/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
   
   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.
   
   This library 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
   Library General Public License for more details.
   
   You should have received a copy of the GNU Library 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 */

/*
 * Vio Lite.
 * Purpose: include file for Vio that will work with C and C++
 */

#ifndef vio_violite_h_
#define	vio_violite_h_

#include "my_net.h"			/* needed because of struct in_addr */


/* Simple vio interface in C;  The functions are implemented in violite.c */

#ifdef	__cplusplus
extern "C" {
#endif /* __cplusplus */

enum enum_vio_type { VIO_CLOSED, VIO_TYPE_TCPIP, VIO_TYPE_SOCKET,
		     VIO_TYPE_NAMEDPIPE, VIO_TYPE_SSL};

#ifndef __WIN__
#define HANDLE void *
#endif

Vio*	vio_new(my_socket sd, enum enum_vio_type type, my_bool localhost);
#ifdef __WIN__
Vio*	vio_new_win32pipe(HANDLE hPipe);
#endif
void	vio_delete(Vio* vio);

#ifdef EMBEDDED_LIBRARY
void vio_reset(Vio *vio);
#else
void vio_reset(Vio* vio, enum enum_vio_type type,
	       my_socket sd, HANDLE hPipe, my_bool localhost);
#endif

/*
 * vio_read and vio_write should have the same semantics
 * as read(2) and write(2).
 */
int	vio_read(Vio *vio, gptr	buf, int size);
int	vio_write(Vio *vio, const gptr buf, int size);
/*
 * Whenever the socket is set to blocking mode or not.
 */
int	vio_blocking(Vio *vio, my_bool onoff);
my_bool	vio_is_blocking(Vio *vio);
/*
 * setsockopt TCP_NODELAY at IPPROTO_TCP level, when possible.
 */
int	vio_fastsend(Vio *vio);
/*
 * setsockopt SO_KEEPALIVE at SOL_SOCKET level, when possible.
 */
int	vio_keepalive(Vio *vio, my_bool	onoff);
/*
 * Whenever we should retry the last read/write operation.
 */
my_bool	vio_should_retry(Vio *vio);
/*
 * When the workday is over...
 */
int	vio_close(Vio* vio);
/*
 * Short text description of the socket for those, who are curious..
 */
const char* vio_description(Vio *vio);

/* Return the type of the connection */
enum enum_vio_type vio_type(Vio* vio);

/* Return last error number */
int vio_errno(Vio*vio);

/* Get socket number */
my_socket vio_fd(Vio*vio);

/*
 * Remote peer's address and name in text form.
 */
my_bool vio_peer_addr(Vio* vio, char *buf);

/* Remotes in_addr */

void vio_in_addr(Vio *vio, struct in_addr *in);

  /* Return 1 if there is data to be read */
my_bool vio_poll_read(Vio *vio,uint timeout);

#ifdef	__cplusplus
}
#endif

#if defined(HAVE_VIO) && !defined(DONT_MAP_VIO)
#define vio_delete(vio) 			(vio)->viodelete(vio)
#define vio_errno(vio)	 			(vio)->vioerrno(vio)
#define vio_read(vio, buf, size) 		(vio)->read(vio,buf,size)
#define vio_write(vio, buf, size) 		(vio)->write(vio, buf, size)
#define vio_blocking(vio, set_blocking_mode) 	(vio)->vioblocking(vio, set_blocking_mode)
#define vio_is_blocking(vio) 			(vio)->is_blocking(vio)
#define vio_fastsend(vio)			(vio)->fastsend(vio)
#define vio_keepalive(vio, set_keep_alive)	(vio)->viokeepalive(vio, set_keep_alive)
#define vio_should_retry(vio) 			(vio)->should_retry(vio)
#define vio_close(vio)				((vio)->vioclose)(vio)
#define vio_peer_addr(vio, buf)			(vio)->peer_addr(vio, buf)
#define vio_in_addr(vio, in)			(vio)->in_addr(vio, in)
#define vio_poll_read(vio,timeout)		(vio)->poll_read(vio,timeout)
#endif /* defined(HAVE_VIO) && !defined(DONT_MAP_VIO) */

#ifdef HAVE_OPENSSL
#define HEADER_DES_LOCL_H dummy_something
#include <openssl/ssl.h>
#include <openssl/err.h>
#include "my_net.h"			/* needed because of struct in_addr */

