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// Copyright 2011 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/proxy_config/pref_proxy_config_tracker_impl.h"
#include <memory>
#include <string>
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/memory/raw_ptr.h"
#include "base/run_loop.h"
#include "base/task/single_thread_task_runner.h"
#include "base/test/task_environment.h"
#include "build/buildflag.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/testing_pref_service.h"
#include "components/proxy_config/proxy_config_dictionary.h"
#include "components/proxy_config/proxy_config_pref_names.h"
#include "net/base/proxy_chain.h"
#include "net/base/proxy_server.h"
#include "net/base/proxy_string_util.h"
#include "net/net_buildflags.h"
#include "net/proxy_resolution/proxy_info.h"
#include "net/proxy_resolution/proxy_list.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "url/gurl.h"
using testing::_;
using testing::Mock;
namespace {
const char kFixedPacUrl[] = "http://chromium.org/fixed_pac_url";
// Testing proxy config service that allows us to fire notifications at will.
class TestProxyConfigService : public net::ProxyConfigService {
public:
TestProxyConfigService(const net::ProxyConfigWithAnnotation& config,
ConfigAvailability availability)
: config_(config), availability_(availability) {}
void SetProxyConfig(const net::ProxyConfig config,
ConfigAvailability availability) {
config_ =
net::ProxyConfigWithAnnotation(config, TRAFFIC_ANNOTATION_FOR_TESTS);
availability_ = availability;
for (net::ProxyConfigService::Observer& observer : observers_) {
observer.OnProxyConfigChanged(config_, availability);
}
}
private:
void AddObserver(net::ProxyConfigService::Observer* observer) override {
observers_.AddObserver(observer);
}
void RemoveObserver(net::ProxyConfigService::Observer* observer) override {
observers_.RemoveObserver(observer);
}
net::ProxyConfigService::ConfigAvailability GetLatestProxyConfig(
net::ProxyConfigWithAnnotation* config) override {
*config = config_;
return availability_;
}
net::ProxyConfigWithAnnotation config_;
ConfigAvailability availability_;
base::ObserverList<net::ProxyConfigService::Observer, true>::Unchecked
observers_;
};
// A mock observer for capturing callbacks.
class MockObserver : public net::ProxyConfigService::Observer {
public:
MOCK_METHOD2(OnProxyConfigChanged,
void(const net::ProxyConfigWithAnnotation&,
net::ProxyConfigService::ConfigAvailability));
};
class PrefProxyConfigTrackerImplTest : public testing::Test {
protected:
PrefProxyConfigTrackerImplTest() = default;
// Initializes the proxy config service. The delegate config service has the
// specified initial config availability.
void InitConfigService(net::ProxyConfigService::ConfigAvailability
delegate_config_availability) {
pref_service_ = std::make_unique<TestingPrefServiceSimple>();
PrefProxyConfigTrackerImpl::RegisterPrefs(pref_service_->registry());
net::ProxyConfig proxy_config;
proxy_config.set_pac_url(GURL(kFixedPacUrl));
fixed_config_ = net::ProxyConfigWithAnnotation(
proxy_config, TRAFFIC_ANNOTATION_FOR_TESTS);
delegate_service_ =
new TestProxyConfigService(fixed_config_, delegate_config_availability);
proxy_config_tracker_ = std::make_unique<PrefProxyConfigTrackerImpl>(
pref_service_.get(), base::SingleThreadTaskRunner::GetCurrentDefault());
proxy_config_service_ =
proxy_config_tracker_->CreateTrackingProxyConfigService(
std::unique_ptr<net::ProxyConfigService>(delegate_service_));
}
~PrefProxyConfigTrackerImplTest() override {
proxy_config_tracker_->DetachFromPrefService();
base::RunLoop().RunUntilIdle();
proxy_config_tracker_.reset();
proxy_config_service_.reset();
