command data
 564                 DBGPacket.addFrame(DBGFrame1);
 565
 566                 if (proxy.getSocket ().isClosed ()) {                   // Do we have a socket for DBG communication?
 567                         return;                                                                                         //  No, then leave here
 568                 }
 569
 570                 DBGPacket.sendPacket(os);
 571
 572                 waitResponse(1000);
 573                 flushAllPackets();
 574         }
 575
 576         public synchronized PHPVariable[] evalBlock(PHPStackFrame stack, String evalString) throws IOException, DebugException {
 577                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 578                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_EVAL);
 579                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 580
 581                 rawCounter++;
 582                 DBGFrame1.addInt(rawCounter);                           // istr = raw data ID
 583                 //DBGFrame1.addInt(1);                                          // scope_id = -1 means current location, 0 never used, +1 first depth
 584                 DBGFrame1.addInt(stack.getScopeID());
 585
 586                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 587                 DBGFrame2.addInt(evalString.length() + 1);      // length of rawdata (+ null char)
 588                 DBGFrame2.addString(evalString);                        // eval block
 589                 DBGFrame2.addChar('\0');                                        // null char
 590
 591                 // Add raw data first
 592                 DBGPacket.addFrame(DBGFrame2);
 593                 // Add command data
 594                 DBGPacket.addFrame(DBGFrame1);
 595
 596                 if (proxy.getSocket().isClosed()) {                     // Do we have a socket for DBG communication?
 597                         return null;                                                    //  No, then leave here
 598                 }
 599                 DBGPacket.sendPacket(os);
 600
 601                 waitResponse(1000);
 602                 flushAllPackets();
 603
 604                 PHPDBGEvalString evalStr=new PHPDBGEvalString(stack,evalRet);
 605
 606                 return evalStr.getVars();
 607         }
 608
 609         /**
 610          * Read and process everthing we got from DBG
 611          */
 612         public void flushAllPackets () throws IOException {
 613                 while (readResponse() != 0);
 614         }
 615
 616         /**
 617          * Get the modules name by its number
 618          *
 619          * @param modNo The number (id) of the module
 620          * @return      The name of the module
 621          */
 622         public String getModByNo (int modNo) {
 623                 int             i;
 624                 PHPDBGMod       dbg_mod;
 625
 626                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 627                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 628
 629                         if (dbg_mod.getNo () == modNo) {                            // Is the module from the array the module we want?
 630                                 return dbg_mod.getName ();                              //  Yes, return the name of the module
 631                         }
 632                 }
 633
 634                 return "";                                                      // If nothing was found return emtpy string
 635         }
 636
 637         /**
 638          *
 639          * @param  modName The name of the module for which we want the ID
 640          * @return
 641          * - The ID of the module
 642          * - -1 if nothing was found
 643          */
 644         private int getModByName (String modName) {
 645                 int             i;
 646                 PHPDBGMod       dbg_mod;
 647
 648                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 649                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 650
 651                         if (dbg_mod.getName ().equalsIgnoreCase (modName)) {            // Is the module from the array the module we want?
 652                                 return dbg_mod.getNo ();                                //  Yes, return the name of the module
 653                         }
 654                 }
 655
 656                 return -1;                                                      // If nothing was found return -1
 657         }
 658
 659         /**
 660          * Return the string for the given frame number
 661          *
 662          * @param framesInfo The buffer which is to read
 663          * @param frameNo    The frame number
 664          * @return
 665          */
 666         private String getRawFrameData (char[] framesInfo, int frameNo) {
 667                 int   nextFrame = 0;                                                    // The current read position within the buffer
 668                 int[] dbg_frame = new int[2];                                           // The two frame header numbers
 669
 670                 while (nextFrame < framesInfo.length) {                                 // As long we have something within the buffer
 671                         dbg_frame[0] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame);           // The frame type
 672                         dbg_frame[1] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);       // The frame size
 673
 674                         nextFrame   += 8;                                                   // The current read position
 675
 676                         if (dbg_frame[1] == 0) {                                            // If frame size is 0
 677                                 return "";                                                      //  return an emtpy string
 678                         }
 679
 680                         switch (dbg_frame[0]) {                                                     // Switch for the frame type
 681                                 case PHPDBGBase.FRAME_RAWDATA:                                                  // The only frame type we are interrested in
 682                                         if (frameNo == PHPDBGBase.Char4ToInt (framesInfo, nextFrame)) {         // Is it correct  number of the frame
 683                                                 int toRead;                                                     //
 684
 685                                                 toRead = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);     // The size of the string
 686
 687                                                 if ((int) framesInfo[nextFrame + 8 + toRead - 1] == 0) {                                // Is there a string termination at the end?
