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- Committer: Björn Påhlsson
- Date: 2008-07-30 02:11:33 UTC
- mto: (24.1.154 mandos) (237.4.3 mandos-release)
- mto: This revision was merged to the branch mainline in revision 30.
- Revision ID: belorn@braxen-20080730021133-q341llq93r328q5b
Added optional parameters certdir, certkey and certfile that can be iven at start in the command line.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- clients.conf => mandos-clients.conf
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos => server.py
- files modified:
- Makefile
added
removed
server.py
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# This program is partly derived from an example program for an Avahi
7
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# service publisher, downloaded from
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# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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# methods "add" and "remove" in the "AvahiService" class, the
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# "server_state_changed" and "entry_group_state_changed" functions,
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# and some lines in "main".
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# following functions: "add_service", "remove_service",
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# "server_state_changed", "entry_group_state_changed", and some lines
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# in "main".
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#
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# Everything else is
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# Copyright © 2008 Teddy Hogeborn
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# Copyright © 2008 Björn Påhlsson
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# Everything else is Copyright © 2007-2008 Teddy Hogeborn and Björn
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# Påhlsson.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# Contact the authors at <mandos@fukt.bsnet.se>.
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# Contact the authors at <https://www.fukt.bsnet.se/~belorn/> and
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# <https://www.fukt.bsnet.se/~teddy/>.
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#
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from __future__ import division, with_statement, absolute_import
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from __future__ import division
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import SocketServer
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import socket
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import select
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from optparse import OptionParser
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import datetime
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import errno
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import stat
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import logging
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import logging.handlers
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import pwd
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from contextlib import closing
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import dbus
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import dbus.service
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import gobject
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import avahi
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from dbus.mainloop.glib import DBusGMainLoop
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import ctypes
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import ctypes.util
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version = "1.0.2"
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# Brief description of the operation of this program:
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#
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# This server announces itself as a Zeroconf service. Connecting
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# clients use the TLS protocol, with the unusual quirk that this
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# server program acts as a TLS "client" while the connecting clients
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# acts as a TLS "server". The clients (acting as a TLS "server") must
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# supply an OpenPGP certificate, and the fingerprint of this
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# certificate is used by this server to look up (in a list read from a
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# file at start time) which binary blob to give the client. No other
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# authentication or authorization is done by this server.
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logger = logging.Logger('mandos')
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = "/dev/log"))
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syslogger.setFormatter(logging.Formatter
76
('Mandos: %(levelname)s: %(message)s'))
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syslogger = logging.handlers.SysLogHandler\
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON)
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syslogger.setFormatter(logging.Formatter\
81
('%(levelname)s: %(message)s'))
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(name)s: %(levelname)s:'
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' %(message)s'))
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logger.addHandler(console)
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class AvahiError(Exception):
85
def __init__(self, value):
86
self.value = value
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super(AvahiError, self).__init__()
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def __str__(self):
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return repr(self.value)
90
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class AvahiServiceError(AvahiError):
92
pass
93
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class AvahiGroupError(AvahiError):
95
pass
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class AvahiService(object):
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"""An Avahi (Zeroconf) service.
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Attributes:
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interface: integer; avahi.IF_UNSPEC or an interface index.
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Used to optionally bind to the specified interface.
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name: string; Example: 'Mandos'
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type: string; Example: '_mandos._tcp'.
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See <http://www.dns-sd.org/ServiceTypes.html>
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port: integer; what port to announce
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TXT: list of strings; TXT record for the service
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domain: string; Domain to publish on, default to .local if empty.