}
base::test::SingleThreadTaskEnvironment task_environment_;
std::unique_ptr<TestingPrefServiceSimple> pref_service_;
raw_ptr<TestProxyConfigService, DanglingUntriaged> delegate_service_; // weak
std::unique_ptr<net::ProxyConfigService> proxy_config_service_;
net::ProxyConfigWithAnnotation fixed_config_;
std::unique_ptr<PrefProxyConfigTrackerImpl> proxy_config_tracker_;
};
TEST_F(PrefProxyConfigTrackerImplTest, BaseConfiguration) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_EQ(GURL(kFixedPacUrl), actual_config.value().pac_url());
}
TEST_F(PrefProxyConfigTrackerImplTest, DynamicPrefOverrides) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateFixedServers(
"http://example.com:3128", std::string())));
base::RunLoop().RunUntilIdle();
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_FALSE(actual_config.value().auto_detect());
EXPECT_EQ(net::ProxyConfig::ProxyRules::Type::PROXY_LIST,
actual_config.value().proxy_rules().type);
EXPECT_EQ(actual_config.value().proxy_rules().single_proxies.First(),
net::ProxyUriToProxyChain("http://example.com:3128",
net::ProxyServer::SCHEME_HTTP));
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().auto_detect());
}
#if BUILDFLAG(ENABLE_BRACKETED_PROXY_URIS)
TEST_F(PrefProxyConfigTrackerImplTest, DynamicPrefOverridesSingleBracketedUri) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateFixedServers(
"[http://example.com:3128]", std::string())));
base::RunLoop().RunUntilIdle();
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_FALSE(actual_config.value().auto_detect());
EXPECT_EQ(net::ProxyConfig::ProxyRules::Type::PROXY_LIST,
actual_config.value().proxy_rules().type);
EXPECT_EQ(actual_config.value().proxy_rules().single_proxies.First(),
net::ProxyUriToProxyChain("http://example.com:3128",
net::ProxyServer::SCHEME_HTTP));
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().auto_detect());
}
TEST_F(PrefProxyConfigTrackerImplTest, DynamicPrefOverridesMultiBracketedUris) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateFixedServers(
"[https://foopy:443 https://hoopy:443]", std::string())));
base::RunLoop().RunUntilIdle();
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_FALSE(actual_config.value().auto_detect());
EXPECT_EQ(net::ProxyConfig::ProxyRules::Type::PROXY_LIST,
actual_config.value().proxy_rules().type);
// Build expected proxy chain for multi-proxy chain.
net::ProxyChain expected_proxy_chain(
{net::ProxyUriToProxyServer("https://foopy:443",
net::ProxyServer::SCHEME_HTTPS),
net::ProxyUriToProxyServer("https://hoopy:443",
net::ProxyServer::SCHEME_HTTPS)});
EXPECT_EQ(actual_config.value().proxy_rules().single_proxies.First(),
expected_proxy_chain);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().auto_detect());
}
#else
// Ensure that bracketed URIs are not parsed in release builds.
TEST_F(PrefProxyConfigTrackerImplTest,
DynamicPrefOverridesBracketedUriNotValidInReleaseBuilds) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateFixedServers(
"[http://example.com:3128]", std::string())));
base::RunLoop().RunUntilIdle();
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_FALSE(actual_config.value().auto_detect());
EXPECT_EQ(net::ProxyConfig::ProxyRules::Type::PROXY_LIST,
actual_config.value().proxy_rules().type);
// ProxyList should be empty b/c brackets in URI are invalid format.
EXPECT_TRUE(actual_config.value().proxy_rules().single_proxies.IsEmpty());
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().auto_detect());
}
#endif
#if BUILDFLAG(ENABLE_QUIC_PROXY_SUPPORT)
// Ensure that QUIC proxies are correctly parsed when the build flag for QUIC
// proxy support, `ENABLE_QUIC_PROXY_SUPPORT`, is enabled.
