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	Utilities: Add a simple headless-browser
This utility creates a 'screenshot' of the given page after a few seconds of loading.
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		|  | @ -128,6 +128,7 @@ target_link_libraries(groups LibMain) | |||
| target_link_libraries(gunzip LibCompress LibMain) | ||||
| target_link_libraries(gzip LibCompress LibMain) | ||||
| target_link_libraries(head LibMain) | ||||
| target_link_libraries(headless-browser LibCore LibGfx LibWeb LibMain) | ||||
| target_link_libraries(hexdump LibMain) | ||||
| target_link_libraries(host LibMain) | ||||
| target_link_libraries(hostname LibMain) | ||||
|  |  | |||
							
								
								
									
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								Userland/Utilities/headless-browser.cpp
									
										
									
									
									
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								Userland/Utilities/headless-browser.cpp
									
										
									
									
									
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							|  | @ -0,0 +1,349 @@ | |||
| /*
 | ||||
|  * Copyright (c) 2022, Dex♪ <dexes.ttp@gmail.com> | ||||
|  * | ||||
|  * SPDX-License-Identifier: BSD-2-Clause | ||||
|  */ | ||||
| 
 | ||||
| #include <AK/Assertions.h> | ||||
| #include <AK/ByteBuffer.h> | ||||
| #include <AK/Format.h> | ||||
| #include <AK/HashTable.h> | ||||
| #include <AK/NonnullOwnPtr.h> | ||||
| #include <AK/StringBuilder.h> | ||||
| #include <AK/Types.h> | ||||
| #include <LibCore/ArgsParser.h> | ||||
| #include <LibCore/EventLoop.h> | ||||
| #include <LibCore/File.h> | ||||
| #include <LibCore/Timer.h> | ||||
| #include <LibGfx/Bitmap.h> | ||||
| #include <LibGfx/Font/FontDatabase.h> | ||||
| #include <LibGfx/ImageDecoder.h> | ||||
| #include <LibGfx/PNGWriter.h> | ||||
| #include <LibGfx/Rect.h> | ||||
| #include <LibMain/Main.h> | ||||
| #include <LibWeb/Cookie/ParsedCookie.h> | ||||
| #include <LibWeb/DOM/Document.h> | ||||
| #include <LibWeb/HTML/BrowsingContext.h> | ||||
| #include <LibWeb/ImageDecoding.h> | ||||
| #include <LibWeb/Layout/InitialContainingBlock.h> | ||||
| #include <LibWeb/Loader/ResourceLoader.h> | ||||
| #include <LibWeb/Page/Page.h> | ||||
| #include <LibWeb/Painting/PaintableBox.h> | ||||
| #include <LibWeb/WebSockets/WebSocket.h> | ||||
| 
 | ||||
| class HeadlessBrowserPageClient final : public Web::PageClient { | ||||
| public: | ||||
|     static NonnullOwnPtr<HeadlessBrowserPageClient> create() | ||||
|     { | ||||
|         return adopt_own(*new HeadlessBrowserPageClient()); | ||||
|     } | ||||
| 
 | ||||
|     Web::Page& page() { return *m_page; } | ||||
|     Web::Page const& page() const { return *m_page; } | ||||
| 
 | ||||
|     Web::Layout::InitialContainingBlock* layout_root() | ||||
|     { | ||||
|         auto* document = page().top_level_browsing_context().active_document(); | ||||
|         if (!document) | ||||
|             return nullptr; | ||||
|         return document->layout_node(); | ||||
|     } | ||||
| 
 | ||||
|     void load(AK::URL const& url) | ||||
|     { | ||||
|         page().load(url); | ||||
|     } | ||||
| 
 | ||||
|     void paint(Gfx::IntRect const& content_rect, Gfx::Bitmap& target) | ||||
|     { | ||||
|         Gfx::Painter painter(target); | ||||
| 
 | ||||
|         if (auto* document = page().top_level_browsing_context().active_document()) | ||||
|             document->update_layout(); | ||||
| 
 | ||||
|         painter.fill_rect({ {}, content_rect.size() }, palette().base()); | ||||
| 
 | ||||
|         auto* layout_root = this->layout_root(); | ||||
|         if (!layout_root) { | ||||
|             return; | ||||
|         } | ||||
| 
 | ||||
|         Web::PaintContext context(painter, palette(), content_rect.top_left()); | ||||
|         context.set_should_show_line_box_borders(false); | ||||
|         context.set_viewport_rect(content_rect); | ||||
|         context.set_has_focus(true); | ||||
|         layout_root->paint_all_phases(context); | ||||
|     } | ||||
| 
 | ||||
|     void setup_palette(Core::AnonymousBuffer theme_buffer) | ||||
|     { | ||||
|         m_palette_impl = Gfx::PaletteImpl::create_with_anonymous_buffer(theme_buffer); | ||||
|     } | ||||
| 
 | ||||
|     void set_screen_rect(Gfx::IntRect screen_rect) | ||||
|     { | ||||
|         m_screen_rect = screen_rect; | ||||
|         page().top_level_browsing_context().set_viewport_rect(screen_rect); | ||||
|     } | ||||
| 
 | ||||
|     // ^Web::PageClient
 | ||||
|     virtual Gfx::Palette palette() const override | ||||
|     { | ||||
|         return Gfx::Palette(*m_palette_impl); | ||||
|     } | ||||
| 
 | ||||
|     virtual Gfx::IntRect screen_rect() const override | ||||
|     { | ||||
