Merge branch 'main' into v2

* main:
  feat(config): add option for audit file (fixes #9481) (#10066)
  chore(api): log X-Forwarded-For (#10035)
  chore(gui): update dependency copyrights, add script for periodic maintenance (#10067)
  chore(gui, man, authors): update docs, translations, and contributors
  chore(syncthing): remove support for TLS 1.2 sync connections (#10064)
  fix(osutil): give threads same I/O priority on Linux (#10063)
  chore(stun): switch lookup warning to debug level
  chore(gui, man, authors): update docs, translations, and contributors

.github/workflows/build-infra-dockers.yaml

@@ -21,7 +21,7 @@ jobs:
     name: Build and push Docker images
     if: github.repository == 'syncthing/syncthing'
     runs-on: ubuntu-latest
-    environment: release
+    environment: docker
     strategy:
       matrix:
         pkg:

AUTHORS

@@ -277,6 +277,7 @@ Oyebanji Jacob Mayowa <oyebanji05@gmail.com>
 Pablo <pbaeyens31+github@gmail.com>
 Pascal Jungblut (pascalj) <github@pascalj.com> <mail@pascal-jungblut.com>
 Paul Brit <paulbrit44@gmail.com>
+Paul Donald <newtwen+github@gmail.com>
 Pawel Palenica (qepasa) <pawelpalenica11@gmail.com>
 Paweł Rozlach <vespian@users.noreply.github.com>
 perewa <cavalcante.ten@gmail.com>
@@ -327,6 +328,7 @@ Syncthing Release Automation <release@syncthing.net>
 Sébastien WENSKE <sebastien@wenske.fr>
 Taylor Khan (nelsonkhan) <nelsonkhan@gmail.com>
 Terrance <git@terrance.allofti.me>
+TheCreeper <TheCreeper@users.noreply.github.com>
 Thomas <9749173+uhthomas@users.noreply.github.com>
 Thomas Hipp <thomashipp@gmail.com>
 Tim Abell (timabell) <tim@timwise.co.uk>

build.sh

@@ -23,6 +23,7 @@ case "${1:-default}" in
 
 	prerelease)
 		script authors
+		script copyrights
 		build weblate
 		pushd man ; ./refresh.sh ; popd
 		git add -A gui man AUTHORS

cmd/infra/strelaypoolsrv/main.go

@@ -29,6 +29,7 @@ import (
 	_ "github.com/syncthing/syncthing/lib/automaxprocs"
 	"github.com/syncthing/syncthing/lib/geoip"
 	"github.com/syncthing/syncthing/lib/protocol"
+	"github.com/syncthing/syncthing/lib/rand"
 	"github.com/syncthing/syncthing/lib/relay/client"
 	"github.com/syncthing/syncthing/lib/sync"
 	"github.com/syncthing/syncthing/lib/tlsutil"
@@ -110,6 +111,7 @@ var (
 	requestProcessors = 8
 	geoipLicenseKey   = os.Getenv("GEOIP_LICENSE_KEY")
 	geoipAccountID, _ = strconv.Atoi(os.Getenv("GEOIP_ACCOUNT_ID"))
+	maxRelaysReturned = 100
 
 	requests chan request
 
@@ -141,6 +143,7 @@ func main() {
 	flag.IntVar(&requestQueueLen, "request-queue", requestQueueLen, "Queue length for incoming test requests")
 	flag.IntVar(&requestProcessors, "request-processors", requestProcessors, "Number of request processor routines")
 	flag.StringVar(&geoipLicenseKey, "geoip-license-key", geoipLicenseKey, "License key for GeoIP database")
+	flag.IntVar(&maxRelaysReturned, "max-relays-returned", maxRelaysReturned, "Maximum number of relays returned for a normal endpoint query")
 
 	flag.Parse()
 
@@ -331,6 +334,10 @@ func handleEndpointShort(rw http.ResponseWriter, r *http.Request) {
 		relays = append(relays, relayShort{URL: slimURL(r.URL)})
 	}
 	mut.RUnlock()
+	if len(relays) > maxRelaysReturned {
+		rand.Shuffle(relays)
+		relays = relays[:maxRelaysReturned]
+	}
 
 	_ = json.NewEncoder(rw).Encode(map[string][]relayShort{
 		"relays": relays,

cmd/infra/stupgrades/main.go

@@ -258,9 +258,10 @@ func filterForCompabitility(rels []upgrade.Release, ua, osv string) []upgrade.Re
 }
 
 type cachedReleases struct {
-	url     string
-	mut     sync.RWMutex
-	current []upgrade.Release
+	url                  string
+	mut                  sync.RWMutex
+	current              []upgrade.Release
+	latestRel, latestPre string
 }
 
 func (c *cachedReleases) Releases() []upgrade.Release {
@@ -274,8 +275,26 @@ func (c *cachedReleases) Update(ctx context.Context) error {
 	if err != nil {
 		return err
 	}
+	latestRel, latestPre := "", ""
+	for _, rel := range rels {
+		if !rel.Prerelease && latestRel == "" {
+			latestRel = rel.Tag
+		}
+		if rel.Prerelease && latestPre == "" {
+			latestPre = rel.Tag
+		}
+		if latestRel != "" && latestPre != "" {
+			break
+		}
+	}
 	c.mut.Lock()
 	c.current = rels
+	if latestRel != c.latestRel || latestPre != c.latestPre {
+		metricLatestReleaseInfo.DeleteLabelValues(c.latestRel, c.latestPre)
+		metricLatestReleaseInfo.WithLabelValues(latestRel, latestPre).Set(1)
+		c.latestRel = latestRel
+		c.latestPre = latestPre
+	}
 	c.mut.Unlock()
 	return nil
 }

cmd/infra/stupgrades/metrics.go

@@ -27,4 +27,10 @@ var (
 		Subsystem: "upgrade",
 		Name:      "http_requests",
 	}, []string{"target", "result"})
+	metricLatestReleaseInfo = promauto.NewGaugeVec(prometheus.GaugeOpts{
+		Namespace: "syncthing",
+		Subsystem: "upgrade",
+		Name:      "latest_release_info",
+		Help:      "Release information",
+	}, []string{"latest_release", "latest_pre"})
 )

cmd/infra/ursrv/serve/serve.go

@@ -26,9 +26,11 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/puzpuzpuz/xsync/v3"
+	"github.com/syncthing/syncthing/internal/blob"
+	"github.com/syncthing/syncthing/internal/blob/azureblob"
+	"github.com/syncthing/syncthing/internal/blob/s3"
 	"github.com/syncthing/syncthing/lib/build"
 	"github.com/syncthing/syncthing/lib/geoip"
-	"github.com/syncthing/syncthing/lib/s3"
 	"github.com/syncthing/syncthing/lib/ur/contract"
 )
 
@@ -40,11 +42,15 @@ type CLI struct {
 	DumpFile        string        `env:"UR_DUMP_FILE" default:"reports.jsons.gz"`
 	DumpInterval    time.Duration `env:"UR_DUMP_INTERVAL" default:"5m"`
 
-	S3Endpoint    string `name:"s3-endpoint" hidden:"true" env:"UR_S3_ENDPOINT"`
-	S3Region      string `name:"s3-region" hidden:"true" env:"UR_S3_REGION"`
-	S3Bucket      string `name:"s3-bucket" hidden:"true" env:"UR_S3_BUCKET"`
-	S3AccessKeyID string `name:"s3-access-key-id" hidden:"true" env:"UR_S3_ACCESS_KEY_ID"`
-	S3SecretKey   string `name:"s3-secret-key" hidden:"true" env:"UR_S3_SECRET_KEY"`
+	S3Endpoint    string `name:"s3-endpoint" env:"UR_S3_ENDPOINT"`
+	S3Region      string `name:"s3-region" env:"UR_S3_REGION"`
+	S3Bucket      string `name:"s3-bucket" env:"UR_S3_BUCKET"`
+	S3AccessKeyID string `name:"s3-access-key-id" env:"UR_S3_ACCESS_KEY_ID"`
+	S3SecretKey   string `name:"s3-secret-key" env:"UR_S3_SECRET_KEY"`
+
+	AzureBlobAccount   string `name:"azure-blob-account" env:"UR_AZUREBLOB_ACCOUNT"`
+	AzureBlobKey       string `name:"azure-blob-key" env:"UR_AZUREBLOB_KEY"`
+	AzureBlobContainer string `name:"azure-blob-container" env:"UR_AZUREBLOB_CONTAINER"`
 }
 
 var (
@@ -77,6 +83,7 @@ var (
 		{regexp.MustCompile(`\ssyncthing@archlinux`), "Arch (3rd party)"},
 		{regexp.MustCompile(`@debian`), "Debian (3rd party)"},
 		{regexp.MustCompile(`@fedora`), "Fedora (3rd party)"},
+		{regexp.MustCompile(`@openSUSE`), "openSUSE (3rd party)"},
 		{regexp.MustCompile(`\sbrew@`), "Homebrew (3rd party)"},
 		{regexp.MustCompile(`\sroot@buildkitsandbox`), "LinuxServer.io (3rd party)"},
 		{regexp.MustCompile(`\sports@freebsd`), "FreeBSD (3rd party)"},
@@ -119,19 +126,25 @@ func (cli *CLI) Run() error {
 		go geo.Serve(context.TODO())
 	}
 
-	// s3
+	// Blob storage
 
-	var s3sess *s3.Session
+	var blobs blob.Store
 	if cli.S3Endpoint != "" {
-		s3sess, err = s3.NewSession(cli.S3Endpoint, cli.S3Region, cli.S3Bucket, cli.S3AccessKeyID, cli.S3SecretKey)
+		blobs, err = s3.NewSession(cli.S3Endpoint, cli.S3Region, cli.S3Bucket, cli.S3AccessKeyID, cli.S3SecretKey)
 		if err != nil {
 			slog.Error("Failed to create S3 session", "error", err)
 			return err
 		}
+	} else if cli.AzureBlobAccount != "" {
+		blobs, err = azureblob.NewBlobStore(cli.AzureBlobAccount, cli.AzureBlobKey, cli.AzureBlobContainer)
+		if err != nil {
+			slog.Error("Failed to create Azure blob store", "error", err)
+			return err
+		}
 	}
 
-	if _, err := os.Stat(cli.DumpFile); err != nil && s3sess != nil {
-		if err := cli.downloadDumpFile(s3sess); err != nil {
+	if _, err := os.Stat(cli.DumpFile); err != nil && blobs != nil {
+		if err := cli.downloadDumpFile(blobs); err != nil {
 			slog.Error("Failed to download dump file", "error", err)
 		}
 	}
@@ -153,7 +166,7 @@ func (cli *CLI) Run() error {
 
 	go func() {
 		for range time.Tick(cli.DumpInterval) {
-			if err := cli.saveDumpFile(srv, s3sess); err != nil {
+			if err := cli.saveDumpFile(srv, blobs); err != nil {
 				slog.Error("Failed to write dump file", "error", err)
 			}
 		}
@@ -192,8 +205,8 @@ func (cli *CLI) Run() error {
 	return metricsSrv.Serve(urListener)
 }
 
-func (cli *CLI) downloadDumpFile(s3sess *s3.Session) error {
-	latestKey, err := s3sess.LatestKey()
+func (cli *CLI) downloadDumpFile(blobs blob.Store) error {
+	latestKey, err := blobs.LatestKey(context.Background())
 	if err != nil {
 		return fmt.Errorf("list latest S3 key: %w", err)
 	}
@@ -201,7 +214,7 @@ func (cli *CLI) downloadDumpFile(s3sess *s3.Session) error {
 	if err != nil {
 		return fmt.Errorf("create dump file: %w", err)
 	}
-	if err := s3sess.Download(fd, latestKey); err != nil {
+	if err := blobs.Download(context.Background(), latestKey, fd); err != nil {
 		_ = fd.Close()
 		return fmt.Errorf("download dump file: %w", err)
 	}
@@ -212,7 +225,7 @@ func (cli *CLI) downloadDumpFile(s3sess *s3.Session) error {
 	return nil
 }
 
-func (cli *CLI) saveDumpFile(srv *server, s3sess *s3.Session) error {
+func (cli *CLI) saveDumpFile(srv *server, blobs blob.Store) error {
 	fd, err := os.Create(cli.DumpFile + ".tmp")
 	if err != nil {
 		return fmt.Errorf("creating dump file: %w", err)
@@ -233,13 +246,13 @@ func (cli *CLI) saveDumpFile(srv *server, s3sess *s3.Session) error {
 	}
 	slog.Info("Dump file saved")
 
-	if s3sess != nil {
+	if blobs != nil {
 		key := fmt.Sprintf("reports-%s.jsons.gz", time.Now().UTC().Format("2006-01-02"))
 		fd, err := os.Open(cli.DumpFile)
 		if err != nil {
 			return fmt.Errorf("opening dump file: %w", err)
 		}
-		if err := s3sess.Upload(fd, key); err != nil {
+		if err := blobs.Upload(context.Background(), key, fd); err != nil {
 			return fmt.Errorf("uploading dump file: %w", err)
 		}
 		_ = fd.Close()
@@ -351,6 +364,9 @@ func (s *server) addReport(rep *contract.Report) bool {
 			break
 		}
 	}
+	rep.DistDist = rep.Distribution
+	rep.DistOS = rep.OS
+	rep.DistArch = rep.Arch
 
 	_, loaded := s.reports.LoadAndStore(rep.UniqueID, rep)
 	return loaded

cmd/stdiscosrv/apisrv.go

@@ -66,7 +66,7 @@ type contextKey int
 
 const idKey contextKey = iota
 
-func newAPISrv(addr string, cert tls.Certificate, db database, repl replicator, useHTTP, compression bool) *apiSrv {
+func newAPISrv(addr string, cert tls.Certificate, db database, repl replicator, useHTTP, compression bool, desiredNotFoundRate float64) *apiSrv {
 	return &apiSrv{
 		addr:        addr,
 		cert:        cert,
@@ -77,13 +77,13 @@ func newAPISrv(addr string, cert tls.Certificate, db database, repl replicator,
 		seenTracker: &retryAfterTracker{
 			name:         "seenTracker",
 			bucketStarts: time.Now(),
-			desiredRate:  250,
+			desiredRate:  desiredNotFoundRate / 2,
 			currentDelay: notFoundRetryUnknownMinSeconds,
 		},
 		notSeenTracker: &retryAfterTracker{
 			name:         "notSeenTracker",
 			bucketStarts: time.Now(),
-			desiredRate:  250,
+			desiredRate:  desiredNotFoundRate / 2,
 			currentDelay: notFoundRetryUnknownMaxSeconds / 2,
 		},
 	}

cmd/stdiscosrv/apisrv_test.go

@@ -111,7 +111,7 @@ func BenchmarkAPIRequests(b *testing.B) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 	go db.Serve(ctx)
-	api := newAPISrv("127.0.0.1:0", tls.Certificate{}, db, nil, true, true)
+	api := newAPISrv("127.0.0.1:0", tls.Certificate{}, db, nil, true, true, 1000)
 	srv := httptest.NewServer(http.HandlerFunc(api.handler))
 
 	kf := b.TempDir() + "/cert"

cmd/stdiscosrv/database.go

@@ -24,11 +24,11 @@ import (
 	"github.com/puzpuzpuz/xsync/v3"
 	"google.golang.org/protobuf/proto"
 
+	"github.com/syncthing/syncthing/internal/blob"
 	"github.com/syncthing/syncthing/internal/gen/discosrv"
 	"github.com/syncthing/syncthing/internal/protoutil"
 	"github.com/syncthing/syncthing/lib/protocol"
 	"github.com/syncthing/syncthing/lib/rand"
-	"github.com/syncthing/syncthing/lib/s3"
 )
 
 type clock interface {
@@ -51,12 +51,12 @@ type inMemoryStore struct {
 	m             *xsync.MapOf[protocol.DeviceID, *discosrv.DatabaseRecord]
 	dir           string
 	flushInterval time.Duration
-	s3            *s3.Session
+	blobs         blob.Store
 	objKey        string
 	clock         clock
 }
 