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host: string; Host to publish records for, default is localhost
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max_renames: integer; maximum number of renames
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rename_count: integer; counter so we only rename after collisions
112
a sensible number of times
113
"""
114
def __init__(self, interface = avahi.IF_UNSPEC, name = None,
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servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768):
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self.interface = interface
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self.name = name
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self.type = servicetype
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self.port = port
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self.TXT = TXT if TXT is not None else []
122
self.domain = domain
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self.host = host
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self.rename_count = 0
125
self.max_renames = max_renames
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def rename(self):
127
"""Derived from the Avahi example code"""
128
if self.rename_count >= self.max_renames:
129
logger.critical(u"No suitable Zeroconf service name found"
130
u" after %i retries, exiting.",
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self.rename_count)
132
raise AvahiServiceError("Too many renames")
133
self.name = server.GetAlternativeServiceName(self.name)
134
logger.info(u"Changing Zeroconf service name to %r ...",
135
str(self.name))
136
syslogger.setFormatter(logging.Formatter
137
('Mandos (%s): %%(levelname)s:'
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' %%(message)s' % self.name))
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self.remove()
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self.add()
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self.rename_count += 1
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def remove(self):
143
"""Derived from the Avahi example code"""
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if group is not None:
145
group.Reset()
146
def add(self):
147
"""Derived from the Avahi example code"""
148
global group
149
if group is None:
150
group = dbus.Interface(bus.get_object
151
(avahi.DBUS_NAME,
152
server.EntryGroupNew()),
153
avahi.DBUS_INTERFACE_ENTRY_GROUP)
154
group.connect_to_signal('StateChanged',
155
entry_group_state_changed)
156
logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
157
service.name, service.type)
158
group.AddService(
159
self.interface, # interface
160
avahi.PROTO_INET6, # protocol
161
dbus.UInt32(0), # flags
162
self.name, self.type,
163
self.domain, self.host,
164
dbus.UInt16(self.port),
165
avahi.string_array_to_txt_array(self.TXT))
166
group.Commit()
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83
del syslogger
84
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# This variable is used to optionally bind to a specified interface.
86
# It is a global variable to fit in with the other variables from the
87
# Avahi example code.
88
serviceInterface = avahi.IF_UNSPEC
168
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# From the Avahi example code:
169
group = None # our entry group
90
serviceName = None
91
serviceType = "_mandos._tcp" # http://www.dns-sd.org/ServiceTypes.html
92
servicePort = None # Not known at startup
93
serviceTXT = [] # TXT record for the service
94
domain = "" # Domain to publish on, default to .local
95
host = "" # Host to publish records for, default to localhost
96
group = None #our entry group
97
rename_count = 12 # Counter so we only rename after collisions a
98
# sensible number of times
170
99
# End of Avahi example code
171
100
172
101
173
def _datetime_to_dbus(dt, variant_level=0):
174
"""Convert a UTC datetime.datetime() to a D-Bus type."""
175
return dbus.String(dt.isoformat(), variant_level=variant_level)
176
177
178
class Client(dbus.service.Object):
102
class Client(object):
179
103
"""A representation of a client host served by this server.
180
104
Attributes:
181
name: string; from the config file, used in log messages
105
name: string; from the config file, used in log messages
182
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fingerprint: string (40 or 32 hexadecimal digits); used to
183
107
uniquely identify the client
184
secret: bytestring; sent verbatim (over TLS) to client
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host: string; available for use by the checker command
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created: datetime.datetime(); (UTC) object creation
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last_enabled: datetime.datetime(); (UTC)
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enabled: bool()
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last_checked_ok: datetime.datetime(); (UTC) or None
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timeout: datetime.timedelta(); How long from last_checked_ok
191
until this client is invalid
192
interval: datetime.timedelta(); How often to start a new checker
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disable_hook: If set, called by disable() as disable_hook(self)
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checker: subprocess.Popen(); a running checker process used
195
to see if the client lives.
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'None' if no process is running.
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secret: bytestring; sent verbatim (over TLS) to client
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fqdn: string (FQDN); available for use by the checker command
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created: datetime.datetime()
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last_seen: datetime.datetime() or None if not yet seen
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timeout: datetime.timedelta(); How long from last_seen until
113
this client is invalid
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interval: datetime.timedelta(); How often to start a new checker
115
stop_hook: If set, called by stop() as stop_hook(self)
116
checker: subprocess.Popen(); a running checker process used
117
to see if the client lives.
118
Is None if no process is running.
197
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checker_initiator_tag: a gobject event source tag, or None
198
disable_initiator_tag: - '' -
120
stop_initiator_tag: - '' -
199
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checker_callback_tag: - '' -
200
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checker_command: string; External command which is run to check if
201
client lives. %() expansions are done at
123
client lives. %()s expansions are done at
202
124
runtime with vars(self) as dict, so that for
203
125
instance %(name)s can be used in the command.
