blob: c0f4afe010a11249e1337e0541cd32a8abcf54de [file] [log] [blame]
// Copyright (c) 2012 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 "chrome/browser/io_thread.h"
#include <utility>
#include <vector>
#include "base/base64.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/command_line.h"
#include "base/compiler_specific.h"
#include "base/debug/leak_tracker.h"
#include "base/environment.h"
#include "base/files/file_path.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/memory/ptr_util.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_macros.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "base/threading/sequenced_worker_pool.h"
#include "base/threading/thread.h"
#include "base/threading/worker_pool.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/data_usage/tab_id_annotator.h"
#include "chrome/browser/net/async_dns_field_trial.h"
#include "chrome/browser/net/chrome_network_delegate.h"
#include "chrome/browser/net/dns_probe_service.h"
#include "chrome/browser/net/proxy_service_factory.h"
#include "chrome/browser/net/sth_distributor_provider.h"
#include "chrome/common/channel_info.h"
#include "chrome/common/chrome_content_client.h"
#include "chrome/common/chrome_switches.h"
#include "chrome/common/pref_names.h"
#include "components/certificate_transparency/tree_state_tracker.h"
#include "components/data_reduction_proxy/core/browser/data_reduction_proxy_prefs.h"
#include "components/data_usage/core/data_use_aggregator.h"
#include "components/data_usage/core/data_use_amortizer.h"
#include "components/data_usage/core/data_use_annotator.h"
#include "components/metrics/metrics_service.h"
#include "components/net_log/chrome_net_log.h"
#include "components/network_session_configurator/network_session_configurator.h"
#include "components/policy/core/common/policy_service.h"
#include "components/policy/policy_constants.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/pref_service.h"
#include "components/proxy_config/pref_proxy_config_tracker.h"
#include "components/variations/variations_associated_data.h"
#include "components/version_info/version_info.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/cookie_store_factory.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/user_agent.h"
#include "net/base/host_mapping_rules.h"
#include "net/base/logging_network_change_observer.h"
#include "net/base/sdch_manager.h"
#include "net/cert/caching_cert_verifier.h"
#include "net/cert/cert_verifier.h"
#include "net/cert/cert_verify_proc.h"
#include "net/cert/ct_known_logs.h"
#include "net/cert/ct_log_verifier.h"
#include "net/cert/ct_policy_enforcer.h"
#include "net/cert/ct_verifier.h"
#include "net/cert/multi_log_ct_verifier.h"
#include "net/cert/multi_threaded_cert_verifier.h"
#include "net/cert/sth_distributor.h"
#include "net/cert/sth_observer.h"
#include "net/cookies/cookie_store.h"
#include "net/dns/host_cache.h"
#include "net/dns/host_resolver.h"
#include "net/dns/mapped_host_resolver.h"
#include "net/ftp/ftp_network_layer.h"
#include "net/http/http_auth_filter.h"
#include "net/http/http_auth_handler_factory.h"
#include "net/http/http_auth_preferences.h"
#include "net/http/http_network_layer.h"
#include "net/http/http_server_properties_impl.h"
#include "net/nqe/external_estimate_provider.h"
#include "net/nqe/network_quality_estimator.h"
#include "net/proxy/proxy_config_service.h"
#include "net/proxy/proxy_script_fetcher_impl.h"
#include "net/proxy/proxy_service.h"
#include "net/socket/ssl_client_socket.h"
#include "net/socket/tcp_client_socket.h"
#include "net/ssl/channel_id_service.h"
#include "net/ssl/default_channel_id_store.h"
#include "net/url_request/data_protocol_handler.h"
#include "net/url_request/file_protocol_handler.h"
#include "net/url_request/ftp_protocol_handler.h"
#include "net/url_request/static_http_user_agent_settings.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_builder.h"
#include "net/url_request/url_request_context_getter.h"
#include "net/url_request/url_request_job_factory_impl.h"
#include "url/url_constants.h"
#if defined(ENABLE_EXTENSIONS)
#include "chrome/browser/extensions/event_router_forwarder.h"
#endif
#if defined(USE_NSS_CERTS)
#include "net/cert_net/nss_ocsp.h"
#endif
#if BUILDFLAG(ANDROID_JAVA_UI)
#include "base/android/build_info.h"
#include "chrome/browser/android/data_usage/external_data_use_observer.h"
#include "chrome/browser/android/net/external_estimate_provider_android.h"
#include "components/data_usage/android/traffic_stats_amortizer.h"
#endif
#if defined(OS_CHROMEOS)
#include "chrome/browser/chromeos/net/cert_verify_proc_chromeos.h"
#include "chromeos/network/host_resolver_impl_chromeos.h"
#endif
#if defined(OS_ANDROID) && defined(ARCH_CPU_ARMEL)
#include <openssl/cpu.h>
#include "crypto/openssl_util.h"
#endif
using content::BrowserThread;
class SafeBrowsingURLRequestContext;
// The IOThread object must outlive any tasks posted to the IO thread before the
// Quit task, so base::Bind() calls are not refcounted.
namespace {
// Field trial for network quality estimator. Seeds RTT and downstream
// throughput observations with values that correspond to the connection type
// determined by the operating system.