-func newInMemoryStore(dir string, flushInterval time.Duration, s3sess *s3.Session) *inMemoryStore {
+func newInMemoryStore(dir string, flushInterval time.Duration, blobs blob.Store) *inMemoryStore {
 	hn, err := os.Hostname()
 	if err != nil {
 		hn = rand.String(8)
@@ -65,25 +65,25 @@ func newInMemoryStore(dir string, flushInterval time.Duration, s3sess *s3.Sessio
 		m:             xsync.NewMapOf[protocol.DeviceID, *discosrv.DatabaseRecord](),
 		dir:           dir,
 		flushInterval: flushInterval,
-		s3:            s3sess,
+		blobs:         blobs,
 		objKey:        hn + ".db",
 		clock:         defaultClock{},
 	}
 	nr, err := s.read()
-	if os.IsNotExist(err) && s3sess != nil {
-		// Try to read from AWS
-		latestKey, cerr := s3sess.LatestKey()
+	if os.IsNotExist(err) && blobs != nil {
+		// Try to read from blob storage
+		latestKey, cerr := blobs.LatestKey(context.Background())
 		if cerr != nil {
-			log.Println("Error reading database from S3:", err)
+			log.Println("Error finding database from blob storage:", cerr)
 			return s
 		}
 		fd, cerr := os.Create(path.Join(s.dir, "records.db"))
 		if cerr != nil {
-			log.Println("Error creating database file:", err)
+			log.Println("Error creating database file:", cerr)
 			return s
 		}
-		if cerr := s3sess.Download(fd, latestKey); cerr != nil {
-			log.Printf("Error reading database from S3: %v", err)
+		if cerr := blobs.Download(context.Background(), latestKey, fd); cerr != nil {
+			log.Printf("Error downloading database from blob storage: %v", cerr)
 		}
 		_ = fd.Close()
 		nr, err = s.read()
@@ -310,16 +310,16 @@ func (s *inMemoryStore) write() (err error) {
 		return err
 	}
 
-	// Upload to S3
-	if s.s3 != nil {
+	// Upload to blob storage
+	if s.blobs != nil {
 		fd, err = os.Open(dbf)
 		if err != nil {
-			log.Printf("Error uploading database to S3: %v", err)
+			log.Printf("Error uploading database to blob storage: %v", err)
 			return nil
 		}
 		defer fd.Close()
-		if err := s.s3.Upload(fd, s.objKey); err != nil {
-			log.Printf("Error uploading database to S3: %v", err)
+		if err := s.blobs.Upload(context.Background(), s.objKey, fd); err != nil {
+			log.Printf("Error uploading database to blob storage: %v", err)
 		}
 		log.Println("Finished uploading database")
 	}

cmd/stdiscosrv/main.go

@@ -21,11 +21,13 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/thejerf/suture/v4"
 
+	"github.com/syncthing/syncthing/internal/blob"
+	"github.com/syncthing/syncthing/internal/blob/azureblob"
+	"github.com/syncthing/syncthing/internal/blob/s3"
 	_ "github.com/syncthing/syncthing/lib/automaxprocs"
 	"github.com/syncthing/syncthing/lib/build"
 	"github.com/syncthing/syncthing/lib/protocol"
 	"github.com/syncthing/syncthing/lib/rand"
-	"github.com/syncthing/syncthing/lib/s3"
 	"github.com/syncthing/syncthing/lib/tlsutil"
 )
 
@@ -58,12 +60,13 @@ const (
 var debug = false
 
 type CLI struct {
-	Cert          string `group:"Listen" help:"Certificate file" default:"./cert.pem" env:"DISCOVERY_CERT_FILE"`
-	Key           string `group:"Listen" help:"Key file" default:"./key.pem" env:"DISCOVERY_KEY_FILE"`
-	HTTP          bool   `group:"Listen" help:"Listen on HTTP (behind an HTTPS proxy)" env:"DISCOVERY_HTTP"`
-	Compression   bool   `group:"Listen" help:"Enable GZIP compression of responses" env:"DISCOVERY_COMPRESSION"`
-	Listen        string `group:"Listen" help:"Listen address" default:":8443" env:"DISCOVERY_LISTEN"`
-	MetricsListen string `group:"Listen" help:"Metrics listen address" env:"DISCOVERY_METRICS_LISTEN"`
+	Cert                string  `group:"Listen" help:"Certificate file" default:"./cert.pem" env:"DISCOVERY_CERT_FILE"`
+	Key                 string  `group:"Listen" help:"Key file" default:"./key.pem" env:"DISCOVERY_KEY_FILE"`
+	HTTP                bool    `group:"Listen" help:"Listen on HTTP (behind an HTTPS proxy)" env:"DISCOVERY_HTTP"`
+	Compression         bool    `group:"Listen" help:"Enable GZIP compression of responses" env:"DISCOVERY_COMPRESSION"`
+	Listen              string  `group:"Listen" help:"Listen address" default:":8443" env:"DISCOVERY_LISTEN"`
+	MetricsListen       string  `group:"Listen" help:"Metrics listen address" env:"DISCOVERY_METRICS_LISTEN"`
+	DesiredNotFoundRate float64 `group:"Listen" help:"Desired maximum rate of not-found replies (/s)" default:"1000"`
 
 	DBDir           string        `group:"Database" help:"Database directory" default:"." env:"DISCOVERY_DB_DIR"`
 	DBFlushInterval time.Duration `group:"Database" help:"Interval between database flushes" default:"5m" env:"DISCOVERY_DB_FLUSH_INTERVAL"`
@@ -74,6 +77,10 @@ type CLI struct {
 	DBS3AccessKeyID string `name:"db-s3-access-key-id" group:"Database (S3 backup)" hidden:"true" help:"S3 access key ID for database" env:"DISCOVERY_DB_S3_ACCESS_KEY_ID"`
 	DBS3SecretKey   string `name:"db-s3-secret-key" group:"Database (S3 backup)" hidden:"true" help:"S3 secret key for database" env:"DISCOVERY_DB_S3_SECRET_KEY"`
 
+	DBAzureBlobAccount   string `name:"db-azure-blob-account" env:"DISCOVERY_DB_AZUREBLOB_ACCOUNT"`
+	DBAzureBlobKey       string `name:"db-azure-blob-key" env:"DISCOVERY_DB_AZUREBLOB_KEY"`
+	DBAzureBlobContainer string `name:"db-azure-blob-container" env:"DISCOVERY_DB_AZUREBLOB_CONTAINER"`
+
 	AMQPAddress string `group:"AMQP replication" hidden:"true" help:"Address to AMQP broker" env:"DISCOVERY_AMQP_ADDRESS"`
 
 	Debug   bool `short:"d" help:"Print debug output" env:"DISCOVERY_DEBUG"`
@@ -117,18 +124,20 @@ func main() {
 		Timeout:           2 * time.Minute,
 	})
 
-	// If configured, use S3 for database backups.
-	var s3c *s3.Session
+	// If configured, use blob storage for database backups.
+	var blobs blob.Store
+	var err error
 	if cli.DBS3Endpoint != "" {
-		var err error
-		s3c, err = s3.NewSession(cli.DBS3Endpoint, cli.DBS3Region, cli.DBS3Bucket, cli.DBS3AccessKeyID, cli.DBS3SecretKey)
-		if err != nil {
-			log.Fatalf("Failed to create S3 session: %v", err)
-		}
+		blobs, err = s3.NewSession(cli.DBS3Endpoint, cli.DBS3Region, cli.DBS3Bucket, cli.DBS3AccessKeyID, cli.DBS3SecretKey)
+	} else if cli.DBAzureBlobAccount != "" {
+		blobs, err = azureblob.NewBlobStore(cli.DBAzureBlobAccount, cli.DBAzureBlobKey, cli.DBAzureBlobContainer)
+	}
+	if err != nil {
+		log.Fatalf("Failed to create blob store: %v", err)
 	}
 
 	// Start the database.
-	db := newInMemoryStore(cli.DBDir, cli.DBFlushInterval, s3c)
+	db := newInMemoryStore(cli.DBDir, cli.DBFlushInterval, blobs)
 	main.Add(db)
 
 	// If we have an AMQP broker for replication, start that
@@ -141,7 +150,7 @@ func main() {
 	}
 
 	// Start the main API server.
-	qs := newAPISrv(cli.Listen, cert, db, repl, cli.HTTP, cli.Compression)
+	qs := newAPISrv(cli.Listen, cert, db, repl, cli.HTTP, cli.Compression, cli.DesiredNotFoundRate)
 	main.Add(qs)
 
 	// If we have a metrics port configured, start a metrics handler.

cmd/syncthing/generate/generate.go

@@ -24,10 +24,9 @@ import (
 )
 
 type CLI struct {
-	GUIUser         string `placeholder:"STRING" help:"Specify new GUI authentication user name"`
-	GUIPassword     string `placeholder:"STRING" help:"Specify new GUI authentication password (use - to read from standard input)"`
-	NoDefaultFolder bool   `help:"Don't create the \"default\" folder on first startup" env:"STNODEFAULTFOLDER"`
-	NoPortProbing   bool   `help:"Don't try to find free ports for GUI and listen addresses on first startup" env:"STNOPORTPROBING"`
+	GUIUser       string `placeholder:"STRING" help:"Specify new GUI authentication user name"`
+	GUIPassword   string `placeholder:"STRING" help:"Specify new GUI authentication password (use - to read from standard input)"`
+	NoPortProbing bool   `help:"Don't try to find free ports for GUI and listen addresses on first startup" env:"STNOPORTPROBING"`
 }
 
 func (c *CLI) Run(l logger.Logger) error {
@@ -41,13 +40,13 @@ func (c *CLI) Run(l logger.Logger) error {
 		c.GUIPassword = string(password)
 	}
 
-	if err := Generate(l, locations.GetBaseDir(locations.ConfigBaseDir), c.GUIUser, c.GUIPassword, c.NoDefaultFolder, c.NoPortProbing); err != nil {
+	if err := Generate(l, locations.GetBaseDir(locations.ConfigBaseDir), c.GUIUser, c.GUIPassword, c.NoPortProbing); err != nil {
 		return fmt.Errorf("failed to generate config and keys: %w", err)
 	}
 	return nil
 }
 
-func Generate(l logger.Logger, confDir, guiUser, guiPassword string, noDefaultFolder, skipPortProbing bool) error {
+func Generate(l logger.Logger, confDir, guiUser, guiPassword string, skipPortProbing bool) error {
 	dir, err := fs.ExpandTilde(confDir)
 	if err != nil {
 		return err
@@ -75,7 +74,7 @@ func Generate(l logger.Logger, confDir, guiUser, guiPassword string, noDefaultFo
 	cfgFile := locations.Get(locations.ConfigFile)
 	cfg, _, err := config.Load(cfgFile, myID, events.NoopLogger)
 	if fs.IsNotExist(err) {
-		if cfg, err = syncthing.DefaultConfig(cfgFile, myID, events.NoopLogger, noDefaultFolder, skipPortProbing); err != nil {
+		if cfg, err = syncthing.DefaultConfig(cfgFile, myID, events.NoopLogger, skipPortProbing); err != nil {
 			return fmt.Errorf("create config: %w", err)
 		}
 	} else if err != nil {

cmd/syncthing/main.go

@@ -22,7 +22,6 @@ import (
 	"path"
 	"path/filepath"
 	"regexp"
-	"runtime"
 	"runtime/pprof"
 	"sort"
 	"strconv"
@@ -173,7 +172,6 @@ type serveCmd struct {
 	LogMaxFiles               int           `name:"log-max-old-files" help:"Number of old files to keep (zero to keep only current)" default:"${logMaxFiles}" placeholder:"N" env:"STLOGMAXOLDFILES"`
 	LogMaxSize                int           `help:"Maximum size of any file (zero to disable log rotation)" default:"${logMaxSize}" placeholder:"BYTES" env:"STLOGMAXSIZE"`
 	NoBrowser                 bool          `help:"Do not start browser" env:"STNOBROWSER"`
-	NoDefaultFolder           bool          `help:"Don't create the \"default\" folder on first startup" env:"STNODEFAULTFOLDER"`
 	NoPortProbing             bool          `help:"Don't try to find free ports for GUI and listen addresses on first startup" env:"STNOPORTPROBING"`
 	NoRestart                 bool          `help:"Do not restart Syncthing when exiting due to API/GUI command, upgrade, or crash" env:"STNORESTART"`
 	NoUpgrade                 bool          `help:"Disable automatic upgrades" env:"STNOUPGRADE"`
@@ -442,7 +440,7 @@ func (c *serveCmd) syncthingMain() {
 	}
 
 	// Ensure we are the only running instance
-	lf := flock.New(locations.Get(locations.CertFile))
+	lf := flock.New(locations.Get(locations.LockFile))
 	locked, err := lf.TryLock()
 	if err != nil {
 		l.Warnln("Failed to acquire lock:", err)
@@ -464,7 +462,7 @@ func (c *serveCmd) syncthingMain() {
 	evLogger := events.NewLogger()
 	earlyService.Add(evLogger)
 
-	cfgWrapper, err := syncthing.LoadConfigAtStartup(locations.Get(locations.ConfigFile), cert, evLogger, c.AllowNewerConfig, c.NoDefaultFolder, c.NoPortProbing)
+	cfgWrapper, err := syncthing.LoadConfigAtStartup(locations.Get(locations.ConfigFile), cert, evLogger, c.AllowNewerConfig, c.NoPortProbing)
 	if err != nil {
 		l.Warnln("Failed to initialize config:", err)
 		os.Exit(svcutil.ExitError.AsInt())
@@ -535,8 +533,19 @@ func (c *serveCmd) syncthingMain() {
 		Verbose:               c.Verbose,
 		DBMaintenanceInterval: c.DBMaintenanceInterval,
 	}
-	if c.Audit {
-		appOpts.AuditWriter = auditWriter(c.AuditFile)
+
+	if c.Audit || cfgWrapper.Options().AuditEnabled {
+		l.Infoln("Auditing is enabled.")
+
+		auditFile := cfgWrapper.Options().AuditFile
+
+		// Ignore config option if command-line option is set
+		if c.AuditFile != "" {
+			l.Debugln("Using the audit file from the command-line parameter.")
+			auditFile = c.AuditFile
+		}
+
+		appOpts.AuditWriter = auditWriter(auditFile)
 	}
 
 	app, err := syncthing.New(cfgWrapper, sdb, evLogger, cert, appOpts)
@@ -585,7 +594,10 @@ func (c *serveCmd) syncthingMain() {
 		pprof.StopCPUProfile()
 	}
 
-	runtime.KeepAlive(lf) // ensure lock is still held to this point
+	// Best effort remove lockfile, doesn't matter if it succeeds
+	_ = lf.Unlock()
+	_ = os.Remove(locations.Get(locations.LockFile))
+
 	os.Exit(int(status))
 }
 