 688                                                         return String.copyValueOf (framesInfo, nextFrame + 8, toRead - 1);      // Then copy frame content to String without the \0 and return
 689                                                 }
 690
 691                                                 return String.copyValueOf (framesInfo, nextFrame + 8, toRead);  // Copy frame content to String and return
 692                                         }
 693                                         break;
 694                         }
 695
 696                         nextFrame += dbg_frame[1];                                                                      // Go for the next frame (add the length of the current one)
 697                 }
 698
 699                 return "";                                                                                                                                              // We did not found any FRAM_RAWDATA, so return an emtpy strin
 700         }
 701
 702         /**
 703          * Reset the availability flag for all stackframes in the list.
 704          *
 705          * @param list          The list of old stackframes
 706          */
 707         private void resetAvailability (Vector list) {
 708                 int             i;
 709
 710                 for (i = 0; i < list.size (); i++) {
 711                         ((PHPStackFrame) list.get(i)).setAvailable (false);                                     //
 712                 }
 713         }
 714
 715         /**
 716          * Check whether the new stackframe is in the list of old stackframes.
 717          * Test for identical stackframe (identical means same description and same line number).
 718          *
 719          * @param stackFrameNew The stackframe to check whether he is already within the old stackframe list
 720          * @param list          The list of old stackframes
 721          * @return
 722          *  - true if we have found the identical stackframe within the list
 723          *  - false if we did not find the identical stackframe within the list
 724          */
 725         private boolean isStackFrameInList (PHPStackFrame stackFrameNew, Vector list) {
 726                 int             i;
 727                 PHPStackFrame   stackFrameOld;
 728
 729                 for (i = 0; i < list.size (); i++) {
 730                         stackFrameOld = (PHPStackFrame) list.get (i);                                           //
 731
 732                         if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ()) &&
 733                                 stackFrameNew.getLineNumber () == stackFrameOld.getLineNumber ()) {     // Did we find the sent stackframe within the list of old stackframes?
 734                                 stackFrameOld.setAvailable (true);                                      // We found the new stackframe in the list of old stack frames
 735                 stackFrameOld.setIndex (stackFrameNew.getIndex ());
 736                 stackFrameOld.setScopeID(stackFrameNew.getScopeID());
 737                                 return true;                                                            // The stackframe was found in the list
 738                         }
 739                 }
 740
 741                 return false;
 742         }
 743
 744         /**
 745          * Check whether the new stackframe is in the list of old stackframes.
 746          * Test for exact stackframe (exact means same description and same line number).
 747          *
 748          * @param stackFrameNew The stackframe to check whether he is already within the old stackframe list
 749          * @param list          The list of old stackframes
 750          * @return
 751          *  - true if we have exactly this stackframe within the list
 752          *  - false if we did not find the exact stackframe within the list
 753          */
 754         private void markIdenticalStackFrames (Vector oldList, Vector newList) {
 755                 int             i;
 756                 PHPStackFrame   stackFrameNew;
 757
 758                 resetAvailability (oldList);                                                    // Reset the availability flag of the old stack frames
 759                 resetAvailability (newList);                                                    // Reset the availability flag of the old stack frames
 760
 761                 for (i = 0; i < newList.size (); i++) {                                                                                 // For all stackList entries
 762                         stackFrameNew = (PHPStackFrame) newList.get (i);
 763
 764                         if (isStackFrameInList (stackFrameNew, oldList)) {                          // Is this stackframe in the list
 765                                 stackFrameNew.setAvailable (true);                                                                              //
 766                                                                                                                                                                                 //
 767                                 break;
 768                         }
 769                 }
 770         }
 771
 772         /**
 773          *
 774          * The stackList contains the currently read stackframes which were sent
 775          * from DBG. The DBG interface holds a list of the active stack frames.