const char kNetworkQualityEstimatorFieldTrialName[] = "NetworkQualityEstimator";
#if defined(OS_MACOSX)
void ObserveKeychainEvents() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
net::CertDatabase::GetInstance()->SetMessageLoopForKeychainEvents();
}
#endif
// Gets file path into ssl_keylog_file from command line argument or
// environment variable. Command line argument has priority when
// both specified.
base::FilePath GetSSLKeyLogFile(const base::CommandLine& command_line) {
if (command_line.HasSwitch(switches::kSSLKeyLogFile)) {
base::FilePath path =
command_line.GetSwitchValuePath(switches::kSSLKeyLogFile);
if (!path.empty())
return path;
LOG(WARNING) << "ssl-key-log-file argument missing";
}
std::unique_ptr<base::Environment> env(base::Environment::Create());
std::string path_str;
env->GetVar("SSLKEYLOGFILE", &path_str);
#if defined(OS_WIN)
// base::Environment returns environment variables in UTF-8 on Windows.
return base::FilePath(base::UTF8ToUTF16(path_str));
#else
return base::FilePath(path_str);
#endif
}
// Used for the "system" URLRequestContext.
class SystemURLRequestContext : public net::URLRequestContext {
public:
SystemURLRequestContext() {
#if defined(USE_NSS_CERTS)
net::SetURLRequestContextForNSSHttpIO(this);
#endif
}
private:
~SystemURLRequestContext() override {
AssertNoURLRequests();
#if defined(USE_NSS_CERTS)
net::SetURLRequestContextForNSSHttpIO(NULL);
#endif
}
};
std::unique_ptr<net::HostResolver> CreateGlobalHostResolver(
net::NetLog* net_log) {
TRACE_EVENT0("startup", "IOThread::CreateGlobalHostResolver");
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
net::HostResolver::Options options;
// Use the retry attempts override from the command-line, if any.
if (command_line.HasSwitch(switches::kHostResolverRetryAttempts)) {
std::string s =
command_line.GetSwitchValueASCII(switches::kHostResolverRetryAttempts);
// Parse the switch (it should be a non-negative integer).
int n;
if (base::StringToInt(s, &n) && n >= 0) {
options.max_retry_attempts = static_cast<size_t>(n);
} else {
LOG(ERROR) << "Invalid switch for host resolver retry attempts: " << s;
}
}
std::unique_ptr<net::HostResolver> global_host_resolver;
#if defined OS_CHROMEOS
global_host_resolver =
chromeos::HostResolverImplChromeOS::CreateSystemResolver(options,
net_log);
#else
global_host_resolver =
net::HostResolver::CreateSystemResolver(options, net_log);
#endif
// If hostname remappings were specified on the command-line, layer these
// rules on top of the real host resolver. This allows forwarding all requests
// through a designated test server.
if (!command_line.HasSwitch(switches::kHostResolverRules))
return global_host_resolver;
std::unique_ptr<net::MappedHostResolver> remapped_resolver(
new net::MappedHostResolver(std::move(global_host_resolver)));
remapped_resolver->SetRulesFromString(
command_line.GetSwitchValueASCII(switches::kHostResolverRules));
return std::move(remapped_resolver);
}
int GetSwitchValueAsInt(const base::CommandLine& command_line,
const std::string& switch_name) {
int value;
if (!base::StringToInt(command_line.GetSwitchValueASCII(switch_name),
&value)) {
return 0;
}
return value;
}
} // namespace
class SystemURLRequestContextGetter : public net::URLRequestContextGetter {
public:
explicit SystemURLRequestContextGetter(IOThread* io_thread);
// Implementation for net::UrlRequestContextGetter.
net::URLRequestContext* GetURLRequestContext() override;
scoped_refptr<base::SingleThreadTaskRunner> GetNetworkTaskRunner()
const override;
protected:
~SystemURLRequestContextGetter() override;
private:
IOThread* const io_thread_; // Weak pointer, owned by BrowserProcess.
scoped_refptr<base::SingleThreadTaskRunner> network_task_runner_;
base::debug::LeakTracker<SystemURLRequestContextGetter> leak_tracker_;
};
SystemURLRequestContextGetter::SystemURLRequestContextGetter(
IOThread* io_thread)
: io_thread_(io_thread),
network_task_runner_(
BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)) {}
SystemURLRequestContextGetter::~SystemURLRequestContextGetter() {}
net::URLRequestContext* SystemURLRequestContextGetter::GetURLRequestContext() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(io_thread_->globals()->system_request_context.get());
return io_thread_->globals()->system_request_context.get();
}
scoped_refptr<base::SingleThreadTaskRunner>
SystemURLRequestContextGetter::GetNetworkTaskRunner() const {
return network_task_runner_;
}
IOThread::Globals::
SystemRequestContextLeakChecker::SystemRequestContextLeakChecker(
Globals* globals)
: globals_(globals) {
DCHECK(globals_);
}
IOThread::Globals::
SystemRequestContextLeakChecker::~SystemRequestContextLeakChecker() {
if (globals_->system_request_context.get())
globals_->system_request_context->AssertNoURLRequests();
}
IOThread::Globals::Globals() : system_request_context_leak_checker(this),
enable_brotli(false) {}
IOThread::Globals::~Globals() {}
// |local_state| is passed in explicitly in order to (1) reduce implicit
// dependencies and (2) make IOThread more flexible for testing.
