Ashin Walpola
d107534eb2
obu-firmware builds against the vanetza-idf C-ITS library, which until now came from the colleague's microbu-esp32c5 tree beside the repository and was not tracked here, so a clone of this repository could not build the firmware it ships. The library alone is now part of obu-firmware, as obu-firmware/external/vanetza-idf: their external/vanetza-idf at commit cf4b99f, unchanged (9775 files; see its PROVENANCE.md). CMake takes it from there by default; -DVANETZA_IDF_DIR still points the build elsewhere. The rest of the colleague's tree (their own VAM firmware, PKI tooling, station-link Python tools, the V2X2MAP bridge) stays out of this repository and gitignored; nothing is pushed to their repository. NOTES.md, docs/06, TODO.md and the pcap verifier's usage line point at the new location.
79 lines
2.2 KiB
C++
79 lines
2.2 KiB
C++
#pragma once
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#include "keys.hpp"
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#include <boost/optional/optional.hpp>
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#include <boost/range/any_range.hpp>
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#include <string>
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namespace vanetza
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{
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namespace pki
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{
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/// \brief Lazy, single-pass view over canonical-hex credential names.
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using CredentialNameRange =
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boost::any_range<std::string, boost::single_pass_traversal_tag, std::string, std::ptrdiff_t>;
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class CredentialStorage
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{
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public:
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virtual ~CredentialStorage() = default;
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virtual void store(const PublicKey&, const PrivateKey&) = 0;
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virtual boost::optional<PrivateKey> fetch(const PublicKey&) = 0;
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virtual bool discard(const PublicKey&) = 0;
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/// \brief Lazy iteration over the canonical-hex name of every stored credential.
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virtual CredentialNameRange list() const = 0;
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/// \brief Discard a credential by its canonical-hex name; returns true iff one was removed.
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virtual bool discard(const std::string& canonical_hex) = 0;
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/// \brief Existence check by canonical-hex name; cheap, no key parsing.
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virtual bool contains(const std::string& canonical_hex) const = 0;
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};
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/**
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* \brief RAII handle that discards a credential on destruction unless commit() was called.
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*
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* Use to bind a freshly generated key to the lifetime of a protocol step:
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* store now, drop the key if anything throws before the step succeeds.
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*/
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class ScopedCredential
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{
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public:
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ScopedCredential(CredentialStorage& storage, PublicKey pub) : m_storage(&storage), m_public_key(std::move(pub))
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{
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}
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ScopedCredential(CredentialStorage& storage, PublicKey pub, const PrivateKey& priv) : ScopedCredential(storage, pub)
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{
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m_storage->store(m_public_key, priv);
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}
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~ScopedCredential()
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{
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if (m_storage) {
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m_storage->discard(m_public_key);
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}
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}
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// no copy
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ScopedCredential(const ScopedCredential&) = delete;
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ScopedCredential& operator=(const ScopedCredential&) = delete;
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// no move
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ScopedCredential(ScopedCredential&&) = delete;
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ScopedCredential& operator=(ScopedCredential&&) = delete;
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void commit()
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{
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m_storage = nullptr;
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}
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private:
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CredentialStorage* m_storage = nullptr;
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PublicKey m_public_key;
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};
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} // namespace pki
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} // namespace vanetza
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