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* src/type1/*: Clean up interface.

Browse Source 
Ensure that all driver functions use the signature of the service or driver.
This avoids pointer mismatches, which are technically undefined behaviour.
Recent compilers are more picky in catching them as part of Control Flow
Integrity tests.
gsoc-anurag-2023-docs-final
Werner Lemberg 2 years ago
parent 3a85bf0b3f
commit 7cc5dfa297
4 changed files with 67 additions and 52 deletions
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  1. 27
      src/type1/t1driver.c
  2. 68
      src/type1/t1load.c
  3. 22
      src/type1/t1load.h
  4. 2
      src/type1/t1objs.c

27
src/type1/t1driver.c
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@ -56,28 +56,32 @@
*
*/
static FT_Error
t1_get_glyph_name( T1_Face face,
FT_CALLBACK_DEF( FT_Error )
t1_get_glyph_name( FT_Face face, /* T1_Face */
FT_UInt glyph_index,
FT_Pointer buffer,
FT_UInt buffer_max )
{
FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max );
T1_Face t1face = (T1_Face)face;
FT_STRCPYN( buffer, t1face->type1.glyph_names[glyph_index], buffer_max );
return FT_Err_Ok;
}
static FT_UInt
t1_get_name_index( T1_Face face,
FT_CALLBACK_DEF( FT_UInt )
t1_get_name_index( FT_Face face, /* T1_Face */
const FT_String* glyph_name )
{
FT_Int i;
T1_Face t1face = (T1_Face)face;
FT_Int i;
for ( i = 0; i < face->type1.num_glyphs; i++ )
for ( i = 0; i < t1face->type1.num_glyphs; i++ )
{
FT_String* gname = face->type1.glyph_names[i];
FT_String* gname = t1face->type1.glyph_names[i];
if ( !ft_strcmp( glyph_name, gname ) )
@ -101,9 +105,12 @@
*/
static const char*
t1_get_ps_name( T1_Face face )
t1_get_ps_name( FT_Face face ) /* T1_Face */
{
return (const char*) face->type1.font_name;
T1_Face t1face = (T1_Face)face;
return (const char*) t1face->type1.font_name;
}

68
src/type1/t1load.c
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@ -174,10 +174,11 @@
FT_LOCAL_DEF( FT_Error )
T1_Get_Multi_Master( T1_Face face,
T1_Get_Multi_Master( FT_Face face, /* T1_Face */
FT_Multi_Master* master )
{
PS_Blend blend = face->blend;
T1_Face t1face = (T1_Face)face;
PS_Blend blend = t1face->blend;
FT_UInt n;
FT_Error error;
@ -285,16 +286,17 @@
* arguments needed by the GX var distortable fonts.
*/
FT_LOCAL_DEF( FT_Error )
T1_Get_MM_Var( T1_Face face,
T1_Get_MM_Var( FT_Face face, /* T1_Face */
FT_MM_Var* *master )
{
FT_Memory memory = face->root.memory;
FT_MM_Var *mmvar = NULL;
T1_Face t1face = (T1_Face)face;
FT_Memory memory = FT_FACE_MEMORY( face );
FT_MM_Var *mmvar = NULL;
FT_Multi_Master mmaster;
FT_Error error;
FT_UInt i;
FT_Fixed axiscoords[T1_MAX_MM_AXIS];
PS_Blend blend = face->blend;
PS_Blend blend = t1face->blend;
FT_UShort* axis_flags;
FT_Offset mmvar_size;
@ -438,20 +440,21 @@
FT_LOCAL_DEF( FT_Error )
T1_Set_MM_Blend( T1_Face face,
T1_Set_MM_Blend( FT_Face face, /* T1_Face */
FT_UInt num_coords,
FT_Fixed* coords )
{
return t1_set_mm_blend( face, num_coords, coords );
return t1_set_mm_blend( (T1_Face)face, num_coords, coords );
}
FT_LOCAL_DEF( FT_Error )
T1_Get_MM_Blend( T1_Face face,
T1_Get_MM_Blend( FT_Face face, /* T1_Face */
FT_UInt num_coords,
FT_Fixed* coords )
{
PS_Blend blend = face->blend;
T1_Face t1face = (T1_Face)face;
PS_Blend blend = t1face->blend;
FT_Fixed axiscoords[4];
FT_UInt i, nc;
@ -482,11 +485,12 @@
FT_LOCAL_DEF( FT_Error )
T1_Set_MM_WeightVector( T1_Face face,
T1_Set_MM_WeightVector( FT_Face face, /* T1_Face */
FT_UInt len,
FT_Fixed* weightvector )
{
PS_Blend blend = face->blend;
T1_Face t1face = (T1_Face)face;
PS_Blend blend = t1face->blend;
FT_UInt i, n;
@ -517,11 +521,12 @@
FT_LOCAL_DEF( FT_Error )
T1_Get_MM_WeightVector( T1_Face face,
T1_Get_MM_WeightVector( FT_Face face, /* T1_Face */
FT_UInt* len,
FT_Fixed* weightvector )
{
PS_Blend blend = face->blend;
T1_Face t1face = (T1_Face)face;
PS_Blend blend = t1face->blend;
FT_UInt i;
@ -546,12 +551,13 @@
FT_LOCAL_DEF( FT_Error )
T1_Set_MM_Design( T1_Face face,
T1_Set_MM_Design( FT_Face face, /* T1_Face */
FT_UInt num_coords,
FT_Long* coords )
{
T1_Face t1face = (T1_Face)face;
FT_Error error;
PS_Blend blend = face->blend;
PS_Blend blend = t1face->blend;
FT_UInt n;
FT_Fixed final_blends[T1_MAX_MM_DESIGNS];
@ -617,7 +623,7 @@
final_blends[n] = the_blend;
}
error = t1_set_mm_blend( face, blend->num_axis, final_blends );
error = t1_set_mm_blend( t1face, blend->num_axis, final_blends );
if ( error )
return error;
@ -628,7 +634,7 @@
/* MM fonts don't have named instances, so only the design is reset */
FT_LOCAL_DEF( FT_Error )
T1_Reset_MM_Blend( T1_Face face,
T1_Reset_MM_Blend( FT_Face face,
FT_UInt instance_index )
{
FT_UNUSED( instance_index );
@ -643,7 +649,7 @@
* arguments needed by the GX var distortable fonts.
*/
FT_LOCAL_DEF( FT_Error )
T1_Set_Var_Design( T1_Face face,
T1_Set_Var_Design( FT_Face face, /* T1_Face */
FT_UInt num_coords,
FT_Fixed* coords )
{
@ -662,11 +668,12 @@
FT_LOCAL_DEF( FT_Error )
T1_Get_Var_Design( T1_Face face,
T1_Get_Var_Design( FT_Face face, /* T1_Face */
FT_UInt num_coords,
FT_Fixed* coords )
{
PS_Blend blend = face->blend;
T1_Face t1face = (T1_Face)face;
PS_Blend blend = t1face->blend;
FT_Fixed axiscoords[4];
FT_UInt i, nc;
@ -698,10 +705,11 @@
FT_LOCAL_DEF( void )
T1_Done_Blend( T1_Face face )
T1_Done_Blend( FT_Face face ) /* T1_Face */
{
FT_Memory memory = face->root.memory;
PS_Blend blend = face->blend;
T1_Face t1face = (T1_Face)face;
FT_Memory memory = FT_FACE_MEMORY( face );
PS_Blend blend = t1face->blend;
if ( blend )
@ -746,7 +754,7 @@
dmap->num_points = 0;
}
FT_FREE( face->blend );
FT_FREE( t1face->blend );
}
}
@ -2548,7 +2556,7 @@
{
FT_ERROR(( "T1_Open_Face:"
" number-of-designs != 2 ^^ number-of-axes\n" ));
T1_Done_Blend( face );
T1_Done_Blend( FT_FACE( face ) );
}
if ( face->blend &&
@ -2568,15 +2576,15 @@
/* font as a normal PS font */
if ( face->blend &&
( !face->blend->num_designs || !face->blend->num_axis ) )
T1_Done_Blend( face );
T1_Done_Blend( FT_FACE( face ) );
/* the font may have no valid WeightVector */
if ( face->blend && !face->blend->weight_vector )
T1_Done_Blend( face );
T1_Done_Blend( FT_FACE( face ) );
/* the font may have no valid BlendDesignPositions */
if ( face->blend && !face->blend->design_pos[0] )
T1_Done_Blend( face );
T1_Done_Blend( FT_FACE( face ) );
/* the font may have no valid BlendDesignMap */
if ( face->blend )
@ -2587,7 +2595,7 @@
for ( i = 0; i < face->blend->num_axis; i++ )
if ( !face->blend->design_map[i].num_points )
{
T1_Done_Blend( face );
T1_Done_Blend( FT_FACE( face ) );
break;
}
}

