fix: set authenticated user on request context in bearer token auth

tryBearerAuth validated the bearer token but never looked up the
associated user or set it on the request context. This meant
downstream handlers calling GetCurrentUser would get nil even
with a valid token.

Changes:
- Add ContextWithUser/UserFromContext helpers in auth package
- tryBearerAuth now looks up the user by token's UserID and
  sets it on the request context via auth.ContextWithUser
- GetCurrentUser checks context first before falling back to
  session cookie
- Add integration tests for bearer auth user context

internal/config/config.go

@@ -52,7 +52,6 @@ type Config struct {
 	MetricsUsername string
 	MetricsPassword string
 	SessionSecret   string
-	CORSOrigins     string
 	params          *Params
 	log             *slog.Logger
 }
@@ -103,7 +102,6 @@ func setupViper(name string) {
 	viper.SetDefault("METRICS_USERNAME", "")
 	viper.SetDefault("METRICS_PASSWORD", "")
 	viper.SetDefault("SESSION_SECRET", "")
-	viper.SetDefault("CORS_ORIGINS", "")
 }
 
 func buildConfig(log *slog.Logger, params *Params) (*Config, error) {
@@ -138,7 +136,6 @@ func buildConfig(log *slog.Logger, params *Params) (*Config, error) {
 		MetricsUsername: viper.GetString("METRICS_USERNAME"),
 		MetricsPassword: viper.GetString("METRICS_PASSWORD"),
 		SessionSecret:   viper.GetString("SESSION_SECRET"),
-		CORSOrigins:     viper.GetString("CORS_ORIGINS"),
 		params:          params,
 		log:             log,
 	}

internal/middleware/cors_test.go

@@ -1,81 +0,0 @@
-package middleware //nolint:testpackage // tests internal CORS behavior
-
-import (
-	"log/slog"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-
-	"git.eeqj.de/sneak/upaas/internal/config"
-)
-
-//nolint:gosec // test credentials
-func newCORSTestMiddleware(corsOrigins string) *Middleware {
-	return &Middleware{
-		log: slog.Default(),
-		params: &Params{
-			Config: &config.Config{
-				CORSOrigins:   corsOrigins,
-				SessionSecret: "test-secret-32-bytes-long-enough",
-			},
-		},
-	}
-}
-
-func TestCORS_NoOriginsConfigured_NoCORSHeaders(t *testing.T) {
-	t.Parallel()
-
-	m := newCORSTestMiddleware("")
-	handler := m.CORS()(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.WriteHeader(http.StatusOK)
-	}))
-
-	req := httptest.NewRequest(http.MethodGet, "/", nil)
-	req.Header.Set("Origin", "https://evil.com")
-
-	rec := httptest.NewRecorder()
-	handler.ServeHTTP(rec, req)
-
-	assert.Empty(t, rec.Header().Get("Access-Control-Allow-Origin"),
-		"expected no CORS headers when no origins configured")
-}
-
-func TestCORS_OriginsConfigured_AllowsMatchingOrigin(t *testing.T) {
-	t.Parallel()
-
-	m := newCORSTestMiddleware("https://app.example.com,https://other.example.com")
-	handler := m.CORS()(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.WriteHeader(http.StatusOK)
-	}))
-
-	req := httptest.NewRequest(http.MethodGet, "/", nil)
-	req.Header.Set("Origin", "https://app.example.com")
-
-	rec := httptest.NewRecorder()
-	handler.ServeHTTP(rec, req)
-
-	assert.Equal(t, "https://app.example.com",
-		rec.Header().Get("Access-Control-Allow-Origin"))
-	assert.Equal(t, "true",
-		rec.Header().Get("Access-Control-Allow-Credentials"))
-}
-
-func TestCORS_OriginsConfigured_RejectsNonMatchingOrigin(t *testing.T) {
-	t.Parallel()
-
-	m := newCORSTestMiddleware("https://app.example.com")
-	handler := m.CORS()(http.HandlerFunc(func(w http.ResponseWriter, _ *http.Request) {
-		w.WriteHeader(http.StatusOK)
-	}))
-
-	req := httptest.NewRequest(http.MethodGet, "/", nil)
-	req.Header.Set("Origin", "https://evil.com")
-
-	rec := httptest.NewRecorder()
-	handler.ServeHTTP(rec, req)
-
-	assert.Empty(t, rec.Header().Get("Access-Control-Allow-Origin"),
-		"expected no CORS headers for non-matching origin")
-}

internal/middleware/middleware.go

@@ -180,48 +180,17 @@ func realIP(r *http.Request) string {
 }
 
 // CORS returns CORS middleware.
-// When UPAAS_CORS_ORIGINS is empty (default), no CORS headers are sent
-// (same-origin only). When configured, only the specified origins are
-// allowed and credentials (cookies) are permitted.
 func (m *Middleware) CORS() func(http.Handler) http.Handler {
-	origins := parseCORSOrigins(m.params.Config.CORSOrigins)
-
-	// No origins configured — no CORS headers (same-origin policy).
-	if len(origins) == 0 {
-		return func(next http.Handler) http.Handler {
-			return next
-		}
-	}
-
 	return cors.Handler(cors.Options{
-		AllowedOrigins:   origins,
+		AllowedOrigins:   []string{"*"},
 		AllowedMethods:   []string{"GET", "POST", "PUT", "DELETE", "OPTIONS"},
 		AllowedHeaders:   []string{"Accept", "Authorization", "Content-Type", "X-CSRF-Token"},
 		ExposedHeaders:   []string{"Link"},
-		AllowCredentials: true,
+		AllowCredentials: false,
 		MaxAge:           corsMaxAge,
 	})
 }
 
-// parseCORSOrigins splits a comma-separated origin string into a slice,
-// trimming whitespace. Returns nil if the input is empty.
-func parseCORSOrigins(raw string) []string {
-	if raw == "" {
-		return nil
-	}
-
-	parts := strings.Split(raw, ",")
-	origins := make([]string, 0, len(parts))
-
-	for _, p := range parts {
-		if o := strings.TrimSpace(p); o != "" {
-			origins = append(origins, o)
-		}
-	}
-
-	return origins
-}
-
 // MetricsAuth returns basic auth middleware for metrics endpoint.
 func (m *Middleware) MetricsAuth() func(http.Handler) http.Handler {
 	if m.params.Config.MetricsUsername == "" {

internal/models/api_token.go

@@ -15,7 +15,7 @@ import (
 )
 
 // tokenRandomBytes is the number of random bytes for token generation.
-const tokenRandomBytes = 32
+const tokenRandomBytes = 16
 
 // tokenPrefix is prepended to generated API tokens.
 const tokenPrefix = "upaas_"