QUIC - Race Cert Verification with host resolution if certs are

net/quic/chromium/quic_stream_factory.cc

 // 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 "net/quic/chromium/quic_stream_factory.h"
 
 #include <openssl/aead.h>
 
 #include <algorithm>
 #include <tuple>
@@ skipping 22 matching lines @@
 #include "net/dns/single_request_host_resolver.h"
 #include "net/http/bidirectional_stream_impl.h"
 #include "net/quic/chromium/bidirectional_stream_quic_impl.h"
 #include "net/quic/chromium/crypto/channel_id_chromium.h"
 #include "net/quic/chromium/crypto/proof_verifier_chromium.h"
 #include "net/quic/chromium/port_suggester.h"
 #include "net/quic/chromium/quic_chromium_alarm_factory.h"
 #include "net/quic/chromium/quic_chromium_connection_helper.h"
 #include "net/quic/chromium/quic_chromium_packet_reader.h"
 #include "net/quic/chromium/quic_chromium_packet_writer.h"
+#include "net/quic/core/crypto/proof_verifier.h"
 #include "net/quic/core/crypto/properties_based_quic_server_info.h"
 #include "net/quic/core/crypto/quic_random.h"
 #include "net/quic/core/crypto/quic_server_info.h"
 #include "net/quic/core/quic_client_promised_info.h"
 #include "net/quic/core/quic_clock.h"
 #include "net/quic/core/quic_connection.h"
 #include "net/quic/core/quic_crypto_client_stream_factory.h"
 #include "net/quic/core/quic_flags.h"
 #include "net/socket/client_socket_factory.h"
 #include "net/socket/socket_performance_watcher.h"
@@ skipping 107 matching lines @@
   QuicConfig config;
   config.SetIdleConnectionStateLifetime(
       QuicTime::Delta::FromSeconds(idle_connection_timeout_seconds),
       QuicTime::Delta::FromSeconds(idle_connection_timeout_seconds));
   config.SetConnectionOptionsToSend(connection_options);
   return config;
 }
 
 }  // namespace
 
+// Responsible for verifying the certificates saved in
+// QuicCryptoClientConfig, and for notifying any associated requests when
+// complete. Results from cert verification are ignored.
+class QuicStreamFactory::CertVerifierJob {
+ public:
+  // ProofVerifierCallbackImpl is passed as the callback method to
+  // VerifyCertChain. The ProofVerifier calls this class with the result of cert
+  // verification when verification is performed asynchronously.
+  class ProofVerifierCallbackImpl : public ProofVerifierCallback {
+   public:
+    explicit ProofVerifierCallbackImpl(CertVerifierJob* job) : job_(job) {}
+
+    ~ProofVerifierCallbackImpl() override {}
+
+    void Run(bool ok,
+             const std::string& error_details,
+             std::unique_ptr<ProofVerifyDetails>* details) override {
+      if (job_ == nullptr)
+        return;
+      job_->verify_callback_ = nullptr;
+      job_->OnComplete();
+    }
+
+    void Cancel() { job_ = nullptr; }
+
+   private:
+    CertVerifierJob* job_;
+  };
+
+  CertVerifierJob(const QuicServerId& server_id,
+                  int cert_verify_flags,
+                  const BoundNetLog& net_log)
+      : server_id_(server_id),
+        verify_callback_(nullptr),
+        verify_context_(base::WrapUnique(
+            new ProofVerifyContextChromium(cert_verify_flags, net_log))),
+        net_log_(net_log),
+        weak_factory_(this) {}
+
+  ~CertVerifierJob() {
+    if (verify_callback_)
+      verify_callback_->Cancel();
+  }
+
+  // Starts verification of certs cached in the |crypto_config|.
+  QuicAsyncStatus Run(QuicCryptoClientConfig* crypto_config,
+                      const CompletionCallback& callback) {
+    QuicCryptoClientConfig::CachedState* cached =
+        crypto_config->LookupOrCreate(server_id_);
+    ProofVerifierCallbackImpl* verify_callback =
+        new ProofVerifierCallbackImpl(this);
+    QuicAsyncStatus status = crypto_config->proof_verifier()->VerifyCertChain(
+        server_id_.host(), cached->certs(), verify_context_.get(),
+        &verify_error_details_, &verify_details_,
+        std::unique_ptr<ProofVerifierCallback>(verify_callback));
+    if (status == QUIC_PENDING) {
+      verify_callback_ = verify_callback;
+      callback_ = callback;
+    }
+    return status;
+  }
+
+  void OnComplete() {
+    if (!callback_.is_null())
+      callback_.Run(OK);
+  }
+
+  const QuicServerId& server_id() const { return server_id_; }
+
+ private:
+  QuicServerId server_id_;
+  ProofVerifierCallbackImpl* verify_callback_;
+  std::unique_ptr<ProofVerifyContext> verify_context_;
+  std::unique_ptr<ProofVerifyDetails> verify_details_;
+  std::string verify_error_details_;
+  const BoundNetLog net_log_;
+  CompletionCallback callback_;
+  base::WeakPtrFactory<CertVerifierJob> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(CertVerifierJob);
+};
+
 // Responsible for creating a new QUIC session to the specified server, and
 // for notifying any associated requests when complete.
 class QuicStreamFactory::Job {
  public:
   Job(QuicStreamFactory* factory,
       HostResolver* host_resolver,
       const QuicSessionKey& key,
       bool was_alternative_service_recently_broken,
       int cert_verify_flags,
       QuicServerInfo* server_info,
@@ skipping 177 matching lines @@
 void QuicStreamFactory::Job::CancelWaitForDataReadyCallback() {
   // If we are waiting for WaitForDataReadyCallback, then cancel the callback.
   if (io_state_ != STATE_LOAD_SERVER_INFO_COMPLETE)
     return;
   server_info_->CancelWaitForDataReadyCallback();
   OnIOComplete(OK);
 }
 
