From be39b26f1f8f0427388ee6657755f16936ca35a5 Mon Sep 17 00:00:00 2001
From: tb <>
Date: Sat, 8 Jan 2022 21:36:39 +0000
Subject: Prepare to provide OBJ_length() and OBJ_get0_data()

OBJ_length() turns the int obj->length into a size_t, so add
an overflow check. While obj->length should never be negative,
who knows...

ok jsing
---
 src/lib/libcrypto/objects/obj_dat.c | 23 ++++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

(limited to 'src/lib/libcrypto/objects/obj_dat.c')

diff --git a/src/lib/libcrypto/objects/obj_dat.c b/src/lib/libcrypto/objects/obj_dat.c
index bcbc8cef85..4f7396f669 100644
--- a/src/lib/libcrypto/objects/obj_dat.c
+++ b/src/lib/libcrypto/objects/obj_dat.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: obj_dat.c,v 1.44 2022/01/07 11:13:54 tb Exp $ */
+/* $OpenBSD: obj_dat.c,v 1.45 2022/01/08 21:36:39 tb Exp $ */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *
@@ -816,3 +816,24 @@ OBJ_create(const char *oid, const char *sn, const char *ln)
 	free(buf);
 	return (ok);
 }
+
+size_t
+OBJ_length(const ASN1_OBJECT *obj)
+{
+	if (obj == NULL)
+		return 0;
+
+	if (obj->length < 0)
+		return 0;
+
+	return obj->length;
+}
+
+const unsigned char *
+OBJ_get0_data(const ASN1_OBJECT *obj)
+{
+	if (obj == NULL)
+		return NULL;
+
+	return obj->data;
+}
-- 
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