|         return m_screen_rect; | ||||
|     } | ||||
| 
 | ||||
|     virtual Web::CSS::PreferredColorScheme preferred_color_scheme() const override | ||||
|     { | ||||
|         return m_preferred_color_scheme; | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_change_title(String const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_set_document_in_top_level_browsing_context(Web::DOM::Document*) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_start_loading(AK::URL const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_finish_loading(AK::URL const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_change_selection() override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_request_cursor_change(Gfx::StandardCursor) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_request_context_menu(Gfx::IntPoint const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_request_link_context_menu(Gfx::IntPoint const&, AK::URL const&, String const&, unsigned) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_request_image_context_menu(Gfx::IntPoint const&, AK::URL const&, String const&, unsigned, Gfx::Bitmap const*) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_click_link(AK::URL const&, String const&, unsigned) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_middle_click_link(AK::URL const&, String const&, unsigned) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_enter_tooltip_area(Gfx::IntPoint const&, String const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_leave_tooltip_area() override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_hover_link(AK::URL const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_unhover_link() override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_invalidate(Gfx::IntRect const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_change_favicon(Gfx::Bitmap const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_layout() override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_request_scroll_into_view(Gfx::IntRect const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_request_alert(String const&) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     virtual bool page_did_request_confirm(String const&) override | ||||
|     { | ||||
|         return false; | ||||
|     } | ||||
| 
 | ||||
|     virtual String page_did_request_prompt(String const&, String const&) override | ||||
|     { | ||||
|         return String::empty(); | ||||
|     } | ||||
| 
 | ||||
|     virtual String page_did_request_cookie(AK::URL const&, Web::Cookie::Source) override | ||||
|     { | ||||
|         return String::empty(); | ||||
|     } | ||||
| 
 | ||||
|     virtual void page_did_set_cookie(AK::URL const&, Web::Cookie::ParsedCookie const&, Web::Cookie::Source) override | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
| private: | ||||
|     HeadlessBrowserPageClient() | ||||
|         : m_page(make<Web::Page>(*this)) | ||||
|     { | ||||
|     } | ||||
| 
 | ||||
|     NonnullOwnPtr<Web::Page> m_page; | ||||
| 
 | ||||
|     RefPtr<Gfx::PaletteImpl> m_palette_impl; | ||||
|     Gfx::IntRect m_screen_rect { 0, 0, 800, 600 }; | ||||
|     Web::CSS::PreferredColorScheme m_preferred_color_scheme { Web::CSS::PreferredColorScheme::Auto }; | ||||
| }; | ||||
| 
 | ||||
| class HeadlessImageDecoderClient : public Web::ImageDecoding::Decoder { | ||||
| public: | ||||
|     static NonnullRefPtr<HeadlessImageDecoderClient> create() | ||||
|     { | ||||
|         return adopt_ref(*new HeadlessImageDecoderClient()); | ||||
|     } | ||||
| 
 | ||||
|     virtual ~HeadlessImageDecoderClient() override = default; | ||||
| 
 | ||||
|     virtual Optional<Web::ImageDecoding::DecodedImage> decode_image(ReadonlyBytes) override | ||||
|     { | ||||
|         return {}; | ||||
|     } | ||||
| 
 | ||||
| private: | ||||
|     explicit HeadlessImageDecoderClient() = default; | ||||
| }; | ||||
| 
 | ||||
| class HeadlessRequestServer : public Web::ResourceLoaderConnector { | ||||
| public: | ||||
|     static NonnullRefPtr<HeadlessRequestServer> create() | ||||
|     { | ||||
|         return adopt_ref(*new HeadlessRequestServer()); | ||||
|     } | ||||
| 
 | ||||
|     virtual ~HeadlessRequestServer() override { } | ||||
| 
 | ||||
|     virtual void prefetch_dns(AK::URL const&) override { } | ||||
|     virtual void preconnect(AK::URL const&) override { } | ||||
| 
 | ||||
|     virtual RefPtr<Web::ResourceLoaderConnectorRequest> start_request(String const&, AK::URL const&, HashMap<String, String> const&, ReadonlyBytes, Core::ProxyData const&) override | ||||
|     { | ||||
|         return {}; | ||||
|     } | ||||
| 
 | ||||
| private: | ||||
|     HeadlessRequestServer() { } | ||||
| }; | ||||
| 
 | ||||
