1 files changed, 112 insertions, 0 deletions
diff --git a/lib/isc/tests/safe_test.c b/lib/isc/tests/safe_test.c
new file mode 100644
index 0000000..f721cd1
--- /dev/null
+++ b/lib/isc/tests/safe_test.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+/* ! \file */
+
+#include <config.h>
+
+#include <atf-c.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <isc/safe.h>
+#include <isc/util.h>
+
+ATF_TC(isc_safe_memequal);
+ATF_TC_HEAD(isc_safe_memequal, tc) {
+	atf_tc_set_md_var(tc, "descr", "safe memequal()");
+}
+ATF_TC_BODY(isc_safe_memequal, tc) {
+	UNUSED(tc);
+
+	ATF_CHECK(isc_safe_memequal("test", "test", 4));
+	ATF_CHECK(!isc_safe_memequal("test", "tesc", 4));
+	ATF_CHECK(isc_safe_memequal("\x00\x00\x00\x00",
+				    "\x00\x00\x00\x00", 4));
+	ATF_CHECK(!isc_safe_memequal("\x00\x00\x00\x00",
+				     "\x00\x00\x00\x01", 4));
+	ATF_CHECK(!isc_safe_memequal("\x00\x00\x00\x02",
+				     "\x00\x00\x00\x00", 4));
+}
+
+ATF_TC(isc_safe_memcompare);
+ATF_TC_HEAD(isc_safe_memcompare, tc) {
+	atf_tc_set_md_var(tc, "descr", "safe memcompare()");
+}
+ATF_TC_BODY(isc_safe_memcompare, tc) {
+	UNUSED(tc);
+
+	ATF_CHECK(isc_safe_memcompare("test", "test", 4) == 0);
+	ATF_CHECK(isc_safe_memcompare("test", "tesc", 4) > 0);
+	ATF_CHECK(isc_safe_memcompare("test", "tesy", 4) < 0);
+	ATF_CHECK(isc_safe_memcompare("\x00\x00\x00\x00",
+				      "\x00\x00\x00\x00", 4) == 0);
+	ATF_CHECK(isc_safe_memcompare("\x00\x00\x00\x00",
+				      "\x00\x00\x00\x01", 4) < 0);
+	ATF_CHECK(isc_safe_memcompare("\x00\x00\x00\x02",
+				      "\x00\x00\x00\x00", 4) > 0);
+}
+
+ATF_TC(isc_safe_memwipe);
+ATF_TC_HEAD(isc_safe_memwipe, tc) {
+	atf_tc_set_md_var(tc, "descr", "isc_safe_memwipe()");
+}
+ATF_TC_BODY(isc_safe_memwipe, tc) {
+	UNUSED(tc);
+
+	/* These should pass. */
+	isc_safe_memwipe(NULL, 0);
+	isc_safe_memwipe((void *) -1, 0);
+	isc_safe_memwipe(NULL, 42);
+
+	/*
+	 * isc_safe_memwipe(ptr, size) should function same as
+	 * memset(ptr, 0, size);
+	 */
+	{
+		char buf1[4] = { 1, 2, 3, 4 };
+		char buf2[4] = { 1, 2, 3, 4 };
+
+		isc_safe_memwipe(buf1, sizeof(buf1));
+		memset(buf2, 0, sizeof(buf2));
+
+		ATF_CHECK(memcmp(buf1, buf2, sizeof(buf1)) == 0);
+	}
+
+	/*
+	 * Boundary test.
+	 */
+	{
+		char buf1[4] = { 1, 2, 3, 4 };
+		char buf2[4] = { 1, 2, 3, 4 };
+
+		/*
+		 * We wipe 3 elements on purpose, keeping the 4th in
+		 * place.
+		 */
+		isc_safe_memwipe(buf1, 3);
+		memset(buf2, 0, 3);
+
+		ATF_CHECK(memcmp(buf1, buf2, sizeof(buf1)) == 0);
+	}
+}
+
+/*
+ * Main
+ */
+ATF_TP_ADD_TCS(tp) {
+	ATF_TP_ADD_TC(tp, isc_safe_memequal);
+	ATF_TP_ADD_TC(tp, isc_safe_memcompare);
+	ATF_TP_ADD_TC(tp, isc_safe_memwipe);
+	return (atf_no_error());
+}