dom/permission/PermissionUtils.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "PermissionUtils.h"
   8 #include "nsIPermissionManager.h"
   9
  10 namespace mozilla::dom {
  11
  12 static const nsLiteralCString kPermissionTypes[] = {
  13     // clang-format off
  14     "geo"_ns,
  15     "desktop-notification"_ns,
  16     // Alias `push` to `desktop-notification`.
  17     "desktop-notification"_ns,
  18     "persistent-storage"_ns,
  19     // "midi" is the only public permission but internally we have both "midi"
  20     // and "midi-sysex" (and yes, this is confusing).
  21     "midi"_ns,
  22     "storage-access"_ns
  23     // clang-format on
  24 };
  25
  26 const size_t kPermissionNameCount = PermissionNameValues::Count;
  27
  28 static_assert(MOZ_ARRAY_LENGTH(kPermissionTypes) == kPermissionNameCount,
  29               "kPermissionTypes and PermissionName count should match");
  30
  31 const nsLiteralCString& PermissionNameToType(PermissionName aName) {
  32   MOZ_ASSERT((size_t)aName < ArrayLength(kPermissionTypes));
  33   return kPermissionTypes[static_cast<size_t>(aName)];
  34 }
  35
  36 Maybe<PermissionName> TypeToPermissionName(const nsACString& aType) {
  37   // Annoyingly, "midi-sysex" is an internal permission. The public permission
  38   // name is "midi" so we have to special-case it here...
  39   if (aType.Equals("midi-sysex"_ns)) {
  40     return Some(PermissionName::Midi);
  41   }
  42
  43   // "storage-access" permissions are also annoying and require a special case.
  44   if (StringBeginsWith(aType, "3rdPartyStorage^"_ns) ||
  45       StringBeginsWith(aType, "3rdPartyFrameStorage^"_ns)) {
  46     return Some(PermissionName::Storage_access);
  47   }
  48
  49   for (size_t i = 0; i < ArrayLength(kPermissionTypes); ++i) {
  50     if (kPermissionTypes[i].Equals(aType)) {
  51       return Some(static_cast<PermissionName>(i));
  52     }
  53   }
  54
  55   return Nothing();
  56 }
  57
  58 PermissionState ActionToPermissionState(uint32_t aAction) {
  59   switch (aAction) {
  60     case nsIPermissionManager::ALLOW_ACTION:
  61       return PermissionState::Granted;
  62
  63     case nsIPermissionManager::DENY_ACTION:
  64       return PermissionState::Denied;
  65
  66     default:
  67     case nsIPermissionManager::PROMPT_ACTION:
  68       return PermissionState::Prompt;
  69   }
  70 }
  71
  72 }  // namespace mozilla::dom