|  | // Copyright 2015 The Chromium Authors. All rights reserved. | 
|  | // Use of this source code is governed by a BSD-style license that can be | 
|  | // found in the LICENSE file. | 
|  |  | 
|  | #include "components/ssl_errors/error_classification.h" | 
|  |  | 
|  | #include <memory> | 
|  |  | 
|  | #include "base/files/file_path.h" | 
|  | #include "base/strings/string_split.h" | 
|  | #include "base/test/metrics/histogram_tester.h" | 
|  | #include "base/test/scoped_task_environment.h" | 
|  | #include "base/test/simple_test_clock.h" | 
|  | #include "base/test/simple_test_tick_clock.h" | 
|  | #include "base/time/default_clock.h" | 
|  | #include "base/time/default_tick_clock.h" | 
|  | #include "components/network_time/network_time_test_utils.h" | 
|  | #include "components/network_time/network_time_tracker.h" | 
|  | #include "components/prefs/testing_pref_service.h" | 
|  | #include "net/base/net_errors.h" | 
|  | #include "net/cert/x509_cert_types.h" | 
|  | #include "net/cert/x509_certificate.h" | 
|  | #include "net/test/cert_test_util.h" | 
|  | #include "net/test/embedded_test_server/embedded_test_server.h" | 
|  | #include "net/test/embedded_test_server/http_response.h" | 
|  | #include "net/test/test_certificate_data.h" | 
|  | #include "net/test/test_data_directory.h" | 
|  | #include "services/network/public/cpp/weak_wrapper_shared_url_loader_factory.h" | 
|  | #include "services/network/test/test_shared_url_loader_factory.h" | 
|  | #include "services/network/test/test_url_loader_factory.h" | 
|  | #include "testing/gmock/include/gmock/gmock.h" | 
|  | #include "testing/gtest/include/gtest/gtest.h" | 
|  | #include "url/gurl.h" | 
|  |  | 
|  | using testing::ElementsAre; | 
|  |  | 
|  | namespace { | 
|  | const char kNetworkTimeHistogram[] = "interstitial.ssl.clockstate.network3"; | 
|  | const char kSslErrorCauseHistogram[] = "interstitial.ssl.cause.overridable"; | 
|  |  | 
|  | static std::unique_ptr<net::test_server::HttpResponse> | 
|  | NetworkErrorResponseHandler(const net::test_server::HttpRequest& request) { | 
|  | return std::unique_ptr<net::test_server::HttpResponse>( | 
|  | new net::test_server::RawHttpResponse("", "")); | 
|  | } | 
|  |  | 
|  | }  // namespace | 
|  |  | 
|  | class SSLErrorClassificationTest : public ::testing::Test { | 
|  | public: | 
|  | SSLErrorClassificationTest() | 
|  | : field_trial_test_(new network_time::FieldTrialTest()) {} | 
|  | network_time::FieldTrialTest* field_trial_test() { | 
|  | return field_trial_test_.get(); | 
|  | } | 
|  |  | 
|  | protected: | 
|  | network::TestURLLoaderFactory test_url_loader_factory_; | 
|  |  | 
|  | private: | 
|  | std::unique_ptr<network_time::FieldTrialTest> field_trial_test_; | 
|  | }; | 
|  |  | 
|  | TEST_F(SSLErrorClassificationTest, TestNameMismatch) { | 
|  | scoped_refptr<net::X509Certificate> example_cert = net::ImportCertFromFile( | 
|  | net::GetTestCertsDirectory(), "subjectAltName_www_example_com.pem"); | 
|  | ASSERT_TRUE(example_cert); | 
|  | std::vector<std::string> dns_names_example; | 
|  | example_cert->GetSubjectAltName(&dns_names_example, nullptr); | 
|  | ASSERT_THAT(dns_names_example, ElementsAre("www.example.com")); | 
|  | std::vector<std::string> hostname_tokens_example = | 
|  | ssl_errors::Tokenize(dns_names_example[0]); | 
|  | ASSERT_THAT(hostname_tokens_example, ElementsAre("www", "example", "com")); | 
|  | std::vector<std::vector<std::string>> dns_name_tokens_example; | 
|  | dns_name_tokens_example.push_back(hostname_tokens_example); | 
|  | ASSERT_EQ(1u, dns_name_tokens_example.size());  // [["www","example","com"]] | 
|  | ASSERT_THAT(dns_name_tokens_example[0], ElementsAre("www", "example", "com")); | 
