Author :
Werner Lemberg
Date :
2015-09-24 12:39:38
Hash :c409eb18 Message :[base, sfnt] Better checks for invalid cmaps (1/2).
* src/base/ftobjs.c (FT_Get_Char_Index): Don't return out-of-bounds
glyph indices.
(FT_Get_First_Char): Updated.
* src/sfnt/ttcmap.c (tt_cmap6_char_next): Don't return character
codes greater than 0xFFFF.
(tt_cmap8_char_index): Avoid integer overflow in computation of
glyph index.
(tt_cmap8_char_next): Avoid integer overflows in computation of
both next character code and glyph index.
(tt_cmap10_char_index): Fix unsigned integer logic.
(tt_cmap10_char_next): Avoid integer overflow in computation of
next character code.
(tt_cmap12_next): Avoid integer overflows in computation of both
next character code and glyph index.
(tt_cmap12_char_map_binary): Ditto.
(tt_cmap12_char_next): Simplify.
(tt_cmap13_char_map_binary): Avoid integer overflow in computation
of next character code.
(tt_cmap13_char_next): Simplify.
Werner Lemberg