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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_WEBUI_NEW_TAB_PAGE_UNTRUSTED_SOURCE_H_
#define CHROME_BROWSER_UI_WEBUI_NEW_TAB_PAGE_UNTRUSTED_SOURCE_H_
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/scoped_observation.h"
#include "base/time/time.h"
#include "chrome/browser/new_tab_page/one_google_bar/one_google_bar_service.h"
#include "chrome/browser/new_tab_page/one_google_bar/one_google_bar_service_observer.h"
#include "content/public/browser/url_data_source.h"
class Profile;
// Serves chrome-untrusted://new-tab-page/* sources which can return content
// from outside the chromium codebase. The chrome-untrusted://new-tab-page/*
// sources can only be embedded in the chrome://new-tab-page by using an
// <iframe>.
//
// Offers the following helpers to embed content into chrome://new-tab-page in a
// generalized way:
// * chrome-untrusted://new-tab-page/image?<url>: Behaves like an img element
// with src set to <url>.
// * chrome-untrusted://new-tab-page/background_image?<url>: Behaves like an
// element that has <url> set as the background image, such that the image
// will cover the entire element.
// * chrome-untrusted://new-tab-page/custom_background_image?<params>: Similar
// to background_image but allows for custom styling. <params> are of the
// form <key>=<value>. The following keys are supported:
// * url: background image URL.
// * url2x: (optional) URL to a higher res background image.
// * size: (optional) CSS background-size property.
// * repeatX: (optional) CSS background-repeat-x property.
// * repeatY: (optional) CSS background-repeat-y property.
// * positionX: (optional) CSS background-position-x property.
// * positionY: (optional) CSS background-position-y property.
// Each of those helpers only accept URLs with HTTPS or chrome-untrusted:.
class UntrustedSource : public content::URLDataSource,
public OneGoogleBarServiceObserver {
public:
explicit UntrustedSource(Profile* profile);
~UntrustedSource() override;
UntrustedSource(const UntrustedSource&) = delete;
UntrustedSource& operator=(const UntrustedSource&) = delete;
// content::URLDataSource:
std::string GetContentSecurityPolicy(
network::mojom::CSPDirectiveName directive) override;
std::string GetSource() override;
void StartDataRequest(
const GURL& url,
const content::WebContents::Getter& wc_getter,
content::URLDataSource::GotDataCallback callback) override;
std::string GetMimeType(const GURL& url) override;
bool AllowCaching() override;
bool ShouldReplaceExistingSource() override;
bool ShouldServeMimeTypeAsContentTypeHeader() override;
bool ShouldServiceRequest(const GURL& url,
content::BrowserContext* browser_context,
int render_process_id) override;
private:
// OneGoogleBarServiceObserver:
void OnOneGoogleBarDataUpdated() override;
void OnOneGoogleBarServiceShuttingDown() override;
void ServeBackgroundImage(const GURL& url,
const GURL& url_2x,
const std::string& size,
const std::string& repeat_x,
const std::string& repeat_y,
const std::string& position_x,
const std::string& position_y,
const std::string& scrim_display,
content::URLDataSource::GotDataCallback callback);
bool IsURLAllowed(const GURL& url);
bool IsURLBlockedByPolicy(const GURL& url);
std::vector<content::URLDataSource::GotDataCallback>
one_google_bar_callbacks_;
// This dangling raw_ptr occurred in:
// browser_tests: All/TabSharingUIViewsBrowserTest.ChangeCapturedTabFavicon/0
// https://ci.chromium.org/ui/p/chromium-m113/builders/try/win-rel/958/test-results?q=ExactID%3Aninja%3A%2F%2Fchrome%2Ftest%3Abrowser_tests%2FTabSharingUIViewsBrowserTest.ChangeCapturedTabFavicon%2FAll.0+VHash%3Abdbee181b3e0309b
raw_ptr<OneGoogleBarService, FlakyDanglingUntriaged> one_google_bar_service_;
base::ScopedObservation<OneGoogleBarService, OneGoogleBarServiceObserver>
one_google_bar_service_observation_{this};
std::optional<base::TimeTicks> one_google_bar_load_start_time_;
raw_ptr<Profile, FlakyDanglingUntriaged> profile_;
};
#endif // CHROME_BROWSER_UI_WEBUI_NEW_TAB_PAGE_UNTRUSTED_SOURCE_H_
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