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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.PHPDBGProxy.PHPLoop;
  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 int                             rawCounter = 1000;                                      // An rawData frame ID counter
  51         private PHPDBGProxy             proxy = null;
  52         //private int                           lastCmd = -1;
  53         private int                             sid = 0;
  54         private boolean                         stopOnError = false;
  55         private char[]                  lastCommand = new char[4];
  56
  57         private static final String GlobalVariablesTitle = PHPDebugCorePlugin
  58                         .getResourceString("VariablesView.GlobalVariables.title");
  59
  60         /**
  61          * @param in    The input stream (communication from DBG).
  62          * @param os    The output stream (communication to DBG).
  63          * @param proxy The proxy to which this interface belongs.
  64          */
  65         public PHPDBGInterface (BufferedReader in, OutputStream os, PHPDBGProxy proxy) {
  66                 DBGBPList.clear ();
  67
  68                 this.in         = in;
  69                 this.os         = os;
  70                 this.proxy      = proxy;
  71         }
  72
  73         /**
  74          *
  75          * @param mod_name  The module (source file) to which we add the breakpoint.
  76          * @param line      The line where the breakpoint is set.
  77          * @param hitCount  The number of hit counts before suspend.
  78          * @param condition The break condition
  79          * @return          Breakpoint ID ???.
  80          */
  81         public int addBreakpoint (String mod_name, int line, int hitCount, String condition) throws IOException {
  82                 return setBreakpoint (mod_name, condition, line, PHPDBGBase.BPS_ENABLED + PHPDBGBase.BPS_UNRESOLVED, 0, hitCount, 0, 0, 0);
  83         }
  84
  85         /**
  86          *
  87          * @param mod_name The module (source file) to which we add the breakpoint.
  88          * @param line     The line where the breakpoint is set.
  89          * @param bpNo     The breakpoint ID ???.
  90          */
  91         public void removeBreakpoint (String mod_name, int line, int bpNo) throws IOException {
  92                 setBreakpoint (mod_name, "", line, PHPDBGBase.BPS_DISABLED, 0, 0, 0, bpNo, 0);
  93         }
  94
  95         /**
  96          * Is this method used anywhere?
  97          *
  98          */
  99 //      public void requestDBGVersion () throws IOException {
 100 //              PHPDBGPacket DBGPacket;                                     // A DBG message packet
 101 //              PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 102 //
 103 //              DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 104 //              DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_VER);         // We want the version of DBG
 105 //
 106 //              DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 107 //
 108 //              if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 109 //                      return;                                                 //  No
 110 //              }
 111 //
 112 //              DBGPacket.sendPacket (os);                                                                      // Send the request to DBG
 113 //      }
 114
 115         /**
 116          * Called by the proxy
 117          *
 118          */
 119         public void getSourceTree () throws IOException {
 120                 PHPDBGPacket DBGPacket;                                     // A DBG message packet
 121                 PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 122
 123                 DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 124                 DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_SRC_TREE);        // We want a source tree from DBG
 125
 126                 DBGPacket.addFrame (DBGFrame);                              // Add the 'what we want' to the DBG packet
 127
 128                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 129                         return;                                                                                                 //  No
 130                 }
 131
 132                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 133
 134                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 135                 flushAllPackets ();                                                                             // Read and process the response from DBG
 136         }
 137
 138         /**
 139          * Is this method called from anywhere?
 140          *
 141          * @param modName The modul (filename).
 142          */
 143 //      public void addDBGModName (String modName) throws IOException {
 144 //              PHPDBGPacket DBGPacket;                                     // A DBG message packet
 145 //              PHPDBGFrame  DBGFrame;                                      // A frame within a DBG packet
 146 //
 147 //              DBGPacket = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);     // A request for DBG
 148 //              DBGFrame  = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);     // We want Module name from DBG
 149 //
 150 //              rawCounter++;                                               // Increment the rawData ID counter
 151 //              DBGFrame.addInt (rawCounter);                                                           // FRAME_RAWDATA ID
 152 //              DBGFrame.addInt (modName.length () + 1);                                        // The length of rawdata string (incl. null char termination)
 153 //              DBGFrame.addString (modName);                                                           // The file name (module name)
 154 //              DBGFrame.addChar ('\0');                                                                        // Add the C-String null termination
 155 //
 156 //              DBGPacket.addFrame (DBGFrame);
 157 //
 158 //              if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 159 //                      return;                                                                                                 //  No
 160 //              }
 161 //
 162 //              DBGPacket.sendPacket (os);
 163 //      }
 164
 165         /**
 166          * This method is called for adding or removing breakpoints.
 167          *
 168          * @param mod_name      The module name (file name).
 169          * @param condition     Info about the condition when to break (not used at the moment).
 170          * @param line          The breakpoints line.
 171          * @param state         Info whether this breakpoint has to be dis- or enabled.
 172          * @param istep         Always 0.
 173          * @param hitcount      Always 0.
 174          * @param skiphits      Always 0.
 175          * @param bpno          The breakpoint ID.
 176          * @param isunderhit    ???
 177          * @return
 178          */
 179         private int setBreakpoint (String mod_name, String condition, int line, int state, int istemp, int hitcount, int skiphits, int bpno, int isunderhit) throws IOException {
 180                 PHPDBGPacket    DBGPacket;
 181                 PHPDBGFrame     DBGFrame1;
 182                 PHPDBGFrame     DBGFrame2;
 183                 PHPDBGFrame             DBGFrame3;
 184                 int                     modNo;
 185
 186                 DBGPacket       = new PHPDBGPacket (PHPDBGBase.DBGA_REQUEST);
 187                 DBGFrame1       = new PHPDBGFrame (PHPDBGBase.FRAME_BPS);
 188                 DBGFrame2       = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);
 189                 DBGFrame3       = new PHPDBGFrame (PHPDBGBase.FRAME_RAWDATA);
 190
 191                 modNo           = getModByName (mod_name);                                              // Get the module ID by name
 192
 193                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 194                         DBGFrame1.addInt (modNo);                                                               // Add the module ID to frame 1
 195                 } else {
 196                         DBGFrame1.addInt (0);                                                                   // mod number (0 use file name)
 197                 }
 198
 199                 DBGFrame1.addInt (line);                                                                        // line number
 200
 201                 if (modNo >= 0) {                                           // Did we find a module ID for the module name?
