72 lines
1.6 KiB
Go
72 lines
1.6 KiB
Go
package file
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import (
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"sync"
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"github.com/miekg/coredns/middleware"
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"github.com/miekg/coredns/middleware/file/tree"
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"github.com/miekg/dns"
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)
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type Zone struct {
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SOA *dns.SOA
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SIG []dns.RR
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name string
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*tree.Tree
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TransferTo []string
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StartupOnce sync.Once
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TransferFrom []string
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Expired *bool
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}
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// NewZone returns a new zone.
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func NewZone(name string) *Zone {
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z := &Zone{name: dns.Fqdn(name), Tree: &tree.Tree{}, Expired: new(bool)}
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*z.Expired = false
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return z
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}
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// Copy copies a zone *without* copying the zone's content. It is not a deep copy.
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func (z *Zone) Copy() *Zone {
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z1 := NewZone(z.name)
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z1.TransferTo = z.TransferTo
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z1.TransferFrom = z.TransferFrom
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z1.Expired = z.Expired
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z1.SOA = z.SOA
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z1.SIG = z.SIG
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return z1
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}
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// Insert inserts r into z.
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func (z *Zone) Insert(r dns.RR) { z.Tree.Insert(r) }
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// Delete deletes r from z.
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func (z *Zone) Delete(r dns.RR) { z.Tree.Delete(r) }
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// TransferAllowed checks if incoming request for transferring the zone is allowed according to the ACLs.
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func (z *Zone) TransferAllowed(state middleware.State) bool {
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for _, t := range z.TransferTo {
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if t == "*" {
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return true
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}
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}
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// TODO(miek): future matching against IP/CIDR notations
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return false
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}
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// All returns all records from the zone, the first record will be the SOA record,
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// otionally followed by all RRSIG(SOA)s.
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func (z *Zone) All() []dns.RR {
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records := []dns.RR{}
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allNodes := z.Tree.All()
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for _, a := range allNodes {
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records = append(records, a.All()...)
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}
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if len(z.SIG) > 0 {
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records = append(z.SIG, records...)
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}
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return append([]dns.RR{z.SOA}, records...)
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}
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