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311af9314d
* plugin/dnssec: implement shotgun from CloudFlare Put a whole bunch of types in the NSEC bitmap and remove the one that's being asked for. Add more records for queries to the apex, SOA, DNSKEY, MX.
50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
package dnssec
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import (
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"log"
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"time"
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"github.com/coredns/coredns/plugin"
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"github.com/coredns/coredns/request"
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"github.com/miekg/dns"
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)
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// ResponseWriter sign the response on the fly.
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type ResponseWriter struct {
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dns.ResponseWriter
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d Dnssec
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}
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// WriteMsg implements the dns.ResponseWriter interface.
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func (d *ResponseWriter) WriteMsg(res *dns.Msg) error {
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// By definition we should sign anything that comes back, we should still figure out for
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// which zone it should be.
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state := request.Request{W: d.ResponseWriter, Req: res}
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zone := plugin.Zones(d.d.zones).Matches(state.Name())
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if zone == "" {
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return d.ResponseWriter.WriteMsg(res)
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}
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state.Zone = zone
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if state.Do() {
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res = d.d.Sign(state, time.Now().UTC())
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cacheSize.WithLabelValues("signature").Set(float64(d.d.cache.Len()))
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}
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state.SizeAndDo(res)
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return d.ResponseWriter.WriteMsg(res)
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}
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// Write implements the dns.ResponseWriter interface.
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func (d *ResponseWriter) Write(buf []byte) (int, error) {
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log.Printf("[WARNING] Dnssec called with Write: not signing reply")
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n, err := d.ResponseWriter.Write(buf)
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return n, err
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}
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// Hijack implements the dns.ResponseWriter interface.
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func (d *ResponseWriter) Hijack() { d.ResponseWriter.Hijack() }
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