The last of the bind-4.9.3-REL resolver merges.

1 files changed, 53 insertions, 25 deletions

diff --git a/lib/libc/net/inet_addr.c b/lib/libc/net/inet_addr.c
index f69d0fcd8c0f..a1ac89951970 100644
--- a/lib/libc/net/inet_addr.c
+++ b/lib/libc/net/inet_addr.c
@@ -1,7 +1,9 @@
 /*
+ * ++Copyright++ 1983, 1990, 1993
+ * -
  * Copyright (c) 1983, 1990, 1993
- *	The Regents of the University of California.  All rights reserved.
- *
+ *    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:
@@ -12,12 +14,12 @@
  *    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.
+ * 	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
@@ -29,10 +31,31 @@
  * 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.
+ * -
+ * Portions Copyright (c) 1993 by Digital Equipment Corporation.
+ * 
+ * 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, and that
+ * the name of Digital Equipment Corporation not be used in advertising or
+ * publicity pertaining to distribution of the document or software without
+ * specific, written prior permission.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS" AND DIGITAL EQUIPMENT CORP. DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS.   IN NO EVENT SHALL DIGITAL EQUIPMENT
+ * CORPORATION 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.
+ * -
+ * --Copyright--
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
 static char sccsid[] = "@(#)inet_addr.c	8.1 (Berkeley) 6/17/93";
+static char rcsid[] = "$Id$";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/param.h>
@@ -55,7 +78,7 @@ inet_addr(cp)
 	return (INADDR_NONE);
 }
 
-/*
+/* 
  * 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.
@@ -73,50 +96,52 @@ inet_aton(cp, addr)
 	u_int parts[4];
 	register u_int *pp = parts;
 
+	c = *cp;
 	for (;;) {
 		/*
 		 * Collect number up to ``.''.
 		 * Values are specified as for C:
-		 * 0x=hex, 0=octal, other=decimal.
+		 * 0x=hex, 0=octal, isdigit=decimal.
 		 */
+		if (!isdigit(c))
+			return (0);
 		val = 0; base = 10;
-		if (*cp == '0') {
-			if (*++cp == 'x' || *cp == 'X')
-				base = 16, cp++;
+		if (c == '0') {
+			c = *++cp;
+			if (c == 'x' || c == 'X')
+				base = 16, c = *++cp;
 			else
 				base = 8;
 		}
-		while ((c = *cp) != '\0') {
+		for (;;) {
 			if (isascii(c) && isdigit(c)) {
 				val = (val * base) + (c - '0');
-				cp++;
-				continue;
-			}
-			if (base == 16 && isascii(c) && isxdigit(c)) {
-				val = (val << 4) +
+				c = *++cp;
+			} else if (base == 16 && isascii(c) && isxdigit(c)) {
+				val = (val << 4) |
 					(c + 10 - (islower(c) ? 'a' : 'A'));
-				cp++;
-				continue;
-			}
-			break;
+				c = *++cp;
+			} else
+				break;
 		}
-		if (*cp == '.') {
+		if (c == '.') {
 			/*
 			 * Internet format:
 			 *	a.b.c.d
-			 *	a.b.c	(with c treated as 16-bits)
+			 *	a.b.c	(with c treated as 16 bits)
 			 *	a.b	(with b treated as 24 bits)
 			 */
-			if (pp >= parts + 3 || val > 0xff)
+			if (pp >= parts + 3)
 				return (0);
-			*pp++ = val, cp++;
+			*pp++ = val;
+			c = *++cp;
 		} else
 			break;
 	}
 	/*
 	 * Check for trailing characters.
 	 */
-	if (*cp && (!isascii(*cp) || !isspace(*cp)))
+	if (c != '\0' && (!isascii(c) || !isspace(c)))
 		return (0);
 	/*
 	 * Concoct the address according to
@@ -125,6 +150,9 @@ inet_aton(cp, addr)
 	n = pp - parts + 1;
 	switch (n) {
 
+	case 0:
+		return (0);		/* initial nondigit */
+
 	case 1:				/* a -- 32 bits */
 		break;