/* Copyright (C) 2019-2021 Logaev Maxim (turbocat2001), GPLv2 */

#ifndef _SOCKET_H_
#define _SOCKET_H_

#include <stddef.h>
#include <sys/ksys.h>
#include <errno.h>

// Socket Types
#define SOCK_STREAM 1
#define SOCK_DGRAM 2
#define SOCK_RAW 3
 
// IP protocols
#define IPPROTO_IP 0
#define IPPROTO_ICMP 1
#define IPPROTO_TCP 6
#define IPPROTO_UDP 17
#define IPPROTO_RAW 255
 
// IP options
#define IP_TTL 2
 
// Address families
#define AF_UNSPEC 0
#define AF_LOCAL 1
#define AF_INET  2     // Default INET=IPv4
#define AF_INET4 2     // IPv4
#define AF_INET6 10    // IPv6

#define PF_UNSPEC AF_UNSPEC
#define PF_LOCAL  AF_LOCAL
#define PF_INET4  AF_INET4
#define PF_INET6  AF_INET6
 
// internal definition
#define AI_SUPPORTED 0x40F

// for system function 76
#define API_ETH (0<<16)
#define API_IPv4 (1<<16)
#define API_ICMP (2<<16)
#define API_UDP (3<<16)
#define API_TCP (4<<16)
#define API_ARP (5<<16)
#define API_PPPOE (6<<16)

// Socket flags for user calls
#define MSG_NOFLAG 0
#define MSG_PEEK 0x02
#define MSG_DONTWAIT 0x40
 
// Socket levels
#define SOL_SOCKET 0xffff

//Socket options
#define SO_BINDTODEVICE (1<<9)
#define SO_NONBLOCK (1<<31)

#define PORT(X) (X<<8)

#pragma pack(push,1)
struct sockaddr{
    unsigned short sin_family;
    unsigned short sin_port; 
    unsigned int sin_addr;
    unsigned long long sin_zero;
}; 

typedef struct{
  unsigned int level;
  unsigned int optionname;
  unsigned int optlenght;
  unsigned char options;
}optstruct;
#pragma pack(pop)

extern int _FUNC(socket)(int domain, int type, int protocol);
extern int _FUNC(close)(int socket);
extern int _FUNC(bind)(int socket, const struct sockaddr *addres, int addres_len);
extern int _FUNC(listen)(int socket, int backlog);
extern int _FUNC(connect)(int socket, const struct sockaddr* address, int socket_len);
extern int _FUNC(accept)(int socket, const struct sockaddr *address, int address_len);
extern int _FUNC(send)(int socket, const void *message, size_t msg_len, int flag);
extern int _FUNC(recv)(int socket, void *buffer, size_t buff_len, int flag);
extern int _FUNC(setsockopt)(int socket,const optstruct* opt);
extern int _FUNC(getsockopt)(int socket, optstruct* opt);
extern int _FUNC(socketpair)(int *socket1, int *socket2);

#endif //_SOCKET_H_