 int QuicStreamFactory::Job::DoResolveHost() {
   // Start loading the data now, and wait for it after we resolve the host.
-  if (server_info_) {
+  if (server_info_)
     server_info_->Start();
-  }
 
   io_state_ = STATE_RESOLVE_HOST_COMPLETE;
   dns_resolution_start_time_ = base::TimeTicks::Now();
   return host_resolver_.Resolve(
       HostResolver::RequestInfo(key_.destination()), DEFAULT_PRIORITY,
       &address_list_,
       base::Bind(&QuicStreamFactory::Job::OnIOComplete, GetWeakPtr()),
       net_log_);
 }
 
 int QuicStreamFactory::Job::DoResolveHostComplete(int rv) {
   dns_resolution_end_time_ = base::TimeTicks::Now();
   UMA_HISTOGRAM_TIMES("Net.QuicSession.HostResolutionTime",
                       dns_resolution_end_time_ - dns_resolution_start_time_);
   if (rv != OK)
     return rv;
 
   DCHECK(!factory_->HasActiveSession(key_.server_id()));
 
   // Inform the factory of this resolution, which will set up
   // a session alias, if possible.
-  if (factory_->OnResolution(key_, address_list_)) {
+  if (factory_->OnResolution(key_, address_list_))
     return OK;
-  }
 
   if (server_info_)
     io_state_ = STATE_LOAD_SERVER_INFO;
   else
     io_state_ = STATE_CONNECT;
   return OK;
 }
 
 int QuicStreamFactory::Job::DoLoadServerInfo() {
   io_state_ = STATE_LOAD_SERVER_INFO_COMPLETE;
@@ skipping 58 matching lines @@
 
   int rv = factory_->CreateSession(
       key_, cert_verify_flags_, std::move(server_info_), address_list_,
       dns_resolution_end_time_, net_log_, &session_);
   if (rv != OK) {
     DCHECK(rv != ERR_IO_PENDING);
     DCHECK(!session_);
     return rv;
   }
 