 202                         DBGFrame1.addInt (0);                                                                   // use mod number
 203                 } else {
 204                         rawCounter++;
 205                         DBGFrame1.addInt (rawCounter);                                                  // ID of FRAME_RAWDATA to send file name
 206                 }
 207
 208                 if (modNo < 0) {                                            // Did we find a module ID for the module name?
 209                         DBGFrame2.addInt (rawCounter);                                      // FRAME_RAWDATA ID
 210                         DBGFrame2.addInt (mod_name.length() + 1);                   // length of rawdata (+ null char)
 211                         DBGFrame2.addString (mod_name);                                     // file name
 212                         DBGFrame2.addChar ('\0');                                                   // null char
 213
 214                         DBGPacket.addFrame (DBGFrame2);                         // First add file name data
 215                 }
 216
 217                 DBGFrame1.addInt (state);                                       // state BPS_*
 218                 DBGFrame1.addInt (istemp);                                      // istemp
 219                 DBGFrame1.addInt (0);                                               // hit count; this is not supported as one might think
 220                 DBGFrame1.addInt (hitcount);                                // skip hits is what we think is hit count.
 221
 222                 if (!condition.equals ("")) {                                                           // Do we have a condition for breakpoint
 223                         rawCounter++;                                                                                   // Set to new ID
 224                         DBGFrame1.addInt (rawCounter);                          // ID of condition
 225
 226                         DBGFrame3.addInt (rawCounter);                                      // FRAME_RAWDATA ID
 227                         DBGFrame3.addInt (condition.length() + 1);                  // length of rawdata (+ null char)
 228                         DBGFrame3.addString (condition);                                        // The break condition
 229                         DBGFrame3.addChar ('\0');                                                   // null char
 230
 231                         DBGPacket.addFrame (DBGFrame3);                         // First add break condition
 232                 }
 233                 else {
 234                         DBGFrame1.addInt (0);                                           // ID of condition is 0, because there is no condition
 235                 }
 236
 237                 DBGFrame1.addInt (bpno);                                            // breakpoint number
 238                 DBGFrame1.addInt (isunderhit);                                  // is under hit
 239
 240                 DBGPacket.addFrame (DBGFrame1);                                                         // Second add command data
 241
 242                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 243                         return 0;                                               //  No
 244                 }
 245
 246                 DBGPacket.sendPacket (os);                                  // Send the request to DBG
 247
 248                 clearLastBP ();
 249
 250                 waitResponse (1000);                                        // Wait for the DBG response (1 second)
 251                 flushAllPackets ();                                         // Read and process the response from DBG
 252
 253                 return LastBPRead[8];                                                                           // Return what ???
 254         }
 255
 256         /**
 257          *
 258          */
 259         private void clearLastBP () {
 260                 int i;
 261
 262                 for (i = 0; i < LastBPRead.length; i++) {
 263                         LastBPRead[i] = 0;
 264                 }
 265         }
 266
 267         /**
 268          *
 269          */
 270         private void copyToLastBP (int[] BPBody) {
 271                 int i;
 272
 273                 for (i = 0; i < LastBPRead.length; i++) {
 274                         LastBPRead[i] = BPBody[i];
 275                 }
 276         }
 277
 278         /**
 279          *
 280          */
 281         public void continueExecution () throws IOException {
 282                 PHPDBGPacket DBGPacket;
 283
 284                 BPUnderHit = 0;
 285                 DBGPacket  = new PHPDBGPacket (PHPDBGBase.DBGA_CONTINUE);
 286
 287                 if (proxy.getSocket ().isClosed ()) {                                           // Can we communiate with DBG?
 288                         return;                                                 //  No
 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                 int global_scope_id = (DBGStackList.length > 1) ? 2 : PHPDBGBase.GLOBAL_SCOPE_ID;
 431                 // DBG 2.13.1 doesn't return Super Globals with GLOBAL_SCOPE_ID in nested stackframes,
 432                 // so using 2(most out-standing stack context) instead of GLOBAL_SCOPE_ID.
 433                 // Also note that 2.13.1 doesn't return $this in class context.
 434                 // (You can inspect $this in Expressions View. And once it is shown, 2.13.1 comes to return $this.)
 435                 Vector globalList = getVariables(DBGStackList[DBGStackList.length - 1], global_scope_id);
 436                 if (!globalList.isEmpty()) {
 437                         // remove unresolved '$this=?' variable
 438                         removeUnresolvedThisVar(globalList);
 439
 440                         PHPVariable var = (PHPVariable) globalList.get(0);
 441                         var.setName(GlobalVariablesTitle);
 442                         var.setModifiable(false);
 443                 }
 444
 445                 int scopeID = stack.getScopeID();
 446                 if (!globalList.isEmpty()
 447                                 && ((DBGStackList.length == 1)
 448                                                 || (scopeID == PHPDBGBase.CURLOC_SCOPE_ID + 1))) {
 449                         // 'main()' stackframe
 450                         PHPVariable var = (PHPVariable) globalList.get(0);
 451                         PHPValue val = (PHPValue) var.getValue();
 452                         DBGVarList = val.getChildVariables();
 453                         return DBGVarList;
 454
 455                 } else if (scopeID == PHPDBGBase.CURLOC_SCOPE_ID) {
 456                         // current stackframe
 457                         DBGVarList = getVariables(stack, PHPDBGBase.CURLOC_SCOPE_ID);
 458
 459                 } else {
 460                         // back-trace stackframe
 461                         //DBGVarList = getVariables(stack, scopeID);
 462                         //removeUnresolvedThisVar(DBGVarList);
 463                         // DBG 2.15.5 causes Application Error (on win32) in *some* cases.
