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Diffstat (limited to 'src/backend/utils/adt/inet_net_ntop.c')
-rw-r--r--src/backend/utils/adt/inet_net_ntop.c75
1 files changed, 34 insertions, 41 deletions
diff --git a/src/backend/utils/adt/inet_net_ntop.c b/src/backend/utils/adt/inet_net_ntop.c
index fd19eadde11..4bd66add516 100644
--- a/src/backend/utils/adt/inet_net_ntop.c
+++ b/src/backend/utils/adt/inet_net_ntop.c
@@ -1,33 +1,37 @@
/*
- * Copyright (c) 1996 by Internet Software Consortium.
+ * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (c) 1996,1999 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.
+ * 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.
*
- * $PostgreSQL: pgsql/src/backend/utils/adt/inet_net_ntop.c,v 1.18 2003/11/29 19:51:58 pgsql Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/inet_net_ntop.c,v 1.18.4.1 2005/02/01 00:59:53 tgl Exp $
*/
+#if defined(LIBC_SCCS) && !defined(lint)
+static const char rcsid[] = "Id: inet_net_ntop.c,v 1.1.2.2 2004/03/09 09:17:27 marka Exp $";
+#endif
+
#include "postgres.h"
+#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
-#include <errno.h>
-
#include "utils/inet.h"
#include "utils/builtins.h"
+
#define NS_IN6ADDRSZ 16
#define NS_INT16SZ 2
@@ -81,7 +85,7 @@ inet_cidr_ntop(int af, const void *src, int bits, char *dst, size_t size)
* pointer to dst, or NULL if an error occurred (check errno).
* note:
* network byte order assumed. this means 192.5.5.240/28 has
- * 0x11110000 in its fourth octet.
+ * 0b11110000 in its fourth octet.
* author:
* Paul Vixie (ISC), July 1996
*/
@@ -98,23 +102,28 @@ inet_cidr_ntop_ipv4(const u_char *src, int bits, char *dst, size_t size)
errno = EINVAL;
return (NULL);
}
+
if (bits == 0)
{
if (size < sizeof "0")
goto emsgsize;
*dst++ = '0';
+ size--;
*dst = '\0';
}
/* Format whole octets. */
for (b = bits / 8; b > 0; b--)
{
- if (size < sizeof ".255")
+ if (size <= sizeof "255.")
goto emsgsize;
t = dst;
- if (dst != odst)
- *dst++ = '.';
dst += SPRINTF((dst, "%u", *src++));
+ if (b > 1)
+ {
+ *dst++ = '.';
+ *dst = '\0';
+ }
size -= (size_t) (dst - t);
}
@@ -122,7 +131,7 @@ inet_cidr_ntop_ipv4(const u_char *src, int bits, char *dst, size_t size)
b = bits % 8;
if (b > 0)
{
- if (size < sizeof ".255")
+ if (size <= sizeof ".255")
goto emsgsize;
t = dst;
if (dst != odst)
@@ -133,10 +142,9 @@ inet_cidr_ntop_ipv4(const u_char *src, int bits, char *dst, size_t size)
}
/* Format CIDR /width. */
- if (size < sizeof "/32")
+ if (size <= sizeof "/32")
goto emsgsize;
dst += SPRINTF((dst, "/%u", bits));
-
return (odst);
emsgsize:
@@ -146,7 +154,7 @@ emsgsize:
/*
* static char *
- * inet_net_ntop_ipv6(src, bits, fakebits, dst, size)
+ * inet_cidr_ntop_ipv6(src, bits, fakebits, dst, size)
* convert IPv6 network number from network to presentation format.
* generates CIDR style result always. Picks the shortest representation
* unless the IP is really IPv4.
@@ -173,7 +181,6 @@ inet_cidr_ntop_ipv6(const u_char *src, int bits, char *dst, size_t size)
tmp_zero_l;
int i;
int is_ipv4 = 0;
- int double_colon = 0;
unsigned char inbuf[16];
char outbuf[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255/128")];
char *cp;
@@ -187,14 +194,12 @@ inet_cidr_ntop_ipv6(const u_char *src, int bits, char *dst, size_t size)
}
cp = outbuf;
- double_colon = 0;
if (bits == 0)
{
*cp++ = ':';
*cp++ = ':';
*cp = '\0';
- double_colon = 1;
}
else
{
@@ -244,8 +249,8 @@ inet_cidr_ntop_ipv6(const u_char *src, int bits, char *dst, size_t size)
}
if (zero_l != words && zero_s == 0 && ((zero_l == 6) ||
- ((zero_l == 5 && s[10] == 0xff && s[11] == 0xff) ||
- ((zero_l == 7 && s[14] != 0 && s[15] != 1)))))
+ ((zero_l == 5 && s[10] == 0xff && s[11] == 0xff) ||
+ ((zero_l == 7 && s[14] != 0 && s[15] != 1)))))
is_ipv4 = 1;
/* Format whole words. */
@@ -257,10 +262,7 @@ inet_cidr_ntop_ipv6(const u_char *src, int bits, char *dst, size_t size)
if (p == zero_s)
*cp++ = ':';
if (p == words - 1)
- {
*cp++ = ':';
- double_colon = 1;
- }
s++;
s++;
continue;
@@ -286,18 +288,8 @@ inet_cidr_ntop_ipv6(const u_char *src, int bits, char *dst, size_t size)
}
}
}
-
- if (!double_colon)
- {
- if (bits < 128 - 32)
- cp += SPRINTF((cp, "::"));
- else if (bits < 128 - 16)
- cp += SPRINTF((cp, ":0"));
- }
-
/* Format CIDR /width. */
SPRINTF((cp, "/%u", bits));
-
if (strlen(outbuf) + 1 > size)
goto emsgsize;
strcpy(dst, outbuf);
@@ -309,6 +301,7 @@ emsgsize:
return (NULL);
}
+
/*
* char *
* inet_net_ntop(af, src, bits, dst, size)
@@ -368,7 +361,7 @@ inet_net_ntop_ipv4(const u_char *src, int bits, char *dst, size_t size)
/* Always format all four octets, regardless of mask length. */
for (b = len; b > 0; b--)
{
- if (size < sizeof ".255")
+ if (size <= sizeof ".255")
goto emsgsize;
t = dst;
if (dst != odst)
@@ -380,7 +373,7 @@ inet_net_ntop_ipv4(const u_char *src, int bits, char *dst, size_t size)
/* don't print masklen if 32 bits */
if (bits != 32)
{
- if (size < sizeof "/32")
+ if (size <= sizeof "/32")
goto emsgsize;
dst += SPRINTF((dst, "/%u", bits));
}
@@ -401,7 +394,7 @@ decoct(const u_char *src, int bytes, char *dst, size_t size)
for (b = 1; b <= bytes; b++)
{
- if (size < sizeof "255.")
+ if (size <= sizeof "255.")
return (0);
t = dst;
dst += SPRINTF((dst, "%u", *src++));
generated by cgit v1.2.3 (git 2.25.1) at 2025-07-23 05:54:38 +0000