@@ -887,7 +899,7 @@ func (u upgradeCmd) Run() error {
 
 	release, err := checkUpgrade()
 	if err == nil {
-		lf := flock.New(locations.Get(locations.CertFile))
+		lf := flock.New(locations.Get(locations.LockFile))
 		locked, err := lf.TryLock()
 		if err != nil {
 			l.Warnln("Upgrade:", err)

go.mod

@@ -4,6 +4,7 @@ go 1.23.0
 
 require (
 	github.com/AudriusButkevicius/recli v0.0.7-0.20220911121932-d000ce8fbf0f
+	github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.0
 	github.com/alecthomas/kong v1.10.0
 	github.com/aws/aws-sdk-go v1.55.6
 	github.com/calmh/incontainer v1.0.0
@@ -52,6 +53,8 @@ require (
 )
 
 require (
+	github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0 // indirect
+	github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 // indirect
 	github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/cenkalti/backoff/v4 v4.3.0 // indirect

go.sum

@@ -2,8 +2,20 @@ filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=
 filippo.io/edwards25519 v1.1.0/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
 github.com/AudriusButkevicius/recli v0.0.7-0.20220911121932-d000ce8fbf0f h1:GmH5lT+moM7PbAJFBq57nH9WJ+wRnBXr/tyaYWbSAx8=
 github.com/AudriusButkevicius/recli v0.0.7-0.20220911121932-d000ce8fbf0f/go.mod h1:Nhfib1j/VFnLrXL9cHgA+/n2O6P5THuWelOnbfPNd78=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0 h1:g0EZJwz7xkXQiZAI5xi9f3WWFYBlX1CPTrR+NDToRkQ=
+github.com/Azure/azure-sdk-for-go/sdk/azcore v1.17.0/go.mod h1:XCW7KnZet0Opnr7HccfUw1PLc4CjHqpcaxW8DHklNkQ=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.0 h1:B/dfvscEQtew9dVuoxqxrUKKv8Ih2f55PydknDamU+g=
+github.com/Azure/azure-sdk-for-go/sdk/azidentity v1.8.0/go.mod h1:fiPSssYvltE08HJchL04dOy+RD4hgrjph0cwGGMntdI=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0 h1:ywEEhmNahHBihViHepv3xPBn1663uRv2t2q/ESv9seY=
+github.com/Azure/azure-sdk-for-go/sdk/internal v1.10.0/go.mod h1:iZDifYGJTIgIIkYRNWPENUnqx6bJ2xnSDFI2tjwZNuY=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.6.0 h1:PiSrjRPpkQNjrM8H0WwKMnZUdu1RGMtd/LdGKUrOo+c=
+github.com/Azure/azure-sdk-for-go/sdk/resourcemanager/storage/armstorage v1.6.0/go.mod h1:oDrbWx4ewMylP7xHivfgixbfGBT6APAwsSoHRKotnIc=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.0 h1:UXT0o77lXQrikd1kgwIPQOUect7EoR/+sbP4wQKdzxM=
+github.com/Azure/azure-sdk-for-go/sdk/storage/azblob v1.6.0/go.mod h1:cTvi54pg19DoT07ekoeMgE/taAwNtCShVeZqA+Iv2xI=
 github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358 h1:mFRzDkZVAjdal+s7s0MwaRv9igoPqLRdzOLzw/8Xvq8=
 github.com/Azure/go-ntlmssp v0.0.0-20221128193559-754e69321358/go.mod h1:chxPXzSsl7ZWRAuOIE23GDNzjWuZquvFlgA8xmpunjU=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2 h1:kYRSnvJju5gYVyhkij+RTJ/VR6QIUaCfWeaFm2ycsjQ=
+github.com/AzureAD/microsoft-authentication-library-for-go v1.3.2/go.mod h1:wP83P5OoQ5p6ip3ScPr0BAq0BvuPAvacpEuSzyouqAI=
 github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
 github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
@@ -69,6 +81,8 @@ github.com/go-task/slim-sprig/v3 v3.0.0 h1:sUs3vkvUymDpBKi3qH1YSqBQk9+9D/8M2mN1v
 github.com/go-task/slim-sprig/v3 v3.0.0/go.mod h1:W848ghGpv3Qj3dhTPRyJypKRiqCdHZiAzKg9hl15HA8=
 github.com/gofrs/flock v0.12.1 h1:MTLVXXHf8ekldpJk3AKicLij9MdwOWkZ+a/jHHZby9E=
 github.com/gofrs/flock v0.12.1/go.mod h1:9zxTsyu5xtJ9DK+1tFZyibEV7y3uwDxPPfbxeeHCoD0=
+github.com/golang-jwt/jwt/v5 v5.2.1 h1:OuVbFODueb089Lh128TAcimifWaLhJwVflnrgM17wHk=
+github.com/golang-jwt/jwt/v5 v5.2.1/go.mod h1:pqrtFR0X4osieyHYxtmOUWsAWrfe1Q5UVIyoH402zdk=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
 github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
@@ -189,6 +203,8 @@ github.com/oschwald/maxminddb-golang v1.13.1 h1:G3wwjdN9JmIK2o/ermkHM+98oX5fS+k5
 github.com/oschwald/maxminddb-golang v1.13.1/go.mod h1:K4pgV9N/GcK694KSTmVSDTODk4IsCNThNdTmnaBZ/F8=
 github.com/pierrec/lz4/v4 v4.1.22 h1:cKFw6uJDK+/gfw5BcDL0JL5aBsAFdsIT18eRtLj7VIU=
 github.com/pierrec/lz4/v4 v4.1.22/go.mod h1:gZWDp/Ze/IJXGXf23ltt2EXimqmTUXEy0GFuRQyBid4=
+github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c h1:+mdjkGKdHQG3305AYmdv1U2eRNDiU2ErMBj1gwrq8eQ=
+github.com/pkg/browser v0.0.0-20240102092130-5ac0b6a4141c/go.mod h1:7rwL4CYBLnjLxUqIJNnCWiEdr3bn6IUYi15bNlnbCCU=
 github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
@@ -220,8 +236,8 @@ github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94
 github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/riywo/loginshell v0.0.0-20200815045211-7d26008be1ab h1:ZjX6I48eZSFetPb41dHudEyVr5v953N15TsNZXlkcWY=
 github.com/riywo/loginshell v0.0.0-20200815045211-7d26008be1ab/go.mod h1:/PfPXh0EntGc3QAAyUaviy4S9tzy4Zp0e2ilq4voC6E=
-github.com/rogpeppe/go-internal v1.10.0 h1:TMyTOH3F/DB16zRVcYyreMH6GnZZrwQVAoYjRBZyWFQ=
-github.com/rogpeppe/go-internal v1.10.0/go.mod h1:UQnix2H7Ngw/k4C5ijL5+65zddjncjaFoBhdsK/akog=
+github.com/rogpeppe/go-internal v1.12.0 h1:exVL4IDcn6na9z1rAb56Vxr+CgyK3nn3O+epU5NdKM8=
+github.com/rogpeppe/go-internal v1.12.0/go.mod h1:E+RYuTGaKKdloAfM02xzb0FW3Paa99yedzYV+kq4uf4=
 github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sclevine/spec v1.4.0 h1:z/Q9idDcay5m5irkZ28M7PtQM4aOISzOpj4bUPkDee8=

gui/default/assets/lang/lang-et.json

@@ -9,9 +9,15 @@
     "Add Folder": "Lisa kaust",
     "Add new folder?": "Lisa uus kaust?",
     "Address": "Aadress",
+    "Addresses": "Aadressid",
+    "All Data": "Kõik andmed",
+    "All Time": "Kõik ajad",
+    "Allowed Networks": "Lubatud võrgud",
     "Alphabetic": "Tähestikuline",
     "Automatic upgrades": "Automaatsed uuendused",
     "Be careful!": "Ettevaatust!",
+    "Cancel": "Loobu",
+    "Changelog": "Muudatuste nimekiri",
     "Close": "Sulge",
     "Configured": "Seadistatud",
     "Connection Error": "Ühenduse viga",

