Reading API /api/v1/logs with a stable cursor, and API tokens

GET /api/v1/logs?query=<LogsQL>&since=<cursor|time|duration>&limit=<n>
returns the logs after a cursor, oldest first, with next_cursor and
has_more. The cursor is a position on _time (the reception time) plus
the number of rows already returned among those sharing that exact
time, ordered by a hash of their content, so following the cursors
gives every row once even within groups cut by a page. Rows count once
older than the lag (30 s), and nothing is returned while the disk
spool still holds logs.

API tokens (Settings > API) give read-only access to /api/v1/ as
"Authorization: Bearer lst_...", in every auth mode; only their SHA-256
is kept in /data/api_tokens.json. README (EN/FR) documents the route and
an n8n workflow keeping the cursor in $getWorkflowStaticData.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

main.go

@@ -142,6 +142,10 @@ func main() {
 	if err != nil {
 		log.Fatalf("tags: %v", err)
 	}
+	tokens, err := LoadTokenStore(filepath.Join(cfg.dataDir, "api_tokens.json"))
+	if err != nil {
+		log.Fatalf("api tokens: %v", err)
+	}
 
 	var spool *Spool
 	if cfg.spoolMax > 0 {
@@ -200,7 +204,7 @@ func main() {
 	}
 	mux := http.NewServeMux()
 	presets := getenv("PRESETS_FILE", filepath.Join(cfg.dataDir, "presets.json"))
-	api := &API{store: store, hub: hub, tags: tags, presets: presets, rdns: rdns, allowPurge: cfg.allowPurge, exportMax: cfg.exportMax, syslog: syslogSrv}
+	api := &API{store: store, hub: hub, tags: tags, presets: presets, rdns: rdns, allowPurge: cfg.allowPurge, exportMax: cfg.exportMax, syslog: syslogSrv, tokens: tokens}
 	if cfg.dockerLogs {
 		dm, err := NewDockerManager(cfg.dockerHost, cfg.dataDir, cfg.backfill, sink)
 		if err != nil {
@@ -228,7 +232,8 @@ func main() {
 	api.Routes(mux)
 	mux.Handle("GET /", http.FileServer(http.FS(static)))
 
-	handler, err := newAuth(cfg.auth, readOnly(mux))
+	app := readOnly(mux)
+	handler, err := newAuth(cfg.auth, app)
 	if err != nil {
 		log.Fatalf("auth: %v", err)
 	}
@@ -241,7 +246,8 @@ func main() {
 	if !authOn {
 		log.Printf("warning: no authentication (AUTH_USER is empty): anyone who can reach %s can read the logs and change the settings", cfg.httpAddr)
 	}
-	handler = secure(handler, contentSecurityPolicy(static), authOn)
+	// API tokens (Settings > API) are checked before the login, in every auth mode.
+	handler = secure(tokenAuth(tokens, handler, app), contentSecurityPolicy(static), authOn)
 	srv := &http.Server{
 		Addr:              cfg.httpAddr,
 		Handler:           handler,