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Imported from libpng-1.2.21rc2.tar

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This commit is contained in:
Glenn Randers-Pehrson
2007-09-26 19:34:29 -05:00
parent 5ecf1b53ea
commit b188d671d1
53 changed files with 265 additions and 167 deletions
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20
pngrutil.c
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@@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.2.21 [September 26, 2007]
* Last changed in libpng 1.2.21 [September 27, 2007]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1771,6 +1771,17 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* empty loop */ ;
ep++;
if (buffer + slength < ep)
{
png_warning(png_ptr, "Truncated sCAL chunk");
#if defined(PNG_FIXED_POINT_SUPPORTED) && \
!defined(PNG_FLOATING_POINT_SUPPORTED)
png_free(png_ptr, swidth);
#endif
png_free(png_ptr, buffer);
return;
}
#ifdef PNG_FLOATING_POINT_SUPPORTED
height = png_strtod(png_ptr, ep, &vp);
if (*vp)
@@ -2114,6 +2125,13 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
/* empty loop */ ;
lang_key++; /* skip NUL separator */
if (lang_key >= chunkdata + slength)
{
png_warning(png_ptr, "Truncated iTXt chunk");
png_free(png_ptr, chunkdata);
return;
}
for (text = lang_key; *text; text++)
/* empty loop */ ;
text++; /* skip NUL separator */