IOThread::IOThread(
PrefService* local_state,
policy::PolicyService* policy_service,
net_log::ChromeNetLog* net_log,
extensions::EventRouterForwarder* extension_event_router_forwarder)
: net_log_(net_log),
#if defined(ENABLE_EXTENSIONS)
extension_event_router_forwarder_(extension_event_router_forwarder),
#endif
globals_(nullptr),
is_quic_allowed_by_policy_(true),
http_09_on_non_default_ports_enabled_(false),
creation_time_(base::TimeTicks::Now()),
weak_factory_(this) {
scoped_refptr<base::SingleThreadTaskRunner> io_thread_proxy =
BrowserThread::GetTaskRunnerForThread(BrowserThread::IO);
auth_schemes_ = local_state->GetString(prefs::kAuthSchemes);
negotiate_disable_cname_lookup_.Init(
prefs::kDisableAuthNegotiateCnameLookup, local_state,
base::Bind(&IOThread::UpdateNegotiateDisableCnameLookup,
base::Unretained(this)));
negotiate_disable_cname_lookup_.MoveToThread(io_thread_proxy);
negotiate_enable_port_.Init(
prefs::kEnableAuthNegotiatePort, local_state,
base::Bind(&IOThread::UpdateNegotiateEnablePort, base::Unretained(this)));
negotiate_enable_port_.MoveToThread(io_thread_proxy);
auth_server_whitelist_.Init(
prefs::kAuthServerWhitelist, local_state,
base::Bind(&IOThread::UpdateServerWhitelist, base::Unretained(this)));
auth_server_whitelist_.MoveToThread(io_thread_proxy);
auth_delegate_whitelist_.Init(
prefs::kAuthNegotiateDelegateWhitelist, local_state,
base::Bind(&IOThread::UpdateDelegateWhitelist, base::Unretained(this)));
auth_delegate_whitelist_.MoveToThread(io_thread_proxy);
#if defined(OS_ANDROID)
auth_android_negotiate_account_type_.Init(
prefs::kAuthAndroidNegotiateAccountType, local_state,
base::Bind(&IOThread::UpdateAndroidAuthNegotiateAccountType,
base::Unretained(this)));
auth_android_negotiate_account_type_.MoveToThread(io_thread_proxy);
#endif
#if defined(OS_POSIX) && !defined(OS_ANDROID)
gssapi_library_name_ = local_state->GetString(prefs::kGSSAPILibraryName);
#endif
pref_proxy_config_tracker_.reset(
ProxyServiceFactory::CreatePrefProxyConfigTrackerOfLocalState(
local_state));
ChromeNetworkDelegate::InitializePrefsOnUIThread(
&system_enable_referrers_,
nullptr,
nullptr,
nullptr,
nullptr,
local_state);
ssl_config_service_manager_.reset(
ssl_config::SSLConfigServiceManager::CreateDefaultManager(
local_state,
BrowserThread::GetTaskRunnerForThread(BrowserThread::IO)));
base::Value* dns_client_enabled_default = new base::FundamentalValue(
chrome_browser_net::ConfigureAsyncDnsFieldTrial());
local_state->SetDefaultPrefValue(prefs::kBuiltInDnsClientEnabled,
dns_client_enabled_default);
chrome_browser_net::LogAsyncDnsPrefSource(
local_state->FindPreference(prefs::kBuiltInDnsClientEnabled));
dns_client_enabled_.Init(prefs::kBuiltInDnsClientEnabled,
local_state,
base::Bind(&IOThread::UpdateDnsClientEnabled,
base::Unretained(this)));
dns_client_enabled_.MoveToThread(io_thread_proxy);
quick_check_enabled_.Init(prefs::kQuickCheckEnabled,
local_state);
quick_check_enabled_.MoveToThread(io_thread_proxy);
pac_https_url_stripping_enabled_.Init(prefs::kPacHttpsUrlStrippingEnabled,
local_state);
pac_https_url_stripping_enabled_.MoveToThread(io_thread_proxy);
const base::Value* value = policy_service->GetPolicies(
policy::PolicyNamespace(policy::POLICY_DOMAIN_CHROME,
std::string())).GetValue(policy::key::kQuicAllowed);
if (value)
value->GetAsBoolean(&is_quic_allowed_by_policy_);
value = policy_service
->GetPolicies(policy::PolicyNamespace(
policy::POLICY_DOMAIN_CHROME, std::string()))
.GetValue(policy::key::kHttp09OnNonDefaultPortsEnabled);
if (value)
value->GetAsBoolean(&http_09_on_non_default_ports_enabled_);
// Some unit tests use IOThread but do not initialize MetricsService. In that
// case it is fine not to have |metrics_data_use_forwarder_|.
if (g_browser_process->metrics_service()) {
// Callback for updating data use prefs should be obtained on UI thread.
metrics_data_use_forwarder_ =
g_browser_process->metrics_service()->GetDataUseForwardingCallback();
}
chrome_browser_net::SetGlobalSTHDistributor(
std::unique_ptr<net::ct::STHDistributor>(new net::ct::STHDistributor()));
BrowserThread::SetDelegate(BrowserThread::IO, this);
}
IOThread::~IOThread() {
// This isn't needed for production code, but in tests, IOThread may
// be multiply constructed.
