60 lines
1.5 KiB
Go
60 lines
1.5 KiB
Go
/*
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* Copyright (C) 2020-2022, IrineSistiana
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*
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* This file is part of mosdns.
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*
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* mosdns is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* mosdns is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package has_wanted_ans
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import (
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"context"
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"github.com/IrineSistiana/mosdns/v5/pkg/query_context"
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"github.com/IrineSistiana/mosdns/v5/plugin/executable/sequence"
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)
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const PluginType = "has_wanted_ans"
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func init() {
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sequence.MustRegMatchQuickSetup(PluginType, QuickSetup)
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}
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type hasQuestionAns struct{}
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func (h hasQuestionAns) Match(_ context.Context, qCtx *query_context.Context) (bool, error) {
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q := qCtx.Q()
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if len(q.Question) == 0 {
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return false, nil
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}
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r := qCtx.R()
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if r == nil || len(r.Answer) == 0 {
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return false, nil
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}
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question := q.Question[0]
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for _, rr := range r.Answer {
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h := rr.Header()
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if h.Rrtype == question.Qtype && h.Class == question.Qclass {
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return true, nil
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}
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}
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return false, nil
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}
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func QuickSetup(_ sequence.BQ, _ string) (sequence.Matcher, error) {
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return hasQuestionAns{}, nil
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}
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