svn commit: r258677 - head/sbin/ipfw

[Alexander V. Chernikov]

Author: melifaro
Date: Wed Nov 27 10:10:25 2013
New Revision: 258677
URL: http://svnweb.freebsd.org/changeset/base/258677

Log:
  Fix key lookup in ipfw(8) broken since r232865.
  Print warning for IPv4 address strings which are valid in
  inet_aton() but not valid in inet_pton(). (1)
  
  Found by:	Özkan KIRIK <ozkan.kirik at gmail.com>
  Submitted by:	Ian Smith <smithi at nimnet.asn.au> (1)
  MFC after:	2 weeks
  Sponsored by:	Yandex LLC

Modified:
  head/sbin/ipfw/ipfw2.c

Modified: head/sbin/ipfw/ipfw2.c
==============================================================================
--- head/sbin/ipfw/ipfw2.c	Wed Nov 27 08:39:48 2013	(r258676)
+++ head/sbin/ipfw/ipfw2.c	Wed Nov 27 10:10:25 2013	(r258677)
@@ -4274,13 +4274,24 @@ table_fill_xentry(char *arg, ipfw_table_
 			addrlen = sizeof(struct in6_addr);
 		} else {
 			/* Port or any other key */
-			key = strtol(arg, &p, 10);
 			/* Skip non-base 10 entries like 'fa1' */
-			if (p != arg) {
+			key = strtol(arg, &p, 10);
+			if (*p == '\0') {
 				pkey = (uint32_t *)paddr;
 				*pkey = htonl(key);
 				type = IPFW_TABLE_CIDR;
+				masklen = 32;
 				addrlen = sizeof(uint32_t);
+			} else if ((p != arg) && (*p == '.')) {
+				/*
+				 * Warn on IPv4 address strings
+				 * which are "valid" for inet_aton() but not
+				 * in inet_pton().
+				 *
+				 * Typical examples: '10.5' or '10.0.0.05'
+				 */
+				errx(EX_DATAERR,
+				    "Invalid IPv4 address: %s", arg);
 			}
 		}
 	}