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// 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 <string>
#include "net/third_party/quiche/src/quic/core/proto/cached_network_parameters_proto.h"
#include "net/third_party/quiche/src/quic/core/proto/source_address_token_proto.h"
#include "net/third_party/quiche/src/quic/core/quic_crypto_handshaker.h"
#include "net/third_party/quiche/src/quic/core/quic_crypto_server_stream.h"
#include "net/third_party/quiche/src/quic/core/quic_session.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
namespace quic {
namespace test {
class QuicCryptoServerStreamPeer;
} // namespace test
class QUIC_EXPORT_PRIVATE QuicCryptoServerHandshaker
: public QuicCryptoServerStream::HandshakerDelegate,
public QuicCryptoHandshaker {
// |crypto_config| must outlive the stream.
// |session| must outlive the stream.
// |helper| must outlive the stream.
QuicCryptoServerHandshaker(const QuicCryptoServerConfig* crypto_config,
QuicCryptoServerStream* stream,
QuicCompressedCertsCache* compressed_certs_cache,
QuicSession* session,
QuicCryptoServerStream::Helper* helper);
QuicCryptoServerHandshaker(const QuicCryptoServerHandshaker&) = delete;
QuicCryptoServerHandshaker& operator=(const QuicCryptoServerHandshaker&) =
~QuicCryptoServerHandshaker() override;
// From HandshakerDelegate
void CancelOutstandingCallbacks() override;
bool GetBase64SHA256ClientChannelID(std::string* output) const override;
void SendServerConfigUpdate(
const CachedNetworkParameters* cached_network_params) override;
uint8_t NumHandshakeMessages() const override;
uint8_t NumHandshakeMessagesWithServerNonces() const override;
int NumServerConfigUpdateMessagesSent() const override;
const CachedNetworkParameters* PreviousCachedNetworkParams() const override;
bool ZeroRttAttempted() const override;
void SetPreviousCachedNetworkParams(
CachedNetworkParameters cached_network_params) override;
bool ShouldSendExpectCTHeader() const override;
// From QuicCryptoStream
bool encryption_established() const override;
bool handshake_confirmed() const override;
const QuicCryptoNegotiatedParameters& crypto_negotiated_params()
const override;
CryptoMessageParser* crypto_message_parser() override;
size_t BufferSizeLimitForLevel(EncryptionLevel level) const override;
// From QuicCryptoHandshaker
void OnHandshakeMessage(const CryptoHandshakeMessage& message) override;
virtual void ProcessClientHello(
std::unique_ptr<ProofSource::Details> proof_source_details,
std::unique_ptr<ProcessClientHelloResultCallback> done_cb);
// Hook that allows the server to set QuicConfig defaults just
// before going through the parameter negotiation step.
virtual void OverrideQuicConfigDefaults(QuicConfig* config);
// Returns client address used to generate and validate source address token.
virtual const QuicSocketAddress GetClientAddress();
// Returns the QuicSession that this stream belongs to.
QuicSession* session() const { return session_; }
void set_encryption_established(bool encryption_established) {
encryption_established_ = encryption_established;
void set_handshake_confirmed(bool handshake_confirmed) {
handshake_confirmed_ = handshake_confirmed;
friend class test::QuicCryptoServerStreamPeer;
class QUIC_EXPORT_PRIVATE ValidateCallback
: public ValidateClientHelloResultCallback {
explicit ValidateCallback(QuicCryptoServerHandshaker* parent);
ValidateCallback(const ValidateCallback&) = delete;
ValidateCallback& operator=(const ValidateCallback&) = delete;
// To allow the parent to detach itself from the callback before deletion.
void Cancel();
// From ValidateClientHelloResultCallback
void Run(QuicReferenceCountedPointer<Result> result,
std::unique_ptr<ProofSource::Details> details) override;
QuicCryptoServerHandshaker* parent_;
class SendServerConfigUpdateCallback
: public BuildServerConfigUpdateMessageResultCallback {
explicit SendServerConfigUpdateCallback(QuicCryptoServerHandshaker* parent);
SendServerConfigUpdateCallback(const SendServerConfigUpdateCallback&) =
void operator=(const SendServerConfigUpdateCallback&) = delete;
// To allow the parent to detach itself from the callback before deletion.
