From da9dcf826bea000908b63297ef7d90e8a64d390e Mon Sep 17 00:00:00 2001
From: "Marc G. Fournier" <scrappy@hub.org>
Date: Wed, 19 Mar 1997 02:13:27 +0000
Subject: [PATCH] there, that's fixed
---
src/backend/port/inet_aton.c | 142 +++++++++++++++++++++++++++++++++++
src/backend/port/inet_aton.h | 2 +
2 files changed, 144 insertions(+)
create mode 100644 src/backend/port/inet_aton.c
create mode 100644 src/backend/port/inet_aton.h
diff --git a/src/backend/port/inet_aton.c b/src/backend/port/inet_aton.c
new file mode 100644
index 00000000000..37c11b621b7
--- /dev/null
+++ b/src/backend/port/inet_aton.c
@@ -0,0 +1,142 @@
+/*
+ *
+ * This inet_aton() function was taken from the GNU C library and
+ * incorporated into Postgres for those systems which do not have this
+ * routine in their standard C libraries.
+ *
+ * The function was been extracted whole from the file inet_aton.c in
+ * Release 5.3.12 of the Linux C library, which is derived from the
+ * GNU C library, by Bryan Henderson in October 1996. The copyright
+ * notice from that file is below.
+ */
+
+/*
+ * Copyright (c) 1983, 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE. */
+
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <ctype.h>
+#include "inet_aton.h"
+
+/*
+ * Check whether "cp" is a valid ascii representation
+ * of an Internet address and convert to a binary address.
+ * Returns 1 if the address is valid, 0 if not.
+ * This replaces inet_addr, the return value from which
+ * cannot distinguish between failure and a local broadcast address.
+ */
+int
+inet_aton(const char *cp, struct in_addr *addr)
+{
+ register u_long val;
+ register int base, n;
+ register char c;
+ u_int parts[4];
+ register u_int *pp = parts;
+
+ for (;;) {
+ /*
+ * Collect number up to ``.''.
+ * Values are specified as for C:
+ * 0x=hex, 0=octal, other=decimal.
+ */
+ val = 0; base = 10;
+ if (*cp == '0') {
+ if (*++cp == 'x' || *cp == 'X')
+ base = 16, cp++;
+ else
+ base = 8;
+ }
+ while ((c = *cp) != '\0') {
+ if (isascii(c) && isdigit(c)) {
+ val = (val * base) + (c - '0');
+ cp++;
+ continue;
+ }
+ if (base == 16 && isascii(c) && isxdigit(c)) {
+ val = (val << 4) +
+ (c + 10 - (islower(c) ? 'a' : 'A'));
+ cp++;
+ continue;
+ }
+ break;
+ }
+ if (*cp == '.') {
+ /*
+ * Internet format:
+ * a.b.c.d
+ * a.b.c (with c treated as 16-bits)
+ * a.b (with b treated as 24 bits)
+ */
+ if (pp >= parts + 3 || val > 0xff)
+ return (0);
+ *pp++ = val, cp++;
+ } else
+ break;
+ }
+ /*
+ * Check for trailing characters.
+ */
+ if (*cp && (!isascii(*cp) || !isspace(*cp)))
+ return (0);
+ /*
+ * Concoct the address according to
+ * the number of parts specified.
+ */
+ n = pp - parts + 1;
+ switch (n) {
+
+ case 1: /* a -- 32 bits */
+ break;
+
+ case 2: /* a.b -- 8.24 bits */
+ if (val > 0xffffff)
+ return (0);
+ val |= parts[0] << 24;
+ break;
+
+ case 3: /* a.b.c -- 8.8.16 bits */
+ if (val > 0xffff)
+ return (0);
+ val |= (parts[0] << 24) | (parts[1] << 16);
+ break;
+
+ case 4: /* a.b.c.d -- 8.8.8.8 bits */
+ if (val > 0xff)
+ return (0);
+ val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
+ break;
+ }
+ if (addr)
+ addr->s_addr = htonl(val);
+ return (1);
+}
diff --git a/src/backend/port/inet_aton.h b/src/backend/port/inet_aton.h
new file mode 100644
index 00000000000..6909bd2b12d
--- /dev/null
+++ b/src/backend/port/inet_aton.h
@@ -0,0 +1,2 @@
+int
+inet_aton(const char *cp, struct in_addr *addr);
--
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