1  /* Test of inet_pton function.
       2     Copyright (C) 2009-2023 Free Software Foundation, Inc.
       3  
       4     This program is free software: you can redistribute it and/or modify
       5     it under the terms of the GNU General Public License as published by
       6     the Free Software Foundation, either version 3 of the License, or
       7     (at your option) any later version.
       8  
       9     This program is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12     GNU General Public License for more details.
      13  
      14     You should have received a copy of the GNU General Public License
      15     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
      16  
      17  /* Written by Bruno Haible <bruno@clisp.org>, 2009.  */
      18  
      19  #include <config.h>
      20  
      21  #include <arpa/inet.h>
      22  
      23  #include "signature.h"
      24  SIGNATURE_CHECK (inet_pton, int, (int, const char *, void *));
      25  
      26  #include <netinet/in.h>
      27  #include <sys/socket.h>
      28  
      29  #include "macros.h"
      30  
      31  int
      32  main (void)
      33  {
      34  #if defined AF_INET /* HAVE_IPV4 */
      35    {
      36      /* This machine was for a long time known as
      37         ma2s2.mathematik.uni-karlsruhe.de.  */
      38      const char printable[] = "129.13.115.2";
      39      struct in_addr internal;
      40      int ret;
      41  
      42      ret = inet_pton (AF_INET, printable, &internal);
      43      ASSERT (ret == 1);
      44      /* Verify that internal is filled in network byte order.  */
      45      ASSERT (((unsigned char *) &internal)[0] == 0x81);
      46      ASSERT (((unsigned char *) &internal)[1] == 0x0D);
      47      ASSERT (((unsigned char *) &internal)[2] == 0x73);
      48      ASSERT (((unsigned char *) &internal)[3] == 0x02);
      49  # ifdef WORDS_BIGENDIAN
      50      ASSERT (internal.s_addr == 0x810D7302);
      51  # else
      52      ASSERT (internal.s_addr == 0x02730D81);
      53  # endif
      54    }
      55  #endif
      56  
      57    return 0;
      58  }