|  |  | 
|  | { | 
|  | GURL origin("https://example.com"); | 
|  | std::string www_host; | 
|  | std::vector<std::string> host_name_tokens = base::SplitString( | 
|  | origin.host(), ".", base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL); | 
|  | EXPECT_TRUE( | 
|  | ssl_errors::GetWWWSubDomainMatch(origin, dns_names_example, &www_host)); | 
|  | EXPECT_EQ("www.example.com", www_host); | 
|  | EXPECT_FALSE(ssl_errors::NameUnderAnyNames(host_name_tokens, | 
|  | dns_name_tokens_example)); | 
|  | EXPECT_FALSE(ssl_errors::AnyNamesUnderName(dns_name_tokens_example, | 
|  | host_name_tokens)); | 
|  | EXPECT_FALSE(ssl_errors::IsSubDomainOutsideWildcard(origin, *example_cert)); | 
|  | EXPECT_FALSE( | 
|  | ssl_errors::IsCertLikelyFromMultiTenantHosting(origin, *example_cert)); | 
|  | EXPECT_TRUE(ssl_errors::IsCertLikelyFromSameDomain(origin, *example_cert)); | 
|  | } | 
|  |  | 
|  | { | 
|  | GURL origin("https://foo.blah.example.com"); | 
|  | std::string www_host; | 
|  | std::vector<std::string> host_name_tokens = base::SplitString( | 
|  | origin.host(), ".", base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL); | 
|  | EXPECT_FALSE( | 
|  | ssl_errors::GetWWWSubDomainMatch(origin, dns_names_example, &www_host)); | 
|  | EXPECT_FALSE(ssl_errors::NameUnderAnyNames(host_name_tokens, | 
|  | dns_name_tokens_example)); | 
|  | EXPECT_FALSE(ssl_errors::AnyNamesUnderName(dns_name_tokens_example, | 
|  | host_name_tokens)); | 
|  | EXPECT_TRUE(ssl_errors::IsCertLikelyFromSameDomain(origin, *example_cert)); | 
|  | } | 
|  |  | 
|  | { | 
|  | GURL origin("https://foo.www.example.com"); | 
|  | std::string www_host; | 
|  | std::vector<std::string> host_name_tokens = base::SplitString( | 
|  | origin.host(), ".", base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL); | 
|  | EXPECT_FALSE( | 
|  | ssl_errors::GetWWWSubDomainMatch(origin, dns_names_example, &www_host)); | 
|  | EXPECT_TRUE(ssl_errors::NameUnderAnyNames(host_name_tokens, | 
|  | dns_name_tokens_example)); | 
|  | EXPECT_FALSE(ssl_errors::AnyNamesUnderName(dns_name_tokens_example, | 
|  | host_name_tokens)); | 
|  | EXPECT_TRUE(ssl_errors::IsCertLikelyFromSameDomain(origin, *example_cert)); | 
|  | } | 
|  |  | 
|  | { | 
|  | GURL origin("https://www.example.com.foo"); | 
|  | std::string www_host; | 
|  | std::vector<std::string> host_name_tokens = base::SplitString( | 
|  | origin.host(), ".", base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL); | 
|  | EXPECT_FALSE( | 
|  | ssl_errors::GetWWWSubDomainMatch(origin, dns_names_example, &www_host)); | 
|  | EXPECT_FALSE(ssl_errors::NameUnderAnyNames(host_name_tokens, | 
|  | dns_name_tokens_example)); | 
|  | EXPECT_FALSE(ssl_errors::AnyNamesUnderName(dns_name_tokens_example, | 
|  | host_name_tokens)); | 
|  | EXPECT_FALSE(ssl_errors::IsCertLikelyFromSameDomain(origin, *example_cert)); | 
|  | } | 
|  |  | 
|  | { | 
|  | GURL origin("https://www.fooexample.com."); | 
|  | std::string www_host; | 
|  | std::vector<std::string> host_name_tokens = base::SplitString( | 
|  | origin.host(), ".", base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL); | 
|  | EXPECT_FALSE( | 
|  | ssl_errors::GetWWWSubDomainMatch(origin, dns_names_example, &www_host)); | 
|  | EXPECT_FALSE(ssl_errors::NameUnderAnyNames(host_name_tokens, | 
|  | dns_name_tokens_example)); | 
|  | EXPECT_FALSE(ssl_errors::AnyNamesUnderName(dns_name_tokens_example, | 
|  | host_name_tokens)); | 
|  | EXPECT_FALSE(ssl_errors::IsCertLikelyFromSameDomain(origin, *example_cert)); | 
|  | } | 
|  |  | 
|  | // Ensure that a certificate with no SubjectAltName does not fall back to | 
|  | // the Subject CN when evaluating hostnames. | 
|  | { | 
