87 lines
2.9 KiB
C++
87 lines
2.9 KiB
C++
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#include <vanetza/common/position_fix.hpp>
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#include <vanetza/geodesy/country_database.hpp>
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#include <vanetza/geodesy/m49_code.hpp>
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#include <vanetza/asn1/security_profile.hpp>
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#include VANETZA_ASN1_SECURITY_HEADER(IdentifiedRegion.h)
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#include VANETZA_ASN1_SECURITY_HEADER(SequenceOfIdentifiedRegion.h)
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#include <vanetza/security/v3/asn1_types.hpp>
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#include <vanetza/security/v3/distance.hpp>
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#include <vanetza/security/v3/geometry.hpp>
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#include <vanetza/security/v3/location_checker.hpp>
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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 v3
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{
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bool AllowLocationChecker::valid_at_location(const asn1::EtsiTs103097Certificate&, const PositionFix&) const
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{
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return true;
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}
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bool DenyLocationChecker::valid_at_location(const asn1::EtsiTs103097Certificate&, const PositionFix&) const
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{
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return false;
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}
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bool DefaultLocationChecker::valid_at_location(const asn1::EtsiTs103097Certificate& cert, const PositionFix& location) const
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{
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const asn1::GeographicRegion* region = cert.toBeSigned.region;
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if (region) {
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switch (region->present) {
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case Vanetza_Security_GeographicRegion_PR_circularRegion:
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return is_inside(location, region->choice.circularRegion);
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case Vanetza_Security_GeographicRegion_PR_rectangularRegion:
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return is_inside(location, region->choice.rectangularRegion);
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case Vanetza_Security_GeographicRegion_PR_polygonalRegion:
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return is_inside(location, region->choice.polygonalRegion);
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case Vanetza_Security_GeographicRegion_PR_identifiedRegion:
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return check_identified_region(location, region->choice.identifiedRegion);
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default:
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// unknown or future region restriction type — reject conservatively
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return false;
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}
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} else {
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// no region restriction applies
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return true;
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}
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}
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bool DefaultLocationChecker::check_identified_region(const PositionFix& location, const Vanetza_Security_SequenceOfIdentifiedRegion& seq) const
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{
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if (!country_db_ || country_db_->empty())
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{
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// lacking database for country checks
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return permissive_identified_region_;
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}
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// reject any region by default
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bool accepted = false;
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for (int i = 0; i < seq.list.count; ++i) {
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const auto* entry = seq.list.array[i];
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if (!entry) {
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continue;
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}
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if (entry->present == Vanetza_Security_IdentifiedRegion_PR_countryOnly) {
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geodesy::M49Code code(static_cast<uint16_t>(entry->choice.countryOnly));
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geodesy::GeodeticPosition pos(location.latitude, location.longitude);
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if (country_db_->is_inside(code, pos)) {
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return true;
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}
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} else {
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// may accept because of unsupported identified region
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accepted = permissive_identified_region_;
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}
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}
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return accepted;
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}
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} // namespace v3
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} // namespace security
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} // namespace vanetza
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