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feat(everything): did a massive dnssec refactor to improve robustness

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This commit is contained in:
Afonso Franco
2026-07-10 18:59:49 +01:00
parent e821d6677d
commit 4ef9ea5a4a
23 changed files with 809 additions and 1398 deletions
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cmd/sdns-proxy/sdns-proxy.go
+3 -46
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@@ -7,16 +7,14 @@ import (
"github.com/afonsofrancof/sdns-proxy/client"
"github.com/afonsofrancof/sdns-proxy/common/logger"
"github.com/afonsofrancof/sdns-proxy/server"
"github.com/alecthomas/kong"
"github.com/miekg/dns"
)
var cli struct {
Debug bool `help:"Enable debug logging globally." short:"D" env:"DEBUG"`
Query QueryCmd `cmd:"" help:"Perform a DNS query (client mode)."`
Listen ListenCmd `cmd:"" help:"Run as a DNS listener/resolver (server mode)."`
Debug bool `help:"Enable debug logging globally." short:"D" env:"DEBUG"`
Query QueryCmd `cmd:"" help:"Perform a DNS query (client mode)."`
}
type QueryCmd struct {
@@ -32,18 +30,6 @@ type QueryCmd struct {
KeyLogFile string `help:"Path to TLS key log file (for DoT/DoH/DoQ)." env:"SSLKEYLOGFILE"`
}
type ListenCmd struct {
Address string `help:"Address to listen on (e.g., :53, :8053)." default:":53"`
Upstream string `help:"Upstream DNS server (e.g., https://1.1.1.1/dns-query, tls://8.8.8.8)." short:"u" required:""`
Fallback string `help:"Fallback DNS server (e.g., https://1.1.1.1/dns-query, tls://8.8.8.8)." short:"f"`
Bootstrap string `help:"Bootstrap DNS server (must be an IP address, e.g., 8.8.8.8, 1.1.1.1)." short:"b"`
DNSSEC bool `help:"Enable DNSSEC for upstream queries." short:"d"`
AuthoritativeDNSSEC bool `help:"Use authoritative DNSSEC validation instead of trusting resolver." short:"a"`
KeepAlive bool `help:"Use persistent connections to upstream servers." short:"k"`
Timeout time.Duration `help:"Timeout for upstream queries." default:"5s"`
Verbose bool `help:"Enable verbose logging." short:"v"`
}
func (q *QueryCmd) Run() error {
logger.Info("Querying %s for %s type %s (DNSSEC: %v, AuthoritativeDNSSEC: %v, ValidateOnly: %v, StrictValidation: %v, KeepAlive: %v, Timeout: %v)",
q.Server, q.DomainName, q.QueryType, q.DNSSEC, q.AuthoritativeDNSSEC, q.ValidateOnly, q.StrictValidation, q.KeepAlive, q.Timeout)
@@ -77,7 +63,7 @@ func (q *QueryCmd) Run() error {
msg.RecursionDesired = true
logger.Debug("Sending DNS query: ID=%d, Question=%s %s", msg.Id, q.DomainName, q.QueryType)
recvMsg, err := dnsClient.Query(msg)
_, recvMsg, err := dnsClient.Query(msg)
if err != nil {
logger.Error("DNS query failed: %v", err)
return err
@@ -89,35 +75,6 @@ func (q *QueryCmd) Run() error {
return nil
}
func (l *ListenCmd) Run() error {
config := server.Config{
Address: l.Address,
Upstream: l.Upstream,
Fallback: l.Fallback,
Bootstrap: l.Bootstrap,
DNSSEC: l.DNSSEC,
AuthoritativeDNSSEC: l.AuthoritativeDNSSEC,
KeepAlive: l.KeepAlive,
Timeout: l.Timeout,
Verbose: l.Verbose,
}
logger.Debug("Server config: %+v", config)
srv, err := server.New(config)
if err != nil {
logger.Error("Failed to create server: %v", err)
return fmt.Errorf("failed to create server: %w", err)
}
logger.Info("Starting DNS proxy server on %s", l.Address)
logger.Info("Upstream server: %v", l.Upstream)
logger.Info("Fallback server: %v", l.Fallback)
logger.Info("Bootstrap server: %v", l.Bootstrap)
logger.Info("KeepAlive: %v", l.KeepAlive)
return srv.Start()
}
func printResponse(domain, qtype string, msg *dns.Msg) {
fmt.Println(";; QUESTION SECTION:")