gui/default/syncthing/core/aboutModalView.html

@@ -30,7 +30,7 @@
         <h4 class="text-center" translate>The Syncthing Authors</h4>
         <div class="row">
           <div class="col-md-12" id="contributor-list">
-Jakob Borg, Audrius Butkevicius, Jesse Lucas, Simon Frei, Tomasz Wilczyński, Alexander Graf, Alexandre Viau, Anderson Mesquita, André Colomb, Antony Male, Ben Schulz, Caleb Callaway, Daniel Harte, Emil Lundberg, Eric P, Evgeny Kuznetsov, Lars K.W. Gohlke, Lode Hoste, Michael Ploujnikov, Nate Morrison, Philippe Schommers, Ross Smith II, Ryan Sullivan, Sergey Mishin, Stefan Tatschner, Wulf Weich, bt90, greatroar, Aaron Bieber, Adam Piggott, Adel Qalieh, Alan Pope, Alberto Donato, Aleksey Vasenev, Alessandro G., Alex Ionescu, Alex Lindeman, Alex Xu, Alexander Seiler, Alexandre Alves, Aman Gupta, Anatoli Babenia, Andreas Sommer, Andrew Dunham, Andrew Meyer, Andrew Rabert, Andrey D, Anjan Momi, Anthony Goeckner, Antoine Lamielle, Anur, Aranjedeath, Arkadiusz Tymiński, Aroun, Arthur Axel fREW Schmidt, Artur Zubilewicz, Aurélien Rainone, BAHADIR YILMAZ, Bart De Vries, Beat Reichenbach, Ben Curthoys, Ben Shepherd, Ben Sidhom, Benedikt Heine, Benedikt Morbach, Benjamin Nater, Benno Fünfstück, Benny Ng, Boqin Qin, Boris Rybalkin, Brandon Philips, Brendan Long, Brian R. Becker, Carsten Hagemann, Catfriend1, Cathryne Linenweaver, Cedric Staniewski, Chih-Hsuan Yen, Choongkyu, Chris Howie, Chris Joel, Chris Tonkinson, Christian Kujau, Christian Prescott, Colin Kennedy, Cromefire_, Cyprien Devillez, Dale Visser, Dan, Daniel Barczyk, Daniel Bergmann, Daniel Martí, Daniel Padrta, Darshil Chanpura, David Rimmer, DeflateAwning, Denis A., Dennis Wilson, DerRockWolf, Devon G. Redekopp, Dimitri Papadopoulos Orfanos, Dmitry Saveliev, Domenic Horner, Dominik Heidler, Elias Jarlebring, Elliot Huffman, Emil Hessman, Eng Zer Jun, Eric Lesiuta, Erik Meitner, Evan Spensley, Federico Castagnini, Felix, Felix Ableitner, Felix Lampe, Felix Unterpaintner, Francois-Xavier Gsell, Frank Isemann, Gahl Saraf, Gilli Sigurdsson, Gleb Sinyavskiy, Graham Miln, Greg, Gusted, Han Boetes, HansK-p, Harrison Jones, Heiko Zuerker, Hireworks, Hugo Locurcio, Iain Barnett, Ian Johnson, Ikko Ashimine, Ilya Brin, Iskander Sharipov, Jaakko Hannikainen, Jacek Szafarkiewicz, Jack Croft, Jacob, Jake Peterson, James O'Beirne, James Patterson, Jaroslav Lichtblau, Jaroslav Malec, Jaspitta, Jauder Ho, Jaya Chithra, Jaya Kumar, Jeffery To, Jens Diemer, Jerry Jacobs, Jochen Voss, Johan Andersson, Johan Vromans, John Rinehart, Jonas Thelemann, Jonathan, Jonathan Cross, Jonta, Jose Manuel Delicado, Julian Lehrhuber, Jörg Thalheim, Jędrzej Kula, K.B.Dharun Krishna, Kalle Laine, Kapil Sareen, Karol Różycki, Kebin Liu, Keith Harrison, Keith Turner, Kelong Cong, Ken'ichi Kamada, Kevin Allen, Kevin Bushiri, Kevin White, Jr., Kurt Fitzner, LSmithx2, Lars Lehtonen, Laurent Arnoud, Laurent Etiemble, Leo Arias, Liu Siyuan, Lord Landon Agahnim, Lukas Lihotzki, Luke Hamburg, Majed Abdulaziz, Marc Laporte, Marc Pujol, Marcin Dziadus, Marcus B Spencer, Marcus Legendre, Mario Majila, Mark Pulford, Martchus, Martin Polehla, Mateusz Naściszewski, Mateusz Ż, Matic Potočnik, Matt Burke, Matt Robenolt, Matteo Ruina, Maurizio Tomasi, Max, Max Schulze, MaximAL, Maxime Thirouin, Maximilian, MichaIng, Michael Jephcote, Michael Rienstra, Michael Tilli, Migelo, Mike Boone, MikeLund, MikolajTwarog, Mingxuan Lin, Naveen, Nicholas Rishel, Nick Busey, Nico Stapelbroek, Nicolas Braud-Santoni, Nicolas Perraut, Niels Peter Roest, Nils Jakobi, NinoM4ster, Nitroretro, NoLooseEnds, Oliver Freyermuth, Otiel, Oyebanji Jacob Mayowa, Pablo, Pascal Jungblut, Paul Brit, Pawel Palenica, Paweł Rozlach, Peter Badida, Peter Dave Hello, Peter Hoeg, Peter Marquardt, Phani Rithvij, Phil Davis, Phill Luby, Pier Paolo Ramon, Piotr Bejda, Pramodh KP, Quentin Hibon, Rahmi Pruitt, Richard Hartmann, Robert Carosi, Roberto Santalla, Robin Schoonover, Roman Zaynetdinov, Ruslan Yevdokymov, Ryan Qian, Sacheendra Talluri, Scott Klupfel, Sertonix, Severin von Wnuck-Lipinski, Shaarad Dalvi, Simon Mwepu, Simon Pickup, Sly_tom_cat, Sonu Kumar Saw, Stefan Kuntz, Steven Eckhoff, Suhas Gundimeda, Sven Bachmann, Sébastien WENSKE, Taylor Khan, Terrance, Thomas, Thomas Hipp, Tim Abell, Tim Howes, Tim Nordenfur, Tobias Frölich, Tobias Klauser, Tobias Nygren, Tobias Tom, Tom Jakubowski, Tommy Thorn, Tommy van der Vorst, Tully Robinson, Tyler Brazier, Tyler Kropp, Unrud, Veeti Paananen, Victor Buinsky, Vik, Vil Brekin, Vladimir Rusinov, WangXi, Will Rouesnel, William A. Kennington III, Xavier O., Yannic A., andresvia, andyleap, boomsquared, chenrui, chucic, cjc7373, cui fliter, d-volution, dashangcun, derekriemer, desbma, diemade, digital, entity0xfe, georgespatton, ghjklw, guangwu, gudvinr, ignacy123, janost, jaseg, jelle van der Waa, jtagcat, klemens, kylosus, luchenhan, luzpaz, marco-m, mathias4833, maxice8, mclang, mv1005, nf, orangekame3, otbutz, overkill, perewa, polyfloyd, red_led, rubenbe, sec65, vapatel2, villekalliomaki, wangguoliang, wouter bolsterlee, xarx00, xjtdy888, 佛跳墙, 落心
+Jakob Borg, Audrius Butkevicius, Jesse Lucas, Simon Frei, Tomasz Wilczyński, Alexander Graf, Alexandre Viau, Anderson Mesquita, André Colomb, Antony Male, Ben Schulz, Caleb Callaway, Daniel Harte, Emil Lundberg, Eric P, Evgeny Kuznetsov, Lars K.W. Gohlke, Lode Hoste, Michael Ploujnikov, Nate Morrison, Philippe Schommers, Ross Smith II, Ryan Sullivan, Sergey Mishin, Stefan Tatschner, Wulf Weich, bt90, greatroar, Aaron Bieber, Adam Piggott, Adel Qalieh, Alan Pope, Alberto Donato, Aleksey Vasenev, Alessandro G., Alex Ionescu, Alex Lindeman, Alex Xu, Alexander Seiler, Alexandre Alves, Aman Gupta, Anatoli Babenia, Andreas Sommer, Andrew Dunham, Andrew Meyer, Andrew Rabert, Andrey D, Anjan Momi, Anthony Goeckner, Antoine Lamielle, Anur, Aranjedeath, Arkadiusz Tymiński, Aroun, Arthur Axel fREW Schmidt, Artur Zubilewicz, Aurélien Rainone, BAHADIR YILMAZ, Bart De Vries, Beat Reichenbach, Ben Curthoys, Ben Shepherd, Ben Sidhom, Benedikt Heine, Benedikt Morbach, Benjamin Nater, Benno Fünfstück, Benny Ng, Boqin Qin, Boris Rybalkin, Brandon Philips, Brendan Long, Brian R. Becker, Carsten Hagemann, Catfriend1, Cathryne Linenweaver, Cedric Staniewski, Chih-Hsuan Yen, Choongkyu, Chris Howie, Chris Joel, Chris Tonkinson, Christian Kujau, Christian Prescott, Colin Kennedy, Cromefire_, Cyprien Devillez, Dale Visser, Dan, Daniel Barczyk, Daniel Bergmann, Daniel Martí, Daniel Padrta, Darshil Chanpura, David Rimmer, DeflateAwning, Denis A., Dennis Wilson, DerRockWolf, Devon G. Redekopp, Dimitri Papadopoulos Orfanos, Dmitry Saveliev, Domenic Horner, Dominik Heidler, Elias Jarlebring, Elliot Huffman, Emil Hessman, Eng Zer Jun, Eric Lesiuta, Erik Meitner, Evan Spensley, Federico Castagnini, Felix, Felix Ableitner, Felix Lampe, Felix Unterpaintner, Francois-Xavier Gsell, Frank Isemann, Gahl Saraf, Gilli Sigurdsson, Gleb Sinyavskiy, Graham Miln, Greg, Gusted, Han Boetes, HansK-p, Harrison Jones, Heiko Zuerker, Hireworks, Hugo Locurcio, Iain Barnett, Ian Johnson, Ikko Ashimine, Ilya Brin, Iskander Sharipov, Jaakko Hannikainen, Jacek Szafarkiewicz, Jack Croft, Jacob, Jake Peterson, James O'Beirne, James Patterson, Jaroslav Lichtblau, Jaroslav Malec, Jaspitta, Jauder Ho, Jaya Chithra, Jaya Kumar, Jeffery To, Jens Diemer, Jerry Jacobs, Jochen Voss, Johan Andersson, Johan Vromans, John Rinehart, Jonas Thelemann, Jonathan, Jonathan Cross, Jonta, Jose Manuel Delicado, Julian Lehrhuber, Jörg Thalheim, Jędrzej Kula, K.B.Dharun Krishna, Kalle Laine, Kapil Sareen, Karol Różycki, Kebin Liu, Keith Harrison, Keith Turner, Kelong Cong, Ken'ichi Kamada, Kevin Allen, Kevin Bushiri, Kevin White, Jr., Kurt Fitzner, LSmithx2, Lars Lehtonen, Laurent Arnoud, Laurent Etiemble, Leo Arias, Liu Siyuan, Lord Landon Agahnim, Lukas Lihotzki, Luke Hamburg, Majed Abdulaziz, Marc Laporte, Marc Pujol, Marcin Dziadus, Marcus B Spencer, Marcus Legendre, Mario Majila, Mark Pulford, Martchus, Martin Polehla, Mateusz Naściszewski, Mateusz Ż, Matic Potočnik, Matt Burke, Matt Robenolt, Matteo Ruina, Maurizio Tomasi, Max, Max Schulze, MaximAL, Maxime Thirouin, Maximilian, MichaIng, Michael Jephcote, Michael Rienstra, Michael Tilli, Migelo, Mike Boone, MikeLund, MikolajTwarog, Mingxuan Lin, Naveen, Nicholas Rishel, Nick Busey, Nico Stapelbroek, Nicolas Braud-Santoni, Nicolas Perraut, Niels Peter Roest, Nils Jakobi, NinoM4ster, Nitroretro, NoLooseEnds, Oliver Freyermuth, Otiel, Oyebanji Jacob Mayowa, Pablo, Pascal Jungblut, Paul Brit, Paul Donald, Pawel Palenica, Paweł Rozlach, Peter Badida, Peter Dave Hello, Peter Hoeg, Peter Marquardt, Phani Rithvij, Phil Davis, Phill Luby, Pier Paolo Ramon, Piotr Bejda, Pramodh KP, Quentin Hibon, Rahmi Pruitt, Richard Hartmann, Robert Carosi, Roberto Santalla, Robin Schoonover, Roman Zaynetdinov, Ruslan Yevdokymov, Ryan Qian, Sacheendra Talluri, Scott Klupfel, Sertonix, Severin von Wnuck-Lipinski, Shaarad Dalvi, Simon Mwepu, Simon Pickup, Sly_tom_cat, Sonu Kumar Saw, Stefan Kuntz, Steven Eckhoff, Suhas Gundimeda, Sven Bachmann, Sébastien WENSKE, Taylor Khan, Terrance, TheCreeper, Thomas, Thomas Hipp, Tim Abell, Tim Howes, Tim Nordenfur, Tobias Frölich, Tobias Klauser, Tobias Nygren, Tobias Tom, Tom Jakubowski, Tommy Thorn, Tommy van der Vorst, Tully Robinson, Tyler Brazier, Tyler Kropp, Unrud, Veeti Paananen, Victor Buinsky, Vik, Vil Brekin, Vladimir Rusinov, WangXi, Will Rouesnel, William A. Kennington III, Xavier O., Yannic A., andresvia, andyleap, boomsquared, chenrui, chucic, cjc7373, cui fliter, d-volution, dashangcun, derekriemer, desbma, diemade, digital, entity0xfe, georgespatton, ghjklw, guangwu, gudvinr, ignacy123, janost, jaseg, jelle van der Waa, jtagcat, klemens, kylosus, luchenhan, luzpaz, marco-m, mathias4833, maxice8, mclang, mv1005, nf, orangekame3, otbutz, overkill, perewa, polyfloyd, red_led, rubenbe, sec65, vapatel2, villekalliomaki, wangguoliang, wouter bolsterlee, xarx00, xjtdy888, 佛跳墙, 落心
           </div>
         </div>
       </div>
@@ -38,48 +38,94 @@ Jakob Borg, Audrius Butkevicius, Jesse Lucas, Simon Frei, Tomasz Wilczyński, Al
       <div id="about-includes" class="tab-pane">
         <p translate>Syncthing includes the following software or portions thereof:</p>
         <ul class="list-unstyled two-columns" id="copyright-notices">
-          <li><a href="http://getbootstrap.com/">Bootstrap</a>, Copyright &copy; 2011-2016 Twitter, Inc.</li>
+          <li><a href="https://getbootstrap.com/">Bootstrap</a>, Copyright &copy; 2011-2016 Twitter, Inc.</li>
           <li><a href="https://angularjs.org/">AngularJS</a>, Copyright &copy; 2010-2014, 2016 Google, Inc.</li>
-          <li><a href="http://www.daterangepicker.com/">Date Range Picker</a>, Copyright &copy; 2012-2018 Dan Grossman.</li>
+          <li><a href="https://www.daterangepicker.com/">Date Range Picker</a>, Copyright &copy; 2012-2018 Dan Grossman.</li>
           <li><a href="https://github.com/mar10/fancytree">JQuery Fancytree Plugin</a>, Copyright &copy; 2008-2018 Martin Wendt.</li>
+          <li><a href="https://fontawesome.com/">Font Awesome</a>Copyright &copy; 2024 Fonticons, Inc.</li>
           <li><a href="https://forkaweso.me/Fork-Awesome/">Fork Awesome</a>, Copyright &copy; 2018 Dave Gandy &amp; Fork Awesome.</li>
-          <li><a href="http://jquery.com/">jQuery JavaScript Library</a>, Copyright &copy; jQuery Foundation and other contributors.</li>
-          <li><a href="http://momentjs.com/">moment.js</a>, Copyright &copy; JS Foundation and other contributors.</li>
+          <li><a href="https://evanhahn.github.io/HumanizeDuration.js/">HumanDuration.js</a>, Copyright &copy; 2013-2024 Evan Hahn, portions copyright &copy; 2024 Ross Smith II.</li>
+          <li><a href="https://jquery.com/">jQuery JavaScript Library</a>, Copyright &copy; jQuery Foundation and other contributors.</li>
+          <li><a href="https://leafletjs.com/">leaflet.js</a>, Copyright &copy; 2010-2025 Volodymyr Agafonkin, Copyright &copy; 2010-2011 CloudMade.</li>
+          <li><a href="https://momentjs.com/">moment.js</a>, Copyright &copy; JS Foundation and other contributors.</li>
+          <li><a href="https://golang.org/">The Go Programming Language</a>, Copyright &copy; 2009 The Go Authors.</li>
           <li><a href="https://prometheus.io/">Prometheus</a>, Copyright &copy; 2012-2015 The Prometheus Authors.</li>
-          <li><a href="https://github.com/AudriusButkevicius/go-nat-pmp">AudriusButkevicius/go-nat-pmp</a>, Copyright &copy; 2013 John Howard Palevich.</li>
           <li><a href="https://github.com/AudriusButkevicius/recli">AudriusButkevicius/recli</a>, Copyright &copy; 2019 Audrius Butkevicius.</li>
+          <li><a href="https://github.com/Azure/azure-sdk-for-go">Azure/azure-sdk-for-go</a>, Copyright &copy; Microsoft Corporation.</li>
+          <li><a href="https://github.com/Azure/go-ntlmssp">Azure/go-ntlmssp</a>, Copyright &copy; 2016 Microsoft.</li>
+          <li><a href="https://github.com/alecthomas/kong">alecthomas/kong</a>, Copyright &copy; 2018 Alec Thomas.</li>
+          <li><a href="https://github.com/aws/aws-sdk-go">aws/aws-sdk-go</a>, Copyright &copy; 2015 Amazon.com, Inc. or its affiliates, Copyright 2014-2015 Stripe, Inc.</li>
           <li><a href="https://github.com/beorn7/perks">beorn7/perks</a>, Copyright &copy; 2013 Blake Mizerany.</li>
-          <li><a href="https://github.com/pierrec/lz4">pierrec/lz4</a>, Copyright &copy; 2015 Pierre Curto.</li>
-          <li><a href="https://github.com/calmh/du">calmh/du</a>, Public domain.</li>
+          <li><a href="https://github.com/calmh/incontainer">calmh/incontainer</a>, Copyright &copy; 2022 calmh.</li>
           <li><a href="https://github.com/calmh/xdr">calmh/xdr</a>, Copyright &copy; 2014 Jakob Borg.</li>
+          <li><a href="https://github.com/ccding/go-stun">ccding/go-stun</a>, Copyright &copy; 2016 Cong Ding.</li>
+          <li><a href="https://github.com/cenkalti/backoff">cenkalti/backoff</a>, Copyright &copy; 2014 Cenk Altı.</li>
+          <li><a href="https://github.com/certifi/gocertifi">certifi/gocertifi</a>, Copyright &copy; 2025, the certifi/gocertifi authors.</li>
+          <li><a href="https://github.com/cespare/xxhash">cespare/xxhash</a>, Copyright &copy; 2016 Caleb Spare.</li>
           <li><a href="https://github.com/chmduquesne/rollinghash">chmduquesne/rollinghash</a>, Copyright &copy; 2015 Christophe-Marie Duquesne.</li>
+          <li><a href="https://github.com/cpuguy83/go-md2man">cpuguy83/go-md2man</a>, Copyright &copy; 2014 Brian Goff.</li>
           <li><a href="https://github.com/d4l3k/messagediff">d4l3k/messagediff</a>, Copyright &copy; 2015 Tristan Rice.</li>
+          <li><a href="https://github.com/davecgh/go-spew">davecgh/go-spew</a>, Copyright &copy; 2012-2016 Dave Collins <dave@davec.name>.</li>
+          <li><a href="https://github.com/ebitengine/purego">ebitengine/purego</a>, Copyright &copy; 2022 The Ebitengine Authors.</li>
+          <li><a href="https://github.com/fsnotify/fsnotify">fsnotify/fsnotify</a>, Copyright &copy; 2012 The Go Authors.</li>
+          <li><a href="https://github.com/getsentry/raven-go">getsentry/raven-go</a>, Copyright &copy; 2013 Apollic Software, LLC.</li>
+          <li><a href="https://github.com/go-asn1-ber/asn1-ber">go-asn1-ber/asn1-ber</a>, Copyright &copy; 2011-2015 Michael Mitton (mmitton@gmail.com).</li>
+          <li><a href="https://github.com/go-ldap/ldap">go-ldap/ldap</a>, Copyright &copy; 2011-2015 Michael Mitton (mmitton@gmail.com).</li>
+          <li><a href="https://github.com/go-ole/go-ole">go-ole/go-ole</a>, Copyright &copy; 2013-2017 Yasuhiro Matsumoto, <mattn.jp@gmail.com>.</li>
+          <li><a href="https://github.com/go-task/slim-sprig">go-task/slim-sprig</a>, Copyright &copy; 2013-2020 Masterminds.</li>
+          <li><a href="https://github.com/uber-go/automaxprocs">go.uber.org/automaxprocs</a>, Copyright &copy; 2017 Uber Technologies, Inc.</li>
+          <li><a href="https://github.com/uber-go/mock">go.uber.org/mock</a>, Copyright &copy; 2010-2022 Google LLC.</li>
           <li><a href="https://github.com/gobwas/glob">gobwas/glob</a>, Copyright &copy; 2016 Sergey Kamardin.</li>
-          <li><a href="https://github.com/golang/groupcache">golang/groupcache</a>, Copyright &copy; 2013 Google Inc.</li>
-          <li><a href="https://github.com/golang/protobuf">golang/protobuf</a>, Copyright &copy; 2010 The Go Authors.</li>
+          <li><a href="https://github.com/gofrs/flock">gofrs/flock</a>, Copyright &copy; 2018-2025, The Gofrs.</li>
           <li><a href="https://github.com/golang/snappy">golang/snappy</a>, Copyright &copy; 2011 The Snappy-Go Authors.</li>
+          <li><a href="https://github.com/protocolbuffers/protobuf-go">google.golang.org/protobuf</a>, Copyright &copy; 2018 The Go Authors.</li>
+          <li><a href="https://github.com/google/pprof">google/pprof</a>, Copyright &copy; 2016 Google Inc.</li>
+          <li><a href="https://github.com/google/uuid">google/uuid</a>, Copyright &copy; 2009,2014 Google Inc.</li>
+          <li><a href="https://github.com/go-yaml/yaml">gopkg.in/yaml.v3</a>, Copyright &copy; 2006-2010 Kirill Simonov.</li>
+          <li><a href="https://github.com/greatroar/blobloom">greatroar/blobloom</a>, Copyright &copy; 2020-2024 the Blobloom authors.</li>
+          <li><a href="https://github.com/hashicorp/errwrap">hashicorp/errwrap</a>, Copyright &copy; 2014 HashiCorp, Inc.</li>
+          <li><a href="https://github.com/hashicorp/go-multierror">hashicorp/go-multierror</a>, Copyright &copy; 2014 HashiCorp, Inc.</li>
+          <li><a href="https://github.com/hashicorp/golang-lru">hashicorp/golang-lru</a>, Copyright &copy; 2014 HashiCorp, Inc.</li>
           <li><a href="https://github.com/jackpal/gateway">jackpal/gateway</a>, Copyright &copy; 2010 Jack Palevich.</li>
-          <li><a href="https://github.com/jmoiron/sqlx">jmoiron/sqlx</a>, Copyright &copy; 2013 Jason Moiron.</li>
+          <li><a href="https://github.com/jackpal/go-nat-pmp">jackpal/go-nat-pmp</a>, Copyright 2013 John Howard Palevich.</li>
+          <li><a href="https://github.com/jmespath/go-jmespath">jmespath/go-jmespath</a>, Copyright &copy; 2015 James Saryerwinnie.</li>
+          <li><a href="https://github.com/julienschmidt/httprouter">julienschmidt/httprouter</a>, Copyright &copy; 2013, Julien Schmidt.</li>
           <li><a href="https://github.com/kballard/go-shellquote">kballard/go-shellquote</a>, Copyright &copy; 2014 Kevin Ballard.</li>
-          <li><a href="https://github.com/mattn/go-isatty">mattn/go-isatty</a>, Copyright &copy; Yasuhiro MATSUMOTO.</li>
-          <li><a href="https://github.com/mattn/go-sqlite3">mattn/go-sqlite3</a>, Copyright &copy; 2014 Yasuhiro Matsumoto</li>
-          <li><a href="https://github.com/matttproud/golang_protobuf_extensions">matttproud/golang_protobuf_extensions</a>, Copyright &copy; 2012 Matt T. Proud.</li>
-          <li><a href="https://modernc.org/sqlite">modernc.org/sqlite</a>, Copyright &copy; 2017 The Sqlite Authors</li>
+          <li><a href="https://github.com/klauspost/compress">klauspost/compress</a>, Copyright &copy; 2012 The Go Authors.</li>
+          <li><a href="https://github.com/lufia/plan9stats">lufia/plan9stats</a>, Copyright &copy; 2019, KADOTA, Kyohei.</li>
+          <li><a href="https://github.com/maruel/panicparse">maruel/panicparse</a>, Copyright 2015 Marc-Antoine Ruel.</li>
+          <li><a href="https://github.com/maxbrunsfeld/counterfeiter">maxbrunsfeld/counterfeiter</a>, Copyright &copy; 2014 maxbrunsfeld.</li>
+          <li><a href="https://github.com/maxmind/geoipupdate">maxmind/geoipupdate</a>, Copyright &copy; 2018-2024 by MaxMind, Inc.</li>
+          <li><a href="https://github.com/miscreant/miscreant.go">miscreant/miscreant.go</a>, Copyright &copy; 2017-2019 The Miscreant Developers.</li>
+          <li><a href="https://github.com/munnerz/goautoneg">munnerz/goautoneg</a>, Copyright &copy; 2011, Open Knowledge Foundation Ltd.</li>
+          <li><a href="https://github.com/nxadm/tail">nxadm/tail</a>, Copyright &copy; 2014 ActiveState.</li>
+          <li><a href="https://github.com/onsi/ginkgo">onsi/ginkgo</a>, Copyright &copy; 2013-2014 Onsi Fakhouri.</li>
           <li><a href="https://github.com/oschwald/geoip2-golang">oschwald/geoip2-golang</a>, Copyright &copy; 2015, Gregory J. Oschwald.</li>
           <li><a href="https://github.com/oschwald/maxminddb-golang">oschwald/maxminddb-golang</a>, Copyright &copy; 2015, Gregory J. Oschwald.</li>
-          <li><a href="https://github.com/petermattis/goid">petermattis/goid</a>, Copyright &copy; 2015-2016 Peter Mattis.</li>
+          <li><a href="https://github.com/pierrec/lz4">pierrec/lz4</a>, Copyright &copy; 2015 Pierre Curto.</li>
           <li><a href="https://github.com/pkg/errors">pkg/errors</a>, Copyright &copy; 2015, Dave Cheney.</li>
+          <li><a href="https://github.com/pmezard/go-difflib">pmezard/go-difflib</a>, Copyright &copy; 2013, Patrick Mezard.</li>
+          <li><a href="https://github.com/posener/complete">posener/complete</a>, Copyright &copy; 2017 Eyal Posener.</li>
+          <li><a href="https://github.com/power-devops/perfstat">power-devops/perfstat</a>, Copyright &copy; 2020 Power DevOps.</li>
+          <li><a href="https://github.com/puzpuzpuz/xsync">puzpuzpuz/xsync</a>, Copyright &copy; 2025, the puzpuzpuz/xsync authors.</li>
+          <li><a href="https://github.com/quic-go/quic-go">quic-go/quic-go</a>, Copyright &copy; 2016 the quic-go authors & Google, Inc.</li>
+          <li><a href="https://github.com/rabbitmq/amqp091-go">rabbitmq/amqp091-go</a>, Copyright &copy; 2021 VMware, Inc. or its affiliates.</li>
           <li><a href="https://github.com/rcrowley/go-metrics">rcrowley/go-metrics</a>, Copyright &copy; 2012 Richard Crowley.</li>
-          <li><a href="https://github.com/sasha-s/go-deadlock">sasha-s/go-deadlock</a>, Copyright &copy; 2016 sasha-s.</li>
+          <li><a href="https://github.com/riywo/loginshell">riywo/loginshell</a>, Copyright &copy; 2019 Ryosuke IWANAGA.</li>
+          <li><a href="https://github.com/russross/blackfriday">russross/blackfriday</a>, Copyright &copy; 2011 Russ Ross.</li>
+          <li><a href="https://github.com/shirou/gopsutil">shirou/gopsutil</a>, Copyright &copy; 2014, WAKAYAMA Shirou.</li>
+          <li><a href="https://github.com/kubernetes-sigs/yaml">sigs.k8s.io/yaml</a>, Copyright &copy; 2014 Sam Ghods.</li>
+          <li><a href="https://github.com/stretchr/objx">stretchr/objx</a>, Copyright &copy; 2014 Stretchr, Inc.</li>
+          <li><a href="https://github.com/stretchr/testify">stretchr/testify</a>, Copyright &copy; 2012-2020 Mat Ryer, Tyler Bunnell and contributors.</li>
           <li><a href="https://github.com/syncthing/notify">syncthing/notify</a>, Copyright &copy; 2014-2015 The Notify Authors.</li>
           <li><a href="https://github.com/syndtr/goleveldb">syndtr/goleveldb</a>, Copyright &copy; 2012 Suryandaru Triandana.</li>
           <li><a href="https://github.com/thejerf/suture">thejerf/suture</a>, Copyright &copy; 2014-2015 Barracuda Networks, Inc.</li>
-          <li><a href="https://github.com/urfave/cli">urfave/cli</a>, Copyright &copy; 2016 Jeremy Saenz &amp; Contributors.</li>
+          <li><a href="https://github.com/tklauser/go-sysconf">tklauser/go-sysconf</a>, Copyright &copy; 2018-2022, Tobias Klauser.</li>
+          <li><a href="https://github.com/tklauser/numcpus">tklauser/numcpus</a>, Copyright &copy; 2018-2024 Tobias Klauser.</li>
+          <li><a href="https://github.com/urfave/cli">urfave/cli</a>, Copyright &copy; 2016 Jeremy Saenz & Contributors.</li>
           <li><a href="https://github.com/vitrun/qart">vitrun/qart</a>, Copyright &copy; 2010-2011 The Go Authors.</li>
-          <li><a href="https://gopkg.in/asn1-ber.v1">gopkg.in/asn1-ber.v1</a>, Copyright &copy; 2011-2015 Michael Mitton, portions Copyright &copy; 2015-2016 go-asn1-ber Authors.</li>
-          <li><a href="https://gopkg.in/ldap.v2">gopkg.in/ldap.v2</a>, Copyright &copy; 2011-2015 Michael Mitton, portions Copyright &copy; 2015-2016 go-ldap Authors.</li>
-          <li><a href="https://golang.org">The Go Programming Language</a>, Copyright &copy; 2009 The Go Authors.</li>
-          <li>Font Awesome by Dave Gandy - <a href="http://fontawesome.io/">http://fontawesome.io</a></li>
+          <li><a href="https://github.com/willabides/kongplete">willabides/kongplete</a>, Copyright &copy; 2020 WillAbides.</li>
+          <li><a href="https://github.com/yusufpapurcu/wmi">yusufpapurcu/wmi</a>, Copyright &copy; 2013 Stack Exchange.</li>
         </ul>
       </div>
 

