Add support for forced password change

ThinkAgile CP storage BMC firmware now requires
a password change be navigated prior to operation.

confluent_server/confluent/discovery/handlers/cpstorage.py

@@ -13,9 +13,58 @@
 # limitations under the License.
 
 import confluent.discovery.handlers.bmc as bmchandler
+import eventlet
+import confluent.util as util
+try:
+    from urllib import urlencode
+except ImportError:
+    from urllib.parse import urlencode
+webclient = eventlet.import_patched('pyghmi.util.webclient')
 
 class NodeHandler(bmchandler.NodeHandler):
     DEFAULT_USER = 'admin'
     DEFAULT_PASS = 'admin'
     devname = 'BMC'
     maxmacs = 2
+
+    def validate_cert(self, certificate):
+        # broadly speaking, merely checks consistency moment to moment,
+        # but if https_cert gets stricter, this check means something
+        fprint = util.get_fingerprint(self.https_cert)
+        return util.cert_matches(fprint, certificate)
+
+    def get_webclient(self, user, passwd, newuser, newpass):
+        wc = webclient.SecureHTTPConnection(self.ipaddr, 443,
+                                            verifycallback=self.validate_cert)
+        wc.connect()
+        authdata = urlencode({'username': user, 'password': passwd,
+                              'weblogsign': 1})
+        res = wc.grab_json_response_with_status('/api/session', authdata)
+        if res[1] == 200:
+            if res[0].get('force_password', 1) == 0:
+                # Need to handle password change
+                passchange = {
+                    'Password': newpass,
+                    'RetypePassword': newpass,
+                    'param': 4,
+                    'username': 'admin',
+                    'privilege': 4,
+                }
+                passchange = urlencode(passchange)
+                rsp = wc.grab_json_response_with_status('/api/reset-pass',
+                                                        passchange)
+                rsp = wc.grab_json_response_with_status('/api/session',
+                                                        method='DELETE')
+
+    def config(self, nodename, reset=False):
+        self.nodename = nodename
+        creds = self.configmanager.get_node_attributes(
+            self.nodename, ['secret.hardwaremanagementuser',
+                            'secret.hardwaremanagementpassword'],
+            decrypt=True)
+        user, passwd, isdefault = self.get_node_credentials(
+                nodename, creds, 'admin', 'admin')
+        if not isdefault:
+            self.get_webclient(self.DEFAULT_USER, self.DEFAULT_PASS, user,
+                               passwd)
+        self._bmcconfig(nodename, False)