mirror of
https://github.com/coredns/coredns.git
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42 lines
1.2 KiB
Go
42 lines
1.2 KiB
Go
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package sign
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import (
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"sort"
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"github.com/coredns/coredns/plugin/file"
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"github.com/coredns/coredns/plugin/file/tree"
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"github.com/miekg/dns"
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)
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// names returns the elements of the zone in nsec order. If the returned boolean is true there were
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// no other apex records than SOA and NS, which are stored separately.
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func names(origin string, z *file.Zone) ([]string, bool) {
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// if there are no apex records other than NS and SOA we'll miss the origin
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// in this list. Check the first element and if not origin prepend it.
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n := []string{}
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z.Walk(func(e *tree.Elem, _ map[uint16][]dns.RR) error {
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n = append(n, e.Name())
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return nil
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})
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if len(n) == 0 {
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return nil, false
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}
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if n[0] != origin {
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n = append([]string{origin}, n...)
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return n, true
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}
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return n, false
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}
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// NSEC returns an NSEC record according to name, next, ttl and bitmap. Note that the bitmap is sorted before use.
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func NSEC(name, next string, ttl uint32, bitmap []uint16) *dns.NSEC {
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sort.Slice(bitmap, func(i, j int) bool { return bitmap[i] < bitmap[j] })
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return &dns.NSEC{
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Hdr: dns.RR_Header{Name: name, Ttl: ttl, Rrtype: dns.TypeNSEC, Class: dns.ClassINET},
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NextDomain: next,
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TypeBitMap: bitmap,
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}
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}
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