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, dst));
80 #define AF_INET6 AF_MAX+1 /* just to let this compile */
83 return (inet_pton6(src, 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;
112 while ((ch = *src++) != '\0') {
115 if ((pch = strchr(digits, ch)) != NULL) {
116 u_int new = *tp * 10 + (pch - digits);
126 } else if (ch == '.' && saw_digit) {
136 /* bcopy(tmp, dst, INADDRSZ); */
137 memcpy(dst, tmp, INADDRSZ);
143 * inet_pton6(src, dst)
144 * convert presentation level address to network order binary form.
146 * 1 if `src' is a valid [RFC1884 2.2] address, else 0.
148 * (1) does not touch `dst' unless it's returning 1.
149 * (2) :: in a full address is silently ignored.
151 * inspired by Mark Andrews.
156 inet_pton6(const char *src, unsigned char *dst)
158 static const char xdigits_l[] = "0123456789abcdef",
159 xdigits_u[] = "0123456789ABCDEF";
160 unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp;
161 const char *xdigits, *curtok;
165 memset((tp = tmp), 0, IN6ADDRSZ);
166 endp = tp + IN6ADDRSZ;
168 /* Leading :: requires some special handling. */
175 while ((ch = *src++) != '\0') {
178 if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
179 pch = strchr((xdigits = xdigits_u), ch);
182 val |= (pch - xdigits);
196 if (tp + INT16SZ > endp)
198 *tp++ = (unsigned char) (val >> 8) & 0xff;
199 *tp++ = (unsigned char) val & 0xff;
204 if (ch == '.' && ((tp + INADDRSZ) <= endp) &&
205 inet_pton4(curtok, tp) > 0) {
208 break; /* '\0' was seen by inet_pton4(). */
213 if (tp + INT16SZ > endp)
215 *tp++ = (unsigned char) (val >> 8) & 0xff;
216 *tp++ = (unsigned char) val & 0xff;
218 if (colonp != NULL) {
220 * Since some memmove()'s erroneously fail to handle
221 * overlapping regions, we'll do the shift by hand.
223 const int n = tp - colonp;
226 for (i = 1; i <= n; i++) {
227 endp[- i] = colonp[n - i];
234 /* bcopy(tmp, dst, IN6ADDRSZ); */
235 memcpy(dst, tmp, IN6ADDRSZ);
238 #endif /* ENABLE_IPV6 */
240 #endif /* HAVE_INET_PTON */