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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.Collections;
  18 import java.util.Vector;
  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.PHPValue;
  23 import net.sourceforge.phpdt.internal.debug.core.model.PHPVariable;
  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         public boolean                  sessionEnded = false;
  35         public int                              sessType = -1;
  36         public int                              BPUnderHit = 0;
  37         public String                           sessID = new String();
  38
  39         private int[]                           LastBPRead = new int[10];
  40         private Vector                  DBGBPList = new Vector();
  41         private Vector                  DBGVarList = new Vector();
  42         private PHPStackFrame[]         DBGStackList = new PHPStackFrame[0];
  43         private Vector                  DBGMods = new Vector();                         // The module names and their numbers
  44         private Vector                  stackListOld = new Vector();
  45         private BufferedReader  in;
  46         private OutputStream            os;                                                             // The stream which goes to DBG
  47         private boolean                         shouldStop = false;
  48         private String                  evalRet = new String("");
  49         private int                             rawCounter = 1000;                                      // An rawData frame ID counter
  50         private PHPDBGProxy             proxy = null;
  51         private int                             lastCmd = -1;
  52         private int                             sid = 0;
  53         private boolean                         stopOnError = false;
  54         private char[]                  lastCommand = new char[4];
  55
  56         private static final String GlobalVariablesTitle = PHPDebugCorePlugin
  57                         .getResourceString("VariablesView.GlobalVariables.title");
  58
  59         /**
  60          * @param in    The input stream (communication from DBG).
  61          * @param os    The output stream (communication to DBG).
  62          * @param proxy The proxy to which this interface belongs.
  63          */
  64         public PHPDBGInterface (BufferedReader in, OutputStream os, PHPDBGProxy proxy) {
  65                 DBGBPList.clear ();
  66
  67                 this.in         = in;
  68                 this.os         = os;
  69                 this.proxy      = proxy;
  70         }
  71
  72         /**
  73          *
  74          * @param mod_name  The module (source file) to which we add the breakpoint.
  75          * @param line      The line where the breakpoint is set.
  76          * @param hitCount  The number of hit counts before suspend.
  77          * @param condition The break condition
  78          * @return          Breakpoint ID ???.
  79          */
  80         public int addBreakpoint (String mod_name, int line, int hitCount, String condition) throws IOException {
  81                 return setBreakpoint (mod_name, condition, line, PHPDBGBase.BPS_ENABLED + PHPDBGBase.BPS_UNRESOLVED, 0, hitCount, 0, 0, 0);
  82         }
  83
  84         /**
  85          *
  86          * @param mod_name The module (source file) to which we add the breakpoint.
  87          * @param line     The line where the breakpoint is set.
  88          * @param bpNo     The breakpoint ID ???.
  89          */
  90         public void removeBreakpoint (String mod_name, int line, int bpNo) throws IOException {
  91                 setBreakpoint (mod_name, "", line, PHPDBGBase.BPS_DISABLED, 0, 0, 0, bpNo, 0);
  92         }
  93
  94         /**
  95          * Is this method used anywhere?
  96          *
  97          */
  98         public void requestDBGVersion () throws IOException {
  99                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 100                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 101
 102                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 103                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_VER);         // We want the version of DBG
 104
 105                 DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 106
 107                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 108                         return;                                                 //  No
 109                 }
 110
 111                 DBGPacket.sendPacket (os);                                                                      // Send the request to DBG
 112         }
 113
 114         /**
 115          * Called by the proxy
 116          *
 117          */
 118         public void getSourceTree () throws IOException {
 119                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 120                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 121
 122                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 123                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_SRC_TREE);        // We want a source tree from DBG
 124
 125                 DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 126
 127                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 128                         return;                                                                                                 //  No
 129                 }
 130
 131                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 132
 133                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 134                 flushAllPackets ();                                                                             // Read and process the response from DBG
 135         }
 136
 137         /**
 138          * Is this method called from anywhere?
 139          *
 140          * @param modName The modul (filename).
 141          */
 142         public void addDBGModName (String modName) throws IOException {
 143                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 144                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 145
 146                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 147                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);     // We want Module name from DBG
 148
 149                 rawCounter++;                                               // Increment the rawData ID counter
 150                 DBGFrame.addInt (rawCounter);                                                           // FRAME_RAWDATA ID
 151                 DBGFrame.addInt (modName.length () + 1);                                        // The length of rawdata string (incl. null char termination)
 152                 DBGFrame.addString (modName);                                                           // The file name (module name)
 153                 DBGFrame.addChar ('\0');                                                                        // Add the C-String null termination
 154
 155                 DBGPacket.addFrame (DBGFrame);
 156
 157                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 158                         return;                                                                                                 //  No
 159                 }
 160
 161                 DBGPacket.sendPacket (os);
 162         }
 163
 164         /**
 165          * This method is called for adding or removing breakpoints.
 166          *
 167          * @param mod_name      The module name (file name).
 168          * @param condition     Info about the condition when to break (not used at the moment).
 169          * @param line          The breakpoints line.
 170          * @param state         Info whether this breakpoint has to be dis- or enabled.
 171          * @param istep         Always 0.
 172          * @param hitcount      Always 0.
 173          * @param skiphits      Always 0.
 174          * @param bpno          The breakpoint ID.
 175          * @param isunderhit    ???
 176          * @return
 177          */
 178         private int setBreakpoint (String mod_name, String condition, int line, int state, int istemp, int hitcount, int skiphits, int bpno, int isunderhit) throws IOException {
 179                 PHPDBGPacket    DBGPacket;
 180                 PHPDBGFrame     DBGFrame1;
 181                 PHPDBGFrame     DBGFrame2;
 182                 PHPDBGFrame             DBGFrame3;
 183                 int                     modNo;
 184
 185                 DBGPacket       = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);
 186                 DBGFrame1       = new PHPDBGFrame (PHPDBGBase.FRAME_BPS);
 187                 DBGFrame2       = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);
 188                 DBGFrame3       = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);
 189
 190                 modNo           = getModByName (mod_name);                                              // Get the module ID by name
 191
 192                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 193                         DBGFrame1.addInt (modNo);                                                               // Add the module ID to frame 1
 194                 } else {
 195                         DBGFrame1.addInt (0);                                                                   // mod number (0 use file name)
 196                 }
 197
 198                 DBGFrame1.addInt (line);                                                                        // line number
 199
 200                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 201                         DBGFrame1.addInt (0);                                                                   // use mod number
 202                 } else {
 203                         rawCounter++;
 204                         DBGFrame1.addInt (rawCounter);                                                  // ID of FRAME_RAWDATA to send file name
 205                 }
 206
 207                 if (modNo < 0) {                                            // Did we find a module ID for the module name?