 464                         DBGVarList.clear();
 465                 }
 466
 467                 if (DBGVarList.size() > 0) {                                                            // Did we get back variables?
 468                         PHPVariable var = (PHPVariable) DBGVarList.get(0);              // Yes, then get the first PHPVariable
 469                         PHPValue    val = (PHPValue) var.getValue();                    // Get the value
 470
 471                         if (var.getName().equals("")) {                                                 // Is the root node an empty node (usually it is)
 472                                 DBGVarList = val.getChildVariables();                           // Then remove the empty node.
 473                                                                                                                                         // With removing the empty root node, it wouldn't be necessary to
 474                                                                                                                                         // set the name to an empty string. So the code below is just for
 475                                                                                                                                         // info or in case the users want to have the empty root node.
 476
 477                                                                                                                                         // The eclipse variable view cannot handle Variables which have an empty name
 478                                                                                                                                         // when it comes to variable tree restore operation. Without a name, no restore!
 479                                 //var.setName (" ");                                                            // Give a name to the variable root node. Even if it is only a space :-)
 480                         }                                                                                                               // TO DO the best would be to remove the empty root node, but this would
 481                                                                                                                                         // require a understanding and reworking of the PHPDBGEvalstring class.
 482                 }
 483
 484                 if (!globalList.isEmpty()) {
 485                         DBGVarList.add(globalList.get(0));
 486                 }
 487
 488                 return DBGVarList;                                                                                      // Return the variables as list
 489         }
 490
 491         /**
 492          *
 493          */
 494         private Vector getVariables(PHPStackFrame stack, int scope_id) throws IOException {
 495                 PHPDBGPacket DBGPacket = new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 496                 PHPDBGFrame DBGFrame1 = new PHPDBGFrame(PHPDBGBase.FRAME_EVAL);
 497
 498                 DBGFrame1.addInt(0);
 499                 DBGFrame1.addInt(scope_id);
 500
 501                 DBGPacket.addFrame(DBGFrame1);
 502                 evalRet = "";
 503
 504                 if (proxy.getSocket().isClosed()) {
 505                         return new Vector();
 506                 }
 507                 DBGPacket.sendPacket(os);
 508
 509                 waitResponse(1000);
 510                 flushAllPackets();
 511
 512                 PHPDBGEvalString evalStr = new PHPDBGEvalString(stack, evalRet);
 513                 return evalStr.getVariables();
 514         }
 515
 516         /**
 517          * Remove unresolved $this variable
 518          *
 519          * DBG returns $this=? in function's or intermediate stackframes.
 520          * (In current method's stackframe, DBG returns $this=classname)
 521          *
 522          * @param varList
 523          */
 524         private void removeUnresolvedThisVar(Vector varList) {
 525                 if (varList.size() > 0) {
 526                         PHPVariable var = (PHPVariable) varList.get(0);
 527                         PHPValue val = (PHPValue) var.getValue();
 528                         Vector workList = val.getChildVariables();
 529                         for (int i = 0; i < workList.size(); i++) {
 530                                 PHPVariable workvar = (PHPVariable) workList.get(i);
 531                                 if (workvar.getName().equals("$this")) {
 532                                         String workval = ((PHPValue) workvar.getValue()).getValueString();
 533                                         if (workval.equals("?") || workval.equals("NULL")) {
 534                                                 workList.remove(i);
 535                                         }
 536                                         break;
 537                                 }
 538                         }
 539                 }
 540         }
 541
 542         /**
 543          *
 544          * @param logString
 545          */
 546         public void log(String logString) throws IOException, DebugException  {
 547                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 548                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_LOG);
 549                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 550
 551                 rawCounter++;
 552                 DBGFrame1.addInt(rawCounter);                           // ilog
 553                 DBGFrame1.addInt(1);                                            // type
 554                 DBGFrame1.addInt(0);                                            // mod_no
 555                 DBGFrame1.addInt(0);                                            // line_no
 556                 DBGFrame1.addInt(0);                                            // imod_name
 557                 DBGFrame1.addInt(0);                                            // ext_info
 558
 559                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 560                 DBGFrame2.addInt(logString.length() + 1);       // length of rawdata (+ null char)
 561                 DBGFrame2.addString(logString);                         // log string
 562                 DBGFrame2.addChar('\0');                                        // null char
 563
 564                 // Add raw data first
 565                 DBGPacket.addFrame(DBGFrame2);
 566                 // Add command data
 567                 DBGPacket.addFrame(DBGFrame1);
 568
 569                 if (proxy.getSocket ().isClosed ()) {                   // Do we have a socket for DBG communication?
