IcmpV6Layer.h

Go to the documentation of this file.

#ifndef PACKETPP_ICMPV6_LAYER
#define PACKETPP_ICMPV6_LAYER

#include "Layer.h"


namespace pcpp
{

enum class ICMPv6MessageType : int
{
    ICMPv6_UNKNOWN_MESSAGE = 0,
    ICMPv6_DESTINATION_UNREACHABLE = 1,
    ICMPv6_PACKET_TOO_BIG = 2,
    ICMPv6_TIME_EXCEEDED = 3,
    ICMPv6_PARAMETER_PROBLEM = 4,
    ICMPv6_PRIVATE_EXPERIMENTATION1 = 100,
    ICMPv6_PRIVATE_EXPERIMENTATION2 = 101,
    ICMPv6_RESERVED_EXPANSION_ERROR = 127,
    ICMPv6_ECHO_REQUEST = 128,
    ICMPv6_ECHO_REPLY = 129,
    ICMPv6_MULTICAST_LISTENER_QUERY = 130,
    ICMPv6_MULTICAST_LISTENER_REPORT = 131,
    ICMPv6_MULTICAST_LISTENER_DONE = 132,
    ICMPv6_ROUTER_SOLICITATION = 133,
    ICMPv6_ROUTER_ADVERTISEMENT = 134,
    ICMPv6_NEIGHBOR_SOLICITATION = 135,
    ICMPv6_NEIGHBOR_ADVERTISEMENT = 136,
    ICMPv6_REDIRECT_MESSAGE = 137,
    ICMPv6_ROUTER_RENUMBERING = 138,
    ICMPv6_ICMP_NODE_INFORMATION_QUERY = 139,
    ICMPv6_ICMP_NODE_INFORMATION_RESPONSE = 140,
    ICMPv6_INVERSE_NEIGHBOR_DISCOVERY_SOLICITATION_MESSAGE = 141,
    ICMPv6_INVERSE_NEIGHBOR_DISCOVERY_ADVERTISEMENT_MESSAGE = 142,
    ICMPv6_MULTICAST_LISTENER_DISCOVERY_REPORTS = 143,
    ICMPv6_HOME_AGENT_ADDRESS_DISCOVERY_REQUEST_MESSAGE = 144,
    ICMPv6_HOME_AGENT_ADDRESS_DISCOVERY_REPLY_MESSAGE = 145,
    ICMPv6_MOBILE_PREFIX_SOLICITATION = 146,
    ICMPv6_MOBILE_PREFIX_ADVERTISEMENT = 147,
    ICMPv6_CERTIFICATION_PATH_SOLICITATION = 148,
    ICMPv6_CERTIFICATION_PATH_ADVERTISEMENT = 149,
    ICMPv6_EXPERIMENTAL_MOBILITY = 150,
    ICMPv6_MULTICAST_ROUTER_ADVERTISEMENT = 151,
    ICMPv6_MULTICAST_ROUTER_SOLICITATION = 152,
    ICMPv6_MULTICAST_ROUTER_TERMINATION = 153,
    ICMPv6_RPL_CONTROL_MESSAGE = 155,
    ICMPv6_PRIVATE_EXPERIMENTATION3 = 200,
    ICMPv6_PRIVATE_EXPERIMENTATION4 = 201,
    ICMPv6_RESERVED_EXPANSION_INFORMATIONAL = 255
};

#pragma pack(push, 1)
struct icmpv6hdr
{
    uint8_t type;
    uint8_t code;
    uint16_t checksum;
};
#pragma pack(pop)

#pragma pack(push, 1)
typedef struct icmpv6_echo_hdr : icmpv6hdr
{
    uint16_t id;
    uint16_t sequence;
} icmpv6_echo_hdr;
#pragma pack(pop)

class IcmpV6Layer : public Layer
{
public:
    IcmpV6Layer(uint8_t *data, size_t dataLen, Layer *prevLayer, Packet *packet)
        : Layer(data, dataLen, prevLayer, packet) { m_Protocol = ICMPv6; }

    IcmpV6Layer(ICMPv6MessageType msgType, uint8_t code, const uint8_t *data, size_t dataLen);

    virtual ~IcmpV6Layer() {}

    static Layer *parseIcmpV6Layer(uint8_t *data, size_t dataLen, Layer *prevLayer, Packet *packet);

    bool isMessageOfType(ICMPv6MessageType type) const { return getMessageType() == type; }

    ICMPv6MessageType getMessageType() const;

    uint8_t getCode() const;

    uint16_t getChecksum() const;

    void parseNextLayer() {}

    size_t getHeaderLen() const { return m_DataLen; }

    void computeCalculateFields();

    OsiModelLayer getOsiModelLayer() const { return OsiModelNetworkLayer; }

    std::string toString() const;

protected:
    IcmpV6Layer() = default;

private:
    void calculateChecksum();
    icmpv6hdr *getIcmpv6Header() const { return (icmpv6hdr *)m_Data; }
};

class ICMPv6EchoLayer : public IcmpV6Layer
{
public:
    enum ICMPv6EchoType
    {
        REQUEST,
        REPLY
    };

    ICMPv6EchoLayer(uint8_t *data, size_t dataLen, Layer *prevLayer, Packet *packet)
        : IcmpV6Layer(data, dataLen, prevLayer, packet) {}

    ICMPv6EchoLayer(ICMPv6EchoType echoType, uint16_t id, uint16_t sequence, const uint8_t *data, size_t dataLen);

    virtual ~ICMPv6EchoLayer() {}

    uint16_t getIdentifier() const;

    uint16_t getSequenceNr() const;

    size_t getEchoDataLen() const { return m_DataLen - sizeof(icmpv6_echo_hdr); }

    uint8_t *getEchoDataPtr() const { return m_Data + sizeof(icmpv6_echo_hdr); }

    std::string toString() const;

private:
    icmpv6_echo_hdr *getEchoHeader() const { return (icmpv6_echo_hdr *)m_Data; }
};

} // namespace pcpp
#endif /* PACKETPP_ICMPV6_LAYER */