snapshot of https://github.com/ory/keto.git (master, 2026-09-16; blobs > 131072B omitted)

oryx/corsx/middleware.go

@@ -0,0 +1,34 @@
+// Copyright © 2023 Ory Corp
+// SPDX-License-Identifier: Apache-2.0
+
+package corsx
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/rs/cors"
+	"github.com/urfave/negroni"
+)
+
+// ContextualizedMiddleware is a context-aware CORS middleware. It allows hot-reloading CORS configuration using
+// the HTTP request context.
+//
+//	n := negroni.New()
+//	n.UseFunc(ContextualizedMiddleware(func(context.Context) (opts cors.Options, enabled bool) {
+//	  panic("implement me")
+//	})
+//	// ...
+//
+// Deprecated: because this is not really practical to use, you should use CheckOrigin as the cors.Options.AllowOriginRequestFunc instead.
+func ContextualizedMiddleware(provider func(context.Context) (opts cors.Options, enabled bool)) negroni.HandlerFunc {
+	return func(rw http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
+		options, enabled := provider(r.Context())
+		if !enabled {
+			next(rw, r)
+			return
+		}
+
+		cors.New(options).Handler(next).ServeHTTP(rw, r)
+	}
+}