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ladybird/Userland/Utilities/headless-browser.cpp

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/*
* Copyright (c) 2022, Dex♪ <dexes.ttp@gmail.com>
* Copyright (c) 2023, Tim Flynn <trflynn89@serenityos.org>
* Copyright (c) 2023, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2023, Sam Atkins <atkinssj@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Badge.h>
#include <AK/ByteString.h>
#include <AK/Function.h>
#include <AK/JsonObject.h>
#include <AK/JsonParser.h>
#include <AK/LexicalPath.h>
#include <AK/NonnullOwnPtr.h>
#include <AK/Platform.h>
#include <AK/String.h>
#include <AK/URL.h>
#include <AK/Vector.h>
#include <Ladybird/Types.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/ConfigFile.h>
#include <LibCore/DirIterator.h>
#include <LibCore/Directory.h>
#include <LibCore/EventLoop.h>
#include <LibCore/File.h>
#include <LibCore/Promise.h>
#include <LibCore/ResourceImplementationFile.h>
#include <LibCore/Timer.h>
#include <LibDiff/Format.h>
#include <LibDiff/Generator.h>
#include <LibFileSystem/FileSystem.h>
#include <LibGfx/Bitmap.h>
#include <LibGfx/Font/FontDatabase.h>
#include <LibGfx/ImageFormats/PNGWriter.h>
#include <LibGfx/Point.h>
#include <LibGfx/Rect.h>
#include <LibGfx/ShareableBitmap.h>
#include <LibGfx/Size.h>
#include <LibGfx/StandardCursor.h>
#include <LibGfx/SystemTheme.h>
#include <LibIPC/File.h>
#include <LibWeb/Cookie/Cookie.h>
#include <LibWeb/Cookie/ParsedCookie.h>
#include <LibWeb/HTML/ActivateTab.h>
#include <LibWeb/Worker/WebWorkerClient.h>
#include <LibWebView/CookieJar.h>
#include <LibWebView/Database.h>
#include <LibWebView/URL.h>
#include <LibWebView/ViewImplementation.h>
#include <LibWebView/WebContentClient.h>
#if !defined(AK_OS_SERENITY)
# include <Ladybird/HelperProcess.h>
# include <Ladybird/Utilities.h>
#endif
constexpr int DEFAULT_TIMEOUT_MS = 30000; // 30sec
static StringView s_current_test_path;
class HeadlessWebContentView final : public WebView::ViewImplementation {
public:
static ErrorOr<NonnullOwnPtr<HeadlessWebContentView>> create(Core::AnonymousBuffer theme, Gfx::IntSize const& window_size, StringView web_driver_ipc_path, Ladybird::IsLayoutTestMode is_layout_test_mode = Ladybird::IsLayoutTestMode::No)
{
#if defined(AK_OS_SERENITY)
auto database = TRY(WebView::Database::create());
#else
auto sql_server_paths = TRY(get_paths_for_helper_process("SQLServer"sv));
auto database = TRY(WebView::Database::create(move(sql_server_paths)));
#endif
auto cookie_jar = TRY(WebView::CookieJar::create(*database));
auto view = TRY(adopt_nonnull_own_or_enomem(new (nothrow) HeadlessWebContentView(move(database), move(cookie_jar))));
#if defined(AK_OS_SERENITY)
view->m_client_state.client = TRY(WebView::WebContentClient::try_create(*view));
(void)is_layout_test_mode;
#else
Ladybird::WebContentOptions web_content_options { .is_layout_test_mode = is_layout_test_mode };
auto candidate_web_content_paths = TRY(get_paths_for_helper_process("WebContent"sv));
view->m_client_state.client = TRY(launch_web_content_process(*view, candidate_web_content_paths, web_content_options));
#endif
view->client().async_update_system_theme(move(theme));
view->client().async_update_system_fonts(Gfx::FontDatabase::default_font_query(), Gfx::FontDatabase::fixed_width_font_query(), Gfx::FontDatabase::window_title_font_query());
