summaryrefslogtreecommitdiffstats
path: root/replace/inet_ntop.c
diff options
context:
space:
mode:
Diffstat (limited to 'replace/inet_ntop.c')
-rw-r--r--replace/inet_ntop.c191
1 files changed, 0 insertions, 191 deletions
diff --git a/replace/inet_ntop.c b/replace/inet_ntop.c
deleted file mode 100644
index fb3d8e90c..000000000
--- a/replace/inet_ntop.c
+++ /dev/null
@@ -1,191 +0,0 @@
-/*
- * Copyright (C) 1996-2001 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 "replace.h"
-#include "system/network.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,
- socklen_t size);
-
-#ifdef AF_INET6
-static const char *inet_ntop6(const unsigned char *src, char *dst,
- socklen_t size);
-#endif
-
-/* char *
- * isc_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 *
-rep_inet_ntop(int af, const void *src, char *dst, socklen_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, socklen_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);
- }
- memcpy(dst, tmp, len + 1);
-
- return (dst);
-}
-
-/* const char *
- * isc_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, socklen_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, inc;
-
- /*
- * 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;
- }
- inc = snprintf(tp, 5, "%x", words[i]);
- if (inc >= 5) {
- abort();
- }
- tp += inc;
- }
- /* 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);
- }
- memcpy(dst, tmp, tp - tmp);
- return (dst);
-}
-#endif /* AF_INET6 */