feat: enhance logging for firewall setup and system info

src/internal/log/log.go

@@ -4,6 +4,7 @@ import (
 	"io"
 	"log/slog"
 	"os"
+	"runtime"
 	"strings"
 	"time"
 
@@ -57,6 +58,7 @@ func SetLogConf(level string) {
 
 func LogHeader(version string, cfg *config.Config) {
 	slog.Info("UA3F started", "version", version, "", cfg)
+	slog.Info("System Info", slog.String("Go Version", strings.TrimPrefix(strings.TrimSpace(runtime.Version()), "go")), slog.String("OS/Arch", runtime.GOOS+"/"+runtime.GOARCH))
 }
 
 func LogDebugWithAddr(src string, dest string, msg string) {

src/internal/netfilter/firewall.go

@@ -108,6 +108,7 @@ type Firewall struct {
 func (f *Firewall) Setup(cfg *config.Config) (err error) {
 	_ = f.Cleanup()
 	backend := detectFirewallBackend(cfg)
+	slog.Info("Setup firewall", slog.String("backend", backend))
 	switch backend {
 	case NFT:
 		if f.NftSetup == nil {
@@ -125,6 +126,8 @@ func (f *Firewall) Setup(cfg *config.Config) (err error) {
 	if err != nil {
 		_ = f.Cleanup()
 	}
+	f.DumpNFTables()
+	f.DumpIPTables()
 	return err
 }
 
@@ -144,7 +147,7 @@ func (f *Firewall) DumpNFTables() {
 	if err != nil {
 		return
 	}
-	slog.Debug(fmt.Sprintf("nftables ruleset:\n%s", string(output)))
+	slog.Info("nftables ruleset:\n" + string(output))
 }
 
 func (f *Firewall) DumpIPTables() {

src/internal/server/netlink/netlink_linux.go

@@ -45,8 +45,6 @@ func (s *Server) Start() (err error) {
 		slog.Error("Firewall.Setup", slog.Any("error", err))
 		return err
 	}
-	s.Firewall.DumpNFTables()
-	s.Firewall.DumpIPTables()
 	if s.cfg.SetTTL || s.cfg.DelTCPTimestamp || s.cfg.SetIPID {
 		slog.Info("Packet modification features enabled")
 		go s.nfqServer.Start()