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 FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
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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