| class HeadlessWebSocketClientManager : public Web::WebSockets::WebSocketClientManager { | ||||
| public: | ||||
|     static NonnullRefPtr<HeadlessWebSocketClientManager> create() | ||||
|     { | ||||
|         return adopt_ref(*new HeadlessWebSocketClientManager()); | ||||
|     } | ||||
| 
 | ||||
|     virtual ~HeadlessWebSocketClientManager() override { } | ||||
| 
 | ||||
|     virtual RefPtr<Web::WebSockets::WebSocketClientSocket> connect(AK::URL const&, String const&) override | ||||
|     { | ||||
|         return {}; | ||||
|     } | ||||
| 
 | ||||
| private: | ||||
|     HeadlessWebSocketClientManager() { } | ||||
| }; | ||||
| 
 | ||||
| ErrorOr<int> serenity_main(Main::Arguments arguments) | ||||
| { | ||||
|     int take_screenshot_after = 1; | ||||
|     StringView url; | ||||
|     StringView fonts_database; | ||||
|     StringView favicon_path; | ||||
|     StringView theme_path; | ||||
|     StringView error_page_url; | ||||
| 
 | ||||
|     Core::EventLoop event_loop; | ||||
|     Core::ArgsParser args_parser; | ||||
|     args_parser.set_general_help("This utility runs the Browser in headless mode."); | ||||
|     args_parser.add_option(take_screenshot_after, "Take a screenshot after [n] seconds (default: 1)", "screenshot", 's', "n"); | ||||
|     args_parser.add_option(fonts_database, "Path of the fonts on your system", "fonts", 'f', "font-database-path"); | ||||
|     args_parser.add_option(favicon_path, "Path of the default favicon", "favicon", 'i', "default-favicon-path"); | ||||
|     args_parser.add_option(theme_path, "Path of the system theme", "theme", 't', "default-theme-path"); | ||||
|     args_parser.add_option(error_page_url, "URL for the error page", "error-page", 'e', "error-page-url"); | ||||
|     args_parser.add_positional_argument(url, "URL to open", "url", Core::ArgsParser::Required::Yes); | ||||
|     args_parser.parse(arguments); | ||||
| 
 | ||||
|     Web::ImageDecoding::Decoder::initialize(HeadlessImageDecoderClient::create()); | ||||
|     Web::ResourceLoader::initialize(HeadlessRequestServer::create()); | ||||
|     Web::WebSockets::WebSocketClientManager::initialize(HeadlessWebSocketClientManager::create()); | ||||
| 
 | ||||
|     if (!favicon_path.is_empty()) | ||||
|         Web::FrameLoader::set_default_favicon_path(favicon_path); | ||||
| 
 | ||||
|     if (!fonts_database.is_empty()) | ||||
|         Gfx::FontDatabase::set_default_fonts_lookup_path(fonts_database); | ||||
| 
 | ||||
|     Gfx::FontDatabase::set_default_font_query("Katica 10 400 0"); | ||||
|     Gfx::FontDatabase::set_fixed_width_font_query("Csilla 10 400 0"); | ||||
| 
 | ||||
|     if (!error_page_url.is_empty()) | ||||
|         Web::FrameLoader::set_error_page_url(error_page_url); | ||||
| 
 | ||||
|     auto page_client = HeadlessBrowserPageClient::create(); | ||||
| 
 | ||||
|     if (!theme_path.is_empty()) | ||||
|         page_client->setup_palette(Gfx::load_system_theme(theme_path)); | ||||
|     else | ||||
|         page_client->setup_palette(Gfx::load_system_theme("/res/themes/Default.ini")); | ||||
| 
 | ||||
|     dbgln("Loading {}", url); | ||||
|     page_client->load(AK::URL(url)); | ||||
| 
 | ||||
|     // FIXME: Allow passing these values as arguments
 | ||||
|     page_client->set_screen_rect({ 0, 0, 800, 600 }); | ||||
| 
 | ||||
|     dbgln("Taking screenshot after {} seconds !", take_screenshot_after); | ||||
|     auto timer = Core::Timer::create_single_shot( | ||||
|         take_screenshot_after * 1000, | ||||
|         [page_client = move(page_client)]() mutable { | ||||
|             // FIXME: Allow passing the output path as argument
 | ||||
|             String output_file_path = "output.png"; | ||||
|             dbgln("Saving to {}", output_file_path); | ||||
| 
 | ||||
|             if (Core::File::exists(output_file_path)) | ||||
|                 [[maybe_unused]] | ||||
|                 auto ignored = Core::File::remove(output_file_path, Core::File::RecursionMode::Disallowed, true); | ||||
|             auto output_file = MUST(Core::File::open(output_file_path, Core::OpenMode::WriteOnly)); | ||||
| 
 | ||||
|             auto output_rect = page_client->screen_rect(); | ||||
|             auto output_bitmap = MUST(Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, output_rect.size())); | ||||
| 
 | ||||
|             page_client->paint(output_rect, output_bitmap); | ||||
| 
 | ||||
|             auto image_buffer = Gfx::PNGWriter::encode(output_bitmap); | ||||
|             output_file->write(image_buffer.data(), image_buffer.size()); | ||||
| 
 | ||||
|             exit(0); | ||||
|         }); | ||||
|     timer->start(); | ||||
| 
 | ||||
|     return event_loop.exec(); | ||||
| } | ||||
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