Pull request: all: imp updater

Merge in DNS/adguard-home from imp-updater to master

Squashed commit of the following:

commit 6ed487359e56a35b36f13dcbf2efbf2a7a2d8734
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Jun 9 16:29:35 2022 +0300

    all: imp logs, err handling

commit e930044cb619a43e5a44c230dadbe2228e9a93f5
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Jun 9 15:53:35 2022 +0300

    all: imp updater

client/src/__locales/en.json

@@ -445,7 +445,7 @@
     "access_blocked_title": "Disallowed domains",
     "access_blocked_desc": "Not to be confused with filters. AdGuard Home drops DNS queries matching these domains, and these queries don't even appear in the query log. You can specify exact domain names, wildcards, or URL filter rules, e.g. \"example.org\", \"*.example.org\", or \"||example.org^\" correspondingly.",
     "access_settings_saved": "Access settings successfully saved",
-    "updates_checked": "Updates successfully checked",
+    "updates_checked": "A new version of AdGuard Home is available",
     "updates_version_equal": "AdGuard Home is up-to-date",
     "check_updates_now": "Check for updates now",
     "dns_privacy": "DNS Privacy",

internal/aghalg/nullbool.go

@@ -0,0 +1,59 @@
+package aghalg
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+)
+
+// NullBool is a nullable boolean.  Use these in JSON requests and responses
+// instead of pointers to bool.
+type NullBool uint8
+
+// NullBool values
+const (
+	NBNull NullBool = iota
+	NBTrue
+	NBFalse
+)
+
+// String implements the fmt.Stringer interface for NullBool.
+func (nb NullBool) String() (s string) {
+	switch nb {
+	case NBNull:
+		return "null"
+	case NBTrue:
+		return "true"
+	case NBFalse:
+		return "false"
+	}
+
+	return fmt.Sprintf("!invalid NullBool %d", uint8(nb))
+}
+
+// BoolToNullBool converts a bool into a NullBool.
+func BoolToNullBool(cond bool) (nb NullBool) {
+	if cond {
+		return NBTrue
+	}
+
+	return NBFalse
+}
+
+// type check
+var _ json.Unmarshaler = (*NullBool)(nil)
+
+// UnmarshalJSON implements the json.Unmarshaler interface for *NullBool.
+func (nb *NullBool) UnmarshalJSON(b []byte) (err error) {
+	if len(b) == 0 || bytes.Equal(b, []byte("null")) {
+		*nb = NBNull
+	} else if bytes.Equal(b, []byte("true")) {
+		*nb = NBTrue
+	} else if bytes.Equal(b, []byte("false")) {
+		*nb = NBFalse
+	} else {
+		return fmt.Errorf("unmarshalling json data into aghalg.NullBool: bad value %q", b)
+	}
+
+	return nil
+}

internal/aghalg/nullbool_test.go

@@ -1,9 +1,10 @@
-package dhcpd
+package aghalg_test
 
 import (
 	"encoding/json"
 	"testing"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
 	"github.com/AdguardTeam/golibs/testutil"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
@@ -14,37 +15,37 @@ func TestNullBool_UnmarshalJSON(t *testing.T) {
 		name       string
 		wantErrMsg string
 		data       []byte
-		want       nullBool
+		want       aghalg.NullBool
 	}{{
 		name:       "empty",
 		wantErrMsg: "",
 		data:       []byte{},
-		want:       nbNull,
+		want:       aghalg.NBNull,
 	}, {
 		name:       "null",
 		wantErrMsg: "",
 		data:       []byte("null"),
-		want:       nbNull,
+		want:       aghalg.NBNull,
 	}, {
 		name:       "true",
 		wantErrMsg: "",
 		data:       []byte("true"),
-		want:       nbTrue,
+		want:       aghalg.NBTrue,
 	}, {
 		name:       "false",
 		wantErrMsg: "",
 		data:       []byte("false"),
-		want:       nbFalse,
+		want:       aghalg.NBFalse,
 	}, {
 		name:       "invalid",
-		wantErrMsg: `invalid nullBool value "invalid"`,
+		wantErrMsg: `unmarshalling json data into aghalg.NullBool: bad value "invalid"`,
 		data:       []byte("invalid"),
-		want:       nbNull,
+		want:       aghalg.NBNull,
 	}}
 
 	for _, tc := range testCases {
 		t.Run(tc.name, func(t *testing.T) {
-			var got nullBool
+			var got aghalg.NullBool
 			err := got.UnmarshalJSON(tc.data)
 			testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
 
