forked from DNSCrypt/dnscrypt-proxy
/
plugin_block_undelegated.go
199 lines (190 loc) · 4.17 KB
/
plugin_block_undelegated.go
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package main
import (
"github.com/k-sone/critbitgo"
"github.com/miekg/dns"
)
var undelegatedSet = []string{
"0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa",
"0.in-addr.arpa",
"1",
"1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa",
"10.in-addr.arpa",
"100.100.in-addr.arpa",
"100.51.198.in-addr.arpa",
"101.100.in-addr.arpa",
"102.100.in-addr.arpa",
"103.100.in-addr.arpa",
"104.100.in-addr.arpa",
"105.100.in-addr.arpa",
"106.100.in-addr.arpa",
"107.100.in-addr.arpa",
"108.100.in-addr.arpa",
"109.100.in-addr.arpa",
"110.100.in-addr.arpa",
"111.100.in-addr.arpa",
"112.100.in-addr.arpa",
"113.0.203.in-addr.arpa",
"113.100.in-addr.arpa",
"114.100.in-addr.arpa",
"115.100.in-addr.arpa",
"116.100.in-addr.arpa",
"117.100.in-addr.arpa",
"118.100.in-addr.arpa",
"119.100.in-addr.arpa",
"120.100.in-addr.arpa",
"121.100.in-addr.arpa",
"122.100.in-addr.arpa",
"123.100.in-addr.arpa",
"124.100.in-addr.arpa",
"125.100.in-addr.arpa",
"126.100.in-addr.arpa",
"127.100.in-addr.arpa",
"127.in-addr.arpa",
"16.172.in-addr.arpa",
"168.192.in-addr.arpa",
"17.172.in-addr.arpa",
"18.172.in-addr.arpa",
"19.172.in-addr.arpa",
"2.0.192.in-addr.arpa",
"20.172.in-addr.arpa",
"21.172.in-addr.arpa",
"22.172.in-addr.arpa",
"23.172.in-addr.arpa",
"24.172.in-addr.arpa",
"25.172.in-addr.arpa",
"254.169.in-addr.arpa",
"255.255.255.255.in-addr.arpa",
"26.172.in-addr.arpa",
"27.172.in-addr.arpa",
"28.172.in-addr.arpa",
"29.172.in-addr.arpa",
"30.172.in-addr.arpa",
"31.172.in-addr.arpa",
"64.100.in-addr.arpa",
"65.100.in-addr.arpa",
"66.100.in-addr.arpa",
"67.100.in-addr.arpa",
"68.100.in-addr.arpa",
"69.100.in-addr.arpa",
"70.100.in-addr.arpa",
"71.100.in-addr.arpa",
"72.100.in-addr.arpa",
"73.100.in-addr.arpa",
"74.100.in-addr.arpa",
"75.100.in-addr.arpa",
"76.100.in-addr.arpa",
"77.100.in-addr.arpa",
"78.100.in-addr.arpa",
"79.100.in-addr.arpa",
"8.b.d.0.1.0.0.2.ip6.arpa",
"8.e.f.ip6.arpa",
"80.100.in-addr.arpa",
"81.100.in-addr.arpa",
"82.100.in-addr.arpa",
"83.100.in-addr.arpa",
"84.100.in-addr.arpa",
"85.100.in-addr.arpa",
"86.100.in-addr.arpa",
"87.100.in-addr.arpa",
"88.100.in-addr.arpa",
"89.100.in-addr.arpa",
"9.e.f.ip6.arpa",
"90.100.in-addr.arpa",
"91.100.in-addr.arpa",
"92.100.in-addr.arpa",
"93.100.in-addr.arpa",
"94.100.in-addr.arpa",
"95.100.in-addr.arpa",
"96.100.in-addr.arpa",
"97.100.in-addr.arpa",
"98.100.in-addr.arpa",
"99.100.in-addr.arpa",
"a.e.f.ip6.arpa",
"airdream",
"api",
"b.e.f.ip6.arpa",
"bbrouter",
"belkin",
"bind",
"blinkap",
"corp",
"d.f.ip6.arpa",
"davolink",
"dearmyrouter",
"dhcp",
"dlink",
"domain",
"envoy",
"example",
"f.f.ip6.arpa",
"grp",
"gw==",
"home",
"hub",
"internal",
"intra",
"intranet",
"invalid",
"ksyun",
"lan",
"loc",
"local",
"localdomain",
"localhost",
"localnet",
"modem",
"mynet",
"myrouter",
"novalocal",
"onion",
"openstacklocal",
"priv",
"private",
"prv",
"router",
"telus",
"test",
"totolink",
"wlan_ap",
"workgroup",
"zghjccbob3n0",
}
type PluginBlockUndelegated struct {
suffixes *critbitgo.Trie
}
func (plugin *PluginBlockUndelegated) Name() string {
return "block_undelegated"
}
func (plugin *PluginBlockUndelegated) Description() string {
return "Block undelegated DNS names"
}
func (plugin *PluginBlockUndelegated) Init(proxy *Proxy) error {
suffixes := critbitgo.NewTrie()
for _, line := range undelegatedSet {
pattern := StringReverse(line)
suffixes.Insert([]byte(pattern), true)
}
plugin.suffixes = suffixes
return nil
}
func (plugin *PluginBlockUndelegated) Drop() error {
return nil
}
func (plugin *PluginBlockUndelegated) Reload() error {
return nil
}
func (plugin *PluginBlockUndelegated) Eval(pluginsState *PluginsState, msg *dns.Msg) error {
revQname := StringReverse(pluginsState.qName)
match, _, found := plugin.suffixes.LongestPrefix([]byte(revQname))
if !found {
return nil
}
if len(match) == len(revQname) || revQname[len(match)] == '.' {
synth := EmptyResponseFromMessage(msg)
synth.Rcode = dns.RcodeNameError
pluginsState.synthResponse = synth
pluginsState.action = PluginsActionSynth
pluginsState.returnCode = PluginsReturnCodeSynth
}
return nil
}