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path: root/support/dktools/dk4sock21.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: dk4sock21.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 dk4sock21.c The dk4sock21 module.
*/


#line 10 "dk4sock21.ctr"

#include "dk4sock.h"

#if DK4_HAVE_LIMITS_H
#ifndef LIMITS_H_INCLUDED
#include <limits.h>
#define	LIMITS_H_INCLUDED 1
#endif
#endif

#if DK4_HAVE_STDINT_H
#ifndef STDINT_H_INCLUDED
#if defined(__cplusplus) && (!defined(__STDC_LIMIT_MACROS))
#define __STDC_LIMIT_MACROS 1
#endif
#if defined(__cplusplus) && (!defined(__STDC_CONSTANT_MACROS))
#define __STDC_CONSTANT_MACROS 1
#endif
#include <stdint.h>
#define	STDINT_H_INCLUDED 1
#endif
#endif

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

#include "dk4numco.h"





#line 45 "dk4sock21.ctr"




int
dk4socket_sendto(
  dk4_socket_t		 sock,
  const void		*buf,
  size_t		*pszbuf,
  int			 flags,
  const struct sockaddr	*saddr,
  size_t		 addrlen,
  long			 secs,
  long			 usecs,
  dk4_er_t		*erp
)
{
  fd_set	 	wfds;
  struct timeval	to;
#if DK4_HAVE_SSIZE_T
  ssize_t		bwr;
#else
  int			bwr;
#endif
  int			res;
  int		 	back = DK4_SOCKET_RESULT_FAILED;

  if (
    (INVALID_SOCKET != sock) && (NULL != buf) && (NULL != pszbuf)
    && (NULL != saddr) && (0 < addrlen)
  )
  {
    if ((0 < *pszbuf) && (0 != dk4socket_correct_addr_lgt(saddr, &addrlen))) {
#if DK4_HAVE_SSIZE_T
      if ((dk4_um_t)(*pszbuf) <= (dk4_um_t)(SIZE_MAX / 2))
#else
      if ((dk4_um_t)(*pszbuf) <= (dk4_um_t)(INT_MAX))
#endif
      {
        if ((0L != secs) || (0L != usecs)) {
	  /*
		  Timeout, check writability.
	  */
	  FD_ZERO(&wfds);
	  FD_SET(sock, &wfds);
	  to.tv_sec = secs;
	  to.tv_usec = usecs;
	  dk4socket_error_reset();
	  res = select(((int)sock + 1), NULL, &wfds, NULL, &to);
	  if (0 < res) {
	    if (FD_ISSET(sock, &wfds)) {
	      back = DK4_SOCKET_RESULT_SUCCESS;
	    } else {
	      /* Timeout */
	      dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	    }
	  } else {
#if DK4_ON_WINDOWS
	    if (SOCKET_ERROR == res)
#else
	    if (-1 == res)
#endif
	    {
	      /* select error */
	      dk4socket_error_report(erp, DK4_E_SOCKET_SELECT);
	    }
	    else
	    {
	      /* Timeout */
	      dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	    }
	  }
        } else {
          /*
		  No timeout, can continue sending immediately.
	  */
          back = DK4_SOCKET_RESULT_SUCCESS;
        }
        if (DK4_SOCKET_RESULT_SUCCESS == back) {
	  (void)dk4socket_correct_addr_lgt(saddr, &addrlen);
          back = DK4_SOCKET_RESULT_FAILED;
	  /*
		  Really send.
	  */
	  dk4socket_error_reset();
#if DK4_ON_WINDOWS
#if DK4_HAVE_SOCKLEN_T
	  bwr = sendto(
	    sock, buf, (int)(*pszbuf), flags, saddr, (socklen_t)addrlen
	  );
#else
	  bwr = sendto(
	    sock, buf, (int)(*pszbuf), flags, saddr, (int)addrlen
	  );
#endif
#else
#if DK4_HAVE_SOCKLEN_T
	  bwr = sendto(
	    sock, buf, *pszbuf, flags, saddr, (socklen_t)addrlen
	  );
#else
	  bwr = sendto(
	    sock, buf, *pszbuf, flags, saddr, (int)addrlen
	  );
#endif
#endif
	  if (0 <= bwr) {
	    if ((size_t)bwr == *pszbuf) {
	      back = DK4_SOCKET_RESULT_SUCCESS;
	    } else {
	      back = DK4_SOCKET_RESULT_IN_PROGRESS;
	    }
	    *pszbuf = (size_t)bwr;
	  } else {
	    dk4socket_error_report(erp, DK4_E_SOCKET_SEND);
	    *pszbuf = 0;
	  }
        }
      } else {
        dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
      }
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}



