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Answer CNAME queries correctly.

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This commit is contained in:
Simon Kelley
2012-04-16 17:26:19 +01:00
parent e46164e0bd
commit d1c759c5c1
2 changed files with 20 additions and 0 deletions
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3
CHANGELOG
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@@ -90,6 +90,9 @@ version 2.61
Updated French translation. Thanks to Gildas Le Nadan.
Give correct from-cache answers to explict CNAME queries.
Thanks to Rob Zwissler for spotting this.
version 2.60
Fix compilation problem in Mac OS X Lion. Thanks to Olaf

17
src/rfc1035.c
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@@ -1640,6 +1640,23 @@ size_t answer_request(struct dns_header *header, char *limit, size_t qlen,
}
}
if (qtype == T_CNAME || qtype == T_ANY)
{
if ((crecp = cache_find_by_name(NULL, name, now, F_CNAME)) &&
(qtype == T_CNAME || (crecp->flags & (F_HOSTS | F_DHCP))))
{
ans = 1;
if (!dryrun)
{
log_query(crecp->flags, name, NULL, record_source(crecp->uid));
if (add_resource_record(header, limit, &trunc, nameoffset, &ansp,
crec_ttl(crecp, now), &nameoffset,
T_CNAME, C_IN, "d", cache_get_name(crecp->addr.cname.cache)))
anscount++;
}
}
}
if (qtype == T_MX || qtype == T_ANY)
{
int found = 0;