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* src/bdf/bdflib.c (ERRMSG4): New macro. 

(_bdf_parse_glyphs): Handle invalid BBX values.

* include/freetype/fterrdef.h (FT_Err_Bbx_Too_Big): New error
macro.
This commit is contained in:
Werner Lemberg 2006-03-26 07:19:07 +00:00
parent b6f6d2479a
commit 26170df08b
3 changed files with 25 additions and 2 deletions
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8
ChangeLog
View File

@ -1,3 +1,11 @@
2006-03-26 Werner Lemberg <wl@gnu.org>
* src/bdf/bdflib.c (ERRMSG4): New macro.
(_bdf_parse_glyphs): Handle invalid BBX values.
* include/freetype/fterrdef.h (FT_Err_Bbx_Too_Big): New error
macro.
2006-03-23 Werner Lemberg <wl@gnu.org>
* docs/CHANGES: Updated.

4
include/freetype/fterrdef.h
View File

@ -4,7 +4,7 @@
/* */
/* FreeType error codes (specification). */
/* */
/* Copyright 2002, 2004 by */
/* Copyright 2002, 2004, 2006 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -226,6 +226,8 @@
"`ENCODING' field missing" )
FT_ERRORDEF_( Missing_Bbx_Field, 0xB6, \
"`BBX' field missing" )
FT_ERRORDEF_( Bbx_Too_Big, 0xB7, \
"`BBX' too big" )
/* END */

15
src/bdf/bdflib.c
View File

@ -1092,6 +1092,7 @@
#define ERRMSG1 "[line %ld] Missing \"%s\" line.\n"
#define ERRMSG2 "[line %ld] Font header corrupted or missing fields.\n"
#define ERRMSG3 "[line %ld] Font glyphs corrupted or missing fields.\n"
#define ERRMSG4 "[line %ld] BBX too big.\n"
static FT_Error
@ -1814,6 +1815,9 @@
/* And finally, gather up the bitmap. */
if ( ft_memcmp( line, "BITMAP", 6 ) == 0 )
{
unsigned long bitmap_size;
if ( !( p->flags & _BDF_BBX ) )
{
/* Missing BBX field. */
@ -1824,7 +1828,16 @@
/* Allocate enough space for the bitmap. */
glyph->bpr = ( glyph->bbx.width * p->font->bpp + 7 ) >> 3;
glyph->bytes = (unsigned short)( glyph->bpr * glyph->bbx.height );
bitmap_size = glyph->bpr * glyph->bbx.height;
if ( bitmap_size > 0xFFFFU )
{
FT_ERROR(( "_bdf_parse_glyphs: " ERRMSG4, lineno ));
error = BDF_Err_Bbx_Too_Big;
goto Exit;
}
else
glyph->bytes = (unsigned short)bitmap_size;
if ( FT_NEW_ARRAY( glyph->bitmap, glyph->bytes ) )
goto Exit;