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Disable transitional IDN rules, accept only sane names

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Transitional encoding accepts every emoticon you can think about.
Because setlocale were not enabled before, IDN 2003 input was not
accepted by dnsmasq. It makes no sense therefore to maintain backward
compatibility. Accept only proper encoded unicode names and reject
random unicode characters.

Signed-off-by: Petr Menšík <pemensik@redhat.com>
This commit is contained in:
Petr Menšík
2021-09-30 22:19:45 +02:00
committed by Simon Kelley
parent ad32ca18a7
commit 39a625ff72
1 changed files with 0 additions and 2 deletions
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2
src/util.c
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@@ -233,8 +233,6 @@ char *canonicalise(char *in, int *nomem)
{ {
# ifdef HAVE_LIBIDN2 # ifdef HAVE_LIBIDN2
rc = idn2_to_ascii_lz(in, &ret, IDN2_NONTRANSITIONAL); rc = idn2_to_ascii_lz(in, &ret, IDN2_NONTRANSITIONAL);
if (rc == IDN2_DISALLOWED)
rc = idn2_to_ascii_lz(in, &ret, IDN2_TRANSITIONAL);
# else # else
rc = idna_to_ascii_lz(in, &ret, 0); rc = idna_to_ascii_lz(in, &ret, 0);
# endif # endif