 776          * This method replicates the 'static' stackframe list with the DBG stackframe list
 777          * Replication is done in the following way:
 778          * <ul>
 779          * <li> It looks for new stackframes within the DBG stackframe list and
 780          *      adds them to the 'static' list.
 781          * <li> It looks for stackframes within the 'static' list, and removes them
 782          *              from the 'static' list in case they do not appear within the DBG list.
 783          * <li> It looks for stackframes which are already existent and replicates the
 784          *              line number and the index number.
 785          * <li> At the end, the 'static' stackframe list has to be sorted by the stackframes
 786          *              index numbers.
 787          * </ul>
 788          *
 789          * Removes the unused stackframes from the list, or adds stackframes which
 790          * are not yet in the list.
 791          *
 792          *
 793          * @param stackList
 794          */
 795         private void updateStackFrameList (Vector stackList) {
 796                 int                     i;
 797                 int             n;
 798                 PHPStackFrame   stackFrameNew;
 799                 PHPStackFrame   stackFrameOld;
 800                 PHPStackFrame[] newStackList;
 801
 802                 markIdenticalStackFrames (stackListOld, stackList);                     // Check whether the newly send stack frames can be found in the list
 803                                                                                                                                                                 // of old stack frames
 804
 805                 for (i = 0; i < stackList.size (); i++) {                                                               // For all stackList entries
 806                         stackFrameNew = (PHPStackFrame) stackList.get(i);
 807
 808                         for (n = 0; n < stackListOld.size (); n++) {                                    // For all StackFrames in the StackFrame list
 809                                 stackFrameOld = (PHPStackFrame) stackListOld.get (n);                   //
 810
 811                                 if (stackFrameOld.isAvailable ()) {                             // If this stack frame was already found in the new list skip it
 812                                         continue;
 813                                 }
 814
 815                                 if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ())) {// Did we find the sent stackframe within the list of old stackframes?
 816                                         stackFrameOld.setLineNumber (stackFrameNew.getLineNumber ());
 817                                         stackFrameOld.setIndex (stackFrameNew.getIndex ());
 818                                         stackFrameOld.setScopeID(stackFrameNew.getScopeID());
 819
 820                                         stackFrameOld.setAvailable (true);                                                      // And mark this stack frame as available
 821                                         stackFrameNew.setAvailable (true);                                                      // And mark this stack frame as available
 822
 823                                         break;                                                                  //  Yes, then break;
 824                                 }
 825                         }
 826
 827                         if (!stackFrameNew.isAvailable ()) {                                // Did not find the new stackframe within the list?
 828                                  stackFrameNew.setAvailable (true);                                                             // Mark the stack frame as available and
 829                                  stackListOld.add (stackFrameNew);                              //  then add the new stackframe
 830                         }
 831                 }
 832
 833                 // And now for removing unused stackframes from list
 834
 835                 for (n = 0; n < stackListOld.size (); n++) {                                            // For all StackFrames in the StackFrame list
 836                         stackFrameOld = (PHPStackFrame) stackListOld.get (n);                           //
 837
 838                         i = 0;
 839                         if (!stackFrameOld.isAvailable ()) {
 840                                 i = stackList.size ();
 841                         }
 842
 843                         if (i == stackList.size ()) {                                           // Did not find the old stackframe within the list of new ones
 844                                  stackListOld.remove (n);                                       //  then remove the old stackframe from list
 845                                  n -= 1;                                                        // Adjust the stack list index
 846                         }
 847                 }
 848
 849                 Collections.sort (stackListOld);                                                                                // Sort the 'static' stackframe list by the stackframe index numbers.
