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Imported from libpng-1.2.33rc02.tar

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This commit is contained in:
Glenn Randers-Pehrson
2008-10-23 16:52:29 -05:00
parent 8431b2c190
commit e7324bb94f
50 changed files with 139 additions and 119 deletions
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19
pngrutil.c
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@@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.2.31 [August 19, 2008]
* Last changed in libpng 1.2.33 [October 23, 2008]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -1940,21 +1940,24 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
}
#endif
key = (png_charp)png_malloc_warn(png_ptr, length + 1);
if (key == NULL)
png_free(png_ptr,png_ptr->chunkdata);
png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
if (png_ptr->chunkdata == NULL)
{
png_warning(png_ptr, "No memory to process text chunk.");
return;
}
slength = (png_size_t)length;
png_crc_read(png_ptr, (png_bytep)key, slength);
png_crc_read(png_ptr, (png_bytep)png_ptr->chunkdata, slength);
if (png_crc_finish(png_ptr, skip))
{
png_free(png_ptr, key);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
return;
}
key = png_ptr->chunkdata;
key[slength] = 0x00;
for (text = key; *text; text++)
@@ -1968,7 +1971,8 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
if (text_ptr == NULL)
{
png_warning(png_ptr, "Not enough memory to process text chunk.");
png_free(png_ptr, key);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
return;
}
text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
@@ -1983,7 +1987,8 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
png_free(png_ptr, key);
png_free(png_ptr, png_ptr->chunkdata);
png_ptr->chunkdata = NULL;
png_free(png_ptr, text_ptr);
if (ret)
png_warning(png_ptr, "Insufficient memory to process text chunk.");