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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 <cstdint>
#include <memory>
#include <string>
#include "net/third_party/quiche/src/quic/core/crypto/crypto_handshake.h"
#include "net/third_party/quiche/src/quic/core/crypto/quic_compressed_certs_cache.h"
#include "net/third_party/quiche/src/quic/core/crypto/quic_crypto_server_config.h"
#include "net/third_party/quiche/src/quic/core/quic_config.h"
#include "net/third_party/quiche/src/quic/core/quic_crypto_handshaker.h"
#include "net/third_party/quiche/src/quic/core/quic_crypto_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 {
class CachedNetworkParameters;
class CryptoHandshakeMessage;
class QuicCryptoServerConfig;
class QuicCryptoServerStreamBase;
// TODO(alyssar) see what can be moved out of QuicCryptoServerStream with
// various code and test refactoring.
class QUIC_EXPORT_PRIVATE QuicCryptoServerStreamBase : public QuicCryptoStream {
explicit QuicCryptoServerStreamBase(QuicSession* session);
virtual ~Helper() {}
// Returns true if |message|, which was received on |self_address| is
// acceptable according to the visitor's policy. Otherwise, returns false
// and populates |error_details|.
virtual bool CanAcceptClientHello(const CryptoHandshakeMessage& message,
const QuicSocketAddress& client_address,
const QuicSocketAddress& peer_address,
const QuicSocketAddress& self_address,
std::string* error_details) const = 0;
~QuicCryptoServerStreamBase() override {}
// Cancel any outstanding callbacks, such as asynchronous validation of client
// hello.
virtual void CancelOutstandingCallbacks() = 0;
// GetBase64SHA256ClientChannelID sets |*output| to the base64 encoded,
// SHA-256 hash of the client's ChannelID key and returns true, if the client
// presented a ChannelID. Otherwise it returns false.
virtual bool GetBase64SHA256ClientChannelID(std::string* output) const = 0;
virtual int NumServerConfigUpdateMessagesSent() const = 0;
// Sends the latest server config and source-address token to the client.
virtual void SendServerConfigUpdate(
const CachedNetworkParameters* cached_network_params) = 0;
// Returns true if the connection was a successful 0-RTT resumption.
virtual bool IsZeroRtt() const = 0;
// Returns true if the connection was the result of a resumption handshake,
// whether 0-RTT or not.
virtual bool IsResumption() const = 0;
// Returns true if the client attempted a resumption handshake, whether or not
// the resumption actually occurred.
virtual bool ResumptionAttempted() const = 0;
virtual const CachedNetworkParameters* PreviousCachedNetworkParams()
const = 0;
virtual void SetPreviousCachedNetworkParams(
CachedNetworkParameters cached_network_params) = 0;
// NOTE: Indicating that the Expect-CT header should be sent here presents
// a layering violation to some extent. The Expect-CT header only applies to
// HTTP connections, while this class can be used for non-HTTP applications.
// However, it is exposed here because that is the only place where the
// configuration for the certificate used in the connection is accessible.
virtual bool ShouldSendExpectCTHeader() const = 0;
// Returns the Details from the latest call to ProofSource::GetProof or
// ProofSource::ComputeTlsSignature. Returns nullptr if no such call has been
// made. The Details are owned by the QuicCryptoServerStreamBase and the
// pointer is only valid while the owning object is still valid.
virtual const ProofSource::Details* ProofSourceDetails() const = 0;
// Creates an appropriate QuicCryptoServerStream for the provided parameters,
// including the version used by |session|. |crypto_config|, |session|, and
// |helper| must all outlive the stream. The caller takes ownership of the
// returned object.
QUIC_EXPORT_PRIVATE std::unique_ptr<QuicCryptoServerStreamBase>
CreateCryptoServerStream(const QuicCryptoServerConfig* crypto_config,
QuicCompressedCertsCache* compressed_certs_cache,
QuicSession* session,
QuicCryptoServerStreamBase::Helper* helper);
} // namespace quic