Add regress coverage for i2d_ASN1_OBJECT() fixes

1 files changed, 27 insertions, 3 deletions

diff --git a/src/regress/lib/libcrypto/asn1/asn1object.c b/src/regress/lib/libcrypto/asn1/asn1object.c
index 539c6aa950..56382a4edc 100644
--- a/src/regress/lib/libcrypto/asn1/asn1object.c
+++ b/src/regress/lib/libcrypto/asn1/asn1object.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: asn1object.c,v 1.10 2022/11/26 16:08:56 tb Exp $ */
+/* $OpenBSD: asn1object.c,v 1.11 2024/05/29 16:19:50 tb Exp $ */
 /*
  * Copyright (c) 2017, 2021, 2022 Joel Sing <jsing@openbsd.org>
  *
@@ -25,9 +25,14 @@
 #include "asn1_local.h"
 
 static void
-hexdump(const unsigned char *buf, size_t len)
+hexdump(const unsigned char *buf, int len)
 {
-        size_t i;
+        int i;
+
+        if (len <= 0) {
+                fprintf(stderr, "<negative length %d>\n", len);
+                return;
+        }
 
         for (i = 1; i <= len; i++)
                 fprintf(stderr, " 0x%02hhx,%s", buf[i - 1], i % 8 ? "" : "\n");
@@ -223,6 +228,7 @@ do_asn1_object_test(struct asn1_object_test *aot)
         ASN1_OBJECT *aobj = NULL;
         uint8_t buf[1024];
         const uint8_t *p;
+        uint8_t *der = NULL;
         uint8_t *q;
         int err, ret;
         int failed = 1;
@@ -268,6 +274,15 @@ do_asn1_object_test(struct asn1_object_test *aot)
             aot->der_len))
                 goto failed;
 
+        der = NULL;
+        ret = i2d_ASN1_OBJECT(aobj, &der);
+        if (!asn1_compare_bytes("ASN1_OBJECT DER", der, ret, aot->der,
+            aot->der_len))
+                goto failed;
+
+        free(der);
+        der = NULL;
+
         ASN1_OBJECT_free(aobj);
         aobj = NULL;
 
@@ -300,6 +315,7 @@ do_asn1_object_test(struct asn1_object_test *aot)
 
  failed:
         ASN1_OBJECT_free(aobj);
+        free(der);
 
         return failed;
 }
@@ -455,6 +471,7 @@ asn1_object_large_oid_test(void)
         ASN1_OBJECT *aobj = NULL;
         uint8_t buf[1024];
         const uint8_t *p;
+        uint8_t *der = NULL;
         uint8_t *q;
         int ret;
         int failed = 1;
@@ -475,8 +492,15 @@ asn1_object_large_oid_test(void)
             sizeof(asn1_large_oid_der)))
                 goto failed;
 
+        der = NULL;
+        ret = i2d_ASN1_OBJECT(aobj, &der);
+        if (!asn1_compare_bytes("ASN1_OBJECT DER", der, ret, asn1_large_oid_der,
+            sizeof(asn1_large_oid_der)))
+                goto failed;
+
  failed:
         ASN1_OBJECT_free(aobj);
+        free(der);
 
         return failed;
 }