diff options
Diffstat (limited to 'freetype/src/cid/cidload.c')
| -rw-r--r-- | freetype/src/cid/cidload.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/freetype/src/cid/cidload.c b/freetype/src/cid/cidload.c index 44646a764..b39d6c3a6 100644 --- a/freetype/src/cid/cidload.c +++ b/freetype/src/cid/cidload.c @@ -4,7 +4,7 @@ /* */ /* CID-keyed Type1 font loader (body). */ /* */ -/* Copyright 1996-2006, 2009, 2011-2013 by */ +/* Copyright 1996-2006, 2009, 2011-2014 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -150,8 +150,6 @@ cid_parse_font_matrix( CID_Face face, CID_Parser* parser ) { - FT_Matrix* matrix; - FT_Vector* offset; CID_FaceDict dict; FT_Face root = (FT_Face)&face->root; FT_Fixed temp[6]; @@ -160,14 +158,28 @@ if ( parser->num_dict >= 0 && parser->num_dict < face->cid.num_dicts ) { + FT_Matrix* matrix; + FT_Vector* offset; + FT_Int result; + + dict = face->cid.font_dicts + parser->num_dict; matrix = &dict->font_matrix; offset = &dict->font_offset; - (void)cid_parser_to_fixed_array( parser, 6, temp, 3 ); + result = cid_parser_to_fixed_array( parser, 6, temp, 3 ); + + if ( result < 6 ) + return FT_THROW( Invalid_File_Format ); temp_scale = FT_ABS( temp[3] ); + if ( temp_scale == 0 ) + { + FT_ERROR(( "cid_parse_font_matrix: invalid font matrix\n" )); + return FT_THROW( Invalid_File_Format ); + } + /* Set Units per EM based on FontMatrix values. We set the value to */ /* 1000 / temp_scale, because temp_scale was already multiplied by */ /* 1000 (in t1_tofixed, from psobjs.c). */ @@ -182,7 +194,7 @@ temp[2] = FT_DivFix( temp[2], temp_scale ); temp[4] = FT_DivFix( temp[4], temp_scale ); temp[5] = FT_DivFix( temp[5], temp_scale ); - temp[3] = 0x10000L; + temp[3] = temp[3] < 0 ? -0x10000L : 0x10000L; } matrix->xx = temp[0]; @@ -195,8 +207,7 @@ offset->y = temp[5] >> 16; } - return FT_Err_Ok; /* this is a callback function; */ - /* we must return an error code */ + return FT_Err_Ok; } |