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/* $Id$
Part of SWI-Prolog
Author: Jan Wielemaker
E-mail: wielemak@science.uva.nl
WWW: http://www.swi-prolog.org
Copyright (C): 1985-2007, University of Amsterdam
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
As a special exception, if you link this library with other files,
compiled with a Free Software compiler, to produce an executable, this
library does not by itself cause the resulting executable to be covered
by the GNU General Public License. This exception does not however
invalidate any other reasons why the executable file might be covered by
the GNU General Public License.
*/
#ifndef H_NONBLOCKIO_INCLUDED
#define H_NONBLOCKIO_INCLUDED
/*******************************
* GET REQUIRED HEADERS *
*******************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <SWI-Stream.h>
#include <SWI-Prolog.h>
#ifdef __WINDOWS__
#include <io.h>
#include <winsock2.h>
typedef size_t socklen_t;
#else /*__WINDOWS__*/
#include <sys/types.h>
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h>
#endif
#ifdef HAVE_H_ERRNO
extern int h_errno;
#else
#define h_errno errno
#endif
#ifndef HAVE_SOCKLEN_T
#define socklen_t size_t
#endif
typedef int SOCKET;
#endif /*__WINDOWS__*/
typedef enum
{ TCP_ERRNO,
TCP_HERRNO
} nbio_error_map;
typedef enum /* nbio_setopt() commands */
{ TCP_NONBLOCK,
TCP_REUSEADDR,
TCP_NO_DELAY,
TCP_DISPATCH,
TCP_INSTREAM,
TCP_OUTSTREAM,
UDP_BROADCAST,
NBIO_END
} nbio_option;
typedef enum
{ REQ_NONE = 0, /* no request pending */
REQ_ACCEPT,
REQ_CONNECT,
REQ_READ,
REQ_WRITE,
REQ_RECVFROM,
REQ_SENDTO
} nbio_request;
/* nbio_get_flags() mask */
#define PLSOCK_INSTREAM 0x001
#define PLSOCK_OUTSTREAM 0x002
#define PLSOCK_BIND 0x004 /* What have we done? */
#define PLSOCK_LISTEN 0x008
#define PLSOCK_CONNECT 0x010
#define PLSOCK_ACCEPT 0x020 /* Set on accepted sockets */
#define PLSOCK_NONBLOCK 0x040 /* Set to non-blocking mode */
#define PLSOCK_DISPATCH 0x080 /* do not dispatch events */
#define PLSOCK_CLOSE_SEEN 0x100 /* FD_CLOSE seen */
#define PLSOCK_EOF_SEEN 0x200 /* Seen end-of-file */
#define PLSOCK_WAITING 0x400 /* using nbio_wait() */
typedef int nbio_sock_t; /* socket handle (not a file-descr) */
typedef struct _plsocket *plsocket_ptr; /* wrapped socket */
/*******************************
* BASIC FUNCTIONS *
*******************************/
#ifdef HAVE_DECLSPEC
#define NBIO_EXPORT(type) __declspec(dllexport) type
#else
#define NBIO_EXPORT(type) extern type
#endif
NBIO_EXPORT(int) nbio_init(const char *module);
NBIO_EXPORT(int) nbio_cleanup(void);
NBIO_EXPORT(int) nbio_debug(int level);
NBIO_EXPORT(nbio_sock_t)
nbio_socket(int domain, int type, int protocol);
NBIO_EXPORT(int) nbio_connect(nbio_sock_t socket,
const struct sockaddr *serv_addr,
size_t addrlen);
NBIO_EXPORT(int) nbio_bind(nbio_sock_t socket,
struct sockaddr *my_addr,
size_t addrlen);
NBIO_EXPORT(int) nbio_listen(nbio_sock_t socket, int backlog);
NBIO_EXPORT(nbio_sock_t)
nbio_accept(nbio_sock_t master,
struct sockaddr *addr,
socklen_t *addrlen);
extern ssize_t nbio_read(nbio_sock_t socket, char *buf, size_t bufSize);
extern ssize_t nbio_write(nbio_sock_t socket, char *buf, size_t bufSize);
NBIO_EXPORT(int) nbio_closesocket(nbio_sock_t socket);
extern int nbio_close_input(nbio_sock_t socket);
extern int nbio_close_output(nbio_sock_t socket);
extern ssize_t nbio_recvfrom(int socket, void *buf, size_t bufSize, int flags,
struct sockaddr *from, socklen_t *fromlen);
extern ssize_t nbio_sendto(nbio_sock_t socket, void *buf, size_t bufSize, int flags,
const struct sockaddr *to, socklen_t tolen);
NBIO_EXPORT(int) nbio_wait(nbio_sock_t socket, nbio_request);
NBIO_EXPORT(SOCKET) nbio_fd(nbio_sock_t socket);
extern int nbio_select(int n,
fd_set *readfds,
fd_set *writefds,
fd_set *exceptfds,
struct timeval *timeout);
extern int nbio_unify_ip4(term_t ip4, unsigned long hip);
extern int nbio_get_ip(term_t ip4, struct in_addr *ip);
extern int nbio_error(int code, nbio_error_map map);
extern const char*
nbio_last_error(nbio_sock_t socket);
NBIO_EXPORT(int) nbio_setopt(int socket, nbio_option opt, ...);
extern int nbio_get_flags(int socket);
/* support tipc_setopt() */
extern plsocket_ptr
nbio_to_plsocket(nbio_sock_t socket);
extern SOCKET plsocket_handle(plsocket_ptr s);
/*******************************
* CONVERSION *
*******************************/
extern int nbio_get_sockaddr(term_t Address,
struct sockaddr_in *addr);
extern int nbio_get_ip4(term_t ip4, struct in_addr *ip);
#endif /*H_NONBLOCKIO_INCLUDED*/
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