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path: root/support/dktools/dk4sock16.c
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/*
	WARNING: This file was generated by dkct.
	Changes you make here will be lost if dkct is run again!
	You should modify the original source and run dkct on it.
	Original source: dk4sock16.ctr
*/

/*
Copyright (C) 2015-2017, Dirk Krause

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above opyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.
* Neither the name of the author nor the names of contributors may be used
  to endorse or promote products derived from this software without specific
  prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.
IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**	@file dk4sock16.c The dk4sock16 module.
*/


#line 9 "dk4sock16.ctr"

#include "dk4sock.h"

#include <stdio.h>

#if !DK4_ON_WINDOWS
#if DK4_HAVE_FCNTL_H
#ifndef FCNTL_H_INCLUDED
#include <fcntl.h>
#define	FCNTL_H_INCLUDED 1
#endif
#endif
#endif

#if DK4_HAVE_ERRNO_H
#ifndef ERRNO_H_INCLUDED
#include <errno.h>
#define	ERRNO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_UNISTD_H
#ifndef	UNISTD_H_INCLUDED
#include <unistd.h>
#define	UNISTD_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_IO_H
#ifndef	IO_H_INCLUDED
#include <io.h>
#define	IO_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_STRING_H
#ifndef	STRING_H_INCLUDED
#include <string.h>
#define	STRING_H_INCLUDED 1
#endif
#endif



#line 52 "dk4sock16.ctr"



static
dk4_socket_t
dk4socket_tcp_client_cleanup_socket(
  dk4_socket_t		 sock,
  int			 level,
  struct sockaddr	*pAddr,
  size_t		 szAddr
)
{
#if 0
  /*	Setting SO_REUSEADDR or SO_REUSEPORT must follow socket()
  	immediately.
  */
  if ((0 < level) || ((NULL != pAddr) && (0 < szAddr))) {
    (void)dk4socket_option_set_reuse(sock, 1, NULL);
  }
#endif

#if DK4_ON_WINDOWS
  closesocket(sock);
#else
  close(sock);
#endif
  return (INVALID_SOCKET);
}



static
dk4_socket_t
dk4socket_tcp_client_connect_attempt(
  dk4_socket_t		 back,
  struct sockaddr	*pAddr,
  size_t		 szAddr,
  struct sockaddr	*pLoAddr,
  size_t		 szLoAddr,
  long			 secs,
  long			 usecs,
  dk4_er_t		*erp
)
{
  fd_set		 wfds;
  struct timeval	 to;
#if (!DK4_ON_WINDOWS) && (DK4_HAVE_SETSOCKOPT) \
	&& defined(SOL_SOCKET) && defined(SO_ERROR)
#if DK4_HAVE_SOCKLEN_T
  socklen_t		 slo;
#else
  int			 slo;
#endif
  int			 err;
#endif
  int			 res;
  

#line 109 "dk4sock16.ctr"
  

#line 110 "dk4sock16.ctr"
  res = dk4socket_connect(back, pAddr, szAddr, erp);
  switch (res) {
    case DK4_SOCKET_RESULT_SUCCESS : {		

#line 113 "dk4sock16.ctr"
      /* do nothing */
    } break;
    case DK4_SOCKET_RESULT_IN_PROGRESS : {	

#line 116 "dk4sock16.ctr"
      FD_ZERO(&wfds);
      FD_SET(back, &wfds);
      to.tv_sec = secs;
      to.tv_usec = usecs;
      dk4socket_error_reset();
      res = select((((int)back) + 1), NULL, &wfds, NULL, &to);
      if (0 < res) {				

#line 123 "dk4sock16.ctr"
        if (FD_ISSET(back, &wfds)) {		

#line 124 "dk4sock16.ctr"
#if (!DK4_ON_WINDOWS) && (DK4_HAVE_SETSOCKOPT) \
	&& defined(SOL_SOCKET) && defined(SO_ERROR)
	  err = 0;
	  slo = sizeof(err);
	  dk4socket_error_reset();
	  res = getsockopt(back, SOL_SOCKET, SO_ERROR, &err, &slo);
	  if (0 == res) {			

#line 131 "dk4sock16.ctr"
	    if (0 != dk4socket_non_null_getsockopt(err, slo)) {
	      

#line 133 "dk4sock16.ctr"
	      dk4error_set_idetails(erp, DK4_E_SOCKET_CONNECT, err);
	      back = dk4socket_tcp_client_cleanup_socket(
	        back, 1, pLoAddr, szLoAddr
	      );
	    }
#if VERSION_BEFORE_20160415
	    if (sizeof(int) != slo) {
	      if (0 != err) {			

#line 141 "dk4sock16.ctr"
	        dk4error_set_idetails(erp, DK4_E_SOCKET_CONNECT, err);
		back = dk4socket_tcp_client_cleanup_socket(
		  back, 1, pLoAddr, szLoAddr
		);
	      }
	    } else {				

