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content / public / browser / webui_config_map.cc [blame]
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/browser/webui_config_map.h"
#include <utility>
#include "base/containers/contains.h"
#include "base/memory/raw_ref.h"
#include "base/no_destructor.h"
#include "base/strings/strcat.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_controller.h"
#include "content/public/browser/web_ui_controller_factory.h"
#include "content/public/browser/webui_config.h"
#include "content/public/common/url_constants.h"
#include "url/gurl.h"
namespace content {
namespace {
// Owned by WebUIConfigMap. Used to hook up with the existing WebUI infra.
class WebUIConfigMapWebUIControllerFactory : public WebUIControllerFactory {
public:
explicit WebUIConfigMapWebUIControllerFactory(WebUIConfigMap& config_map)
: config_map_(config_map) {}
~WebUIConfigMapWebUIControllerFactory() override = default;
WebUI::TypeID GetWebUIType(BrowserContext* browser_context,
const GURL& url) override {
auto* config = config_map_->GetConfig(browser_context, url);
return config ? reinterpret_cast<WebUI::TypeID>(config) : WebUI::kNoWebUI;
}
bool UseWebUIForURL(BrowserContext* browser_context,
const GURL& url) override {
return config_map_->GetConfig(browser_context, url);
}
std::unique_ptr<WebUIController> CreateWebUIControllerForURL(
WebUI* web_ui,
const GURL& url) override {
auto* browser_context = web_ui->GetWebContents()->GetBrowserContext();
auto* config = config_map_->GetConfig(browser_context, url);
return config ? config->CreateWebUIController(web_ui, url) : nullptr;
}
private:
// Keeping a reference should be safe since this class is owned by
// WebUIConfigMap.
const raw_ref<WebUIConfigMap> config_map_;
};
} // namespace
// static
WebUIConfigMap& WebUIConfigMap::GetInstance() {
static base::NoDestructor<WebUIConfigMap> instance;
return *instance.get();
}
WebUIConfigMap::WebUIConfigMap()
: webui_controller_factory_(
std::make_unique<WebUIConfigMapWebUIControllerFactory>(*this)) {
WebUIControllerFactory::RegisterFactory(webui_controller_factory_.get());
}
WebUIConfigMap::~WebUIConfigMap() = default;
void WebUIConfigMap::AddWebUIConfig(std::unique_ptr<WebUIConfig> config) {
CHECK_EQ(config->scheme(), kChromeUIScheme);
AddWebUIConfigImpl(std::move(config));
}
void WebUIConfigMap::AddUntrustedWebUIConfig(
std::unique_ptr<WebUIConfig> config) {
CHECK_EQ(config->scheme(), kChromeUIUntrustedScheme);
AddWebUIConfigImpl(std::move(config));
}
void WebUIConfigMap::AddWebUIConfigImpl(std::unique_ptr<WebUIConfig> config) {
GURL url(base::StrCat(
{config->scheme(), url::kStandardSchemeSeparator, config->host()}));
auto it = configs_map_.emplace(url::Origin::Create(url), std::move(config));
// CHECK if a WebUIConfig with the same host was already added.
CHECK(it.second) << url;
}
WebUIConfig* WebUIConfigMap::GetConfig(BrowserContext* browser_context,
const GURL& url) {
// "filesystem:" and "blob:" get dropped by url::Origin::Create() below. We
// don't want navigations to these URLs to have WebUI bindings, e.g.
// chrome.send() or Mojo.bindInterface(), since some WebUIs currently expose
// untrusted content via these schemes.
if (url.scheme() != kChromeUIScheme &&
url.scheme() != kChromeUIUntrustedScheme) {
return nullptr;
}
auto origin_and_config = configs_map_.find(url::Origin::Create(url));
if (origin_and_config == configs_map_.end()) {
return nullptr;
}
auto& config = origin_and_config->second;
if (!config->IsWebUIEnabled(browser_context) ||
!config->ShouldHandleURL(url)) {
return nullptr;
}
return config.get();
}
std::unique_ptr<WebUIConfig> WebUIConfigMap::RemoveConfig(const GURL& url) {
CHECK(url.scheme() == kChromeUIScheme ||
url.scheme() == kChromeUIUntrustedScheme);
auto it = configs_map_.find(url::Origin::Create(url));
if (it == configs_map_.end()) {
return nullptr;
}
auto webui_config = std::move(it->second);
configs_map_.erase(it);
return webui_config;
}
std::vector<WebUIConfigInfo> WebUIConfigMap::GetWebUIConfigList(
BrowserContext* browser_context) {
std::vector<WebUIConfigInfo> origins;
origins.reserve(configs_map_.size());
for (auto& it : configs_map_) {
auto& webui_config = it.second;
origins.push_back({
.origin = it.first,
.enabled =
browser_context && webui_config->IsWebUIEnabled(browser_context),
});
}
return origins;
}
} // namespace content