diff options
Diffstat (limited to 'libc/inet/inet_pton.c')
| -rw-r--r-- | libc/inet/inet_pton.c | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/libc/inet/inet_pton.c b/libc/inet/inet_pton.c deleted file mode 100644 index 4caf981..0000000 --- a/libc/inet/inet_pton.c +++ /dev/null @@ -1,212 +0,0 @@ -/* $OpenBSD: inet_pton.c,v 1.7 2006/12/30 23:37:37 itojun Exp $ */ - -/* Copyright (c) 1996 by Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE - * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS - * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - */ - -#include <sys/param.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/inet.h> -#include "arpa_nameser.h" -#include <string.h> -#include <errno.h> - -/* - * WARNING: Don't even consider trying to compile this on a system where - * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. - */ - -static int inet_pton4(const char *src, u_char *dst); -static int inet_pton6(const char *src, u_char *dst); - -/* int - * inet_pton(af, src, dst) - * convert from presentation format (which usually means ASCII printable) - * to network format (which is usually some kind of binary format). - * return: - * 1 if the address was valid for the specified address family - * 0 if the address wasn't valid (`dst' is untouched in this case) - * -1 if some other error occurred (`dst' is untouched in this case, too) - * author: - * Paul Vixie, 1996. - */ -int -inet_pton(int af, const char *src, void *dst) -{ - switch (af) { - case AF_INET: - return (inet_pton4(src, dst)); - case AF_INET6: - return (inet_pton6(src, dst)); - default: - errno = EAFNOSUPPORT; - return (-1); - } - /* NOTREACHED */ -} - -/* int - * inet_pton4(src, dst) - * like inet_aton() but without all the hexadecimal and shorthand. - * return: - * 1 if `src' is a valid dotted quad, else 0. - * notice: - * does not touch `dst' unless it's returning 1. - * author: - * Paul Vixie, 1996. - */ -static int -inet_pton4(const char *src, u_char *dst) -{ - static const char digits[] = "0123456789"; - int saw_digit, octets, ch; - u_char tmp[INADDRSZ], *tp; - - saw_digit = 0; - octets = 0; - *(tp = tmp) = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - if ((pch = strchr(digits, ch)) != NULL) { - u_int new = *tp * 10 + (pch - digits); - - if (new > 255) - return (0); - if (! saw_digit) { - if (++octets > 4) - return (0); - saw_digit = 1; - } - *tp = new; - } else if (ch == '.' && saw_digit) { - if (octets == 4) - return (0); - *++tp = 0; - saw_digit = 0; - } else - return (0); - } - if (octets < 4) - return (0); - - memcpy(dst, tmp, INADDRSZ); - return (1); -} - -/* int - * inet_pton6(src, dst) - * convert presentation level address to network order binary form. - * return: - * 1 if `src' is a valid [RFC1884 2.2] address, else 0. - * notice: - * (1) does not touch `dst' unless it's returning 1. - * (2) :: in a full address is silently ignored. - * credit: - * inspired by Mark Andrews. - * author: - * Paul Vixie, 1996. - */ -static int -inet_pton6(const char *src, u_char *dst) -{ - static const char xdigits_l[] = "0123456789abcdef", - xdigits_u[] = "0123456789ABCDEF"; - u_char tmp[IN6ADDRSZ], *tp, *endp, *colonp; - const char *xdigits, *curtok; - int ch, saw_xdigit, count_xdigit; - u_int val; - - memset((tp = tmp), '\0', IN6ADDRSZ); - endp = tp + IN6ADDRSZ; - colonp = NULL; - /* Leading :: requires some special handling. */ - if (*src == ':') - if (*++src != ':') - return (0); - curtok = src; - saw_xdigit = count_xdigit = 0; - val = 0; - while ((ch = *src++) != '\0') { - const char *pch; - - if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) - pch = strchr((xdigits = xdigits_u), ch); - if (pch != NULL) { - if (count_xdigit >= 4) - return (0); - val <<= 4; - val |= (pch - xdigits); - if (val > 0xffff) - return (0); - saw_xdigit = 1; - count_xdigit++; - continue; - } - if (ch == ':') { - curtok = src; - if (!saw_xdigit) { - if (colonp) - return (0); - colonp = tp; - continue; - } else if (*src == '\0') { - return (0); - } - if (tp + INT16SZ > endp) - return (0); - *tp++ = (u_char) (val >> 8) & 0xff; - *tp++ = (u_char) val & 0xff; - saw_xdigit = 0; - count_xdigit = 0; - val = 0; - continue; - } - if (ch == '.' && ((tp + INADDRSZ) <= endp) && - inet_pton4(curtok, tp) > 0) { - tp += INADDRSZ; - saw_xdigit = 0; - count_xdigit = 0; - break; /* '\0' was seen by inet_pton4(). */ - } - return (0); - } - if (saw_xdigit) { - if (tp + INT16SZ > endp) - return (0); - *tp++ = (u_char) (val >> 8) & 0xff; - *tp++ = (u_char) val & 0xff; - } - if (colonp != NULL) { - /* - * Since some memmove()'s erroneously fail to handle - * overlapping regions, we'll do the shift by hand. - */ - const int n = tp - colonp; - int i; - - for (i = 1; i <= n; i++) { - endp[- i] = colonp[n - i]; - colonp[n - i] = 0; - } - tp = endp; - } - if (tp != endp) - return (0); - memcpy(dst, tmp, IN6ADDRSZ); - return (1); -} |