Remove keyring support from openstackclient

* The encryption it purports to offer is completely insecure.
* It also appears to be broken.

Closes-Bug: #1319381
Change-Id: Id15ecfbbfd15f142b14c125bfd85afd5032699ac

5 files changed, 1 insertions, 116 deletions

diff --git a/README.rst b/README.rst
index 6da3d6a5..c892df1c 100644
--- a/README.rst
+++ b/README.rst
@@ -79,7 +79,6 @@ The 'password flow' variation is most commonly used::
    export OS_PROJECT_NAME=<project-name>
    export OS_USERNAME=<user-name>
    export OS_PASSWORD=<password>  # (optional)
-   export OS_USE_KEYRING=true  # (optional)
 
 The corresponding command-line options look very similar::
 
@@ -87,12 +86,9 @@ The corresponding command-line options look very similar::
    --os-project-name <project-name>
    --os-username <user-name>
    [--os-password <password>]
-   [--os-use-keyring]
 
 If a password is not provided above (in plaintext), you will be interactively
-prompted to provide one securely. If keyring is enabled, the password entered
-in the prompt is stored in keyring. From next time, the password is read from
-keyring, if it is not provided above (in plaintext).
+prompted to provide one securely.
 
 The token flow variation for authentication uses an already-acquired token
 and a URL pointing directly to the service API that presumably was acquired
diff --git a/doc/source/man/openstack.rst b/doc/source/man/openstack.rst
index 16f0bc47..6c49ba38 100644
--- a/doc/source/man/openstack.rst
+++ b/doc/source/man/openstack.rst
@@ -68,9 +68,6 @@ OPTIONS
 :option:`--os-default-domain` <auth-domain>
     Default domain ID (Default: 'default')
 
-:option:`--os-use-keyring`
-    Use keyring to store password (default: False)
-
 :option:`--os-cacert` <ca-bundle-file>
     CA certificate bundle file
 
@@ -175,9 +172,6 @@ The following environment variables can be set to alter the behaviour of :progra
 :envvar:`OS_DEFAULT_DOMAIN`
     Default domain ID (Default: ‘default’)
 
-:envvar:`OS_USE_KEYRING`
-    Use keyring to store password (default: False)
-
 :envvar:`OS_CACERT`
     CA certificate bundle file
 
diff --git a/openstackclient/common/openstackkeyring.py b/openstackclient/common/openstackkeyring.py
deleted file mode 100644
index 30450e80..00000000
--- a/openstackclient/common/openstackkeyring.py
+++ /dev/null
@@ -1,60 +0,0 @@
-#   Copyright 2011-2013 OpenStack, LLC.
-#
-#   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.
-#
-
-"""Keyring backend for OpenStack, to store encrypted password in a file."""
-
-from Crypto.Cipher import AES
-
-import keyring
-import os
-
-
-KEYRING_FILE = os.path.join(os.path.expanduser('~'), '.openstack-keyring.cfg')
-
-
-class OpenStackKeyring(keyring.backends.file.BaseKeyring):
-    """OpenStack Keyring to store encrypted password."""
-    filename = KEYRING_FILE
-
-    def supported(self):
-        """Applicable for all platforms, but not recommend."""
-        pass
-
-    def _init_crypter(self):
-        """Initialize the crypter using the class name."""
-        block_size = 32
-        padding = '0'
-
-        # init the cipher with the class name, up to block_size
-        password = __name__[block_size:]
-        password = password + (block_size - len(password) %
-                               block_size) * padding
-        return AES.new(password, AES.MODE_CFB)
-
-    def encrypt(self, password):
-        """Encrypt the given password."""
-        crypter = self._init_crypter()
-        return crypter.encrypt(password)
-
-    def decrypt(self, password_encrypted):
-        """Decrypt the given password."""
-        crypter = self._init_crypter()
-        return crypter.decrypt(password_encrypted)
-
-
-def os_keyring():
-    """Initialize the openstack keyring."""
-    ring = 'openstackclient.common.openstackkeyring.OpenStackKeyring'
-    return keyring.core.load_keyring(None, ring)
diff --git a/openstackclient/shell.py b/openstackclient/shell.py
index 6aae1a68..e4f3b92e 100644
--- a/openstackclient/shell.py
+++ b/openstackclient/shell.py
@@ -31,7 +31,6 @@ import openstackclient
 from openstackclient.common import clientmanager
 from openstackclient.common import commandmanager
 from openstackclient.common import exceptions as exc
-from openstackclient.common import openstackkeyring
 from openstackclient.common import restapi
 from openstackclient.common import utils
 from openstackclient.identity import client as identity_client
@@ -305,18 +304,6 @@ class OpenStackShell(app.App):
             default=env('OS_URL'),
             help='Defaults to env[OS_URL]')
 
-        env_os_keyring = env('OS_USE_KEYRING', default=False)
-        if type(env_os_keyring) == str:
-            if env_os_keyring.lower() in ['true', '1']:
-                env_os_keyring = True
-            else:
-                env_os_keyring = False
-        parser.add_argument('--os-use-keyring',
-                            default=env_os_keyring,
-                            action='store_true',
-                            help='Use keyring to store password, '
-                                 'default=False (Env: OS_USE_KEYRING)')
-
         parser.add_argument(
             '--os-identity-api-version',
             metavar='<identity-api-version>',
@@ -352,14 +339,12 @@ class OpenStackShell(app.App):
                     "You must provide a username via"
                     " either --os-username or env[OS_USERNAME]")
 
-            self.get_password_from_keyring()
             if not self.options.os_password:
                 # No password, if we've got a tty, try prompting for it
                 if hasattr(sys.stdin, 'isatty') and sys.stdin.isatty():
                     # Check for Ctl-D
                     try:
                         self.options.os_password = getpass.getpass()
-                        self.set_password_in_keyring()
                     except EOFError:
                         pass
                 # No password because we did't have a tty or the
@@ -406,34 +391,6 @@ class OpenStackShell(app.App):
         )
         return
 
-    def init_keyring_backend(self):
-        """Initialize openstack backend to use for keyring"""
-        return openstackkeyring.os_keyring()
-
-    def get_password_from_keyring(self):
-        """Get password from keyring, if it's set"""
-        if self.options.os_use_keyring:
-            service = KEYRING_SERVICE
-            backend = self.init_keyring_backend()
-            if not self.options.os_password:
-                password = backend.get_password(service,
-                                                self.options.os_username)
-                self.options.os_password = password
-
-    def set_password_in_keyring(self):
-        """Set password in keyring for this user"""
-        if self.options.os_use_keyring:
-            service = KEYRING_SERVICE
-            backend = self.init_keyring_backend()
-            if self.options.os_password:
-                password = backend.get_password(service,
-                                                self.options.os_username)
-                # either password is not set in keyring, or it is different
-                if password != self.options.os_password:
-                    backend.set_password(service,
-                                         self.options.os_username,
-                                         self.options.os_password)
-
     def initialize_app(self, argv):
         """Global app init bits:
 
diff --git a/requirements.txt b/requirements.txt
index 0112cde2..51715d1d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,5 @@
 pbr>=0.6,!=0.7,<1.0
 cliff>=1.6.0
-keyring>=2.1
-pycrypto>=2.6
 python-glanceclient>=0.13.1
 python-keystoneclient>=0.9.0
 python-novaclient>=2.17.0