internal/blob/azureblob/azureblob.go

@@ -0,0 +1,80 @@
+// Copyright (C) 2025 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at https://mozilla.org/MPL/2.0/.
+
+package azureblob
+
+import (
+	"context"
+	"io"
+	"time"
+
+	stblob "github.com/syncthing/syncthing/internal/blob"
+
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob"
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/blob"
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/blockblob"
+	"github.com/Azure/azure-sdk-for-go/sdk/storage/azblob/container"
+)
+
+var _ stblob.Store = (*BlobStore)(nil)
+
+type BlobStore struct {
+	client    *azblob.Client
+	container string
+}
+
+func NewBlobStore(accountName, accountKey, containerName string) (*BlobStore, error) {
+	credential, err := azblob.NewSharedKeyCredential(accountName, accountKey)
+	if err != nil {
+		return nil, err
+	}
+	url := "https://" + accountName + ".blob.core.windows.net/"
+	sc, err := azblob.NewClientWithSharedKeyCredential(url, credential, &azblob.ClientOptions{})
+	if err != nil {
+		return nil, err
+	}
+	// This errors when the container already exists, which we ignore.
+	_, _ = sc.CreateContainer(context.Background(), containerName, &container.CreateOptions{})
+	return &BlobStore{
+		client:    sc,
+		container: containerName,
+	}, nil
+}
+
+func (a *BlobStore) Upload(ctx context.Context, key string, data io.Reader) error {
+	_, err := a.client.UploadStream(ctx, a.container, key, data, &blockblob.UploadStreamOptions{})
+	return err
+}
+
+func (a *BlobStore) Download(ctx context.Context, key string, w stblob.Writer) error {
+	resp, err := a.client.DownloadStream(ctx, a.container, key, &blob.DownloadStreamOptions{})
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+	_, err = io.Copy(w, resp.Body)
+	return err
+}
+
+func (a *BlobStore) LatestKey(ctx context.Context) (string, error) {
+	opts := &azblob.ListBlobsFlatOptions{}
+	pager := a.client.NewListBlobsFlatPager(a.container, opts)
+	var latest string
+	var lastModified time.Time
+	for pager.More() {
+		page, err := pager.NextPage(ctx)
+		if err != nil {
+			return "", err
+		}
+		for _, blob := range page.Segment.BlobItems {
+			if latest == "" || blob.Properties.LastModified.After(lastModified) {
+				latest = *blob.Name
+				lastModified = *blob.Properties.LastModified
+			}
+		}
+	}
+	return latest, nil
+}

internal/blob/interface.go

@@ -0,0 +1,23 @@
+// Copyright (C) 2025 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at https://mozilla.org/MPL/2.0/.
+
+package blob
+
+import (
+	"context"
+	"io"
+)
+
+type Store interface {
+	Upload(ctx context.Context, key string, r io.Reader) error
+	Download(ctx context.Context, key string, w Writer) error
+	LatestKey(ctx context.Context) (string, error)
+}
+
+type Writer interface {
+	io.Writer
+	io.WriterAt
+}

internal/blob/s3/s3.go

@@ -7,6 +7,7 @@
 package s3
 
 import (
+	"context"
 	"io"
 	"time"
 
@@ -15,8 +16,11 @@ import (
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/s3"
 	"github.com/aws/aws-sdk-go/service/s3/s3manager"
+	"github.com/syncthing/syncthing/internal/blob"
 )
 
+var _ blob.Store = (*Session)(nil)
+
 type Session struct {
 	bucket string
 	s3sess *session.Session
@@ -26,9 +30,10 @@ type Object = s3.Object
 
 func NewSession(endpoint, region, bucket, accessKeyID, secretKey string) (*Session, error) {
 	sess, err := session.NewSession(&aws.Config{
-		Region:      aws.String(region),
-		Endpoint:    aws.String(endpoint),
-		Credentials: credentials.NewStaticCredentials(accessKeyID, secretKey, ""),
+		Region:           aws.String(region),
+		Endpoint:         aws.String(endpoint),
+		Credentials:      credentials.NewStaticCredentials(accessKeyID, secretKey, ""),
+		S3ForcePathStyle: aws.Bool(true),
 	})
 	if err != nil {
 		return nil, err
@@ -39,7 +44,7 @@ func NewSession(endpoint, region, bucket, accessKeyID, secretKey string) (*Sessi
 	}, nil
 }
 
-func (s *Session) Upload(r io.Reader, key string) error {
+func (s *Session) Upload(_ context.Context, key string, r io.Reader) error {
 	uploader := s3manager.NewUploader(s.s3sess)
 	_, err := uploader.Upload(&s3manager.UploadInput{
 		Bucket: aws.String(s.bucket),
@@ -49,7 +54,31 @@ func (s *Session) Upload(r io.Reader, key string) error {
 	return err
 }
 
-func (s *Session) List(fn func(*Object) bool) error {
+func (s *Session) Download(_ context.Context, key string, w blob.Writer) error {
+	downloader := s3manager.NewDownloader(s.s3sess)
+	_, err := downloader.Download(w, &s3.GetObjectInput{
+		Bucket: aws.String(s.bucket),
+		Key:    aws.String(key),
+	})
+	return err
+}
+
+func (s *Session) LatestKey(_ context.Context) (string, error) {
+	var latestKey string
+	var lastModified time.Time
+	if err := s.list(func(obj *Object) bool {
+		if latestKey == "" || obj.LastModified.After(lastModified) {
+			latestKey = *obj.Key
+			lastModified = *obj.LastModified
+		}
+		return true
+	}); err != nil {
+		return "", err
+	}
+	return latestKey, nil
+}
+
+func (s *Session) list(fn func(*Object) bool) error {
 	svc := s3.New(s.s3sess)
 
 	opts := &s3.ListObjectsV2Input{
@@ -75,27 +104,3 @@ func (s *Session) List(fn func(*Object) bool) error {
 
 	return nil
 }
-
-func (s *Session) LatestKey() (string, error) {
-	var latestKey string
-	var lastModified time.Time
-	if err := s.List(func(obj *Object) bool {
-		if latestKey == "" || obj.LastModified.After(lastModified) {
-			latestKey = *obj.Key
-			lastModified = *obj.LastModified
-		}
-		return true
-	}); err != nil {
-		return "", err
-	}
-	return latestKey, nil
-}
-
-func (s *Session) Download(w io.WriterAt, key string) error {
-	downloader := s3manager.NewDownloader(s.s3sess)
-	_, err := downloader.Download(w, &s3.GetObjectInput{
-		Bucket: aws.String(s.bucket),
-		Key:    aws.String(key),
-	})
-	return err
-}

internal/db/sqlite/db_global_test.go

@@ -268,7 +268,7 @@ func TestDontNeedIgnored(t *testing.T) {
 	}
 }
 
-func TestRemoveDontNeedLocalIgnored(t *testing.T) {
+func TestRemoteDontNeedLocalIgnored(t *testing.T) {
 	t.Parallel()
 
 	db, err := OpenTemp()
@@ -392,6 +392,32 @@ func TestRemoteDontNeedDeletedMissing(t *testing.T) {
 		t.Log(names)
 		t.Error("need no files")
 	}
+
+	// Another remote has announced it, but has set the invalid bit,
+	// presumably it's being ignored.
+	file = genFile("test1", 1, 103)
+	file.SetIgnored()
+	err = db.Update(folderID, protocol.DeviceID{43}, []protocol.FileInfo{file})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	// They don't need it, either
+	s, err = db.CountNeed(folderID, protocol.DeviceID{43})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if s.Bytes != 0 || s.Files != 0 || s.Deleted != 0 {
+		t.Log(s)
+		t.Error("bad need")
+	}
+
+	// It shouldn't show up in their need list
+	names = mustCollect[protocol.FileInfo](t)(db.AllNeededGlobalFiles(folderID, protocol.DeviceID{42}, config.PullOrderAlphabetic, 0, 0))
+	if len(names) != 0 {
+		t.Log(names)
+		t.Error("need no files")
+	}
 }
 
 func TestNeedRemoteSymlinkAndDir(t *testing.T) {

internal/db/sqlite/db_test.go

@@ -1109,6 +1109,54 @@ func TestErrorWrap(t *testing.T) {
 	}
 }
 
+func TestStrangeDeletedGlobalBug(t *testing.T) {
+	// This exercises an edge case with serialisation and ordering of
+	// version vectors. It does not need to make sense, it just needs to
+	// pass.
+
+	t.Parallel()
+
+	sdb, err := OpenTemp()
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() {
+		if err := sdb.Close(); err != nil {
+			t.Fatal(err)
+		}
+	})
+
+	// One remote device announces the original version of the file
+
+	file := genFile("test", 1, 1)
+	file.Version = protocol.Vector{Counters: []protocol.Counter{{ID: 35494436325452, Value: 1742900373}}}
+	t.Log("orig", file.Version)
+	sdb.Update(folderID, protocol.DeviceID{42}, []protocol.FileInfo{file})
+
+	// Another one announces a newer one that is deleted
+
+	del := file
+	del.SetDeleted(43)
+	del.Version = protocol.Vector{Counters: []protocol.Counter{{ID: 55445057455644, Value: 1742918457}, {ID: 35494436325452, Value: 1742900373}}}
+	t.Log("del", del.Version)
+	sdb.Update(folderID, protocol.DeviceID{43}, []protocol.FileInfo{del})
+
+	// We have an instance of the original file
+
+	sdb.Update(folderID, protocol.LocalDeviceID, []protocol.FileInfo{file})
+
+	// Which one is the global? It should be the deleted one, clearly.
+
+	g, _, err := sdb.GetGlobalFile(folderID, "test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if !g.Deleted {
+		t.Log(g)
+		t.Fatal("should be deleted")
+	}
+}
+
 func mustCollect[T any](t *testing.T) func(it iter.Seq[T], errFn func() error) []T {
 	t.Helper()
 	return func(it iter.Seq[T], errFn func() error) []T {

