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Fix CNAME wildcard in auth-mode.

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A domain can only have a CNAME if it has not other records.

Don't return a CNAME when there are records of other types on the name.
This commit is contained in:
Simon Kelley
2017-02-19 23:07:01 +00:00
parent 54bb3639d4
commit 62f9c0d470
1 changed files with 2 additions and 1 deletions
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3
src/auth.c
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@@ -518,7 +518,8 @@ size_t answer_auth(struct dns_header *header, char *limit, size_t qlen, time_t n
} while ((crecp = cache_find_by_name(crecp, name, now, F_IPV4 | F_IPV6))); } while ((crecp = cache_find_by_name(crecp, name, now, F_IPV4 | F_IPV6)));
} }
if (!found) /* Only supply CNAME if no record for any type is known. */
if (nxdomain)
{ {
/* Check for possible wildcard match against *.domain /* Check for possible wildcard match against *.domain
return length of match, to get longest. return length of match, to get longest.