66 lines
1.7 KiB
Go
66 lines
1.7 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 resp_ip
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import (
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"github.com/IrineSistiana/mosdns/v5/pkg/matcher/netlist"
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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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"github.com/IrineSistiana/mosdns/v5/plugin/matcher/base_ip"
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"github.com/miekg/dns"
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"net"
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"net/netip"
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)
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const PluginType = "resp_ip"
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func init() {
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sequence.MustRegMatchQuickSetup(PluginType, QuickSetup)
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}
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type Args = base_ip.Args
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func QuickSetup(bq sequence.BQ, s string) (sequence.Matcher, error) {
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return base_ip.NewMatcher(bq, base_ip.ParseQuickSetupArgs(s), matchRespAddr)
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}
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func matchRespAddr(qCtx *query_context.Context, m netlist.Matcher) (bool, error) {
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r := qCtx.R()
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if r == nil {
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return false, nil
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}
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for _, rr := range r.Answer {
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var ip net.IP
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switch rr := rr.(type) {
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case *dns.A:
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ip = rr.A
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case *dns.AAAA:
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ip = rr.AAAA
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default:
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continue
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}
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addr, ok := netip.AddrFromSlice(ip)
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if ok && m.Match(addr) {
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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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