 570                         return;                                                                                         //  No, then leave here
 571                 }
 572
 573                 DBGPacket.sendPacket(os);
 574
 575                 waitResponse(1000);
 576                 flushAllPackets();
 577         }
 578
 579         public synchronized PHPVariable[] evalBlock(PHPStackFrame stack, String evalString) throws IOException, DebugException {
 580                 PHPDBGPacket DBGPacket= new PHPDBGPacket(PHPDBGBase.DBGA_REQUEST);
 581                 PHPDBGFrame DBGFrame1= new PHPDBGFrame(PHPDBGBase.FRAME_EVAL);
 582                 PHPDBGFrame DBGFrame2= new PHPDBGFrame(PHPDBGBase.FRAME_RAWDATA);
 583
 584                 rawCounter++;
 585                 DBGFrame1.addInt(rawCounter);                           // istr = raw data ID
 586                 //DBGFrame1.addInt(1);                                          // scope_id = -1 means current location, 0 never used, +1 first depth
 587                 int scope_id = stack.getScopeID();
 588                 /* test code : unnecessary
 589                 if (DBGStackList.length == 1 || scope_id == (PHPDBGBase.CURLOC_SCOPE_ID + 1)) {
 590                         scope_id = PHPDBGBase.GLOBAL_SCOPE_ID;
 591                 }
 592                 */
 593                 DBGFrame1.addInt(scope_id);
 594
 595                 DBGFrame2.addInt(rawCounter);                           // FRAME_RAWDATA ID
 596                 DBGFrame2.addInt(evalString.length() + 1);      // length of rawdata (+ null char)
 597                 DBGFrame2.addString(evalString);                        // eval block
 598                 DBGFrame2.addChar('\0');                                        // null char
 599
 600                 // Add raw data first
 601                 DBGPacket.addFrame(DBGFrame2);
 602                 // Add command data
 603                 DBGPacket.addFrame(DBGFrame1);
 604
 605                 if (proxy.getSocket().isClosed()) {                     // Do we have a socket for DBG communication?
 606                         return null;                                                    //  No, then leave here
 607                 }
 608                 DBGPacket.sendPacket(os);
 609
 610                 waitResponse(1000);
 611                 flushAllPackets();
 612
 613                 PHPDBGEvalString evalStr=new PHPDBGEvalString(stack, evalRet);
 614
 615                 return evalStr.getVars();
 616         }
 617
 618         /**
 619          * Read and process everthing we got from DBG
 620          */
 621         public void flushAllPackets () throws IOException {
 622                 while (readResponse() != 0);
 623         }
 624
 625         /**
 626          * Get the modules name by its number
 627          *
 628          * @param modNo The number (id) of the module
 629          * @return      The name of the module
 630          */
 631         public String getModByNo (int modNo) {
 632                 int             i;
 633                 PHPDBGMod       dbg_mod;
 634
 635                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 636                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 637
 638                         if (dbg_mod.getNo () == modNo) {                            // Is the module from the array the module we want?
 639                                 return dbg_mod.getName ();                              //  Yes, return the name of the module
 640                         }
 641                 }
 642
 643                 return "";                                                      // If nothing was found return emtpy string
 644         }
 645
 646         /**
 647          *
 648          * @param  modName The name of the module for which we want the ID
 649          * @return
 650          * - The ID of the module
 651          * - -1 if nothing was found
 652          */
 653         private int getModByName (String modName) {
 654                 int             i;
 655                 PHPDBGMod       dbg_mod;
 656
 657                 for (i = 0; i < DBGMods.size (); i++) {                         // For all the modules we have within the array
 658                         dbg_mod = (PHPDBGMod) DBGMods.get (i);                      // Get the module
 659
 660                         if (dbg_mod.getName ().equalsIgnoreCase (modName)) {            // Is the module from the array the module we want?
 661                                 return dbg_mod.getNo ();                                //  Yes, return the name of the module
 662                         }
 663                 }
 664
 665                 return -1;                                                      // If nothing was found return -1
 666         }
 667
 668         /**
 669          * Return the string for the given frame number
 670          *
 671          * @param framesInfo The buffer which is to read
 672          * @param frameNo    The frame number
 673          * @return
 674          */
 675         private String getRawFrameData (char[] framesInfo, int frameNo) {
 676                 int   nextFrame = 0;                                                    // The current read position within the buffer
 677                 int[] dbg_frame = new int[2];                                           // The two frame header numbers
 678
 679                 while (nextFrame < framesInfo.length) {                                 // As long we have something within the buffer
 680                         dbg_frame[0] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame);           // The frame type
 681                         dbg_frame[1] = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);       // The frame size
 682
 683                         nextFrame   += 8;                                                   // The current read position
 684
 685                         if (dbg_frame[1] == 0) {                                            // If frame size is 0
 686                                 return "";                                                      //  return an emtpy string
 687                         }
 688
 689                         switch (dbg_frame[0]) {                                                     // Switch for the frame type
 690                                 case PHPDBGBase.FRAME_RAWDATA:                                                  // The only frame type we are interrested in
 691                                         if (frameNo == PHPDBGBase.Char4ToInt (framesInfo, nextFrame)) {         // Is it correct  number of the frame
 692                                                 int toRead;                                                     //
 693
 694                                                 toRead = PHPDBGBase.Char4ToInt (framesInfo, nextFrame + 4);     // The size of the string
 695
 696                                                 if ((int) framesInfo[nextFrame + 8 + toRead - 1] == 0) {                                // Is there a string termination at the end?
 697                                                         return String.copyValueOf (framesInfo, nextFrame + 8, toRead - 1);      // Then copy frame content to String without the \0 and return
 698                                                 }
 699
 700                                                 return String.copyValueOf (framesInfo, nextFrame + 8, toRead);  // Copy frame content to String and return
 701                                         }
 702                                         break;
 703                         }
 704
 705                         nextFrame += dbg_frame[1];                                                                      // Go for the next frame (add the length of the current one)
 706                 }
 707
 708                 return "";                                                                                                                                              // We did not found any FRAM_RAWDATA, so return an emtpy strin
 709         }
 710
 711         /**
 712          * Reset the availability flag for all stackframes in the list.
 713          *
 714          * @param list          The list of old stackframes
 715          */
 716         private void resetAvailability (Vector list) {
 717                 int             i;
 718
 719                 for (i = 0; i < list.size (); i++) {
 720                         ((PHPStackFrame) list.get(i)).setAvailable (false);                                     //
 721                 }
 722         }
 723
 724         /**
 725          * Check whether the new stackframe is in the list of old stackframes.
 726          * Test for identical stackframe (identical means same description and same line number).
