1 /* This is from the BIND 4.9.4 release, modified to compile by itself */
3 /* Copyright (c) 1996 by Internet Software Consortium.
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
10 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
11 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
12 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
13 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
14 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
15 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
21 #ifndef HAVE_INET_PTON
23 #ifdef HAVE_SYS_PARAM_H
24 #include <sys/param.h>
26 #ifdef HAVE_SYS_TYPES_H
27 #include <sys/types.h>
29 #ifdef HAVE_SYS_SOCKET_H
30 #include <sys/socket.h>
32 #ifdef HAVE_NETINET_IN_H
33 #include <netinet/in.h>
35 #ifdef HAVE_ARPA_INET_H
36 #include <arpa/inet.h>
41 #include "inet_pton.h"
48 #define EAFNOSUPPORT WSAEAFNOSUPPORT
52 * WARNING: Don't even consider trying to compile this on a system where
53 * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
56 static int inet_pton4(const char *src
, unsigned char *dst
);
58 static int inet_pton6(const char *src
, unsigned char *dst
);
62 * inet_pton(af, src, dst)
63 * convert from presentation format (which usually means ASCII printable)
64 * to network format (which is usually some kind of binary format).
66 * 1 if the address was valid for the specified address family
67 * 0 if the address wasn't valid (`dst' is untouched in this case)
68 * -1 if some other error occurred (`dst' is untouched in this case, too)
73 Curl_inet_pton(int af
, const char *src
, void *dst
)
77 return (inet_pton4(src
, (unsigned char *)dst
));
80 #define AF_INET6 (AF_MAX+1) /* just to let this compile */
83 return (inet_pton6(src
, (unsigned char *)dst
));
93 * inet_pton4(src, dst)
94 * like inet_aton() but without all the hexadecimal and shorthand.
96 * 1 if `src' is a valid dotted quad, else 0.
98 * does not touch `dst' unless it's returning 1.
103 inet_pton4(const char *src
, unsigned char *dst
)
105 static const char digits
[] = "0123456789";
106 int saw_digit
, octets
, ch
;
107 unsigned char tmp
[INADDRSZ
], *tp
;
113 while ((ch
= *src
++) != '\0') {
116 if ((pch
= strchr(digits
, ch
)) != NULL
) {
117 unsigned int val
= *tp
* 10 + (unsigned int)(pch
- digits
);
127 } else if (ch
== '.' && saw_digit
) {
137 /* bcopy(tmp, dst, INADDRSZ); */
138 memcpy(dst
, tmp
, INADDRSZ
);
144 * inet_pton6(src, dst)
145 * convert presentation level address to network order binary form.
147 * 1 if `src' is a valid [RFC1884 2.2] address, else 0.
149 * (1) does not touch `dst' unless it's returning 1.
150 * (2) :: in a full address is silently ignored.
152 * inspired by Mark Andrews.
157 inet_pton6(const char *src
, unsigned char *dst
)
159 static const char xdigits_l
[] = "0123456789abcdef",
160 xdigits_u
[] = "0123456789ABCDEF";
161 unsigned char tmp
[IN6ADDRSZ
], *tp
, *endp
, *colonp
;
162 const char *xdigits
, *curtok
;
166 memset((tp
= tmp
), 0, IN6ADDRSZ
);
167 endp
= tp
+ IN6ADDRSZ
;
169 /* Leading :: requires some special handling. */
176 while ((ch
= *src
++) != '\0') {
179 if ((pch
= strchr((xdigits
= xdigits_l
), ch
)) == NULL
)
180 pch
= strchr((xdigits
= xdigits_u
), ch
);
183 val
|= (pch
- xdigits
);
197 if (tp
+ INT16SZ
> endp
)
199 *tp
++ = (unsigned char) (val
>> 8) & 0xff;
200 *tp
++ = (unsigned char) val
& 0xff;
205 if (ch
== '.' && ((tp
+ INADDRSZ
) <= endp
) &&
206 inet_pton4(curtok
, tp
) > 0) {
209 break; /* '\0' was seen by inet_pton4(). */
214 if (tp
+ INT16SZ
> endp
)
216 *tp
++ = (unsigned char) (val
>> 8) & 0xff;
217 *tp
++ = (unsigned char) val
& 0xff;
219 if (colonp
!= NULL
) {
221 * Since some memmove()'s erroneously fail to handle
222 * overlapping regions, we'll do the shift by hand.
224 const int n
= tp
- colonp
;
227 for (i
= 1; i
<= n
; i
++) {
228 endp
[- i
] = colonp
[n
- i
];
235 /* bcopy(tmp, dst, IN6ADDRSZ); */
236 memcpy(dst
, tmp
, IN6ADDRSZ
);
239 #endif /* ENABLE_IPV6 */
241 #endif /* HAVE_INET_PTON */