inet_pton.c revision 233294 
1/*
2 * Copyright (c) 1999 - 2000 Kungliga Tekniska H��gskolan
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
40ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
41inet_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
106ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
107inet_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
117