TEST_F(PrefProxyConfigTrackerImplTest,
DynamicPrefOverridesQuicProxySupportValidWhenBuildFlagEnabled) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateFixedServers(
"quic://foopy:443", std::string())));
base::RunLoop().RunUntilIdle();
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_FALSE(actual_config.value().auto_detect());
EXPECT_EQ(net::ProxyConfig::ProxyRules::Type::PROXY_LIST,
actual_config.value().proxy_rules().type);
EXPECT_EQ(actual_config.value().proxy_rules().single_proxies.First(),
net::ProxyUriToProxyChain("quic://foopy:443",
net::ProxyServer::SCHEME_HTTP,
/*is_quic_allowed=*/true));
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().auto_detect());
}
#else
// Ensure that QUIC proxy support is not valid/parsed when the build flag for
// QUIC support, `ENABLE_QUIC_PROXY_SUPPORT`, is disabled.
TEST_F(PrefProxyConfigTrackerImplTest,
DynamicPrefOverridesQuicProxySupportNotValidWhenBuildFlagDisabled) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateFixedServers(
"quic://foopy:443", std::string())));
base::RunLoop().RunUntilIdle();
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_FALSE(actual_config.value().auto_detect());
EXPECT_EQ(net::ProxyConfig::ProxyRules::Type::PROXY_LIST,
actual_config.value().proxy_rules().type);
// ProxyList should be empty b/c brackets in URI are invalid format.
EXPECT_TRUE(actual_config.value().proxy_rules().single_proxies.IsEmpty());
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
base::RunLoop().RunUntilIdle();
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().auto_detect());
}
#endif // BUILDFLAG(ENABLE_QUIC_PROXY_SUPPORT)
// Compares proxy configurations, but allows different sources.
MATCHER_P(ProxyConfigMatches, config, "") {
net::ProxyConfig reference(config);
return reference.Equals(arg.value());
}
TEST_F(PrefProxyConfigTrackerImplTest, Observers) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
const net::ProxyConfigService::ConfigAvailability CONFIG_VALID =
net::ProxyConfigService::CONFIG_VALID;
MockObserver observer;
proxy_config_service_->AddObserver(&observer);
// Firing the observers in the delegate should trigger a notification.
net::ProxyConfig config2;
config2.set_auto_detect(true);
EXPECT_CALL(observer,
OnProxyConfigChanged(ProxyConfigMatches(config2), CONFIG_VALID))
.Times(1);
delegate_service_->SetProxyConfig(config2, CONFIG_VALID);
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
// Override configuration, this should trigger a notification.
net::ProxyConfig pref_config;
pref_config.set_pac_url(GURL(kFixedPacUrl));
EXPECT_CALL(observer, OnProxyConfigChanged(ProxyConfigMatches(pref_config),
CONFIG_VALID))
.Times(1);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(
ProxyConfigDictionary::CreatePacScript(kFixedPacUrl, false)));
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
// Since there are pref overrides, delegate changes should be ignored.
net::ProxyConfig config3;
config3.proxy_rules().ParseFromString("http=config3:80");
EXPECT_CALL(observer, OnProxyConfigChanged(_, _)).Times(0);
net::ProxyConfig fixed_proxy_config = fixed_config_.value();
fixed_proxy_config.set_auto_detect(true);
fixed_config_ = net::ProxyConfigWithAnnotation(fixed_proxy_config,
TRAFFIC_ANNOTATION_FOR_TESTS);
delegate_service_->SetProxyConfig(config3, CONFIG_VALID);
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
// Clear the override should switch back to the fixed configuration.
