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path: root/support/dktools/dk4sock29.c
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/*
Copyright (C) 2016-2020, 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: dk4sock29.ctr
*/

/**	@file dk4sock29.c The dk4sock29 module.
*/


#line 8 "dk4sock29.ctr"

#include "dk4conf.h"
#include "dk4sock.h"
#include "dk4mem.h"

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




#line 22 "dk4sock29.ctr"



dk4_socket_set_t *
dk4socket_set_udp_directly(
  unsigned short	 portno,
  int			 local,
  int			 broadcast,
  dk4_er_t		*erp
)
{
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
  struct sockaddr_in6	 soin6;
#endif
  struct sockaddr_in	 soin4;
  dk4_socket_set_t	*back = NULL;
  size_t		 max;
  int			 res;
#if DK4_HAVE_SETSOCKOPT && (defined(SO_REUSEPORT) || defined(SO_REUSEADDR))
  int			 opt;
#endif
#if	DK4_USE_ASSERT
  assert(0 < portno);
#endif
  if (0 < portno) {
    max = 1;
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
    max++;
#endif
    back = dk4socket_set_new(max, erp);
    if (NULL != back) {
      /*	IPv4 address
      */
      DK4_MEMRES(&soin4, sizeof(soin4));
      soin4.sin_family = AF_INET;
      soin4.sin_port   = dk4socket_htons(portno);
      if (0 != local) {
        soin4.sin_addr.s_addr   = dk4socket_htonl(INADDR_LOOPBACK);
      } else {
        soin4.sin_addr.s_addr   = dk4socket_htonl(INADDR_ANY);
      }
      (back->pSockets)[back->szUsed] = dk4socket_open(
        AF_INET, SOCK_DGRAM, 0, erp
      );
      if (INVALID_SOCKET != (back->pSockets)[back->szUsed]) {
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEPORT)
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  (back->pSockets)[back->szUsed], SOL_SOCKET,
	  SO_REUSEPORT, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 74 "dk4sock29.ctr"
	}
#else
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEADDR)
	

#line 78 "dk4sock29.ctr"
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  (back->pSockets)[back->szUsed], SOL_SOCKET,
	  SO_REUSEADDR, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 84 "dk4sock29.ctr"
	}
#else
	

#line 87 "dk4sock29.ctr"
#endif
#endif
#if DK4_HAVE_SETSOCKOPT && defined(SO_BROADCAST)
	

#line 91 "dk4sock29.ctr"
	if (0 != broadcast) {
	  dk4socket_set_one_bytes(&opt, sizeof(opt));
	  res = setsockopt(
	    (back->pSockets)[back->szUsed], SOL_SOCKET,
	    SO_BROADCAST, (void *)(&opt), sizeof(opt)
	  );
	  if (0 != res) {		

#line 98 "dk4sock29.ctr"
	  }
	}
#else
	

#line 102 "dk4sock29.ctr"
#endif
        res = dk4socket_bind(
	  (back->pSockets)[back->szUsed],
	  (struct sockaddr *)(&soin4),
	  sizeof(soin4),
	  erp
	);
	if (DK4_SOCKET_RESULT_SUCCESS == res) {
	  back->szUsed += 1;
	} else {
	  (void)dk4socket_close((back->pSockets)[back->szUsed], NULL);
	  (back->pSockets)[back->szUsed] = INVALID_SOCKET;
	}
      }
      /*	IPv6 address if available
      */
#if DK4_HAVE_STRUCT_SOCKADDR_IN6
      DK4_MEMRES(&soin6, sizeof(soin6));
      soin6.sin6_family = AF_INET6;
      if (0 != local) { soin6.sin6_addr.s6_addr[15] = 0x01; }
      soin6.sin6_port   = dk4socket_htons(portno);
      (back->pSockets)[back->szUsed] = dk4socket_open(
        AF_INET6, SOCK_DGRAM, 0, erp
      );
      if (INVALID_SOCKET != (back->pSockets)[back->szUsed]) {
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEPORT)
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  (back->pSockets)[back->szUsed], SOL_SOCKET,
	  SO_REUSEPORT, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 134 "dk4sock29.ctr"
	}
#else
#if DK4_HAVE_SETSOCKOPT && defined(SO_REUSEADDR)
	

#line 138 "dk4sock29.ctr"
	dk4socket_set_one_bytes(&opt, sizeof(opt));
	res = setsockopt(
	  (back->pSockets)[back->szUsed], SOL_SOCKET,
	  SO_REUSEADDR, (void *)(&opt), sizeof(opt)
	);
	if (0 != res) {		

#line 144 "dk4sock29.ctr"
	}
#else
	

#line 147 "dk4sock29.ctr"
#endif
#endif
#if DK4_HAVE_SETSOCKOPT && defined(SO_BROADCAST)
	

#line 151 "dk4sock29.ctr"
	if (0 != broadcast) {
	  dk4socket_set_one_bytes(&opt, sizeof(opt));
	  res = setsockopt(
	    (back->pSockets)[back->szUsed], SOL_SOCKET,
	    SO_BROADCAST, (void *)(&opt), sizeof(opt)
	  );
	  if (0 != res) {		

#line 158 "dk4sock29.ctr"
	  }
	}
#else
	

#line 162 "dk4sock29.ctr"
#endif

        res = dk4socket_bind(
	  (back->pSockets)[back->szUsed],
	  (struct sockaddr *)(&soin6),
	  sizeof(soin6),
	  erp
	);
	if (DK4_SOCKET_RESULT_SUCCESS == res) {
	  back->szUsed += 1;
	} else {
	  (void)dk4socket_close((back->pSockets)[back->szUsed], NULL);
	  (back->pSockets)[back->szUsed] = INVALID_SOCKET;
	}
      }
#endif
      if (0 == back->szUsed) {
        dk4socket_set_delete(back, NULL);
	back = NULL;
      }
    }
  } else {
    dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS);
  }
  return back;
}