Cleaned up usage of sprintf in the codebase, changing to

BSPF_snprintf instead, which should eliminate any potential
buffer overflows.  Also moved from static arrays to stringstreams
where appropriate to make things safer and more C++ like.


git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@2263 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba

src/debugger/CartDebug.cxx

@@ -185,8 +185,8 @@ string CartDebug::toString()
     // bytes have been previously output
     if(state.rport[i] - curraddr > bytesPerLine || bytesSoFar >= 256)
     {
-      char port[50];
-      sprintf(port, "%04x: (rport = %04x, wport = %04x)\n",
+      char port[37];
+      BSPF_snprintf(port, 36, "%04x: (rport = %04x, wport = %04x)\n",
               state.rport[i], state.rport[i], state.wport[i]);
       port[2] = port[3] = 'x';
       buf << DebuggerParser::red(port);

src/debugger/CpuDebug.cxx

@@ -71,65 +71,6 @@ void CpuDebug::saveOldState()
   Debugger::set_bits(myOldState.PS, myOldState.PSbits);
 }
 
-// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-string CpuDebug::toString()
-{
-  // TODO - this doesn't seem to be used anywhere ??
-  //        if it's ever used, convert to C++ stringstream
-  string result;
-  char buf[255];
-
-  const CpuState& state = (CpuState&) getState();
-  const CpuState& oldstate = (CpuState&) getOldState();
-
-  result += "\nPC=";
-  result += myDebugger.invIfChanged(state.PC, oldstate.PC);
-  result += " A=";
-  result += myDebugger.invIfChanged(state.A, oldstate.A);
-  result += " X=";
-  result += myDebugger.invIfChanged(state.X, oldstate.X);
-  result += " Y=";
-  result += myDebugger.invIfChanged(state.Y, oldstate.Y);
-  result += " S=";
-  result += myDebugger.invIfChanged(state.SP, oldstate.SP);
-  result += " P=";
-  result += myDebugger.invIfChanged(state.PS, oldstate.PS);
-  result += "/";
-
-  // NV-BDIZC
-  buf[0] = n() ? 'N' : 'n';
-  buf[1] = v() ? 'V' : 'v';
-  buf[2] = '-';
-  buf[3] = b() ? 'B' : 'b';
-  buf[4] = d() ? 'D' : 'd';
-  buf[5] = i() ? 'I' : 'i';
-  buf[6] = z() ? 'Z' : 'z';
-  buf[7] = c() ? 'C' : 'c';
-  buf[8] = '\0';
-
-  result += buf;
-  result += "\n  FrameCyc:";
-  sprintf(buf, "%d", mySystem.cycles());
-  result += buf;
-  result += " Frame:";
-  sprintf(buf, "%d", myDebugger.tiaDebug().frameCount());
-  result += buf;
-  result += " ScanLine:";
-  sprintf(buf, "%d", myDebugger.tiaDebug().scanlines());
-  result += buf;
-  result += " Clk/Pix/Cyc:";
-  int clk = myDebugger.tiaDebug().clocksThisLine();
-  sprintf(buf, "%d/%d/%d", clk, clk-68, clk/3);
-  result += buf;
-  result += " 6502Ins:";
-  sprintf(buf, "%d", mySystem.m6502().totalInstructionCount());
-  result += buf;
-  result += "\n  ";
-
-  result += myDebugger.cartDebug().disassemble(state.PC, 1);
-  return result;
-}
-
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void CpuDebug::setPC(int pc)
 {

src/debugger/CpuDebug.hxx

@@ -50,7 +50,7 @@ class CpuDebug : public DebuggerSystem
     const DebuggerState& getOldState() { return myOldState; }
 
     void saveOldState();
-    string toString();
+    string toString() { return ""; } // Not needed, since CPU stuff is always visible
 
     // I know, we ain't supposed to do this...
     M6502& m6502() { return mySystem.m6502(); }

src/debugger/Debugger.cxx

@@ -372,22 +372,19 @@ void Debugger::reset()
 /* Element 0 of args is the address. The remaining elements are the data
    to poke, starting at the given address.
 */
-const string Debugger::setRAM(IntArray& args)
+string Debugger::setRAM(IntArray& args)
 {
-  char buf[10];
+  ostringstream buf;
 
   int count = args.size();
   int address = args[0];
-  for(int i=1; i<count; i++)
+  for(int i = 1; i < count; ++i)
     mySystem->poke(address++, args[i]);
 
-  string ret = "changed ";
-  sprintf(buf, "%d", count-1);
-  ret += buf;
-  ret += " location";
-  if(count != 0)
-    ret += "s";
-  return ret;
+  buf << "changed " << (count-1) << " location";
+  if(count != 2)
+    buf << "s";
+  return buf.str();
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

src/debugger/Debugger.hxx

@@ -296,7 +296,7 @@ class Debugger : public DialogContainer
     void reloadROM();
 
     // Set a bunch of RAM locations at once
-    const string setRAM(IntArray& args);
+    string setRAM(IntArray& args);
 
     void reset();
     void clearAllBreakPoints();

src/debugger/DebuggerParser.cxx

@@ -292,31 +292,25 @@ int DebuggerParser::decipher_arg(const string &str)
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 string DebuggerParser::showWatches()
 {
-  string ret;
-  char buf[10];
-
-  for(unsigned int i=0; i<watches.size(); i++) {
-    if(watches[i] != "") {
+  ostringstream buf;
+  for(unsigned int i = 0; i < watches.size(); i++)
+  {
+    if(watches[i] != "")
+    {
       // Clear the args, since we're going to pass them to eval()
       argStrings.clear();
       args.clear();
 
