AdGuardHome/dnsforward/stats.go

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package dnsforward
import (
"net"
"strings"
"time"
"github.com/AdguardTeam/AdGuardHome/querylog"
"github.com/miekg/dns"
"github.com/AdguardTeam/AdGuardHome/dnsfilter"
"github.com/AdguardTeam/AdGuardHome/stats"
"github.com/AdguardTeam/dnsproxy/proxy"
)
// Write Stats data and logs
func processQueryLogsAndStats(ctx *dnsContext) int {
elapsed := time.Since(ctx.startTime)
s := ctx.srv
d := ctx.proxyCtx
shouldLog := true
msg := d.Req
// don't log ANY request if refuseAny is enabled
if len(msg.Question) >= 1 && msg.Question[0].Qtype == dns.TypeANY && s.conf.RefuseAny {
shouldLog = false
}
s.RLock()
// Synchronize access to s.queryLog and s.stats so they won't be suddenly uninitialized while in use.
// This can happen after proxy server has been stopped, but its workers haven't yet exited.
if shouldLog && s.queryLog != nil {
p := querylog.AddParams{
Question: msg,
Answer: d.Res,
OrigAnswer: ctx.origResp,
Result: ctx.result,
Elapsed: elapsed,
ClientIP: getIP(d.Addr),
}
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if d.Proto == "https" {
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p.ClientProto = "doh"
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} else if d.Proto == "tls" {
p.ClientProto = "dot"
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}
if d.Upstream != nil {
p.Upstream = d.Upstream.Address()
}
s.queryLog.Add(p)
}
s.updateStats(d, elapsed, *ctx.result)
s.RUnlock()
return resultDone
}
func (s *Server) updateStats(d *proxy.DNSContext, elapsed time.Duration, res dnsfilter.Result) {
if s.stats == nil {
return
}
e := stats.Entry{}
e.Domain = strings.ToLower(d.Req.Question[0].Name)
e.Domain = e.Domain[:len(e.Domain)-1] // remove last "."
switch addr := d.Addr.(type) {
case *net.UDPAddr:
e.Client = addr.IP
case *net.TCPAddr:
e.Client = addr.IP
}
e.Time = uint32(elapsed / 1000)
e.Result = stats.RNotFiltered
switch res.Reason {
case dnsfilter.FilteredSafeBrowsing:
e.Result = stats.RSafeBrowsing
case dnsfilter.FilteredParental:
e.Result = stats.RParental
case dnsfilter.FilteredSafeSearch:
e.Result = stats.RSafeSearch
case dnsfilter.FilteredBlackList:
fallthrough
case dnsfilter.FilteredInvalid:
fallthrough
case dnsfilter.FilteredBlockedService:
e.Result = stats.RFiltered
}
s.stats.Update(e)
}