3 # Copyright (C) 2008-2013 W. Trevor King
4 # Copyright (C) 2012-2013 Wade Berrier
5 # Copyright (C) 2012 Niels de Vos
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation, either version 3 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 """LDAP address searches for Mutt.
22 Add :file:`mutt-ldap.py` to your ``PATH`` and add the following line
23 to your :file:`.muttrc`::
25 set query_command = "mutt-ldap.py '%s'"
27 Search for addresses with `^t`, optionally after typing part of the
28 name. Configure your connection by creating :file:`~/.mutt-ldap.rc`
29 contaning something like::
32 server = myserver.example.net
33 basedn = ou=people,dc=example,dc=net
35 See the `CONFIG` options for other available settings.
38 import ConfigParser as _configparser
39 import hashlib as _hashlib
41 import logging as _logging
42 import os.path as _os_path
43 import pickle as _pickle
47 import ldap.sasl as _ldap_sasl
53 LOG = _logging.getLogger('mutt-ldap')
54 LOG.addHandler(_logging.StreamHandler())
55 LOG.setLevel(_logging.ERROR)
57 CONFIG = _configparser.SafeConfigParser()
58 CONFIG.add_section('connection')
59 CONFIG.set('connection', 'server', 'domaincontroller.yourdomain.com')
60 CONFIG.set('connection', 'port', '389') # set to 636 for default over SSL
61 CONFIG.set('connection', 'ssl', 'no')
62 CONFIG.set('connection', 'starttls', 'no')
63 CONFIG.set('connection', 'basedn', 'ou=x co.,dc=example,dc=net')
64 CONFIG.add_section('auth')
65 CONFIG.set('auth', 'user', '')
66 CONFIG.set('auth', 'password', '')
67 CONFIG.set('auth', 'gssapi', 'no')
68 CONFIG.add_section('query')
69 CONFIG.set('query', 'filter', '') # only match entries according to this filter
70 CONFIG.set('query', 'search-fields', 'cn displayName uid mail') # fields to wildcard search
71 CONFIG.add_section('results')
72 CONFIG.set('results', 'optional-column', '') # mutt can display one optional column
73 CONFIG.add_section('cache')
74 CONFIG.set('cache', 'enable', 'yes') # enable caching by default
75 CONFIG.set('cache', 'path', '~/.mutt-ldap.cache') # cache results here
76 CONFIG.set('cache', 'fields', '') # fields to cache (if empty, setup in the main block)
77 CONFIG.set('cache', 'longevity-days', '14') # TODO: cache results for 14 days by default
78 CONFIG.add_section('system')
79 # HACK: Python 2.x support, see http://bugs.python.org/issue2128
80 CONFIG.set('system', 'argv-encoding', 'utf-8')
82 CONFIG.read(_os_path.expanduser('~/.mutt-ldap.rc'))
85 class LDAPConnection (object):
86 """Wrap an LDAP connection supporting the 'with' statement
88 See PEP 343 for details.
90 def __init__(self, config=None):
94 self.connection = None
100 def __exit__(self, type, value, traceback):
104 if self.connection is not None:
105 raise RuntimeError('already connected to the LDAP server')
107 if self.config.getboolean('connection', 'ssl'):
109 url = '{0}://{1}:{2}'.format(
111 self.config.get('connection', 'server'),
112 self.config.get('connection', 'port'))
113 LOG.info(u'connect to LDAP server at {0}'.format(url))
114 self.connection = _ldap.initialize(url)
115 if (self.config.getboolean('connection', 'starttls') and
117 self.connection.start_tls_s()
118 if self.config.getboolean('auth', 'gssapi'):
119 sasl = _ldap_sasl.gssapi()
120 self.connection.sasl_interactive_bind_s('', sasl)
122 self.connection.bind(
123 self.config.get('auth', 'user'),
124 self.config.get('auth', 'password'),
128 if self.connection is None:
129 raise RuntimeError('not connected to an LDAP server')
130 LOG.info(u'unbind from LDAP server')
131 self.connection.unbind()
132 self.connection = None
134 def search(self, query):
135 if self.connection is None:
136 raise RuntimeError('connect to the LDAP server before searching')
140 fields = self.config.get('query', 'search-fields').split()
141 filterstr = u'(|{0})'.format(
142 u' '.join([u'({0}=*{1}{2})'.format(field, query, post) for
144 query_filter = self.config.get('query', 'filter')
146 filterstr = u'(&({0}){1})'.format(query_filter, filterstr)
147 LOG.info(u'search for {0}'.format(filterstr))
148 msg_id = self.connection.search(
149 self.config.get('connection', 'basedn'),
151 filterstr.encode('utf-8'))
153 while res_type != _ldap.RES_SEARCH_RESULT:
155 res_type, res_data = self.connection.result(
156 msg_id, all=False, timeout=0)
157 except _ldap.ADMINLIMIT_EXCEEDED as e:
158 LOG.warn(u'could not handle query results: {0}'.format(e))