 208                         DBGFrame2.addInt (rawCounter);                                      // FRAME_RAWDATA ID
 209                         DBGFrame2.addInt (mod_name.length() + 1);                   // length of rawdata (+ null char)
 210                         DBGFrame2.addString (mod_name);                                     // file name
 211                         DBGFrame2.addChar ('\0');                                                   // null char
 212
 213                         DBGPacket.addFrame (DBGFrame2);                         // First add file name data
 214                 }
 215
 216                 DBGFrame1.addInt (state);                                       // state BPS_*
 217                 DBGFrame1.addInt (istemp);                                      // istemp
 218                 DBGFrame1.addInt (0);                                               // hit count; this is not supported as one might think
 219                 DBGFrame1.addInt (hitcount);                                // skip hits is what we think is hit count.
 220
 221                 if (!condition.equals ("")) {                                                           // Do we have a condition for breakpoint
 222                         rawCounter++;                                                                                   // Set to new ID
 223                         DBGFrame1.addInt (rawCounter);                          // ID of condition
 224
 225                         DBGFrame3.addInt (rawCounter);                                      // FRAME_RAWDATA ID
 226                         DBGFrame3.addInt (condition.length() + 1);                  // length of rawdata (+ null char)
 227                         DBGFrame3.addString (condition);                                        // The break condition
 228                         DBGFrame3.addChar ('\0');                                                   // null char
 229
 230                         DBGPacket.addFrame (DBGFrame3);                         // First add break condition
 231                 }
 232                 else {
 233                         DBGFrame1.addInt (0);                                           // ID of condition is 0, because there is no condition
 234                 }
 235
 236                 DBGFrame1.addInt (bpno);                                            // breakpoint number
 237                 DBGFrame1.addInt (isunderhit);                                  // is under hit
 238
 239                 DBGPacket.addFrame (DBGFrame1);                                                         // Second add command data
 240
 241                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 242                         return 0;                                               //  No
 243                 }
 244
 245                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 246
 247                 clearLastBP ();
 248
 249                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 250                 flushAllPackets ();                                         // Read and process the response from DBG
 251
 252                 return LastBPRead[8];                                                                           // Return what ???
 253         }
 254
 255         /**
 256          *
 257          */
 258         private void clearLastBP () {
 259                 int i;
 260
 261                 for (i = 0; i < LastBPRead.length; i++) {
 262                         LastBPRead[i] = 0;
 263                 }
 264         }
 265
 266         /**
 267          *
 268          */
 269         private void copyToLastBP (int[] BPBody) {
 270                 int i;
 271
 272                 for (i = 0; i < LastBPRead.length; i++) {
 273                         LastBPRead[i] = BPBody[i];
 274                 }
 275         }
 276
 277         /**
 278          *
 279          */
 280         public void continueExecution () throws IOException {
 281                 PHPDBGPacket DBGPacket;
 282
 283                 BPUnderHit = 0;
 284                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_CONTINUE);
 285
 286                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 287                         return;                                                 //  No
 288                 }
 289
 290                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 291
 292                 lastCommand = PHPDBGBase.DBGA_CONTINUE;                     // Store the info about the command we sent
 293         }
 294
 295         /**
 296          *
 297          */
 298         public void pauseExecution () throws IOException {
 299                 PHPDBGPacket DBGPacket;
 300
 301                 DBGPacket = new PHPDBGPacket (PHPDBGBase.IntToChar4 (PHPDBGBase.DBGC_PAUSE));
 302
 303                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 304                          return;                                                //  No
 305                 }
 306
 307                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 308         }
 309
 310         /**
 311          *
 312          */
 313         private int getBPUnderHit () {
 314                 int i;
 315                 int BPUnder             = 0;
 316                 int[] dbg_bpl_body      = new int[10];
 317
 318                 for (i = 0; i < DBGBPList.size (); i++) {                               // look for bp under hit
 319                         dbg_bpl_body = (int[]) DBGBPList.get (i);
 320
 321                         if (dbg_bpl_body[9] == 1) {
 322                                 BPUnder = dbg_bpl_body[8];
 323                         }
 324                 }
 325
 326                 return BPUnder;
 327         }
 328
 329         public int getLastCmd()
 330         {
 331                 return lastCmd;
 332         }
 333
 334         public int getSID()
 335         {
 336           return sid;
 337         }
 338
 339         public void setLastCmd (int cmd)
 340         {
 341                 lastCmd = cmd;
 342         }
 343
 344         /**
 345          *
 346          */
 347         public void stepInto () throws IOException {
 348                 PHPDBGPacket DBGPacket;
 349
 350                 BPUnderHit = 0;
 351                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPINTO);
 352
 353                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 354                         return;                                                 //  No
 355                 }
 356
 357                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 358
 359                 lastCommand = PHPDBGBase.DBGA_STEPINTO;                                         // Store the info about the command we sent
 360         }
 361
 362         /**
 363          *
 364          */
 365         public void stepOver () throws IOException {
 366                 PHPDBGPacket DBGPacket;
 367
 368                 BPUnderHit = 0;
 369                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPOVER);
 370
 371                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 372                         return;                                                 //  No
 373                 }
 374
 375                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 376
 377                 lastCommand = PHPDBGBase.DBGA_STEPOVER;                     // Store the info about the command we sent
 378         }
 379
 380         /**
 381          *
 382          */
 383         public void stepOut () throws IOException {
 384                 PHPDBGPacket DBGPacket;
 385
 386                 BPUnderHit = 0;
 387                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STEPOUT);
 388
 389                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 390                         return;                                                 //  No
 391                 }
 392
 393                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 394
 395                 lastCommand = PHPDBGBase.DBGA_STEPOUT;                      // Store the info about the command we sent
 396         }
 397
 398         /**
 399          *
 400          */
 401         public void stopExecution () throws IOException {
 402                 PHPDBGPacket DBGPacket;
 403
 404                 BPUnderHit = 0;
 405                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_STOP);
 406
 407                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 408                         return;                                                 //  No
 409                 }
 410
 411                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 412         }
 413
 414         /**
 415          * This method is called by the proxy.