 850                                                                                                                                                                 //
 851                 newStackList = new PHPStackFrame[stackListOld.size ()];
 852                 newStackList = (PHPStackFrame[]) stackListOld.toArray (newStackList);
 853                 DBGStackList = newStackList;
 854         }
 855
 856     /**
 857      * Read the response from DBG and process the frame
 858      *
 859          * @return
 860          * - The received command
 861          * - or 0 if something was wrong
 862      */
 863         public int readResponse () throws IOException {
 864         int     bytesToRead            = 0;                         // The number of byte to read for the current DBG block
 865         int     nextFrame              = 0;                         // The current read position within entirePack
 866         int     i                      = 0;
 867         int     cmdReceived            = 0;
 868         int     stackIndex             = 0;
 869         boolean errorStack             = false;
 870         char[]  dbg_header_struct_read = new char[16];              // The buffer for the first 16 bytes of a block
 871         int[]   dbg_header_struct      = new int[4];                // The first four numbers (long) of a block
 872         int[]   dbg_bpl_tmp            = new int[10];
 873         int[]   dbg_frame              = new int[2];
 874         int[]   dbg_eval_tmp           = new int[3];
 875         int[]   dbg_src_tree_tmp       = new int[4];                //
 876         int[]   dbg_error_tmp          = new int[2];
 877         Vector  rawList                = new Vector();
 878         Vector  stackList              = new Vector();              // Intermediate stacklist which is build up in FRAME_STACK frame
 879
 880         rawList.clear ();
 881         stackList.clear ();
 882
 883                 // Read from input
 884         while (readInput (dbg_header_struct_read, 16) != 0) {                               // Read 16 byte from input stream
 885                         dbg_header_struct[0] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 0);               // Debug sync header
 886             dbg_header_struct[1] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 4);           // Command
 887             dbg_header_struct[2] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 8);       //
 888             dbg_header_struct[3] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 12);      // Bytes within this block
 889
 890             if (dbg_header_struct[0] != 0x5953) {                                           // Check DBG sync bytes
 891                 return 0;                                                                   // Wrong header
 892             }
 893
 894             cmdReceived = dbg_header_struct[1];                                             // Get the command
 895             setLastCmd (cmdReceived);                                                                                                           // Store the info about the current command
 896             bytesToRead = dbg_header_struct[3];                                                                                         // Get the number of bytes to read for this block
 897
 898                         //System.out.println("Response Received: " + cmdReceived);
 899                         char[] entirePack = new char[bytesToRead];                                      // Store the block data into buffer 'entirePack'
 900
 901             if (bytesToRead > 0) {                                                          // If there is something within the frame
 902                 if (readInput (entirePack, bytesToRead) < bytesToRead) {                    // Read the frame into the buffer
 903                     return 0;                                                               // We did not read enough bytes, error
 904                 }
 905                         }
 906
 907                         nextFrame = 0;                                                                  // Start with the first frame
 908
 909                         while (nextFrame < bytesToRead) {                                               // As long as we have something within this block
 910                                 dbg_frame[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame);                           // The name of the frame
 911                                 dbg_frame[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);               // The size of the frame
 912                                 nextFrame   += 8;                                                           // The next read position
 913
 914                                 if (dbg_frame[1] == 0) {                                                    // Something within the frame?
 915                                         return 0;                                                               //  Nothing to read, error
 916                                 }
 917
 918                                 switch (dbg_frame[0]) {
 919                                         case PHPDBGBase.FRAME_STACK:
 920                                                 int[] dbg_stack_new = new int[4];                                       //
 921
 922                                                 dbg_stack_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);   // Source line number
 923                                                 dbg_stack_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);   // Module number
 924                                                 dbg_stack_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);   // Scope id
 925                                                 dbg_stack_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);  // ID of description string
 926
 927                                                 if ((dbg_stack_new[1] != 0) && !errorStack) {
 928                                                         PHPStackFrame newStack;
 929
 930                                                         stackIndex++;
 931                                                         newStack = new PHPStackFrame (null,                                 // The thread
 932                                                                                       getModByNo (dbg_stack_new[1]),        // The name of the module (file)
 933                                                                                       dbg_stack_new[0],                     // The source line number
 934                                                                                                                   stackIndex,
 935                                                                                                                   getRawFrameData (entirePack,          // Get the string from this packet
 936                                                                                                                                    dbg_stack_new[3]),   // The frame ID for which we want the string
 937                                                                                                                   dbg_stack_new[1],                                     // The module number
 938                                                                                                                   dbg_stack_new[2]);
 939                                                         stackList.add (newStack);
 940                                                 }
 941
 942                                                 errorStack = false;
