90 lines
2.4 KiB
C++
90 lines
2.4 KiB
C++
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#ifndef SIGN_HEADER_POLICY_HPP_KJIIEGCH
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#define SIGN_HEADER_POLICY_HPP_KJIIEGCH
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#include <vanetza/common/clock.hpp>
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#include <vanetza/common/runtime.hpp>
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#include <vanetza/security/hashed_id.hpp>
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#include <vanetza/security/v2/header_field.hpp>
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#include <set>
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namespace vanetza
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{
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// forward declaration
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class PositionProvider;
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namespace security
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{
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// forward declarations
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class CertificateProvider;
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struct SignRequest;
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namespace v2
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{
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/**
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* SignHeaderPolicy is used while signing messages
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*
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* SignHeaderPolicy determines the header fields to be included in the secured message.
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* Other components can influence the policy's behaviour by calling one of its "report" methods.
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*/
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class SignHeaderPolicy
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{
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public:
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/**
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* Prepare header fields for next secured message.
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*
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* \param req signing request (including ITS-AID for example)
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* \param certprvd available certificates
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* \return header fields
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*/
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virtual std::list<HeaderField> prepare_header(const SignRequest& req, CertificateProvider& certprvd) = 0;
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/**
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* Mark certificate as unrecognized in next secured message
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* \param id hash of unknown certificate
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*/
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virtual void request_unrecognized_certificate(HashedId8 id) = 0;
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/**
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* Request a full certificate to be included in next secured message
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*/
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virtual void request_certificate() = 0;
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/**
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* Request a full certificate chain to be included in next secured message
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*/
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virtual void request_certificate_chain() = 0;
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virtual ~SignHeaderPolicy() = default;
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};
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/**
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* DefaultSignHeaderPolicy implements the default behaviour specified by ETSI TS 103 097 V1.2.1
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*/
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class DefaultSignHeaderPolicy : public SignHeaderPolicy
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{
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public:
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DefaultSignHeaderPolicy(const Runtime&, PositionProvider& positioning);
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std::list<HeaderField> prepare_header(const SignRequest& request, CertificateProvider& certificate_provider) override;
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void request_unrecognized_certificate(HashedId8 id) override;
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void request_certificate() override;
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void request_certificate_chain() override;
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private:
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const Runtime& m_runtime;
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PositionProvider& m_positioning;
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Clock::time_point m_cam_next_certificate;
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std::set<HashedId3> m_unknown_certificates;
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bool m_cert_requested;
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bool m_chain_requested;
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};
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} // namespace v2
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} // namespace security
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} // namespace vanetza
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#endif /* SIGN_HEADER_POLICY_HPP_KJIIEGCH */
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