 416          * It sends a request to DBG to get the current variables
 417          * with their values. It waits for the response and processes
 418          * the input from DBG.
 419          *
 420          * @param stack The stackframe for which we want the variables.
 421          * @return      The array of variables
 422          */
 423         public synchronized Vector getVariables(PHPStackFrame stack) throws IOException, DebugException {
 424                 if (DBGStackList.length == 0) {
 425                         DBGVarList.clear();
 426                         return DBGVarList;
 427                 }
 428
 429                 // get global variables (and assign them to 'main()' stackframe)
 430                 Vector globalList = getVariables(DBGStackList[DBGStackList.length - 1], PHPDBGBase.GLOBAL_SCOPE_ID);
 431                 if (!globalList.isEmpty()) {
 432                         // remove unresolved '$this=?' variable
 433                         removeUnresolvedThisVar(globalList);
 434
 435                         PHPVariable var = (PHPVariable) globalList.get(0);
 436                         var.setName(GlobalVariablesTitle);
 437                         var.setModifiable(false);
 438                 }
 439
 440                 int scopeID = stack.getScopeID();
 441                 if (!globalList.isEmpty()
 442                                 && ((DBGStackList.length == 1)
 443                                                 || (scopeID == PHPDBGBase.CURLOC_SCOPE_ID + 1))) {
 444                         // 'main()' stackframe
 445                         PHPVariable var = (PHPVariable) globalList.get(0);
 446                         PHPValue val = (PHPValue) var.getValue();
 447                         DBGVarList = val.getChildVariables();
 448                         return DBGVarList;
 449
 450                 } else if (scopeID == PHPDBGBase.CURLOC_SCOPE_ID) {
 451                         // current stackframe
 452                         DBGVarList = getVariables(stack, PHPDBGBase.CURLOC_SCOPE_ID);
 453
 454                 } else {
 455                         // back-trace stackframe
 456                         //DBGVarList = getVariables(stack, scopeID);
 457                         //removeUnresolvedThisVar(DBGVarList);
 458                         // DBG 2.15.5 causes Application Error (on win32) in *some* cases.
 459                         DBGVarList.clear();
 460                 }
 461
 462                 if (DBGVarList.size() > 0) {                                                            // Did we get back variables?
 463                         PHPVariable var = (PHPVariable) DBGVarList.get(0);              // Yes, then get the first PHPVariable
 464                         PHPValue    val = (PHPValue) var.getValue();                    // Get the value
 465
 466                         if (var.getName().equals("")) {                                                 // Is the root node an empty node (usually it is)
 467                                 DBGVarList = val.getChildVariables();                           // Then remove the empty node.
 468                                                                                                                                         // With removing the empty root node, it wouldn't be necessary to
 469                                                                                                                                         // set the name to an empty string. So the code below is just for
 470                                                                                                                                         // info or in case the users want to have the empty root node.
 471
 472                                                                                                                                         // The eclipse variable view cannot handle Variables which have an empty name
 473                                                                                                                                         // when it comes to variable tree restore operation. Without a name, no restore!
 474                                 //var.setName (" ");                                                            // Give a name to the variable root node. Even if it is only a space :-)
 475                         }                                                                                                               // TO DO the best would be to remove the empty root node, but this would
 476                                                                                                                                         // require a understanding and reworking of the PHPDBGEvalstring class.
 477                 }
 478
 479                 if (!globalList.isEmpty()) {
 480                         DBGVarList.add(globalList.get(0));
 481                 }
 482
 483                 return DBGVarList;                                                                                      // Return the variables as list
 484         }
 485
 486         /**
 487          *
 488          */
 489         private Vector getVariables(PHPStackFrame stack, int scope_id) throws IOException {
 490                 PHPDBGPacket DBGPacket = new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 491                 PHPDBGFrame DBGFrame1 = new PHPDBGFrame(PHPDBGBase.FRAME_EVAL);
 492
 493                 DBGFrame1.addInt(0);
 494                 DBGFrame1.addInt(scope_id);
 495
 496                 DBGPacket.addFrame(DBGFrame1);
 497                 evalRet = "";
 498
 499                 if (proxy.getSocket().isClosed()) {
 500                         return new Vector();
 501                 }
 502                 DBGPacket.sendPacket(os);
 503
 504                 waitResponse(1000);
 505                 flushAllPackets();
 506
 507                 PHPDBGEvalString evalStr = new PHPDBGEvalString(stack, evalRet);
 508                 return evalStr.getVariables();
 509         }
 510
 511         /**
 512          * Remove unresolved $this variable
 513          *
 514          * DBG returns $this=? in function's or intermediate stackframes.
