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-rw-r--r--crypto/asn1/x_algor.c34
1 files changed, 33 insertions, 1 deletions
diff --git a/crypto/asn1/x_algor.c b/crypto/asn1/x_algor.c
index 4c4a718850ee..c9a8f1e9d1d4 100644
--- a/crypto/asn1/x_algor.c
+++ b/crypto/asn1/x_algor.c
@@ -1,5 +1,5 @@
/*
- * Copyright 1998-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 1998-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
@@ -92,3 +92,35 @@ int X509_ALGOR_cmp(const X509_ALGOR *a, const X509_ALGOR *b)
return 0;
return ASN1_TYPE_cmp(a->parameter, b->parameter);
}
+
+int X509_ALGOR_copy(X509_ALGOR *dest, const X509_ALGOR *src)
+{
+ if (src == NULL || dest == NULL)
+ return 0;
+
+ if (dest->algorithm)
+ ASN1_OBJECT_free(dest->algorithm);
+ dest->algorithm = NULL;
+
+ if (dest->parameter)
+ ASN1_TYPE_free(dest->parameter);
+ dest->parameter = NULL;
+
+ if (src->algorithm)
+ if ((dest->algorithm = OBJ_dup(src->algorithm)) == NULL)
+ return 0;
+
+ if (src->parameter) {
+ dest->parameter = ASN1_TYPE_new();
+ if (dest->parameter == NULL)
+ return 0;
+
+ /* Assuming this is also correct for a BOOL.
+ * set does copy as a side effect.
+ */
+ if (ASN1_TYPE_set1(dest->parameter,
+ src->parameter->type, src->parameter->value.ptr) == 0)
+ return 0;
+ }
+ return 1;
+}