@@ -53,9 +54,9 @@ func TestNullBool_UnmarshalJSON(t *testing.T) {
 	}
 
 	t.Run("json", func(t *testing.T) {
-		want := nbTrue
+		want := aghalg.NBTrue
 		var got struct {
-			A nullBool
+			A aghalg.NullBool
 		}
 
 		err := json.Unmarshal([]byte(`{"A":true}`), &got)

internal/dhcpd/http.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghnet"
 	"github.com/AdguardTeam/golibs/errors"
@@ -145,7 +146,7 @@ type dhcpServerConfigJSON struct {
 	V4            *v4ServerConfJSON `json:"v4"`
 	V6            *v6ServerConfJSON `json:"v6"`
 	InterfaceName string            `json:"interface_name"`
-	Enabled       nullBool          `json:"enabled"`
+	Enabled       aghalg.NullBool   `json:"enabled"`
 }
 
 func (s *Server) handleDHCPSetConfigV4(
@@ -156,7 +157,7 @@ func (s *Server) handleDHCPSetConfigV4(
 	}
 
 	v4Conf := v4JSONToServerConf(conf.V4)
-	v4Conf.Enabled = conf.Enabled == nbTrue
+	v4Conf.Enabled = conf.Enabled == aghalg.NBTrue
 	if len(v4Conf.RangeStart) == 0 {
 		v4Conf.Enabled = false
 	}
@@ -183,7 +184,7 @@ func (s *Server) handleDHCPSetConfigV6(
 	}
 
 	v6Conf := v6JSONToServerConf(conf.V6)
-	v6Conf.Enabled = conf.Enabled == nbTrue
+	v6Conf.Enabled = conf.Enabled == aghalg.NBTrue
 	if len(v6Conf.RangeStart) == 0 {
 		v6Conf.Enabled = false
 	}
@@ -206,7 +207,7 @@ func (s *Server) handleDHCPSetConfigV6(
 
 func (s *Server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
 	conf := &dhcpServerConfigJSON{}
-	conf.Enabled = boolToNullBool(s.conf.Enabled)
+	conf.Enabled = aghalg.BoolToNullBool(s.conf.Enabled)
 	conf.InterfaceName = s.conf.InterfaceName
 
 	err := json.NewDecoder(r.Body).Decode(conf)
@@ -230,7 +231,7 @@ func (s *Server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if conf.Enabled == nbTrue && !v4Enabled && !v6Enabled {
+	if conf.Enabled == aghalg.NBTrue && !v4Enabled && !v6Enabled {
 		aghhttp.Error(r, w, http.StatusBadRequest, "dhcpv4 or dhcpv6 configuration must be complete")
 
 		return
@@ -243,8 +244,8 @@ func (s *Server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if conf.Enabled != nbNull {
+	if conf.Enabled != aghalg.NBNull {
-		s.conf.Enabled = conf.Enabled == nbTrue
+		s.conf.Enabled = conf.Enabled == aghalg.NBTrue
 	}
 
 	if conf.InterfaceName != "" {
@@ -279,11 +280,11 @@ func (s *Server) handleDHCPSetConfig(w http.ResponseWriter, r *http.Request) {
 
 type netInterfaceJSON struct {
 	Name         string   `json:"name"`
-	GatewayIP    net.IP   `json:"gateway_ip"`
 	HardwareAddr string   `json:"hardware_address"`
+	Flags        string   `json:"flags"`
+	GatewayIP    net.IP   `json:"gateway_ip"`
 	Addrs4       []net.IP `json:"ipv4_addresses"`
 	Addrs6       []net.IP `json:"ipv6_addresses"`
-	Flags        string   `json:"flags"`
 }
 
