| // 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. |
| |
| #ifndef QUICHE_QUIC_CORE_QUIC_CRYPTO_CLIENT_HANDSHAKER_H_ |
| #define QUICHE_QUIC_CORE_QUIC_CRYPTO_CLIENT_HANDSHAKER_H_ |
| |
| #include <string> |
| |
| #include "net/third_party/quiche/src/quic/core/crypto/proof_verifier.h" |
| #include "net/third_party/quiche/src/quic/core/crypto/quic_crypto_client_config.h" |
| #include "net/third_party/quiche/src/quic/core/quic_crypto_client_stream.h" |
| #include "net/third_party/quiche/src/quic/core/quic_server_id.h" |
| #include "net/third_party/quiche/src/quic/platform/api/quic_export.h" |
| |
| namespace quic { |
| |
| // An implementation of QuicCryptoClientStream::HandshakerDelegate which uses |
| // QUIC crypto as the crypto handshake protocol. |
| class QUIC_EXPORT_PRIVATE QuicCryptoClientHandshaker |
| : public QuicCryptoClientStream::HandshakerDelegate, |
| public QuicCryptoHandshaker { |
| public: |
| QuicCryptoClientHandshaker( |
| const QuicServerId& server_id, |
| QuicCryptoClientStream* stream, |
| QuicSession* session, |
| std::unique_ptr<ProofVerifyContext> verify_context, |
| QuicCryptoClientConfig* crypto_config, |
| QuicCryptoClientStream::ProofHandler* proof_handler); |
| QuicCryptoClientHandshaker(const QuicCryptoClientHandshaker&) = delete; |
| QuicCryptoClientHandshaker& operator=(const QuicCryptoClientHandshaker&) = |
| delete; |
| |
| ~QuicCryptoClientHandshaker() override; |
| |
| // From QuicCryptoClientStream::HandshakerDelegate |
| bool CryptoConnect() override; |
| int num_sent_client_hellos() const override; |
| int num_scup_messages_received() const override; |
| std::string chlo_hash() const override; |
| bool encryption_established() const override; |
| bool handshake_confirmed() const override; |
| const QuicCryptoNegotiatedParameters& crypto_negotiated_params() |
| const override; |
| CryptoMessageParser* crypto_message_parser() override; |
| |
| // From QuicCryptoHandshaker |
| void OnHandshakeMessage(const CryptoHandshakeMessage& message) override; |
| |
| protected: |
| // Returns the QuicSession that this stream belongs to. |
| QuicSession* session() const { return session_; } |
| |
| // Send either InchoateClientHello or ClientHello message to the server. |
| void DoSendCHLO(QuicCryptoClientConfig::CachedState* cached); |
| |
| private: |
| // ProofVerifierCallbackImpl is passed as the callback method to VerifyProof. |
| // The ProofVerifier calls this class with the result of proof verification |
| // when verification is performed asynchronously. |
| class ProofVerifierCallbackImpl : public ProofVerifierCallback { |
| public: |
| explicit ProofVerifierCallbackImpl(QuicCryptoClientHandshaker* parent); |
| ~ProofVerifierCallbackImpl() override; |
| |
| // ProofVerifierCallback interface. |
| void Run(bool ok, |
| const std::string& error_details, |
| std::unique_ptr<ProofVerifyDetails>* details) override; |
| |
| // Cancel causes any future callbacks to be ignored. It must be called on |
| // the same thread as the callback will be made on. |
| void Cancel(); |
| |
| private: |
| QuicCryptoClientHandshaker* parent_; |
| }; |
| |
| enum State { |
| STATE_IDLE, |
| STATE_INITIALIZE, |
| STATE_SEND_CHLO, |
| STATE_RECV_REJ, |
| STATE_VERIFY_PROOF, |
| STATE_VERIFY_PROOF_COMPLETE, |
| STATE_RECV_SHLO, |
| STATE_INITIALIZE_SCUP, |
| STATE_NONE, |
| }; |
| |
| // Handles new server config and optional source-address token provided by the |
| // server during a connection. |
| void HandleServerConfigUpdateMessage( |
| const CryptoHandshakeMessage& server_config_update); |
| |
| // DoHandshakeLoop performs a step of the handshake state machine. Note that |
| // |in| may be nullptr if the call did not result from a received message. |
| void DoHandshakeLoop(const CryptoHandshakeMessage* in); |
| |
| // Start the handshake process. |
| void DoInitialize(QuicCryptoClientConfig::CachedState* cached); |
| |
| // Process REJ message from the server. |
| void DoReceiveREJ(const CryptoHandshakeMessage* in, |
| QuicCryptoClientConfig::CachedState* cached); |
| |
| // Start the proof verification process. Returns the QuicAsyncStatus returned |
| // by the ProofVerifier's VerifyProof. |
| QuicAsyncStatus DoVerifyProof(QuicCryptoClientConfig::CachedState* cached); |
| |
| // If proof is valid then it sets the proof as valid (which persists the |
| // server config). If not, it closes the connection. |
| void DoVerifyProofComplete(QuicCryptoClientConfig::CachedState* cached); |
| |
| // Process SHLO message from the server. |
| void DoReceiveSHLO(const CryptoHandshakeMessage* in, |
| QuicCryptoClientConfig::CachedState* cached); |
| |
| // Start the proof verification if |server_id_| is https and |cached| has |
| // signature. |
| void DoInitializeServerConfigUpdate( |
| QuicCryptoClientConfig::CachedState* cached); |
| |
| // Called to set the proof of |cached| valid. Also invokes the session's |
| // OnProofValid() method. |
| void SetCachedProofValid(QuicCryptoClientConfig::CachedState* cached); |
| |
| QuicCryptoClientStream* stream_; |
| |
| QuicSession* session_; |
| |
| State next_state_; |
| // num_client_hellos_ contains the number of client hello messages that this |
| // connection has sent. |
| int num_client_hellos_; |
| |
| QuicCryptoClientConfig* const crypto_config_; |
| |
| // SHA-256 hash of the most recently sent CHLO. |
| std::string chlo_hash_; |
| |
| // Server's (hostname, port, is_https, privacy_mode) tuple. |
| const QuicServerId server_id_; |
| |
| // Generation counter from QuicCryptoClientConfig's CachedState. |
| uint64_t generation_counter_; |
| |
| // verify_context_ contains the context object that we pass to asynchronous |
| // proof verifications. |
| std::unique_ptr<ProofVerifyContext> verify_context_; |
| |
| // proof_verify_callback_ contains the callback object that we passed to an |
| // asynchronous proof verification. The ProofVerifier owns this object. |
| ProofVerifierCallbackImpl* proof_verify_callback_; |
| // proof_handler_ contains the callback object used by a quic client |
| // for proof verification. It is not owned by this class. |
| QuicCryptoClientStream::ProofHandler* proof_handler_; |
| |
| // These members are used to store the result of an asynchronous proof |
| // verification. These members must not be used after |
| // STATE_VERIFY_PROOF_COMPLETE. |
| bool verify_ok_; |
| std::string verify_error_details_; |
| std::unique_ptr<ProofVerifyDetails> verify_details_; |
| |
| QuicTime proof_verify_start_time_; |
| |
| int num_scup_messages_received_; |
| |
| bool encryption_established_; |
| bool handshake_confirmed_; |
| QuicReferenceCountedPointer<QuicCryptoNegotiatedParameters> |
| crypto_negotiated_params_; |
| }; |
| |
| } // namespace quic |
| |
| #endif // QUICHE_QUIC_CORE_QUIC_CRYPTO_CLIENT_HANDSHAKER_H_ |