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// Copyright (c) 2017 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.
#ifndef QUICHE_QUIC_CORE_TLS_SERVER_HANDSHAKER_H_
#define QUICHE_QUIC_CORE_TLS_SERVER_HANDSHAKER_H_
#include <string>
#include "absl/strings/string_view.h"
#include "third_party/boringssl/src/include/openssl/pool.h"
#include "third_party/boringssl/src/include/openssl/ssl.h"
#include "net/third_party/quiche/src/quic/core/crypto/quic_crypto_server_config.h"
#include "net/third_party/quiche/src/quic/core/crypto/tls_server_connection.h"
#include "net/third_party/quiche/src/quic/core/proto/cached_network_parameters_proto.h"
#include "net/third_party/quiche/src/quic/core/quic_crypto_server_stream_base.h"
#include "net/third_party/quiche/src/quic/core/quic_crypto_stream.h"
#include "net/third_party/quiche/src/quic/core/tls_handshaker.h"
#include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
namespace quic {
// An implementation of QuicCryptoServerStreamBase which uses
// TLS 1.3 for the crypto handshake protocol.
class QUIC_EXPORT_PRIVATE TlsServerHandshaker
: public TlsHandshaker,
public TlsServerConnection::Delegate,
public QuicCryptoServerStreamBase {
public:
TlsServerHandshaker(QuicSession* session,
const QuicCryptoServerConfig& crypto_config);
TlsServerHandshaker(const TlsServerHandshaker&) = delete;
TlsServerHandshaker& operator=(const TlsServerHandshaker&) = delete;
~TlsServerHandshaker() override;
// From QuicCryptoServerStreamBase
void CancelOutstandingCallbacks() override;
bool GetBase64SHA256ClientChannelID(std::string* output) const override;
void SendServerConfigUpdate(
const CachedNetworkParameters* cached_network_params) override;
bool IsZeroRtt() const override;
bool IsResumption() const override;
bool ResumptionAttempted() const override;
int NumServerConfigUpdateMessagesSent() const override;
const CachedNetworkParameters* PreviousCachedNetworkParams() const override;
void SetPreviousCachedNetworkParams(
CachedNetworkParameters cached_network_params) override;
void OnPacketDecrypted(EncryptionLevel level) override;
void OnOneRttPacketAcknowledged() override {}
void OnHandshakePacketSent() override {}
void OnConnectionClosed(QuicErrorCode error,
ConnectionCloseSource source) override;
void OnHandshakeDoneReceived() override;
bool ShouldSendExpectCTHeader() const override;
const ProofSource::Details* ProofSourceDetails() const override;
// From QuicCryptoServerStreamBase and TlsHandshaker
ssl_early_data_reason_t EarlyDataReason() const override;
bool encryption_established() const override;
bool one_rtt_keys_available() const override;
const QuicCryptoNegotiatedParameters& crypto_negotiated_params()
const override;
CryptoMessageParser* crypto_message_parser() override;
HandshakeState GetHandshakeState() const override;
void SetServerApplicationStateForResumption(
std::unique_ptr<ApplicationState> state) override;
size_t BufferSizeLimitForLevel(EncryptionLevel level) const override;
bool KeyUpdateSupportedLocally() const override;
std::unique_ptr<QuicDecrypter> AdvanceKeysAndCreateCurrentOneRttDecrypter()
override;
std::unique_ptr<QuicEncrypter> CreateCurrentOneRttEncrypter() override;
void SetWriteSecret(EncryptionLevel level,
const SSL_CIPHER* cipher,
const std::vector<uint8_t>& write_secret) override;
protected:
// Hook to allow the server to override parts of the QuicConfig based on SNI
// before we generate transport parameters.
virtual void OverrideQuicConfigDefaults(QuicConfig* config);
const TlsConnection* tls_connection() const override {
return &tls_connection_;
}
virtual void ProcessAdditionalTransportParameters(
const TransportParameters& /*params*/) {}
// Called when a potentially async operation is done and the done callback
// needs to advance the handshake.
