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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef NET_QUIC_QUIC_CRYPTO_SERVER_STREAM_H_ | |
| 6 #define NET_QUIC_QUIC_CRYPTO_SERVER_STREAM_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "net/quic/crypto/crypto_handshake.h" | |
| 11 #include "net/quic/crypto/quic_crypto_server_config.h" | |
| 12 #include "net/quic/quic_config.h" | |
| 13 #include "net/quic/quic_crypto_stream.h" | |
| 14 | |
| 15 namespace net { | |
| 16 | |
| 17 class CachedNetworkParameters; | |
| 18 class CryptoHandshakeMessage; | |
| 19 class QuicCryptoServerConfig; | |
| 20 class QuicCryptoServerStream; | |
| 21 class QuicSession; | |
| 22 class SourceAddressTokens; | |
| 23 | |
| 24 namespace test { | |
| 25 class CryptoTestUtils; | |
| 26 } // namespace test | |
| 27 | |
| 28 // Receives a notification when the server hello (SHLO) has been ACKed by the | |
| 29 // peer. At this point we disable HANDSHAKE_MODE in the sent packet manager. | |
| 30 class NET_EXPORT_PRIVATE ServerHelloNotifier : public | |
| 31 QuicAckNotifier::DelegateInterface { | |
| 32 public: | |
| 33 explicit ServerHelloNotifier(QuicCryptoServerStream* stream) | |
| 34 : server_stream_(stream) {} | |
| 35 | |
| 36 // QuicAckNotifier::DelegateInterface implementation | |
| 37 void OnAckNotification(int num_retransmitted_packets, | |
| 38 int num_retransmitted_bytes, | |
| 39 QuicTime::Delta delta_largest_observed) override; | |
| 40 | |
| 41 private: | |
| 42 ~ServerHelloNotifier() override {} | |
| 43 | |
| 44 QuicCryptoServerStream* server_stream_; | |
| 45 | |
| 46 DISALLOW_COPY_AND_ASSIGN(ServerHelloNotifier); | |
| 47 }; | |
| 48 | |
| 49 class NET_EXPORT_PRIVATE QuicCryptoServerStream : public QuicCryptoStream { | |
| 50 public: | |
| 51 QuicCryptoServerStream(const QuicCryptoServerConfig& crypto_config, | |
| 52 QuicSession* session); | |
| 53 ~QuicCryptoServerStream() override; | |
| 54 | |
| 55 // Cancel any outstanding callbacks, such as asynchronous validation of client | |
| 56 // hello. | |
| 57 void CancelOutstandingCallbacks(); | |
| 58 | |
| 59 // CryptoFramerVisitorInterface implementation | |
| 60 void OnHandshakeMessage(const CryptoHandshakeMessage& message) override; | |
| 61 | |
| 62 // GetBase64SHA256ClientChannelID sets |*output| to the base64 encoded, | |
| 63 // SHA-256 hash of the client's ChannelID key and returns true, if the client | |
| 64 // presented a ChannelID. Otherwise it returns false. | |
| 65 bool GetBase64SHA256ClientChannelID(std::string* output) const; | |
| 66 | |
| 67 uint8 num_handshake_messages() const { return num_handshake_messages_; } | |
| 68 | |
| 69 int num_server_config_update_messages_sent() const { | |
| 70 return num_server_config_update_messages_sent_; | |
| 71 } | |
| 72 | |
| 73 // Sends the latest server config and source-address token to the client. | |
| 74 virtual void SendServerConfigUpdate( | |
| 75 const CachedNetworkParameters* cached_network_params); | |
| 76 | |
| 77 // Called by the ServerHello AckNotifier once the SHLO has been ACKed by the | |
| 78 // client. | |
| 79 void OnServerHelloAcked(); | |
| 80 | |
| 81 void set_previous_cached_network_params( | |
| 82 CachedNetworkParameters cached_network_params); | |
| 83 | |
| 84 const CachedNetworkParameters* previous_cached_network_params() const; | |
| 85 | |
| 86 protected: | |
| 87 virtual QuicErrorCode ProcessClientHello( | |
| 88 const CryptoHandshakeMessage& message, | |
| 89 const ValidateClientHelloResultCallback::Result& result, | |
| 90 CryptoHandshakeMessage* reply, | |
| 91 std::string* error_details); | |
| 92 | |
| 93 // Hook that allows the server to set QuicConfig defaults just | |
| 94 // before going through the parameter negotiation step. | |
| 95 virtual void OverrideQuicConfigDefaults(QuicConfig* config); | |
| 96 | |
| 97 private: | |
| 98 friend class test::CryptoTestUtils; | |
| 99 | |
| 100 class ValidateCallback : public ValidateClientHelloResultCallback { | |
| 101 public: | |
| 102 explicit ValidateCallback(QuicCryptoServerStream* parent); | |
| 103 // To allow the parent to detach itself from the callback before deletion. | |
| 104 void Cancel(); | |
| 105 | |
| 106 // From ValidateClientHelloResultCallback | |
| 107 void RunImpl(const CryptoHandshakeMessage& client_hello, | |
| 108 const Result& result) override; | |
| 109 | |
| 110 private: | |
| 111 QuicCryptoServerStream* parent_; | |
| 112 | |
| 113 DISALLOW_COPY_AND_ASSIGN(ValidateCallback); | |
| 114 }; | |
| 115 | |
| 116 // Invoked by ValidateCallback::RunImpl once initial validation of | |
| 117 // the client hello is complete. Finishes processing of the client | |
| 118 // hello message and handles handshake success/failure. | |
| 119 void FinishProcessingHandshakeMessage( | |
| 120 const CryptoHandshakeMessage& message, | |
| 121 const ValidateClientHelloResultCallback::Result& result); | |
| 122 | |
| 123 // crypto_config_ contains crypto parameters for the handshake. | |
| 124 const QuicCryptoServerConfig& crypto_config_; | |
| 125 | |
| 126 // Pointer to the active callback that will receive the result of | |
| 127 // the client hello validation request and forward it to | |
| 128 // FinishProcessingHandshakeMessage for processing. nullptr if no | |
| 129 // handshake message is being validated. | |
| 130 ValidateCallback* validate_client_hello_cb_; | |
| 131 | |
| 132 // Number of handshake messages received by this stream. | |
| 133 uint8 num_handshake_messages_; | |
| 134 | |
| 135 // Number of server config update (SCUP) messages sent by this stream. | |
| 136 int num_server_config_update_messages_sent_; | |
| 137 | |
| 138 // If the client provides CachedNetworkParameters in the STK in the CHLO, then | |
| 139 // store here, and send back in future STKs if we have no better bandwidth | |
| 140 // estimate to send. | |
| 141 scoped_ptr<CachedNetworkParameters> previous_cached_network_params_; | |
| 142 | |
| 143 // Contains any source address tokens which were present in the CHLO. | |
| 144 SourceAddressTokens previous_source_address_tokens_; | |
| 145 | |
| 146 DISALLOW_COPY_AND_ASSIGN(QuicCryptoServerStream); | |
| 147 }; | |
| 148 | |
| 149 } // namespace net | |
| 150 | |
| 151 #endif // NET_QUIC_QUIC_CRYPTO_SERVER_STREAM_H_ | |
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