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 FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
129 lines
3.8 KiB
C++
129 lines
3.8 KiB
C++
#ifndef SECURED_MESSAGE_HPP_MO3HBSXG
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#define SECURED_MESSAGE_HPP_MO3HBSXG
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#include <vanetza/common/its_aid.hpp>
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#include <vanetza/security/v2/header_field.hpp>
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#include <vanetza/security/v2/trailer_field.hpp>
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#include <vanetza/security/v2/payload.hpp>
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#include <cstdint>
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#include <list>
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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 v2
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{
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/// SecuredMessage as specified in TS 103 097 v1.2.1, section 5.1
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struct SecuredMessage
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{
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std::list<HeaderField> header_fields;
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std::list<TrailerField> trailer_fields;
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Payload payload;
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uint8_t protocol_version() const { return 2; }
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/**
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* Fetch pointer to first matching header field
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* \param type HeaderField has to match given type
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* \return matching HeaderField or nullptr
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*/
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HeaderField* header_field(HeaderFieldType);
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/**
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* Fetch read-only pointer to first machting header field
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* \param type requested header field type
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* \return matching header field or nullptr
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*/
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const HeaderField* header_field(HeaderFieldType type) const;
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/**
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* Fetch pointer to first matching trailer field
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* \param type TrailerField has to match given type
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* \return matching TrailerField or nullptr
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*/
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TrailerField* trailer_field(TrailerFieldType);
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/**
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* Fetch read-only pointer of first matching trailer field
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* \param type request trailer field type
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* \return matching trailer field or nullptr
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*/
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const TrailerField* trailer_field(TrailerFieldType type) const;
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template<HeaderFieldType T>
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typename header_field_type<T>::type* header_field()
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{
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using field_type = typename header_field_type<T>::type;
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HeaderField* field = header_field(T);
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return boost::get<field_type>(field);
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}
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template<HeaderFieldType T>
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const typename header_field_type<T>::type* header_field() const
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{
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using field_type = typename header_field_type<T>::type;
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const HeaderField* field = header_field(T);
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return boost::get<field_type>(field);
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}
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template<TrailerFieldType T>
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typename trailer_field_type<T>::type* trailer_field()
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{
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using field_type = typename trailer_field_type<T>::type;
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TrailerField* field = trailer_field(T);
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return boost::get<field_type>(field);
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}
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template<TrailerFieldType T>
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const typename trailer_field_type<T>::type* trailer_field() const
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{
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using field_type = typename trailer_field_type<T>::type;
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const TrailerField* field = trailer_field(T);
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return boost::get<field_type>(field);
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}
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};
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/**
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* \brief Calculates size of a SecuredMessage object
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* \return size_t containing the number of octets needed to serialize the object
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*/
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size_t get_size(const SecuredMessage&);
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/**
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* \brief Serializes a SecuredMessage into a binary archive
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*/
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void serialize(OutputArchive& ar, const SecuredMessage& message);
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/**
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* \brief Deserializes a SecuredMessage from a binary archive
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* \return size of deserialized SecuredMessage
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*/
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size_t deserialize(InputArchive& ar, SecuredMessage& message);
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/**
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* \brief Create ByteBuffer equivalent of SecuredMessage suitable for signature creation
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*
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* ByteBuffer contains message's version, header_fields and payload.
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* Additionally, the length of trailer fields and the type of the signature is appended.
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*
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* \param message
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* \param trailer_fields only trailer fields up to signature will be included in byte buffer
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* \return serialized data fields relevant for signature creation
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*/
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ByteBuffer convert_for_signing(const SecuredMessage& message, const std::list<TrailerField>& trailer_fields);
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/**
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* \brief Get ITS-AID from message
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* \param msg secured message object
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* \return found ITS-AID or 0
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*/
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ItsAid get_its_aid(const SecuredMessage& msg);
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} // namespace v2
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} // namespace security
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} // namespace vanetza
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#endif /* SECURED_MESSAGE_HPP_MO3HBSXG */
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