feat: filebrowser with encfs

http/utils.go

@@ -0,0 +1,68 @@
+package http
+
+import (
+	"encoding/json"
+	"errors"
+	"net/http"
+	"net/url"
+	"os"
+	"strings"
+
+	libErrors "github.com/filebrowser/filebrowser/v2/errors"
+)
+
+func renderJSON(w http.ResponseWriter, _ *http.Request, data interface{}) (int, error) {
+	marsh, err := json.Marshal(data)
+
+	if err != nil {
+		return http.StatusInternalServerError, err
+	}
+
+	w.Header().Set("Content-Type", "application/json; charset=utf-8")
+	if _, err := w.Write(marsh); err != nil {
+		return http.StatusInternalServerError, err
+	}
+
+	return 0, nil
+}
+
+func errToStatus(err error) int {
+	switch {
+	case err == nil:
+		return http.StatusOK
+	case os.IsPermission(err):
+		return http.StatusForbidden
+	case os.IsNotExist(err), errors.Is(err, libErrors.ErrNotExist):
+		return http.StatusNotFound
+	case os.IsExist(err), errors.Is(err, libErrors.ErrExist):
+		return http.StatusConflict
+	case errors.Is(err, libErrors.ErrPermissionDenied):
+		return http.StatusForbidden
+	case errors.Is(err, libErrors.ErrInvalidRequestParams):
+		return http.StatusBadRequest
+	case errors.Is(err, libErrors.ErrRootUserDeletion):
+		return http.StatusForbidden
+	default:
+		return http.StatusInternalServerError
+	}
+}
+
+// This is an addaptation if http.StripPrefix in which we don't
+// return 404 if the page doesn't have the needed prefix.
+func stripPrefix(prefix string, h http.Handler) http.Handler {
+	if prefix == "" || prefix == "/" {
+		return h
+	}
+
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		p := strings.TrimPrefix(r.URL.Path, prefix)
+		rp := strings.TrimPrefix(r.URL.RawPath, prefix)
+		r2 := new(http.Request)
+		*r2 = *r
+		r2.URL = new(url.URL)
+		*r2.URL = *r.URL
+		r2.URL.Path = p
+		r2.URL.RawPath = rp
+		h.ServeHTTP(w, r2)
+	})
+}