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# Copyright 2016 Cloudbase Solutions Srl
# All Rights Reserved
#
# 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.
"""Windows remote filesystem client utilities."""
import os
import re
import warnings
from os_win import utilsfactory
from oslo_log import log as logging
from os_brick import exception
from os_brick.i18n import _
from os_brick.remotefs import remotefs
LOG = logging.getLogger(__name__)
class WindowsRemoteFsClient(remotefs.RemoteFsClient):
_username_regex = re.compile(r'user(?:name)?=([^, ]+)')
_password_regex = re.compile(r'pass(?:word)?=([^, ]+)')
_loopback_share_map = {}
def __init__(self, mount_type, root_helper=None,
execute=None, *args, **kwargs):
warnings.warn('Support for Windows OS has been deprecated.',
category=DeprecationWarning, stacklevel=2)
mount_type_to_option_prefix = {
'cifs': 'smbfs',
'smbfs': 'smbfs',
}
self._local_path_for_loopback = kwargs.get('local_path_for_loopback',
True)
if mount_type not in mount_type_to_option_prefix:
raise exception.ProtocolNotSupported(protocol=mount_type)
self._mount_type = mount_type
option_prefix = mount_type_to_option_prefix[mount_type]
self._mount_base = kwargs.get(option_prefix + '_mount_point_base')
self._mount_options = kwargs.get(option_prefix + '_mount_options')
self._smbutils = utilsfactory.get_smbutils()
self._pathutils = utilsfactory.get_pathutils()
def get_local_share_path(self, share, expect_existing=True):
share = self._get_share_norm_path(share)
share_name = self.get_share_name(share)
share_subdir = self.get_share_subdir(share)
is_local_share = self._smbutils.is_local_share(share)
if not is_local_share:
LOG.debug("Share '%s' is not exposed by the current host.", share)
local_share_path = None
else:
local_share_path = self._smbutils.get_smb_share_path(share_name)
if not local_share_path and expect_existing:
err_msg = _("Could not find the local "
"share path for %(share)s.")
raise exception.VolumePathsNotFound(err_msg % dict(share=share))
if local_share_path and share_subdir:
local_share_path = os.path.join(local_share_path, share_subdir)
return local_share_path
def _get_share_norm_path(self, share):
return share.replace('/', '\\')
def get_share_name(self, share):
return self._get_share_norm_path(share).lstrip('\\').split('\\')[1]
def get_share_subdir(self, share):
return "\\".join(
self._get_share_norm_path(share).lstrip('\\').split('\\')[2:])
def mount(self, share, flags=None):
share_norm_path = self._get_share_norm_path(share)
use_local_path = (self._local_path_for_loopback and
self._smbutils.is_local_share(share_norm_path))
if use_local_path:
LOG.info("Skipping mounting local share %(share_path)s.",
dict(share_path=share_norm_path))
else:
mount_options = " ".join(
[self._mount_options or '', flags or ''])
username, password = self._parse_credentials(mount_options)
if not self._smbutils.check_smb_mapping(
share_norm_path):
self._smbutils.mount_smb_share(share_norm_path,
username=username,
password=password)
if self._mount_base:
self._create_mount_point(share, use_local_path)
def unmount(self, share):
self._smbutils.unmount_smb_share(self._get_share_norm_path(share))
def _create_mount_point(self, share, use_local_path):
# The mount point will contain a hash of the share so we're
# intentionally preserving the original share path as this is
# what the caller will expect.
mnt_point = self.get_mount_point(share)
share_norm_path = self._get_share_norm_path(share)
symlink_dest = (share_norm_path if not use_local_path
else self.get_local_share_path(share))
if not os.path.isdir(self._mount_base):
os.makedirs(self._mount_base)
if os.path.exists(mnt_point):
if not self._pathutils.is_symlink(mnt_point):
raise exception.BrickException(_("Link path already exists "
"and it's not a symlink"))
else:
self._pathutils.create_sym_link(mnt_point, symlink_dest)
def _parse_credentials(self, opts_str):
if not opts_str:
return None, None
match = self._username_regex.findall(opts_str)
username = match[0] if match and match[0] != 'guest' else None
match = self._password_regex.findall(opts_str)
password = match[0] if match else None
return username, password
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