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/****************************************************************************
**
** Copyright (C) 2021 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
// based on //chrome/browser/extensions/api/tabs/tabs_api.cc
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "qtwebengine/browser/extensions/api/tabs/tabs_api.h"
#include "qtwebengine/common/extensions/api/tabs.h"
#include "base/metrics/histogram_macros.h"
#include "chrome/common/url_constants.h"
#include "components/guest_view/browser/guest_view_base.h"
#include "components/url_formatter/url_fixer.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/web_contents.h"
#include "content/public/common/url_constants.h"
#include "extensions/common/error_utils.h"
#include "extensions/common/permissions/permissions_data.h"
using content::NavigationController;
using content::OpenURLParams;
using content::WebContents;
namespace extensions {
namespace tabs = api::tabs;
static GURL ResolvePossiblyRelativeURL(const std::string& url_string,
const Extension* extension) {
GURL url = GURL(url_string);
if (!url.is_valid() && extension)
url = extension->GetResourceURL(url_string);
return url;
}
static bool IsKillURL(const GURL& url) {
#if DCHECK_IS_ON()
// Caller should ensure that |url| is already "fixed up" by
// url_formatter::FixupURL, which (among many other things) takes care
// of rewriting about:kill into chrome://kill/.
if (url.SchemeIs(url::kAboutScheme))
DCHECK(url.IsAboutBlank() || url.IsAboutSrcdoc());
#endif
static const char* const kill_hosts[] = {
chrome::kChromeUICrashHost, chrome::kChromeUIDelayedHangUIHost,
chrome::kChromeUIHangUIHost, chrome::kChromeUIKillHost,
chrome::kChromeUIQuitHost, chrome::kChromeUIRestartHost,
content::kChromeUIBrowserCrashHost, content::kChromeUIMemoryExhaustHost,
};
if (!url.SchemeIs(content::kChromeUIScheme))
return false;
return base::Contains(kill_hosts, url.host_piece());
}
static bool PrepareURLForNavigation(const std::string& url_string,
const Extension* extension,
GURL* return_url,
std::string* error) {
GURL url = ResolvePossiblyRelativeURL(url_string, extension);
// Ideally, the URL would only be "fixed" for user input (e.g. for URLs
// entered into the Omnibox), but some extensions rely on the legacy behavior
// where all navigations were subject to the "fixing". See also
// https://crbug.com/1145381.
url = url_formatter::FixupURL(url.spec(), "" /* = desired_tld */);
// Reject invalid URLs.
if (!url.is_valid()) {
*error = ErrorUtils::FormatErrorMessage("Invalid url: \"*\".", url_string);
return false;
}
// Don't let the extension crash the browser or renderers.
if (IsKillURL(url)) {
*error = "I'm sorry. I'm afraid I can't do that.";
return false;
}
if (url.SchemeIs(content::kChromeDevToolsScheme)) {
*error = "Cannot navigate to a devtools:// page without either the devtools or "
"debugger permission.";
return false;
}
return_url->Swap(&url);
return true;
}
TabsUpdateFunction::TabsUpdateFunction() : web_contents_(nullptr) {}
ExtensionFunction::ResponseAction TabsUpdateFunction::Run() {
std::unique_ptr<tabs::Update::Params> params(
tabs::Update::Params::Create(*args_));
EXTENSION_FUNCTION_VALIDATE(params.get());
int tab_id = -1;
std::string error;
web_contents_ = GetSenderWebContents();
if (!web_contents_) {
return RespondNow(Error("The specified target is not found."));
} else {
web_contents_ = guest_view::GuestViewBase::GetTopLevelWebContents(web_contents_);
}
// Navigate the tab to a new location if the url is different.
if (params->update_properties.url.get()) {
std::string updated_url = *params->update_properties.url;
if (!UpdateURL(updated_url, tab_id, &error))
return RespondNow(Error(std::move(error)));
}
return RespondNow(GetResult());
}
bool TabsUpdateFunction::UpdateURL(const std::string& url_string,
int tab_id,
std::string* error) {
GURL url;
if (!PrepareURLForNavigation(url_string, extension(), &url,
error)) {
return false;
}
const bool is_javascript_scheme = url.SchemeIs(url::kJavaScriptScheme);
UMA_HISTOGRAM_BOOLEAN("Extensions.ApiTabUpdateJavascript",
is_javascript_scheme);
// JavaScript URLs are forbidden in chrome.tabs.update().
if (is_javascript_scheme) {
*error = "JavaScript URLs are not allowed in chrome.tabs.update. Use "
"chrome.tabs.executeScript instead.";
return false;
}
NavigationController::LoadURLParams load_params(url);
// Treat extension-initiated navigations as renderer-initiated so that the URL
// does not show in the omnibox until it commits. This avoids URL spoofs
// since URLs can be opened on behalf of untrusted content.
load_params.is_renderer_initiated = true;
// All renderer-initiated navigations need to have an initiator origin.
load_params.initiator_origin = extension()->origin();
// |source_site_instance| needs to be set so that a renderer process
// compatible with |initiator_origin| is picked by Site Isolation.
load_params.source_site_instance = content::SiteInstance::CreateForURL(
web_contents_->GetBrowserContext(),
load_params.initiator_origin->GetURL());
// Marking the navigation as initiated via an API means that the focus
// will stay in the omnibox - see https://crbug.com/1085779.
load_params.transition_type = ui::PAGE_TRANSITION_FROM_API;
web_contents_->GetController().LoadURLWithParams(load_params);
DCHECK_EQ(url,
web_contents_->GetController().GetPendingEntry()->GetVirtualURL());
return true;
}
ExtensionFunction::ResponseValue TabsUpdateFunction::GetResult() {
return NoArguments();
}
void TabsUpdateFunction::OnExecuteCodeFinished(
const std::string& error,
const GURL& url,
const base::ListValue& script_result) {
if (!error.empty()) {
Respond(Error(error));
return;
}
return Respond(GetResult());
}
} // namespace extensions
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