97 lines
2.6 KiB
C++
97 lines
2.6 KiB
C++
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#pragma once
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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/peer_request_tracker.hpp>
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#include <boost/optional/optional.hpp>
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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 v3
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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 secured_message output message
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* \return header fields
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*/
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virtual void prepare_header(const SignRequest& req, SecuredMessage& secured_message) = 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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* Enqueue a certificate for P2P distribution.
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* \param id hash of requested certificate
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*/
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virtual void enqueue_p2p_request(HashedId3 id) = 0;
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/**
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* Discard a P2P certificate request.
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* \param id hash of requested certificate
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*/
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virtual void discard_p2p_request(HashedId3 id) = 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 V2.1.1
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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, CertificateProvider&);
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void prepare_header(const SignRequest& request, SecuredMessage& secured_message) 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 enqueue_p2p_request(HashedId3) override;
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void discard_p2p_request(HashedId3) 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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CertificateProvider& m_cert_provider;
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Clock::time_point m_cam_next_certificate;
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bool m_cert_requested;
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PeerRequestTracker m_incoming_requests;
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PeerRequestTracker m_outgoing_requests;
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};
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} // namespace v3
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} // namespace security
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} // namespace vanetza
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