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.
77 lines
2.0 KiB
C++
77 lines
2.0 KiB
C++
#include "crl_store.hpp"
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#include "certificate_revocation_list.hpp"
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#include "filesystem.hpp"
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#include "hexstring.hpp"
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#include "security_module.hpp"
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namespace vanetza
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{
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namespace pki
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{
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CrlFilesystemStore::CrlFilesystemStore(std::shared_ptr<SecurityModule> security, const std::filesystem::path& root) :
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m_security(security), m_root(root)
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{
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std::filesystem::create_directories(m_root);
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for (const auto& entry : std::filesystem::directory_iterator(m_root)) {
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if (!entry.is_regular_file() || entry.path().extension() != ".crl") {
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continue;
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}
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ByteBuffer buf = read(entry.path());
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CertificateRevocationList crl;
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if (crl.decode(buf)) {
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index(crl);
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}
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}
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}
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bool CrlFilesystemStore::store(const CertificateRevocationList& crl)
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{
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auto issuer = index(crl);
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if (!issuer) {
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return false;
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}
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write(filename(*issuer), crl.encode());
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return true;
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}
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bool CrlFilesystemStore::is_revoked(const security::HashedId8& issuer, const security::HashedId8& cert) const
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{
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auto it = m_revoked.find(issuer);
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if (it == m_revoked.end()) {
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return false;
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}
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return it->second.count(cert) != 0;
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}
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std::filesystem::path CrlFilesystemStore::filename(const HashedId8& id) const
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{
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return m_root / (hexstring(id.octets) + ".crl");
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}
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boost::optional<HashedId8> CrlFilesystemStore::index(const CertificateRevocationList& crl)
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{
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auto issuer = crl.get_hashed_id8(*m_security);
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if (!issuer) {
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return boost::none;
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}
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auto entries = crl.revoked_entries();
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if (!entries) {
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return boost::none;
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}
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// Empty CRL is valid: it withdraws any prior revocations from this issuer.
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// Erase the existing bucket and only create a new one if there's content.
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m_revoked.erase(issuer->octets);
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if (!entries->empty()) {
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auto& bucket = m_revoked[issuer->octets];
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for (const auto& cert : *entries) {
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bucket.insert(cert.octets);
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}
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}
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return issuer;
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}
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} // namespace pki
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} // namespace vanetza
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