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[cff] Don't use any values in decoder after parsing error. 

* src/cff/cffgload.c (cff_slot_load): Skip the evaluations
of the values in decoder, if cff_decoder_parse_charstrings()
returns any error.
This commit is contained in:
suzuki toshiya 2010-08-05 17:10:32 +09:00
parent 45a3c76b54
commit d9b3e39484
2 changed files with 45 additions and 32 deletions
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10
ChangeLog
View File

@ -1,3 +1,11 @@
2010-08-05 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[cff] Don't use any values in decoder after parsing error.
* src/cff/cffgload.c (cff_slot_load): Skip the evaluations
of the values in decoder, if cff_decoder_parse_charstrings()
returns any error.
2010-08-04 Werner Lemberg <wl@gnu.org>
Fix Savannah bug #30644.
@ -11,7 +19,7 @@
* devel/ftoption.h: Synchronize with
include/freetype/config/ftoption.h.
2010-08-04 Suzuki, Toshiya (鈴木俊哉) <mpsuzuki@hiroshima-u.ac.jp>
2010-08-04 suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp>
[cff] Improve stack overflow test.

19
src/cff/cffgload.c
View File

@ -2731,17 +2731,21 @@
/* now load the unscaled outline */
error = cff_get_glyph_data( face, glyph_index,
&charstring, &charstring_len );
if ( !error )
{
if ( error )
goto Glyph_Build_Finished;
error = cff_decoder_prepare( &decoder, size, glyph_index );
if ( !error )
{
if ( error )
goto Glyph_Build_Finished;
error = cff_decoder_parse_charstrings( &decoder,
charstring,
charstring_len );
cff_free_glyph_data( face, &charstring, charstring_len );
if ( error )
goto Glyph_Build_Finished;
#ifdef FT_CONFIG_OPTION_INCREMENTAL
/* Control data and length may not be available for incremental */
@ -2768,11 +2772,12 @@
glyph->root.control_len = charstring_len;
}
}
}
}
/* save new glyph tables */
Glyph_Build_Finished:
/* save new glyph tables, if no error */
if ( !error )
cff_builder_done( &decoder.builder );
/* XXX: anything to do for broken glyph entry? */
}
#ifdef FT_CONFIG_OPTION_INCREMENTAL