 515          * (In current method's stackframe, DBG returns $this=classname)
 516          *
 517          * @param varList
 518          */
 519         private void removeUnresolvedThisVar(Vector varList) {
 520                 if (varList.size() > 0) {
 521                         PHPVariable var = (PHPVariable) varList.get(0);
 522                         PHPValue val = (PHPValue) var.getValue();
 523                         Vector workList = val.getChildVariables();
 524                         for (int i = 0; i < workList.size(); i++) {
 525                                 PHPVariable workvar = (PHPVariable) workList.get(i);
 526                                 if (workvar.getName().equals("$this")) {
 527                                         String workval = ((PHPValue) workvar.getValue()).getValueString();
 528                                         if (workval.equals("?") || workval.equals("NULL")) {
 529                                                 workList.remove(i);
 530                                         }
 531                                         break;
 532                                 }
 533                         }
 534                 }
 535         }
 536
 537         /**
 538          *
 539          * @param logString
 540          */
 541         public void log(String logString) throws IOException, DebugException  {
 542                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 543                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_LOG);
 544                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 545
 546                 rawCounter++;
 547                 DBGFrame1.addInt(rawCounter);                           // ilog
 548                 DBGFrame1.addInt(1);                                            // type
 549                 DBGFrame1.addInt(0);                                            // mod_no
 550                 DBGFrame1.addInt(0);                                            // line_no
 551                 DBGFrame1.addInt(0);                                            // imod_name
 552                 DBGFrame1.addInt(0);                                            // ext_info
 553
 554                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 555                 DBGFrame2.addInt(logString.length() + 1);       // length of rawdata (+ null char)
 556                 DBGFrame2.addString(logString);                         // log string
 557                 DBGFrame2.addChar('\0');                                        // null char
 558
 559                 // Add raw data first
 560                 DBGPacket.addFrame(DBGFrame2);
 561                 // Add command data
 562                 DBGPacket.addFrame(DBGFrame1);
 563
 564                 if (proxy.getSocket ().isClosed ()) {                   // Do we have a socket for DBG communication?
 565                         return;                                                                                         //  No, then leave here
 566                 }
 567
 568                 DBGPacket.sendPacket(os);
 569
 570                 waitResponse(1000);
 571                 flushAllPackets();
 572         }
 573
 574         public synchronized PHPVariable[] evalBlock(PHPStackFrame stack, String evalString) throws IOException, DebugException {
 575                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 576                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_EVAL);
 577                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 578
 579                 rawCounter++;
 580                 DBGFrame1.addInt(rawCounter);                           // istr = raw data ID
 581                 //DBGFrame1.addInt(1);                                          // scope_id = -1 means current location, 0 never used, +1 first depth
 582                 int scope_id = stack.getScopeID();
 583                 /* test code : unnecessary
 584                 if (DBGStackList.length == 1 || scope_id == (PHPDBGBase.CURLOC_SCOPE_ID + 1)) {
 585                         scope_id = PHPDBGBase.GLOBAL_SCOPE_ID;
 586                 }
 587                 */
 588                 DBGFrame1.addInt(scope_id);
 589
 590                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 591                 DBGFrame2.addInt(evalString.length() + 1);      // length of rawdata (+ null char)
 592                 DBGFrame2.addString(evalString);                        // eval block
 593                 DBGFrame2.addChar('\0');                                        // null char
 594
 595                 // Add raw data first
 596                 DBGPacket.addFrame(DBGFrame2);
 597                 // Add command data
 598                 DBGPacket.addFrame(DBGFrame1);
 599
 600                 if (proxy.getSocket().isClosed()) {                     // Do we have a socket for DBG communication?
 601                         return null;                                                    //  No, then leave here
 602                 }
 603                 DBGPacket.sendPacket(os);
 604
 605                 waitResponse(1000);
 606                 flushAllPackets();
 607
 608                 PHPDBGEvalString evalStr=new PHPDBGEvalString(stack, evalRet);
 609
 610                 return evalStr.getVars();
 611         }
 612
 613         /**
 614          * Read and process everthing we got from DBG
 615          */
 616         public void flushAllPackets () throws IOException {
 617                 while (readResponse() != 0);
 618         }
 619
 620         /**
 621          * Get the modules name by its number
 622          *
 623          * @param modNo The number (id) of the module
 624          * @return      The name of the module
 625          */
 626         public String getModByNo (int modNo) {
 627                 int             i;
 628                 PHPDBGMod       dbg_mod;
 629
 630                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 631                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 632
 633                         if (dbg_mod.getNo () == modNo) {                            // Is the module from the array the module we want?
 634                                 return dbg_mod.getName ();                              //  Yes, return the name of the module
 635                         }
 636                 }
 637
 638                 return "";                                                      // If nothing was found return emtpy string
 639         }
 640
 641         /**
 642          *
 643          * @param  modName The name of the module for which we want the ID
 644          * @return
 645          * - The ID of the module
 646          * - -1 if nothing was found
 647          */
 648         private int getModByName (String modName) {
 649                 int             i;
 650                 PHPDBGMod       dbg_mod;
 651
 652                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 653                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 654
 655                         if (dbg_mod.getName ().equalsIgnoreCase (modName)) {            // Is the module from the array the module we want?
 656                                 return dbg_mod.getNo ();                                //  Yes, return the name of the module
 657                         }
 658                 }
 659
 660                 return -1;                                                      // If nothing was found return -1
 661         }
 662
 663         /**
 664          * Return the string for the given frame number
 665          *
 666          * @param framesInfo The buffer which is to read
 667          * @param frameNo    The frame number
 668          * @return
 669          */
 670         private String getRawFrameData (char[] framesInfo, int frameNo) {
 671                 int   nextFrame = 0;                                                    // The current read position within the buffer
 672                 int[] dbg_frame = new int[2];                                           // The two frame header numbers
 673
 674                 while (nextFrame < framesInfo.length) {                                 // As long we have something within the buffer
 675                         dbg_frame[0] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame);           // The frame type
 676                         dbg_frame[1] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);       // The frame size
 677
 678                         nextFrame   += 8;                                                   // The current read position
 679
 680                         if (dbg_frame[1] == 0) {                                            // If frame size is 0
 681                                 return "";                                                      //  return an emtpy string
 682                         }
 683
 684                         switch (dbg_frame[0]) {                                                     // Switch for the frame type
 685                                 case PHPDBGBase.FRAME_RAWDATA:                                                  // The only frame type we are interrested in
 686                                         if (frameNo == PHPDBGBase.Char4ToInt (framesInfo, nextFrame)) {         // Is it correct  number of the frame
 687                                                 int toRead;                                                     //
 688
 689                                                 toRead = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);     // The size of the string
 690
 691                                                 if ((int) framesInfo[nextFrame + 8 + toRead - 1] == 0) {                                // Is there a string termination at the end?
