tree 973755731b26a09928935bfe8751b09462f2ee07
parent 8fc6df1028ba7173fbcc467a4402bb7ef8a84f8f
author Alexei Podtelezhnikov <apodtele@gmail.com> 1679235232 -0400
committer Alexei Podtelezhnikov <apodtele@gmail.com> 1679235232 -0400

[cff] Rework the stream limit checks.

The old stream limit checks, before 6986ddac1ece, were good but
pointless for the crafted t2_strings.  Checking limits there is
not necessary as they are created to hold all data.  By using two
conditions, we can detect the actual crossing of the stream boundary
as appropriate for the stream pointer only.  The t2_strings parsing
will not be triggering these checks.

* src/cff/cffparse.c (cff_parser_within_limits): Removed.
(cff_parse_real, cff_parse_integer): Redesign the stream limit check.
(cff_parse_num, do fixed, cff_parse_fixed_dynamic): Update callers.