Replace EVP_MAC_CTX_copy() by EVP_MAC_CTX_dup()

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
GH: #7651

1 files changed, 17 insertions, 7 deletions

diff --git a/crypto/evp/mac_lib.c b/crypto/evp/mac_lib.c
index 39efff0842..d11fae099c 100644
--- a/crypto/evp/mac_lib.c
+++ b/crypto/evp/mac_lib.c
@@ -48,18 +48,28 @@ void EVP_MAC_CTX_free(EVP_MAC_CTX *ctx)
     OPENSSL_free(ctx);
 }
 
-int EVP_MAC_CTX_copy(EVP_MAC_CTX *dst, const EVP_MAC_CTX *src)
+EVP_MAC_CTX *EVP_MAC_CTX_dup(const EVP_MAC_CTX *src)
 {
-    EVP_MAC_IMPL *macdata;
+    EVP_MAC_CTX *dst = EVP_MAC_CTX_new(src->meth);
 
-    if (src->data != NULL && !dst->meth->copy(dst->data, src->data))
-        return 0;
+    if (dst == NULL)
+        return NULL;
+
+    dst = OPENSSL_malloc(sizeof(*dst));
+    if (dst == NULL) {
+        EVPerr(EVP_F_EVP_MAC_CTX_DUP, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
 
-    macdata = dst->data;
     *dst = *src;
-    dst->data = macdata;
 
-    return 1;
+    dst->data = src->meth->dup(src->data);
+    if (dst->data == NULL) {
+        EVP_MAC_CTX_free(dst);
+        return NULL;
+    }
+
+    return dst;
 }
 
 const EVP_MAC *EVP_MAC_CTX_mac(EVP_MAC_CTX *ctx)