-      sprintf(buf, "%d", i+1);
       argCount = 1;
       argStrings.push_back(watches[i]);
       args.push_back(decipher_arg(argStrings[0]));
-      if(args[0] < 0) {
-        ret += "BAD WATCH ";
-        ret += buf;
-        ret += ": " + argStrings[0] + "\n";
-      } else {
-        ret += " watch #";
-        ret += buf;
-        ret += " (" + argStrings[0] + ") -> " + eval() + "\n";
+      if(args[0] < 0)
+        buf << "BAD WATCH " << (i+1) << ": " << argStrings[0] << endl;
+      else
+        buf << " watch #" << (i+1) << " (" << argStrings[0] << ") -> " << eval() << endl;
     }
   }
-  }
-  return ret;
+  return buf.str();
 }
 
 

src/debugger/DiStella.cxx

@@ -916,8 +916,8 @@ void DiStella::addEntry(CartDebug::DisasmType type)
       else if(settings.show_addresses && tag.type == CartDebug::CODE)
       {
         // Have addresses indented, to differentiate from actual labels
-        char address[8];
-        sprintf(address, " %X", tag.address);
+        char address[7];
+        BSPF_snprintf(address, 6, " %4X", tag.address);
         tag.label = address;
         tag.hllabel = false;
       }

src/debugger/TIADebug.cxx

@@ -698,14 +698,14 @@ string TIADebug::colorSwatch(uInt8 c)
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-const string audFreq(uInt8 div)
+string TIADebug::audFreq(uInt8 div)
 {
   string ret;
-  char buf[20];
+  char buf[10];
 
   double hz = 30000.0;
   if(div) hz /= div;
-  sprintf(buf, "%5.1f", hz);
+  BSPF_snprintf(buf, 9, "%5.1f", hz);
   ret += buf;
   ret += "Hz";
 

src/debugger/TIADebug.hxx

@@ -169,6 +169,7 @@ class TIADebug : public DebuggerSystem
     /** Get/set specific bits in the collision register (used by collXX_XX) */
     bool collision(int collID, int newVal);
 
+    string audFreq(uInt8 div);
     string booleanWithLabel(string label, bool value);
 
   private:

src/debugger/gui/RamWidget.cxx

@@ -303,12 +303,12 @@ void RamWidget::fillGrid(bool updateOld)
 
   // Update RAM labels
   char buf[5];
-  sprintf(buf, "%04x", state.rport[start] & 0xff00);
+  BSPF_snprintf(buf, 5, "%04X", state.rport[start] & 0xff00);
   buf[2] = buf[3] = 'x';
   myRamStart->setLabel(buf);
   for(uInt32 i = start, row = 0; i < start + 16*8; i += 16, ++row)
   {
-    sprintf(buf, "%02x:", state.rport[i] & 0x00ff);
+    BSPF_snprintf(buf, 3, "%02X:", state.rport[i] & 0x00ff);
     myRamLabels[row]->setLabel(buf);
   }
 }

src/emucore/FrameBuffer.cxx

@@ -221,7 +221,7 @@ void FrameBuffer::update()
       {
         const ConsoleInfo& info = myOSystem->console().about();
         char msg[30];
-        sprintf(msg, "%u @ %2.2ffps => %s",
+        BSPF_snprintf(msg, 29, "%u @ %2.2ffps => %s",
                 myOSystem->console().tia().scanlines(),
                 myOSystem->console().getFramerate(), info.DisplayFormat.c_str());
         myStatsMsg.surface->fillRect(0, 0, myStatsMsg.w, myStatsMsg.h, kBGColor);

src/gui/StringListWidget.cxx

@@ -79,7 +79,7 @@ void StringListWidget::drawWidget(bool hilite)
     if (_numberingMode != kListNumberingOff)
     {
       char temp[10];
-      sprintf(temp, "%2d. ", (pos + _numberingMode));
+      BSPF_snprintf(temp, 9, "%2d. ", (pos + _numberingMode));
       buffer = temp;
       s.drawString(_font, buffer, _x + 2, y, _w - 4, textColor);
     }
@@ -120,7 +120,7 @@ GUI::Rect StringListWidget::getEditRect() const
   {
     char temp[10];
     // FIXME: Assumes that all digits have the same width.
-    sprintf(temp, "%2d. ", (_list.size() - 1 + _numberingMode));
+    BSPF_snprintf(temp, 9, "%2d. ", (_list.size() - 1 + _numberingMode));
     r.left += _font->getStringWidth(temp);
   }
 	

src/gui/Widget.cxx

@@ -323,7 +323,7 @@ StaticTextWidget::StaticTextWidget(GuiObject *boss, const GUI::Font& font,
 void StaticTextWidget::setValue(int value)
 {
   char buf[256];
-  sprintf(buf, "%d", value);
+  BSPF_snprintf(buf, 255, "%d", value);
   _label = buf;
 
   setDirty(); draw();
@@ -333,6 +333,7 @@ void StaticTextWidget::setValue(int value)
 void StaticTextWidget::setLabel(const string& label)
 {
   _label = label;
+
   setDirty(); draw();
 }