RedfishPkg/RedfishCredentialDxe: EDKII Redfish Credential DXE driver

EDKII Redfish Credential DXE driver which abstracts platform Redfish
credential implementation.

Signed-off-by: Jiaxin Wu <jiaxin.wu@intel.com>
Signed-off-by: Ting Ye <ting.ye@intel.com>
Signed-off-by: Siyuan Fu <siyuan.fu@intel.com>
Signed-off-by: Fan Wang <fan.wang@intel.com>
Signed-off-by: Abner Chang <abner.chang@hpe.com>

Cc: Nickle Wang <nickle.wang@hpe.com>
Cc: Peter O'Hanley <peter.ohanley@hpe.com>
Reviewed-by: Nickle Wang <nickle.wang@hpe.com>

RedfishPkg/Library/PlatformCredentialLibNull/PlatformCredentialLibNull.c

@@ -0,0 +1,101 @@
+/** @file
+  NULL instace of RedfishPlatformCredentialLib
+
+  (C) Copyright 2020 Hewlett Packard Enterprise Development LP<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#include <Uefi.h>
+#include <Protocol/EdkIIRedfishCredential.h>
+/**
+  Notification of Exit Boot Service.
+
+  @param[in]  This    Pointer to EDKII_REDFISH_CREDENTIAL_PROTOCOL.
+**/
+VOID
+EFIAPI
+LibCredentialExitBootServicesNotify (
+  IN  EDKII_REDFISH_CREDENTIAL_PROTOCOL  *This
+)
+{
+  return;
+}
+
+/**
+  Notification of End of DXe.
+
+  @param[in]  This    Pointer to EDKII_REDFISH_CREDENTIAL_PROTOCOL.
+**/
+VOID
+EFIAPI
+LibCredentialEndOfDxeNotify (
+  IN  EDKII_REDFISH_CREDENTIAL_PROTOCOL  *This
+)
+{
+  return;
+}
+
+/**
+  Retrieve platform's Redfish authentication information.
+
+  This functions returns the Redfish authentication method together with the user Id and
+  password.
+  - For AuthMethodNone, the UserId and Password could be used for HTTP header authentication
+    as defined by RFC7235.
+  - For AuthMethodRedfishSession, the UserId and Password could be used for Redfish
+    session login as defined by  Redfish API specification (DSP0266).
+
+  Callers are responsible for and freeing the returned string storage.
+
+  @param[in]   This                Pointer to EDKII_REDFISH_CREDENTIAL_PROTOCOL instance.
+  @param[out]  AuthMethod          Type of Redfish authentication method.
+  @param[out]  UserId              The pointer to store the returned UserId string.
+  @param[out]  Password            The pointer to store the returned Password string.
+
+  @retval EFI_SUCCESS              Get the authentication information successfully.
+  @retval EFI_ACCESS_DENIED        SecureBoot is disabled after EndOfDxe.
+  @retval EFI_INVALID_PARAMETER    This or AuthMethod or UserId or Password is NULL.
+  @retval EFI_OUT_OF_RESOURCES     There are not enough memory resources.
+  @retval EFI_UNSUPPORTED          Unsupported authentication method is found.
+
+**/
+EFI_STATUS
+EFIAPI
+LibCredentialGetAuthInfo (
+  IN  EDKII_REDFISH_CREDENTIAL_PROTOCOL  *This,
+  OUT EDKII_REDFISH_AUTH_METHOD          *AuthMethod,
+  OUT CHAR8                              **UserId,
+  OUT CHAR8                              **Password
+)
+{
+  return EFI_UNSUPPORTED;
+}
+
+/**
+  Notify the Redfish service provide to stop provide configuration service to this platform.
+
+  This function should be called when the platfrom is about to leave the safe environment.
+  It will notify the Redfish service provider to abort all logined session, and prohibit
+  further login with original auth info. GetAuthInfo() will return EFI_UNSUPPORTED once this
+  function is returned.
+
+  @param[in]   This                Pointer to EDKII_REDFISH_CREDENTIAL_PROTOCOL instance.
+  @param[in]   ServiceStopType     Reason of stopping Redfish service.
+
+  @retval EFI_SUCCESS              Service has been stoped successfully.
+  @retval EFI_INVALID_PARAMETER    This is NULL or given the worng ServiceStopType.
+  @retval EFI_UNSUPPORTED          Not support to stop Redfish service.
+  @retval Others                   Some error happened.
+
+**/
+EFI_STATUS
+EFIAPI
+LibStopRedfishService (
+  IN     EDKII_REDFISH_CREDENTIAL_PROTOCOL    *This,
+  IN     EDKII_REDFISH_CREDENTIAL_STOP_SERVICE_TYPE ServiceStopType
+  )
+{
+  return EFI_UNSUPPORTED;
+}
+