 692                                                         return String.copyValueOf (framesInfo, nextFrame + 8, toRead - 1);      // Then copy frame content to String without the \0 and return
 693                                                 }
 694
 695                                                 return String.copyValueOf (framesInfo, nextFrame + 8, toRead);  // Copy frame content to String and return
 696                                         }
 697                                         break;
 698                         }
 699
 700                         nextFrame += dbg_frame[1];                                                                      // Go for the next frame (add the length of the current one)
 701                 }
 702
 703                 return "";                                                                                                                                              // We did not found any FRAM_RAWDATA, so return an emtpy strin
 704         }
 705
 706         /**
 707          * Reset the availability flag for all stackframes in the list.
 708          *
 709          * @param list          The list of old stackframes
 710          */
 711         private void resetAvailability (Vector list) {
 712                 int             i;
 713
 714                 for (i = 0; i < list.size (); i++) {
 715                         ((PHPStackFrame) list.get(i)).setAvailable (false);                                     //
 716                 }
 717         }
 718
 719         /**
 720          * Check whether the new stackframe is in the list of old stackframes.
 721          * Test for identical stackframe (identical means same description and same line number).
 722          *
 723          * @param stackFrameNew The stackframe to check whether he is already within the old stackframe list
 724          * @param list          The list of old stackframes
 725          * @return
 726          *  - true if we have found the identical stackframe within the list
 727          *  - false if we did not find the identical stackframe within the list
 728          */
 729         private boolean isStackFrameInList (PHPStackFrame stackFrameNew, Vector list) {
 730                 int             i;
 731                 PHPStackFrame   stackFrameOld;
 732
 733                 for (i = 0; i < list.size (); i++) {
 734                         stackFrameOld = (PHPStackFrame) list.get (i);                                           //
 735
 736                         if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ()) &&
 737                                 stackFrameNew.getLineNumber () == stackFrameOld.getLineNumber ()) {     // Did we find the sent stackframe within the list of old stackframes?
 738                                 stackFrameOld.setAvailable (true);                                      // We found the new stackframe in the list of old stack frames
 739                 stackFrameOld.setIndex (stackFrameNew.getIndex ());
 740                 stackFrameOld.setScopeID(stackFrameNew.getScopeID());
 741                                 return true;                                                            // The stackframe was found in the list
 742                         }
 743                 }
 744
 745                 return false;
 746         }
 747
 748         /**
 749          * Check whether the new stackframe is in the list of old stackframes.
 750          * Test for exact stackframe (exact means same description and same line number).
 751          *
 752          * @param stackFrameNew The stackframe to check whether he is already within the old stackframe list
 753          * @param list          The list of old stackframes
 754          * @return
 755          *  - true if we have exactly this stackframe within the list
 756          *  - false if we did not find the exact stackframe within the list
 757          */
 758         private void markIdenticalStackFrames (Vector oldList, Vector newList) {
 759                 int             i;
 760                 PHPStackFrame   stackFrameNew;
 761
 762                 resetAvailability (oldList);                                                    // Reset the availability flag of the old stack frames
 763                 resetAvailability (newList);                                                    // Reset the availability flag of the old stack frames
 764
 765                 for (i = 0; i < newList.size (); i++) {                                                                                 // For all stackList entries
 766                         stackFrameNew = (PHPStackFrame) newList.get (i);
 767
 768                         if (isStackFrameInList (stackFrameNew, oldList)) {                          // Is this stackframe in the list
 769                                 stackFrameNew.setAvailable (true);                                                                              //
 770                                                                                                                                                                                 //
 771                                 break;
 772                         }
 773                 }
 774         }
 775
 776         /**
 777          *
 778          * The stackList contains the currently read stackframes which were sent
 779          * from DBG. The DBG interface holds a list of the active stack frames.
 780          * This method replicates the 'static' stackframe list with the DBG stackframe list
 781          * Replication is done in the following way:
 782          * <ul>
 783          * <li> It looks for new stackframes within the DBG stackframe list and
 784          *      adds them to the 'static' list.
 785          * <li> It looks for stackframes within the 'static' list, and removes them
 786          *              from the 'static' list in case they do not appear within the DBG list.
 787          * <li> It looks for stackframes which are already existent and replicates the
 788          *              line number and the index number.
 789          * <li> At the end, the 'static' stackframe list has to be sorted by the stackframes
 790          *              index numbers.
 791          * </ul>
 792          *
 793          * Removes the unused stackframes from the list, or adds stackframes which
 794          * are not yet in the list.
 795          *
 796          *
 797          * @param stackList
 798          */
 799         private void updateStackFrameList (Vector stackList) {
 800                 int                     i;
 801                 int             n;
 802                 PHPStackFrame   stackFrameNew;
 803                 PHPStackFrame   stackFrameOld;
 804                 PHPStackFrame[] newStackList;
 805
 806                 markIdenticalStackFrames (stackListOld, stackList);                     // Check whether the newly send stack frames can be found in the list
 807                                                                                                                                                                 // of old stack frames
 808
 809                 for (i = 0; i < stackList.size (); i++) {                                                               // For all stackList entries
 810                         stackFrameNew = (PHPStackFrame) stackList.get(i);
 811
 812                         for (n = 0; n < stackListOld.size (); n++) {                                    // For all StackFrames in the StackFrame list
 813                                 stackFrameOld = (PHPStackFrame) stackListOld.get (n);                   //
 814
 815                                 if (stackFrameOld.isAvailable ()) {                             // If this stack frame was already found in the new list skip it
 816                                         continue;
 817                                 }
 818
 819                                 if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ())) {// Did we find the sent stackframe within the list of old stackframes?
 820                                         stackFrameOld.setLineNumber (stackFrameNew.getLineNumber ());
 821                                         stackFrameOld.setIndex (stackFrameNew.getIndex ());
 822                                         stackFrameOld.setScopeID(stackFrameNew.getScopeID());
 823
 824                                         stackFrameOld.setAvailable (true);                                                      // And mark this stack frame as available
 825                                         stackFrameNew.setAvailable (true);                                                      // And mark this stack frame as available
 826
 827                                         break;                                                                  //  Yes, then break;
 828                                 }
 829                         }
 830
 831                         if (!stackFrameNew.isAvailable ()) {                                // Did not find the new stackframe within the list?
