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authoryanick <yanick@cvs.openbsd.org>1999-05-03 22:31:15 +0000
committeryanick <yanick@cvs.openbsd.org>1999-05-03 22:31:15 +0000
commit2443601c066e51722e4fbf02ef25b92cba67be74 (patch)
treeb151077a5b482ea2335e3161b042eac61ac3d54d /lib/libc/net
parent79cba73d6ef7deefbea7bc76bded3380f4482a5a (diff)
Add octect sanity checking
Diffstat (limited to 'lib/libc/net')
-rw-r--r--lib/libc/net/inet_addr.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/libc/net/inet_addr.c b/lib/libc/net/inet_addr.c
index 5e4dcdafb28..6203ccdaacf 100644
--- a/lib/libc/net/inet_addr.c
+++ b/lib/libc/net/inet_addr.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: inet_addr.c,v 1.5 1997/04/05 21:13:10 millert Exp $ */
+/* $OpenBSD: inet_addr.c,v 1.6 1999/05/03 22:31:14 yanick Exp $ */
/*
* ++Copyright++ 1983, 1990, 1993
@@ -60,7 +60,7 @@
static char sccsid[] = "@(#)inet_addr.c 8.1 (Berkeley) 6/17/93";
static char rcsid[] = "$From: inet_addr.c,v 8.5 1996/08/05 08:31:35 vixie Exp $";
#else
-static char rcsid[] = "$OpenBSD: inet_addr.c,v 1.5 1997/04/05 21:13:10 millert Exp $";
+static char rcsid[] = "$OpenBSD: inet_addr.c,v 1.6 1999/05/03 22:31:14 yanick Exp $";
#endif
#endif /* LIBC_SCCS and not lint */
@@ -164,19 +164,19 @@ inet_aton(cp, addr)
break;
case 2: /* a.b -- 8.24 bits */
- if (val > 0xffffff)
+ if ((val > 0xffffff) || (parts[0] > 0xff))
return (0);
val |= parts[0] << 24;
break;
case 3: /* a.b.c -- 8.8.16 bits */
- if (val > 0xffff)
+ if ((val > 0xffff) || (parts[0] > 0xff) || (parts[1] > 0xff))
return (0);
val |= (parts[0] << 24) | (parts[1] << 16);
break;
case 4: /* a.b.c.d -- 8.8.8.8 bits */
- if (val > 0xff)
+ if ((val > 0xff) || (parts[0] > 0xff) || (parts[1] > 0xff) || (parts[2] > 0xff))
return (0);
val |= (parts[0] << 24) | (parts[1] << 16) | (parts[2] << 8);
break;