|  | scoped_refptr<net::X509Certificate> google_cert( | 
|  | net::X509Certificate::CreateFromBytes( | 
|  | reinterpret_cast<const char*>(google_der), sizeof(google_der))); | 
|  | ASSERT_TRUE(google_cert); | 
|  |  | 
|  | GURL origin("https://google.com"); | 
|  |  | 
|  | base::HistogramTester histograms; | 
|  | ssl_errors::RecordUMAStatistics(true, base::Time::NowFromSystemTime(), | 
|  | origin, net::ERR_CERT_COMMON_NAME_INVALID, | 
|  | *google_cert); | 
|  |  | 
|  | // Verify that we recorded only NO_SUBJECT_ALT_NAME and no other causes. | 
|  | histograms.ExpectUniqueSample(kSslErrorCauseHistogram, | 
|  | ssl_errors::NO_SUBJECT_ALT_NAME, 1); | 
|  | } | 
|  |  | 
|  | { | 
|  | scoped_refptr<net::X509Certificate> webkit_cert( | 
|  | net::X509Certificate::CreateFromBytes( | 
|  | reinterpret_cast<const char*>(webkit_der), sizeof(webkit_der))); | 
|  | ASSERT_TRUE(webkit_cert); | 
|  | std::vector<std::string> dns_names_webkit; | 
|  | webkit_cert->GetSubjectAltName(&dns_names_webkit, nullptr); | 
|  | ASSERT_THAT(dns_names_webkit, ElementsAre("*.webkit.org", "webkit.org")); | 
|  | std::vector<std::string> hostname_tokens_webkit_0 = | 
|  | ssl_errors::Tokenize(dns_names_webkit[0]); | 
|  | ASSERT_THAT(hostname_tokens_webkit_0, ElementsAre("*", "webkit", "org")); | 
|  | std::vector<std::string> hostname_tokens_webkit_1 = | 
|  | ssl_errors::Tokenize(dns_names_webkit[1]); | 
|  | ASSERT_THAT(hostname_tokens_webkit_1, ElementsAre("webkit", "org")); | 
|  | std::vector<std::vector<std::string>> dns_name_tokens_webkit; | 
|  | dns_name_tokens_webkit.push_back(hostname_tokens_webkit_0); | 
|  | dns_name_tokens_webkit.push_back(hostname_tokens_webkit_1); | 
|  | ASSERT_EQ(2u, dns_name_tokens_webkit.size()); | 
|  | GURL origin("https://a.b.webkit.org"); | 
|  | std::string www_host; | 
|  | std::vector<std::string> host_name_tokens = base::SplitString( | 
|  | origin.host(), ".", base::KEEP_WHITESPACE, base::SPLIT_WANT_ALL); | 
|  | EXPECT_FALSE( | 
|  | ssl_errors::GetWWWSubDomainMatch(origin, dns_names_webkit, &www_host)); | 
|  | EXPECT_FALSE(ssl_errors::NameUnderAnyNames(host_name_tokens, | 
|  | dns_name_tokens_webkit)); | 
|  | EXPECT_FALSE(ssl_errors::AnyNamesUnderName(dns_name_tokens_webkit, | 
|  | host_name_tokens)); | 
|  | EXPECT_TRUE(ssl_errors::IsSubDomainOutsideWildcard(origin, *webkit_cert)); | 
|  | EXPECT_FALSE( | 
|  | ssl_errors::IsCertLikelyFromMultiTenantHosting(origin, *webkit_cert)); | 
|  | EXPECT_TRUE(ssl_errors::IsCertLikelyFromSameDomain(origin, *webkit_cert)); | 
|  | } | 
|  | } | 
|  |  | 
|  | TEST_F(SSLErrorClassificationTest, TestHostNameHasKnownTLD) { | 
|  | EXPECT_TRUE(ssl_errors::HostNameHasKnownTLD("www.google.com")); | 
|  | EXPECT_TRUE(ssl_errors::HostNameHasKnownTLD("b.appspot.com")); | 
|  | EXPECT_FALSE(ssl_errors::HostNameHasKnownTLD("a.private")); | 
|  | } | 
|  |  | 
|  | TEST_F(SSLErrorClassificationTest, TestPrivateURL) { | 
|  | EXPECT_FALSE(ssl_errors::IsHostnameNonUniqueOrDotless("www.foogoogle.com.")); | 
|  | EXPECT_TRUE(ssl_errors::IsHostnameNonUniqueOrDotless("go")); | 
|  | EXPECT_TRUE(ssl_errors::IsHostnameNonUniqueOrDotless("172.17.108.108")); | 
|  | EXPECT_TRUE(ssl_errors::IsHostnameNonUniqueOrDotless("foo.blah")); | 
|  | } | 
|  |  | 
|  | TEST_F(SSLErrorClassificationTest, LevenshteinDistance) { | 
|  | EXPECT_EQ(0u, ssl_errors::GetLevenshteinDistance("banana", "banana")); | 
|  |  | 
|  | EXPECT_EQ(2u, ssl_errors::GetLevenshteinDistance("ab", "ba")); | 
|  | EXPECT_EQ(2u, ssl_errors::GetLevenshteinDistance("ba", "ab")); | 
|  |  | 
|  | EXPECT_EQ(2u, ssl_errors::GetLevenshteinDistance("ananas", "banana")); | 
|  | EXPECT_EQ(2u, ssl_errors::GetLevenshteinDistance("banana", "ananas")); | 
|  |  | 
