2 * Copyright (c) 1996,1999 by Internet Software Consortium.
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
9 * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
10 * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
11 * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
12 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
13 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
14 * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
20 #include "inet_addr-int.h"
27 #include <wsutil/ws_diag_control.h>
30 #define __P(args) args
37 #define NS_IN6ADDRSZ 16
46 * WARNING: Don't even consider trying to compile this on a system where
47 * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
51 static int inet_pton4 __P((const char *src, u_char *dst));
54 static int inet_pton6 __P((const char *src, u_char *dst));
58 * inet_pton(af, src, dst)
59 * convert from presentation format (which usually means ASCII printable)
60 * to network format (which is usually some kind of binary format).
62 * 1 if the address was valid for the specified address family
63 * 0 if the address wasn't valid (`dst' is untouched in this case)
64 * -1 if some other error occurred (`dst' is untouched in this case, too)
69 inet_pton(int af, const char *src, void *dst)
74 return (inet_pton4(src, dst));
78 return (inet_pton6(src, dst));
89 * inet_pton4(src, dst)
90 * like inet_aton() but without all the hexadecimal and shorthand.
92 * 1 if `src' is a valid dotted quad, else 0.
94 * does not touch `dst' unless it's returning 1.
99 inet_pton4(const char *src, u_char *dst)
101 static const char digits[] = "0123456789";
102 int saw_digit, octets, ch;
103 u_char tmp[NS_INADDRSZ], *tp;
108 while ((ch = *src++) != '\0') {
111 if ((pch = strchr(digits, ch)) != NULL) {
112 size_t new = *tp * 10 + (pch - digits);
122 } else if (ch == '.' && saw_digit) {
132 memcpy(dst, tmp, NS_INADDRSZ);
139 * inet_pton6(src, dst)
140 * convert presentation level address to network order binary form.
142 * 1 if `src' is a valid [RFC1884 2.2] address, else 0.
144 * (1) does not touch `dst' unless it's returning 1.
145 * (2) :: in a full address is silently ignored.
147 * inspired by Mark Andrews.
152 inet_pton6(const char *src, u_char *dst)
154 static const char xdigits_l[] = "0123456789abcdef",
155 xdigits_u[] = "0123456789ABCDEF";
156 u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
157 const char *xdigits, *curtok;
161 memset((tp = tmp), '\0', NS_IN6ADDRSZ);
162 endp = tp + NS_IN6ADDRSZ;
164 /* Leading :: requires some special handling. */
171 while ((ch = *src++) != '\0') {
174 if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL)
175 pch = strchr((xdigits = xdigits_u), ch);
178 val |= (pch - xdigits);
191 } else if (*src == '\0') {
194 if (tp + NS_INT16SZ > endp)
196 *tp++ = (u_char) (val >> 8) & 0xff;
197 *tp++ = (u_char) val & 0xff;
202 if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
203 inet_pton4(curtok, tp) > 0) {
206 break; /* '\0' was seen by inet_pton4(). */
211 if (tp + NS_INT16SZ > endp)
213 *tp++ = (u_char) (val >> 8) & 0xff;
214 *tp++ = (u_char) val & 0xff;
216 if (colonp != NULL) {
218 * Since some memmove()'s erroneously fail to handle
219 * overlapping regions, we'll do the shift by hand.
221 const int n = (int) (tp - colonp);
226 for (i = 1; i <= n; i++) {
227 endp[- i] = colonp[n - i];
234 memcpy(dst, tmp, NS_IN6ADDRSZ);
240 * Editor modelines - http://www.wireshark.org/tools/modelines.html
245 * indent-tabs-mode: t
248 * vi: set shiftwidth=8 tabstop=8 noexpandtab:
249 * :indentSize=8:tabSize=8:noTabs=false: