Add first user layer support.

Exposes user layer library which will be used by both
apphandler and netipmid for RAKP. Password is decrypted
from the special file which is used by pam-ipmi.

Change-Id: Ia6b99d4359a03843f19cd0e18f7269ad2e3cdb44
Signed-off-by: Richard Marian Thomaiyar <richard.marian.thomaiyar@linux.intel.com>
diff --git a/user_channel/user_layer.hpp b/user_channel/user_layer.hpp
new file mode 100644
index 0000000..b797007
--- /dev/null
+++ b/user_channel/user_layer.hpp
@@ -0,0 +1,33 @@
+/*
+// Copyright (c) 2018 Intel Corporation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+*/
+#pragma once
+#include <host-ipmid/ipmid-api.h>
+
+#include <string>
+
+namespace ipmi
+{
+/** @brief The ipmi get user password layer call
+ *
+ *  @param[in] userName
+ *
+ *  @return password or empty string
+ */
+std::string ipmiUserGetPassword(const std::string& userName);
+
+// TODO: Define required user layer API Call's which user layer shared library
+// must implement.
+} // namespace ipmi