home: imp code

internal/home/controlinstall.go

@@ -433,7 +433,7 @@ func (web *webAPI) handleInstallConfigure(w http.ResponseWriter, r *http.Request
 	// moment we'll allow setting up TLS in the initial configuration or the
 	// configuration itself will use HTTPS protocol, because the underlying
 	// functions potentially restart the HTTPS server.
-	err = startMods()
+	err = startMods(web.logger)
 	if err != nil {
 		Context.firstRun = true
 		copyInstallSettings(config, curConfig)

internal/home/dns.go

@@ -2,6 +2,7 @@ package home
 
 import (
 	"fmt"
+	"log/slog"
 	"net"
 	"net/netip"
 	"net/url"
@@ -43,8 +44,8 @@ func onConfigModified() {
 
 // initDNS updates all the fields of the [Context] needed to initialize the DNS
 // server and initializes it at last.  It also must not be called unless
-// [config] and [Context] are initialized.
-func initDNS() (err error) {
+// [config] and [Context] are initialized.  l must not be nil.
+func initDNS(l *slog.Logger) (err error) {
 	anonymizer := config.anonymizer()
 
 	statsDir, querylogDir, err := checkStatsAndQuerylogDirs(&Context, config)
@@ -113,13 +114,14 @@ func initDNS() (err error) {
 		anonymizer,
 		httpRegister,
 		tlsConf,
+		l,
 	)
 }
 
 // initDNSServer initializes the [context.dnsServer].  To only use the internal
-// proxy, none of the arguments are required, but tlsConf still must not be nil,
-// in other cases all the arguments also must not be nil.  It also must not be
-// called unless [config] and [Context] are initialized.
+// proxy, none of the arguments are required, but tlsConf and l still must not
+// be nil, in other cases all the arguments also must not be nil.  It also must
+// not be called unless [config] and [Context] are initialized.
 func initDNSServer(
 	filters *filtering.DNSFilter,
 	sts stats.Interface,
@@ -128,9 +130,10 @@ func initDNSServer(
 	anonymizer *aghnet.IPMut,
 	httpReg aghhttp.RegisterFunc,
 	tlsConf *tlsConfigSettings,
+	l *slog.Logger,
 ) (err error) {
 	Context.dnsServer, err = dnsforward.NewServer(dnsforward.DNSCreateParams{
-		Logger:      Context.logger,
+		Logger:      l,
 		DNSFilter:   filters,
 		Stats:       sts,
 		QueryLog:    qlog,

internal/home/home.go

@@ -62,9 +62,6 @@ type homeContext struct {
 	// configuration files, for example /etc/hosts.
 	etcHosts *aghnet.HostsContainer
 
-	// logger is an instance of [*slog.Logger].  It is never nil.
-	logger *slog.Logger
-
 	// mux is our custom http.ServeMux.
 	mux *http.ServeMux
 
@@ -140,13 +137,12 @@ func Main(clientBuildFS fs.FS) {
 }
 
 // setupContext initializes [Context] fields.  It also reads and upgrades
-// config file if necessary.  l must not be nil.
-func setupContext(opts options, l *slog.Logger) (err error) {
+// config file if necessary.
+func setupContext(opts options) (err error) {
 	Context.firstRun = detectFirstRun()
 
 	Context.tlsRoots = aghtls.SystemRootCAs()
 	Context.mux = http.NewServeMux()
-	Context.logger = l
 
 	if Context.firstRun {
 		log.Info("This is the first time AdGuard Home is launched")
@@ -487,7 +483,12 @@ func checkPorts() (err error) {
 	return nil
 }
 
-func initWeb(opts options, clientBuildFS fs.FS, upd *updater.Updater) (web *webAPI, err error) {
+func initWeb(
+	opts options,
+	clientBuildFS fs.FS,
+	upd *updater.Updater,
+	l *slog.Logger,
+) (web *webAPI, err error) {
 	var clientFS fs.FS
 	if opts.localFrontend {
 		log.Info("warning: using local frontend files")
@@ -529,7 +530,7 @@ func initWeb(opts options, clientBuildFS fs.FS, upd *updater.Updater) (web *webA
 		serveHTTP3:       config.DNS.ServeHTTP3,
 	}
 