EXPECT_CALL(observer,
OnProxyConfigChanged(ProxyConfigMatches(config3), CONFIG_VALID))
.Times(1);
pref_service_->RemoveManagedPref(proxy_config::prefs::kProxy);
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
// Delegate service notifications should show up again.
net::ProxyConfig config4;
config4.proxy_rules().ParseFromString("socks:config4");
EXPECT_CALL(observer,
OnProxyConfigChanged(ProxyConfigMatches(config4), CONFIG_VALID))
.Times(1);
delegate_service_->SetProxyConfig(config4, CONFIG_VALID);
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
proxy_config_service_->RemoveObserver(&observer);
}
TEST_F(PrefProxyConfigTrackerImplTest, Fallback) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
const net::ProxyConfigService::ConfigAvailability CONFIG_VALID =
net::ProxyConfigService::CONFIG_VALID;
MockObserver observer;
net::ProxyConfigWithAnnotation actual_config;
delegate_service_->SetProxyConfig(net::ProxyConfig::CreateDirect(),
net::ProxyConfigService::CONFIG_UNSET);
proxy_config_service_->AddObserver(&observer);
// Prepare test data.
net::ProxyConfig recommended_config = net::ProxyConfig::CreateAutoDetect();
net::ProxyConfig user_config =
net::ProxyConfig::CreateFromCustomPacURL(GURL(kFixedPacUrl));
// Set a recommended pref.
EXPECT_CALL(observer,
OnProxyConfigChanged(ProxyConfigMatches(recommended_config),
CONFIG_VALID))
.Times(1);
pref_service_->SetRecommendedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
EXPECT_EQ(CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().Equals(recommended_config));
// Override in user prefs.
EXPECT_CALL(observer, OnProxyConfigChanged(ProxyConfigMatches(user_config),
CONFIG_VALID))
.Times(1);
pref_service_->SetManagedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(
ProxyConfigDictionary::CreatePacScript(kFixedPacUrl, false)));
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
EXPECT_EQ(CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().Equals(user_config));
// Go back to recommended pref.
EXPECT_CALL(observer,
OnProxyConfigChanged(ProxyConfigMatches(recommended_config),
CONFIG_VALID))
.Times(1);
pref_service_->RemoveManagedPref(proxy_config::prefs::kProxy);
base::RunLoop().RunUntilIdle();
Mock::VerifyAndClearExpectations(&observer);
EXPECT_EQ(CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_TRUE(actual_config.value().Equals(recommended_config));
proxy_config_service_->RemoveObserver(&observer);
}
TEST_F(PrefProxyConfigTrackerImplTest, ExplicitSystemSettings) {
InitConfigService(net::ProxyConfigService::CONFIG_VALID);
pref_service_->SetRecommendedPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateAutoDetect()));
pref_service_->SetUserPref(
proxy_config::prefs::kProxy,
std::make_unique<base::Value>(ProxyConfigDictionary::CreateSystem()));
base::RunLoop().RunUntilIdle();
// Test if we actually use the system setting, which is |kFixedPacUrl|.
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_EQ(GURL(kFixedPacUrl), actual_config.value().pac_url());
}
// Test the case where the delegate service gets a config only after the service
// is created.
TEST_F(PrefProxyConfigTrackerImplTest, DelegateConfigServiceGetsConfigLate) {
InitConfigService(net::ProxyConfigService::CONFIG_PENDING);
testing::StrictMock<MockObserver> observer;
proxy_config_service_->AddObserver(&observer);
net::ProxyConfigWithAnnotation actual_config;
EXPECT_EQ(net::ProxyConfigService::CONFIG_PENDING,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
// When the delegate service gets the config, the other service should update
// its observers.
EXPECT_CALL(observer,
OnProxyConfigChanged(ProxyConfigMatches(fixed_config_.value()),
net::ProxyConfigService::CONFIG_VALID))
.Times(1);
delegate_service_->SetProxyConfig(fixed_config_.value(),
net::ProxyConfigService::CONFIG_VALID);
// Since no prefs were set, should just use the delegated config service's
// settings.
EXPECT_EQ(net::ProxyConfigService::CONFIG_VALID,
proxy_config_service_->GetLatestProxyConfig(&actual_config));
EXPECT_EQ(GURL(kFixedPacUrl), actual_config.value().pac_url());
proxy_config_service_->RemoveObserver(&observer);
}
} // namespace
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