 func (s *Server) handleDHCPInterfaces(w http.ResponseWriter, r *http.Request) {

internal/dhcpd/nullbool.go

@@ -1,58 +0,0 @@
-package dhcpd
-
-import (
-	"bytes"
-	"fmt"
-)
-
-// nullBool is a nullable boolean.  Use these in JSON requests and responses
-// instead of pointers to bool.
-//
-// TODO(a.garipov): Inspect uses of *bool, move this type into some new package
-// if we need it somewhere else.
-type nullBool uint8
-
-// nullBool values
-const (
-	nbNull nullBool = iota
-	nbTrue
-	nbFalse
-)
-
-// String implements the fmt.Stringer interface for nullBool.
-func (nb nullBool) String() (s string) {
-	switch nb {
-	case nbNull:
-		return "null"
-	case nbTrue:
-		return "true"
-	case nbFalse:
-		return "false"
-	}
-
-	return fmt.Sprintf("!invalid nullBool %d", uint8(nb))
-}
-
-// boolToNullBool converts a bool into a nullBool.
-func boolToNullBool(cond bool) (nb nullBool) {
-	if cond {
-		return nbTrue
-	}
-
-	return nbFalse
-}
-
-// UnmarshalJSON implements the json.Unmarshaler interface for *nullBool.
-func (nb *nullBool) UnmarshalJSON(b []byte) (err error) {
-	if len(b) == 0 || bytes.Equal(b, []byte("null")) {
-		*nb = nbNull
-	} else if bytes.Equal(b, []byte("true")) {
-		*nb = nbTrue
-	} else if bytes.Equal(b, []byte("false")) {
-		*nb = nbFalse
-	} else {
-		return fmt.Errorf("invalid nullBool value %q", b)
-	}
-
-	return nil
-}

internal/home/controlupdate.go

@@ -12,6 +12,7 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghhttp"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghnet"
 	"github.com/AdguardTeam/AdGuardHome/internal/updater"
@@ -147,8 +148,8 @@ type versionResponse struct {
 // setAllowedToAutoUpdate sets CanAutoUpdate to true if AdGuard Home is actually
 // allowed to perform an automatic update by the OS.
 func (vr *versionResponse) setAllowedToAutoUpdate() (err error) {
-	if vr.CanAutoUpdate == nil || !*vr.CanAutoUpdate {
+	if vr.CanAutoUpdate != aghalg.NBTrue {
-		return
+		return nil
 	}
 
 	tlsConf := &tlsConfigSettings{}
@@ -162,7 +163,7 @@ func (vr *versionResponse) setAllowedToAutoUpdate() (err error) {
 		}
 	}
 
-	vr.CanAutoUpdate = &canUpdate
+	vr.CanAutoUpdate = aghalg.BoolToNullBool(canUpdate)
 
 	return nil
 }

internal/updater/check.go

@@ -5,9 +5,9 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"strings"
 	"time"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghio"
 	"github.com/AdguardTeam/golibs/errors"
 )
@@ -17,11 +17,12 @@ const versionCheckPeriod = 8 * time.Hour
 
 // VersionInfo contains information about a new version.
 type VersionInfo struct {
-	CanAutoUpdate        *bool  `json:"can_autoupdate,omitempty"`
 	NewVersion      string `json:"new_version,omitempty"`
 	Announcement    string `json:"announcement,omitempty"`
 	AnnouncementURL string `json:"announcement_url,omitempty"`
-	SelfUpdateMinVersion string `json:"-"`
+	// TODO(a.garipov): See if the frontend actually still cares about
+	// nullability.
+	CanAutoUpdate aghalg.NullBool `json:"can_autoupdate,omitempty"`
 }
 
 // MaxResponseSize is responses on server's requests maximum length in bytes.
@@ -67,15 +68,13 @@ func (u *Updater) VersionInfo(forceRecheck bool) (vi VersionInfo, err error) {
 }
 
 func (u *Updater) parseVersionResponse(data []byte) (VersionInfo, error) {
-	var canAutoUpdate bool
 	info := VersionInfo{
-		CanAutoUpdate: &canAutoUpdate,
+		CanAutoUpdate: aghalg.NBFalse,
 	}
 	versionJSON := map[string]string{
 		"version":          "",
 		"announcement":     "",
 		"announcement_url": "",
-		"selfupdate_min_version": "",
 	}
 	err := json.Unmarshal(data, &versionJSON)
 	if err != nil {
@@ -91,14 +90,9 @@ func (u *Updater) parseVersionResponse(data []byte) (VersionInfo, error) {
 	info.NewVersion = versionJSON["version"]
 	info.Announcement = versionJSON["announcement"]
 	info.AnnouncementURL = versionJSON["announcement_url"]
-	info.SelfUpdateMinVersion = versionJSON["selfupdate_min_version"]
 