204
dbus_object_path: dbus.ObjectPath
205
126
Private attibutes:
206
127
_timeout: Real variable for 'timeout'
207
128
_interval: Real variable for 'interval'
208
_timeout_milliseconds: Used when calling gobject.timeout_add()
129
_timeout_milliseconds: Used by gobject.timeout_add()
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130
_interval_milliseconds: - '' -
210
131
"""
211
132
def _set_timeout(self, timeout):
212
"Setter function for the 'timeout' attribute"
133
"Setter function for 'timeout' attribute"
213
134
self._timeout = timeout
214
135
self._timeout_milliseconds = ((self.timeout.days
215
136
* 24 * 60 * 60 * 1000)
216
137
+ (self.timeout.seconds * 1000)
217
138
+ (self.timeout.microseconds
218
139
// 1000))
219
# Emit D-Bus signal
220
self.PropertyChanged(dbus.String(u"timeout"),
221
(dbus.UInt64(self._timeout_milliseconds,
222
variant_level=1)))
223
timeout = property(lambda self: self._timeout, _set_timeout)
140
timeout = property(lambda self: self._timeout,
141
_set_timeout)
224
142
del _set_timeout
225
226
143
def _set_interval(self, interval):
227
"Setter function for the 'interval' attribute"
144
"Setter function for 'interval' attribute"
228
145
self._interval = interval
229
146
self._interval_milliseconds = ((self.interval.days
230
147
* 24 * 60 * 60 * 1000)
232
149
* 1000)
233
150
+ (self.interval.microseconds
234
151
// 1000))
235
# Emit D-Bus signal
236
self.PropertyChanged(dbus.String(u"interval"),
237
(dbus.UInt64(self._interval_milliseconds,
238
variant_level=1)))
239
interval = property(lambda self: self._interval, _set_interval)
152
interval = property(lambda self: self._interval,
153
_set_interval)
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del _set_interval
241
242
def __init__(self, name = None, disable_hook=None, config=None):
243
"""Note: the 'checker' key in 'config' sets the
244
'checker_command' attribute and *not* the 'checker'
245
attribute."""
246
self.dbus_object_path = (dbus.ObjectPath
247
("/Mandos/clients/"
248
+ name.replace(".", "_")))
249
dbus.service.Object.__init__(self, bus,
250
self.dbus_object_path)
251
if config is None:
252
config = {}
155
def __init__(self, name=None, stop_hook=None, fingerprint=None,
156
secret=None, secfile=None, fqdn=None, timeout=None,
157
interval=-1, checker=None):
158
"""Note: the 'checker' argument sets the 'checker_command'
159
attribute and not the 'checker' attribute.."""
253
160
self.name = name
254
161
logger.debug(u"Creating client %r", self.name)
255
# Uppercase and remove spaces from fingerprint for later
256
# comparison purposes with return value from the fingerprint()
257
# function
258
self.fingerprint = (config["fingerprint"].upper()
259
.replace(u" ", u""))
162
# Uppercase and remove spaces from fingerprint
163
# for later comparison purposes with return value of
164
# the fingerprint() function
165
self.fingerprint = fingerprint.upper().replace(u" ", u"")
260
166
logger.debug(u" Fingerprint: %s", self.fingerprint)
261
if "secret" in config:
262
self.secret = config["secret"].decode(u"base64")
263
elif "secfile" in config:
264
with closing(open(os.path.expanduser
265
(os.path.expandvars
266
(config["secfile"])))) as secfile:
267
self.secret = secfile.read()
167
if secret:
168
self.secret = secret.decode(u"base64")
169
elif secfile:
170
sf = open(secfile)
171
self.secret = sf.read()
172
sf.close()
268
173
else:
269
raise TypeError(u"No secret or secfile for client %s"
270
% self.name)
271
self.host = config.get("host", "")
272
self.created = datetime.datetime.utcnow()
273
self.enabled = False
274
self.last_enabled = None
275
self.last_checked_ok = None
276
self.timeout = string_to_delta(config["timeout"])
277
self.interval = string_to_delta(config["interval"])
278
self.disable_hook = disable_hook
174
raise RuntimeError(u"No secret or secfile for client %s"
175
% self.name)
176
self.fqdn = fqdn # string
177
self.created = datetime.datetime.now()
178
self.last_seen = None
179
self.timeout = string_to_delta(timeout)
180
self.interval = string_to_delta(interval)
181
self.stop_hook = stop_hook
279
182
self.checker = None
280
183
self.checker_initiator_tag = None
281
self.disable_initiator_tag = None
184
self.stop_initiator_tag = None
282
185
self.checker_callback_tag = None
283
self.checker_command = config["checker"]
284
285
def enable(self):
186
self.check_command = checker
187
def start(self):
286
188
"""Start this client's checker and timeout hooks"""
287
self.last_enabled = datetime.datetime.utcnow()
288
189
# Schedule a new checker to be started an 'interval' from now,
289
190
# and every interval from then on.
290
self.checker_initiator_tag = (gobject.timeout_add
291
(self._interval_milliseconds,
292
self.start_checker))
191
self.checker_initiator_tag = gobject.timeout_add\
192
(self._interval_milliseconds,
193
self.start_checker)
293
194
# Also start a new checker *right now*.
294
195
self.start_checker()
295
# Schedule a disable() when 'timeout' has passed
296
self.disable_initiator_tag = (gobject.timeout_add
297
(self._timeout_milliseconds,
298
self.disable))
299
self.enabled = True
300
# Emit D-Bus signal
301
self.PropertyChanged(dbus.String(u"enabled"),
302
dbus.Boolean(True, variant_level=1))
303
self.PropertyChanged(dbus.String(u"last_enabled"),
304
(_datetime_to_dbus(self.last_enabled,
305
variant_level=1)))
306
307
def disable(self):
308
"""Disable this client."""
