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plugin/file: fix panic in miekg/dns.CompareDomainName() (#3337)

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Signed-off-by: utrehubenka <utrehubenka@infoblox.com>
This commit is contained in:
Uladzimir Trehubenka
2019-10-01 15:22:42 +03:00
committed by Miek Gieben
parent 4ffbee299a
commit 7b69dfebb5
1 changed files with 1 additions and 1 deletions
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plugin/file/lookup.go
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@@ -372,7 +372,7 @@ func (z *Zone) additionalProcessing(answer []dns.RR, do bool) (extra []dns.RR) {
case *dns.MX:
name = x.Mx
}
if !dns.IsSubDomain(z.origin, name) {
if len(name) == 0 || !dns.IsSubDomain(z.origin, name) {
continue
}