/usr/lib/python2.7/dist-packages/nss_cache/sources/source.py is in nsscache 0.33-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 | # Copyright 2007 Google Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""Base class of data source object for nss_cache."""
__author__ = ('jaq@google.com (Jamie Wilkinson)',
'vasilios@google.com (Vasilios Hoffman)')
import logging
from nss_cache import config
from nss_cache import error
class Source(object):
"""Abstract base class for map data sources."""
def __init__(self, conf):
"""Initialise the Source object.
Args:
conf: A dictionary of key/value pairs.
Raises:
RuntimeError: object wasn't initialised with a dict
"""
if not isinstance(conf, dict):
raise RuntimeError('Source constructor not passed a dictionary')
self.conf = conf
# create a logger for our children
self.log = logging.getLogger(self.__class__.__name__)
def GetMap(self, map_name, since=None, location=None):
"""Get a specific map from this source.
Args:
map_name: A string representation of the map you want
since: optional timestamp for incremental query
location: optional field used by automounts to indicate a specific map
Returns:
A Map child class for the map requested.
Raises:
UnsupportedMap: for unknown source maps
"""
if map_name == config.MAP_PASSWORD:
return self.GetPasswdMap(since)
elif map_name == config.MAP_SSHKEY:
return self.GetSshkeyMap(since)
elif map_name == config.MAP_GROUP:
return self.GetGroupMap(since)
elif map_name == config.MAP_SHADOW:
return self.GetShadowMap(since)
elif map_name == config.MAP_NETGROUP:
return self.GetNetgroupMap(since)
elif map_name == config.MAP_AUTOMOUNT:
return self.GetAutomountMap(since, location=location)
raise error.UnsupportedMap('Source can not fetch %s' % map_name)
def GetAutomountMap(self, since=None, location=None):
"""Get an automount map from this source."""
raise NotImplementedError
def GetAutomountMasterMap(self):
"""Get an automount map from this source."""
raise NotImplementedError
def Verify(self):
"""Perform verification of the source availability.
Attempt to open/connect or otherwise use the data source, and report if
there are any problems.
"""
raise NotImplementedError
class FileSource(object):
"""Abstract base class for file data sources."""
def __init__(self, conf):
"""Initialise the Source object.
Args:
conf: A dictionary of key/value pairs.
Raises:
RuntimeError: object wasn't initialised with a dict
"""
if not isinstance(conf, dict):
raise RuntimeError('Source constructor not passed a dictionary')
self.conf = conf
# create a logger for our children
self.log = logging.getLogger(self.__class__.__name__)
def GetFile(self, map_name, dst_file, current_file, location=None):
"""Retrieve a file from this source.
Args:
map_name: A string representation of the map whose file you want
dst_file: Temporary filename to write to.
current_file: Path to the current cache.
location: optional field used by automounts to indicate a specific map
Returns:
path to new file
Raises:
UnsupportedMap: for unknown source maps
"""
if map_name == config.MAP_PASSWORD:
return self.GetPasswdFile(dst_file, current_file)
elif map_name == config.MAP_GROUP:
return self.GetGroupFile(dst_file, current_file)
elif map_name == config.MAP_SHADOW:
return self.GetShadowFile(dst_file, current_file)
elif map_name == config.MAP_NETGROUP:
return self.GetNetgroupFile(dst_file, current_file)
elif map_name == config.MAP_AUTOMOUNT:
return self.GetAutomountFile(dst_file, current_file, location=location)
raise error.UnsupportedMap('Source can not fetch %s' % map_name)
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