mokhtar/local-ip.sh
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return NXDOMAIN when ip can't be parsed

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m5r 2022-10-29 00:13:04 +02:00
parent 15aee08c3c
commit bb3db9be47
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1 changed files with 7 additions and 5 deletions
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12
xip/xip.go
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@ -24,7 +24,7 @@ var (
dashedIpV4Regex = regexp.MustCompile(`(?:^|(?:[\w\d])+\.)(((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\-?\b){4})($|[.-])`) dashedIpV4Regex = regexp.MustCompile(`(?:^|(?:[\w\d])+\.)(((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\-?\b){4})($|[.-])`)
) )
func (xip *Xip) handleA(question dns.Question, response *dns.Msg) *dns.A { func (xip *Xip) handleA(question dns.Question) *dns.A {
fqdn := question.Name fqdn := question.Name
for _, ipV4RE := range []*regexp.Regexp{dashedIpV4Regex, dottedIpV4Regex} { for _, ipV4RE := range []*regexp.Regexp{dashedIpV4Regex, dottedIpV4Regex} {
@ -83,12 +83,14 @@ func (xip *Xip) handleQuery(message *dns.Msg) {
for _, question := range message.Question { for _, question := range message.Question {
switch question.Qtype { switch question.Qtype {
case dns.TypeA: case dns.TypeA:
record := xip.handleA(question, message) record := xip.handleA(question)
if record != nil { if record == nil {
message.Answer = append(message.Answer, record) message.Rcode = dns.RcodeNameError
} else {
message.Ns = append(message.Ns, xip.SOARecord(question)) message.Ns = append(message.Ns, xip.SOARecord(question))
return
} }
message.Answer = append(message.Answer, record)
} }
} }
} }