void Cancel();
// From BuildServerConfigUpdateMessageResultCallback
void Run(bool ok, const CryptoHandshakeMessage& message) override;
QuicCryptoServerHandshaker* parent_;
// Invoked by ValidateCallback::RunImpl once initial validation of
// the client hello is complete. Finishes processing of the client
// hello message and handles handshake success/failure.
void FinishProcessingHandshakeMessage(
std::unique_ptr<ProofSource::Details> details);
class ProcessClientHelloCallback;
friend class ProcessClientHelloCallback;
// Portion of FinishProcessingHandshakeMessage which executes after
// ProcessClientHello has been called.
void FinishProcessingHandshakeMessageAfterProcessClientHello(
const ValidateClientHelloResultCallback::Result& result,
QuicErrorCode error,
const std::string& error_details,
std::unique_ptr<CryptoHandshakeMessage> reply,
std::unique_ptr<DiversificationNonce> diversification_nonce,
std::unique_ptr<ProofSource::Details> proof_source_details);
// Invoked by SendServerConfigUpdateCallback::RunImpl once the proof has been
// received. |ok| indicates whether or not the proof was successfully
// acquired, and |message| holds the partially-constructed message from
// SendServerConfigUpdate.
void FinishSendServerConfigUpdate(bool ok,
const CryptoHandshakeMessage& message);
// Returns the QuicTransportVersion of the connection.
QuicTransportVersion transport_version() const {
return session_->transport_version();
QuicCryptoServerStream* stream_;
QuicSession* session_;
// crypto_config_ contains crypto parameters for the handshake.
const QuicCryptoServerConfig* crypto_config_;
// compressed_certs_cache_ contains a set of most recently compressed certs.
// Owned by QuicDispatcher.
QuicCompressedCertsCache* compressed_certs_cache_;
// Server's certificate chain and signature of the server config, as provided
// by ProofSource::GetProof.
QuicReferenceCountedPointer<QuicSignedServerConfig> signed_config_;
// Hash of the last received CHLO message which can be used for generating
// server config update messages.
std::string chlo_hash_;
// Pointer to the helper for this crypto stream. Must outlive this stream.
QuicCryptoServerStream::Helper* helper_;
// Number of handshake messages received by this stream.
uint8_t num_handshake_messages_;
// Number of handshake messages received by this stream that contain
// server nonces (indicating that this is a non-zero-RTT handshake
// attempt).
uint8_t num_handshake_messages_with_server_nonces_;
// Pointer to the active callback that will receive the result of
// BuildServerConfigUpdateMessage and forward it to
// FinishSendServerConfigUpdate. nullptr if no update message is currently
// being built.
SendServerConfigUpdateCallback* send_server_config_update_cb_;
// Number of server config update (SCUP) messages sent by this stream.
int num_server_config_update_messages_sent_;
// If the client provides CachedNetworkParameters in the STK in the CHLO, then
// store here, and send back in future STKs if we have no better bandwidth
// estimate to send.
std::unique_ptr<CachedNetworkParameters> previous_cached_network_params_;
// Contains any source address tokens which were present in the CHLO.
SourceAddressTokens previous_source_address_tokens_;
// True if client attempts 0-rtt handshake (which can succeed or fail).
bool zero_rtt_attempted_;
// Size of the packet containing the most recently received CHLO.
QuicByteCount chlo_packet_size_;
// Pointer to the active callback that will receive the result of the client
// hello validation request and forward it to FinishProcessingHandshakeMessage
// for processing. nullptr if no handshake message is being validated. Note
// that this field is mutually exclusive with process_client_hello_cb_.
ValidateCallback* validate_client_hello_cb_;
// Pointer to the active callback which will receive the results of
// ProcessClientHello and forward it to
// FinishProcessingHandshakeMessageAfterProcessClientHello. Note that this
// field is mutually exclusive with validate_client_hello_cb_.
ProcessClientHelloCallback* process_client_hello_cb_;
bool encryption_established_;
bool handshake_confirmed_;
} // namespace quic