BrowserThread::SetDelegate(BrowserThread::IO, NULL);
pref_proxy_config_tracker_->DetachFromPrefService();
DCHECK(!globals_);
// Destroy the old distributor to check that the observers list it holds is
// empty.
chrome_browser_net::SetGlobalSTHDistributor(nullptr);
}
IOThread::Globals* IOThread::globals() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
return globals_;
}
void IOThread::SetGlobalsForTesting(Globals* globals) {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!globals || !globals_);
globals_ = globals;
}
net_log::ChromeNetLog* IOThread::net_log() {
return net_log_;
}
void IOThread::ChangedToOnTheRecord() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&IOThread::ChangedToOnTheRecordOnIOThread,
base::Unretained(this)));
}
net::URLRequestContextGetter* IOThread::system_url_request_context_getter() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
if (!system_url_request_context_getter_.get()) {
InitSystemRequestContext();
}
return system_url_request_context_getter_.get();
}
void IOThread::Init() {
TRACE_EVENT0("startup", "IOThread::InitAsync");
DCHECK_CURRENTLY_ON(BrowserThread::IO);
#if defined(USE_NSS_CERTS)
net::SetMessageLoopForNSSHttpIO();
#endif
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
// Export ssl keys if log file specified.
base::FilePath ssl_keylog_file = GetSSLKeyLogFile(command_line);
if (!ssl_keylog_file.empty()) {
net::SSLClientSocket::SetSSLKeyLogFile(
ssl_keylog_file,
BrowserThread::GetTaskRunnerForThread(BrowserThread::FILE));
}
DCHECK(!globals_);
globals_ = new Globals;
// Add an observer that will emit network change events to the ChromeNetLog.
// Assuming NetworkChangeNotifier dispatches in FIFO order, we should be
// logging the network change before other IO thread consumers respond to it.
network_change_observer_.reset(
new net::LoggingNetworkChangeObserver(net_log_));
// Setup the HistogramWatcher to run on the IO thread.
net::NetworkChangeNotifier::InitHistogramWatcher();
#if defined(ENABLE_EXTENSIONS)
globals_->extension_event_router_forwarder =
extension_event_router_forwarder_;
#endif
std::unique_ptr<data_usage::DataUseAmortizer> data_use_amortizer;
#if BUILDFLAG(ANDROID_JAVA_UI)
data_use_amortizer.reset(new data_usage::android::TrafficStatsAmortizer());
#endif
globals_->data_use_aggregator.reset(new data_usage::DataUseAggregator(
std::unique_ptr<data_usage::DataUseAnnotator>(
new chrome_browser_data_usage::TabIdAnnotator()),
std::move(data_use_amortizer)));
std::unique_ptr<ChromeNetworkDelegate> chrome_network_delegate(
new ChromeNetworkDelegate(extension_event_router_forwarder(),
&system_enable_referrers_,
metrics_data_use_forwarder_));
// By default, data usage is considered off the record.
chrome_network_delegate->set_data_use_aggregator(
globals_->data_use_aggregator.get(),
true /* is_data_usage_off_the_record */);
#if BUILDFLAG(ANDROID_JAVA_UI)
globals_->external_data_use_observer.reset(
new chrome::android::ExternalDataUseObserver(
globals_->data_use_aggregator.get(),
BrowserThread::GetTaskRunnerForThread(BrowserThread::IO),
BrowserThread::GetTaskRunnerForThread(BrowserThread::UI)));
#endif
globals_->system_network_delegate = std::move(chrome_network_delegate);
globals_->host_resolver = CreateGlobalHostResolver(net_log_);
std::map<std::string, std::string> network_quality_estimator_params;
variations::GetVariationParams(kNetworkQualityEstimatorFieldTrialName,
&network_quality_estimator_params);
std::unique_ptr<net::ExternalEstimateProvider> external_estimate_provider;
#if BUILDFLAG(ANDROID_JAVA_UI)
external_estimate_provider.reset(
new chrome::android::ExternalEstimateProviderAndroid());
#endif
// Pass ownership.
globals_->network_quality_estimator.reset(new net::NetworkQualityEstimator(
std::move(external_estimate_provider), network_quality_estimator_params));
UpdateDnsClientEnabled();
#if defined(OS_CHROMEOS)
// Creates a CertVerifyProc that doesn't allow any profile-provided certs.
globals_->cert_verifier = base::MakeUnique<net::CachingCertVerifier>(
base::MakeUnique<net::MultiThreadedCertVerifier>(
new chromeos::CertVerifyProcChromeOS()));
#else
globals_->cert_verifier = net::CertVerifier::CreateDefault();
#endif
globals_->transport_security_state.reset(new net::TransportSecurityState());
std::vector<scoped_refptr<const net::CTLogVerifier>> ct_logs(
net::ct::CreateLogVerifiersForKnownLogs());
globals_->ct_logs.assign(ct_logs.begin(), ct_logs.end());
net::MultiLogCTVerifier* ct_verifier = new net::MultiLogCTVerifier();
globals_->cert_transparency_verifier.reset(ct_verifier);
// Add built-in logs
ct_verifier->AddLogs(globals_->ct_logs);
ct_tree_tracker_.reset(
new certificate_transparency::TreeStateTracker(globals_->ct_logs));
// Register the ct_tree_tracker_ as observer for new STHs.
