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path: root/support/dktools/dk4sock16.c
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/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/

/*
	WARNING: This file was generated by the dkct program (see
	http://dktools.sourceforge.net/ for details).
	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
*/

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


#line 9 "dk4sock16.ctr"

#include "dk4conf.h"
#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

#if DK4_HAVE_ASSERT_H
#ifndef	ASSERT_H_INCLUDED
#include <assert.h>
#define	ASSERT_H_INCLUDED 1
#endif
#endif




#line 61 "dk4sock16.ctr"



static
dk4_socket_t
dk4socket_tcp_client_cleanup_socket(
  dk4_socket_t		 sock
)
{
#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,
  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 113 "dk4sock16.ctr"
  

#line 114 "dk4sock16.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != pAddr);
  assert(0 < szAddr);
#endif
  res = dk4socket_connect(back, pAddr, szAddr, erp);
  switch (res) {
    case DK4_SOCKET_RESULT_SUCCESS : {		

#line 121 "dk4sock16.ctr"
      /* do nothing */
    } break;
    case DK4_SOCKET_RESULT_IN_PROGRESS : {	

#line 124 "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 131 "dk4sock16.ctr"
        if (FD_ISSET(back, &wfds)) {		

#line 132 "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 139 "dk4sock16.ctr"
	    if (0 != dk4socket_non_null_getsockopt(err, slo)) {
	      

#line 141 "dk4sock16.ctr"
	      dk4error_set_idetails(erp, DK4_E_SOCKET_CONNECT, err);
	      back = dk4socket_tcp_client_cleanup_socket(back);
	    }
#if VERSION_BEFORE_20160415
	    if (sizeof(int) != slo) {
	      if (0 != err) {			

#line 147 "dk4sock16.ctr"
	        dk4error_set_idetails(erp, DK4_E_SOCKET_CONNECT, err);
		back = dk4socket_tcp_client_cleanup_socket(back);
	      }
	    } else {				

#line 151 "dk4sock16.ctr"
	      dk4socket_error_report(erp, DK4_E_SOCKET_GETSOCKOPT);
	      back = dk4socket_tcp_client_cleanup_socket(back);
	    }
#endif
	  } else {				

#line 156 "dk4sock16.ctr"
	    dk4socket_error_report(erp, DK4_E_SOCKET_GETSOCKOPT);
	    back = dk4socket_tcp_client_cleanup_socket(back);
	  }
#endif
	} else {				

#line 161 "dk4sock16.ctr"
	  dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	  back = dk4socket_tcp_client_cleanup_socket(back);
	}
      } else {
        if (0 > res) {				

#line 166 "dk4sock16.ctr"
          dk4socket_error_report(erp, DK4_E_SOCKET_SELECT);
	} else {				

#line 168 "dk4sock16.ctr"
	  dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	}
	back = dk4socket_tcp_client_cleanup_socket(back);
      }
    } break;
    default : {						

#line 174 "dk4sock16.ctr"
      back = dk4socket_tcp_client_cleanup_socket(back);
    } break;
  }
  

#line 178 "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 201 "dk4sock16.ctr"
#if	DK4_USE_ASSERT
  assert(NULL != pRemoteAddr);
  assert(0 < szRemoteAddr);
#endif
  if ((NULL != pRemoteAddr) && (0 < szRemoteAddr)) {	

#line 206 "dk4sock16.ctr"
    

#line 207 "dk4sock16.ctr"
    back = dk4socket_open(protfam, SOCK_STREAM, 0, erp);
    if (INVALID_SOCKET != back) {			

#line 209 "dk4sock16.ctr"
      if ((NULL != pLocalAddr) && (0 < szLocalAddr)) {	

#line 210 "dk4sock16.ctr"
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEPORT)
	

#line 212 "dk4sock16.ctr"
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  back, SOL_SOCKET,
	  SO_REUSEPORT, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 218 "dk4sock16.ctr"
	}
#else
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEADDR)
	

#line 222 "dk4sock16.ctr"
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  back, SOL_SOCKET,
	  SO_REUSEADDR, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 228 "dk4sock16.ctr"
	}
#else
	

#line 231 "dk4sock16.ctr"
#endif
#endif
        res = dk4socket_bind(back, pLocalAddr, szLocalAddr, erp);
	if (DK4_SOCKET_RESULT_FAILED == res) {		

#line 235 "dk4sock16.ctr"
	  back = dk4socket_tcp_client_cleanup_socket(back);
	}
      }
      if (INVALID_SOCKET != back) {
        if ((0L != seconds) || (0L != microSeconds)) {	

#line 240 "dk4sock16.ctr"
	  res = dk4socket_option_set_nonblock(back, 1, erp);
	  if (DK4_SOCKET_RESULT_SUCCESS == res) {	

#line 242 "dk4sock16.ctr"
	    back = dk4socket_tcp_client_connect_attempt(
	      back, pRemoteAddr, szRemoteAddr,
	      seconds, microSeconds, erp
	    );
	    if (INVALID_SOCKET != back) {
	      res = dk4socket_option_set_nonblock(back, 0, erp);
	      if (DK4_SOCKET_RESULT_SUCCESS != res) {	

#line 249 "dk4sock16.ctr"
	        back = dk4socket_tcp_client_cleanup_socket(back);
	      }
	    }
	  } else {					

#line 253 "dk4sock16.ctr"
	    back = dk4socket_tcp_client_cleanup_socket(back);
	  }
	} else {					

#line 256 "dk4sock16.ctr"
	  back = dk4socket_tcp_client_connect_attempt(
	    back, pRemoteAddr, szRemoteAddr,
	    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;
}