 	packageURL, ok := u.downloadURL(versionJSON)
-	if ok &&
+	info.CanAutoUpdate = aghalg.BoolToNullBool(ok && info.NewVersion != u.version)
-		info.NewVersion != u.version &&
-		strings.TrimPrefix(u.version, "v") >= strings.TrimPrefix(info.SelfUpdateMinVersion, "v") {
-		canAutoUpdate = true
-	}
 
 	u.newVersion = info.NewVersion
 	u.packageURL = packageURL

internal/updater/updater.go

@@ -104,11 +104,14 @@ func NewUpdater(conf *Config) *Updater {
 }
 
 // Update performs the auto-update.
-func (u *Updater) Update() error {
+func (u *Updater) Update() (err error) {
 	u.mu.Lock()
 	defer u.mu.Unlock()
 
-	err := u.prepare()
+	log.Info("updater: updating")
+	defer func() { log.Info("updater: finished; errors: %v", err) }()
+
+	err = u.prepare()
 	if err != nil {
 		return err
 	}
@@ -178,7 +181,12 @@ func (u *Updater) prepare() (err error) {
 	u.backupExeName = filepath.Join(u.backupDir, exeName)
 	u.updateExeName = filepath.Join(u.updateDir, exeName)
 
-	log.Info("Updating from %s to %s.  URL:%s", version.Version(), u.newVersion, u.packageURL)
+	log.Debug(
+		"updater: updating from %s to %s using url: %s",
+		version.Version(),
+		u.newVersion,
+		u.packageURL,
+	)
 
 	// TODO(a.garipov): Use os.Args[0] instead?
 	u.currentExeName = filepath.Join(u.workDir, exeName)
@@ -194,7 +202,7 @@ func (u *Updater) unpack() error {
 	var err error
 	_, pkgNameOnly := filepath.Split(u.packageURL)
 
-	log.Debug("updater: unpacking the package")
+	log.Debug("updater: unpacking package")
 	if strings.HasSuffix(pkgNameOnly, ".zip") {
 		u.unpackedFiles, err = zipFileUnpack(u.packageName, u.updateDir)
 		if err != nil {
@@ -229,7 +237,7 @@ func (u *Updater) check() error {
 }
 
 func (u *Updater) backup() error {
-	log.Debug("updater: backing up the current configuration")
+	log.Debug("updater: backing up current configuration")
 	_ = os.Mkdir(u.backupDir, 0o755)
 	err := copyFile(u.confName, filepath.Join(u.backupDir, "AdGuardHome.yaml"))
 	if err != nil {
@@ -252,7 +260,7 @@ func (u *Updater) replace() error {
 		return fmt.Errorf("copySupportingFiles(%s, %s) failed: %s", u.updateDir, u.workDir, err)
 	}
 
-	log.Debug("updater: renaming: %s -> %s", u.currentExeName, u.backupExeName)
+	log.Debug("updater: renaming: %s to %s", u.currentExeName, u.backupExeName)
 	err = os.Rename(u.currentExeName, u.backupExeName)
 	if err != nil {
 		return err
@@ -268,7 +276,7 @@ func (u *Updater) replace() error {
 		return err
 	}
 
-	log.Debug("updater: renamed: %s -> %s", u.updateExeName, u.currentExeName)
+	log.Debug("updater: renamed: %s to %s", u.updateExeName, u.currentExeName)
 
 	return nil
 }
@@ -297,7 +305,7 @@ func (u *Updater) downloadPackageFile(url, filename string) (err error) {
 		return fmt.Errorf("http request failed: %w", err)
 	}
 
-	log.Debug("updater: reading HTTP body")
+	log.Debug("updater: reading http body")
 	// This use of ReadAll is now safe, because we limited body's Reader.
 	body, err := io.ReadAll(r)
 	if err != nil {
@@ -343,7 +351,7 @@ func tarGzFileUnpackOne(outDir string, tr *tar.Reader, hdr *tar.Header) (name st
 	}
 
 	if hdr.Typeflag != tar.TypeReg {
-		log.Debug("updater: %s: unknown file type %d, skipping", name, hdr.Typeflag)
+		log.Info("updater: %s: unknown file type %d, skipping", name, hdr.Typeflag)
 
 		return "", nil
 	}
@@ -364,7 +372,7 @@ func tarGzFileUnpackOne(outDir string, tr *tar.Reader, hdr *tar.Header) (name st
 		return "", fmt.Errorf("io.Copy(): %w", err)
 	}
 
