3 files changed, 135 insertions, 1 deletions
diff --git a/regress/lib/libssl/Makefile b/regress/lib/libssl/Makefile
index 8dc92d433a0..678016e0508 100644
--- a/regress/lib/libssl/Makefile
+++ b/regress/lib/libssl/Makefile
@@ -1,4 +1,4 @@
-#	$OpenBSD: Makefile,v 1.36 2020/01/25 05:24:49 jsing Exp $
+#	$OpenBSD: Makefile,v 1.37 2020/03/13 16:04:31 jsing Exp $
 
 SUBDIR += asn1
 SUBDIR += buffer
@@ -8,6 +8,7 @@ SUBDIR += ciphers
 SUBDIR += handshake
 SUBDIR += pqueue
 SUBDIR += record
+SUBDIR += record_layer
 SUBDIR += server
 SUBDIR += ssl
 SUBDIR += tlsext
diff --git a/regress/lib/libssl/record_layer/Makefile b/regress/lib/libssl/record_layer/Makefile
new file mode 100644
index 00000000000..66c48dd7694
--- /dev/null
+++ b/regress/lib/libssl/record_layer/Makefile
@@ -0,0 +1,10 @@
+#	$OpenBSD: Makefile,v 1.1 2020/03/13 16:04:31 jsing Exp $
+
+PROG=		record_layer_test
+LDADD=		${SSL_INT} -lcrypto
+DPADD=		${LIBSSL} ${LIBCRYPTO}
+WARNINGS=	Yes
+CFLAGS+=	-DLIBRESSL_INTERNAL -Wall -Wundef -Werror
+CFLAGS+=	-I${.CURDIR}/../../../../lib/libssl
+
+.include <bsd.regress.mk>
diff --git a/regress/lib/libssl/record_layer/record_layer_test.c b/regress/lib/libssl/record_layer/record_layer_test.c
new file mode 100644
index 00000000000..d59147112c4
--- /dev/null
+++ b/regress/lib/libssl/record_layer/record_layer_test.c
@@ -0,0 +1,123 @@
+/* $OpenBSD: record_layer_test.c,v 1.1 2020/03/13 16:04:31 jsing Exp $ */
+/*
+ * Copyright (c) 2019, 2020 Joel Sing <jsing@openbsd.org>
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR 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.
+ */
+
+#include <err.h>
+#include <string.h>
+
+#include "tls13_internal.h"
+#include "tls13_record.h"
+
+int tls13_record_layer_inc_seq_num(uint8_t *seq_num);
+
+static void
+hexdump(const unsigned char *buf, size_t len)
+{
+	size_t i;
+
+	for (i = 1; i <= len; i++)
+		fprintf(stderr, " 0x%02x,%s", buf[i - 1], i % 8 ? "" : "\n");
+	if (len % 8 != 0)
+		fprintf(stderr, "\n");
+}
+
+struct seq_num_test {
+	uint8_t seq_num[TLS13_RECORD_SEQ_NUM_LEN];
+	uint8_t want_num[TLS13_RECORD_SEQ_NUM_LEN];
+	int want;
+};
+
+struct seq_num_test seq_num_tests[] = {
+	{
+		.seq_num = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+		.want_num = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
+		.want = 1,
+	},
+	{
+		.seq_num = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01},
+		.want_num = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02},
+		.want = 1,
+	},
+	{
+		.seq_num = {0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+		.want_num = {0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+		.want = 1,
+	},
+	{
+		.seq_num = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe},
+		.want_num = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+		.want = 1,
+	},
+	{
+		.seq_num = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
+		.want_num = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
+		.want = 0,
+	},
+};
+
+#define N_SEQ_NUM_TESTS (sizeof(seq_num_tests) / sizeof(seq_num_tests[0]))
+
+static int
+do_seq_num_test(size_t test_no, struct seq_num_test *snt)
+{
+	uint8_t seq_num[TLS13_RECORD_SEQ_NUM_LEN];
+	int failed = 1;
+	int ret;
+
+	memcpy(seq_num, snt->seq_num, sizeof(seq_num));
+
+	if ((ret = tls13_record_layer_inc_seq_num(seq_num)) != snt->want) {
+		fprintf(stderr, "FAIL: Test %zu - got return %i, want %i\n",
+		    test_no, ret, snt->want);
+		goto failure;
+	}
+
+	if (memcmp(seq_num, snt->want_num, sizeof(seq_num)) != 0) {
+		fprintf(stderr, "FAIL: Test %zu - got sequence number:\n",
+		    test_no);
+		hexdump(seq_num, sizeof(seq_num));
+		fprintf(stderr, "want:\n");
+		hexdump(snt->want_num, sizeof(snt->want_num));
+		goto failure;
+	}
+
+	failed = 0;
+
+ failure:
+	return failed;
+}
+
+static int
+test_seq_num(void)
+{
+	int failed = 0;
+	size_t i;
+
+	for (i = 0; i < N_SEQ_NUM_TESTS; i++)
+		failed |= do_seq_num_test(i, &seq_num_tests[i]);
+
+	return failed;
+}
+
+int
+main(int argc, char **argv)
+{
+	int failed = 0;
+
+	failed |= test_seq_num();
+
+	return failed;
+}