48 lines
1.2 KiB
C++
48 lines
1.2 KiB
C++
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#include "asn1.hpp"
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#include "certificate_trust_list.hpp"
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#include "hashed_id8.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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boost::optional<std::string> lookup_dc_url(const std::filesystem::path& ectl_file, const HashedId8& root_ca)
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{
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struct DcUrlFinder : CtlVisitor
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{
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const HashedId8& root_ca;
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boost::optional<std::string> url;
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explicit DcUrlFinder(const HashedId8& ca) : root_ca(ca)
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{
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}
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void add_distribution_centre(const Vanetza_Security_DcEntry_t& dc) override
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{
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if (url) {
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return;
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}
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for (int j = 0; j < dc.cert.list.count; ++j) {
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if (dc.cert.list.array[j] && equals(*dc.cert.list.array[j], root_ca)) {
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url = to_string(dc.url);
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return;
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}
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}
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}
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};
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try {
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CertificateTrustList ctl = CertificateTrustList::from_file(ectl_file);
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DcUrlFinder finder { root_ca };
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ctl.visit_tlm_ctl(finder);
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return finder.url;
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} catch (const std::exception&) {
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// ECTL missing or malformed: treat as "no DC URL available"
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return boost::none;
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}
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}
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} // namespace pki
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} // namespace vanetza
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