mirror of
https://github.com/safing/portmaster
synced 2025-09-01 10:09:11 +00:00
36 lines
1.2 KiB
Go
36 lines
1.2 KiB
Go
package nameserver
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import (
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"github.com/miekg/dns"
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"github.com/safing/portbase/log"
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"github.com/safing/portmaster/nameserver/nsutil"
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"github.com/safing/portmaster/network"
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)
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// sendResponse sends a response to query using w. If reasonCtx is not
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// nil and implements either the Responder or RRProvider interface then
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// those functions are used to craft a DNS response. If reasonCtx is nil
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// or does not implement the Responder interface and verdict is not set
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// to failed a ZeroIP response will be sent. If verdict is set to failed
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// then a ServFail will be sent instead.
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func sendResponse(w dns.ResponseWriter, query *dns.Msg, verdict network.Verdict, reason string, reasonCtx interface{}) {
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responder, ok := reasonCtx.(nsutil.Responder)
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if !ok {
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if verdict == network.VerdictFailed {
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responder = nsutil.ServeFail()
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} else {
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responder = nsutil.ZeroIP()
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}
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}
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reply := responder.ReplyWithDNS(query, reason, reasonCtx)
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if extra, ok := reasonCtx.(nsutil.RRProvider); ok {
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rrs := extra.GetExtraRR(query, reason, reasonCtx)
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reply.Extra = append(reply.Extra, rrs...)
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}
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if err := w.WriteMsg(reply); err != nil {
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log.Errorf("nameserver: failed to send response: %s", err)
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}
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}
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