lib/roken/inet_pton.c

   1 /*
   2  * Copyright (c) 1999 - 2000 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include <config.h>
  35
  36 #include "roken.h"
  37
  38 #ifdef HAVE_WINSOCK
  39
  40 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
  41 inet_pton(int af, const char *csrc, void *dst)
  42 {
  43     char * src;
  44
  45     if (csrc == NULL || (src = strdup(csrc)) == NULL) {
  46         _set_errno( ENOMEM );
  47         return 0;
  48     }
  49
  50     switch (af) {
  51     case AF_INET:
  52         {
  53             struct sockaddr_in  si4;
  54             INT r;
  55             INT s = sizeof(si4);
  56
  57             si4.sin_family = AF_INET;
  58             r = WSAStringToAddress(src, AF_INET, NULL, (LPSOCKADDR) &si4, &s);
  59             free(src);
  60             src = NULL;
  61
  62             if (r == 0) {
  63                 memcpy(dst, &si4.sin_addr, sizeof(si4.sin_addr));
  64                 return 1;
  65             }
  66         }
  67         break;
  68
  69     case AF_INET6:
  70         {
  71             struct sockaddr_in6 si6;
  72             INT r;
  73             INT s = sizeof(si6);
  74
  75             si6.sin6_family = AF_INET6;
  76             r = WSAStringToAddress(src, AF_INET6, NULL, (LPSOCKADDR) &si6, &s);
  77             free(src);
  78             src = NULL;
  79
  80             if (r == 0) {
  81                 memcpy(dst, &si6.sin6_addr, sizeof(si6.sin6_addr));
  82                 return 1;
  83             }
  84         }
  85         break;
  86
  87     default:
  88         _set_errno( EAFNOSUPPORT );
  89         return -1;
  90     }
  91
  92     /* the call failed */
  93     {
  94         int le = WSAGetLastError();
  95
  96         if (le == WSAEINVAL)
  97             return 0;
  98
  99         _set_errno(le);
 100         return -1;
 101     }
 102 }
 103
 104 #else  /* !HAVE_WINSOCK */
 105
 106 ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
 107 inet_pton(int af, const char *src, void *dst)
 108 {
 109     if (af != AF_INET) {
 110         errno = EAFNOSUPPORT;
 111         return -1;
 112     }
 113     return inet_aton (src, dst);
 114 }
 115
 116 #endif