1 /* Copyright (c) 1996 by Internet Software Consortium.
3 * Permission to use, copy, modify, and distribute this software for any
4 * purpose with or without fee is hereby granted, provided that the above
5 * copyright notice and this permission notice appear in all copies.
7 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
8 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
9 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
10 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
11 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
12 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
13 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
17 #include "apr_private.h"
18 #include "apr_arch_networkio.h"
20 #if APR_HAVE_SYS_TYPES_H
21 #include <sys/types.h>
23 #if APR_HAVE_SYS_SOCKET_H
24 #include <sys/socket.h>
26 #if APR_HAVE_NETINET_IN_H
27 #include <netinet/in.h>
29 #if APR_HAVE_ARPA_INET_H
30 #include <arpa/inet.h>
42 #define INT16SZ sizeof(apr_int16_t)
53 #if !defined(EAFNOSUPPORT) && defined(WSAEAFNOSUPPORT)
54 #define EAFNOSUPPORT WSAEAFNOSUPPORT
58 * WARNING: Don't even consider trying to compile this on a system where
59 * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
62 static int inet_pton4 __P((const char *src, unsigned char *dst));
64 static int inet_pton6 __P((const char *src, unsigned char *dst));
68 * inet_pton(af, src, dst)
69 * convert from presentation format (which usually means ASCII printable)
70 * to network format (which is usually some kind of binary format).
72 * 1 if the address was valid for the specified address family
73 * 0 if the address wasn't valid (`dst' is untouched in this case)
74 * -1 if some other error occurred (`dst' is untouched in this case, too)
79 apr_inet_pton(int af, const char *src, void *dst)
83 return (inet_pton4(src, dst));
86 return (inet_pton6(src, dst));
96 * inet_pton4(src, dst)
97 * like inet_aton() but without all the hexadecimal and shorthand.
99 * 1 if `src' is a valid dotted quad, else 0.
101 * does not touch `dst' unless it's returning 1.
106 inet_pton4(const char *src, unsigned char *dst)
108 static const char digits[] = "0123456789";
109 int saw_digit, octets, ch;
110 unsigned char tmp[INADDRSZ], *tp;
115 while ((ch = *src++) != '\0') {
118 if ((pch = strchr(digits, ch)) != NULL) {
119 unsigned int new = *tp * 10 + (unsigned int)(pch - digits);
129 } else if (ch == '.' && saw_digit) {
140 memcpy(dst, tmp, INADDRSZ);
146 * inet_pton6(src, dst)
147 * convert presentation level address to network order binary form.
149 * 1 if `src' is a valid [RFC1884 2.2] address, else 0.
151 * (1) does not touch `dst' unless it's returning 1.
152 * (2) :: in a full address is silently ignored.
154 * inspired by Mark Andrews.
159 inet_pton6(const char *src, unsigned char *dst)
161 static const char xdigits_l[] = "0123456789abcdef",
162 xdigits_u[] = "0123456789ABCDEF";
163 unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp;
164 const char *xdigits, *curtok;
168 memset((tp = tmp), '\0', IN6ADDRSZ);
169 endp = tp + IN6ADDRSZ;
171 /* Leading :: requires some special handling. */
178 while ((ch = *src++) != '\0') {
181 if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
182 pch = strchr((xdigits = xdigits_u), ch);
185 val |= (pch - xdigits);
199 if (tp + INT16SZ > endp)
201 *tp++ = (unsigned char) (val >> 8) & 0xff;
202 *tp++ = (unsigned char) val & 0xff;
207 if (ch == '.' && ((tp + INADDRSZ) <= endp) &&
208 inet_pton4(curtok, tp) > 0) {
211 break; /* '\0' was seen by inet_pton4(). */
216 if (tp + INT16SZ > endp)
218 *tp++ = (unsigned char) (val >> 8) & 0xff;
219 *tp++ = (unsigned char) val & 0xff;
221 if (colonp != NULL) {
223 * Since some memmove()'s erroneously fail to handle
224 * overlapping regions, we'll do the shift by hand.
226 const apr_ssize_t n = tp - colonp;
229 for (i = 1; i <= n; i++) {
230 endp[- i] = colonp[n - i];
237 memcpy(dst, tmp, IN6ADDRSZ);