forked from DNSCrypt/dnscrypt-proxy
/
plugin_block_unqualified.go
47 lines (37 loc) · 1.01 KB
/
plugin_block_unqualified.go
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package main
import (
"strings"
"github.com/miekg/dns"
)
type PluginBlockUnqualified struct {
}
func (plugin *PluginBlockUnqualified) Name() string {
return "block_unqualified"
}
func (plugin *PluginBlockUnqualified) Description() string {
return "Block unqualified DNS names"
}
func (plugin *PluginBlockUnqualified) Init(proxy *Proxy) error {
return nil
}
func (plugin *PluginBlockUnqualified) Drop() error {
return nil
}
func (plugin *PluginBlockUnqualified) Reload() error {
return nil
}
func (plugin *PluginBlockUnqualified) Eval(pluginsState *PluginsState, msg *dns.Msg) error {
question := msg.Question[0]
if question.Qclass != dns.ClassINET || (question.Qtype != dns.TypeA && question.Qtype != dns.TypeAAAA) {
return nil
}
if strings.IndexByte(pluginsState.qName, '.') >= 0 {
return nil
}
synth := EmptyResponseFromMessage(msg)
synth.Rcode = dns.RcodeNameError
pluginsState.synthResponse = synth
pluginsState.action = PluginsActionSynth
pluginsState.returnCode = PluginsReturnCodeSynth
return nil
}