 832                                  stackFrameNew.setAvailable (true);                                                             // Mark the stack frame as available and
 833                                  stackListOld.add (stackFrameNew);                              //  then add the new stackframe
 834                         }
 835                 }
 836
 837                 // And now for removing unused stackframes from list
 838
 839                 for (n = 0; n < stackListOld.size(); n++) {
 840                         stackFrameOld = (PHPStackFrame) stackListOld.get(n);
 841
 842                         if (!stackFrameOld.isAvailable()) {
 843                                 stackListOld.remove(n--);
 844                         }
 845                 }
 846
 847                 Collections.sort (stackListOld);                                                                                // Sort the 'static' stackframe list by the stackframe index numbers.
 848                                                                                                                                                                 //
 849                 newStackList = new PHPStackFrame[stackListOld.size ()];
 850                 newStackList = (PHPStackFrame[]) stackListOld.toArray (newStackList);
 851                 DBGStackList = newStackList;
 852         }
 853
 854     /**
 855      * Read the response from DBG and process the frame
 856      *
 857          * @return
 858          * - The received command
 859          * - or 0 if something was wrong
 860      */
 861         public int readResponse () throws IOException {
 862         int     bytesToRead            = 0;                         // The number of byte to read for the current DBG block
 863         int     nextFrame              = 0;                         // The current read position within entirePack
 864         int     i                      = 0;
 865         int     cmdReceived            = 0;
 866         int     stackIndex             = 0;
 867         boolean errorStack             = false;
 868         char[]  dbg_header_struct_read = new char[16];              // The buffer for the first 16 bytes of a block
 869         int[]   dbg_header_struct      = new int[4];                // The first four numbers (long) of a block
 870         int[]   dbg_bpl_tmp            = new int[10];
 871         int[]   dbg_frame              = new int[2];
 872         int[]   dbg_eval_tmp           = new int[3];
 873         int[]   dbg_src_tree_tmp       = new int[4];                //
 874         int[]   dbg_error_tmp          = new int[2];
 875         Vector  rawList                = new Vector();
 876         Vector  stackList              = new Vector();              // Intermediate stacklist which is build up in FRAME_STACK frame
 877
 878         rawList.clear ();
 879         stackList.clear ();
 880
 881                 // Read from input
 882         while (readInput (dbg_header_struct_read, 16) != 0) {                               // Read 16 byte from input stream
 883                         dbg_header_struct[0] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 0);               // Debug sync header
 884             dbg_header_struct[1] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 4);           // Command
 885             dbg_header_struct[2] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 8);       //
 886             dbg_header_struct[3] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 12);      // Bytes within this block
 887
 888             if (dbg_header_struct[0] != 0x5953) {                                           // Check DBG sync bytes
 889                 return 0;                                                                   // Wrong header
 890             }
 891
 892             cmdReceived = dbg_header_struct[1];                                             // Get the command
 893             setLastCmd (cmdReceived);                                                                                                           // Store the info about the current command
 894             bytesToRead = dbg_header_struct[3];                                                                                         // Get the number of bytes to read for this block
 895
 896                         //System.out.println("Response Received: " + cmdReceived);
 897                         char[] entirePack = new char[bytesToRead];                                      // Store the block data into buffer 'entirePack'
 898
 899             if (bytesToRead > 0) {                                                          // If there is something within the frame
 900                 if (readInput (entirePack, bytesToRead) < bytesToRead) {                    // Read the frame into the buffer
 901                     return 0;                                                               // We did not read enough bytes, error
 902                 }
 903                         }
 904
 905                         nextFrame = 0;                                                                  // Start with the first frame
 906
 907                         while (nextFrame < bytesToRead) {                                               // As long as we have something within this block
 908                                 dbg_frame[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame);                           // The name of the frame
 909                                 dbg_frame[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);               // The size of the frame
 910                                 nextFrame   += 8;                                                           // The next read position
 911
 912                                 if (dbg_frame[1] == 0) {                                                    // Something within the frame?
