Initial QSfera import

Server/pkg/middleware/header.go

@@ -0,0 +1,41 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/qsfera/server/pkg/cors"
+
+	rscors "github.com/rs/cors"
+)
+
+// NoCache writes required cache headers to all requests.
+func NoCache(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Cache-Control", "no-cache, no-store, max-age=0, must-revalidate, value")
+		w.Header().Set("Expires", "Thu, 01 Jan 1970 00:00:00 GMT")
+		w.Header().Set("Last-Modified", time.Now().UTC().Format(http.TimeFormat))
+
+		next.ServeHTTP(w, r)
+	})
+}
+
+// Cors writes required cors headers to all requests.
+func Cors(opts ...cors.Option) func(http.Handler) http.Handler {
+	options := cors.NewOptions(opts...)
+	logger := options.Logger
+	logger.Debug().
+		Str("allowed_origins", strings.Join(options.AllowedOrigins, ", ")).
+		Str("allowed_methods", strings.Join(options.AllowedMethods, ", ")).
+		Str("allowed_headers", strings.Join(options.AllowedHeaders, ", ")).
+		Bool("allow_credentials", options.AllowCredentials).
+		Msg("setup cors middleware")
+	c := rscors.New(rscors.Options{
+		AllowedOrigins:   options.AllowedOrigins,
+		AllowedMethods:   options.AllowedMethods,
+		AllowedHeaders:   options.AllowedHeaders,
+		AllowCredentials: options.AllowCredentials,
+	})
+	return c.Handler
+}