 727          *
 728          * @param stackFrameNew The stackframe to check whether he is already within the old stackframe list
 729          * @param list          The list of old stackframes
 730          * @return
 731          *  - true if we have found the identical stackframe within the list
 732          *  - false if we did not find the identical stackframe within the list
 733          */
 734         private boolean isStackFrameInList (PHPStackFrame stackFrameNew, Vector list) {
 735                 int             i;
 736                 PHPStackFrame   stackFrameOld;
 737
 738                 for (i = 0; i < list.size (); i++) {
 739                         stackFrameOld = (PHPStackFrame) list.get (i);                                           //
 740
 741                         if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ()) &&
 742                                 stackFrameNew.getLineNumber () == stackFrameOld.getLineNumber ()) {     // Did we find the sent stackframe within the list of old stackframes?
 743                                 stackFrameOld.setAvailable (true);                                      // We found the new stackframe in the list of old stack frames
 744                 stackFrameOld.setIndex (stackFrameNew.getIndex ());
 745                 stackFrameOld.setScopeID(stackFrameNew.getScopeID());
 746                                 return true;                                                            // The stackframe was found in the list
 747                         }
 748                 }
 749
 750                 return false;
 751         }
 752
 753         /**
 754          * Check whether the new stackframe is in the list of old stackframes.
 755          * Test for exact stackframe (exact means same description and same line number).
 756          *
 757          * @param stackFrameNew The stackframe to check whether he is already within the old stackframe list
 758          * @param list          The list of old stackframes
 759          * @return
 760          *  - true if we have exactly this stackframe within the list
 761          *  - false if we did not find the exact stackframe within the list
 762          */
 763         private void markIdenticalStackFrames (Vector oldList, Vector newList) {
 764                 int             i;
 765                 PHPStackFrame   stackFrameNew;
 766
 767                 resetAvailability (oldList);                                                    // Reset the availability flag of the old stack frames
 768                 resetAvailability (newList);                                                    // Reset the availability flag of the old stack frames
 769
 770                 for (i = 0; i < newList.size (); i++) {                                                                                 // For all stackList entries
 771                         stackFrameNew = (PHPStackFrame) newList.get (i);
 772
 773                         if (isStackFrameInList (stackFrameNew, oldList)) {                          // Is this stackframe in the list
 774                                 stackFrameNew.setAvailable (true);                                                                              //
 775                                                                                                                                                                                 //
 776                                 break;
 777                         }
 778                 }
 779         }
 780
 781         /**
 782          *
 783          * The stackList contains the currently read stackframes which were sent
 784          * from DBG. The DBG interface holds a list of the active stack frames.
 785          * This method replicates the 'static' stackframe list with the DBG stackframe list
 786          * Replication is done in the following way:
 787          * <ul>
 788          * <li> It looks for new stackframes within the DBG stackframe list and
 789          *      adds them to the 'static' list.
 790          * <li> It looks for stackframes within the 'static' list, and removes them
 791          *              from the 'static' list in case they do not appear within the DBG list.
 792          * <li> It looks for stackframes which are already existent and replicates the
 793          *              line number and the index number.
 794          * <li> At the end, the 'static' stackframe list has to be sorted by the stackframes
 795          *              index numbers.
 796          * </ul>
 797          *
 798          * Removes the unused stackframes from the list, or adds stackframes which
 799          * are not yet in the list.
 800          *
 801          *
 802          * @param stackList
 803          */
 804         private void updateStackFrameList (Vector stackList) {
 805                 int                     i;
 806                 int             n;
 807                 PHPStackFrame   stackFrameNew;
 808                 PHPStackFrame   stackFrameOld;
 809                 PHPStackFrame[] newStackList;
 810
 811                 markIdenticalStackFrames (stackListOld, stackList);                     // Check whether the newly send stack frames can be found in the list
 812                                                                                                                                                                 // of old stack frames
 813
 814                 for (i = 0; i < stackList.size (); i++) {                                                               // For all stackList entries
 815                         stackFrameNew = (PHPStackFrame) stackList.get(i);
 816
 817                         for (n = 0; n < stackListOld.size (); n++) {                                    // For all StackFrames in the StackFrame list
 818                                 stackFrameOld = (PHPStackFrame) stackListOld.get (n);                   //
 819
 820                                 if (stackFrameOld.isAvailable ()) {                             // If this stack frame was already found in the new list skip it
 821                                         continue;
 822                                 }
 823
 824                                 if (stackFrameNew.getDescription ().equals (stackFrameOld.getDescription ())) {// Did we find the sent stackframe within the list of old stackframes?
 825                                         stackFrameOld.setLineNumber (stackFrameNew.getLineNumber ());
 826                                         stackFrameOld.setIndex (stackFrameNew.getIndex ());
 827                                         stackFrameOld.setScopeID(stackFrameNew.getScopeID());
 828
 829                                         stackFrameOld.setAvailable (true);                                                      // And mark this stack frame as available
 830                                         stackFrameNew.setAvailable (true);                                                      // And mark this stack frame as available
 831
 832                                         break;                                                                  //  Yes, then break;
 833                                 }
 834                         }
 835
 836                         if (!stackFrameNew.isAvailable ()) {                                // Did not find the new stackframe within the list?
 837                                  stackFrameNew.setAvailable (true);                                                             // Mark the stack frame as available and
 838                                  stackListOld.add (stackFrameNew);                              //  then add the new stackframe
 839                         }
 840                 }
 841
 842                 // And now for removing unused stackframes from list
 843
 844                 for (n = 0; n < stackListOld.size(); n++) {
 845                         stackFrameOld = (PHPStackFrame) stackListOld.get(n);
 846
 847                         if (!stackFrameOld.isAvailable()) {
 848                                 stackListOld.remove(n--);
 849                         }
 850                 }
 851
 852                 Collections.sort (stackListOld);                                                                                // Sort the 'static' stackframe list by the stackframe index numbers.
