Add configuration show command

Create a `configuration show` command that displays the current
configuration of the CLI.  Different configurations can be
displayed using options such as --os-cloud.  Passwords and
tokens are redacted by default unless the --unmask
option is specified.

Closes-Bug: #1476729

Change-Id: I0792365d0c5fa526cd09c0ed88c6bb1e2cb813a7

4 files changed, 153 insertions, 0 deletions

diff --git a/openstackclient/common/clientmanager.py b/openstackclient/common/clientmanager.py
index 742509e4..d8e7e1a9 100644
--- a/openstackclient/common/clientmanager.py
+++ b/openstackclient/common/clientmanager.py
@@ -15,6 +15,7 @@
 
 """Manage access to the clients, including authenticating when needed."""
 
+import copy
 import logging
 import pkg_resources
 import sys
@@ -203,6 +204,9 @@ class ClientManager(object):
                                               interface=interface)
         return endpoint
 
+    def get_configuration(self):
+        return copy.deepcopy(self._cli_options.config)
+
 
 # Plugin Support
 
diff --git a/openstackclient/common/configuration.py b/openstackclient/common/configuration.py
new file mode 100644
index 00000000..83df73e2
--- /dev/null
+++ b/openstackclient/common/configuration.py
@@ -0,0 +1,58 @@
+#   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.
+#
+
+"""Configuration action implementations"""
+
+import logging
+
+from cliff import show
+import six
+
+REDACTED = "<redacted>"
+
+
+class ShowConfiguration(show.ShowOne):
+    """Display configuration details"""
+
+    log = logging.getLogger(__name__ + '.ShowConfiguration')
+
+    def get_parser(self, prog_name):
+        parser = super(ShowConfiguration, self).get_parser(prog_name)
+        mask_group = parser.add_mutually_exclusive_group()
+        mask_group.add_argument(
+            "--mask",
+            dest="mask",
+            action="store_true",
+            default=True,
+            help="Attempt to mask passwords (default)",
+        )
+        mask_group.add_argument(
+            "--unmask",
+            dest="mask",
+            action="store_false",
+            help="Show password in clear text",
+        )
+        return parser
+
+    def take_action(self, parsed_args):
+        self.log.debug('take_action(%s)', parsed_args)
+
+        info = self.app.client_manager.get_configuration()
+        for key, value in six.iteritems(info.pop('auth', {})):
+            if parsed_args.mask:
+                if 'password' in key.lower():
+                    value = REDACTED
+                if 'token' in key.lower():
+                    value = REDACTED
+            info['auth.' + key] = value
+        return zip(*sorted(six.iteritems(info)))
diff --git a/openstackclient/tests/common/test_configuration.py b/openstackclient/tests/common/test_configuration.py
new file mode 100644
index 00000000..3b942533
--- /dev/null
+++ b/openstackclient/tests/common/test_configuration.py
@@ -0,0 +1,79 @@
+#   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.
+#
+
+from openstackclient.common import configuration
+from openstackclient.tests import fakes
+from openstackclient.tests import utils
+
+
+class TestConfiguration(utils.TestCommand):
+
+    def test_show(self):
+        arglist = []
+        verifylist = [('mask', True)]
+        cmd = configuration.ShowConfiguration(self.app, None)
+        parsed_args = self.check_parser(cmd, arglist, verifylist)
+
+        columns, data = cmd.take_action(parsed_args)
+
+        collist = ('auth.password', 'auth.token', 'auth.username',
+                   'identity_api_version', 'region')
+        self.assertEqual(collist, columns)
+        datalist = (
+            configuration.REDACTED,
+            configuration.REDACTED,
+            fakes.USERNAME,
+            fakes.VERSION,
+            fakes.REGION_NAME,
+        )
+        self.assertEqual(datalist, tuple(data))
+
+    def test_show_unmask(self):
+        arglist = ['--unmask']
+        verifylist = [('mask', False)]
+        cmd = configuration.ShowConfiguration(self.app, None)
+        parsed_args = self.check_parser(cmd, arglist, verifylist)
+
+        columns, data = cmd.take_action(parsed_args)
+
+        collist = ('auth.password', 'auth.token', 'auth.username',
+                   'identity_api_version', 'region')
+        self.assertEqual(collist, columns)
+        datalist = (
+            fakes.PASSWORD,
+            fakes.AUTH_TOKEN,
+            fakes.USERNAME,
+            fakes.VERSION,
+            fakes.REGION_NAME,
+        )
+        self.assertEqual(datalist, tuple(data))
+
+    def test_show_mask(self):
+        arglist = ['--mask']
+        verifylist = [('mask', True)]
+        cmd = configuration.ShowConfiguration(self.app, None)
+        parsed_args = self.check_parser(cmd, arglist, verifylist)
+
+        columns, data = cmd.take_action(parsed_args)
+
+        collist = ('auth.password', 'auth.token', 'auth.username',
+                   'identity_api_version', 'region')
+        self.assertEqual(collist, columns)
+        datalist = (
+            configuration.REDACTED,
+            configuration.REDACTED,
+            fakes.USERNAME,
+            fakes.VERSION,
+            fakes.REGION_NAME,
+        )
+        self.assertEqual(datalist, tuple(data))
diff --git a/openstackclient/tests/fakes.py b/openstackclient/tests/fakes.py
index ff69c190..979f9481 100644
--- a/openstackclient/tests/fakes.py
+++ b/openstackclient/tests/fakes.py
@@ -28,6 +28,7 @@ PASSWORD = "scratchy"
 PROJECT_NAME = "poochie"
 REGION_NAME = "richie"
 INTERFACE = "catchy"
+VERSION = "3"
 
 TEST_RESPONSE_DICT = fixture.V2Token(token_id=AUTH_TOKEN,
                                      user_name=USERNAME)
@@ -102,6 +103,17 @@ class FakeClientManager(object):
         self.auth_ref = None
         self.auth_plugin_name = None
 
+    def get_configuration(self):
+        return {
+            'auth': {
+                'username': USERNAME,
+                'password': PASSWORD,
+                'token': AUTH_TOKEN,
+            },
+            'region': REGION_NAME,
+            'identity_api_version': VERSION,
+        }
+
 
 class FakeModule(object):
     def __init__(self, name, version):