void AdvanceHandshakeFromCallback();
// TlsHandshaker implementation:
void FinishHandshake() override;
void ProcessPostHandshakeMessage() override {}
QuicAsyncStatus VerifyCertChain(
const std::vector<std::string>& certs,
std::string* error_details,
std::unique_ptr<ProofVerifyDetails>* details,
uint8_t* out_alert,
std::unique_ptr<ProofVerifierCallback> callback) override;
void OnProofVerifyDetailsAvailable(
const ProofVerifyDetails& verify_details) override;
// TlsServerConnection::Delegate implementation:
int SelectCertificate(int* out_alert) override;
int SelectAlpn(const uint8_t** out,
uint8_t* out_len,
const uint8_t* in,
unsigned in_len) override;
ssl_private_key_result_t PrivateKeySign(uint8_t* out,
size_t* out_len,
size_t max_out,
uint16_t sig_alg,
absl::string_view in) override;
ssl_private_key_result_t PrivateKeyComplete(uint8_t* out,
size_t* out_len,
size_t max_out) override;
size_t SessionTicketMaxOverhead() override;
int SessionTicketSeal(uint8_t* out,
size_t* out_len,
size_t max_out_len,
absl::string_view in) override;
ssl_ticket_aead_result_t SessionTicketOpen(uint8_t* out,
size_t* out_len,
size_t max_out_len,
absl::string_view in) override;
TlsConnection::Delegate* ConnectionDelegate() override { return this; }
private:
class QUIC_EXPORT_PRIVATE SignatureCallback
: public ProofSource::SignatureCallback {
public:
explicit SignatureCallback(TlsServerHandshaker* handshaker);
void Run(bool ok,
std::string signature,
std::unique_ptr<ProofSource::Details> details) override;
// If called, Cancel causes the pending callback to be a no-op.
void Cancel();
private:
TlsServerHandshaker* handshaker_;
};
class QUIC_EXPORT_PRIVATE DecryptCallback
: public ProofSource::DecryptCallback {
public:
explicit DecryptCallback(TlsServerHandshaker* handshaker);
void Run(std::vector<uint8_t> plaintext) override;
// If called, Cancel causes the pending callback to be a no-op.
void Cancel();
private:
TlsServerHandshaker* handshaker_;
};
bool SetTransportParameters();
bool ProcessTransportParameters(std::string* error_details);
ProofSource* proof_source_;
SignatureCallback* signature_callback_ = nullptr;
// State to handle potentially asynchronous session ticket decryption.
// |ticket_decryption_callback_| points to the non-owned callback that was
// passed to ProofSource::TicketCrypter::Decrypt but hasn't finished running
// yet.
DecryptCallback* ticket_decryption_callback_ = nullptr;
// |decrypted_session_ticket_| contains the decrypted session ticket after the
// callback has run but before it is passed to BoringSSL.
std::vector<uint8_t> decrypted_session_ticket_;
// |ticket_received_| tracks whether we received a resumption ticket from the
// client. It does not matter whether we were able to decrypt said ticket or
// if we actually resumed a session with it - the presence of this ticket
// indicates that the client attempted a resumption.
bool ticket_received_ = false;
std::string hostname_;
std::string cert_verify_sig_;
std::unique_ptr<ProofSource::Details> proof_source_details_;
std::unique_ptr<ApplicationState> application_state_;
// Pre-shared key used during the handshake.
std::string pre_shared_key_;
HandshakeState state_ = HANDSHAKE_START;
bool encryption_established_ = false;
bool valid_alpn_received_ = false;
QuicReferenceCountedPointer<QuicCryptoNegotiatedParameters>
crypto_negotiated_params_;
TlsServerConnection tls_connection_;
};
} // namespace quic
#endif // QUICHE_QUIC_CORE_TLS_SERVER_HANDSHAKER_H_
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