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/****************************************************************************
**
** Copyright (C) 2022 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtWebEngine module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "file_system_access_permission_request_manager_qt.h"
#include "components/permissions/permission_util.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/navigation_handle.h"
#include "api/qwebenginefilesystemaccessrequest.h"
#include "file_system_access_permission_context_factory_qt.h"
#include "file_system_access_permission_request_controller_impl.h"
#include "web_contents_adapter_client.h"
#include "web_contents_view_qt.h"
namespace QtWebEngineCore {
bool RequestsAreIdentical(const FileSystemAccessPermissionRequestManagerQt::RequestData &a,
const FileSystemAccessPermissionRequestManagerQt::RequestData &b)
{
return a.origin == b.origin && a.path == b.path && a.handle_type == b.handle_type
&& a.access == b.access;
}
bool RequestsAreForSamePath(const FileSystemAccessPermissionRequestManagerQt::RequestData &a,
const FileSystemAccessPermissionRequestManagerQt::RequestData &b)
{
return a.origin == b.origin && a.path == b.path && a.handle_type == b.handle_type;
}
struct FileSystemAccessPermissionRequestManagerQt::Request
{
Request(RequestData data,
base::OnceCallback<void(permissions::PermissionAction result)> callback,
base::ScopedClosureRunner fullscreen_block)
: data(std::move(data))
{
callbacks.push_back(std::move(callback));
fullscreen_blocks.push_back(std::move(fullscreen_block));
}
RequestData data;
std::vector<base::OnceCallback<void(permissions::PermissionAction result)>> callbacks;
std::vector<base::ScopedClosureRunner> fullscreen_blocks;
};
FileSystemAccessPermissionRequestManagerQt::~FileSystemAccessPermissionRequestManagerQt() = default;
void FileSystemAccessPermissionRequestManagerQt::AddRequest(
RequestData data, base::OnceCallback<void(permissions::PermissionAction result)> callback,
base::ScopedClosureRunner fullscreen_block)
{
// Check if any pending requests are identical to the new request.
if (m_currentRequest && RequestsAreIdentical(m_currentRequest->data, data)) {
m_currentRequest->callbacks.push_back(std::move(callback));
m_currentRequest->fullscreen_blocks.push_back(std::move(fullscreen_block));
return;
}
for (const auto &request : m_queuedRequests) {
if (RequestsAreIdentical(request->data, data)) {
request->callbacks.push_back(std::move(callback));
request->fullscreen_blocks.push_back(std::move(fullscreen_block));
return;
}
if (RequestsAreForSamePath(request->data, data)) {
// This means access levels are different. Change the existing request
// to kReadWrite, and add the new callback.
request->data.access = Access::kReadWrite;
request->callbacks.push_back(std::move(callback));
request->fullscreen_blocks.push_back(std::move(fullscreen_block));
return;
}
}
m_queuedRequests.push_back(std::make_unique<Request>(std::move(data), std::move(callback),
std::move(fullscreen_block)));
if (!IsShowingRequest())
ScheduleShowRequest();
}
FileSystemAccessPermissionRequestManagerQt::FileSystemAccessPermissionRequestManagerQt(
content::WebContents *web_contents)
: content::WebContentsObserver(web_contents)
{
}
bool FileSystemAccessPermissionRequestManagerQt::CanShowRequest() const
{
// Delay showing requests until the main frame is fully loaded.
// ScheduleShowRequest() will be called again when that happens.
return web_contents()->IsDocumentOnLoadCompletedInMainFrame() && !m_queuedRequests.empty()
&& !m_currentRequest;
}
void FileSystemAccessPermissionRequestManagerQt::ScheduleShowRequest()
{
if (!CanShowRequest())
return;
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&FileSystemAccessPermissionRequestManagerQt::DequeueAndShowRequest,
m_weakFactory.GetWeakPtr()));
}
void FileSystemAccessPermissionRequestManagerQt::DequeueAndShowRequest()
{
if (!CanShowRequest())
return;
m_currentRequest = std::move(m_queuedRequests.front());
m_queuedRequests.pop_front();
WebContentsAdapterClient *client =
WebContentsViewQt::from(
static_cast<content::WebContentsImpl *>(web_contents())->GetView())
->client();
if (!client) {
LOG(ERROR)
<< "Attempt to request file system access from content missing WebContents client";
for (auto &callback : m_currentRequest->callbacks)
std::move(callback).Run(permissions::PermissionAction::DENIED);
return;
}
QWebEngineFileSystemAccessRequest request(
QSharedPointer<FileSystemAccessPermissionRequestControllerImpl>::create(
m_currentRequest->data,
base::BindOnce(
&FileSystemAccessPermissionRequestManagerQt::OnPermissionDialogResult,
m_weakFactory.GetWeakPtr())));
client->runFileSystemAccessRequest(std::move(request));
}
void FileSystemAccessPermissionRequestManagerQt::DocumentOnLoadCompletedInMainFrame(
content::RenderFrameHost *)
{
// This is scheduled because while all calls to the browser have been
// issued at DOMContentLoaded, they may be bouncing around in scheduled
// callbacks finding the UI thread still. This makes sure we allow those
// scheduled calls to AddRequest to complete before we show the page-load
// permissions bubble.
if (!m_queuedRequests.empty())
ScheduleShowRequest();
}
void FileSystemAccessPermissionRequestManagerQt::DidFinishNavigation(
content::NavigationHandle *navigation)
{
// We only care about top-level navigations that actually committed.
if (!navigation->IsInMainFrame() || !navigation->HasCommitted())
return;
auto src_origin = url::Origin::Create(navigation->GetPreviousMainFrameURL());
auto dest_origin = url::Origin::Create(navigation->GetURL());
if (src_origin == dest_origin)
return;
// Navigated away from |src_origin|, tell permission context to check if
// permissions need to be revoked.
auto *context = FileSystemAccessPermissionContextFactoryQt::GetForProfileIfExists(
web_contents()->GetBrowserContext());
if (context)
context->NavigatedAwayFromOrigin(src_origin);
}
void FileSystemAccessPermissionRequestManagerQt::WebContentsDestroyed()
{
auto src_origin = web_contents()->GetMainFrame()->GetLastCommittedOrigin();
// Navigated away from |src_origin|, tell permission context to check if
// permissions need to be revoked.
auto *context = FileSystemAccessPermissionContextFactoryQt::GetForProfileIfExists(
web_contents()->GetBrowserContext());
if (context)
context->NavigatedAwayFromOrigin(src_origin);
}
void FileSystemAccessPermissionRequestManagerQt::OnPermissionDialogResult(
permissions::PermissionAction result)
{
DCHECK(m_currentRequest);
for (auto &callback : m_currentRequest->callbacks)
std::move(callback).Run(result);
m_currentRequest = nullptr;
if (!m_queuedRequests.empty())
ScheduleShowRequest();
}
WEB_CONTENTS_USER_DATA_KEY_IMPL(FileSystemAccessPermissionRequestManagerQt);
} // namespace QtWebEngineCore
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