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Improve handling of non-QUERY DNS requests.

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We can't answer and shouldn't forward non-QUERY DNS requests.

This patch fixes handling such requests from TCP connections; before
the connection would be closed without reply.

It also changes the RCODE in the answer from REFUSED to NOTIMP and
provides clearer logging.
This commit is contained in:
Simon Kelley
2024-12-13 23:00:21 +00:00
parent 3b74df4f55
commit ab177cb153
4 changed files with 234 additions and 207 deletions
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4
src/cache.c
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@@ -2256,12 +2256,12 @@ void log_query(unsigned int flags, char *name, union all_addr *addr, char *arg,
}
else if (flags & F_AUTH)
source = "auth";
else if (flags & F_DNSSEC)
else if (flags & F_DNSSEC)
{
source = arg;
verb = "to";
}
else if (flags & F_SERVER)
else if (flags & F_SERVER)
{
source = "forwarded";
verb = "to";