|  | EXPECT_EQ(2u, ssl_errors::GetLevenshteinDistance("unclear", "nuclear")); | 
|  | EXPECT_EQ(2u, ssl_errors::GetLevenshteinDistance("nuclear", "unclear")); | 
|  |  | 
|  | EXPECT_EQ(3u, ssl_errors::GetLevenshteinDistance("chrome", "chromium")); | 
|  | EXPECT_EQ(3u, ssl_errors::GetLevenshteinDistance("chromium", "chrome")); | 
|  |  | 
|  | EXPECT_EQ(4u, ssl_errors::GetLevenshteinDistance("", "abcd")); | 
|  | EXPECT_EQ(4u, ssl_errors::GetLevenshteinDistance("abcd", "")); | 
|  |  | 
|  | EXPECT_EQ(4u, ssl_errors::GetLevenshteinDistance("xxx", "xxxxxxx")); | 
|  | EXPECT_EQ(4u, ssl_errors::GetLevenshteinDistance("xxxxxxx", "xxx")); | 
|  |  | 
|  | EXPECT_EQ(7u, ssl_errors::GetLevenshteinDistance("yyy", "xxxxxxx")); | 
|  | EXPECT_EQ(7u, ssl_errors::GetLevenshteinDistance("xxxxxxx", "yyy")); | 
|  | } | 
|  |  | 
|  | TEST_F(SSLErrorClassificationTest, GetClockState) { | 
|  | // This test aims to obtain all possible return values of | 
|  | // |GetClockState|. | 
|  | const char kBuildTimeHistogram[] = "interstitial.ssl.clockstate.build_time"; | 
|  | base::HistogramTester histograms; | 
|  | histograms.ExpectTotalCount(kBuildTimeHistogram, 0); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 0); | 
|  | TestingPrefServiceSimple pref_service; | 
|  | network_time::NetworkTimeTracker::RegisterPrefs(pref_service.registry()); | 
|  | network_time::NetworkTimeTracker network_time_tracker( | 
|  | std::make_unique<base::DefaultClock>(), | 
|  | std::make_unique<base::DefaultTickClock>(), &pref_service, | 
|  | base::MakeRefCounted<network::WeakWrapperSharedURLLoaderFactory>( | 
|  | &test_url_loader_factory_)); | 
|  |  | 
|  | ssl_errors::SetBuildTimeForTesting(base::Time::Now()); | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_UNKNOWN, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kBuildTimeHistogram, 1); | 
|  | histograms.ExpectBucketCount(kBuildTimeHistogram, | 
|  | ssl_errors::ClockState::CLOCK_STATE_UNKNOWN, 1); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 1); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_NO_SYNC_ATTEMPT, 1); | 
|  |  | 
|  | ssl_errors::SetBuildTimeForTesting(base::Time::Now() - | 
|  | base::TimeDelta::FromDays(367)); | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_FUTURE, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kBuildTimeHistogram, 2); | 
|  | histograms.ExpectBucketCount(kBuildTimeHistogram, | 
|  | ssl_errors::ClockState::CLOCK_STATE_FUTURE, 1); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 2); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_NO_SYNC_ATTEMPT, 2); | 
|  |  | 
|  | ssl_errors::SetBuildTimeForTesting(base::Time::Now() + | 
|  | base::TimeDelta::FromDays(3)); | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_PAST, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kBuildTimeHistogram, 3); | 
|  | histograms.ExpectBucketCount(kBuildTimeHistogram, | 
|  | ssl_errors::ClockState::CLOCK_STATE_FUTURE, 1); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 3); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_NO_SYNC_ATTEMPT, 3); | 
|  |  | 
|  | // Intentionally leave the build time alone.  It should be ignored | 
|  | // in favor of network time. | 
|  | network_time_tracker.UpdateNetworkTime( | 
|  | base::Time::Now() + base::TimeDelta::FromHours(1), | 
|  | base::TimeDelta::FromSeconds(1),         // resolution | 
|  | base::TimeDelta::FromMilliseconds(250),  // latency | 
|  | base::TimeTicks::Now());                 // posting time | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_PAST, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kBuildTimeHistogram, 4); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 4); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, ssl_errors::NETWORK_CLOCK_STATE_CLOCK_IN_PAST, 1); | 