-  if (!session_->connection()->connected()) {
+  if (!session_->connection()->connected())
     return ERR_CONNECTION_CLOSED;
-  }
 
   session_->StartReading();
-  if (!session_->connection()->connected()) {
+  if (!session_->connection()->connected())
     return ERR_QUIC_PROTOCOL_ERROR;
-  }
   bool require_confirmation = factory_->require_confirmation() ||
                               was_alternative_service_recently_broken_;
 
   rv = session_->CryptoConnect(
       require_confirmation,
       base::Bind(&QuicStreamFactory::Job::OnIOComplete, GetWeakPtr()));
 
   if (!session_->connection()->connected() &&
-      session_->error() == QUIC_PROOF_INVALID)
+      session_->error() == QUIC_PROOF_INVALID) {
     return ERR_QUIC_HANDSHAKE_FAILED;
+  }
 
   return rv;
 }
 
 int QuicStreamFactory::Job::DoResumeConnect() {
   io_state_ = STATE_CONNECT_COMPLETE;
 
   int rv = session_->ResumeCryptoConnect(
       base::Bind(&QuicStreamFactory::Job::OnIOComplete, GetWeakPtr()));
 
   return rv;
 }
 
 int QuicStreamFactory::Job::DoConnectComplete(int rv) {
   if (session_ && session_->error() == QUIC_CRYPTO_HANDSHAKE_STATELESS_REJECT) {
     num_sent_client_hellos_ += session_->GetNumSentClientHellos();
-    if (num_sent_client_hellos_ >= QuicCryptoClientStream::kMaxClientHellos) {
+    if (num_sent_client_hellos_ >= QuicCryptoClientStream::kMaxClientHellos)
       return ERR_QUIC_HANDSHAKE_FAILED;
-    }
     // The handshake was rejected statelessly, so create another connection
     // to resume the handshake.
     io_state_ = STATE_CONNECT;
     return OK;
   }
 
   if (rv != OK)
     return rv;
 
   DCHECK(!factory_->HasActiveSession(key_.server_id()));
@@ skipping 108 matching lines @@
     int socket_receive_buffer_size,
     bool delay_tcp_race,
     int max_server_configs_stored_in_properties,
     bool close_sessions_on_ip_change,
     bool disable_quic_on_timeout_with_open_streams,
     int idle_connection_timeout_seconds,
     bool migrate_sessions_on_network_change,
     bool migrate_sessions_early,
     bool allow_server_migration,
     bool force_hol_blocking,
+    bool race_cert_verification,
     const QuicTagVector& connection_options,
     bool enable_token_binding)
     : require_confirmation_(true),
       net_log_(net_log),
       host_resolver_(host_resolver),
       client_socket_factory_(client_socket_factory),
       http_server_properties_(http_server_properties),
       transport_security_state_(transport_security_state),
       cert_transparency_verifier_(cert_transparency_verifier),
       quic_crypto_client_stream_factory_(quic_crypto_client_stream_factory),
@@ skipping 36 matching lines @@
       yield_after_duration_(QuicTime::Delta::FromMilliseconds(
           kQuicYieldAfterDurationMilliseconds)),
       close_sessions_on_ip_change_(close_sessions_on_ip_change),
       migrate_sessions_on_network_change_(
           migrate_sessions_on_network_change &&
           NetworkChangeNotifier::AreNetworkHandlesSupported()),
       migrate_sessions_early_(migrate_sessions_early &&
                               migrate_sessions_on_network_change_),
       allow_server_migration_(allow_server_migration),
       force_hol_blocking_(force_hol_blocking),
+      race_cert_verification_(race_cert_verification),
       port_seed_(random_generator_->RandUint64()),
       check_persisted_supports_quic_(true),
       has_initialized_data_(false),
       num_push_streams_created_(0),
       status_(OPEN),
       task_runner_(nullptr),
       ssl_config_service_(ssl_config_service),
       weak_factory_(this) {
   if (ssl_config_service_.get())
     ssl_config_service_->AddObserver(this);
@@ skipping 47 matching lines @@
   CloseAllSessions(ERR_ABORTED, QUIC_CONNECTION_CANCELLED);
   while (!all_sessions_.empty()) {
     delete all_sessions_.begin()->first;
     all_sessions_.erase(all_sessions_.begin());
   }
   while (!active_jobs_.empty()) {
     const QuicServerId server_id = active_jobs_.begin()->first;
     STLDeleteElements(&(active_jobs_[server_id]));
     active_jobs_.erase(server_id);
   }
+  while (!active_cert_verifier_jobs_.empty())
+    active_cert_verifier_jobs_.erase(active_cert_verifier_jobs_.begin());
   if (ssl_config_service_.get())
     ssl_config_service_->RemoveObserver(this);
   if (migrate_sessions_on_network_change_) {
     NetworkChangeNotifier::RemoveNetworkObserver(this);
   } else if (close_sessions_on_ip_change_) {
     NetworkChangeNotifier::RemoveIPAddressObserver(this);
   }
 }
 
 void QuicStreamFactory::set_require_confirmation(bool require_confirmation) {
@@ skipping 111 matching lines @@
 