RegisterSTHObserver(ct_tree_tracker_.get());
// Register the ct_tree_tracker_ as observer for verified SCTs.
globals_->cert_transparency_verifier->SetObserver(ct_tree_tracker_.get());
globals_->ct_policy_enforcer.reset(new net::CTPolicyEnforcer());
params_.ct_policy_enforcer = globals_->ct_policy_enforcer.get();
globals_->ssl_config_service = GetSSLConfigService();
CreateDefaultAuthHandlerFactory();
globals_->http_server_properties.reset(new net::HttpServerPropertiesImpl());
// For the ProxyScriptFetcher, we use a direct ProxyService.
globals_->proxy_script_fetcher_proxy_service =
net::ProxyService::CreateDirectWithNetLog(net_log_);
// In-memory cookie store.
globals_->system_cookie_store =
content::CreateCookieStore(content::CookieStoreConfig());
// In-memory channel ID store.
globals_->system_channel_id_service.reset(
new net::ChannelIDService(
new net::DefaultChannelIDStore(NULL),
base::WorkerPool::GetTaskRunner(true)));
globals_->system_cookie_store->SetChannelIDServiceID(
globals_->system_channel_id_service->GetUniqueID());
globals_->dns_probe_service.reset(new chrome_browser_net::DnsProbeService());
globals_->host_mapping_rules.reset(new net::HostMappingRules());
params_.host_mapping_rules = globals_->host_mapping_rules.get();
globals_->http_user_agent_settings.reset(
new net::StaticHttpUserAgentSettings(std::string(), GetUserAgent()));
if (command_line.HasSwitch(switches::kHostRules)) {
TRACE_EVENT_BEGIN0("startup", "IOThread::InitAsync:SetRulesFromString");
globals_->host_mapping_rules->SetRulesFromString(
command_line.GetSwitchValueASCII(switches::kHostRules));
TRACE_EVENT_END0("startup", "IOThread::InitAsync:SetRulesFromString");
}
globals_->enable_brotli =
base::FeatureList::IsEnabled(features::kBrotliEncoding);
params_.enable_token_binding =
base::FeatureList::IsEnabled(features::kTokenBinding);
// Check for OS support of TCP FastOpen, and turn it on for all connections if
// indicated by user.
// TODO(rch): Make the client socket factory a per-network session instance,
// constructed from a NetworkSession::Params, to allow us to move this option
// to IOThread::Globals & HttpNetworkSession::Params.
bool always_enable_tfo_if_supported =
command_line.HasSwitch(switches::kEnableTcpFastOpen);
net::CheckSupportAndMaybeEnableTCPFastOpen(always_enable_tfo_if_supported);
ConfigureParamsFromFieldTrialsAndCommandLine(
command_line, is_quic_allowed_by_policy_,
http_09_on_non_default_ports_enabled_, &params_);
TRACE_EVENT_BEGIN0("startup",
"IOThread::Init:ProxyScriptFetcherRequestContext");
globals_->proxy_script_fetcher_context.reset(
ConstructProxyScriptFetcherContext(globals_, params_, net_log_));
TRACE_EVENT_END0("startup",
"IOThread::Init:ProxyScriptFetcherRequestContext");
#if defined(OS_MACOSX)
// Start observing Keychain events. This needs to be done on the UI thread,
// as Keychain services requires a CFRunLoop.
BrowserThread::PostTask(BrowserThread::UI,
FROM_HERE,
base::Bind(&ObserveKeychainEvents));
#endif
// InitSystemRequestContext turns right around and posts a task back
// to the IO thread, so we can't let it run until we know the IO
// thread has started.
//
// Note that since we are at BrowserThread::Init time, the UI thread
// is blocked waiting for the thread to start. Therefore, posting
// this task to the main thread's message loop here is guaranteed to
// get it onto the message loop while the IOThread object still
// exists. However, the message might not be processed on the UI
// thread until after IOThread is gone, so use a weak pointer.
BrowserThread::PostTask(BrowserThread::UI,
FROM_HERE,
base::Bind(&IOThread::InitSystemRequestContext,
weak_factory_.GetWeakPtr()));
#if defined(OS_ANDROID) && defined(ARCH_CPU_ARMEL)
// Record how common CPUs with broken NEON units are. See
// https://crbug.com/341598.
crypto::EnsureOpenSSLInit();
UMA_HISTOGRAM_BOOLEAN("Net.HasBrokenNEON", CRYPTO_has_broken_NEON());
#endif
}
void IOThread::CleanUp() {
base::debug::LeakTracker<SafeBrowsingURLRequestContext>::CheckForLeaks();
#if defined(USE_NSS_CERTS)
net::ShutdownNSSHttpIO();
#endif
system_url_request_context_getter_ = NULL;
// Unlink the ct_tree_tracker_ from the global cert_transparency_verifier
// and unregister it from new STH notifications so it will take no actions
// on anything observed during CleanUp process.
globals()->cert_transparency_verifier->SetObserver(nullptr);
UnregisterSTHObserver(ct_tree_tracker_.get());
ct_tree_tracker_.reset();
// Release objects that the net::URLRequestContext could have been pointing
// to.
