coredns/plugin/forward/fuzz.go
Catena cyber 31ff926ea1
fuzz: fix forward plugin target (#6115)
Signed-off-by: Philippe Antoine <contact@catenacyber.fr>
2023-05-25 09:09:56 -04:00

35 lines
720 B
Go

//go:build gofuzz
package forward
import (
"github.com/coredns/coredns/plugin/pkg/dnstest"
"github.com/coredns/coredns/plugin/pkg/fuzz"
"github.com/coredns/coredns/plugin/pkg/proxy"
"github.com/miekg/dns"
)
var f *Forward
// abuse init to setup an environment to test against. This start another server to that will
// reflect responses.
func init() {
f = New()
s := dnstest.NewServer(r{}.reflectHandler)
f.SetProxy(proxy.NewProxy(s.Addr, "tcp"))
f.SetProxy(proxy.NewProxy(s.Addr, "udp"))
}
// Fuzz fuzzes forward.
func Fuzz(data []byte) int {
return fuzz.Do(f, data)
}
type r struct{}
func (r r) reflectHandler(w dns.ResponseWriter, req *dns.Msg) {
m := new(dns.Msg)
m.SetReply(req)
w.WriteMsg(m)
}