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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/autofill/content/browser/risk/fingerprint.h"
#include <stdint.h>
#include <memory>
#include "base/functional/bind.h"
#include "base/run_loop.h"
#include "build/build_config.h"
#include "components/autofill/content/browser/risk/proto/fingerprint.pb.h"
#include "components/autofill/core/common/autofill_clock.h"
#include "content/public/browser/gpu_data_manager.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/content_browser_test.h"
#include "content/public/test/test_utils.h"
#include "services/device/public/cpp/test/scoped_geolocation_overrider.h"
#include "services/device/public/mojom/geoposition.mojom.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/display/screen_info.h"
#include "ui/gfx/geometry/rect.h"
using testing::ElementsAre;
namespace autofill {
namespace risk {
namespace internal {
// Defined in the implementation file corresponding to this test.
void GetFingerprintInternal(
uint64_t obfuscated_gaia_id,
const gfx::Rect& window_bounds,
const gfx::Rect& content_bounds,
const display::ScreenInfo& screen_info,
const std::string& version,
const std::string& charset,
const std::string& accept_languages,
base::Time install_time,
const std::string& app_locale,
const std::string& user_agent,
base::TimeDelta timeout,
base::OnceCallback<void(std::unique_ptr<Fingerprint>)> callback);
} // namespace internal
// Constants that are passed verbatim to the fingerprinter code and should be
// serialized into the resulting protocol buffer.
const uint64_t kObfuscatedGaiaId = UINT64_C(16571487432910023183);
const char kCharset[] = "UTF-8";
const char kAcceptLanguages[] = "en-US,en";
const int kScreenColorDepth = 53;
const char kLocale[] = "en-GB";
const char kUserAgent[] = "TestUserAgent";
// Geolocation constants that are passed verbatim to the fingerprinter code and
// should be serialized into the resulting protocol buffer.
const double kLatitude = -42.0;
const double kLongitude = 17.3;
const double kAltitude = 123.4;
const double kAccuracy = 73.7;
const int kGeolocationTime = 87;
class AutofillRiskFingerprintTest : public content::ContentBrowserTest {
public:
AutofillRiskFingerprintTest()
: window_bounds_(2, 3, 5, 7),
content_bounds_(11, 13, 17, 37),
screen_bounds_(0, 0, 101, 71),
available_screen_bounds_(0, 11, 101, 60),
unavailable_screen_bounds_(0, 0, 101, 11) {
}
void SetUpOnMainThread() override {
auto position = device::mojom::Geoposition::New();
position->latitude = kLatitude;
position->longitude = kLongitude;
position->altitude = kAltitude;
position->accuracy = kAccuracy;
position->timestamp =
base::Time::UnixEpoch() + base::Milliseconds(kGeolocationTime);
geolocation_overrider_ =
std::make_unique<device::ScopedGeolocationOverrider>(
device::mojom::GeopositionResult::NewPosition(std::move(position)));
}
void GetFingerprintTestCallback(base::OnceClosure continuation_callback,
std::unique_ptr<Fingerprint> fingerprint) {
// Verify that all fields Chrome can fill have been filled.
ASSERT_TRUE(fingerprint->has_machine_characteristics());
const Fingerprint::MachineCharacteristics& machine =
fingerprint->machine_characteristics();
EXPECT_TRUE(machine.has_operating_system_build());
EXPECT_TRUE(machine.has_browser_install_time_hours());
#if BUILDFLAG(IS_FUCHSIA) || BUILDFLAG(IS_ANDROID)
// GetFontList() returns an empty list on Fuchsia and Android.
EXPECT_EQ(machine.font_size(), 0);
#else
EXPECT_GT(machine.font_size(), 0);
#endif // BUILDFLAG(IS_FUCHSIA) || BUILDFLAG(IS_ANDROID)
// TODO(isherman): http://crbug.com/358548 and EXPECT_EQ.
