[Git][freetype/freetype][master] [sfnt] Restrict POST version 1.0.

[Alexei Podtelezhnikov (@apodtele)]

Alexei Podtelezhnikov pushed to branch master at FreeType / FreeType

Commits:

• 4a85ff0b
  by Alexei Podtelezhnikov (Алексей Подтележников) at 2024-01-04T21:38:51-05:00

  [sfnt] Restrict POST version 1.0.
  
  A font has surfaced with `post` version 1.0 and fewer than 258 glyphs.
  Its glyphs did not correspond to their names. We now reject such `post`
  strictly following specifications.
  
  * src/sfnt/ttpost.c (tt_face_get_ps_name): Check the number of glyphs
  for version 1.0.
  

1 changed file:

• src/sfnt/ttpost.c

Changes:

src/sfnt/ttpost.c

---

...	...	@@ -436,13 +436,8 @@
436	436
437	437	format = face->postscript.FormatType;
438	438
439		- if ( format == 0x00010000L )
440		- {
441		- if ( idx < 258 ) /* paranoid checking */
442		- *PSname = MAC_NAME( idx );
443		- }
444		- else if ( format == 0x00020000L ||
445		- format == 0x00025000L )
	439	+ if ( format == 0x00020000L ||
	440	+ format == 0x00025000L )
446	441	{
447	442	TT_Post_Names names = &face->postscript_names;
448	443
...	...	@@ -466,6 +461,11 @@
466	461	}
467	462	}
468	463
	464	+ /* version 1.0 is only valid with 258 glyphs */
	465	+ else if ( format == 0x00010000L &&
	466	+ face->max_profile.numGlyphs == 258 )
	467	+ *PSname = MAC_NAME( idx );
	468	+
469	469	/* nothing to do for format == 0x00030000L */
470	470
471	471	End:

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