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.
150 lines
4.6 KiB
C++
150 lines
4.6 KiB
C++
#ifndef INDICATION_CONTEXT_HPP_UWOD2BSQ
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#define INDICATION_CONTEXT_HPP_UWOD2BSQ
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#include <vanetza/geonet/data_indication.hpp>
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#include <vanetza/geonet/link_layer.hpp>
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#include <vanetza/geonet/packet.hpp>
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#include <vanetza/geonet/parser.hpp>
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#include <vanetza/geonet/pdu.hpp>
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#include <vanetza/geonet/variant_pdu.hpp>
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#include <vanetza/security/secured_message.hpp>
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#include <boost/optional/optional.hpp>
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namespace vanetza
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{
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namespace geonet
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{
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/**
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* IndicationContext is used for parsing incoming packets.
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* For each indication (packet reception) a new context should be created.
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*/
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class IndicationContext
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{
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public:
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using UpPacketPtr = std::unique_ptr<UpPacket>;
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using SecuredMessage = security::SecuredMessage;
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using LinkLayer = geonet::LinkLayer;
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// parser commands
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virtual const BasicHeader* parse_basic() = 0;
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virtual const CommonHeader* parse_common() = 0;
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virtual const SecuredMessage* parse_secured() = 0;
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virtual boost::optional<HeaderConstRefVariant> parse_extended(HeaderType) = 0;
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// access to data structures related to indication
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virtual const VariantPdu& pdu() const = 0;
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virtual VariantPdu& pdu() = 0;
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virtual const LinkLayer& link_layer() const = 0;
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virtual DataIndication& service_primitive() = 0;
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/**
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* Finish usage of IndicationContext and release owned packet
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* \return owned packet
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*/
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virtual UpPacketPtr finish() = 0;
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virtual ~IndicationContext() = default;
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};
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/**
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* IndicationContextBasic represents the first phase of packet reception,
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* i.e. it is the context for unsecured headers
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*/
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class IndicationContextBasic : public IndicationContext
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{
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public:
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IndicationContextBasic(const LinkLayer& ll) : m_link_layer(ll) {}
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const LinkLayer& link_layer() const override { return m_link_layer; }
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DataIndication& service_primitive() override { return m_service_primitive; }
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VariantPdu& pdu() override { return m_pdu; }
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const VariantPdu& pdu() const override { return m_pdu; }
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protected:
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LinkLayer m_link_layer;
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DataIndication m_service_primitive;
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VariantPdu m_pdu;
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};
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class IndicationContextDeserialize : public IndicationContextBasic
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{
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public:
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IndicationContextDeserialize(UpPacketPtr, CohesivePacket&, const LinkLayer&);
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const BasicHeader* parse_basic() override;
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const CommonHeader* parse_common() override;
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const SecuredMessage* parse_secured() override;
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boost::optional<HeaderConstRefVariant> parse_extended(HeaderType) override;
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UpPacketPtr finish() override;
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private:
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UpPacketPtr m_packet;
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CohesivePacket& m_cohesive_packet;
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Parser m_parser;
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};
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class IndicationContextCast : public IndicationContextBasic
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{
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public:
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IndicationContextCast(UpPacketPtr, ChunkPacket&, const LinkLayer&);
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const BasicHeader* parse_basic() override;
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const CommonHeader* parse_common() override;
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const SecuredMessage* parse_secured() override;
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boost::optional<HeaderConstRefVariant> parse_extended(HeaderType) override;
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UpPacketPtr finish() override;
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private:
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UpPacketPtr m_packet;
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};
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/**
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* IndicationContextSecured is used for the (optional) second phase of packet reception,
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* i.e. handling the payload contained in a secured message's payload
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*/
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class IndicationContextSecured : public IndicationContext
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{
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public:
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IndicationContextSecured(IndicationContextBasic& parent) : m_parent(parent) {}
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const LinkLayer& link_layer() const override { return m_parent.link_layer(); }
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DataIndication& service_primitive() override { return m_parent.service_primitive(); }
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VariantPdu& pdu() override { return m_parent.pdu(); }
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const VariantPdu& pdu() const override { return m_parent.pdu(); }
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const BasicHeader* parse_basic() override { return nullptr; }
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const SecuredMessage* parse_secured() override { return nullptr; }
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protected:
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IndicationContextBasic& m_parent;
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};
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class IndicationContextSecuredDeserialize : public IndicationContextSecured
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{
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public:
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IndicationContextSecuredDeserialize(IndicationContextBasic&, CohesivePacket&);
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const CommonHeader* parse_common() override;
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boost::optional<HeaderConstRefVariant> parse_extended(HeaderType) override;
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UpPacketPtr finish() override;
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private:
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CohesivePacket& m_packet;
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Parser m_parser;
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};
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class IndicationContextSecuredCast : public IndicationContextSecured
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{
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public:
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IndicationContextSecuredCast(IndicationContextBasic&, ChunkPacket&);
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const CommonHeader* parse_common() override;
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boost::optional<HeaderConstRefVariant> parse_extended(HeaderType) override;
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UpPacketPtr finish() override;
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private:
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UpPacketPtr m_packet;
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};
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} // namespace geonet
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} // namespace vanetza
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#endif /* INDICATION_CONTEXT_HPP_UWOD2BSQ */
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