 943                                                 break;
 944
 945                                         case PHPDBGBase.FRAME_SOURCE:                                                   // Nothing to be done here
 946                                                 break;                                                                      // TODO: what's with that frame? Something interesting
 947
 948                                         case PHPDBGBase.FRAME_SRC_TREE:                                                 //
 949                                                 dbg_src_tree_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);        // The parent module number
 950                                                 dbg_src_tree_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);        // The parent line number (not used)
 951                                                 dbg_src_tree_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);        // The module number
 952                                                 dbg_src_tree_tmp[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);       // The filename number
 953
 954                                                 if (getModByNo (dbg_src_tree_tmp[2]).equals ("")) {
 955                                                         String fileName;
 956
 957                                                         fileName = new String (getRawFrameData (entirePack, dbg_src_tree_tmp[3]));      // Get the filename
 958
 959                                                         if (dbg_src_tree_tmp[2] != 0) {                                             // If there is a module number
 960                                                                 PHPDBGMod modNew;
 961
 962                                                                 modNew = new PHPDBGMod (dbg_src_tree_tmp[2], fileName);                 // Create a module object
 963
 964                                                                 DBGMods.add (modNew);                                                   // And store it to array
 965                                                         }
 966                                                 }
 967                                                 break;
 968
 969                                         case PHPDBGBase.FRAME_RAWDATA:                                                      // Nothing to be done here
 970                                                 break;                                                                          //  FRAME_RAWDATA are processed within getRawFrameData
 971
 972                                         case PHPDBGBase.FRAME_ERROR:                                                                                                            // An error frame
 973                                                 errorStack       = true;                                                                                                                // Yes, we have an error stack
 974                                                 dbg_error_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                   // Error type
 975                                                 dbg_error_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                   // Error message ID
 976
 977                                                 String error = "\n";                                                            //
 978
 979                                                 switch (dbg_error_tmp[0]) {                                                                                                             // Switch on error type
 980                                                         case PHPDBGBase.E_ERROR:                        error += "[Error]";                     break;
 981                                                         case PHPDBGBase.E_WARNING:                      error += "[Warning]";                   break;
 982                                                         case PHPDBGBase.E_PARSE:                        error += "[Parse Error]";               break;
 983                                                         case PHPDBGBase.E_NOTICE:                       error += "[Notice]";                    break;
 984                                                         case PHPDBGBase.E_CORE_ERROR:           error += "[Core Error]";                break;
 985                                                         case PHPDBGBase.E_CORE_WARNING:         error += "[Core Warning]";              break;
 986                                                         case PHPDBGBase.E_COMPILE_ERROR:        error += "[Compile Error]";             break;
 987                                                         case PHPDBGBase.E_COMPILE_WARNING:      error += "[Compile Warning]";   break;
 988                                                         case PHPDBGBase.E_USER_ERROR:           error += "[User Error]";                break;
 989                                                         case PHPDBGBase.E_USER_WARNING:         error += "[User Warning]";              break;
 990                                                         case PHPDBGBase.E_USER_NOTICE:          error += "[User Notice]";               break;
 991                                                         default:                                                        error += "[Unexpected Error]";  break;
 992                                                 }
 993
 994                                                 error += ": ";
 995                                                 error += new String (getRawFrameData (entirePack, dbg_error_tmp[1]));                   // Add the error string for this error message ID
 996                                                 error += "\n";                                                                  // Append a CR
 997
 998                                                 PHPDebugCorePlugin.log (new DebugException (new Status (IStatus.WARNING,
 999                                                                                                         PHPDebugCorePlugin.PLUGIN_ID,
1000                                                                                                                                                                 IStatus.OK,
1001                                                                                                                                                                 error, null)));
1002
1003                                                 // To print errors on the console, I must execute a code in the
1004                                                 // php context, that write the stderr... I didn't found a better way
1005                                                 // TODO: Find a better way????
1006
1007 //                                              String codeExec= "";
1008 //                                              codeExec= "fwrite(fopen('php://stderr', 'w'),\\\"" + error + "\\\");";
1009 //                                              try {
1010 //                                                      evalBlock("eval(\"" + codeExec + "\");");
1011 //                                              } catch (DebugException e) {
1012 //                                                      PHPDebugCorePlugin.log(e);
1013 //                                              }
1014 //
1015                                                 if (!stopOnError) {                                                             // Is always false (Did not see where this is set to true!?)