 913                                         return 0;                                                               //  Nothing to read, error
 914                                 }
 915
 916                                 switch (dbg_frame[0]) {
 917                                         case PHPDBGBase.FRAME_STACK:
 918                                                 int[] dbg_stack_new = new int[4];                                       //
 919
 920                                                 dbg_stack_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);   // Source line number
 921                                                 dbg_stack_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);   // Module number
 922                                                 dbg_stack_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);   // Scope id
 923                                                 dbg_stack_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);  // ID of description string
 924
 925                                                 if ((dbg_stack_new[1] != 0) && !errorStack) {
 926                                                         PHPStackFrame newStack;
 927
 928                                                         stackIndex++;
 929                                                         newStack = new PHPStackFrame (null,                                 // The thread
 930                                                                                       getModByNo (dbg_stack_new[1]),        // The name of the module (file)
 931                                                                                       dbg_stack_new[0],                     // The source line number
 932                                                                                                                   stackIndex,
 933                                                                                                                   getRawFrameData (entirePack,          // Get the string from this packet
 934                                                                                                                                    dbg_stack_new[3]),   // The frame ID for which we want the string
 935                                                                                                                   dbg_stack_new[1],                                     // The module number
 936                                                                                                                   dbg_stack_new[2]);
 937                                                         stackList.add (newStack);
 938                                                 }
 939
 940                                                 errorStack = false;
 941                                                 break;
 942
 943                                         case PHPDBGBase.FRAME_SOURCE:                                                   // Nothing to be done here
 944                                                 break;                                                                      // TODO: what's with that frame? Something interesting
 945
 946                                         case PHPDBGBase.FRAME_SRC_TREE:                                                 //
 947                                                 dbg_src_tree_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);        // The parent module number
 948                                                 dbg_src_tree_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);        // The parent line number (not used)
 949                                                 dbg_src_tree_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);        // The module number
 950                                                 dbg_src_tree_tmp[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);       // The filename number
 951
 952                                                 if (getModByNo (dbg_src_tree_tmp[2]).equals ("")) {
 953                                                         String fileName;
 954
 955                                                         fileName = new String (getRawFrameData (entirePack, dbg_src_tree_tmp[3]));      // Get the filename
 956
 957                                                         if (dbg_src_tree_tmp[2] != 0) {                                             // If there is a module number
 958                                                                 PHPDBGMod modNew;
 959
 960                                                                 modNew = new PHPDBGMod (dbg_src_tree_tmp[2], fileName);                 // Create a module object
 961
 962                                                                 DBGMods.add (modNew);                                                   // And store it to array
 963                                                         }
 964                                                 }
 965                                                 break;
 966
 967                                         case PHPDBGBase.FRAME_RAWDATA:                                                      // Nothing to be done here
 968                                                 break;                                                                          //  FRAME_RAWDATA are processed within getRawFrameData
 969
 970                                         case PHPDBGBase.FRAME_ERROR:                                                                                                            // An error frame
 971                                                 errorStack       = true;                                                                                                                // Yes, we have an error stack
 972                                                 dbg_error_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                   // Error type
 973                                                 dbg_error_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                   // Error message ID
 974
 975                                                 String error = "\n";                                                            //
 976
 977                                                 switch (dbg_error_tmp[0]) {                                                                                                             // Switch on error type
 978                                                         case PHPDBGBase.E_ERROR:                        error += "[Error]";                     break;
 979                                                         case PHPDBGBase.E_WARNING:                      error += "[Warning]";                   break;
 980                                                         case PHPDBGBase.E_PARSE:                        error += "[Parse Error]";               break;
 981                                                         case PHPDBGBase.E_NOTICE:                       error += "[Notice]";                    break;
 982                                                         case PHPDBGBase.E_CORE_ERROR:           error += "[Core Error]";                break;
 983                                                         case PHPDBGBase.E_CORE_WARNING:         error += "[Core Warning]";              break;
 984                                                         case PHPDBGBase.E_COMPILE_ERROR:        error += "[Compile Error]";             break;
 985                                                         case PHPDBGBase.E_COMPILE_WARNING:      error += "[Compile Warning]";   break;
 986                                                         case PHPDBGBase.E_USER_ERROR:           error += "[User Error]";                break;
 987                                                         case PHPDBGBase.E_USER_WARNING:         error += "[User Warning]";              break;
 988                                                         case PHPDBGBase.E_USER_NOTICE:          error += "[User Notice]";               break;
 989                                                         default:                                                        error += "[Unexpected Error]";  break;
 990                                                 }
 991
 992                                                 error += ": ";
 993                                                 error += new String (getRawFrameData (entirePack, dbg_error_tmp[1]));                   // Add the error string for this error message ID
 994                                                 error += "\n";                                                                  // Append a CR
 995
 996                                                 PHPDebugCorePlugin.log (new DebugException (new Status (IStatus.WARNING,
 997                                                                                                         PHPDebugCorePlugin.PLUGIN_ID,
 998                                                                                                                                                                 IStatus.OK,
 999                                                                                                                                                                 error, null)));
1000
1001                                                 // To print errors on the console, I must execute a code in the
1002                                                 // php context, that write the stderr... I didn't found a better way
1003                                                 // TODO: Find a better way????
1004
1005 //                                              String codeExec= "";
1006 //                                              codeExec= "fwrite(fopen('php://stderr', 'w'),\\\"" + error + "\\\");";
1007 //                                              try {
1008 //                                                      evalBlock("eval(\"" + codeExec + "\");");
1009 //                                              } catch (DebugException e) {
1010 //                                                      PHPDebugCorePlugin.log(e);
1011 //                                              }
1012 //
1013                                                 if (!stopOnError) {                                                             // Is always false (Did not see where this is set to true!?)
1014                                                         if (lastCommand.equals (PHPDBGBase.DBGA_CONTINUE)) {                        // If last command for PHP was a 'continue',
1015                                                                 continueExecution ();                                                   //  send continue again
1016                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPINTO)) {                 // If last command for PHP was a 'step into',
1017                                                                 stepInto ();                                                            //  send 'step into' again
1018                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOUT)) {                  // If last command for PHP was a 'step out',
1019                                                                 stepOut ();                                                             //  send 'step out' again
1020                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOVER)) {                 // If last command for PHP was a 'step over',
1021                                                                 stepOver ();                                                            //  send 'step over' again
1022                                                         }
1023                                                 }
1024                                                 break;
1025
1026                                         case PHPDBGBase.FRAME_EVAL:
1027                                                 //String evalString;
1028
1029                                                 //evalString      = new String ("");
1030                                                 dbg_eval_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                    // istr
1031                                                 dbg_eval_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                    // iresult
1032                                                 dbg_eval_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);                    // ierror
1033
1034                                                 evalRet                 = getRawFrameData (entirePack, dbg_eval_tmp[1]);                //
1035                                                 //evalString    = getRawFrameData (entirePack, dbg_eval_tmp[0]);                //
1036                                                 break;
1037
1038                                         case PHPDBGBase.FRAME_BPS:                                                          //
1039                                                 break;                                                                          //
1040
1041                                         case PHPDBGBase.FRAME_BPL:
1042                                                 int[] dbg_bpl_new;
1043
1044                                                 dbg_bpl_new        = new int[10];
1045                                                 dbg_bpl_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);
1046                                                 dbg_bpl_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);
1047                                                 dbg_bpl_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);
1048                                                 dbg_bpl_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);
1049                                                 dbg_bpl_new[4] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 16);
1050                                                 dbg_bpl_new[5] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 20);
1051                                                 dbg_bpl_new[6] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 24);
1052                                                 dbg_bpl_new[7] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 28);
1053                                                 dbg_bpl_new[8] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 32);
1054                                                 dbg_bpl_new[9] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 36);
1055
1056                                                 // look if breakpoint already exists in vector
1057                                                 for (i = 0; i < DBGBPList.size (); i++) {
1058                                                         dbg_bpl_tmp = (int[]) DBGBPList.get (i);
1059
1060                                                         if (dbg_bpl_tmp[8] == dbg_bpl_new[8]) {
1061                                                                 DBGBPList.remove (i);
1062
1063                                                                 break;
1064                                                         }
1065                                                 }
1066
1067                                                 // add breakpoint to vector
1068                                                 DBGBPList.add (dbg_bpl_new);
1069                                                 copyToLastBP (dbg_bpl_new);
1070
1071                                                 // mod no returned?
