Virgin import of ntpd 4.2.6p5.vendor/ntp/4.2.6p5

When the series of commits is complete, things like
https://cert.litnet.lt/en/docs/ntp-distributed-reflection-dos-attacks
should be fixed.

PR:		bin/148836 (except that we import a newer version)
Asked by:	Too many
MFC after:	2 weeks

1 files changed, 45 insertions, 0 deletions

diff --git a/lib/isc/region.c b/lib/isc/region.c
new file mode 100644
index 000000000000..cf64979003e9
--- /dev/null
+++ b/lib/isc/region.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 2002  Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or 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 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.
+ */
+
+/* $Id: region.c,v 1.7 2007/06/19 23:47:17 tbox Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <isc/region.h>
+#include <isc/util.h>
+
+int
+isc_region_compare(isc_region_t *r1, isc_region_t *r2) {
+	unsigned int l;
+	int result;
+
+	REQUIRE(r1 != NULL);
+	REQUIRE(r2 != NULL);
+	       
+	l = (r1->length < r2->length) ? r1->length : r2->length;
+
+	if ((result = memcmp(r1->base, r2->base, l)) != 0)
+		return ((result < 0) ? -1 : 1);
+	else
+		return ((r1->length == r2->length) ? 0 :
+			(r1->length < r2->length) ? -1 : 1);
+}