309
if not getattr(self, "enabled", False):
196
# Schedule a stop() when 'timeout' has passed
197
self.stop_initiator_tag = gobject.timeout_add\
198
(self._timeout_milliseconds,
199
self.stop)
200
def stop(self):
201
"""Stop this client.
202
The possibility that this client might be restarted is left
203
open, but not currently used."""
204
# If this client doesn't have a secret, it is already stopped.
205
if self.secret:
206
logger.debug(u"Stopping client %s", self.name)
207
self.secret = None
208
else:
310
209
return False
311
logger.info(u"Disabling client %s", self.name)
312
if getattr(self, "disable_initiator_tag", False):
313
gobject.source_remove(self.disable_initiator_tag)
314
self.disable_initiator_tag = None
315
if getattr(self, "checker_initiator_tag", False):
210
if hasattr(self, "stop_initiator_tag") \
211
and self.stop_initiator_tag:
212
gobject.source_remove(self.stop_initiator_tag)
213
self.stop_initiator_tag = None
214
if hasattr(self, "checker_initiator_tag") \
215
and self.checker_initiator_tag:
316
216
gobject.source_remove(self.checker_initiator_tag)
317
217
self.checker_initiator_tag = None
318
218
self.stop_checker()
319
if self.disable_hook:
320
self.disable_hook(self)
321
self.enabled = False
322
# Emit D-Bus signal
323
self.PropertyChanged(dbus.String(u"enabled"),
324
dbus.Boolean(False, variant_level=1))
219
if self.stop_hook:
220
self.stop_hook(self)
325
221
# Do not run this again if called by a gobject.timeout_add
326
222
return False
327
328
223
def __del__(self):
329
self.disable_hook = None
330
self.disable()
331
332
def checker_callback(self, pid, condition, command):
224
self.stop_hook = None
225
self.stop()
226
def checker_callback(self, pid, condition):
333
227
"""The checker has completed, so take appropriate actions."""
228
now = datetime.datetime.now()
334
229
self.checker_callback_tag = None
335
230
self.checker = None
336
# Emit D-Bus signal
337
self.PropertyChanged(dbus.String(u"checker_running"),
338
dbus.Boolean(False, variant_level=1))
339
if (os.WIFEXITED(condition)
340
and (os.WEXITSTATUS(condition) == 0)):
341
logger.info(u"Checker for %(name)s succeeded",
342
vars(self))
343
# Emit D-Bus signal
344
self.CheckerCompleted(dbus.Boolean(True),
345
dbus.UInt16(condition),
346
dbus.String(command))
347
self.bump_timeout()
231
if os.WIFEXITED(condition) \
232
and (os.WEXITSTATUS(condition) == 0):
233
logger.debug(u"Checker for %(name)s succeeded",
234
vars(self))
235
self.last_seen = now
236
gobject.source_remove(self.stop_initiator_tag)
237
self.stop_initiator_tag = gobject.timeout_add\
238
(self._timeout_milliseconds,
239
self.stop)
348
240
elif not os.WIFEXITED(condition):
349
241
logger.warning(u"Checker for %(name)s crashed?",
350
242
vars(self))
351
# Emit D-Bus signal
352
self.CheckerCompleted(dbus.Boolean(False),
353
dbus.UInt16(condition),
354
dbus.String(command))
355
243
else:
356
logger.info(u"Checker for %(name)s failed",
357
vars(self))
358
# Emit D-Bus signal
359
self.CheckerCompleted(dbus.Boolean(False),
360
dbus.UInt16(condition),
361
dbus.String(command))
362
363
def bump_timeout(self):
364
"""Bump up the timeout for this client.
365
This should only be called when the client has been seen,
366
alive and well.
