/* ckotcp.c
 *
 * TCP/IP interface for OS/2 C-Kermit
 *
 * Author:  Kai-Uwe Rommel <rommel@ars.muc.de>
 * Created: Wed May 25 1994
 */

/* macro functions */

#ifndef CK_DLL
#define byteswap(x)       ((((x) & 0xFF) << 8) | (((x) >> 8) & 0xFF))
#define htons(x)          (byteswap(x))
#define ntohs(x)          (byteswap(x))
#define bzero(x, y)       memset((x), 0, (y))
#define bcopy(x, y, z)    memcpy((y), (x), (z))
#endif

/* defines */

#ifndef CK_DLL
#define AF_INET           CK_AF_INET
#define SOCK_STREAM       CK_SOCK_STREAM
#define FIONREAD          CK_FIONREAD
#define FIONBIO           CK_FIONBIO
#define SOL_SOCKET        CK_SOL_SOCKET
#define SO_OOBINLINE      CK_SO_OOBINLINE
#endif

#define CK_AF_INET        2
#define CK_SOCK_STREAM    1

#define CK_FIONREAD       1
#define CK_FIONBIO        2

#define CK_SOL_SOCKET     1
#define CK_SO_OOBINLINE   1

/* type definitions */

#ifndef CK_DLL
typedef char *caddr_t;
#define in_addr           ck_in_addr
#define ck_sockaddr_in    sockaddr_in
#define ck_sockaddr       sockaddr
#define ck_hostent        hostent
#define ck_servent        servent
#endif

struct ck_in_addr
{
  unsigned long s_addr;
};

struct ck_sockaddr_in 
{
  short sin_family;
  unsigned short sin_port;
  struct ck_in_addr sin_addr;
  char sin_zero[8];
};

struct ck_sockaddr
{
  unsigned short sa_family;
  char sa_data[14];
};

struct ck_hostent
{
  char *h_name;
  char **h_aliases;
  int h_addrtype;
  int h_length;
  char *h_address;
#ifndef CK_DLL
#define h_addr h_address
#endif
};

struct ck_servent
{
  char *s_name;
  char **s_aliases;
  int s_port;
  char *s_proto;
};

/* prototypes */

#ifdef CK_DLL
  #ifdef __32BIT__
  #define ENTRY _System _Export
  #else
  #define ENTRY _export _loadds
  #endif
#else
  #ifdef __32BIT__
  #define SYSTEM _System
  #else
  #define SYSTEM
  #endif
  #define ck_sockinit       (* SYSTEM sockinit)
  #define ck_connect        (* SYSTEM connect)
  #define ck_ioctl          (* SYSTEM ioctl)
  #define ck_recv           (* SYSTEM recv)
  #define ck_select         (* SYSTEM select)
  #define ck_send           (* SYSTEM send)
  #define ck_setsockopt     (* SYSTEM setsockopt)
  #define ck_socket         (* SYSTEM socket)
  #define ck_soclose        (* SYSTEM soclose)
  #define ck_gethostbyname  (* SYSTEM gethostbyname)
  #define ck_getservbyname  (* SYSTEM getservbyname)
  #define ck_inet_addr      (* SYSTEM inet_addr)
  #define ck_inet_ntoa      (* SYSTEM inet_ntoa)
#endif

#ifndef ENTRY
#define ENTRY
#endif

#ifndef EXTERN
#define EXTERN extern
#endif

EXTERN int ENTRY ck_sockinit(void);

EXTERN int ENTRY ck_connect(int socket, struct ck_sockaddr *name, int namelen);
EXTERN int ENTRY ck_ioctl(int socket, int cmd, char *data, int length);
EXTERN int ENTRY ck_recv(int socket, char *buffer, int length, int flags);
EXTERN int ENTRY ck_select(int *fds, int nread, int write, int except, long timeout);
EXTERN int ENTRY ck_send(int socket, char *buffer, int length, int flags);
EXTERN int ENTRY ck_setsockopt(int socket, int level, int optname, 
			       char *optvalue, int optlength);
EXTERN int ENTRY ck_socket(int domain, int type, int protocol);
EXTERN int ENTRY ck_soclose(int socket);

EXTERN struct ck_hostent * ENTRY ck_gethostbyname(char *name);
EXTERN struct ck_servent * ENTRY ck_getservbyname(char *name, char *protocol);
EXTERN unsigned long ENTRY ck_inet_addr(char *cp);
EXTERN char * ENTRY ck_inet_ntoa(struct ck_in_addr in);

/* end of ckotcp.h */