1016                                                         if (lastCommand.equals (PHPDBGBase.DBGA_CONTINUE)) {                        // If last command for PHP was a 'continue',
1017                                                                 continueExecution ();                                                   //  send continue again
1018                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPINTO)) {                 // If last command for PHP was a 'step into',
1019                                                                 stepInto ();                                                            //  send 'step into' again
1020                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOUT)) {                  // If last command for PHP was a 'step out',
1021                                                                 stepOut ();                                                             //  send 'step out' again
1022                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOVER)) {                 // If last command for PHP was a 'step over',
1023                                                                 stepOver ();                                                            //  send 'step over' again
1024                                                         }
1025                                                 }
1026                                                 break;
1027
1028                                         case PHPDBGBase.FRAME_EVAL:
1029                                                 String evalString;
1030
1031                                                 evalString      = new String ("");
1032                                                 dbg_eval_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                    // istr
1033                                                 dbg_eval_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                    // iresult
1034                                                 dbg_eval_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);                    // ierror
1035
1036                                                 evalRet                 = getRawFrameData (entirePack, dbg_eval_tmp[1]);                //
1037                                                 evalString              = getRawFrameData (entirePack, dbg_eval_tmp[0]);                //
1038                                                 //serGlobals            = evalRet;                                                      //
1039                                                 break;
1040
1041                                         case PHPDBGBase.FRAME_BPS:                                                          //
1042                                                 break;                                                                          //
1043
1044                                         case PHPDBGBase.FRAME_BPL:
1045                                                 int[] dbg_bpl_new;
1046
1047                                                 dbg_bpl_new        = new int[10];
1048                                                 dbg_bpl_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);
1049                                                 dbg_bpl_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);
1050                                                 dbg_bpl_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);
1051                                                 dbg_bpl_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);
1052                                                 dbg_bpl_new[4] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 16);
1053                                                 dbg_bpl_new[5] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 20);
1054                                                 dbg_bpl_new[6] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 24);
1055                                                 dbg_bpl_new[7] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 28);
1056                                                 dbg_bpl_new[8] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 32);
1057                                                 dbg_bpl_new[9] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 36);
1058
1059                                                 // look if breakpoint already exists in vector
1060                                                 for (i = 0; i < DBGBPList.size (); i++) {
1061                                                         dbg_bpl_tmp = (int[]) DBGBPList.get (i);
1062
1063                                                         if (dbg_bpl_tmp[8] == dbg_bpl_new[8]) {
1064                                                                 DBGBPList.remove (i);
1065
1066                                                                 break;
1067                                                         }
1068                                                 }
1069
1070                                                 // add breakpoint to vector
1071                                                 DBGBPList.add (dbg_bpl_new);
1072                                                 copyToLastBP (dbg_bpl_new);
1073
1074                                                 // mod no returned?
1075                                                 if (getModByNo (dbg_bpl_new[0]).equals ("")) {
1076                                                         String fileName;
1077
1078                                                         fileName = new String (getRawFrameData (entirePack, dbg_bpl_new[2]));
1079
1080                                                         if (dbg_bpl_new[0] != 0) {
1081                                                                 PHPDBGMod modNew;
1082
1083                                                                 modNew = new PHPDBGMod (dbg_bpl_new[0], fileName);
1084
1085                                                                 DBGMods.add (modNew);
1086                                                         }
1087                                                 }
1088                                                 break;
1089
1090                                         case PHPDBGBase.FRAME_VER:
1091                                                 break;
1092
1093                                         case PHPDBGBase.FRAME_SID:
1094                                                 sid = PHPDBGBase.Char4ToInt(entirePack, nextFrame + 0);