// Shutdown the HistogramWatcher on the IO thread.
net::NetworkChangeNotifier::ShutdownHistogramWatcher();
// This must be reset before the ChromeNetLog is destroyed.
network_change_observer_.reset();
system_proxy_config_service_.reset();
delete globals_;
globals_ = NULL;
base::debug::LeakTracker<SystemURLRequestContextGetter>::CheckForLeaks();
}
// static
void IOThread::RegisterPrefs(PrefRegistrySimple* registry) {
registry->RegisterStringPref(prefs::kAuthSchemes,
"basic,digest,ntlm,negotiate");
registry->RegisterBooleanPref(prefs::kDisableAuthNegotiateCnameLookup, false);
registry->RegisterBooleanPref(prefs::kEnableAuthNegotiatePort, false);
registry->RegisterStringPref(prefs::kAuthServerWhitelist, std::string());
registry->RegisterStringPref(prefs::kAuthNegotiateDelegateWhitelist,
std::string());
registry->RegisterStringPref(prefs::kGSSAPILibraryName, std::string());
registry->RegisterStringPref(prefs::kAuthAndroidNegotiateAccountType,
std::string());
registry->RegisterBooleanPref(prefs::kEnableReferrers, true);
data_reduction_proxy::RegisterPrefs(registry);
registry->RegisterBooleanPref(prefs::kBuiltInDnsClientEnabled, true);
registry->RegisterBooleanPref(prefs::kQuickCheckEnabled, true);
registry->RegisterBooleanPref(prefs::kPacHttpsUrlStrippingEnabled, true);
}
void IOThread::UpdateServerWhitelist() {
globals_->http_auth_preferences->set_server_whitelist(
auth_server_whitelist_.GetValue());
}
void IOThread::UpdateDelegateWhitelist() {
globals_->http_auth_preferences->set_delegate_whitelist(
auth_delegate_whitelist_.GetValue());
}
#if defined(OS_ANDROID)
void IOThread::UpdateAndroidAuthNegotiateAccountType() {
globals_->http_auth_preferences->set_auth_android_negotiate_account_type(
auth_android_negotiate_account_type_.GetValue());
}
#endif
void IOThread::UpdateNegotiateDisableCnameLookup() {
globals_->http_auth_preferences->set_negotiate_disable_cname_lookup(
negotiate_disable_cname_lookup_.GetValue());
}
void IOThread::UpdateNegotiateEnablePort() {
globals_->http_auth_preferences->set_negotiate_enable_port(
negotiate_enable_port_.GetValue());
}
void IOThread::CreateDefaultAuthHandlerFactory() {
std::vector<std::string> supported_schemes = base::SplitString(
auth_schemes_, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
globals_->http_auth_preferences.reset(new net::HttpAuthPreferences(
supported_schemes
#if defined(OS_POSIX) && !defined(OS_ANDROID)
,
gssapi_library_name_
#endif
));
UpdateServerWhitelist();
UpdateDelegateWhitelist();
UpdateNegotiateDisableCnameLookup();
UpdateNegotiateEnablePort();
#if defined(OS_ANDROID)
UpdateAndroidAuthNegotiateAccountType();
#endif
globals_->http_auth_handler_factory =
net::HttpAuthHandlerRegistryFactory::Create(
globals_->http_auth_preferences.get(), globals_->host_resolver.get());
}
void IOThread::ClearHostCache() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
net::HostCache* host_cache = globals_->host_resolver->GetHostCache();
if (host_cache)
host_cache->clear();
}
const net::HttpNetworkSession::Params& IOThread::NetworkSessionParams() const {
return params_;
}
base::TimeTicks IOThread::creation_time() const {
return creation_time_;
}
net::SSLConfigService* IOThread::GetSSLConfigService() {
return ssl_config_service_manager_->Get();
}
void IOThread::ChangedToOnTheRecordOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
// Clear the host cache to avoid showing entries from the OTR session
// in about:net-internals.
ClearHostCache();
}
void IOThread::InitSystemRequestContext() {
if (system_url_request_context_getter_.get())
return;
// If we're in unit_tests, IOThread may not be run.
if (!BrowserThread::IsMessageLoopValid(BrowserThread::IO))
return;
system_proxy_config_service_ = ProxyServiceFactory::CreateProxyConfigService(
pref_proxy_config_tracker_.get());
system_url_request_context_getter_ =
new SystemURLRequestContextGetter(this);
// Safe to post an unretained this pointer, since IOThread is
// guaranteed to outlive the IO BrowserThread.