view->m_viewport_rect = { { 0, 0 }, window_size };
view->client().async_set_viewport_rect(view->m_viewport_rect.to_type<Web::DevicePixels>());
view->client().async_set_window_size(window_size.to_type<Web::DevicePixels>());
if (!web_driver_ipc_path.is_empty())
view->client().async_connect_to_webdriver(web_driver_ipc_path);
view->m_client_state.client->on_web_content_process_crash = [] {
warnln("\033[31;1mWebContent Crashed!!\033[0m");
if (!s_current_test_path.is_empty()) {
warnln(" Last started test: {}", s_current_test_path);
}
VERIFY_NOT_REACHED();
};
return view;
}
RefPtr<Gfx::Bitmap> take_screenshot()
{
VERIFY(!m_pending_screenshot);
m_pending_screenshot = Core::Promise<RefPtr<Gfx::Bitmap>>::construct();
client().async_take_document_screenshot();
auto screenshot = MUST(m_pending_screenshot->await());
m_pending_screenshot = nullptr;
return screenshot;
}
virtual void did_receive_screenshot(Badge<WebView::WebContentClient>, Gfx::ShareableBitmap const& screenshot) override
{
VERIFY(m_pending_screenshot);
m_pending_screenshot->resolve(screenshot.bitmap());
}
ErrorOr<String> dump_layout_tree()
{
return String::from_byte_string(client().dump_layout_tree());
}
ErrorOr<String> dump_paint_tree()
{
return String::from_byte_string(client().dump_paint_tree());
}
ErrorOr<String> dump_text()
{
return String::from_byte_string(client().dump_text());
}
void clear_content_filters()
{
client().async_set_content_filters({});
}
private:
HeadlessWebContentView(NonnullRefPtr<WebView::Database> database, WebView::CookieJar cookie_jar)
: m_database(move(database))
, m_cookie_jar(move(cookie_jar))
{
on_scroll_to_point = [this](auto position) {
m_viewport_rect.set_location(position);
client().async_set_viewport_rect(m_viewport_rect.to_type<Web::DevicePixels>());
};
on_scroll_by_delta = [this](auto x_delta, auto y_delta) {
auto position = m_viewport_rect.location();
position.set_x(position.x() + x_delta);
position.set_y(position.y() + y_delta);
if (on_scroll_to_point)
on_scroll_to_point(position);
};
on_get_cookie = [this](auto const& url, auto source) -> ByteString {
return m_cookie_jar.get_cookie(url, source);
};
on_set_cookie = [this](auto const& url, auto const& cookie, auto source) {
m_cookie_jar.set_cookie(url, cookie, source);
};
on_request_worker_agent = []() {
#if defined(AK_OS_SERENITY)
auto worker_client = MUST(Web::HTML::WebWorkerClient::try_create());
#else
auto worker_client = MUST(launch_web_worker_process(MUST(get_paths_for_helper_process("WebWorker"sv))));
#endif
return worker_client->dup_sockets();
};
}
void update_zoom() override { }
void create_client() override { }
virtual Web::DevicePixelRect viewport_rect() const override { return m_viewport_rect.to_type<Web::DevicePixels>(); }
virtual Gfx::IntPoint to_content_position(Gfx::IntPoint widget_position) const override { return widget_position; }
virtual Gfx::IntPoint to_widget_position(Gfx::IntPoint content_position) const override { return content_position; }
private:
Gfx::IntRect m_viewport_rect;
RefPtr<Core::Promise<RefPtr<Gfx::Bitmap>>> m_pending_screenshot;
NonnullRefPtr<WebView::Database> m_database;
WebView::CookieJar m_cookie_jar;
};
static ErrorOr<NonnullRefPtr<Core::Timer>> load_page_for_screenshot_and_exit(Core::EventLoop& event_loop, HeadlessWebContentView& view, int screenshot_timeout)
{
// FIXME: Allow passing the output path as an argument.
