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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/system/system_info_ui.h"
#include <memory>
#include <utility>
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/ref_counted_memory.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/escape.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "base/time/time.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/feedback/system_logs/about_system_logs_fetcher.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/url_constants.h"
#include "chrome/grit/about_sys_resources.h"
#include "chrome/grit/about_sys_resources_map.h"
#include "chrome/grit/generated_resources.h"
#include "chrome/grit/key_value_pair_viewer_shared_resources.h"
#include "chrome/grit/key_value_pair_viewer_shared_resources_map.h"
#include "components/feedback/system_logs/system_logs_fetcher.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_data_source.h"
#include "content/public/browser/web_ui_message_handler.h"
#include "net/base/directory_lister.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/webui/jstemplate_builder.h"
#include "ui/base/webui/web_ui_util.h"
#include "ui/webui/webui_util.h"
using content::WebContents;
using content::WebUIMessageHandler;
using system_logs::SystemLogsResponse;
namespace {
void CreateAndAddSystemInfoUIDataSource(Profile* profile) {
content::WebUIDataSource* html_source =
content::WebUIDataSource::CreateAndAdd(profile,
chrome::kChromeUISystemInfoHost);
static constexpr webui::LocalizedString kStrings[] = {
{"title", IDS_ABOUT_SYS_TITLE},
{"description", IDS_ABOUT_SYS_DESC},
{"tableTitle", IDS_ABOUT_SYS_TABLE_TITLE},
{"logFileTableTitle", IDS_ABOUT_SYS_LOG_FILE_TABLE_TITLE},
{"expandAllBtn", IDS_ABOUT_SYS_EXPAND_ALL},
{"collapseAllBtn", IDS_ABOUT_SYS_COLLAPSE_ALL},
{"expandBtn", IDS_ABOUT_SYS_EXPAND},
{"collapseBtn", IDS_ABOUT_SYS_COLLAPSE},
{"parseError", IDS_ABOUT_SYS_PARSE_ERROR},
};
html_source->AddLocalizedStrings(kStrings);
webui::SetupWebUIDataSource(html_source, kAboutSysResources,
IDR_ABOUT_SYS_ABOUT_SYS_HTML);
html_source->AddResourcePaths(kKeyValuePairViewerSharedResources);
}
} // namespace
// The handler for Javascript messages related to the "system" view.
class SystemInfoUIHandler : public WebUIMessageHandler {
public:
SystemInfoUIHandler();
SystemInfoUIHandler(const SystemInfoUIHandler&) = delete;
SystemInfoUIHandler& operator=(const SystemInfoUIHandler&) = delete;
~SystemInfoUIHandler() override;
// WebUIMessageHandler implementation.
void RegisterMessages() override;
void OnJavascriptDisallowed() override;
// Callbacks for SystemInfo request messages. This asynchronously requests
// system info and eventually returns it to the front end.
void HandleRequestSystemInfo(const base::Value::List& args);
void OnSystemInfo(std::unique_ptr<SystemLogsResponse> sys_info);
private:
std::string callback_id_;
base::WeakPtrFactory<SystemInfoUIHandler> weak_ptr_factory_{this};
};
////////////////////////////////////////////////////////////////////////////////
//
// SystemInfoUIHandler
//
////////////////////////////////////////////////////////////////////////////////
SystemInfoUIHandler::SystemInfoUIHandler() = default;
SystemInfoUIHandler::~SystemInfoUIHandler() = default;
void SystemInfoUIHandler::OnJavascriptDisallowed() {
weak_ptr_factory_.InvalidateWeakPtrs();
callback_id_.clear();
}
void SystemInfoUIHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"requestSystemInfo",
base::BindRepeating(&SystemInfoUIHandler::HandleRequestSystemInfo,
base::Unretained(this)));
}
void SystemInfoUIHandler::HandleRequestSystemInfo(
const base::Value::List& args) {
AllowJavascript();
callback_id_ = args[0].GetString();
system_logs::SystemLogsFetcher* fetcher =
system_logs::BuildAboutSystemLogsFetcher(web_ui());
fetcher->Fetch(base::BindOnce(&SystemInfoUIHandler::OnSystemInfo,
weak_ptr_factory_.GetWeakPtr()));
}
void SystemInfoUIHandler::OnSystemInfo(
std::unique_ptr<SystemLogsResponse> sys_info) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (!sys_info) {
return;
}
base::Value::List data;
for (SystemLogsResponse::const_iterator it = sys_info->begin();
it != sys_info->end(); ++it) {
base::Value::Dict val;
val.Set("statName", it->first);
val.Set("statValue", it->second);
data.Append(std::move(val));
}
ResolveJavascriptCallback(base::Value(callback_id_), data);
callback_id_.clear();
}
////////////////////////////////////////////////////////////////////////////////
//
// SystemInfoUI
//
////////////////////////////////////////////////////////////////////////////////
SystemInfoUI::SystemInfoUI(content::WebUI* web_ui) : WebUIController(web_ui) {
web_ui->AddMessageHandler(std::make_unique<SystemInfoUIHandler>());
// Set up the chrome://system/ source.
CreateAndAddSystemInfoUIDataSource(Profile::FromWebUI(web_ui));
}
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