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&IOThread::InitSystemRequestContextOnIOThread,
base::Unretained(this)));
}
void IOThread::InitSystemRequestContextOnIOThread() {
DCHECK_CURRENTLY_ON(BrowserThread::IO);
DCHECK(!globals_->system_proxy_service.get());
DCHECK(system_proxy_config_service_.get());
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
globals_->system_proxy_service = ProxyServiceFactory::CreateProxyService(
net_log_, globals_->proxy_script_fetcher_context.get(),
globals_->system_network_delegate.get(),
std::move(system_proxy_config_service_), command_line,
WpadQuickCheckEnabled(), PacHttpsUrlStrippingEnabled());
globals_->system_request_context.reset(
ConstructSystemRequestContext(globals_, params_, net_log_));
}
void IOThread::UpdateDnsClientEnabled() {
globals()->host_resolver->SetDnsClientEnabled(*dns_client_enabled_);
}
void IOThread::RegisterSTHObserver(net::ct::STHObserver* observer) {
chrome_browser_net::GetGlobalSTHDistributor()->RegisterObserver(observer);
}
void IOThread::UnregisterSTHObserver(net::ct::STHObserver* observer) {
chrome_browser_net::GetGlobalSTHDistributor()->UnregisterObserver(observer);
}
bool IOThread::WpadQuickCheckEnabled() const {
return quick_check_enabled_.GetValue();
}
bool IOThread::PacHttpsUrlStrippingEnabled() const {
return pac_https_url_stripping_enabled_.GetValue();
}
// static
net::URLRequestContext* IOThread::ConstructSystemRequestContext(
IOThread::Globals* globals,
const net::HttpNetworkSession::Params& params,
net::NetLog* net_log) {
net::URLRequestContext* context = new SystemURLRequestContext;
context->set_net_log(net_log);
context->set_host_resolver(globals->host_resolver.get());
context->set_cert_verifier(globals->cert_verifier.get());
context->set_transport_security_state(
globals->transport_security_state.get());
context->set_cert_transparency_verifier(
globals->cert_transparency_verifier.get());
context->set_ct_policy_enforcer(globals->ct_policy_enforcer.get());
context->set_ssl_config_service(globals->ssl_config_service.get());
context->set_http_auth_handler_factory(
globals->http_auth_handler_factory.get());
context->set_proxy_service(globals->system_proxy_service.get());
globals->system_url_request_job_factory.reset(
new net::URLRequestJobFactoryImpl());
context->set_job_factory(globals->system_url_request_job_factory.get());
context->set_cookie_store(globals->system_cookie_store.get());
context->set_channel_id_service(
globals->system_channel_id_service.get());
context->set_network_delegate(globals->system_network_delegate.get());
context->set_http_user_agent_settings(
globals->http_user_agent_settings.get());
context->set_network_quality_estimator(
globals->network_quality_estimator.get());
context->set_http_server_properties(globals->http_server_properties.get());
context->set_enable_brotli(globals->enable_brotli);
net::HttpNetworkSession::Params system_params(params);
net::URLRequestContextBuilder::SetHttpNetworkSessionComponents(
context, &system_params);
globals->system_http_network_session.reset(
new net::HttpNetworkSession(system_params));
globals->system_http_transaction_factory.reset(
new net::HttpNetworkLayer(globals->system_http_network_session.get()));
context->set_http_transaction_factory(
globals->system_http_transaction_factory.get());
return context;
}
// static
void IOThread::ConfigureParamsFromFieldTrialsAndCommandLine(
const base::CommandLine& command_line,
bool is_quic_allowed_by_policy,
bool http_09_on_non_default_ports_enabled,
net::HttpNetworkSession::Params* params) {
std::string quic_user_agent_id = chrome::GetChannelString();
if (!quic_user_agent_id.empty())
quic_user_agent_id.push_back(' ');
quic_user_agent_id.append(
version_info::GetProductNameAndVersionForUserAgent());
quic_user_agent_id.push_back(' ');
quic_user_agent_id.append(content::BuildOSCpuInfo());
bool is_quic_force_disabled = !is_quic_allowed_by_policy ||
command_line.HasSwitch(switches::kDisableQuic);
bool is_quic_force_enabled = command_line.HasSwitch(switches::kEnableQuic);
network_session_configurator::ParseFieldTrials(is_quic_force_disabled,
is_quic_force_enabled,
quic_user_agent_id, params);
// Command line flags override field trials.
if (command_line.HasSwitch(switches::kIgnoreUrlFetcherCertRequests))
net::URLFetcher::SetIgnoreCertificateRequests(true);
if (command_line.HasSwitch(switches::kDisableHttp2))
params->enable_http2 = false;
if (command_line.HasSwitch(switches::kDisableQuicPortSelection)) {
params->enable_quic_port_selection = false;
} else if (command_line.HasSwitch(switches::kEnableQuicPortSelection)) {
params->enable_quic_port_selection = true;
}
if (params->enable_quic) {
if (command_line.HasSwitch(switches::kQuicConnectionOptions)) {
params->quic_connection_options =
net::QuicUtils::ParseQuicConnectionOptions(
command_line.GetSwitchValueASCII(
switches::kQuicConnectionOptions));
}
if (command_line.HasSwitch(switches::kQuicHostWhitelist)) {
std::string whitelist =
command_line.GetSwitchValueASCII(switches::kQuicHostWhitelist);
params->quic_host_whitelist.clear();
for (const std::string& host : base::SplitString(
whitelist, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
params->quic_host_whitelist.insert(host);
}
}
if (command_line.HasSwitch(switches::kQuicMaxPacketLength)) {
unsigned value;
if (base::StringToUint(
command_line.GetSwitchValueASCII(switches::kQuicMaxPacketLength),
&value)) {
params->quic_max_packet_length = value;
}
}
if (command_line.HasSwitch(switches::kQuicVersion)) {
net::QuicVersion version = network_session_configurator::ParseQuicVersion(
command_line.GetSwitchValueASCII(switches::kQuicVersion));
if (version != net::QUIC_VERSION_UNSUPPORTED) {
net::QuicVersionVector supported_versions;
supported_versions.push_back(version);
params->quic_supported_versions = supported_versions;
}
}
if (command_line.HasSwitch(switches::kOriginToForceQuicOn)) {
std::string origins =
command_line.GetSwitchValueASCII(switches::kOriginToForceQuicOn);
for (const std::string& host_port : base::SplitString(
origins, ",", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL)) {
if (host_port == "*")
params->origins_to_force_quic_on.insert(net::HostPortPair());
net::HostPortPair quic_origin =
net::HostPortPair::FromString(host_port);
if (!quic_origin.IsEmpty())
params->origins_to_force_quic_on.insert(quic_origin);
}
}
}
// Parameters only controlled by command line.