internal/db/sqlite/folderdb_counts.go

@@ -97,7 +97,7 @@ func (s *folderDB) needSizeRemote(device protocol.DeviceID) (db.Counts, error) {
 		WHERE g.local_flags & {{.FlagLocalGlobal}} != 0 AND g.deleted AND NOT g.invalid AND EXISTS (
 			SELECT 1 FROM FILES f
 			INNER JOIN devices d ON d.idx = f.device_idx
-			WHERE f.name = g.name AND d.device_id = ? AND NOT f.deleted
+			WHERE f.name = g.name AND d.device_id = ? AND NOT f.deleted AND NOT f.invalid
 		)
 		GROUP BY g.type, g.local_flags, g.deleted
 	`).Select(&res, device.String(),

internal/db/sqlite/folderdb_global.go

@@ -148,11 +148,11 @@ func (s *folderDB) neededGlobalFilesLocal(selectOpts string) (iter.Seq[protocol.
 func (s *folderDB) neededGlobalFilesRemote(device protocol.DeviceID, selectOpts string) (iter.Seq[protocol.FileInfo], func() error) {
 	// Select:
 	//
-	// - all the valid, non-deleted global files that don't have a corresponding
-	//   remote file with the same version.
+	// - all the valid, non-deleted global files that don't have a
+	//   corresponding remote file with the same version.
 	//
-	// - all the valid, deleted global files that have a corresponding non-deleted
-	//   remote file (of any version)
+	// - all the valid, deleted global files that have a corresponding
+	//   non-deleted and valid remote file (of any version)
 
 	it, errFn := iterStructs[indirectFI](s.stmt(`
 		SELECT fi.fiprotobuf, bl.blprotobuf, g.name, g.size, g.modified FROM fileinfos fi
@@ -172,7 +172,7 @@ func (s *folderDB) neededGlobalFilesRemote(device protocol.DeviceID, selectOpts
 		WHERE g.local_flags & {{.FlagLocalGlobal}} != 0 AND g.deleted AND NOT g.invalid AND EXISTS (
 			SELECT 1 FROM FILES f
 			INNER JOIN devices d ON d.idx = f.device_idx
-			WHERE f.name = g.name AND d.device_id = ? AND NOT f.deleted
+			WHERE f.name = g.name AND d.device_id = ? AND NOT f.deleted AND NOT f.invalid
 		)
 	`+selectOpts).Queryx(
 		device.String(),

internal/db/sqlite/util.go

@@ -7,9 +7,11 @@
 package sqlite
 
 import (
+	"cmp"
 	"database/sql/driver"
 	"errors"
 	"iter"
+	"slices"
 
 	"github.com/jmoiron/sqlx"
 	"github.com/syncthing/syncthing/internal/gen/bep"
@@ -71,6 +73,11 @@ func (v *dbVector) Scan(value any) error {
 	if err != nil {
 		return wrap(err)
 	}
+
+	// This is only necessary because I messed up counter serialisation and
+	// thereby ordering in 2.0.0 betas, and can be removed in the future.
+	slices.SortFunc(vec.Counters, func(a, b protocol.Counter) int { return cmp.Compare(a.ID, b.ID) })
+
 	v.Vector = vec
 
 	return nil

internal/db/sqlite/util_test.go

@@ -0,0 +1,33 @@
+// Copyright (C) 2025 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at https://mozilla.org/MPL/2.0/.
+
+package sqlite
+
+import (
+	"testing"
+
+	"github.com/syncthing/syncthing/lib/protocol"
+)
+
+func TestDbvector(t *testing.T) {
+	vec := protocol.Vector{Counters: []protocol.Counter{{ID: 42, Value: 7}, {ID: 123456789, Value: 42424242}}}
+	dbVec := dbVector{vec}
+	val, err := dbVec.Value()
+	if err != nil {
+		t.Fatal(val)
+	}
+
+	var dbVec2 dbVector
+	if err := dbVec2.Scan(val); err != nil {
+		t.Fatal(err)
+	}
+
+	if !dbVec2.Vector.Equal(vec) {
+		t.Log(vec)
+		t.Log(dbVec2.Vector)
+		t.Fatal("should match")
+	}
+}

lib/api/api_auth.go

@@ -18,6 +18,7 @@ import (
 	ldap "github.com/go-ldap/ldap/v3"
 	"github.com/syncthing/syncthing/lib/config"
 	"github.com/syncthing/syncthing/lib/events"
+	"github.com/syncthing/syncthing/lib/osutil"
 	"github.com/syncthing/syncthing/lib/rand"
 )
 
@@ -27,15 +28,54 @@ const (
 	randomTokenLength  = 64
 )
 
-func emitLoginAttempt(success bool, username, address string, evLogger events.Logger) {
-	evLogger.Log(events.LoginAttempt, map[string]interface{}{
+func emitLoginAttempt(success bool, username string, r *http.Request, evLogger events.Logger) {
+	remoteAddress, proxy := remoteAddress(r)
+	evData := map[string]any{
 		"success":       success,
 		"username":      username,
-		"remoteAddress": address,
-	})
-	if !success {
-		l.Infof("Wrong credentials supplied during API authorization from %s", address)
+		"remoteAddress": remoteAddress,
 	}
+	if proxy != "" {
+		evData["proxy"] = proxy
+	}
+	evLogger.Log(events.LoginAttempt, evData)
+
+	if success {
+		return
+	}
+	if proxy != "" {
+		l.Infof("Wrong credentials supplied during API authorization from %s proxied by %s", remoteAddress, proxy)
+	} else {
+		l.Infof("Wrong credentials supplied during API authorization from %s", remoteAddress)
+	}
+}
+
+func remoteAddress(r *http.Request) (remoteAddr, proxy string) {
+	remoteAddr = r.RemoteAddr
+	remoteIP := osutil.IPFromString(r.RemoteAddr)
+
+	// parse X-Forwarded-For only if the proxy connects via unix socket, localhost or a LAN IP
+	var localProxy bool
+	if remoteIP != nil {
+		remoteAddr = remoteIP.String()
+		localProxy = remoteIP.IsLoopback() || remoteIP.IsPrivate() || remoteIP.IsLinkLocalUnicast()
+	} else if remoteAddr == "@" {
+		localProxy = true
+	}
+
+	if !localProxy {
+		return
+	}
+
+	forwardedAddr, _, _ := strings.Cut(r.Header.Get("X-Forwarded-For"), ",")
+	forwardedAddr = strings.TrimSpace(forwardedAddr)
+	forwardedIP := osutil.IPFromString(forwardedAddr)
+
+	if forwardedIP != nil {
+		proxy = remoteAddr
+		remoteAddr = forwardedIP.String()
+	}
+	return
 }
 
 func antiBruteForceSleep() {
@@ -51,7 +91,7 @@ func forbidden(w http.ResponseWriter) {
 	http.Error(w, "Forbidden", http.StatusForbidden)
 }
 
-func isNoAuthPath(path string) bool {
+func isNoAuthPath(path string, metricsWithoutAuth bool) bool {
 	// Local variable instead of module var to prevent accidental mutation
 	noAuthPaths := []string{
 		"/",
@@ -60,6 +100,10 @@ func isNoAuthPath(path string) bool {
 		"/rest/svc/lang", // Required to load language settings on login page
 	}
 
+	if metricsWithoutAuth {
+		noAuthPaths = append(noAuthPaths, "/metrics")
+	}
+
 	// Local variable instead of module var to prevent accidental mutation
 	noAuthPrefixes := []string{
 		// Static assets
@@ -115,7 +159,7 @@ func (m *basicAuthAndSessionMiddleware) ServeHTTP(w http.ResponseWriter, r *http
 	}
 
 	// Exception for static assets and REST calls that don't require authentication.
-	if isNoAuthPath(r.URL.Path) {
+	if isNoAuthPath(r.URL.Path, m.guiCfg.MetricsWithoutAuth) {
 		m.next.ServeHTTP(w, r)
 		return
 	}
@@ -148,7 +192,7 @@ func (m *basicAuthAndSessionMiddleware) passwordAuthHandler(w http.ResponseWrite
 		return
 	}
 
-	emitLoginAttempt(false, req.Username, r.RemoteAddr, m.evLogger)
+	emitLoginAttempt(false, req.Username, r, m.evLogger)
 	antiBruteForceSleep()
 	forbidden(w)
 }
@@ -171,7 +215,7 @@ func attemptBasicAuth(r *http.Request, guiCfg config.GUIConfiguration, ldapCfg c
 		return usernameFromIso, true
 	}
 
-	emitLoginAttempt(false, username, r.RemoteAddr, evLogger)
+	emitLoginAttempt(false, username, r, evLogger)
 	antiBruteForceSleep()
 	return "", false
 }

lib/api/api_csrf.go

@@ -78,7 +78,7 @@ func (m *csrfManager) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if isNoAuthPath(r.URL.Path) {
+	if isNoAuthPath(r.URL.Path, false) {
 		// REST calls that don't require authentication also do not
 		// need a CSRF token.
 		m.next.ServeHTTP(w, r)

lib/api/tokenmanager.go

@@ -189,7 +189,7 @@ func (m *tokenCookieManager) createSession(username string, persistent bool, w h
 		Path:   "/",
 	})
 
-	emitLoginAttempt(true, username, r.RemoteAddr, m.evLogger)
+	emitLoginAttempt(true, username, r, m.evLogger)
 }
 
 func (m *tokenCookieManager) hasValidSession(r *http.Request) bool {

lib/config/config_test.go

@@ -92,6 +92,8 @@ func TestDefaultValues(t *testing.T) {
 			RawStunServers:            []string{"default"},
 			AnnounceLANAddresses:      true,
 			FeatureFlags:              []string{},
+			AuditEnabled:              false,
+			AuditFile:                 "",
 			ConnectionPriorityTCPLAN:  10,
 			ConnectionPriorityQUICLAN: 20,
 			ConnectionPriorityTCPWAN:  30,
@@ -295,6 +297,8 @@ func TestOverriddenValues(t *testing.T) {
 		StunKeepaliveMinS:         900,
 		RawStunServers:            []string{"foo"},
 		FeatureFlags:              []string{"feature"},
+		AuditEnabled:              true,
+		AuditFile:                 "nggyu",
 		ConnectionPriorityTCPLAN:  40,
 		ConnectionPriorityQUICLAN: 45,
 		ConnectionPriorityTCPWAN:  50,

lib/config/guiconfiguration.go

@@ -25,6 +25,7 @@ type GUIConfiguration struct {
 	User                      string   `json:"user" xml:"user,omitempty"`
 	Password                  string   `json:"password" xml:"password,omitempty"`
 	AuthMode                  AuthMode `json:"authMode" xml:"authMode,omitempty"`
+	MetricsWithoutAuth        bool     `json:"metricsWithoutAuth" xml:"metricsWithoutAuth" default:"false"`
 	RawUseTLS                 bool     `json:"useTLS" xml:"tls,attr"`
 	APIKey                    string   `json:"apiKey" xml:"apikey,omitempty"`
 	InsecureAdminAccess       bool     `json:"insecureAdminAccess" xml:"insecureAdminAccess,omitempty"`

lib/config/optionsconfiguration.go

@@ -67,22 +67,21 @@ type OptionsConfiguration struct {
 	AnnounceLANAddresses        bool     `json:"announceLANAddresses" xml:"announceLANAddresses" default:"true"`
 	SendFullIndexOnUpgrade      bool     `json:"sendFullIndexOnUpgrade" xml:"sendFullIndexOnUpgrade"`
 	FeatureFlags                []string `json:"featureFlags" xml:"featureFlag"`
+	AuditEnabled                bool     `json:"auditEnabled" xml:"auditEnabled" default:"false"`
+	AuditFile                   string   `json:"auditFile" xml:"auditFile"`
 	// The number of connections at which we stop trying to connect to more
 	// devices, zero meaning no limit. Does not affect incoming connections.
 	ConnectionLimitEnough int `json:"connectionLimitEnough" xml:"connectionLimitEnough"`
 	// The maximum number of connections which we will allow in total, zero
 	// meaning no limit. Affects incoming connections and prevents
 	// attempting outgoing connections.
-	ConnectionLimitMax int `json:"connectionLimitMax" xml:"connectionLimitMax"`
-	// When set, this allows TLS 1.2 on sync connections, where we otherwise
-	// default to TLS 1.3+ only.
-	InsecureAllowOldTLSVersions        bool `json:"insecureAllowOldTLSVersions" xml:"insecureAllowOldTLSVersions"`
-	ConnectionPriorityTCPLAN           int  `json:"connectionPriorityTcpLan" xml:"connectionPriorityTcpLan" default:"10"`
-	ConnectionPriorityQUICLAN          int  `json:"connectionPriorityQuicLan" xml:"connectionPriorityQuicLan" default:"20"`
-	ConnectionPriorityTCPWAN           int  `json:"connectionPriorityTcpWan" xml:"connectionPriorityTcpWan" default:"30"`
-	ConnectionPriorityQUICWAN          int  `json:"connectionPriorityQuicWan" xml:"connectionPriorityQuicWan" default:"40"`
-	ConnectionPriorityRelay            int  `json:"connectionPriorityRelay" xml:"connectionPriorityRelay" default:"50"`
-	ConnectionPriorityUpgradeThreshold int  `json:"connectionPriorityUpgradeThreshold" xml:"connectionPriorityUpgradeThreshold" default:"0"`
+	ConnectionLimitMax                 int `json:"connectionLimitMax" xml:"connectionLimitMax"`
+	ConnectionPriorityTCPLAN           int `json:"connectionPriorityTcpLan" xml:"connectionPriorityTcpLan" default:"10"`
+	ConnectionPriorityQUICLAN          int `json:"connectionPriorityQuicLan" xml:"connectionPriorityQuicLan" default:"20"`
+	ConnectionPriorityTCPWAN           int `json:"connectionPriorityTcpWan" xml:"connectionPriorityTcpWan" default:"30"`
+	ConnectionPriorityQUICWAN          int `json:"connectionPriorityQuicWan" xml:"connectionPriorityQuicWan" default:"40"`
+	ConnectionPriorityRelay            int `json:"connectionPriorityRelay" xml:"connectionPriorityRelay" default:"50"`
+	ConnectionPriorityUpgradeThreshold int `json:"connectionPriorityUpgradeThreshold" xml:"connectionPriorityUpgradeThreshold" default:"0"`
 	// Legacy deprecated
 	DeprecatedUPnPEnabled        bool     `json:"-" xml:"upnpEnabled,omitempty"`        // Deprecated: Do not use.
 	DeprecatedUPnPLeaseM         int      `json:"-" xml:"upnpLeaseMinutes,omitempty"`   // Deprecated: Do not use.
@@ -187,7 +186,7 @@ func (opts OptionsConfiguration) StunServers() []string {
 		case "default":
 			_, records, err := net.LookupSRV("stun", "udp", "syncthing.net")
 			if err != nil {
-				l.Warnln("Unable to resolve primary STUN servers via DNS:", err)
+				l.Debugf("Unable to resolve primary STUN servers via DNS:", err)
 			}
 
 			for _, record := range records {

lib/config/testdata/overridenvalues.xml

@@ -45,6 +45,8 @@
         <unackedNotificationID>asdfasdf</unackedNotificationID>
         <announceLANAddresses>false</announceLANAddresses>
         <featureFlag>feature</featureFlag>
+        <auditEnabled>true</auditEnabled>
+        <auditFile>nggyu</auditFile>
         <connectionPriorityTcpLan>40</connectionPriorityTcpLan>
         <connectionPriorityQuicLan>45</connectionPriorityQuicLan>
         <connectionPriorityTcpWan>50</connectionPriorityTcpWan>

lib/locations/locations.go

@@ -34,6 +34,7 @@ const (
 	AuditLog       LocationEnum = "auditLog"
 	GUIAssets      LocationEnum = "guiAssets"
 	DefFolder      LocationEnum = "defFolder"
+	LockFile       LocationEnum = "lockFile"
 )
 
 type BaseDirEnum string
@@ -127,6 +128,7 @@ var locationTemplates = map[LocationEnum]string{
 	AuditLog:       "${data}/audit-%{timestamp}.log",
 	GUIAssets:      "${config}/gui",
 	DefFolder:      "${userHome}/Sync",
+	LockFile:       "${data}/syncthing.lock",
 }
 
 var locations = make(map[LocationEnum]string)

lib/model/folder_sendrecv.go

@@ -1346,6 +1346,7 @@ func (f *sendReceiveFolder) copierRoutine(in <-chan copyBlocksState, pullChan ch
 
 			found := false
 			blocks, _ := f.model.sdb.AllLocalBlocksWithHash(block.Hash)
+		innerBlocks:
 			for _, e := range blocks {
 				res, err := f.model.sdb.AllLocalFilesWithBlocksHashAnyFolder(e.BlocklistHash)
 				if err != nil {
@@ -1387,7 +1388,7 @@ func (f *sendReceiveFolder) copierRoutine(in <-chan copyBlocksState, pullChan ch
 						}
 						if err != nil {
 							state.fail(fmt.Errorf("dst write: %w", err))
-							break
+							break innerBlocks
 						}
 						if fi.Name == state.file.Name {
 							state.copiedFromOrigin(block.Size)
@@ -1395,7 +1396,7 @@ func (f *sendReceiveFolder) copierRoutine(in <-chan copyBlocksState, pullChan ch
 							state.copiedFromElsewhere(block.Size)
 						}
 						found = true
-						break
+						break innerBlocks
 					}
 				}
 			}

lib/osutil/lowprio_linux.go

@@ -15,32 +15,6 @@ import (
 	"syscall"
 )
 