 853                                                                                                                                                                 //
 854                 newStackList = new PHPStackFrame[stackListOld.size ()];
 855                 newStackList = (PHPStackFrame[]) stackListOld.toArray (newStackList);
 856                 DBGStackList = newStackList;
 857         }
 858
 859     /**
 860      * Read the response from DBG and process the frame
 861      *
 862          * @return
 863          * - The received command
 864          * - or 0 if something was wrong
 865      */
 866         public int readResponse () throws IOException {
 867         int     bytesToRead            = 0;                         // The number of byte to read for the current DBG block
 868         int     nextFrame              = 0;                         // The current read position within entirePack
 869         int     i                      = 0;
 870         int     cmdReceived            = 0;
 871         int     stackIndex             = 0;
 872         boolean errorStack             = false;
 873         char[]  dbg_header_struct_read = new char[16];              // The buffer for the first 16 bytes of a block
 874         int[]   dbg_header_struct      = new int[4];                // The first four numbers (long) of a block
 875         int[]   dbg_bpl_tmp            = new int[10];
 876         int[]   dbg_frame              = new int[2];
 877         int[]   dbg_eval_tmp           = new int[3];
 878         int[]   dbg_src_tree_tmp       = new int[4];                //
 879         int[]   dbg_error_tmp          = new int[2];
 880         Vector  rawList                = new Vector();
 881         Vector  stackList              = new Vector();              // Intermediate stacklist which is build up in FRAME_STACK frame
 882
 883         rawList.clear ();
 884         stackList.clear ();
 885
 886                 // Read from input
 887         while (readInput (dbg_header_struct_read, 16) != 0) {                               // Read 16 byte from input stream
 888                         dbg_header_struct[0] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 0);               // Debug sync header
 889             dbg_header_struct[1] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 4);           // Command
 890             dbg_header_struct[2] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 8);       //
 891             dbg_header_struct[3] = PHPDBGBase.Char4ToInt (dbg_header_struct_read, 12);      // Bytes within this block
 892
 893             if (dbg_header_struct[0] != 0x5953) {                                           // Check DBG sync bytes
 894                 return 0;                                                                   // Wrong header
 895             }
 896
 897             cmdReceived = dbg_header_struct[1];                                             // Get the command
 898             setLastCmd (cmdReceived);                                                                                                           // Store the info about the current command
 899             bytesToRead = dbg_header_struct[3];                                                                                         // Get the number of bytes to read for this block
 900
 901                         //System.out.println("Response Received: " + cmdReceived);
 902                         char[] entirePack = new char[bytesToRead];                                      // Store the block data into buffer 'entirePack'
 903
 904             if (bytesToRead > 0) {                                                          // If there is something within the frame
 905                 if (readInput (entirePack, bytesToRead) < bytesToRead) {                    // Read the frame into the buffer
 906                     return 0;                                                               // We did not read enough bytes, error
 907                 }
 908                         }
 909
 910                         nextFrame = 0;                                                                  // Start with the first frame
 911
 912                         while (nextFrame < bytesToRead) {                                               // As long as we have something within this block
 913                                 dbg_frame[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame);                           // The name of the frame
 914                                 dbg_frame[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);               // The size of the frame
 915                                 nextFrame   += 8;                                                           // The next read position
 916
 917                                 if (dbg_frame[1] == 0) {                                                    // Something within the frame?
 918                                         return 0;                                                               //  Nothing to read, error
 919                                 }
 920
 921                                 switch (dbg_frame[0]) {
 922                                         case PHPDBGBase.FRAME_STACK:
 923                                                 int[] dbg_stack_new = new int[4];                                       //
 924
 925                                                 dbg_stack_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);   // Source line number
 926                                                 dbg_stack_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);   // Module number
 927                                                 dbg_stack_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);   // Scope id
 928                                                 dbg_stack_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);  // ID of description string
 929
 930                                                 if ((dbg_stack_new[1] != 0) && !errorStack) {
 931                                                         PHPStackFrame newStack;
 932
 933                                                         stackIndex++;
 934                                                         newStack = new PHPStackFrame (null,                                 // The thread
 935                                                                                       getModByNo (dbg_stack_new[1]),        // The name of the module (file)
 936                                                                                       dbg_stack_new[0],                     // The source line number
 937                                                                                                                   stackIndex,
 938                                                                                                                   getRawFrameData (entirePack,          // Get the string from this packet
 939                                                                                                                                    dbg_stack_new[3]),   // The frame ID for which we want the string
 940                                                                                                                   dbg_stack_new[1],                                     // The module number
 941                                                                                                                   dbg_stack_new[2]);
 942                                                         stackList.add (newStack);
 943                                                 }
 944
 945                                                 errorStack = false;
 946                                                 break;
 947
 948                                         case PHPDBGBase.FRAME_SOURCE:                                                   // Nothing to be done here
 949                                                 break;                                                                      // TODO: what's with that frame? Something interesting
 950
 951                                         case PHPDBGBase.FRAME_SRC_TREE:                                                 //
 952                                                 dbg_src_tree_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);        // The parent module number
 953                                                 dbg_src_tree_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);        // The parent line number (not used)
 954                                                 dbg_src_tree_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);        // The module number
 955                                                 dbg_src_tree_tmp[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);       // The filename number
 956
 957                                                 if (getModByNo (dbg_src_tree_tmp[2]).equals ("")) {
 958                                                         String fileName;
 959
 960                                                         fileName = new String (getRawFrameData (entirePack, dbg_src_tree_tmp[3]));      // Get the filename
 961
 962                                                         if (dbg_src_tree_tmp[2] != 0) {                                             // If there is a module number
 963                                                                 PHPDBGMod modNew;
 964
 965                                                                 modNew = new PHPDBGMod (dbg_src_tree_tmp[2], fileName);                 // Create a module object
 966
 967                                                                 DBGMods.add (modNew);                                                   // And store it to array
 968                                                         }
 969                                                 }
 970                                                 break;
 971
 972                                         case PHPDBGBase.FRAME_RAWDATA:                                                      // Nothing to be done here
 973                                                 break;                                                                          //  FRAME_RAWDATA are processed within getRawFrameData
 974