   QuicServerInfo* quic_server_info = nullptr;
   if (quic_server_info_factory_.get()) {
     bool load_from_disk_cache = !disable_disk_cache_;
     MaybeInitialize();
     if (!ContainsKey(quic_supported_servers_at_startup_, destination)) {
       // If there is no entry for QUIC, consider that as a new server and
       // don't wait for Cache thread to load the data for that server.
       load_from_disk_cache = false;
     }
-    if (load_from_disk_cache && CryptoConfigCacheIsEmpty(server_id)) {
+    if (load_from_disk_cache && CryptoConfigCacheIsEmpty(server_id))
       quic_server_info = quic_server_info_factory_->GetForServer(server_id);
-    }
   }
 
+  ignore_result(StartCertVerifyJob(server_id, cert_verify_flags, net_log));
+
   QuicSessionKey key(destination, server_id);
   std::unique_ptr<Job> job(
       new Job(this, host_resolver_, key, WasQuicRecentlyBroken(server_id),
               cert_verify_flags, quic_server_info, net_log));
   int rv = job->Run(base::Bind(&QuicStreamFactory::OnJobComplete,
                                base::Unretained(this), job.get()));
   if (rv == ERR_IO_PENDING) {
     active_requests_[request] = server_id;
     job_requests_map_[server_id].insert(request);
     active_jobs_[server_id].insert(job.release());
@@ skipping 40 matching lines @@
   active_jobs_[key.server_id()].insert(aux_job);
   task_runner_->PostTask(FROM_HERE,
                          base::Bind(&QuicStreamFactory::Job::RunAuxilaryJob,
                                     aux_job->GetWeakPtr()));
 }
 
 bool QuicStreamFactory::OnResolution(const QuicSessionKey& key,
                                      const AddressList& address_list) {
   const QuicServerId& server_id(key.server_id());
   DCHECK(!HasActiveSession(server_id));
-  if (disable_connection_pooling_) {
+  if (disable_connection_pooling_)
     return false;
-  }
   for (const IPEndPoint& address : address_list) {
     if (!ContainsKey(ip_aliases_, address))
       continue;
 
     const SessionSet& sessions = ip_aliases_[address];
     for (QuicChromiumClientSession* session : sessions) {
       if (!session->CanPool(server_id.host(), server_id.privacy_mode()))
         continue;
       active_sessions_[server_id] = session;
       session_aliases_[session].insert(key);
@@ skipping 49 matching lines @@
   for (Job* other_job : active_jobs_[server_id]) {
     if (other_job != job)
       other_job->Cancel();
   }
 
   STLDeleteElements(&(active_jobs_[server_id]));
   active_jobs_.erase(server_id);
   job_requests_map_.erase(server_id);
 }
 
+void QuicStreamFactory::OnCertVerifyJobComplete(CertVerifierJob* job, int rv) {
+  active_cert_verifier_jobs_.erase(job->server_id());
+}
+
 std::unique_ptr<QuicHttpStream> QuicStreamFactory::CreateFromSession(
     QuicChromiumClientSession* session) {
   return std::unique_ptr<QuicHttpStream>(
       new QuicHttpStream(session->GetWeakPtr()));
 }
 
