fizz::extensions::TokenBindingServerExtension Class Reference

#include <TokenBindingServerExtension.h>

Inheritance diagram for fizz::extensions::TokenBindingServerExtension:

Public Member Functions
	TokenBindingServerExtension (const std::shared_ptr< TokenBindingContext > &tokenBindingContext)
std::vector< Extension >	getExtensions (const ClientHello &chlo) override
const auto &	getNegotiatedKeyParam ()
Public Member Functions inherited from fizz::ServerExtensions
virtual	~ServerExtensions ()=default

Private Member Functions
folly::Optional< TokenBindingProtocolVersion >	negotiateVersion (const TokenBindingProtocolVersion &clientPref)

Private Attributes
std::shared_ptr< TokenBindingContext >	tokenBindingContext_
folly::Optional< TokenBindingKeyParameters >	negotiatedKeyParam_

Detailed Description

Definition at line 19 of file TokenBindingServerExtension.h.

Constructor & Destructor Documentation

fizz::extensions::TokenBindingServerExtension::TokenBindingServerExtension ( const std::shared_ptr< TokenBindingContext > &  tokenBindingContext )

inlineexplicit

Definition at line 21 of file TokenBindingServerExtension.h.

      : tokenBindingContext_(tokenBindingContext) {}

Member Function Documentation

std::vector<Extension> fizz::extensions::TokenBindingServerExtension::getExtensions ( const ClientHello &  chlo )

inlineoverridevirtual

Returns a list of extensions to be added to EncryptedExtensions, given a ClientHello.

Implements fizz::ServerExtensions.

Definition at line 25 of file TokenBindingServerExtension.h.

References fizz::encodeExtension(), fizz::ClientHello::extensions, fizz::extensions::TokenBindingParameters::key_parameters_list, folly::gen::move, fizz::server::negotiate(), negotiatedKeyParam_, negotiateVersion(), params, tokenBindingContext_, and fizz::extensions::TokenBindingParameters::version.

                                                                       {
    std::vector<Extension> serverExtensions;
    auto params = getExtension<TokenBindingParameters>(chlo.extensions);
    if (params) {
      auto negotiatedVersion = negotiateVersion(params->version);
      auto negotiatedKeyParam = server::negotiate(
          tokenBindingContext_->getKeyParams(), params->key_parameters_list);
      if (negotiatedKeyParam && negotiatedVersion) {
        TokenBindingParameters negotiatedParams;
        negotiatedParams.version = *negotiatedVersion;
        negotiatedParams.key_parameters_list.push_back(*negotiatedKeyParam);
        serverExtensions.push_back(encodeExtension(negotiatedParams));
        negotiatedKeyParam_ = std::move(negotiatedKeyParam);
      }
    }
    return serverExtensions;
  }

const auto& fizz::extensions::TokenBindingServerExtension::getNegotiatedKeyParam ( )

inline

Definition at line 42 of file TokenBindingServerExtension.h.

References negotiatedKeyParam_.

                                      {
    return negotiatedKeyParam_;
  }

folly::Optional<TokenBindingProtocolVersion> fizz::extensions::TokenBindingServerExtension::negotiateVersion ( const TokenBindingProtocolVersion &  clientPref )

inlineprivate

For TokenBinding, the server can negotiate any version below the clients preferred version, inclusive.

Definition at line 54 of file TokenBindingServerExtension.h.

References folly::none.

Referenced by getExtensions().

                                                     {
    for (const auto& pref : tokenBindingContext_->getSupportedVersions()) {
      if (pref <= clientPref) {
        return pref;
      }
    }
    return folly::none;
  }

Member Data Documentation

folly::Optional<TokenBindingKeyParameters> fizz::extensions::TokenBindingServerExtension::negotiatedKeyParam_

private

Definition at line 48 of file TokenBindingServerExtension.h.

Referenced by getExtensions(), and getNegotiatedKeyParam().

std::shared_ptr<TokenBindingContext> fizz::extensions::TokenBindingServerExtension::tokenBindingContext_

private

Definition at line 47 of file TokenBindingServerExtension.h.

Referenced by getExtensions().

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The documentation for this class was generated from the following file:

• proxygen/fizz/fizz/extensions/tokenbinding/TokenBindingServerExtension.h