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- Added a range check for the PNG grAb chunks.

Browse source 
- Fixed: AddLine() could corrupt memory if the length of the text being
  added was longer than the console buffer.
- Fixed: FTexture::GetScaled(Left|Top)Offset returned the Width and Height
  instead when the scale values were 0.
- Removed the unnecessary "mov ecx,c" from mscinlines.h:Scale().


SVN r461 (trunk)
This commit is contained in:
Randy Heit 2007-01-23 01:13:17 +00:00
parent 64ad1d14af
commit 9b72e34223
5 changed files with 30 additions and 7 deletions
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6
docs/rh-log.txt
View file

@ -1,4 +1,10 @@
January 22, 2007
- Added a range check for the PNG grAb chunks.
- Fixed: AddLine() could corrupt memory if the length of the text being
added was longer than the console buffer.
- Fixed: FTexture::GetScaled(Left|Top)Offset returned the Width and Height
instead when the scale values were 0.
- Removed the unnecessary "mov ecx,c" from mscinlines.h:Scale().
- Fixed: The simulated palette blend used when the console is down needs to
force a full screen update the next frame.
- Fixed: LocalViewPitch could overflow and wrap around when a netgame stalls.

5
src/c_console.cpp
View file

@ -637,6 +637,11 @@ static void AddLine (const char *text, bool more, int len)
TopLine = FlushLines (BufferRover, ConsoleBuffer + CONSOLESIZE);
BufferRover = ConsoleBuffer;
}
if (len >= CONSOLESIZE - 1)
{
text = text + len - CONSOLESIZE + 1;
len = CONSOLESIZE - 1;
}
TopLine = FlushLines (BufferRover, BufferRover + len + 1);
memcpy (BufferRover, text, len);
BufferRover[len] = 0;

3
src/mscinlines.h
View file

@ -23,9 +23,8 @@
__forceinline SDWORD Scale (SDWORD a, SDWORD b, SDWORD c)
{
__asm mov eax,a
__asm mov ecx,c
__asm imul b
__asm idiv ecx
__asm idiv c
}
__forceinline SDWORD MulScale (SDWORD a, SDWORD b, SDWORD c)

4
src/r_defs.h
View file

@ -652,8 +652,8 @@ public:
int GetScaledWidth () { return ScaleX ? DivScale3(Width, ScaleX) : Width; }
int GetScaledHeight () { return ScaleY ? DivScale3(Height, ScaleY) : Height; }
int GetScaledLeftOffset () { return ScaleX ? DivScale3(LeftOffset, ScaleX) : Width; }
int GetScaledTopOffset () { return ScaleY ? DivScale3(TopOffset, ScaleY) : Height; }
int GetScaledLeftOffset () { return ScaleX ? DivScale3(LeftOffset, ScaleX) : LeftOffset; }
int GetScaledTopOffset () { return ScaleY ? DivScale3(TopOffset, ScaleY) : TopOffset; }
virtual void SetFrontSkyLayer();

19
src/textures/pngtexture.cpp
View file

@ -154,10 +154,23 @@ FPNGTexture::FPNGTexture (FileReader &lump, int lumpnum, int width, int height,
// This is like GRAB found in an ILBM, except coordinates use 4 bytes
{
DWORD hotx, hoty;
int ihotx, ihoty;
lump >> hotx >> hoty;
LeftOffset = BigLong((int)hotx);
TopOffset = BigLong((int)hoty);
ihotx = BigLong((int)hotx);
ihoty = BigLong((int)hoty);
if (ihotx < -32768 || ihotx > 32767)
{
Printf ("X-Offset for PNG texture %s is bad: %d (0x%08x)\n", Wads.GetLumpFullName (lumpnum), ihotx, ihotx);
ihotx = 0;
}
if (ihoty < -32768 || ihoty > 32767)
{
Printf ("Y-Offset for PNG texture %s is bad: %d (0x%08x)\n", Wads.GetLumpFullName (lumpnum), ihoty, ihoty);
ihoty = 0;
}
LeftOffset = (int)ihotx;
TopOffset = (int)ihoty;
}
break;