gecko-dev/dom/filesystem/FileSystemPermissionRequest...

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* 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 "FileSystemPermissionRequest.h"
#include "mozilla/dom/FileSystemBase.h"
#include "mozilla/dom/FileSystemTaskBase.h"
#include "mozilla/dom/FileSystemUtils.h"
#include "mozilla/dom/TabChild.h"
#include "nsIDocument.h"
#include "nsPIDOMWindow.h"
#include "nsString.h"
namespace mozilla {
namespace dom {
NS_IMPL_ISUPPORTS(FileSystemPermissionRequest, nsIRunnable, nsIContentPermissionRequest)
// static
void
FileSystemPermissionRequest::RequestForTask(FileSystemTaskBase* aTask)
{
MOZ_ASSERT(aTask, "aTask should not be null!");
MOZ_ASSERT(NS_IsMainThread());
nsRefPtr<FileSystemPermissionRequest> request =
new FileSystemPermissionRequest(aTask);
NS_DispatchToCurrentThread(request);
}
FileSystemPermissionRequest::FileSystemPermissionRequest(
FileSystemTaskBase* aTask)
: mTask(aTask)
{
MOZ_ASSERT(mTask, "aTask should not be null!");
MOZ_ASSERT(NS_IsMainThread());
mTask->GetPermissionAccessType(mPermissionAccess);
nsRefPtr<FileSystemBase> filesystem = mTask->GetFileSystem();
if (!filesystem) {
return;
}
mPermissionType = filesystem->GetPermission();
mWindow = filesystem->GetWindow();
if (!mWindow) {
return;
}
nsCOMPtr<nsIDocument> doc = mWindow->GetDoc();
if (!doc) {
return;
}
mPrincipal = doc->NodePrincipal();
}
FileSystemPermissionRequest::~FileSystemPermissionRequest()
{
}
bool
FileSystemPermissionRequest::Recv__delete__(const bool& aAllow,
const InfallibleTArray<PermissionChoice>& aChoices)
{
MOZ_ASSERT(aChoices.IsEmpty(),
"FileSystemPermissionRequest doesn't support permission choice");
if (aAllow) {
Allow(JS::UndefinedHandleValue);
} else {
Cancel();
}
return true;
}
void
FileSystemPermissionRequest::IPDLRelease()
{
Release();
}
NS_IMETHODIMP
FileSystemPermissionRequest::GetTypes(nsIArray** aTypes)
{
nsTArray<nsString> emptyOptions;
return CreatePermissionArray(mPermissionType,
mPermissionAccess,
emptyOptions,
aTypes);
}
NS_IMETHODIMP
FileSystemPermissionRequest::GetPrincipal(nsIPrincipal** aRequestingPrincipal)
{
NS_IF_ADDREF(*aRequestingPrincipal = mPrincipal);
return NS_OK;
}
NS_IMETHODIMP
FileSystemPermissionRequest::GetWindow(nsIDOMWindow** aRequestingWindow)
{
NS_IF_ADDREF(*aRequestingWindow = mWindow);
return NS_OK;
}
NS_IMETHODIMP
FileSystemPermissionRequest::GetElement(nsIDOMElement** aRequestingElement)
{
*aRequestingElement = nullptr;
return NS_OK;
}
NS_IMETHODIMP
FileSystemPermissionRequest::Cancel()
{
MOZ_ASSERT(NS_IsMainThread());
mTask->SetError(NS_ERROR_DOM_SECURITY_ERR);
mTask->Start();
return NS_OK;
}
NS_IMETHODIMP
FileSystemPermissionRequest::Allow(JS::HandleValue aChoices)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aChoices.isUndefined());
mTask->Start();
return NS_OK;
}
NS_IMETHODIMP
FileSystemPermissionRequest::Run()
{
MOZ_ASSERT(NS_IsMainThread());
nsRefPtr<FileSystemBase> filesystem = mTask->GetFileSystem();
if (!filesystem) {
Cancel();
return NS_OK;
}
if (filesystem->IsTesting()) {
Allow(JS::UndefinedHandleValue);
return NS_OK;
}
if (FileSystemUtils::IsParentProcess()) {
nsCOMPtr<nsIContentPermissionPrompt> prompt
= do_CreateInstance(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
if (!prompt || NS_FAILED(prompt->Prompt(this))) {
Cancel();
}
return NS_OK;
}
if (!mWindow) {
Cancel();
return NS_OK;
}
// because owner implements nsITabChild, we can assume that it is
// the one and only TabChild.
TabChild* child = TabChild::GetFrom(mWindow->GetDocShell());
if (!child) {
Cancel();
return NS_OK;
}
// Retain a reference so the object isn't deleted without IPDL's
// knowledge. Corresponding release occurs in
// DeallocPContentPermissionRequest.
AddRef();
nsTArray<PermissionRequest> permArray;
nsTArray<nsString> emptyOptions;
permArray.AppendElement(PermissionRequest(mPermissionType,
mPermissionAccess,
emptyOptions));
child->SendPContentPermissionRequestConstructor(
this, permArray, IPC::Principal(mPrincipal));
Sendprompt();
return NS_OK;
}
} /* namespace dom */
} /* namespace mozilla */