1 files changed, 65 insertions, 0 deletions
diff --git a/dom/permission/PermissionUtils.cpp b/dom/permission/PermissionUtils.cpp
new file mode 100644
index 0000000000..51deceee8b
--- /dev/null
+++ b/dom/permission/PermissionUtils.cpp
@@ -0,0 +1,65 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "PermissionUtils.h"
+#include "nsIPermissionManager.h"
+
+namespace mozilla::dom {
+
+static const nsLiteralCString kPermissionTypes[] = {
+    // clang-format off
+    "geo"_ns,
+    "desktop-notification"_ns,
+    // Alias `push` to `desktop-notification`.
+    "desktop-notification"_ns,
+    "persistent-storage"_ns,
+    // "midi" is the only public permission but internally we have both "midi"
+    // and "midi-sysex" (and yes, this is confusing).
+    "midi"_ns
+    // clang-format on
+};
+
+const size_t kPermissionNameCount = PermissionNameValues::Count;
+
+static_assert(MOZ_ARRAY_LENGTH(kPermissionTypes) == kPermissionNameCount,
+              "kPermissionTypes and PermissionName count should match");
+
+const nsLiteralCString& PermissionNameToType(PermissionName aName) {
+  MOZ_ASSERT((size_t)aName < ArrayLength(kPermissionTypes));
+  return kPermissionTypes[static_cast<size_t>(aName)];
+}
+
+Maybe<PermissionName> TypeToPermissionName(const nsACString& aType) {
+  // Annoyingly, "midi-sysex" is an internal permission. The public permission
+  // name is "midi" so we have to special-case it here...
+  if (aType.Equals("midi-sysex"_ns)) {
+    return Some(PermissionName::Midi);
+  }
+
+  for (size_t i = 0; i < ArrayLength(kPermissionTypes); ++i) {
+    if (kPermissionTypes[i].Equals(aType)) {
+      return Some(static_cast<PermissionName>(i));
+    }
+  }
+
+  return Nothing();
+}
+
+PermissionState ActionToPermissionState(uint32_t aAction) {
+  switch (aAction) {
+    case nsIPermissionManager::ALLOW_ACTION:
+      return PermissionState::Granted;
+
+    case nsIPermissionManager::DENY_ACTION:
+      return PermissionState::Denied;
+
+    default:
+    case nsIPermissionManager::PROMPT_ACTION:
+      return PermissionState::Prompt;
+  }
+}
+
+}  // namespace mozilla::dom