static constexpr auto output_file_path = "output.png"sv;
if (FileSystem::exists(output_file_path))
TRY(FileSystem::remove(output_file_path, FileSystem::RecursionMode::Disallowed));
outln("Taking screenshot after {} seconds", screenshot_timeout);
auto timer = TRY(Core::Timer::create_single_shot(
screenshot_timeout * 1000,
[&]() {
if (auto screenshot = view.take_screenshot()) {
outln("Saving screenshot to {}", output_file_path);
auto output_file = MUST(Core::File::open(output_file_path, Core::File::OpenMode::Write));
auto image_buffer = MUST(Gfx::PNGWriter::encode(*screenshot));
MUST(output_file->write_until_depleted(image_buffer.bytes()));
} else {
warnln("No screenshot available");
}
event_loop.quit(0);
}));
timer->start();
return timer;
}
enum class TestMode {
Layout,
Text,
Ref,
};
enum class TestResult {
Pass,
Fail,
Skipped,
Timeout,
};
static StringView test_result_to_string(TestResult result)
{
switch (result) {
case TestResult::Pass:
return "Pass"sv;
case TestResult::Fail:
return "Fail"sv;
case TestResult::Skipped:
return "Skipped"sv;
case TestResult::Timeout:
return "Timeout"sv;
}
VERIFY_NOT_REACHED();
}
static ErrorOr<TestResult> run_dump_test(HeadlessWebContentView& view, StringView input_path, StringView expectation_path, TestMode mode, int timeout_in_milliseconds = DEFAULT_TIMEOUT_MS)
{
Core::EventLoop loop;
bool did_timeout = false;
auto timeout_timer = TRY(Core::Timer::create_single_shot(timeout_in_milliseconds, [&] {
did_timeout = true;
loop.quit(0);
}));
auto url = URL::create_with_file_scheme(TRY(FileSystem::real_path(input_path)));
String result;
auto did_finish_test = false;
auto did_finish_loading = false;
if (mode == TestMode::Layout) {
view.on_load_finish = [&](auto const& loaded_url) {
VERIFY(url.equals(loaded_url, URL::ExcludeFragment::Yes));
// NOTE: We take a screenshot here to force the lazy layout of SVG-as-image documents to happen.
// It also causes a lot more code to run, which is good for finding bugs. :^)
(void)view.take_screenshot();
StringBuilder builder;
builder.append(view.dump_layout_tree().release_value_but_fixme_should_propagate_errors());
builder.append("\n"sv);
builder.append(view.dump_paint_tree().release_value_but_fixme_should_propagate_errors());
result = builder.to_string().release_value_but_fixme_should_propagate_errors();
loop.quit(0);
};
view.on_text_test_finish = {};
} else if (mode == TestMode::Text) {
view.on_load_finish = [&](auto const& loaded_url) {
VERIFY(url.equals(loaded_url, URL::ExcludeFragment::Yes));
did_finish_loading = true;
if (did_finish_test)
loop.quit(0);
};
view.on_text_test_finish = [&]() {
result = view.dump_text().release_value_but_fixme_should_propagate_errors();
did_finish_test = true;
if (did_finish_loading)
loop.quit(0);
};
}
view.load(url);
timeout_timer->start();
loop.exec();
if (did_timeout)
return TestResult::Timeout;
if (expectation_path.is_empty()) {
out("{}", result);
return TestResult::Skipped;
}
auto expectation_file_or_error = Core::File::open(expectation_path, Core::File::OpenMode::Read);
if (expectation_file_or_error.is_error()) {
warnln("Failed opening '{}': {}", expectation_path, expectation_file_or_error.error());
