From 552609114c6e8aa9ad6a6faf19b2e9f112af8641 Mon Sep 17 00:00:00 2001
From: Jarrod Johnson <jjohnson2@lenovo.com>
Date: Wed, 29 Aug 2018 14:46:57 -0400
Subject: [PATCH] Add method to clear system configuration

Reset to factory defaults is a relatively common request, provide
an extensible hook.  Use the standard redfish method on current systems.

Change-Id: I92a17a7434eeab0d8f455cf609ca2db764fe4a17
---
 pyghmi/ipmi/command.py            | 8 ++++++++
 pyghmi/ipmi/oem/generic.py        | 4 ++++
 pyghmi/ipmi/oem/lenovo/handler.py | 5 +++++
 pyghmi/ipmi/oem/lenovo/imm.py     | 9 +++++++++
 pyghmi/util/webclient.py          | 7 ++++---
 5 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/pyghmi/ipmi/command.py b/pyghmi/ipmi/command.py
index 8a408939..b1565eff 100644
--- a/pyghmi/ipmi/command.py
+++ b/pyghmi/ipmi/command.py
@@ -761,6 +761,14 @@ class Command(object):
         self.oem_init()
         return self._oem.set_system_configuration(changeset)
 
+    def clear_system_configuration(self):
+        """Clear the Bios/UEFI configuration
+
+        This requests the system revert to factory default settings
+        """
+        self.oem_init()
+        self._oem.clear_system_configuration()
+
     def set_net_configuration(self, ipv4_address=None, ipv4_configuration=None,
                               ipv4_gateway=None, channel=None):
         """Set network configuration data.
diff --git a/pyghmi/ipmi/oem/generic.py b/pyghmi/ipmi/oem/generic.py
index 7fec0901..a0dc3dce 100644
--- a/pyghmi/ipmi/oem/generic.py
+++ b/pyghmi/ipmi/oem/generic.py
@@ -56,6 +56,10 @@ class OEMHandler(object):
         if evdata[0] & 0b110000 == 0b100000:
             event['oem_byte3'] = evdata[2]
 
+    def clear_system_configuration(self):
+        raise exc.UnsupportedFunctionality(
+            'Clearing system configuration not implemented for this platform')
+
     def get_oem_inventory_descriptions(self):
         """Get descriptions of available additional inventory items
 
diff --git a/pyghmi/ipmi/oem/lenovo/handler.py b/pyghmi/ipmi/oem/lenovo/handler.py
index 86a9c938..57b64747 100755
--- a/pyghmi/ipmi/oem/lenovo/handler.py
+++ b/pyghmi/ipmi/oem/lenovo/handler.py
@@ -933,6 +933,11 @@ class OEMHandler(generic.OEMHandler):
             return self.immhandler.set_system_configuration(changeset)
         return super(OEMHandler, self).set_system_configuration(changeset)
 
+    def clear_system_configuration(self):
+        if self.has_xcc:
+            return self.immhandler.clear_system_configuration()
+        return super(OEMHandler, self).clear_system_configuration()
+
     def detach_remote_media(self):
         if self.has_imm:
             self.immhandler.detach_remote_media()
diff --git a/pyghmi/ipmi/oem/lenovo/imm.py b/pyghmi/ipmi/oem/lenovo/imm.py
index 6fcda973..90d1b16f 100644
--- a/pyghmi/ipmi/oem/lenovo/imm.py
+++ b/pyghmi/ipmi/oem/lenovo/imm.py
@@ -14,6 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import base64
 from datetime import datetime
 import errno
 import json
@@ -685,6 +686,14 @@ class XCCClient(IMMClient):
         dsc = dsc[0]
         return {'height': int(dsc['u-height']), 'slot': int(dsc['slot'])}
 
+    def clear_system_configuration(self):
+        self.wc.grab_json_response(
+            '/redfish/v1/Systems/1/Bios/Actions/Bios.ResetBios',
+            {'Action': 'Bios.ResetBios'},
+            headers={'Authorization': 'Basic ' + base64.b64encode(
+                self.username + ':' + self.password),
+                     'Content-Type': 'application/json'})
+
     def get_webclient(self, login=True):
         cv = self.ipmicmd.certverify
         wc = webclient.SecureHTTPConnection(self.imm, 443, verifycallback=cv)
diff --git a/pyghmi/util/webclient.py b/pyghmi/util/webclient.py
index e9829e19..18ddb83b 100644
--- a/pyghmi/util/webclient.py
+++ b/pyghmi/util/webclient.py
@@ -151,14 +151,15 @@ class SecureHTTPConnection(httplib.HTTPConnection, object):
             raise
         return rsp
 
-    def grab_json_response(self, url, data=None, referer=None):
+    def grab_json_response(self, url, data=None, referer=None, headers=None):
         webclient = self.dupe()
         if isinstance(data, dict):
             data = json.dumps(data)
         if data:
-            webclient.request('POST', url, data, referer=referer)
+            webclient.request('POST', url, data, referer=referer,
+                              headers=headers)
         else:
-            webclient.request('GET', url, referer=referer)
+            webclient.request('GET', url, referer=referer, headers=headers)
         rsp = webclient.getresponse()
         if rsp.status == 200:
             return json.loads(rsp.read())