|  |  | 
|  | network_time_tracker.UpdateNetworkTime( | 
|  | base::Time::Now() - base::TimeDelta::FromHours(1), | 
|  | base::TimeDelta::FromSeconds(1),         // resolution | 
|  | base::TimeDelta::FromMilliseconds(250),  // latency | 
|  | base::TimeTicks::Now());                 // posting time | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_FUTURE, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kBuildTimeHistogram, 5); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 5); | 
|  | histograms.ExpectBucketCount(kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_CLOCK_IN_FUTURE, | 
|  | 1); | 
|  |  | 
|  | network_time_tracker.UpdateNetworkTime( | 
|  | base::Time::Now(), | 
|  | base::TimeDelta::FromSeconds(1),         // resolution | 
|  | base::TimeDelta::FromMilliseconds(250),  // latency | 
|  | base::TimeTicks::Now());                 // posting time | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_OK, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kBuildTimeHistogram, 6); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 6); | 
|  | histograms.ExpectBucketCount(kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_OK, 1); | 
|  |  | 
|  | // Now clear the network time.  The build time should reassert | 
|  | // itself. | 
|  | network_time_tracker.UpdateNetworkTime( | 
|  | base::Time(), | 
|  | base::TimeDelta::FromSeconds(1),         // resolution | 
|  | base::TimeDelta::FromMilliseconds(250),  // latency | 
|  | base::TimeTicks::Now());                 // posting time | 
|  | ssl_errors::SetBuildTimeForTesting(base::Time::Now() + | 
|  | base::TimeDelta::FromDays(3)); | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_PAST, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  |  | 
|  | // Now set the build time to something reasonable.  We should be | 
|  | // back to the know-nothing state. | 
|  | ssl_errors::SetBuildTimeForTesting(base::Time::Now()); | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_UNKNOWN, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | } | 
|  |  | 
|  | // Tests that all possible NetworkClockState histogram values are recorded | 
|  | // appropriately. | 
|  | TEST_F(SSLErrorClassificationTest, NetworkClockStateHistogram) { | 
|  | base::test::ScopedTaskEnvironment task_environment( | 
|  | base::test::ScopedTaskEnvironment::MainThreadType::IO); | 
|  |  | 
|  | scoped_refptr<network::TestSharedURLLoaderFactory> shared_url_loader_factory = | 
|  | base::MakeRefCounted<network::TestSharedURLLoaderFactory>(); | 
|  |  | 
|  | net::EmbeddedTestServer test_server; | 
|  | ASSERT_TRUE(test_server.InitializeAndListen()); | 
|  |  | 
|  | base::HistogramTester histograms; | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 0); | 
|  | TestingPrefServiceSimple pref_service; | 
|  | network_time::NetworkTimeTracker::RegisterPrefs(pref_service.registry()); | 
|  | base::SimpleTestTickClock* tick_clock = new base::SimpleTestTickClock; | 
|  | base::SimpleTestClock* clock = new base::SimpleTestClock; | 
|  | // Do this to be sure that |is_null| returns false. | 
|  | clock->Advance(base::TimeDelta::FromDays(111)); | 
|  | tick_clock->Advance(base::TimeDelta::FromDays(222)); | 
|  |  | 
|  | network_time::NetworkTimeTracker network_time_tracker( | 
|  | std::unique_ptr<base::Clock>(clock), | 
|  | std::unique_ptr<const base::TickClock>(tick_clock), &pref_service, | 
|  | shared_url_loader_factory); | 
|  | field_trial_test()->SetNetworkQueriesWithVariationsService( | 
|  | true, 0.0, | 
|  | network_time::NetworkTimeTracker::FETCHES_IN_BACKGROUND_AND_ON_DEMAND); | 
|  |  | 
