diff options
Diffstat (limited to 'contrib/bind/lib/inet/inet_cidr_pton.c')
| -rw-r--r-- | contrib/bind/lib/inet/inet_cidr_pton.c | 275 |
1 files changed, 0 insertions, 275 deletions
diff --git a/contrib/bind/lib/inet/inet_cidr_pton.c b/contrib/bind/lib/inet/inet_cidr_pton.c deleted file mode 100644 index b8a7226..0000000 --- a/contrib/bind/lib/inet/inet_cidr_pton.c +++ /dev/null @@ -1,275 +0,0 @@ -/* - * Copyright (c) 1998,1999 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. - */ - -#if defined(LIBC_SCCS) && !defined(lint) -static const char rcsid[] = "$Id: inet_cidr_pton.c,v 8.7 2001/09/28 04:21:28 marka Exp $"; -#endif - -#include "port_before.h" - -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <arpa/nameser.h> -#include <arpa/inet.h> - -#include <isc/assertions.h> -#include <ctype.h> -#include <errno.h> -#include <stdio.h> -#include <string.h> -#include <stdlib.h> - -#include "port_after.h" - -#ifdef SPRINTF_CHAR -# define SPRINTF(x) strlen(sprintf/**/x) -#else -# define SPRINTF(x) ((size_t)sprintf x) -#endif - -static int inet_cidr_pton_ipv4 __P((const char *src, u_char *dst, - int *bits, int ipv6)); -static int inet_cidr_pton_ipv6 __P((const char *src, u_char *dst, - int *bits)); - -static int getbits(const char *, int ipv6); - -/* - * int - * inet_cidr_pton(af, src, dst, *bits) - * convert network address from presentation to network format. - * accepts inet_pton()'s input for this "af" plus trailing "/CIDR". - * "dst" is assumed large enough for its "af". "bits" is set to the - * /CIDR prefix length, which can have defaults (like /32 for IPv4). - * return: - * -1 if an error occurred (inspect errno; ENOENT means bad format). - * 0 if successful conversion occurred. - * note: - * 192.5.5.1/28 has a nonzero host part, which means it isn't a network - * as called for by inet_net_pton() but it can be a host address with - * an included netmask. - * author: - * Paul Vixie (ISC), October 1998 - */ -int -inet_cidr_pton(int af, const char *src, void *dst, int *bits) { - switch (af) { - case AF_INET: - return (inet_cidr_pton_ipv4(src, dst, bits, 0)); - case AF_INET6: - return (inet_cidr_pton_ipv6(src, dst, bits)); - default: - errno = EAFNOSUPPORT; - return (-1); - } -} - -static const char digits[] = "0123456789"; - -static int -inet_cidr_pton_ipv4(const char *src, u_char *dst, int *pbits, int ipv6) { - const u_char *odst = dst; - int n, ch, tmp, bits; - size_t size = 4; - - /* Get the mantissa. */ - while (ch = *src++, (isascii(ch) && isdigit(ch))) { - tmp = 0; - do { - n = strchr(digits, ch) - digits; - INSIST(n >= 0 && n <= 9); - tmp *= 10; - tmp += n; - if (tmp > 255) - goto enoent; - } while ((ch = *src++) != '\0' && isascii(ch) && isdigit(ch)); - if (size-- == 0) - goto emsgsize; - *dst++ = (u_char) tmp; - if (ch == '\0' || ch == '/') - break; - if (ch != '.') - goto enoent; - } - - /* Get the prefix length if any. */ - bits = -1; - if (ch == '/' && dst > odst) { - bits = getbits(src, ipv6); - if (bits == -2) - goto enoent; - } else if (ch != '\0') - goto enoent; - - /* Prefix length can default to /32 only if all four octets spec'd. */ - if (bits == -1) { - if (dst - odst == 4) - bits = ipv6 ? 128 : 32; - else - goto enoent; - } - - /* If nothing was written to the destination, we found no address. */ - if (dst == odst) - goto enoent; - - /* If prefix length overspecifies mantissa, life is bad. */ - if (((bits - (ipv6 ? 96 : 0)) / 8) > (dst - odst)) - goto enoent; - - /* Extend address to four octets. */ - while (size-- > 0) - *dst++ = 0; - - *pbits = bits; - return (0); - - enoent: - errno = ENOENT; - return (-1); - - emsgsize: - errno = EMSGSIZE; - return (-1); -} - -static int -inet_cidr_pton_ipv6(const char *src, u_char *dst, int *pbits) { - static const char xdigits_l[] = "0123456789abcdef", - xdigits_u[] = "0123456789ABCDEF"; - u_char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp; - const char *xdigits, *curtok; - int ch, saw_xdigit; - u_int val; - int bits; - - memset((tp = tmp), '\0', NS_IN6ADDRSZ); - endp = tp + NS_IN6ADDRSZ; - colonp = NULL; - /* Leading :: requires some special handling. */ - if (*src == ':') - if (*++src != ':') - return (0); - curtok = src; - saw_xdigit = 0; - val = 0; - bits = -1; - while ((ch = *src++) != '\0') { - const char *pch; - - if ((pch = strchr((xdigits = xdigits_l), ch)) == NULL) - pch = strchr((xdigits = xdigits_u), ch); - if (pch != NULL) { - val <<= 4; - val |= (pch - xdigits); - if (val > 0xffff) - return (0); - saw_xdigit = 1; - continue; - } - if (ch == ':') { - curtok = src; - if (!saw_xdigit) { - if (colonp) - return (0); - colonp = tp; - continue; - } else if (*src == '\0') { - return (0); - } - if (tp + NS_INT16SZ > endp) - return (0); - *tp++ = (u_char) (val >> 8) & 0xff; - *tp++ = (u_char) val & 0xff; - saw_xdigit = 0; - val = 0; - continue; - } - if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) && - inet_cidr_pton_ipv4(curtok, tp, &bits, 1) == 0) { - tp += NS_INADDRSZ; - saw_xdigit = 0; - break; /* '\0' was seen by inet_pton4(). */ - } - if (ch == '/') { - bits = getbits(src, 1); - if (bits == -2) - goto enoent; - break; - } - goto enoent; - } - if (saw_xdigit) { - if (tp + NS_INT16SZ > endp) - goto emsgsize; - *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; - - if (tp == endp) - goto enoent; - for (i = 1; i <= n; i++) { - endp[- i] = colonp[n - i]; - colonp[n - i] = 0; - } - tp = endp; - } - - memcpy(dst, tmp, NS_IN6ADDRSZ); - - *pbits = bits; - return (0); - - enoent: - errno = ENOENT; - return (-1); - - emsgsize: - errno = EMSGSIZE; - return (-1); -} - -int -getbits(const char *src, int ipv6) { - int bits = 0; - char *cp, ch; - - if (*src == '\0') /* syntax */ - return (-2); - do { - ch = *src++; - cp = strchr(digits, ch); - if (cp == NULL) /* syntax */ - return (-2); - bits *= 10; - bits += cp - digits; - if (bits == 0 && *src != '\0') /* no leading zeros */ - return (-2); - if (bits > (ipv6 ? 128 : 32)) /* range error */ - return (-2); - } while (*src != '\0'); - - return (bits); -} |
