Set Token-Binding HTTP header

net/socket/ssl_client_socket_openssl.h

 // 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 NET_SOCKET_SSL_CLIENT_SOCKET_OPENSSL_H_
 #define NET_SOCKET_SSL_CLIENT_SOCKET_OPENSSL_H_
 
 #include <openssl/base.h>
 #include <openssl/ssl.h>
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/compiler_specific.h"
+#include "base/containers/mru_cache.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "net/base/completion_callback.h"
 #include "net/base/io_buffer.h"
 #include "net/cert/cert_verifier.h"
 #include "net/cert/cert_verify_result.h"
 #include "net/cert/ct_verify_result.h"
 #include "net/socket/client_socket_handle.h"
 #include "net/socket/ssl_client_socket.h"
 #include "net/ssl/channel_id_service.h"
 #include "net/ssl/openssl_ssl_util.h"
 #include "net/ssl/ssl_client_cert_type.h"
 #include "net/ssl/ssl_config_service.h"
 #include "net/ssl/ssl_failure_state.h"
 
 namespace net {
 
 class CertVerifier;
 class CTVerifier;
 class SSLCertRequestInfo;
 class SSLInfo;
 class SSLPrivateKey;
 
+typedef base::MRUCache<std::string, std::vector<uint8_t>> SignedEkmMap;
+
 // An SSL client socket implemented with OpenSSL.
 class SSLClientSocketOpenSSL : public SSLClientSocket {
  public:
   // Takes ownership of the transport_socket, which may already be connected.
   // The given hostname will be compared with the name(s) in the server's
   // certificate during the SSL handshake.  ssl_config specifies the SSL
   // settings.
   SSLClientSocketOpenSSL(scoped_ptr<ClientSocketHandle> transport_socket,
                          const HostPortPair& host_and_port,
                          const SSLConfig& ssl_config,
                          const SSLClientSocketContext& context);
   ~SSLClientSocketOpenSSL() override;
 
   const HostPortPair& host_and_port() const { return host_and_port_; }
   const std::string& ssl_session_cache_shard() const {
     return ssl_session_cache_shard_;
   }
 
   // Export ssl key log files if env variable is not set.
   static void SetSSLKeyLogFile(const std::string& ssl_keylog_file);
 
   // SSLClientSocket implementation.
   void GetSSLCertRequestInfo(SSLCertRequestInfo* cert_request_info) override;
   NextProtoStatus GetNextProto(std::string* proto) const override;
   ChannelIDService* GetChannelIDService() const override;
+  int GetSignedEKMForTokenBinding(crypto::ECPrivateKey* key,
+                                  std::vector<uint8_t>* out) override;
   SSLFailureState GetSSLFailureState() const override;
 
   // SSLSocket implementation.
   int ExportKeyingMaterial(const base::StringPiece& label,
                            bool has_context,
                            const base::StringPiece& context,
                            unsigned char* out,
                            unsigned int outlen) override;
   int GetTLSUniqueChannelBinding(std::string* out) override;
 
@@ skipping 209 matching lines @@
   base::TimeTicks start_cert_verification_time_;
 
   // Certificate Transparency: Verifier and result holder.
   ct::CTVerifyResult ct_verify_result_;
   CTVerifier* cert_transparency_verifier_;
 
   // The service for retrieving Channel ID keys.  May be NULL.
   ChannelIDService* channel_id_service_;
   bool tb_was_negotiated_;
   TokenBindingParam tb_negotiated_param_;
+  SignedEkmMap tb_signed_ekm_map_;
 
   // OpenSSL stuff
   SSL* ssl_;
   BIO* transport_bio_;
 
   scoped_ptr<ClientSocketHandle> transport_;
   const HostPortPair host_and_port_;
   SSLConfig ssl_config_;
   // ssl_session_cache_shard_ is an opaque string that partitions the SSL
   // session cache. i.e. sessions created with one value will not attempt to
@@ skipping 43 matching lines @@
   // pinning failure. It is a (somewhat) human-readable string.
   std::string pinning_failure_log_;
 
   BoundNetLog net_log_;
   base::WeakPtrFactory<SSLClientSocketOpenSSL> weak_factory_;
 };
 
 }  // namespace net
 
 #endif  // NET_SOCKET_SSL_CLIENT_SOCKET_OPENSSL_H_