Ashin Walpola
0e9525162d
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
#ifndef VANETZA_CERTIFICATE_CACHE_HPP
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#define VANETZA_CERTIFICATE_CACHE_HPP
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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/v2/certificate.hpp>
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#include <boost/heap/binomial_heap.hpp>
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#include <list>
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#include <map>
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namespace vanetza
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{
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namespace security
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{
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namespace v2
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{
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/**
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* CertificateCache remembers validated certificates for some time.
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* This is necessary for certificate lookup when only its digest is known.
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*/
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class CertificateCache
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{
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public:
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CertificateCache(const Runtime& rt);
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/**
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* Puts a (validated) certificate into the cache.
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*
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* \param certificate certificate to add to the cache
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*/
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void insert(const Certificate& certificate);
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/**
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* Lookup certificates based on the passed HashedId8.
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*
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* \param id hash identifier of the certificate
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* \param type type of certificate to lookup
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* \return all stored certificates matching the passed identifier and type
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*/
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std::list<Certificate> lookup(const HashedId8& id, SubjectType type);
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/**
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* Number of currently stored certificates
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* \return cache size
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*/
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std::size_t size() const { return m_certificates.size(); }
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private:
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struct CachedCertificate;
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using map_type = std::multimap<HashedId8, CachedCertificate>;
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struct Expiry : public Clock::time_point
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{
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Expiry(Clock::time_point, map_type::iterator);
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const map_type::iterator certificate;
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};
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using heap_type = boost::heap::binomial_heap<Expiry, boost::heap::compare<std::greater<Expiry>>>;
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struct CachedCertificate
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{
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Certificate certificate;
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heap_type::handle_type handle;
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};
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const Runtime& m_runtime;
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heap_type m_expiries;
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map_type m_certificates;
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void drop_expired();
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bool is_expired(const Expiry&) const;
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void refresh(heap_type::handle_type&, Clock::duration);
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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 /* VANETZA_CERTIFICATE_CACHE_HPP */
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