|  | // No sync attempt. | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_UNKNOWN, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 1); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_NO_SYNC_ATTEMPT, 1); | 
|  |  | 
|  | // First sync attempt is pending. | 
|  | test_server.RegisterRequestHandler(base::Bind(&NetworkErrorResponseHandler)); | 
|  | test_server.StartAcceptingConnections(); | 
|  | EXPECT_TRUE(network_time_tracker.QueryTimeServiceForTesting()); | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_UNKNOWN, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 2); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_FIRST_SYNC_PENDING, 1); | 
|  | network_time_tracker.WaitForFetchForTesting(123123123); | 
|  |  | 
|  | // No successful sync. | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_UNKNOWN, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 3); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_NO_SUCCESSFUL_SYNC, 1); | 
|  |  | 
|  | // Subsequent sync attempt is pending. | 
|  | EXPECT_TRUE(network_time_tracker.QueryTimeServiceForTesting()); | 
|  | EXPECT_EQ( | 
|  | ssl_errors::ClockState::CLOCK_STATE_UNKNOWN, | 
|  | ssl_errors::GetClockState(base::Time::Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 4); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_SUBSEQUENT_SYNC_PENDING, 1); | 
|  | network_time_tracker.WaitForFetchForTesting(123123123); | 
|  |  | 
|  | // System clock is correct. | 
|  | network_time_tracker.UpdateNetworkTime( | 
|  | clock->Now(), | 
|  | base::TimeDelta::FromSeconds(1),         // resolution | 
|  | base::TimeDelta::FromMilliseconds(250),  // latency | 
|  | tick_clock->NowTicks());                 // posting time | 
|  | EXPECT_EQ(ssl_errors::ClockState::CLOCK_STATE_OK, | 
|  | ssl_errors::GetClockState(clock->Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 5); | 
|  | histograms.ExpectBucketCount(kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_OK, 1); | 
|  |  | 
|  | // System clock is in the past. | 
|  | network_time_tracker.UpdateNetworkTime( | 
|  | clock->Now() + base::TimeDelta::FromHours(1), | 
|  | base::TimeDelta::FromSeconds(1),         // resolution | 
|  | base::TimeDelta::FromMilliseconds(250),  // latency | 
|  | tick_clock->NowTicks());                 // posting time | 
|  | EXPECT_EQ(ssl_errors::ClockState::CLOCK_STATE_PAST, | 
|  | ssl_errors::GetClockState(clock->Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 6); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, ssl_errors::NETWORK_CLOCK_STATE_CLOCK_IN_PAST, 1); | 
|  |  | 
|  | // System clock is in the future. | 
|  | network_time_tracker.UpdateNetworkTime( | 
|  | clock->Now() - base::TimeDelta::FromHours(1), | 
|  | base::TimeDelta::FromSeconds(1),         // resolution | 
|  | base::TimeDelta::FromMilliseconds(250),  // latency | 
|  | tick_clock->NowTicks());                 // posting time | 
|  | EXPECT_EQ(ssl_errors::ClockState::CLOCK_STATE_FUTURE, | 
|  | ssl_errors::GetClockState(clock->Now(), &network_time_tracker)); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 7); | 
|  | histograms.ExpectBucketCount(kNetworkTimeHistogram, | 
|  | ssl_errors::NETWORK_CLOCK_STATE_CLOCK_IN_FUTURE, | 
|  | 1); | 
|  |  | 
|  | // Sync has been lost. | 
|  | tick_clock->Advance(base::TimeDelta::FromSeconds(1)); | 
|  | clock->Advance(base::TimeDelta::FromDays(1)); | 
|  | // GetClockState() will fall back to the build time heuristic. | 
|  | ssl_errors::GetClockState(clock->Now(), &network_time_tracker); | 
|  | histograms.ExpectTotalCount(kNetworkTimeHistogram, 8); | 
|  | histograms.ExpectBucketCount( | 
|  | kNetworkTimeHistogram, ssl_errors::NETWORK_CLOCK_STATE_UNKNOWN_SYNC_LOST, | 
|  | 1); | 
|  | } |