40 строки
888 B
Go
40 строки
888 B
Go
// Package cdns provides functionality.
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package cdns
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import (
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"errors"
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"strconv"
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"github.com/miekg/dns"
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"rsgit.ru/rsmon/rsmon/internal/netaddr"
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)
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// FetchARecords provides functionality.
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func FetchARecords(zone, ns string) ([]NSRecord, error) {
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config := dns.ClientConfig{Servers: []string{ns}}
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c := new(dns.Client)
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m := new(dns.Msg)
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m.SetQuestion(zone, dns.TypeA)
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m.RecursionDesired = true
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r, _, err := c.Exchange(m, config.Servers[0]+":53")
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if err != nil {
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return nil, err
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}
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if r.Rcode != dns.RcodeSuccess {
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return nil, errors.New("bad rcode: " + strconv.Itoa(r.Rcode))
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}
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var result []NSRecord
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for _, a := range r.Answer {
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if ar, ok := a.(*dns.A); ok {
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// spew.Dump(ar)
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val := netaddr.Inet{Inet: ar.A}
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result = append(result, NSRecord{Name: a.Header().Name, Kind: "A", Value: val})
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// fmt.Printf("%s\n", mx.String())
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}
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}
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return result, nil
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}
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