#ifdef	__cplusplus
extern "C" {
#endif /* __cplusplus */

void	vio_ssl_delete(Vio* vio);

int	vio_ssl_read(Vio* vio,gptr buf,	int size);
int	vio_ssl_write(Vio* vio,const gptr buf,int size);
int	vio_ssl_blocking(Vio* vio,my_bool onoff);
my_bool	vio_ssl_is_blocking(Vio* vio);

/* setsockopt TCP_NODELAY at IPPROTO_TCP level, when possible. */
  int vio_ssl_fastsend(Vio* vio);
/* setsockopt SO_KEEPALIVE at SOL_SOCKET level, when possible. */
int vio_ssl_keepalive(Vio* vio, my_bool onoff);
/* Whenever we should retry the last read/write operation. */
my_bool vio_ssl_should_retry(Vio* vio);
/* When the workday is over... */
int vio_ssl_close(Vio* vio);
/* Return last error number */
int vio_ssl_errno(Vio *vio);
my_bool vio_ssl_peer_addr(Vio* vio, char *buf);
void vio_ssl_in_addr(Vio *vio, struct in_addr *in);

/* Return 1 if there is data to be read */
my_bool vio_ssl_poll_read(Vio *vio,uint timeout);

/* Single copy for server */
struct st_VioSSLAcceptorFd 
{
  SSL_CTX* ssl_context_;
  SSL_METHOD* ssl_method_;
  struct st_VioSSLAcceptorFd* session_id_context_;
  enum {
    state_connect       = 1,
    state_accept        = 2
  };

  /* function pointers which are only once for SSL server 
  Vio*(*sslaccept)(struct st_VioSSLAcceptorFd*,Vio*); */
};

/* One copy for client */
struct st_VioSSLConnectorFd
{
  SSL_CTX* ssl_context_;
  SSL_METHOD* ssl_method_;
  /* function pointers which are only once for SSL client */ 
};
void sslaccept(struct st_VioSSLAcceptorFd*, Vio*, long timeout);
void sslconnect(struct st_VioSSLConnectorFd*, Vio*, long timeout);

struct st_VioSSLConnectorFd
*new_VioSSLConnectorFd(const char* key_file, const char* cert_file,
		       const char* ca_file,  const char* ca_path,
		       const char* cipher);
struct st_VioSSLAcceptorFd
*new_VioSSLAcceptorFd(const char* key_file, const char* cert_file,
		      const char* ca_file,const char* ca_path,
		      const char* cipher);
Vio* new_VioSSL(struct st_VioSSLAcceptorFd* fd, Vio* sd,int state);

#ifdef	__cplusplus
}
#endif
#endif /* HAVE_OPENSSL */

/* This enumerator is used in parser - should be always visible */
enum SSL_type {SSL_TYPE_NONE, SSL_TYPE_ANY, SSL_TYPE_X509, SSL_TYPE_SPECIFIED};

#ifndef EMBEDDED_LIBRARY
/* This structure is for every connection on both sides */
struct st_vio
{
  my_socket		sd;		/* my_socket - real or imaginary */
  HANDLE hPipe;
  my_bool		localhost;	/* Are we from localhost? */
  int			fcntl_mode;	/* Buffered fcntl(sd,F_GETFL) */
  struct sockaddr_in	local;		/* Local internet address */
  struct sockaddr_in	remote;		/* Remote internet address */
  enum enum_vio_type	type;		/* Type of connection */
  char			desc[30];	/* String description */
#ifdef HAVE_VIO
  /* function pointers. They are similar for socket/SSL/whatever */
  void    (*viodelete)(Vio*);
  int     (*vioerrno)(Vio*);
  int     (*read)(Vio*, gptr, int);
  int     (*write)(Vio*, gptr, int);
  int     (*vioblocking)(Vio*, my_bool);
  my_bool (*is_blocking)(Vio*);
  int     (*viokeepalive)(Vio*, my_bool);
  int     (*fastsend)(Vio*);
  my_bool (*peer_addr)(Vio*, gptr);
  void    (*in_addr)(Vio*, struct in_addr*);
  my_bool (*should_retry)(Vio*);
  int     (*vioclose)(Vio*);
  my_bool (*poll_read)(Vio*,uint);

#ifdef HAVE_OPENSSL
  SSL* ssl_;
  my_bool open_;
#endif /* HAVE_OPENSSL */
#endif /* HAVE_VIO */
};
#endif /* EMBEDDED_LIBRARY */
#endif /* vio_violite_h_ */