EXPECT_GE(machine.plugin_size(), 0);
EXPECT_TRUE(machine.has_utc_offset_ms());
EXPECT_TRUE(machine.has_browser_language());
EXPECT_GT(machine.requested_language_size(), 0);
EXPECT_TRUE(machine.has_charset());
EXPECT_TRUE(machine.has_screen_count());
ASSERT_TRUE(machine.has_screen_size());
EXPECT_TRUE(machine.screen_size().has_width());
EXPECT_TRUE(machine.screen_size().has_height());
EXPECT_TRUE(machine.has_screen_color_depth());
ASSERT_TRUE(machine.has_unavailable_screen_size());
EXPECT_TRUE(machine.unavailable_screen_size().has_width());
EXPECT_TRUE(machine.unavailable_screen_size().has_height());
EXPECT_TRUE(machine.has_user_agent());
ASSERT_TRUE(machine.has_cpu());
EXPECT_TRUE(machine.cpu().has_vendor_name());
EXPECT_TRUE(machine.cpu().has_brand());
EXPECT_TRUE(machine.has_ram());
EXPECT_TRUE(machine.has_browser_build());
EXPECT_TRUE(machine.has_browser_feature());
if (content::GpuDataManager::GetInstance()->GpuAccessAllowed(nullptr)) {
EXPECT_TRUE(machine.has_graphics_card());
}
if (machine.has_graphics_card()) {
EXPECT_TRUE(machine.graphics_card().has_vendor_id());
EXPECT_TRUE(machine.graphics_card().has_device_id());
}
ASSERT_TRUE(fingerprint->has_transient_state());
const Fingerprint::TransientState& transient_state =
fingerprint->transient_state();
ASSERT_TRUE(transient_state.has_inner_window_size());
ASSERT_TRUE(transient_state.has_outer_window_size());
EXPECT_TRUE(transient_state.inner_window_size().has_width());
EXPECT_TRUE(transient_state.inner_window_size().has_height());
EXPECT_TRUE(transient_state.outer_window_size().has_width());
EXPECT_TRUE(transient_state.outer_window_size().has_height());
ASSERT_FALSE(fingerprint->has_user_characteristics());
ASSERT_TRUE(fingerprint->has_metadata());
EXPECT_TRUE(fingerprint->metadata().has_timestamp_ms());
EXPECT_TRUE(fingerprint->metadata().has_obfuscated_gaia_id());
EXPECT_TRUE(fingerprint->metadata().has_fingerprinter_version());
// Some values have exact known (mocked out) values:
EXPECT_THAT(machine.requested_language(), ElementsAre("en-US", "en"));
EXPECT_EQ(kLocale, machine.browser_language());
EXPECT_EQ(kUserAgent, machine.user_agent());
EXPECT_EQ(kCharset, machine.charset());
EXPECT_EQ(kScreenColorDepth, machine.screen_color_depth());
EXPECT_EQ(unavailable_screen_bounds_.width(),
machine.unavailable_screen_size().width());
EXPECT_EQ(unavailable_screen_bounds_.height(),
machine.unavailable_screen_size().height());
EXPECT_EQ(Fingerprint::MachineCharacteristics::FEATURE_REQUEST_AUTOCOMPLETE,
machine.browser_feature());
EXPECT_EQ(content_bounds_.width(),
transient_state.inner_window_size().width());
EXPECT_EQ(content_bounds_.height(),
transient_state.inner_window_size().height());
EXPECT_EQ(window_bounds_.width(),
transient_state.outer_window_size().width());
EXPECT_EQ(window_bounds_.height(),
transient_state.outer_window_size().height());
EXPECT_EQ(kObfuscatedGaiaId, fingerprint->metadata().obfuscated_gaia_id());
std::move(continuation_callback).Run();
}
protected:
// Constants defining bounds in the screen coordinate system that are passed
// verbatim to the fingerprinter code and should be serialized into the
// resulting protocol buffer. Declared as class members because gfx::Rect is
// not a POD type, so it cannot be statically initialized.
const gfx::Rect window_bounds_;
const gfx::Rect content_bounds_;
const gfx::Rect screen_bounds_;
const gfx::Rect available_screen_bounds_;
const gfx::Rect unavailable_screen_bounds_;
std::unique_ptr<device::ScopedGeolocationOverrider> geolocation_overrider_;
};
// Test that getting a fingerprint works on some basic level.
IN_PROC_BROWSER_TEST_F(AutofillRiskFingerprintTest, GetFingerprint) {
display::ScreenInfo screen_info;
screen_info.depth = kScreenColorDepth;
screen_info.rect = screen_bounds_;
screen_info.available_rect = available_screen_bounds_;
base::RunLoop run_loop;
internal::GetFingerprintInternal(
kObfuscatedGaiaId, window_bounds_, content_bounds_, screen_info,
"25.0.0.123", kCharset, kAcceptLanguages, AutofillClock::Now(), kLocale,
kUserAgent,
base::Days(1), // Ought to be longer than any test run.
base::BindOnce(&AutofillRiskFingerprintTest::GetFingerprintTestCallback,
base::Unretained(this), run_loop.QuitWhenIdleClosure()));
// Wait for the callback to be called.
run_loop.Run();
}
} // namespace risk
} // namespace autofill
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