More S/MIME tidy. Place some common attribute operations in utility

functions.

1 files changed, 39 insertions, 0 deletions

diff --git a/crypto/pkcs7/pk7_attr.c b/crypto/pkcs7/pk7_attr.c
index 735c8800e1..5ad6670a4e 100644
--- a/crypto/pkcs7/pk7_attr.c
+++ b/crypto/pkcs7/pk7_attr.c
@@ -139,3 +139,42 @@ int PKCS7_simple_smimecap(STACK_OF(X509_ALGOR) *sk, int nid, int arg)
 	sk_X509_ALGOR_push (sk, alg);
 	return 1;
 }
+
+int PKCS7_add_attrib_content_type(PKCS7_SIGNER_INFO *si, ASN1_OBJECT *coid)
+	{
+	if (PKCS7_get_signed_attribute(si, NID_pkcs9_contentType))
+		return 0;
+	if (!coid)
+		coid = OBJ_nid2obj(NID_pkcs7_data);
+	return PKCS7_add_signed_attribute(si, NID_pkcs9_contentType,
+				V_ASN1_OBJECT, coid);
+	}
+
+int PKCS7_add0_attrib_signing_time(PKCS7_SIGNER_INFO *si, ASN1_TIME *t)
+	{
+	if (!t && !(t=X509_gmtime_adj(NULL,0)))
+		{
+		PKCS7err(PKCS7_F_PKCS7_ADD0_ATTRIB_SIGNING_TIME,
+				ERR_R_MALLOC_FAILURE);
+		return 0;
+		}
+	return PKCS7_add_signed_attribute(si, NID_pkcs9_signingTime,
+						V_ASN1_UTCTIME, t);
+	}
+
+int PKCS7_add1_attrib_digest(PKCS7_SIGNER_INFO *si,
+				const unsigned char *md, int mdlen)
+	{
+	ASN1_OCTET_STRING *os;
+	os = ASN1_OCTET_STRING_new();
+	if (!os)
+		return 0;
+	if (!ASN1_STRING_set(os, md, mdlen)
+		|| PKCS7_add_signed_attribute(si, NID_pkcs9_messageDigest,
+						V_ASN1_OCTET_STRING, os))
+		{
+		ASN1_OCTET_STRING_free(os);
+		return 0;
+		}
+	return 1;
+	}