 975                                         case PHPDBGBase.FRAME_ERROR:                                                                                                            // An error frame
 976                                                 errorStack       = true;                                                                                                                // Yes, we have an error stack
 977                                                 dbg_error_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                   // Error type
 978                                                 dbg_error_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                   // Error message ID
 979
 980                                                 String error = "\n";                                                            //
 981
 982                                                 switch (dbg_error_tmp[0]) {                                                                                                             // Switch on error type
 983                                                         case PHPDBGBase.E_ERROR:                        error += "[Error]";                     break;
 984                                                         case PHPDBGBase.E_WARNING:                      error += "[Warning]";                   break;
 985                                                         case PHPDBGBase.E_PARSE:                        error += "[Parse Error]";               break;
 986                                                         case PHPDBGBase.E_NOTICE:                       error += "[Notice]";                    break;
 987                                                         case PHPDBGBase.E_CORE_ERROR:           error += "[Core Error]";                break;
 988                                                         case PHPDBGBase.E_CORE_WARNING:         error += "[Core Warning]";              break;
 989                                                         case PHPDBGBase.E_COMPILE_ERROR:        error += "[Compile Error]";             break;
 990                                                         case PHPDBGBase.E_COMPILE_WARNING:      error += "[Compile Warning]";   break;
 991                                                         case PHPDBGBase.E_USER_ERROR:           error += "[User Error]";                break;
 992                                                         case PHPDBGBase.E_USER_WARNING:         error += "[User Warning]";              break;
 993                                                         case PHPDBGBase.E_USER_NOTICE:          error += "[User Notice]";               break;
 994                                                         default:                                                        error += "[Unexpected Error]";  break;
 995                                                 }
 996
 997                                                 error += ": ";
 998                                                 error += new String (getRawFrameData (entirePack, dbg_error_tmp[1]));                   // Add the error string for this error message ID
 999                                                 error += "\n";                                                                  // Append a CR
1000
1001                                                 PHPDebugCorePlugin.log (new DebugException (new Status (IStatus.WARNING,
1002                                                                                                         PHPDebugCorePlugin.PLUGIN_ID,
1003                                                                                                                                                                 IStatus.OK,
1004                                                                                                                                                                 error, null)));
1005
1006                                                 // To print errors on the console, I must execute a code in the
1007                                                 // php context, that write the stderr... I didn't found a better way
1008                                                 // TODO: Find a better way????
1009
1010 //                                              String codeExec= "";
1011 //                                              codeExec= "fwrite(fopen('php://stderr', 'w'),\\\"" + error + "\\\");";
1012 //                                              try {
1013 //                                                      evalBlock("eval(\"" + codeExec + "\");");
1014 //                                              } catch (DebugException e) {
1015 //                                                      PHPDebugCorePlugin.log(e);
1016 //                                              }
1017 //
1018                                                 if (!stopOnError) {                                                             // Is always false (Did not see where this is set to true!?)
1019                                                         if (lastCommand.equals (PHPDBGBase.DBGA_CONTINUE)) {                        // If last command for PHP was a 'continue',
1020                                                                 continueExecution ();                                                   //  send continue again
1021                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPINTO)) {                 // If last command for PHP was a 'step into',
1022                                                                 stepInto ();                                                            //  send 'step into' again
1023                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOUT)) {                  // If last command for PHP was a 'step out',
1024                                                                 stepOut ();                                                             //  send 'step out' again
1025                                                         } else if (lastCommand.equals (PHPDBGBase.DBGA_STEPOVER)) {                 // If last command for PHP was a 'step over',
1026                                                                 stepOver ();                                                            //  send 'step over' again
1027                                                         }
1028                                                 }
1029                                                 break;
1030
1031                                         case PHPDBGBase.FRAME_EVAL:
1032                                                 //String evalString;
1033
1034                                                 //evalString      = new String ("");
1035                                                 dbg_eval_tmp[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);                    // istr
1036                                                 dbg_eval_tmp[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);                    // iresult
1037                                                 dbg_eval_tmp[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);                    // ierror
1038
1039                                                 evalRet                 = getRawFrameData (entirePack, dbg_eval_tmp[1]);                //
1040                                                 //evalString    = getRawFrameData (entirePack, dbg_eval_tmp[0]);                //
1041                                                 break;
1042
1043                                         case PHPDBGBase.FRAME_BPS:                                                          //
1044                                                 break;                                                                          //
1045
1046                                         case PHPDBGBase.FRAME_BPL:
1047                                                 int[] dbg_bpl_new;
1048
1049                                                 dbg_bpl_new        = new int[10];
1050                                                 dbg_bpl_new[0] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 0);
1051                                                 dbg_bpl_new[1] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 4);
1052                                                 dbg_bpl_new[2] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 8);
1053                                                 dbg_bpl_new[3] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 12);
1054                                                 dbg_bpl_new[4] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 16);
1055                                                 dbg_bpl_new[5] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 20);
1056                                                 dbg_bpl_new[6] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 24);
1057                                                 dbg_bpl_new[7] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 28);
1058                                                 dbg_bpl_new[8] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 32);
1059                                                 dbg_bpl_new[9] = PHPDBGBase.Char4ToInt (entirePack, nextFrame + 36);
1060
1061                                                 // look if breakpoint already exists in vector
1062                                                 for (i = 0; i < DBGBPList.size (); i++) {
1063                                                         dbg_bpl_tmp = (int[]) DBGBPList.get (i);
1064
1065                                                         if (dbg_bpl_tmp[8] == dbg_bpl_new[8]) {
1066                                                                 DBGBPList.remove (i);
1067
1068                                                                 break;
1069                                                         }
1070                                                 }
1071
1072                                                 // add breakpoint to vector
1073                                                 DBGBPList.add (dbg_bpl_new);
1074                                                 copyToLastBP (dbg_bpl_new);
1075
1076                                                 // mod no returned?
