diff options
Diffstat (limited to 'usr.sbin/bind/lib/lwres/lwinetntop.c')
| -rw-r--r-- | usr.sbin/bind/lib/lwres/lwinetntop.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/usr.sbin/bind/lib/lwres/lwinetntop.c b/usr.sbin/bind/lib/lwres/lwinetntop.c deleted file mode 100644 index 45ea1484ece..00000000000 --- a/usr.sbin/bind/lib/lwres/lwinetntop.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * Copyright (C) Internet Systems Consortium, Inc. ("ISC") - * - * Permission to use, copy, modify, and/or 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 ISC DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL ISC 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. - */ - -/*! \file lwinetntop.c - */ -#if defined(LIBC_SCCS) && !defined(lint) -static char rcsid[] = - "$Id: lwinetntop.c,v 1.11 2019/12/17 01:46:38 sthen Exp $"; -#endif /* LIBC_SCCS and not lint */ - -#include <config.h> - -#include <errno.h> -#include <stdio.h> -#include <string.h> - -#include <lwres/net.h> -#include "print_p.h" - -#define NS_INT16SZ 2 -#define NS_IN6ADDRSZ 16 - -/* - * 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 const char *inet_ntop4(const unsigned char *src, char *dst, - size_t size); - -#ifdef AF_INET6 -static const char *inet_ntop6(const unsigned char *src, char *dst, - size_t size); -#endif - -/*! char * - * lwres_net_ntop(af, src, dst, size) - * convert a network format address to presentation format. - * return: - * pointer to presentation format address (`dst'), or NULL (see errno). - * author: - * Paul Vixie, 1996. - */ -const char * -lwres_net_ntop(int af, const void *src, char *dst, size_t size) { - switch (af) { - case AF_INET: - return (inet_ntop4(src, dst, size)); -#ifdef AF_INET6 - case AF_INET6: - return (inet_ntop6(src, dst, size)); -#endif - default: - errno = EAFNOSUPPORT; - return (NULL); - } - /* NOTREACHED */ -} - -/*! const char * - * inet_ntop4(src, dst, size) - * format an IPv4 address - * return: - * `dst' (as a const) - * notes: - * (1) uses no statics - * (2) takes a unsigned char* not an in_addr as input - * author: - * Paul Vixie, 1996. - */ -static const char * -inet_ntop4(const unsigned char *src, char *dst, size_t size) { - static const char fmt[] = "%u.%u.%u.%u"; - char tmp[sizeof("255.255.255.255")]; - size_t len; - - len = snprintf(tmp, sizeof(tmp), fmt, src[0], src[1], src[2], src[3]); - if (len >= size) { - errno = ENOSPC; - return (NULL); - } - strcpy(dst, tmp); - - return (dst); -} - -/*! const char * - * inet_ntop6(src, dst, size) - * convert IPv6 binary address into presentation (printable) format - * author: - * Paul Vixie, 1996. - */ -#ifdef AF_INET6 -static const char * -inet_ntop6(const unsigned char *src, char *dst, size_t size) { - /*! - * Note that int32_t and int16_t need only be "at least" large enough - * to contain a value of the specified size. On some systems, like - * Crays, there is no such thing as an integer variable with 16 bits. - * Keep this in mind if you think this function should have been coded - * to use pointer overlays. All the world's not a VAX. - */ - char tmp[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")], *tp; - struct { int base, len; } best, cur; - unsigned int words[NS_IN6ADDRSZ / NS_INT16SZ]; - int i; - - /* - * Preprocess: - * Copy the input (bytewise) array into a wordwise array. - * Find the longest run of 0x00's in src[] for :: shorthanding. - */ - memset(words, '\0', sizeof(words)); - for (i = 0; i < NS_IN6ADDRSZ; i++) - words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3)); - best.base = -1; - best.len = 0; - cur.base = -1; - cur.len = 0; - for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) { - if (words[i] == 0) { - if (cur.base == -1) - cur.base = i, cur.len = 1; - else - cur.len++; - } else { - if (cur.base != -1) { - if (best.base == -1 || cur.len > best.len) - best = cur; - cur.base = -1; - } - } - } - if (cur.base != -1) { - if (best.base == -1 || cur.len > best.len) - best = cur; - } - if (best.base != -1 && best.len < 2) - best.base = -1; - - /* - * Format the result. - */ - tp = tmp; - for (i = 0; i < (NS_IN6ADDRSZ / NS_INT16SZ); i++) { - /* Are we inside the best run of 0x00's? */ - if (best.base != -1 && i >= best.base && - i < (best.base + best.len)) { - if (i == best.base) - *tp++ = ':'; - continue; - } - /* Are we following an initial run of 0x00s or any real hex? */ - if (i != 0) - *tp++ = ':'; - /* Is this address an encapsulated IPv4? */ - if (i == 6 && best.base == 0 && - (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) { - if (!inet_ntop4(src+12, tp, - sizeof(tmp) - (tp - tmp))) - return (NULL); - tp += strlen(tp); - break; - } - tp += sprintf(tp, "%x", words[i]); /* XXX */ - } - /* Was it a trailing run of 0x00's? */ - if (best.base != -1 && (best.base + best.len) == - (NS_IN6ADDRSZ / NS_INT16SZ)) - *tp++ = ':'; - *tp++ = '\0'; - - /* - * Check for overflow, copy, and we're done. - */ - if ((size_t)(tp - tmp) > size) { - errno = ENOSPC; - return (NULL); - } - strcpy(dst, tmp); - return (dst); -} -#endif /* AF_INET6 */ |