coredns/middleware/rewrite/name.go
John Belamaric ef315ef3e2 Rewrite edns0 (#561)
* Add edns0 code rewrite

* check arg count

* change `new`; set EDNS0 if request doesn't have it set

* change set to replace_or_append

* change to append_or_replace

* return error in new

* update documents

* fixt UT

* return error

* go fmt

* Rework for more general EDNS0 use

Also changed how rules are created and validated. Implements
EDNS0 NSID in addition to local.

* go fmt

* README updates, NSID tests and fixes

* gofmt -s -w

* Fix tests for rewrite syntax change

* Add tests, fix error message

* Review nits

* Missed on nit

* More tests, integration test, fix edns0 parse issue

* Fix README, use RewriteIgnored

* go fmt
2017-03-06 21:32:17 +00:00

24 lines
496 B
Go

package rewrite
import (
"github.com/coredns/coredns/middleware"
"github.com/miekg/dns"
)
type nameRule struct {
From, To string
}
func newNameRule(from, to string) (Rule, error) {
return &nameRule{middleware.Name(from).Normalize(), middleware.Name(to).Normalize()}, nil
}
// Rewrite rewrites the the current request.
func (rule *nameRule) Rewrite(r *dns.Msg) Result {
if rule.From == r.Question[0].Name {
r.Question[0].Name = rule.To
return RewriteDone
}
return RewriteIgnored
}