22
src/type1/t1load.h
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@ -66,52 +66,52 @@ FT_BEGIN_HEADER
#ifndef T1_CONFIG_OPTION_NO_MM_SUPPORT
FT_LOCAL( FT_Error )
T1_Get_Multi_Master( T1_Face face,
T1_Get_Multi_Master( FT_Face face,
FT_Multi_Master* master );
FT_LOCAL( FT_Error )
T1_Get_MM_Var( T1_Face face,
T1_Get_MM_Var( FT_Face face,
FT_MM_Var* *master );
FT_LOCAL( FT_Error )
T1_Set_MM_Blend( T1_Face face,
T1_Set_MM_Blend( FT_Face face,
FT_UInt num_coords,
FT_Fixed* coords );
FT_LOCAL( FT_Error )
T1_Get_MM_Blend( T1_Face face,
T1_Get_MM_Blend( FT_Face face,
FT_UInt num_coords,
FT_Fixed* coords );
FT_LOCAL( FT_Error )
T1_Set_MM_Design( T1_Face face,
T1_Set_MM_Design( FT_Face face,
FT_UInt num_coords,
FT_Long* coords );
FT_LOCAL( FT_Error )
T1_Reset_MM_Blend( T1_Face face,
T1_Reset_MM_Blend( FT_Face face,
FT_UInt instance_index );
FT_LOCAL( FT_Error )
T1_Get_Var_Design( T1_Face face,
T1_Get_Var_Design( FT_Face face,
FT_UInt num_coords,
FT_Fixed* coords );
FT_LOCAL( FT_Error )
T1_Set_Var_Design( T1_Face face,
T1_Set_Var_Design( FT_Face face,
FT_UInt num_coords,
FT_Fixed* coords );
FT_LOCAL( void )
T1_Done_Blend( T1_Face face );
T1_Done_Blend( FT_Face face );
FT_LOCAL( FT_Error )
T1_Set_MM_WeightVector( T1_Face face,
T1_Set_MM_WeightVector( FT_Face face,
FT_UInt len,
FT_Fixed* weightvector );
FT_LOCAL( FT_Error )
T1_Get_MM_WeightVector( T1_Face face,
T1_Get_MM_WeightVector( FT_Face face,
FT_UInt* len,
FT_Fixed* weightvector );

2
src/type1/t1objs.c
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@ -226,7 +226,7 @@
face->len_buildchar = 0;
}
T1_Done_Blend( face );
T1_Done_Blend( t1face );
face->blend = NULL;
#endif

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