return expectation_file_or_error.release_error();
}
auto expectation_file = expectation_file_or_error.release_value();
auto expectation = TRY(String::from_utf8(StringView(TRY(expectation_file->read_until_eof()).bytes())));
auto actual = result;
auto actual_trimmed = TRY(actual.trim("\n"sv, TrimMode::Right));
auto expectation_trimmed = TRY(expectation.trim("\n"sv, TrimMode::Right));
if (actual_trimmed == expectation_trimmed)
return TestResult::Pass;
auto const color_output = isatty(STDOUT_FILENO) ? Diff::ColorOutput::Yes : Diff::ColorOutput::No;
if (color_output == Diff::ColorOutput::Yes)
outln("\n\033[33;1mTest failed\033[0m: {}", input_path);
else
outln("\nTest failed: {}", input_path);
auto hunks = TRY(Diff::from_text(expectation, actual, 3));
auto out = TRY(Core::File::standard_output());
TRY(Diff::write_unified_header(expectation_path, expectation_path, *out));
for (auto const& hunk : hunks)
TRY(Diff::write_unified(hunk, *out, color_output));
return TestResult::Fail;
}
static ErrorOr<TestResult> run_ref_test(HeadlessWebContentView& view, StringView input_path, bool dump_failed_ref_tests, int timeout_in_milliseconds = DEFAULT_TIMEOUT_MS)
{
Core::EventLoop loop;
bool did_timeout = false;
auto timeout_timer = TRY(Core::Timer::create_single_shot(timeout_in_milliseconds, [&] {
did_timeout = true;
loop.quit(0);
}));
view.load(URL::create_with_file_scheme(TRY(FileSystem::real_path(input_path))));
RefPtr<Gfx::Bitmap> actual_screenshot, expectation_screenshot;
view.on_load_finish = [&](auto const&) {
if (actual_screenshot) {
expectation_screenshot = view.take_screenshot();
loop.quit(0);
} else {
actual_screenshot = view.take_screenshot();
view.debug_request("load-reference-page");
}
};
timeout_timer->start();
loop.exec();
if (did_timeout)
return TestResult::Timeout;
VERIFY(actual_screenshot);
VERIFY(expectation_screenshot);
if (actual_screenshot->visually_equals(*expectation_screenshot))
return TestResult::Pass;
if (dump_failed_ref_tests) {
warnln("\033[33;1mRef test {} failed; dumping screenshots\033[0m", input_path);
auto title = LexicalPath::title(input_path);
auto dump_screenshot = [&](Gfx::Bitmap& bitmap, StringView path) -> ErrorOr<void> {
auto screenshot_file = TRY(Core::File::open(path, Core::File::OpenMode::Write));
auto encoded_data = TRY(Gfx::PNGWriter::encode(bitmap));
TRY(screenshot_file->write_until_depleted(encoded_data));
warnln("\033[33;1mDumped {}\033[0m", TRY(FileSystem::real_path(path)));
return {};
};
auto mkdir_result = Core::System::mkdir("test-dumps"sv, 0755);
if (mkdir_result.is_error() && mkdir_result.error().code() != EEXIST)
return mkdir_result.release_error();
TRY(dump_screenshot(*actual_screenshot, TRY(String::formatted("test-dumps/{}.png", title))));
TRY(dump_screenshot(*expectation_screenshot, TRY(String::formatted("test-dumps/{}-ref.png", title))));
}
return TestResult::Fail;
}
static ErrorOr<TestResult> run_test(HeadlessWebContentView& view, StringView input_path, StringView expectation_path, TestMode mode, bool dump_failed_ref_tests)
{
// Clear the current document.
// FIXME: Implement a debug-request to do this more thoroughly.
