TrueCloudLab/coredns
16
0
Fork 2
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions

plugin/erratic: add axfr support (#1977)

Browse source 
* plugin/erratic: add axfr support

Add support for axfr. This to fix and test long standing axfr issues
that are hard to test if we don't support it directly in coredns.

The most intriguing feature is withholding the last SOA from a response
so the client needs to wait; drop (no reply) and delay is also
supported. All TTLs are set to zero.

Add simple tests that checks if first record is a SOA.

Signed-off-by: Miek Gieben <miek@miek.nl>

* more test coverage

Signed-off-by: Miek Gieben <miek@miek.nl>
This commit is contained in:
Miek Gieben 2018-07-20 10:25:54 +01:00 • committed by GitHub
parent f3134da45e
commit d998aa6c25
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
4 changed files with 99 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

26
plugin/erratic/erratic.go
View file

@ -61,14 +61,26 @@ func (e *Erratic) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg
rr := *(rrAAAA.(*dns.AAAA))
rr.Header().Name = state.QName()
m.Answer = append(m.Answer, &rr)
default:
if !drop {
if delay {
time.Sleep(e.duration)
}
// coredns will return error.
return dns.RcodeServerFailure, nil
case dns.TypeAXFR:
if drop {
return 0, nil
}
if delay {
time.Sleep(e.duration)
}
xfr(state, trunc)
return 0, nil
default:
if drop {
return 0, nil
}
if delay {
time.Sleep(e.duration)
}
// coredns will return error.
return dns.RcodeServerFailure, nil
}
if drop {