tree b56cdd829987496cbb0d226910916547b4569c89
parent ff723d8649d317d3b416ef8a9ad75004d54aefc6
author Gilles Peskine <Gilles.Peskine@arm.com> 1672946937 +0100
committer Gilles Peskine <Gilles.Peskine@arm.com> 1673385207 +0100

Reject invalid UTF-8 and weird characters in text files

Reject "weird" characters in text files, especially control characters that
might be escape sequences or that might cause other text to appear garbled
(as in https://trojansource.codes/).

Also reject byte sequences that aren't valid UTF-8.

Accept only ASCII (except most control characters), letters, some non-ASCII
punctuation and some mathematical and technical symbols. This covers
everything that's currently present in Mbed TLS ( §áèéëñóöüłŽ–—’“”…≥).

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>