161 # use `yield from res_data` in Python >= 3.3, see PEP 380
162 for entry in res_data:
166 class CachedLDAPConnection (LDAPConnection):
167 _cache_version = '{0}.0'.format(__version__)
170 # delay LDAP connection until we actually need it
175 super(CachedLDAPConnection, self).unbind()
179 def search(self, query):
180 cache_hit, entries = self._cache_lookup(query=query)
182 LOG.info(u'return cached entries for {0}'.format(query))
183 # use `yield from res_data` in Python >= 3.3, see PEP 380
184 for entry in entries:
187 if self.connection is None:
188 super(CachedLDAPConnection, self).connect()
190 keys = self.config.get('cache', 'fields').split()
191 for entry in super(CachedLDAPConnection, self).search(query=query):
193 # use dict comprehensions in Python >= 2.7, see PEP 274
195 [(key, data[key]) for key in keys if key in data])
196 entries.append((cn, cached_data))
198 self._cache_store(query=query, entries=entries)
200 def _load_cache(self):
201 path = _os_path.expanduser(self.config.get('cache', 'path'))
202 LOG.info(u'load cache from {0}'.format(path))
205 data = _json.load(open(path, 'rb'))
206 except IOError as e: # probably "No such file"
207 LOG.warn(u'error reading cache: {0}'.format(e))
208 except (ValueError, KeyError) as e: # probably a corrupt cache file
209 LOG.warn(u'error parsing cache: {0}'.format(e))
211 version = data.get('version', None)
212 if version == self._cache_version:
213 self._cache = data.get('queries', {})
215 LOG.debug(u'drop outdated local cache {0} != {1}'.format(
216 version, self._cache_version))
219 def _save_cache(self):
220 path = _os_path.expanduser(self.config.get('cache', 'path'))
221 LOG.info(u'save cache to {0}'.format(path))
223 'queries': self._cache,
224 'version': self._cache_version,
226 with open(path, 'wb') as f:
227 _json.dump(data, f, indent=2, separators=(',', ': '))
228 f.write('\n'.encode('utf-8'))
230 def _cache_store(self, query, entries):
231 self._cache[self._cache_key(query=query)] = {
233 'time': _time.time(),
236 def _cache_lookup(self, query):
237 data = self._cache.get(self._cache_key(query=query), None)
240 return (True, data['entries'])
242 def _cache_key(self, query):
243 return str((self._config_id(), query))
245 def _config_id(self):
246 """Return a unique ID representing the current configuration
248 config_string = _pickle.dumps(self.config)
249 return _hashlib.sha1(config_string).hexdigest()
251 def _cull_cache(self):
252 cull_days = self.config.getint('cache', 'longevity-days')
253 day_seconds = 24*60*60
254 expire = _time.time() - cull_days * day_seconds
255 for key in list(self._cache.keys()): # cull the cache
256 if self._cache[key]['time'] < expire:
257 LOG.debug('cull entry from cache: {0}'.format(key))
261 def _decode_query_data(obj):
262 if isinstance(obj, unicode): # e.g. cached JSON data
264 return unicode(obj, 'utf-8')
266 def format_columns(address, data):
267 yield _decode_query_data(address)
268 yield _decode_query_data(data.get('displayName', data['cn'])[-1])
269 optional_column = CONFIG.get('results', 'optional-column')
270 if optional_column in data:
271 yield _decode_query_data(data[optional_column][-1])
273 def format_entry(entry):
276 for m in data['mail']:
277 # http://www.mutt.org/doc/manual/manual-4.html#ss4.5
278 # Describes the format mutt expects: address\tname
279 yield u'\t'.join(format_columns(m, data))
282 if __name__ == '__main__':
285 # HACK: convert sys.argv to Unicode (not needed in Python 3)
286 argv_encoding = CONFIG.get('system', 'argv-encoding')
287 sys.argv = [unicode(arg, argv_encoding) for arg in sys.argv]
289 if len(sys.argv) < 2:
290 sys.stderr.write(u'{0}: no search string given\n'.format(sys.argv[0]))
293 query = u' '.join(sys.argv[1:])
295 if CONFIG.getboolean('cache', 'enable'):
296 connection_class = CachedLDAPConnection
297 if not CONFIG.get('cache', 'fields'):
298 # setup a reasonable default
299 fields = ['mail', 'cn', 'displayName'] # used by format_entry()
300 optional_column = CONFIG.get('results', 'optional-column')
302 fields.append(optional_column)
303 CONFIG.set('cache', 'fields', ' '.join(fields))
305 connection_class = LDAPConnection
308 with connection_class() as connection:
309 entries = connection.search(query=query)
310 for entry in entries:
311 addresses.extend(format_entry(entry))
312 print(u'{0} addresses found:'.format(len(addresses)))
313 print(u'\n'.join(addresses))