auto promise = Core::Promise<Empty>::construct();
view.on_load_finish = [&](auto) {
promise->resolve({});
};
view.on_text_test_finish = {};
view.load(URL("about:blank"sv));
MUST(promise->await());
s_current_test_path = input_path;
switch (mode) {
case TestMode::Text:
case TestMode::Layout:
return run_dump_test(view, input_path, expectation_path, mode);
case TestMode::Ref:
return run_ref_test(view, input_path, dump_failed_ref_tests);
default:
VERIFY_NOT_REACHED();
}
}
struct Test {
String input_path;
String expectation_path;
TestMode mode;
Optional<TestResult> result;
};
static Vector<ByteString> s_skipped_tests;
static ErrorOr<void> load_test_config(StringView test_root_path)
{
auto config_path = LexicalPath::join(test_root_path, "TestConfig.ini"sv);
auto config_or_error = Core::ConfigFile::open(config_path.string());
if (config_or_error.is_error()) {
if (config_or_error.error().code() == ENOENT)
return {};
dbgln("Unable to open test config {}", config_path);
return config_or_error.release_error();
}
auto config = config_or_error.release_value();
for (auto const& group : config->groups()) {
if (group == "Skipped"sv) {
for (auto& key : config->keys(group))
s_skipped_tests.append(LexicalPath::join(test_root_path, key).string());
} else {
warnln("Unknown group '{}' in config {}", group, config_path);
}
}
return {};
}
static ErrorOr<void> collect_dump_tests(Vector<Test>& tests, StringView path, StringView trail, TestMode mode)
{
Core::DirIterator it(TRY(String::formatted("{}/input/{}", path, trail)).to_byte_string(), Core::DirIterator::Flags::SkipDots);
while (it.has_next()) {
auto name = it.next_path();
auto input_path = TRY(FileSystem::real_path(TRY(String::formatted("{}/input/{}/{}", path, trail, name))));
if (FileSystem::is_directory(input_path)) {
TRY(collect_dump_tests(tests, path, TRY(String::formatted("{}/{}", trail, name)), mode));
continue;
}
if (!name.ends_with(".html"sv))
continue;
auto basename = LexicalPath::title(name);
auto expectation_path = TRY(String::formatted("{}/expected/{}/{}.txt", path, trail, basename));
// FIXME: Test paths should be ByteString
tests.append({ TRY(String::from_byte_string(input_path)), move(expectation_path), mode, {} });
}
return {};
}
static ErrorOr<void> collect_ref_tests(Vector<Test>& tests, StringView path)
{
TRY(Core::Directory::for_each_entry(path, Core::DirIterator::SkipDots, [&](Core::DirectoryEntry const& entry, Core::Directory const&) -> ErrorOr<IterationDecision> {
if (entry.type == Core::DirectoryEntry::Type::Directory)
return IterationDecision::Continue;
auto input_path = TRY(FileSystem::real_path(TRY(String::formatted("{}/{}", path, entry.name))));
// FIXME: Test paths should be ByteString
tests.append({ TRY(String::from_byte_string(input_path)), {}, TestMode::Ref, {} });
return IterationDecision::Continue;
}));
return {};
}
static ErrorOr<int> run_tests(HeadlessWebContentView& view, StringView test_root_path, bool dump_failed_ref_tests)
{
view.clear_content_filters();
TRY(load_test_config(test_root_path));
Vector<Test> tests;
TRY(collect_dump_tests(tests, TRY(String::formatted("{}/Layout", test_root_path)), "."sv, TestMode::Layout));
TRY(collect_dump_tests(tests, TRY(String::formatted("{}/Text", test_root_path)), "."sv, TestMode::Text));
TRY(collect_ref_tests(tests, TRY(String::formatted("{}/Ref", test_root_path))));
size_t pass_count = 0;
size_t fail_count = 0;
size_t timeout_count = 0;
size_t skipped_count = 0;
bool is_tty = isatty(STDOUT_FILENO);
outln("Running {} tests...", tests.size());
for (size_t i = 0; i < tests.size(); ++i) {
auto& test = tests[i];
if (is_tty) {
// Keep clearing and reusing the same line if stdout is a TTY.