-const ioprioClassShift = 13
-
-type ioprioClass int
-
-const (
-	ioprioClassRT ioprioClass = iota + 1
-	ioprioClassBE
-	ioprioClassIdle
-)
-
-const (
-	ioprioWhoProcess = iota + 1
-	ioprioWhoPGRP
-	ioprioWhoUser
-)
-
-func ioprioSet(class ioprioClass, value int) error {
-	res, _, err := syscall.Syscall(syscall.SYS_IOPRIO_SET,
-		uintptr(ioprioWhoProcess), 0,
-		uintptr(class)<<ioprioClassShift|uintptr(value))
-	if res == 0 {
-		return nil
-	}
-	return err
-}
-
 // SetLowPriority lowers the process CPU scheduling priority, and possibly
 // I/O priority depending on the platform and OS.
 func SetLowPriority() error {
@@ -89,14 +63,13 @@ func SetLowPriority() error {
 		}
 	}
 
+	// For any new process, the default is to be assigned the IOPRIO_CLASS_BE
+	// scheduling class. This class directly maps the BE prio level to the
+	// niceness of a process, determined as: io_nice = (cpu_nice + 20) / 5.
+	// For example, a niceness of 11 results in an I/O priority of B6.
+	// https://www.kernel.org/doc/Documentation/block/ioprio.txt
 	if err := syscall.Setpriority(syscall.PRIO_PGRP, pidSelf, wantNiceLevel); err != nil {
 		return fmt.Errorf("set niceness: %w", err)
 	}
-
-	// Best effort, somewhere to the end of the scale (0 through 7 being the
-	// range).
-	if err := ioprioSet(ioprioClassBE, 5); err != nil {
-		return fmt.Errorf("set I/O priority: %w", err)
-	}
 	return nil
 }

lib/osutil/net.go

@@ -8,6 +8,7 @@ package osutil
 
 import (
 	"net"
+	"strings"
 )
 
 // GetInterfaceAddrs returns the IP networks of all interfaces that are up.
@@ -46,6 +47,17 @@ func GetInterfaceAddrs(includePtP bool) ([]*net.IPNet, error) {
 	return nets, nil
 }
 
+func IPFromString(addr string) net.IP {
+	// strip the port
+	host, _, err := net.SplitHostPort(addr)
+	if err != nil {
+		host = addr
+	}
+	// strip IPv6 zone identifier
+	host, _, _ = strings.Cut(host, "%")
+	return net.ParseIP(host)
+}
+
 func IPFromAddr(addr net.Addr) (net.IP, error) {
 	switch a := addr.(type) {
 	case *net.TCPAddr:

lib/osutil/osutil_test.go

@@ -135,3 +135,35 @@ func TestRenameOrCopy(t *testing.T) {
 		}
 	}
 }
+
+func TestIPFromString(t *testing.T) {
+	t.Parallel()
+
+	cases := []struct {
+		in  string
+		out string
+	}{
+		{"192.168.178.1", "192.168.178.1"},
+		{"192.168.178.1:8384", "192.168.178.1"},
+		{"fe80::20c:29ff:fe9a:46d2", "fe80::20c:29ff:fe9a:46d2"},
+		{"[fe80::20c:29ff:fe9a:46d2]:8384", "fe80::20c:29ff:fe9a:46d2"},
+		{"[fe80::20c:29ff:fe9a:46d2%eno1]:8384", "fe80::20c:29ff:fe9a:46d2"},
+		{"google.com", ""},
+		{"1.1.1.1.1", ""},
+		{"", ""},
+	}
+
+	for _, c := range cases {
+		ip := osutil.IPFromString(c.in)
+		var address string
+		if ip != nil {
+			address = ip.String()
+		} else {
+			address = ""
+		}
+
+		if c.out != address {
+			t.Fatalf("result should be %s != %s", c.out, address)
+		}
+	}
+}

lib/protocol/vector.go

@@ -31,7 +31,9 @@ func (v *Vector) String() string {
 		if i > 0 {
 			buf.WriteRune(',')
 		}
-		fmt.Fprintf(&buf, "%x:%d", c.ID, c.Value)
+		var idbs [8]byte
+		binary.BigEndian.PutUint64(idbs[:], uint64(c.ID))
+		fmt.Fprintf(&buf, "%x:%d", idbs, c.Value)
 	}
 	return buf.String()
 }

lib/syncthing/syncthing.go

@@ -251,13 +251,7 @@ func (a *App) startup() error {
 	// The TLS configuration is used for both the listening socket and outgoing
 	// connections.
 
-	var tlsCfg *tls.Config
-	if a.cfg.Options().InsecureAllowOldTLSVersions {
-		l.Infoln("TLS 1.2 is allowed on sync connections. This is less than optimally secure.")
-		tlsCfg = tlsutil.SecureDefaultWithTLS12()
-	} else {
-		tlsCfg = tlsutil.SecureDefaultTLS13()
-	}
+	tlsCfg := tlsutil.SecureDefaultTLS13()
 	tlsCfg.Certificates = []tls.Certificate{a.cert}
 	tlsCfg.NextProtos = []string{bepProtocolName}
 	tlsCfg.ClientAuth = tls.RequestClientCert

lib/syncthing/utils.go

@@ -65,7 +65,7 @@ func GenerateCertificate(certFile, keyFile string) (tls.Certificate, error) {
 	return tlsutil.NewCertificate(certFile, keyFile, tlsDefaultCommonName, deviceCertLifetimeDays)
 }
 
-func DefaultConfig(path string, myID protocol.DeviceID, evLogger events.Logger, noDefaultFolder, skipPortProbing bool) (config.Wrapper, error) {
+func DefaultConfig(path string, myID protocol.DeviceID, evLogger events.Logger, skipPortProbing bool) (config.Wrapper, error) {
 	newCfg := config.New(myID)
 
 	if skipPortProbing {
@@ -76,30 +76,18 @@ func DefaultConfig(path string, myID protocol.DeviceID, evLogger events.Logger,
 		return nil, err
 	}
 
-	if noDefaultFolder {
-		l.Infoln("We will skip creation of a default folder on first start")
-		return config.Wrap(path, newCfg, myID, evLogger), nil
-	}
-
-	fcfg := newCfg.Defaults.Folder.Copy()
-	fcfg.ID = "default"
-	fcfg.Label = "Default Folder"
-	fcfg.FilesystemType = config.FilesystemTypeBasic
-	fcfg.Path = locations.Get(locations.DefFolder)
-	newCfg.Folders = append(newCfg.Folders, fcfg)
-	l.Infoln("Default folder created and/or linked to new config")
 	return config.Wrap(path, newCfg, myID, evLogger), nil
 }
 
 // LoadConfigAtStartup loads an existing config. If it doesn't yet exist, it
-// creates a default one, without the default folder if noDefaultFolder is true.
-// Otherwise it checks the version, and archives and upgrades the config if
-// necessary or returns an error, if the version isn't compatible.
-func LoadConfigAtStartup(path string, cert tls.Certificate, evLogger events.Logger, allowNewerConfig, noDefaultFolder, skipPortProbing bool) (config.Wrapper, error) {
+// creates a default one. Otherwise it checks the version, and archives and
+// upgrades the config if necessary or returns an error, if the version
+// isn't compatible.
+func LoadConfigAtStartup(path string, cert tls.Certificate, evLogger events.Logger, allowNewerConfig, skipPortProbing bool) (config.Wrapper, error) {
 	myID := protocol.NewDeviceID(cert.Certificate[0])
 	cfg, originalVersion, err := config.Load(path, myID, evLogger)
 	if fs.IsNotExist(err) {
-		cfg, err = DefaultConfig(path, myID, evLogger, noDefaultFolder, skipPortProbing)
+		cfg, err = DefaultConfig(path, myID, evLogger, skipPortProbing)
 		if err != nil {
 			return nil, fmt.Errorf("failed to generate default config: %w", err)
 		}

lib/ur/contract/contract.go

@@ -184,6 +184,11 @@ type Report struct {
 	Country      string    `json:"country" metric:"location,gaugeVec:country"`
 	CountryCode  string    `json:"countryCode" metric:"location,gaugeVec:countryCode"`
 	MajorVersion string    `json:"majorVersion" metric:"reports_by_major_total,gaugeVec:version"`
+
+	// Once more to create a metric on OS, arch, distribution
+	DistDist string `json:"distDist" metric:"distribution,gaugeVec:distribution"`
+	DistOS   string `json:"distOS" metric:"distribution,gaugeVec:os"`
+	DistArch string `json:"distArch" metric:"distribution,gaugeVec:arch"`
 }
 
 func New() *Report {

man/stdiscosrv.1

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "STDISCOSRV" "1" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "STDISCOSRV" "1" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 stdiscosrv \- Syncthing Discovery Server
 .SH SYNOPSIS

man/strelaysrv.1

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "STRELAYSRV" "1" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "STRELAYSRV" "1" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 strelaysrv \- Syncthing Relay Server
 .SH SYNOPSIS

man/syncthing-bep.7

@@ -28,7 +28,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-BEP" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-BEP" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-bep \- Block Exchange Protocol v1
 .SH INTRODUCTION AND DEFINITIONS

man/syncthing-config.5

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-CONFIG" "5" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-CONFIG" "5" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-config \- Syncthing Configuration
 .SH SYNOPSIS
@@ -221,7 +221,6 @@ may no longer correspond to the defaults.
         <sendFullIndexOnUpgrade>false</sendFullIndexOnUpgrade>
         <connectionLimitEnough>0</connectionLimitEnough>
         <connectionLimitMax>0</connectionLimitMax>
-        <insecureAllowOldTLSVersions>false</insecureAllowOldTLSVersions>
     </options>
     <remoteIgnoredDevice time=\(dq2022\-01\-09T20:02:01Z\(dq id=\(dq5SYI2FS\-LW6YAXI\-JJDYETS\-NDBBPIO\-256MWBO\-XDPXWVG\-24QPUM4\-PDW4UQU\(dq name=\(dqbugger\(dq address=\(dq192.168.0.20:22000\(dq></remoteIgnoredDevice>
     <defaults>
@@ -1077,6 +1076,11 @@ header do not need this setting.
 When this setting is disabled, the GUI will not send 401 responses so users
 won’t see browser popups prompting for username and password.
 .UNINDENT
+.INDENT 0.0
+.TP
+.B metricsWithoutAuth
+If true, this allows access to the ‘/metrics’ without authentication.
+.UNINDENT
 .SH LDAP ELEMENT
 .INDENT 0.0
 .INDENT 3.5
@@ -1196,7 +1200,6 @@ Search filter for user searches.
     <sendFullIndexOnUpgrade>false</sendFullIndexOnUpgrade>
     <connectionLimitEnough>0</connectionLimitEnough>
     <connectionLimitMax>0</connectionLimitMax>
-    <insecureAllowOldTLSVersions>false</insecureAllowOldTLSVersions>
 </options>
 .EE
 .UNINDENT
@@ -1533,12 +1536,6 @@ no limit.  Affects incoming connections and prevents attempting outgoing
 connections.  The mechanism is described in detail in a \fI\%separate
 chapter\fP\&.
 .UNINDENT
-.INDENT 0.0
-.TP
-.B insecureAllowOldTLSVersions
-Only for compatibility with old versions of Syncthing on remote devices, as
-detailed in \fI\%insecureAllowOldTLSVersions\fP\&.
-.UNINDENT
 .SH DEFAULTS ELEMENT
 .INDENT 0.0
 .INDENT 3.5

man/syncthing-device-ids.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-DEVICE-IDS" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-DEVICE-IDS" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-device-ids \- Understanding Device IDs
 .sp

man/syncthing-event-api.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-EVENT-API" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-EVENT-API" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-event-api \- Event API
 .SH DESCRIPTION

man/syncthing-faq.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-FAQ" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-FAQ" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-faq \- Frequently Asked Questions
 .INDENT 0.0

man/syncthing-globaldisco.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-GLOBALDISCO" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-GLOBALDISCO" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-globaldisco \- Global Discovery Protocol v3
 .SH ANNOUNCEMENTS

man/syncthing-localdisco.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-LOCALDISCO" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-LOCALDISCO" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-localdisco \- Local Discovery Protocol v4
 .SH MODE OF OPERATION

man/syncthing-networking.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-NETWORKING" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-NETWORKING" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-networking \- Firewall Setup
 .SH ROUTER SETUP

man/syncthing-relay.7

@@ -28,7 +28,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-RELAY" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-RELAY" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-relay \- Relay Protocol v1
 .SH WHAT IS A RELAY?

