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| author |  Miek Gieben <miek@miek.nl>
| 2016-04-04 15:45:17 +0100 |
|---|---|---|
| committer | Miek Gieben <miek@miek.nl>
| 2016-04-04 15:45:17 +0100 |
| commit | 6445a3f2f019bd951ffc02b5ec86d73157f512c2 (patch) | |
| tree | 412eb10f7ea2bd27a3592bd3ea6c4a3ce5b177e4 /middleware/chaos | |
| parent | 45ac2dd0c007901ad7557c1f703bf3da87b26b45 (diff) | |
| download | coredns-6445a3f2f019bd951ffc02b5ec86d73157f512c2.tar.gz coredns-6445a3f2f019bd951ffc02b5ec86d73157f512c2.tar.zst coredns-6445a3f2f019bd951ffc02b5ec86d73157f512c2.zip | |
Cleanup docs and the chaos middleware
Make the CH middleware actually work. Needs a bit of a hack to route
the fake version.bind and friends zone to the correct handler. Fiddle
with the order in directive.go so that CH queries get logged as well.
Secondly add class rewriting to the rewrite middleware handler and also
log the class by default.
Diffstat (limited to 'middleware/chaos')
| -rw-r--r-- | middleware/chaos/README.md | 17 | ||||
| -rw-r--r-- | middleware/chaos/chaos.go | 3 |
2 files changed, 10 insertions, 10 deletions
diff --git a/middleware/chaos/README.md b/middleware/chaos/README.md index 45d022fce..1720e918a 100644 --- a/middleware/chaos/README.md +++ b/middleware/chaos/README.md @@ -1,6 +1,7 @@ # chaos -`chaos` +The `chaos` middleware allows CoreDNS to response to TXT queries in CH class. +Useful for retrieving version or author information from the server. ## Syntax @@ -11,16 +12,12 @@ chaos [version] [authors...] * `version` the version to return, defaults to CoreDNS. * `authors` what authors to return. No default. +Note this middleware can only be specified for a zone once. This is because it hijacks +the zones `version.bind`, `version.server`, `authors.bind`, `hostname.bind` and +`id.server`, which means it can only be routed to one middleware. + ## Examples ~~~ -etcd { - path /skydns - endpoint endpoint... - stubzones -} +chaos CoreDNS-001 "Miek Gieben" miek@miek.nl ~~~ - -* `path` /skydns -* `endpoint` endpoints... -* `stubzones` diff --git a/middleware/chaos/chaos.go b/middleware/chaos/chaos.go index f668d9a4d..f1725495f 100644 --- a/middleware/chaos/chaos.go +++ b/middleware/chaos/chaos.go @@ -22,7 +22,10 @@ func (c Chaos) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg) ( if state.QClass() != dns.ClassCHAOS || state.QType() != dns.TypeTXT { return c.Next.ServeDNS(ctx, w, r) } + m := new(dns.Msg) + m.SetReply(r) + hdr := dns.RR_Header{Name: state.QName(), Rrtype: dns.TypeTXT, Class: dns.ClassCHAOS, Ttl: 0} switch state.Name() { default: |