-	web = newWebAPI(webConf)
+	web = newWebAPI(webConf, l)
 	if web == nil {
 		return nil, fmt.Errorf("initializing web: %w", err)
 	}
@@ -568,7 +569,7 @@ func run(opts options, clientBuildFS fs.FS, done chan struct{}) {
 		log.Info("AdGuard Home is running as a service")
 	}
 
-	err = setupContext(opts, slogLogger)
+	err = setupContext(opts)
 	fatalOnError(err)
 
 	err = configureOS(config)
@@ -614,7 +615,7 @@ func run(opts options, clientBuildFS fs.FS, done chan struct{}) {
 
 	// TODO(e.burkov): This could be made earlier, probably as the option's
 	// effect.
-	cmdlineUpdate(opts, upd)
+	cmdlineUpdate(opts, upd, slogLogger)
 
 	if !Context.firstRun {
 		// Save the updated config.
@@ -642,11 +643,11 @@ func run(opts options, clientBuildFS fs.FS, done chan struct{}) {
 		onConfigModified()
 	}
 
-	Context.web, err = initWeb(opts, clientBuildFS, upd)
+	Context.web, err = initWeb(opts, clientBuildFS, upd, slogLogger)
 	fatalOnError(err)
 
 	if !Context.firstRun {
-		err = initDNS()
+		err = initDNS(slogLogger)
 		fatalOnError(err)
 
 		Context.tls.start()
@@ -707,9 +708,10 @@ func (c *configuration) anonymizer() (ipmut *aghnet.IPMut) {
 	return aghnet.NewIPMut(anonFunc)
 }
 
-// startMods initializes and starts the DNS server after installation.
-func startMods() (err error) {
-	err = initDNS()
+// startMods initializes and starts the DNS server after installation.  l must
+// not be nil.
+func startMods(l *slog.Logger) (err error) {
+	err = initDNS(l)
 	if err != nil {
 		return err
 	}
@@ -969,8 +971,8 @@ type jsonError struct {
 	Message string `json:"message"`
 }
 
-// cmdlineUpdate updates current application and exits.
-func cmdlineUpdate(opts options, upd *updater.Updater) {
+// cmdlineUpdate updates current application and exits.  l must not be nil.
+func cmdlineUpdate(opts options, upd *updater.Updater, l *slog.Logger) {
 	if !opts.performUpdate {
 		return
 	}
@@ -980,7 +982,7 @@ func cmdlineUpdate(opts options, upd *updater.Updater) {
 	//
 	// TODO(e.burkov):  We could probably initialize the internal resolver
 	// separately.
-	err := initDNSServer(nil, nil, nil, nil, nil, nil, &tlsConfigSettings{})
+	err := initDNSServer(nil, nil, nil, nil, nil, nil, &tlsConfigSettings{}, l)
 	fatalOnError(err)
 
 	log.Info("cmdline update: performing update")

internal/home/web.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"crypto/tls"
 	"io/fs"
+	"log/slog"
 	"net/http"
 	"net/netip"
 	"runtime"
@@ -90,17 +91,22 @@ type webAPI struct {
 	// TODO(a.garipov): Refactor all these servers.
 	httpServer *http.Server
 
+	// logger is a slog logger used in webAPI. It must not be nil.
+	logger *slog.Logger
+
 	// httpsServer is the server that handles HTTPS traffic.  If it is not nil,
 	// [Web.http3Server] must also not be nil.
 	httpsServer httpsServer
 }
 
-// newWebAPI creates a new instance of the web UI and API server.
-func newWebAPI(conf *webConfig) (w *webAPI) {
+// newWebAPI creates a new instance of the web UI and API server.  l must not be
+// nil.
+func newWebAPI(conf *webConfig, l *slog.Logger) (w *webAPI) {
 	log.Info("web: initializing")
 
 	w = &webAPI{
-		conf: conf,
+		conf:   conf,
+		logger: l,
 	}
 
 	clientFS := http.FileServer(http.FS(conf.clientFS))