man/syncthing-rest-api.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-REST-API" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-REST-API" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-rest-api \- REST API
 .sp
@@ -279,8 +279,7 @@ Returns the current configuration.
     \(dqsendFullIndexOnUpgrade\(dq: false,
     \(dqfeatureFlags\(dq: [],
     \(dqconnectionLimitEnough\(dq: 0,
-    \(dqconnectionLimitMax\(dq: 0,
-    \(dqinsecureAllowOldTLSVersions\(dq: false
+    \(dqconnectionLimitMax\(dq: 0
   },
   \(dqremoteIgnoredDevices\(dq: [
     {

man/syncthing-security.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-SECURITY" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-SECURITY" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-security \- Security Principles
 .sp

man/syncthing-stignore.5

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-STIGNORE" "5" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-STIGNORE" "5" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-stignore \- Prevent files from being synchronized to other nodes
 .SH SYNOPSIS

man/syncthing-versioning.7

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING-VERSIONING" "7" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING-VERSIONING" "7" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing-versioning \- Keep automatic backups of deleted files by other nodes
 .sp

man/syncthing.1

@@ -27,7 +27,7 @@ level margin: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .\" new: \\n[rst2man-indent\\n[rst2man-indent-level]]
 .in \\n[rst2man-indent\\n[rst2man-indent-level]]u
 ..
-.TH "SYNCTHING" "1" "Apr 04, 2025" "v1.29.3" "Syncthing"
+.TH "SYNCTHING" "1" "Apr 21, 2025" "v1.29.3" "Syncthing"
 .SH NAME
 syncthing \- Syncthing
 .SH SYNOPSIS

script/copyrights.go

@@ -0,0 +1,489 @@
+// Copyright (C) 2025 The Syncthing Authors.
+//
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this file,
+// You can obtain one at https://mozilla.org/MPL/2.0/.
+
+//go:build ignore
+// +build ignore
+
+// Updates the list of software copyrights in aboutModalView.html based on the
+// output of `go mod graph`.
+
+package main
+
+import (
+	"bufio"
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"net/url"
+	"os"
+	"os/exec"
+	"regexp"
+	"slices"
+	"strconv"
+	"strings"
+	"time"
+
+	"golang.org/x/net/html"
+)
+
+var copyrightMap = map[string]string{
+	// https://github.com/aws/aws-sdk-go/blob/main/NOTICE.txt#L2
+	"aws/aws-sdk-go": "Copyright © 2015 Amazon.com, Inc. or its affiliates, Copyright 2014-2015 Stripe, Inc",
+	// https://github.com/ccding/go-stun/blob/master/main.go#L1
+	"ccding/go-stun": "Copyright © 2016 Cong Ding",
+	// https://github.com/search?q=repo%3Acertifi%2Fgocertifi%20copyright&type=code
+	// "certifi/gocertifi": "No copyrights found",
+	// https://github.com/search?q=repo%3Aebitengine%2Fpurego%20copyright&type=code
+	"ebitengine/purego": "Copyright © 2022 The Ebitengine Authors",
+	// https://github.com/search?q=repo%3Agoogle%2Fpprof%20copyright&type=code
+	"google/pprof": "Copyright © 2016 Google Inc",
+	// https://github.com/greatroar/blobloom/blob/master/README.md?plain=1#L74
+	"greatroar/blobloom": "Copyright © 2020-2024 the Blobloom authors",
+	// https://github.com/jmespath/go-jmespath/blob/master/NOTICE#L2
+	"jmespath/go-jmespath": "Copyright © 2015 James Saryerwinnie",
+	// https://github.com/maxmind/geoipupdate/blob/main/README.md?plain=1#L140
+	"maxmind/geoipupdate": "Copyright © 2018-2024 by MaxMind, Inc",
+	// https://github.com/search?q=repo%3Apuzpuzpuz%2Fxsync%20copyright&type=code
+	// "puzpuzpuz/xsync": "No copyrights found",
+	// https://github.com/search?q=repo%3Atklauser%2Fnumcpus%20copyright&type=code
+	"tklauser/numcpus": "Copyright © 2018-2024 Tobias Klauser",
+	// https://github.com/search?q=repo%3Auber-go%2Fmock%20copyright&type=code
+	"go.uber.org/mock": "Copyright © 2010-2022 Google LLC",
+}
+
+var urlMap = map[string]string{
+	"fontawesome.io":             "https://github.com/FortAwesome/Font-Awesome",
+	"go.uber.org/automaxprocs":   "https://github.com/uber-go/automaxprocs",
+	"go.uber.org/mock":           "https://github.com/uber-go/mock",
+	"google.golang.org/protobuf": "https://github.com/protocolbuffers/protobuf-go",
+	"gopkg.in/yaml.v2":           "", // ignore, as gopkg.in/yaml.v3 supersedes
+	"gopkg.in/yaml.v3":           "https://github.com/go-yaml/yaml",
+	"sigs.k8s.io/yaml":           "https://github.com/kubernetes-sigs/yaml",
+}
+
+const htmlFile = "gui/default/syncthing/core/aboutModalView.html"
+
+type Type int
+
+const (
+	// TypeJS defines non-Go copyright notices
+	TypeJS Type = iota
+	// TypeKeep defines Go copyright notices for packages that are still used.
+	TypeKeep
+	// TypeToss defines Go copyright notices for packages that are no longer used.
+	TypeToss
+	// TypeNew defines Go copyright notices for new packages found via `go mod graph`.
+	TypeNew
+)
+
+type CopyrightNotice struct {
+	Type           Type
+	Name           string
+	HTML           string
+	Module         string
+	URL            string
+	Copyright      string
+	RepoURL        string
+	RepoCopyrights []string
+}
+
+var copyrightRe = regexp.MustCompile(`(?s)id="copyright-notices">(.+?)</ul>`)
+
+func main() {
+	bs := readAll(htmlFile)
+	matches := copyrightRe.FindStringSubmatch(string(bs))
+
+	if len(matches) <= 1 {
+		log.Fatal("Cannot find id copyright-notices in ", htmlFile)
+	}
+
+	modules := getModules()
+
+	notices := parseCopyrightNotices(matches[1])
+	old := len(notices)
+
+	// match up modules to notices
+	matched := map[string]bool{}
+	removes := 0
+	for i, notice := range notices {
+		if notice.Type == TypeJS {
+			continue
+		}
+		found := ""
+		for _, module := range modules {
+			if strings.Contains(module, notice.Name) {
+				found = module
+
+				break
+			}
+		}
+		if found != "" {
+			matched[found] = true
+			notices[i].Module = found
+
+			continue
+		}
+		removes++
+		fmt.Printf("Removing: %-40s %-55s %s\n", notice.Name, notice.URL, notice.Copyright)
+		notices[i].Type = TypeToss
+	}
+
+	// add new modules to notices
+	adds := 0
+	for _, module := range modules {
+		_, ok := matched[module]
+		if ok {
+			continue
+		}
+
+		adds++
+		notice := CopyrightNotice{}
+		notice.Name = module
+		if strings.HasPrefix(notice.Name, "github.com/") {
+			notice.Name = strings.ReplaceAll(notice.Name, "github.com/", "")
+		}
+		notice.Type = TypeNew
+
+		url, ok := urlMap[module]
+		if ok {
+			notice.URL = url
+			notice.RepoURL = url
+		} else {
+			notice.URL = "https://" + module
+			notice.RepoURL = "https://" + module
+		}
+		notices = append(notices, notice)
+	}
+
+	if removes == 0 && adds == 0 {
+		// authors.go is quiet, so let's be quiet too.
+		// fmt.Printf("No changes detected in %d modules and %d notices\n", len(modules), len(notices))
+		os.Exit(0)
+	}
+
+	// get copyrights via Github API for new modules
+	notfound := 0
+	for i, n := range notices {
+		if n.Type != TypeNew {
+			continue
+		}
+		copyright, ok := copyrightMap[n.Name]
+		if ok {
+			notices[i].Copyright = copyright
+
+			continue
+		}
+		notices[i].Copyright = defaultCopyright(n)
+
+		if strings.Contains(n.URL, "github.com/") {
+			notices[i].RepoURL = notices[i].URL
+			owner, repo := parseGitHubURL(n.URL)
+			licenseText := getLicenseText(owner, repo)
+			notices[i].RepoCopyrights = extractCopyrights(licenseText, n)
+
+			if len(notices[i].RepoCopyrights) > 0 {
+				notices[i].Copyright = notices[i].RepoCopyrights[0]
+			}
+
+			notices[i].HTML = fmt.Sprintf("<li><a href=\"%s\">%s</a>, %s.</li>", n.URL, n.Name, notices[i].Copyright)
+			if len(notices[i].RepoCopyrights) > 0 {
+				continue
+			}
+		}
+		fmt.Printf("Copyright not found: %-30s : using %q\n", n.Name, notices[i].Copyright)
+		notfound++
+	}
+
+	replacements := write(notices, bs)
+	fmt.Printf("Removed:              %3d\n", removes)
+	fmt.Printf("Added:                %3d\n", adds)
+	fmt.Printf("Copyrights not found: %3d\n", notfound)
+	fmt.Printf("Old package count:    %3d\n", old)
+	fmt.Printf("New package count:    %3d\n", replacements)
+}
+
+func write(notices []CopyrightNotice, bs []byte) int {
+	keys := make([]string, 0, len(notices))
+
+	noticeMap := make(map[string]CopyrightNotice, 0)
+
+	for _, n := range notices {
+		if n.Type != TypeKeep && n.Type != TypeNew {
+			continue
+		}
+		if n.Type == TypeNew {
+			fmt.Printf("Adding: %-40s %-55s %s\n", n.Name, n.URL, n.Copyright)
+		}
+		keys = append(keys, n.Name)
+		noticeMap[n.Name] = n
+	}
+
+	slices.Sort(keys)
+
+	indent := "          "
+	replacements := []string{}
+	for _, n := range notices {
+		if n.Type != TypeJS {
+			continue
+		}
+		replacements = append(replacements, indent+n.HTML)
+	}
+
+	for _, k := range keys {
+		n := noticeMap[k]
+		line := fmt.Sprintf("%s<li><a href=\"%s\">%s</a>, %s.</li>", indent, n.URL, n.Name, n.Copyright)
+		replacements = append(replacements, line)
+	}
+	replacement := strings.Join(replacements, "\n")
+
+	bs = copyrightRe.ReplaceAll(bs, []byte("id=\"copyright-notices\">\n"+replacement+"\n        </ul>"))
+	writeFile(htmlFile, string(bs))
+
+	return len(replacements)
+}
+
+func readAll(path string) []byte {
+	fd, err := os.Open(path)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer fd.Close()
+
+	bs, err := io.ReadAll(fd)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return bs
+}
+
+func writeFile(path string, data string) {
+	err := os.WriteFile(path, []byte(data), 0o644)
+	if err != nil {
+		log.Fatal(err)
+	}
+}
+
+func getModules() []string {
+	cmd := exec.Command("go", "mod", "graph")
+	output, err := cmd.Output()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	seen := make(map[string]struct{})
+	scanner := bufio.NewScanner(bytes.NewReader(output))
+
+	for scanner.Scan() {
+		line := scanner.Text()
+		fields := strings.Fields(line)
+		if len(fields) == 0 {
+			continue
+		}
+
+		if !strings.HasPrefix(fields[0], "github.com/syncthing/syncthing") {
+			continue
+		}
+
+		// Get left-hand side of dependency pair (before '@')
+		mod := strings.SplitN(fields[1], "@", 2)[0]
+
+		// Keep only first 3 path components
+		parts := strings.Split(mod, "/")
+		if len(parts) == 1 {
+			continue
+		}
+		short := strings.Join(parts[:min(len(parts), 3)], "/")
+
+		if strings.HasPrefix(short, "golang.org/x") ||
+			strings.HasPrefix(short, "github.com/prometheus") ||
+			short == "go" {
+
+			continue
+		}
+
+		seen[short] = struct{}{}
+	}
+
+	adds := make([]string, 0)
+	for k := range seen {
+		adds = append(adds, k)
+	}
+
+	slices.Sort(adds)
+
+	return adds
+}
+
+func parseCopyrightNotices(input string) []CopyrightNotice {
+	doc, err := html.Parse(strings.NewReader("<ul>" + input + "</ul>"))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var notices []CopyrightNotice
+
+	typ := TypeJS
+
+	var f func(*html.Node)
+	f = func(n *html.Node) {
+		if n.Type == html.ElementNode && n.Data == "li" {
+			var notice CopyrightNotice
+			var aFound bool
+
+			for c := n.FirstChild; c != nil; c = c.NextSibling {
+				if c.Type == html.ElementNode && c.Data == "a" {
+					aFound = true
+					for _, attr := range c.Attr {
+						if attr.Key == "href" {
+							notice.URL = attr.Val
+						}
+					}
+					if c.FirstChild != nil && c.FirstChild.Type == html.TextNode {
+						notice.Name = strings.TrimSpace(c.FirstChild.Data)
+					}
+				} else if c.Type == html.TextNode && aFound {
+					// Anything after <a> is considered the copyright
+					notice.Copyright = strings.TrimSpace(html.UnescapeString(c.Data))
+					notice.Copyright = strings.Trim(notice.Copyright, "., ")
+				}
+				if typ == TypeJS && strings.Contains(notice.URL, "AudriusButkevicius") {
+					typ = TypeKeep
+				}
+				notice.Type = typ
+				var buf strings.Builder
+				_ = html.Render(&buf, n)
+				notice.HTML = buf.String()
+			}
+
+			notice.Copyright = strings.ReplaceAll(notice.Copyright, "©", "&copy;")
+			notice.HTML = strings.ReplaceAll(notice.HTML, "©", "&copy;")
+			notices = append(notices, notice)
+		}
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			f(c)
+		}
+	}
+
+	f(doc)
+
+	return notices
+}
+
+func parseGitHubURL(u string) (string, string) {
+	parsed, err := url.Parse(u)
+	if err != nil {
+		log.Fatal(err)
+	}
+	parts := strings.Split(strings.Trim(parsed.Path, "/"), "/")
+	if len(parts) < 2 {
+		log.Fatal(fmt.Errorf("invalid GitHub URL: %q", parsed.Path))
+	}
+
+	return parts[0], parts[1]
+}
+
+func getLicenseText(owner, repo string) string {
+	url := fmt.Sprintf("https://api.github.com/repos/%s/%s/license", owner, repo)
+	req, _ := http.NewRequest("GET", url, nil)
+	req.Header.Set("Accept", "application/vnd.github.v3+json")
+
+	if token := os.Getenv("GITHUB_TOKEN"); token != "" {
+		req.Header.Set("Authorization", "Bearer "+token)
+	}
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer resp.Body.Close()
+
+	var result struct {
+		Content  string `json:"content"`
+		Encoding string `json:"encoding"`
+	}
+	body, _ := io.ReadAll(resp.Body)
+	err = json.Unmarshal(body, &result)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	if result.Encoding != "base64" {
+		log.Fatal(fmt.Sprintf("unexpected encoding: %s", result.Encoding))
+	}
+
+	decoded, err := base64.StdEncoding.DecodeString(result.Content)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	return string(decoded)
+}
+
+func extractCopyrights(license string, notice CopyrightNotice) []string {
+	lines := strings.Split(license, "\n")
+
+	re := regexp.MustCompile(`(?i)^\s*(copyright\s*(?:©|\(c\)|&copy;|19|20).*)$`)
+
+	copyrights := []string{}
+
+	for _, line := range lines {
+		if matches := re.FindStringSubmatch(strings.TrimSpace(line)); len(matches) == 2 {
+			copyright := strings.TrimSpace(matches[1])
+			re := regexp.MustCompile(`(?i)all rights reserved`)
+			copyright = re.ReplaceAllString(copyright, "")
+			copyright = strings.ReplaceAll(copyright, "©", "&copy;")
+			copyright = strings.ReplaceAll(copyright, "(C)", "&copy;")
+			copyright = strings.ReplaceAll(copyright, "(c)", "&copy;")
+			copyright = strings.Trim(copyright, "., ")
+			copyrights = append(copyrights, copyright)
+		}
+	}
+
+	if len(copyrights) > 0 {
+		return copyrights
+	}
+
+	return []string{}
+}
+
+func defaultCopyright(n CopyrightNotice) string {
+	year := time.Now().Format("2006")
+
+	return fmt.Sprintf("Copyright &copy; %v, the %s authors", year, n.Name)
+}
+
+func writeNotices(path string, notices []CopyrightNotice) {
+	s := ""
+	for i, n := range notices {
+		s += "#        : " + strconv.Itoa(i) + "\n" + n.String()
+	}
+	writeFile(path, s)
+}
+
+func (n CopyrightNotice) String() string {
+	return fmt.Sprintf("Type     : %v\nHTML     : %v\nName     : %v\nModule   : %v\nURL      : %v\nCopyright: %v\nRepoURL  : %v\nRepoCopys: %v\n\n",
+		n.Type, n.HTML, n.Name, n.Module, n.URL, n.Copyright, n.RepoURL, strings.Join(n.RepoCopyrights, ","))
+}
+
+func (t Type) String() string {
+	switch t {
+	case TypeJS:
+		return "TypeJS"
+	case TypeKeep:
+		return "TypeKeep"
+	case TypeToss:
+		return "TypeToss"
+	case TypeNew:
+		return "TypeNew"
+	default:
+		return "unknown"
+	}
+}