int
dk4socket_recvfrom(
  dk4_socket_t		 sock,
  void			*buf,
  size_t		*pszbuf,
  int			 flags,
  struct sockaddr	*saddr,
  size_t		*paddrlen,
  long			 secs,
  long			 usecs,
  dk4_er_t		*erp
)
{
  fd_set		 rfds;
  struct timeval	 to;
#if DK4_HAVE_SSIZE_T
  ssize_t		 bwr;
#else
  int			 bwr;
#endif
#if DK4_HAVE_SOCKLEN_T
  socklen_t		 peersize;
#else
  int			 peersize;
#endif
  int			 res;
  int			 back = DK4_SOCKET_RESULT_FAILED;

  if (
    (INVALID_SOCKET != sock) && (NULL != buf) && (NULL != pszbuf)
    && (NULL != saddr) && (NULL != paddrlen)
  )
  {
    if ((0 < *pszbuf) && (0 < *paddrlen)) {
#if DK4_HAVE_SSIZE_T
      if ((dk4_um_t)(*pszbuf) <= (dk4_um_t)(SIZE_MAX / 2))
#else
      if ((dk4_um_t)(*pszbuf) <= (dk4_um_t)(INT_MAX))
#endif
      {
        if ((0L != secs) || (0L != usecs)) {
	  /*
		Timeout, check readability.
	  */
	  FD_ZERO(&rfds);
	  FD_SET(sock, &rfds);
	  to.tv_sec = secs;
	  to.tv_usec = usecs;
	  dk4socket_error_reset();
	  res = select(((int)sock + 1), &rfds, NULL, NULL, &to);
	  if (0 < res) {
	    if (FD_ISSET(sock, &rfds)) {
	      back = DK4_SOCKET_RESULT_SUCCESS;
	    } else {
	      dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	    }
	  } else {
#if DK4_ON_WINDOWS
	    if (SOCKET_ERROR == res)
#else
	    if (-1 == res)
#endif
	    {
	      dk4socket_error_report(erp, DK4_E_SOCKET_SELECT);
	    }
	    else
	    {
	      dk4error_set_simple_error_code(erp, DK4_E_SOCKET_TIMEOUT);
	    }
	  }
	} else {
	  /*
		No timeout.
	  */
	  back = DK4_SOCKET_RESULT_SUCCESS;
	}
	if (DK4_SOCKET_RESULT_SUCCESS == back) {
	  back = DK4_SOCKET_RESULT_FAILED;
#if DK4_HAVE_SOCKLEN_T
	  peersize = (socklen_t)(*paddrlen);
#else
	  peersize = (int)(*paddrlen);
#endif
	  dk4socket_error_reset();
#if DK4_ON_WINDOWS
	  bwr = recvfrom(
	    sock, buf, (int)(*pszbuf), flags, saddr, &peersize
	  );
#else
	  bwr = recvfrom(
	    sock, buf, *pszbuf, flags, saddr, &peersize
	  );
#endif
	  if (0 <= bwr) {
	    back = DK4_SOCKET_RESULT_SUCCESS;
	    *pszbuf = (size_t)bwr;
	  } else {
	    dk4socket_error_report(erp, DK4_E_SOCKET_RECV);
	    *pszbuf = 0;
	  }
	  *paddrlen = (size_t)peersize;
	}
      }
      else
      {
        dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
      }
    } else {
      dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}