if (command_line.HasSwitch(switches::kEnableUserAlternateProtocolPorts)) {
params->enable_user_alternate_protocol_ports = true;
}
if (command_line.HasSwitch(switches::kIgnoreCertificateErrors))
params->ignore_certificate_errors = true;
if (command_line.HasSwitch(switches::kTestingFixedHttpPort)) {
params->testing_fixed_http_port =
GetSwitchValueAsInt(command_line, switches::kTestingFixedHttpPort);
}
if (command_line.HasSwitch(switches::kTestingFixedHttpsPort)) {
params->testing_fixed_https_port =
GetSwitchValueAsInt(command_line, switches::kTestingFixedHttpsPort);
}
params->http_09_on_non_default_ports_enabled =
http_09_on_non_default_ports_enabled;
}
// static
net::URLRequestContext* IOThread::ConstructProxyScriptFetcherContext(
IOThread::Globals* globals,
const net::HttpNetworkSession::Params& params,
net::NetLog* net_log) {
net::URLRequestContext* context = new net::URLRequestContext;
context->set_net_log(net_log);
context->set_host_resolver(globals->host_resolver.get());
context->set_cert_verifier(globals->cert_verifier.get());
context->set_transport_security_state(
globals->transport_security_state.get());
context->set_cert_transparency_verifier(
globals->cert_transparency_verifier.get());
context->set_ct_policy_enforcer(globals->ct_policy_enforcer.get());
context->set_ssl_config_service(globals->ssl_config_service.get());
context->set_http_auth_handler_factory(
globals->http_auth_handler_factory.get());
context->set_proxy_service(globals->proxy_script_fetcher_proxy_service.get());
context->set_job_factory(
globals->proxy_script_fetcher_url_request_job_factory.get());
context->set_cookie_store(globals->system_cookie_store.get());
context->set_channel_id_service(
globals->system_channel_id_service.get());
context->set_network_delegate(globals->system_network_delegate.get());
context->set_http_user_agent_settings(
globals->http_user_agent_settings.get());
context->set_http_server_properties(globals->http_server_properties.get());
context->set_enable_brotli(globals->enable_brotli);
net::HttpNetworkSession::Params session_params(params);
net::URLRequestContextBuilder::SetHttpNetworkSessionComponents(
context, &session_params);
globals->proxy_script_fetcher_http_network_session.reset(
new net::HttpNetworkSession(session_params));
globals->proxy_script_fetcher_http_transaction_factory.reset(
new net::HttpNetworkLayer(
globals->proxy_script_fetcher_http_network_session.get()));
context->set_http_transaction_factory(
globals->proxy_script_fetcher_http_transaction_factory.get());
std::unique_ptr<net::URLRequestJobFactoryImpl> job_factory(
new net::URLRequestJobFactoryImpl());
job_factory->SetProtocolHandler(
url::kDataScheme, base::WrapUnique(new net::DataProtocolHandler()));
job_factory->SetProtocolHandler(
url::kFileScheme,
base::WrapUnique(new net::FileProtocolHandler(
content::BrowserThread::GetBlockingPool()
->GetTaskRunnerWithShutdownBehavior(
base::SequencedWorkerPool::SKIP_ON_SHUTDOWN))));
#if !defined(DISABLE_FTP_SUPPORT)
globals->proxy_script_fetcher_ftp_transaction_factory.reset(
new net::FtpNetworkLayer(globals->host_resolver.get()));
job_factory->SetProtocolHandler(
url::kFtpScheme,
base::WrapUnique(new net::FtpProtocolHandler(
globals->proxy_script_fetcher_ftp_transaction_factory.get())));
#endif
globals->proxy_script_fetcher_url_request_job_factory =
std::move(job_factory);
context->set_job_factory(
globals->proxy_script_fetcher_url_request_job_factory.get());
// TODO(rtenneti): We should probably use HttpServerPropertiesManager for the
// system URLRequestContext too. There's no reason this should be tied to a
// profile.
return context;
}
const metrics::UpdateUsagePrefCallbackType&
IOThread::GetMetricsDataUseForwarder() {
return metrics_data_use_forwarder_;
}