Add setter equivalents to X509_REQ_get0_signature

Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10563)

2 files changed, 40 insertions, 0 deletions

diff --git a/crypto/asn1/x_algor.c b/crypto/asn1/x_algor.c
index 94c2aa3a2b..52558d80c7 100644
--- a/crypto/asn1/x_algor.c
+++ b/crypto/asn1/x_algor.c
@@ -92,3 +92,31 @@ 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)
+        /* 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;
+}
diff --git a/crypto/x509/x509_req.c b/crypto/x509/x509_req.c
index 9382f37a8a..9e846d5948 100644
--- a/crypto/x509/x509_req.c
+++ b/crypto/x509/x509_req.c
@@ -286,6 +286,18 @@ void X509_REQ_get0_signature(const X509_REQ *req, const ASN1_BIT_STRING **psig,
         *palg = &req->sig_alg;
 }
 
+void X509_REQ_set0_signature(X509_REQ *req, ASN1_BIT_STRING *psig)
+{
+    if (req->signature)
+           ASN1_BIT_STRING_free(req->signature);
+    req->signature = psig;
+}
+
+int X509_REQ_set1_signature_algo(X509_REQ *req, X509_ALGOR *palg)
+{
+    return X509_ALGOR_copy(&req->sig_alg, palg);
+}
+
 int X509_REQ_get_signature_nid(const X509_REQ *req)
 {
     return OBJ_obj2nid(req->sig_alg.algorithm);