-	log.Tracef("updater: created file %s", outputName)
+	log.Debug("updater: created file %q", outputName)
 
 	return name, nil
 }
@@ -440,7 +448,7 @@ func zipFileUnpackOne(outDir string, zf *zip.File) (name string, err error) {
 			return "", fmt.Errorf("os.Mkdir(%q): %w", outputName, err)
 		}
 
-		log.Tracef("created directory %q", outputName)
+		log.Debug("updater: created directory %q", outputName)
 
 		return "", nil
 	}
@@ -457,7 +465,7 @@ func zipFileUnpackOne(outDir string, zf *zip.File) (name string, err error) {
 		return "", fmt.Errorf("io.Copy(): %w", err)
 	}
 
-	log.Tracef("created file %s", outputName)
+	log.Debug("updater: created file %q", outputName)
 
 	return name, nil
 }
@@ -516,7 +524,7 @@ func copySupportingFiles(files []string, srcdir, dstdir string) error {
 			return err
 		}
 
-		log.Debug("updater: copied: %q -> %q", src, dst)
+		log.Debug("updater: copied: %q to %q", src, dst)
 	}
 
 	return nil

internal/updater/updater_test.go

@@ -10,6 +10,7 @@ import (
 	"strconv"
 	"testing"
 
+	"github.com/AdguardTeam/AdGuardHome/internal/aghalg"
 	"github.com/AdguardTeam/AdGuardHome/internal/aghtest"
 	"github.com/AdguardTeam/AdGuardHome/internal/version"
 	"github.com/AdguardTeam/golibs/testutil"
@@ -92,10 +93,7 @@ func TestUpdateGetVersion(t *testing.T) {
 	assert.Equal(t, "v0.103.0-beta.2", info.NewVersion)
 	assert.Equal(t, "AdGuard Home v0.103.0-beta.2 is now available!", info.Announcement)
 	assert.Equal(t, "https://github.com/AdguardTeam/AdGuardHome/internal/releases", info.AnnouncementURL)
-	assert.Equal(t, "v0.0", info.SelfUpdateMinVersion)
+	assert.Equal(t, aghalg.NBTrue, info.CanAutoUpdate)
-	if assert.NotNil(t, info.CanAutoUpdate) {
-		assert.True(t, *info.CanAutoUpdate)
-	}
 
 	// check cached
 	_, err = u.VersionInfo(false)
@@ -290,10 +288,7 @@ func TestUpdater_VersionInto_ARM(t *testing.T) {
 	assert.Equal(t, "v0.103.0-beta.2", info.NewVersion)
 	assert.Equal(t, "AdGuard Home v0.103.0-beta.2 is now available!", info.Announcement)
 	assert.Equal(t, "https://github.com/AdguardTeam/AdGuardHome/internal/releases", info.AnnouncementURL)
-	assert.Equal(t, "v0.0", info.SelfUpdateMinVersion)
+	assert.Equal(t, aghalg.NBTrue, info.CanAutoUpdate)
-	if assert.NotNil(t, info.CanAutoUpdate) {
-		assert.True(t, *info.CanAutoUpdate)
-	}
 }
 
 func TestUpdater_VersionInto_MIPS(t *testing.T) {
@@ -330,8 +325,5 @@ func TestUpdater_VersionInto_MIPS(t *testing.T) {
 	assert.Equal(t, "v0.103.0-beta.2", info.NewVersion)
 	assert.Equal(t, "AdGuard Home v0.103.0-beta.2 is now available!", info.Announcement)
 	assert.Equal(t, "https://github.com/AdguardTeam/AdGuardHome/internal/releases", info.AnnouncementURL)
-	assert.Equal(t, "v0.0", info.SelfUpdateMinVersion)
+	assert.Equal(t, aghalg.NBTrue, info.CanAutoUpdate)
-	if assert.NotNil(t, info.CanAutoUpdate) {
-		assert.True(t, *info.CanAutoUpdate)
-	}
 }

scripts/make/build-release.sh

@@ -363,6 +363,7 @@ else
 fi
 readonly announcement_url
 
+# TODO(a.garipov): Remove "selfupdate_min_version" in future versions.
 rm -f "$version_json"
 echo "{
   \"version\": \"${version}\",