/
arbitrary.go
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/
arbitrary.go
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// Copyright (C) 2020-2021, IrineSistiana
//
// This file is part of mosdns.
//
// mosdns is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// mosdns is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
package arbitrary
import (
"context"
"github.com/IrineSistiana/mosdns/dispatcher/handler"
arb "github.com/IrineSistiana/mosdns/dispatcher/pkg/arbitrary"
)
const PluginType = "arbitrary"
func init() {
handler.RegInitFunc(PluginType, Init, func() interface{} { return new(Args) })
}
var _ handler.ESExecutablePlugin = (*arbitraryPlugin)(nil)
type Args struct {
RR []string `yaml:"rr"`
}
type arbitraryPlugin struct {
*handler.BP
arbitrary *arb.Arbitrary
}
func Init(bp *handler.BP, args interface{}) (p handler.Plugin, err error) {
return newArb(bp, args.(*Args))
}
func newArb(bp *handler.BP, args *Args) (*arbitraryPlugin, error) {
a := arb.NewArbitrary()
if err := a.BatchLoad(args.RR); err != nil {
return nil, err
}
return &arbitraryPlugin{
BP: bp,
arbitrary: a,
}, nil
}
func (a *arbitraryPlugin) ExecES(_ context.Context, qCtx *handler.Context) (earlyStop bool, err error) {
if r := a.arbitrary.LookupMsg(qCtx.Q()); r != nil {
qCtx.SetResponse(r, handler.ContextStatusResponded)
return true, nil
}
return false, nil
}