1095                                                 break;
1096
1097                                         case PHPDBGBase.FRAME_SRCLINESINFO:
1098                                                 break;
1099
1100                                         case PHPDBGBase.FRAME_SRCCTXINFO:
1101                                                 break;
1102
1103                                         case PHPDBGBase.FRAME_LOG:
1104                                                 break;
1105
1106                                         case PHPDBGBase.FRAME_PROF:
1107                                                 break;
1108
1109                                         case PHPDBGBase.FRAME_PROF_C:
1110                                                 break;
1111
1112                                         case PHPDBGBase.FRAME_SET_OPT:
1113                                                 break;
1114                                 }
1115
1116                                 nextFrame += dbg_frame[1];                                                      // go to next frame
1117                         }
1118
1119                         // Now process command
1120                         switch(cmdReceived) {
1121                                 case PHPDBGBase.DBGC_REPLY:
1122                                         break;
1123
1124                                 case PHPDBGBase.DBGC_STARTUP:
1125                                         break;
1126
1127                                 case PHPDBGBase.DBGC_END:
1128                                         sessionEnded = true;
1129                                         this.proxy.setTerminated();
1130                                         break;
1131
1132                                 case PHPDBGBase.DBGC_BREAKPOINT:
1133                                         BPUnderHit   = getBPUnderHit ();
1134                                         updateStackFrameList (stackList);
1135                                         break;
1136
1137                                 case PHPDBGBase.DBGC_STEPINTO_DONE:
1138                                 case PHPDBGBase.DBGC_STEPOVER_DONE:
1139                                 case PHPDBGBase.DBGC_STEPOUT_DONE:
1140                                 case PHPDBGBase.DBGC_EMBEDDED_BREAK:
1141                                 case PHPDBGBase.DBGC_PAUSE:
1142                                         BPUnderHit   = 1;
1143                                         updateStackFrameList (stackList);
1144                                         break;
1145
1146                                 case PHPDBGBase.DBGC_ERROR:
1147                                         stackList.clear ();
1148                                         updateStackFrameList (stackList);
1149                                         break;
1150
1151                                 case PHPDBGBase.DBGC_LOG:
1152                                         break;
1153
1154                                 case PHPDBGBase.DBGC_SID:
1155                                         break;
1156                         }
1157                 }
1158
1159                 return cmdReceived;                                         // Return the command we received with this block
1160         }
1161
1162     /**
1163      *
1164      */
1165
1166         public PHPStackFrame[] getStackList() {
1167                 return DBGStackList;
1168         }
1169
1170         /**
1171          * Reads from input buffer (response sent from DBG) the given number of chars
1172          * into frame buffer.
1173          *
1174          * @param buffer  The frame buffer where to store the read data from DBG.
1175          * @param bytes   The number of bytes (chars) which are to read from input stream.
1176          * @return        The number of bytes actually read.
1177          */
1178         private int readInput (char[] buffer, int bytes) throws IOException {
1179                 int bytesRead = 0;                                                                                      // Reset the bytes read counter
1180
1181                 for (int i = 0; i < bytes; i++) {                           // For the number of bytes we should read
1182                         if (in.ready ()) {                                                                              // If input stream is ready for reading
1183                                 buffer[i] = (char) (in.read () & 0x00FF);           // Read a char and store only the least significant 8-bits
1184                                 bytesRead++;                                        // Increment the bytes read counter
1185                         }
1186                         else {                                                  // Input stream is not ready
1187                                 break;                                              // Break the loop
1188                         }
1189                 }
1190
1191                 return bytesRead;                                                                                       // Return the number of bytes actually read
1192         }
1193
1194         /**
1195          * PHPProxy could stop the waiting for a response with this method.
1196          *
1197          */
1198         public void setShouldStop () {
1199                 this.shouldStop = true;
1200         }
1201
1202         /**
1203          * @param milliseconds The maximum time in milliseconds we wait for something
1204          *                     to be send from DBG.
1205          * @return             - true if something was received from DBG
1206          *                                         - false if nothing was send from DBG within the given time
1207          *
1208          */
1209         public boolean waitResponse (long milliseconds) throws IOException {
1210                 long timeout;
1211
1212                 timeout = System.currentTimeMillis () + milliseconds;           // Calculate the system time till we wait.
1213
1214                 while (System.currentTimeMillis () < timeout) {             // Is waiting time running out?
1215                         if (in.ready () || shouldStop) {                        //  No, so did we get something or should we stop now
1216                                 break;                                              //   Yes, break the waiting
1217                         }
1218                 }
1219
1220                 return in.ready ();                                         // true if we got something from DBG
1221         }
1222 }