out("\33[2K\r");
}
out("{}/{}: {}", i + 1, tests.size(), LexicalPath::relative_path(test.input_path, test_root_path));
if (is_tty)
fflush(stdout);
else
outln("");
if (s_skipped_tests.contains_slow(test.input_path.bytes_as_string_view())) {
test.result = TestResult::Skipped;
++skipped_count;
continue;
}
test.result = TRY(run_test(view, test.input_path, test.expectation_path, test.mode, dump_failed_ref_tests));
switch (*test.result) {
case TestResult::Pass:
++pass_count;
break;
case TestResult::Fail:
++fail_count;
break;
case TestResult::Timeout:
++timeout_count;
break;
case TestResult::Skipped:
VERIFY_NOT_REACHED();
break;
}
}
if (is_tty)
outln("\33[2K\rDone!");
outln("==================================================");
outln("Pass: {}, Fail: {}, Skipped: {}, Timeout: {}", pass_count, fail_count, skipped_count, timeout_count);
outln("==================================================");
for (auto& test : tests) {
if (*test.result == TestResult::Pass)
continue;
outln("{}: {}", test_result_to_string(*test.result), test.input_path);
}
if (timeout_count == 0 && fail_count == 0)
return 0;
return 1;
}
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
Core::EventLoop event_loop;
int screenshot_timeout = 1;
StringView raw_url;
auto resources_folder = "/res"sv;
StringView web_driver_ipc_path;
bool dump_failed_ref_tests = false;
bool dump_layout_tree = false;
bool dump_text = false;
bool is_layout_test_mode = false;
StringView test_root_path;
Core::ArgsParser args_parser;
args_parser.set_general_help("This utility runs the Browser in headless mode.");
args_parser.add_option(screenshot_timeout, "Take a screenshot after [n] seconds (default: 1)", "screenshot", 's', "n");
args_parser.add_option(dump_layout_tree, "Dump layout tree and exit", "dump-layout-tree", 'd');
args_parser.add_option(dump_text, "Dump text and exit", "dump-text", 'T');
args_parser.add_option(test_root_path, "Run tests in path", "run-tests", 'R', "test-root-path");
args_parser.add_option(dump_failed_ref_tests, "Dump screenshots of failing ref tests", "dump-failed-ref-tests", 'D');
args_parser.add_option(resources_folder, "Path of the base resources folder (defaults to /res)", "resources", 'r', "resources-root-path");
args_parser.add_option(web_driver_ipc_path, "Path to the WebDriver IPC socket", "webdriver-ipc-path", 0, "path");
args_parser.add_option(is_layout_test_mode, "Enable layout test mode", "layout-test-mode", 0);
args_parser.add_positional_argument(raw_url, "URL to open", "url", Core::ArgsParser::Required::No);
args_parser.parse(arguments);
Gfx::FontDatabase::set_default_font_query("Katica 10 400 0");
Gfx::FontDatabase::set_window_title_font_query("Katica 10 700 0");
Gfx::FontDatabase::set_fixed_width_font_query("Csilla 10 400 0");
Core::ResourceImplementation::install(make<Core::ResourceImplementationFile>(MUST(String::from_utf8(resources_folder))));
auto theme_path = LexicalPath::join(resources_folder, "themes"sv, "Default.ini"sv);
auto theme = TRY(Gfx::load_system_theme(theme_path.string()));
// FIXME: Allow passing the window size as an argument.
static constexpr Gfx::IntSize window_size { 800, 600 };
if (!test_root_path.is_empty()) {
// --run-tests implies --layout-test-mode.
is_layout_test_mode = true;
}
auto view = TRY(HeadlessWebContentView::create(move(theme), window_size, web_driver_ipc_path, is_layout_test_mode ? Ladybird::IsLayoutTestMode::Yes : Ladybird::IsLayoutTestMode::No));
if (!test_root_path.is_empty()) {
return run_tests(*view, test_root_path, dump_failed_ref_tests);
}
auto url = WebView::sanitize_url(raw_url);
if (!url.has_value()) {
warnln("Invalid URL: \"{}\"", raw_url);
return Error::from_string_literal("Invalid URL");
}
if (dump_layout_tree) {
TRY(run_dump_test(*view, raw_url, ""sv, TestMode::Layout));
return 0;
}
if (dump_text) {
TRY(run_dump_test(*view, raw_url, ""sv, TestMode::Text));
return 0;
}
if (web_driver_ipc_path.is_empty()) {
auto timer = TRY(load_page_for_screenshot_and_exit(event_loop, *view, screenshot_timeout));
return event_loop.exec();
}
return 0;
}
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