 QuicChromiumClientSession::QuicDisabledReason
 QuicStreamFactory::QuicDisabledReason(uint16_t port) const {
   if (max_number_of_lossy_connections_ > 0 &&
       number_of_lossy_connections_.find(port) !=
@@ skipping 95 matching lines @@
 
 void QuicStreamFactory::OnSessionGoingAway(QuicChromiumClientSession* session) {
   const AliasSet& aliases = session_aliases_[session];
   for (AliasSet::const_iterator it = aliases.begin(); it != aliases.end();
        ++it) {
     const QuicServerId& server_id = it->server_id();
     DCHECK(active_sessions_.count(server_id));
     DCHECK_EQ(session, active_sessions_[server_id]);
     // Track sessions which have recently gone away so that we can disable
     // port suggestions.
-    if (session->goaway_received()) {
+    if (session->goaway_received())
       gone_away_aliases_.insert(*it);
-    }
 
     active_sessions_.erase(server_id);
     ProcessGoingAwaySession(session, server_id, true);
   }
   ProcessGoingAwaySession(session, all_sessions_[session].server_id(), false);
   if (!aliases.empty()) {
     const IPEndPoint peer_address = session->connection()->peer_address();
     ip_aliases_[peer_address].erase(session);
-    if (ip_aliases_[peer_address].empty()) {
+    if (ip_aliases_[peer_address].empty())
       ip_aliases_.erase(peer_address);
-    }
   }
   session_aliases_.erase(session);
 }
 
 void QuicStreamFactory::MaybeDisableQuic(QuicChromiumClientSession* session) {
   DCHECK(session);
   uint16_t port = session->server_id().port();
   if (IsQuicDisabled(port))
     return;
 
@@ skipping 84 matching lines @@
   MaybeDisableQuic(session);
   OnSessionGoingAway(session);
   delete session;
   all_sessions_.erase(session);
 }
 
 void QuicStreamFactory::OnSessionConnectTimeout(
     QuicChromiumClientSession* session) {
   const AliasSet& aliases = session_aliases_[session];
 
-  if (aliases.empty()) {
+  if (aliases.empty())
     return;
-  }
 
   for (const QuicSessionKey& key : aliases) {
     const QuicServerId& server_id = key.server_id();
     SessionMap::iterator session_it = active_sessions_.find(server_id);
     DCHECK(session_it != active_sessions_.end());
     DCHECK_EQ(session, session_it->second);
     active_sessions_.erase(session_it);
   }
 
   const IPEndPoint peer_address = session->connection()->peer_address();
   ip_aliases_[peer_address].erase(session);
-  if (ip_aliases_[peer_address].empty()) {
+  if (ip_aliases_[peer_address].empty())
     ip_aliases_.erase(peer_address);
-  }
   QuicSessionKey key = *aliases.begin();
   session_aliases_.erase(session);
   Job* job = new Job(this, host_resolver_, session, key);
   active_jobs_[key.server_id()].insert(job);
   int rv = job->Run(base::Bind(&QuicStreamFactory::OnJobComplete,
                                base::Unretained(this), job));
   DCHECK_EQ(ERR_IO_PENDING, rv);
 }
 
 void QuicStreamFactory::CancelRequest(QuicStreamRequest* request) {
@@ skipping 75 matching lines @@
   MaybeMigrateOrCloseSessions(network, /*force_close=*/false,
                               scoped_event_log.net_log());
 }
 
 NetworkHandle QuicStreamFactory::FindAlternateNetwork(
     NetworkHandle old_network) {
   // Find a new network that sessions bound to |old_network| can be migrated to.
   NetworkChangeNotifier::NetworkList network_list;
   NetworkChangeNotifier::GetConnectedNetworks(&network_list);
   for (NetworkHandle new_network : network_list) {
-    if (new_network != old_network) {
+    if (new_network != old_network)
       return new_network;
-    }
   }
   return NetworkChangeNotifier::kInvalidNetworkHandle;
 }
 
 void QuicStreamFactory::MaybeMigrateOrCloseSessions(
     NetworkHandle network,
     bool force_close,
     const BoundNetLog& bound_net_log) {
   DCHECK_NE(NetworkChangeNotifier::kInvalidNetworkHandle, network);
   NetworkHandle new_network = FindAlternateNetwork(network);
@@ skipping 187 matching lines @@
   // TODO(rtenneti): crbug.com/498823 - delete active_sessions_.empty() check.
   if (active_sessions_.empty())
     return false;
   return ContainsKey(active_sessions_, server_id);
 }
 
 bool QuicStreamFactory::HasActiveJob(const QuicServerId& server_id) const {
   return ContainsKey(active_jobs_, server_id);
 }
 
