Allow reordering of certificates when signing.

Add certificates if -nocerts and -certfile specified when signing
in smime application. This can be used this to specify the
order certificates appear in the PKCS#7 structure: some broken
applications require a certain ordering.

PR#3316

apps/smime.c

@@ -704,6 +704,14 @@ int MAIN(int argc, char **argv)
 			p7 = PKCS7_sign(NULL, NULL, other, in, flags);
 			if (!p7)
 				goto end;
+			if (flags & PKCS7_NOCERTS)
+				{
+				for (i = 0; i < sk_X509_num(other); i++)
+					{
+					X509 *x = sk_X509_value(other, i);
+					PKCS7_add_certificate(p7, x);
+					}
+				}
 			}
 		else
 			flags |= PKCS7_REUSE_DIGEST;