pcap_session.h

#ifndef PCAP_SESSION_H
#define PCAP_SESSION_H

#if defined(__GNUC__) && __GNUC__ >= 8
#define DISABLE_WCAST_FUNCTION_TYPE _Pragma("GCC diagnostic push") _Pragma("GCC diagnostic ignored \"-Wcast-function-type\"")
#define DISABLE_WCAST_FUNCTION_TYPE_END _Pragma("GCC diagnostic pop")
#else
#define DISABLE_WCAST_FUNCTION_TYPE
#define DISABLE_WCAST_FUNCTION_TYPE_END
#endif

DISABLE_WCAST_FUNCTION_TYPE
#include <nan.h>
DISABLE_WCAST_FUNCTION_TYPE_END
#include <uv.h>
#include <pcap/pcap.h>

class PcapSession : public Nan::ObjectWrap {
public:
    static void Init(v8::Local<v8::Object> exports);

private:
    PcapSession();
    ~PcapSession();

    static void New(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void Open(bool live, const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void OpenLive(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void OpenOffline(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void Dispatch(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void StartPolling(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void Close(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void Stats(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void Inject(const Nan::FunctionCallbackInfo<v8::Value>& info);
    static void PacketReady(u_char *callback_p, const struct pcap_pkthdr* pkthdr, const u_char* packet);
    static void FinalizeClose(PcapSession *session);

    static void poll_handler(uv_poll_t* handle, int status, int events);

    Nan::Callback packet_ready_cb;
    static Nan::Persistent<v8::Function> constructor;

    struct bpf_program fp;
    bpf_u_int32 mask;
    bpf_u_int32 net;
    pcap_t *pcap_handle;
    pcap_dumper_t *pcap_dump_handle;
    char *buffer_data;
    size_t buffer_length;
    // size_t snap_length;
    char *header_data;

    uv_poll_t poll_handle;
    Nan::AsyncResource* poll_resource = NULL;
    bool poll_init = false;
};

#endif