+bool QuicStreamFactory::HasActiveCertVerifierJob(
+    const QuicServerId& server_id) const {
+  return ContainsKey(active_cert_verifier_jobs_, server_id);
+}
+
 int QuicStreamFactory::ConfigureSocket(DatagramClientSocket* socket,
                                        IPEndPoint addr,
                                        NetworkHandle network) {
   if (enable_non_blocking_io_ &&
       client_socket_factory_ == ClientSocketFactory::GetDefaultFactory()) {
 #if defined(OS_WIN)
     static_cast<UDPClientSocket*>(socket)->UseNonBlockingIO();
 #endif
   }
 
@@ skipping 68 matching lines @@
           DatagramSocket::DEFAULT_BIND;  // Use OS to randomize.
 
   std::unique_ptr<DatagramClientSocket> socket(
       client_socket_factory_->CreateDatagramClientSocket(
           bind_type, base::Bind(&PortSuggester::SuggestPort, port_suggester),
           net_log.net_log(), net_log.source()));
 
   // Passing in kInvalidNetworkHandle binds socket to default network.
   int rv = ConfigureSocket(socket.get(), addr,
                            NetworkChangeNotifier::kInvalidNetworkHandle);
-  if (rv != OK) {
+  if (rv != OK)
     return rv;
-  }
 
-  if (enable_port_selection) {
+  if (enable_port_selection)
     DCHECK_LE(1u, port_suggester->call_count());
-  } else {
+  else
     DCHECK_EQ(0u, port_suggester->call_count());
-  }
 
   if (!helper_.get()) {
     helper_.reset(
         new QuicChromiumConnectionHelper(clock_.get(), random_generator_));
   }
 
   if (!alarm_factory_.get()) {
     alarm_factory_.reset(new QuicChromiumAlarmFactory(
         base::ThreadTaskRunnerHandle::Get().get(), clock_.get()));
   }
@@ skipping 93 matching lines @@
       alternative_service);
 }
 
 bool QuicStreamFactory::CryptoConfigCacheIsEmpty(
     const QuicServerId& server_id) {
   QuicCryptoClientConfig::CachedState* cached =
       crypto_config_.LookupOrCreate(server_id);
   return cached->IsEmpty();
 }
 
+QuicAsyncStatus QuicStreamFactory::StartCertVerifyJob(
+    const QuicServerId& server_id,
+    int cert_verify_flags,
+    const BoundNetLog& net_log) {
+  if (!race_cert_verification_)
+    return QUIC_FAILURE;
+  QuicCryptoClientConfig::CachedState* cached =
+      crypto_config_.LookupOrCreate(server_id);
+  if (!cached || cached->certs().empty() ||
+      HasActiveCertVerifierJob(server_id)) {
+    return QUIC_FAILURE;
+  }
+  std::unique_ptr<CertVerifierJob> cert_verifier_job(
+      new CertVerifierJob(server_id, cert_verify_flags, net_log));
+  QuicAsyncStatus status = cert_verifier_job->Run(
+      &crypto_config_,
+      base::Bind(&QuicStreamFactory::OnCertVerifyJobComplete,
+                 base::Unretained(this), cert_verifier_job.get()));
+  if (status == QUIC_PENDING)
+    active_cert_verifier_jobs_[server_id] = std::move(cert_verifier_job);
+  return status;
+}
+
 void QuicStreamFactory::InitializeCachedStateInCryptoConfig(
     const QuicServerId& server_id,
     const std::unique_ptr<QuicServerInfo>& server_info,
     QuicConnectionId* connection_id) {
   QuicCryptoClientConfig::CachedState* cached =
       crypto_config_.LookupOrCreate(server_id);
   if (cached->has_server_designated_connection_id())
     *connection_id = cached->GetNextServerDesignatedConnectionId();
 
   if (!cached->IsEmpty())
@@ skipping 101 matching lines @@
   // Since the session was active, there's no longer an
   // HttpStreamFactoryImpl::Job running which can mark it broken, unless the TCP
   // job also fails. So to avoid not using QUIC when we otherwise could, we mark
   // it as recently broken, which means that 0-RTT will be disabled but we'll
   // still race.
   http_server_properties_->MarkAlternativeServiceRecentlyBroken(
       alternative_service);
 }
 
 }  // namespace net