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hosts.go
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hosts.go
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/*
* Copyright (C) 2020-2022, 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 hosts
import (
"bytes"
"context"
"github.com/IrineSistiana/mosdns/v4/coremain"
"github.com/IrineSistiana/mosdns/v4/pkg/executable_seq"
"github.com/IrineSistiana/mosdns/v4/pkg/hosts"
"github.com/IrineSistiana/mosdns/v4/pkg/matcher/domain"
"github.com/IrineSistiana/mosdns/v4/pkg/query_context"
)
const PluginType = "hosts"
func init() {
coremain.RegNewPluginFunc(PluginType, Init, func() interface{} { return new(Args) })
}
var _ coremain.ExecutablePlugin = (*hostsPlugin)(nil)
type Args struct {
Hosts []string `yaml:"hosts"`
}
type hostsPlugin struct {
*coremain.BP
h *hosts.Hosts
}
func Init(bp *coremain.BP, args interface{}) (p coremain.Plugin, err error) {
return newHostsContainer(bp, args.(*Args))
}
func newHostsContainer(bp *coremain.BP, args *Args) (*hostsPlugin, error) {
staticMatcher := domain.NewMixMatcher[*hosts.IPs]()
staticMatcher.SetDefaultMatcher(domain.MatcherFull)
m, err := domain.BatchLoadProvider[*hosts.IPs](
args.Hosts,
staticMatcher,
hosts.ParseIPs,
bp.M().GetDataManager(),
func(b []byte) (domain.Matcher[*hosts.IPs], error) {
mixMatcher := domain.NewMixMatcher[*hosts.IPs]()
mixMatcher.SetDefaultMatcher(domain.MatcherFull)
if err := domain.LoadFromTextReader[*hosts.IPs](mixMatcher, bytes.NewReader(b), hosts.ParseIPs); err != nil {
return nil, err
}
return mixMatcher, nil
},
)
if err != nil {
return nil, err
}
return &hostsPlugin{
BP: bp,
h: hosts.NewHosts(m),
}, nil
}
func (h *hostsPlugin) Exec(ctx context.Context, qCtx *query_context.Context, next executable_seq.ExecutableChainNode) error {
r := h.h.LookupMsg(qCtx.Q())
if r != nil {
qCtx.SetResponse(r)
return nil
}
return executable_seq.ExecChainNode(ctx, qCtx, next)
}