refactor ocs

Signed-off-by: Christian Richter <crichter@owncloud.com>

extensions/ocs/pkg/middleware/requireuser.go

@@ -0,0 +1,39 @@
+package middleware
+
+import (
+	"net/http"
+
+	revactx "github.com/cs3org/reva/v2/pkg/ctx"
+	"github.com/go-chi/render"
+	"github.com/owncloud/ocis/extensions/ocs/pkg/service/v0/data"
+	"github.com/owncloud/ocis/extensions/ocs/pkg/service/v0/response"
+)
+
+// RequireUser middleware is used to require a user in context
+func RequireUser(opts ...Option) func(next http.Handler) http.Handler {
+	opt := newOptions(opts...)
+
+	mustRender := func(w http.ResponseWriter, r *http.Request, renderer render.Renderer) {
+		if err := render.Render(w, r, renderer); err != nil {
+			opt.Logger.Err(err).Msgf("failed to write response for ocs request %s on %s", r.Method, r.URL)
+		}
+	}
+
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+
+			u, ok := revactx.ContextGetUser(r.Context())
+			if !ok {
+				mustRender(w, r, response.ErrRender(data.MetaUnauthorized.StatusCode, "Unauthorized"))
+				return
+			}
+			if u.Id == nil || u.Id.OpaqueId == "" {
+				mustRender(w, r, response.ErrRender(data.MetaBadRequest.StatusCode, "user is missing an id"))
+				return
+			}
+
+			next.ServeHTTP(w, r)
+
+		})
+	}
+}