#line 147 "dk4sock16.ctr"
	      dk4socket_error_report(erp, DK4_E_SOCKET_GETSOCKOPT);
	      back = dk4socket_tcp_client_cleanup_socket(
	        back, 1, pLoAddr, szLoAddr
	      );
	    }
#endif
	  } else {				

#line 154 "dk4sock16.ctr"
	    dk4socket_error_report(erp, DK4_E_SOCKET_GETSOCKOPT);
	    back = dk4socket_tcp_client_cleanup_socket(back,1,pLoAddr,szLoAddr);
	  }
#endif
	} else {				

#line 159 "dk4sock16.ctr"
	  dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	  back = dk4socket_tcp_client_cleanup_socket(back,0,pLoAddr,szLoAddr);
	}
      } else {
        if (0 > res) {				

#line 164 "dk4sock16.ctr"
          dk4socket_error_report(erp, DK4_E_SOCKET_SELECT);
	} else {				

#line 166 "dk4sock16.ctr"
	  dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	}
	back = dk4socket_tcp_client_cleanup_socket(back,0,pLoAddr,szLoAddr);
      }
    } break;
    default : {						

#line 172 "dk4sock16.ctr"
      back = dk4socket_tcp_client_cleanup_socket(back, 0, pLoAddr, szLoAddr);
    } break;
  }
  

#line 176 "dk4sock16.ctr"
  return back;
}



dk4_socket_t
dk4socket_tcp_client_for_addr(
  int			 protfam,
  struct sockaddr	*pRemoteAddr,
  size_t		 szRemoteAddr,
  struct sockaddr	*pLocalAddr,
  size_t		 szLocalAddr,
  long			 seconds,
  long			 microSeconds,
  dk4_er_t		*erp
)
{
  dk4_socket_t		 back	= INVALID_SOCKET;
  int			 res;
#if DK4_HAVE_SETSOCKOPT && (defined(SO_REUSEPORT) || defined(SO_REUSEADDR))
  int			 opt	= 0;
#endif
  

#line 199 "dk4sock16.ctr"
  if ((NULL != pRemoteAddr) && (0 < szRemoteAddr)) {	

#line 200 "dk4sock16.ctr"
    

#line 201 "dk4sock16.ctr"
    back = dk4socket_open(protfam, SOCK_STREAM, 0, erp);
    if (INVALID_SOCKET != back) {			

#line 203 "dk4sock16.ctr"
      if ((NULL != pLocalAddr) && (0 < szLocalAddr)) {	

#line 204 "dk4sock16.ctr"
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEPORT)
	

#line 206 "dk4sock16.ctr"
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  back, SOL_SOCKET,
	  SO_REUSEPORT, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 212 "dk4sock16.ctr"
	}
#else
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEADDR)
	

#line 216 "dk4sock16.ctr"
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  back, SOL_SOCKET,
	  SO_REUSEADDR, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 222 "dk4sock16.ctr"
	}
#else
	

#line 225 "dk4sock16.ctr"
#endif
#endif
        res = dk4socket_bind(back, pLocalAddr, szLocalAddr, erp);
	if (DK4_SOCKET_RESULT_FAILED == res) {		

#line 229 "dk4sock16.ctr"
	  back = dk4socket_tcp_client_cleanup_socket(
	    back, 0, pLocalAddr, szLocalAddr
	  );
	}
      }
      if (INVALID_SOCKET != back) {
        if ((0L != seconds) || (0L != microSeconds)) {	

#line 236 "dk4sock16.ctr"
	  res = dk4socket_option_set_nonblock(back, 1, erp);
	  if (DK4_SOCKET_RESULT_SUCCESS == res) {	

#line 238 "dk4sock16.ctr"
	    back = dk4socket_tcp_client_connect_attempt(
	      back, pRemoteAddr, szRemoteAddr, pLocalAddr, szLocalAddr,
	      seconds, microSeconds, erp
	    );
	    if (INVALID_SOCKET != back) {
	      res = dk4socket_option_set_nonblock(back, 0, erp);
	      if (DK4_SOCKET_RESULT_SUCCESS != res) {	

#line 245 "dk4sock16.ctr"
	        back = dk4socket_tcp_client_cleanup_socket(
		  back, 1, pLocalAddr, szLocalAddr
		);
	      }
	    }
	  } else {					

#line 251 "dk4sock16.ctr"
	    back = dk4socket_tcp_client_cleanup_socket(
	      back, 0, pLocalAddr, szLocalAddr
	    );
	  }
	} else {					

#line 256 "dk4sock16.ctr"
	  back = dk4socket_tcp_client_connect_attempt(
	    back, pRemoteAddr, szRemoteAddr, pLocalAddr, szLocalAddr,
	    0L, 0L, erp
	  );
	}
      }
    } else {						

#line 263 "dk4sock16.ctr"
      

#line 264 "dk4sock16.ctr"
    }
  } else {						

#line 266 "dk4sock16.ctr"
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  

#line 269 "dk4sock16.ctr"
  return back;
}