1072                                                 if (getModByNo (dbg_bpl_new[0]).equals ("")) {
1073                                                         String fileName;
1074
1075                                                         fileName = new String (getRawFrameData (entirePack, dbg_bpl_new[2]));
1076
1077                                                         if (dbg_bpl_new[0] != 0) {
1078                                                                 PHPDBGMod modNew;
1079
1080                                                                 modNew = new PHPDBGMod (dbg_bpl_new[0], fileName);
1081
1082                                                                 DBGMods.add (modNew);
1083                                                         }
1084                                                 }
1085                                                 break;
1086
1087                                         case PHPDBGBase.FRAME_VER:
1088                                                 break;
1089
1090                                         case PHPDBGBase.FRAME_SID:
1091                                                 sid = PHPDBGBase.Char4ToInt(entirePack, nextFrame + 0);
1092                                                 break;
1093
1094                                         case PHPDBGBase.FRAME_SRCLINESINFO:
1095                                                 break;
1096
1097                                         case PHPDBGBase.FRAME_SRCCTXINFO:
1098                                                 break;
1099
1100                                         case PHPDBGBase.FRAME_LOG:
1101                                                 break;
1102
1103                                         case PHPDBGBase.FRAME_PROF:
1104                                                 break;
1105
1106                                         case PHPDBGBase.FRAME_PROF_C:
1107                                                 break;
1108
1109                                         case PHPDBGBase.FRAME_SET_OPT:
1110                                                 break;
1111                                 }
1112
1113                                 nextFrame += dbg_frame[1];                                                      // go to next frame
1114                         }
1115
1116                         // Now process command
1117                         switch(cmdReceived) {
1118                                 case PHPDBGBase.DBGC_REPLY:
1119                                         break;
1120
1121                                 case PHPDBGBase.DBGC_STARTUP:
1122                                         break;
1123
1124                                 case PHPDBGBase.DBGC_END:
1125                                         sessionEnded = true;
1126                                         this.proxy.setTerminated();
1127                                         break;
1128
1129                                 case PHPDBGBase.DBGC_BREAKPOINT:
1130                                         BPUnderHit   = getBPUnderHit ();
1131                                         updateStackFrameList (stackList);
1132                                         break;
1133
1134                                 case PHPDBGBase.DBGC_STEPINTO_DONE:
1135                                 case PHPDBGBase.DBGC_STEPOVER_DONE:
1136                                 case PHPDBGBase.DBGC_STEPOUT_DONE:
1137                                 case PHPDBGBase.DBGC_EMBEDDED_BREAK:
1138                                 case PHPDBGBase.DBGC_PAUSE:
1139                                         BPUnderHit   = 1;
1140                                         updateStackFrameList (stackList);
1141                                         break;
1142
1143                                 case PHPDBGBase.DBGC_ERROR:
1144                                         stackList.clear ();
1145                                         updateStackFrameList (stackList);
1146                                         break;
1147
1148                                 case PHPDBGBase.DBGC_LOG:
1149                                         break;
1150
1151                                 case PHPDBGBase.DBGC_SID:
1152                                         break;
1153                         }
1154                 }
1155
1156                 return cmdReceived;                                         // Return the command we received with this block
1157         }
1158
1159     /**
1160      *
1161      */
1162
1163         public PHPStackFrame[] getStackList() {
1164                 return DBGStackList;
1165         }
1166
1167         /**
1168          * Reads from input buffer (response sent from DBG) the given number of chars
1169          * into frame buffer.
1170          *
1171          * @param buffer  The frame buffer where to store the read data from DBG.
1172          * @param bytes   The number of bytes (chars) which are to read from input stream.
1173          * @return        The number of bytes actually read.
1174          */
1175         private int readInput (char[] buffer, int bytes) throws IOException {
1176                 int bytesRead = 0;                                                                                      // Reset the bytes read counter
1177
1178                 for (int i = 0; i < bytes; i++) {                           // For the number of bytes we should read
1179                         if (in.ready ()) {                                                                              // If input stream is ready for reading
1180                                 buffer[i] = (char) (in.read () & 0x00FF);           // Read a char and store only the least significant 8-bits
1181                                 bytesRead++;                                        // Increment the bytes read counter
1182                         }
1183                         else {                                                  // Input stream is not ready
1184                                 break;                                              // Break the loop
1185                         }
1186                 }
1187
1188                 return bytesRead;                                                                                       // Return the number of bytes actually read
1189         }
1190
1191         /**
1192          * PHPProxy could stop the waiting for a response with this method.
1193          *
1194          */
1195         public void setShouldStop () {
1196                 this.shouldStop = true;
1197         }
1198
1199         /**
1200          * @param milliseconds The maximum time in milliseconds we wait for something
1201          *                     to be send from DBG.
1202          * @return             - true if something was received from DBG
1203          *                                         - false if nothing was send from DBG within the given time
1204          *
1205          */
1206         public boolean waitResponse (long milliseconds) throws IOException {
1207                 long timeout;
1208
1209                 timeout = System.currentTimeMillis () + milliseconds;           // Calculate the system time till we wait.
1210
1211                 while (System.currentTimeMillis () < timeout) {             // Is waiting time running out?
1212                         if (in.ready () || shouldStop) {                        //  No, so did we get something or should we stop now
1213                                 break;                                              //   Yes, break the waiting
1214                         }
1215                 }
1216
1217                 return in.ready ();                                         // true if we got something from DBG
1218         }
1219 }