miracle091/dnscrypt-proxy
miracle091/dnscrypt-proxy
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ODoH broke DNSCrypt relays with wildcards - repair

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This commit is contained in:
Frank Denis 2021-06-07 11:06:41 +02:00
parent cd45f64c18
commit 402860e2a6
1 changed files with 15 additions and 2 deletions
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17
dnscrypt-proxy/serversInfo.go
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@ -303,10 +303,20 @@ func findFarthestRoute(proxy *Proxy, name string, relayStamps []stamps.ServerSta
proxy.serversInfo.RUnlock()
// Fall back to random relays until the logic is implementeed for non-DNSCrypt relays
if server.stamp.Proto != stamps.StampProtoTypeDNSCrypt {
return &relayStamps[rand.Intn(len(relayStamps))]
if server.stamp.Proto == stamps.StampProtoTypeODoHTarget {
candidates := make([]int, 0)
for relayIdx, relayStamp := range relayStamps {
if relayStamp.Proto != stamps.StampProtoTypeODoHRelay {
continue
}
candidates = append(candidates, relayIdx)
}
return &relayStamps[candidates[rand.Intn(len(candidates))]]
} else if server.stamp.Proto != stamps.StampProtoTypeDNSCrypt {
return nil
}
// Anonyimized DNSCrypt relays
serverAddrStr, _ := ExtractHostAndPort(server.stamp.ServerAddrStr, 443)
serverAddr := net.ParseIP(serverAddrStr)
if serverAddr == nil {
@ -318,6 +328,9 @@ func findFarthestRoute(proxy *Proxy, name string, relayStamps []stamps.ServerSta
bestRelayIdxs := make([]int, 0)
bestRelaySamePrefixBits := 128
for relayIdx, relayStamp := range relayStamps {
if relayStamp.Proto != stamps.StampProtoTypeDNSCryptRelay {
continue
}
relayAddrStr, _ := ExtractHostAndPort(relayStamp.ServerAddrStr, 443)
relayAddr := net.ParseIP(relayAddrStr)
if relayAddr == nil {