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/* -*- 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 "mozilla/dom/Permissions.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/dom/PermissionsBinding.h"
#include "mozilla/dom/PermissionStatus.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/Services.h"
#include "nsIPermissionManager.h"
#include "PermissionUtils.h"
namespace mozilla::dom {
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Permissions)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(Permissions)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Permissions)
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Permissions, mWindow)
Permissions::Permissions(nsPIDOMWindowInner* aWindow) : mWindow(aWindow) {}
Permissions::~Permissions() = default;
JSObject* Permissions::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return Permissions_Binding::Wrap(aCx, this, aGivenProto);
}
namespace {
already_AddRefed<PermissionStatus> CreatePermissionStatus(
JSContext* aCx, JS::Handle<JSObject*> aPermission,
nsPIDOMWindowInner* aWindow, ErrorResult& aRv) {
PermissionDescriptor permission;
JS::Rooted<JS::Value> value(aCx, JS::ObjectOrNullValue(aPermission));
if (NS_WARN_IF(!permission.Init(aCx, value))) {
aRv.NoteJSContextException(aCx);
return nullptr;
}
switch (permission.mName) {
case PermissionName::Geolocation:
case PermissionName::Notifications:
case PermissionName::Push:
case PermissionName::Persistent_storage:
return PermissionStatus::Create(aWindow, permission.mName, aRv);
default:
MOZ_ASSERT_UNREACHABLE("Unhandled type");
aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
return nullptr;
}
}
} // namespace
already_AddRefed<Promise> Permissions::Query(JSContext* aCx,
JS::Handle<JSObject*> aPermission,
ErrorResult& aRv) {
if (!mWindow) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
RefPtr<PermissionStatus> status =
CreatePermissionStatus(aCx, aPermission, mWindow, aRv);
if (NS_WARN_IF(aRv.Failed())) {
MOZ_ASSERT(!status);
return nullptr;
}
MOZ_ASSERT(status);
RefPtr<Promise> promise = Promise::Create(mWindow->AsGlobal(), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
promise->MaybeResolve(status);
return promise.forget();
}
/* static */
nsresult Permissions::RemovePermission(nsIPrincipal* aPrincipal,
const nsACString& aPermissionType) {
MOZ_ASSERT(XRE_IsParentProcess());
nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
if (NS_WARN_IF(!permMgr)) {
return NS_ERROR_FAILURE;
}
return permMgr->RemoveFromPrincipal(aPrincipal, aPermissionType);
}
already_AddRefed<Promise> Permissions::Revoke(JSContext* aCx,
JS::Handle<JSObject*> aPermission,
ErrorResult& aRv) {
if (!mWindow) {
aRv.Throw(NS_ERROR_UNEXPECTED);
return nullptr;
}
PermissionDescriptor permission;
JS::Rooted<JS::Value> value(aCx, JS::ObjectOrNullValue(aPermission));
if (NS_WARN_IF(!permission.Init(aCx, value))) {
aRv.NoteJSContextException(aCx);
return nullptr;
}
RefPtr<Promise> promise = Promise::Create(mWindow->AsGlobal(), aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
nsCOMPtr<Document> document = mWindow->GetExtantDoc();
if (!document) {
promise->MaybeReject(NS_ERROR_UNEXPECTED);
return promise.forget();
}
nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
if (NS_WARN_IF(!permMgr)) {
promise->MaybeReject(NS_ERROR_FAILURE);
return promise.forget();
}
const nsLiteralCString& permissionType =
PermissionNameToType(permission.mName);
nsresult rv;
if (XRE_IsParentProcess()) {
rv = RemovePermission(document->NodePrincipal(), permissionType);
} else {
// Permissions can't be removed from the content process. Send a message
// to the parent; `ContentParent::RecvRemovePermission` will call
// `RemovePermission`.
ContentChild::GetSingleton()->SendRemovePermission(
IPC::Principal(document->NodePrincipal()), permissionType, &rv);
}
if (NS_WARN_IF(NS_FAILED(rv))) {
promise->MaybeReject(rv);
return promise.forget();
}
RefPtr<PermissionStatus> status =
CreatePermissionStatus(aCx, aPermission, mWindow, aRv);
if (NS_WARN_IF(aRv.Failed())) {
MOZ_ASSERT(!status);
return nullptr;
}
MOZ_ASSERT(status);
promise->MaybeResolve(status);
return promise.forget();
}
} // namespace mozilla::dom
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