1077                                                 if (getModByNo (dbg_bpl_new[0]).equals ("")) {
1078                                                         String fileName;
1079
1080                                                         fileName = new String (getRawFrameData (entirePack, dbg_bpl_new[2]));
1081
1082                                                         if (dbg_bpl_new[0] != 0) {
1083                                                                 PHPDBGMod modNew;
1084
1085                                                                 modNew = new PHPDBGMod (dbg_bpl_new[0], fileName);
1086
1087                                                                 DBGMods.add (modNew);
1088                                                         }
1089                                                 }
1090                                                 break;
1091
1092                                         case PHPDBGBase.FRAME_VER:
1093                                                 break;
1094
1095                                         case PHPDBGBase.FRAME_SID:
1096                                                 sid = PHPDBGBase.Char4ToInt(entirePack, nextFrame + 0);
1097                                                 break;
1098
1099                                         case PHPDBGBase.FRAME_SRCLINESINFO:
1100                                                 break;
1101
1102                                         case PHPDBGBase.FRAME_SRCCTXINFO:
1103                                                 break;
1104
1105                                         case PHPDBGBase.FRAME_LOG:
1106                                                 break;
1107
1108                                         case PHPDBGBase.FRAME_PROF:
1109                                                 break;
1110
1111                                         case PHPDBGBase.FRAME_PROF_C:
1112                                                 break;
1113
1114                                         case PHPDBGBase.FRAME_SET_OPT:
1115                                                 break;
1116                                 }
1117
1118                                 nextFrame += dbg_frame[1];                                                      // go to next frame
1119                         }
1120
1121                         // Now process command
1122                         switch(cmdReceived) {
1123                                 case PHPDBGBase.DBGC_REPLY:
1124                                         break;
1125
1126                                 case PHPDBGBase.DBGC_STARTUP:
1127                                         break;
1128
1129                                 case PHPDBGBase.DBGC_END:
1130                                          sessionEnded = true;
1131                                          this.proxy.setTerminated();
1132                                         break;
1133
1134                                 case PHPDBGBase.DBGC_BREAKPOINT:
1135                                         BPUnderHit   = getBPUnderHit ();
1136                                         updateStackFrameList (stackList);
1137                                         break;
1138
1139                                 case PHPDBGBase.DBGC_STEPINTO_DONE:
1140                                 case PHPDBGBase.DBGC_STEPOVER_DONE:
1141                                 case PHPDBGBase.DBGC_STEPOUT_DONE:
1142                                 case PHPDBGBase.DBGC_EMBEDDED_BREAK:
1143                                 case PHPDBGBase.DBGC_PAUSE:
1144                                         BPUnderHit   = 1;
1145                                         updateStackFrameList (stackList);
1146                                         break;
1147
1148                                 case PHPDBGBase.DBGC_ERROR:
1149                                         stackList.clear ();
1150                                         updateStackFrameList (stackList);
1151                                         break;
1152
1153                                 case PHPDBGBase.DBGC_LOG:
1154                                         break;
1155
1156                                 case PHPDBGBase.DBGC_SID:
1157                                         break;
1158                         }
1159                 }
1160
1161                 return cmdReceived;                                         // Return the command we received with this block
1162         }
1163
1164     /**
1165      *
1166      */
1167
1168         public PHPStackFrame[] getStackList() {
1169                 return DBGStackList;
1170         }
1171
1172         /**
1173          * Reads from input buffer (response sent from DBG) the given number of chars
1174          * into frame buffer.
1175          *
1176          * @param buffer  The frame buffer where to store the read data from DBG.
1177          * @param bytes   The number of bytes (chars) which are to read from input stream.
1178          * @return        The number of bytes actually read.
1179          */
1180         private int readInput (char[] buffer, int bytes) throws IOException {
1181                 int bytesRead = 0;                                                                                      // Reset the bytes read counter
1182
1183                 for (int i = 0; i < bytes; i++) {                           // For the number of bytes we should read
1184                         if (in.ready ()) {                                                                              // If input stream is ready for reading
1185                                 buffer[i] = (char) (in.read () & 0x00FF);           // Read a char and store only the least significant 8-bits
1186                                 bytesRead++;                                        // Increment the bytes read counter
1187                         }
1188                         else {                                                  // Input stream is not ready
1189                                 break;                                              // Break the loop
1190                         }
1191                 }
1192
1193                 return bytesRead;                                                                                       // Return the number of bytes actually read
1194         }
1195
1196         /**
1197          * PHPProxy could stop the waiting for a response with this method.
1198          *
1199          */
1200         public void setShouldStop () {
1201                 this.shouldStop = true;
1202         }
1203
1204         /**
1205          * @param milliseconds The maximum time in milliseconds we wait for something
1206          *                     to be send from DBG.
1207          * @return             - true if something was received from DBG
1208          *                                         - false if nothing was send from DBG within the given time
1209          *
1210          */
1211         public boolean waitResponse (long milliseconds) throws IOException {
1212                 long timeout;
1213
1214                 timeout = System.currentTimeMillis () + milliseconds;           // Calculate the system time till we wait.
1215
1216                 while (System.currentTimeMillis () < timeout) {             // Is waiting time running out?
1217                         if (in.ready () || shouldStop) {                        //  No, so did we get something or should we stop now
1218                                 break;                                              //   Yes, break the waiting
1219                         }
1220                 }
1221
1222                 return in.ready ();                                         // true if we got something from DBG
1223         }
1224 }