367
"""
368
self.last_checked_ok = datetime.datetime.utcnow()
369
gobject.source_remove(self.disable_initiator_tag)
370
self.disable_initiator_tag = (gobject.timeout_add
371
(self._timeout_milliseconds,
372
self.disable))
373
self.PropertyChanged(dbus.String(u"last_checked_ok"),
374
(_datetime_to_dbus(self.last_checked_ok,
375
variant_level=1)))
376
244
logger.debug(u"Checker for %(name)s failed",
245
vars(self))
377
246
def start_checker(self):
378
247
"""Start a new checker subprocess if one is not running.
379
248
If a checker already exists, leave it running and do
388
257
# is as it should be.
389
258
if self.checker is None:
390
259
try:
391
# In case checker_command has exactly one % operator
392
command = self.checker_command % self.host
260
command = self.check_command % self.fqdn
393
261
except TypeError:
394
# Escape attributes for the shell
395
262
escaped_attrs = dict((key, re.escape(str(val)))
396
263
for key, val in
397
264
vars(self).iteritems())
398
265
try:
399
command = self.checker_command % escaped_attrs
266
command = self.check_command % escaped_attrs
400
267
except TypeError, error:
401
logger.error(u'Could not format string "%s":'
402
u' %s', self.checker_command, error)
268
logger.critical(u'Could not format string "%s":'
269
u' %s', self.check_command, error)
403
270
return True # Try again later
404
271
try:
405
logger.info(u"Starting checker %r for %s",
406
command, self.name)
407
# We don't need to redirect stdout and stderr, since
408
# in normal mode, that is already done by daemon(),
409
# and in debug mode we don't want to. (Stdin is
410
# always replaced by /dev/null.)
411
self.checker = subprocess.Popen(command,
412
close_fds=True,
413
shell=True, cwd="/")
414
# Emit D-Bus signal
415
self.CheckerStarted(command)
416
self.PropertyChanged(dbus.String("checker_running"),
417
dbus.Boolean(True, variant_level=1))
418
self.checker_callback_tag = (gobject.child_watch_add
419
(self.checker.pid,
420
self.checker_callback,
421
data=command))
422
except OSError, error:
272
logger.debug(u"Starting checker %r for %s",
273
command, self.name)
274
self.checker = subprocess.\
275
Popen(command,
276
close_fds=True, shell=True,
277
cwd="/")
278
self.checker_callback_tag = gobject.child_watch_add\
279
(self.checker.pid,
280
self.checker_callback)
281
except subprocess.OSError, error:
423
282
logger.error(u"Failed to start subprocess: %s",
424
283
error)
425
284
# Re-run this periodically if run by gobject.timeout_add
426
285
return True
427
428
286
def stop_checker(self):
429
287
"""Force the checker process, if any, to stop."""
430
288
if self.checker_callback_tag:
431
289
gobject.source_remove(self.checker_callback_tag)
432
290
self.checker_callback_tag = None
433
if getattr(self, "checker", None) is None:
291
if not hasattr(self, "checker") or self.checker is None:
434
292
return
435
logger.debug(u"Stopping checker for %(name)s", vars(self))
293
logger.debug("Stopping checker for %(name)s", vars(self))
436
294
try:
437
295
os.kill(self.checker.pid, signal.SIGTERM)
438
296
#os.sleep(0.5)
439
297
#if self.checker.poll() is None:
440
298
# os.kill(self.checker.pid, signal.SIGKILL)
441
299
except OSError, error:
442
if error.errno != errno.ESRCH: # No such process
300
if error.errno != errno.ESRCH:
443
301
raise
444
302
self.checker = None
445
self.PropertyChanged(dbus.String(u"checker_running"),
446
dbus.Boolean(False, variant_level=1))
447
448
def still_valid(self):
303
def still_valid(self, now=None):
449
304
"""Has the timeout not yet passed for this client?"""
450
if not getattr(self, "enabled", False):
451
return False
452
now = datetime.datetime.utcnow()
453
if self.last_checked_ok is None:
305
if now is None:
306
now = datetime.datetime.now()
307
if self.last_seen is None:
454
308
return now < (self.created + self.timeout)
455
309
else:
456
return now < (self.last_checked_ok + self.timeout)
457
458
## D-Bus methods & signals
459
_interface = u"org.mandos_system.Mandos.Client"
460
461
# BumpTimeout - method
462
BumpTimeout = dbus.service.method(_interface)(bump_timeout)
463
BumpTimeout.__name__ = "BumpTimeout"
464
465
# CheckerCompleted - signal
466
@dbus.service.signal(_interface, signature="bqs")
467
def CheckerCompleted(self, success, condition, command):
468
"D-Bus signal"
469
pass
470
471
# CheckerStarted - signal
472
@dbus.service.signal(_interface, signature="s")
473
def CheckerStarted(self, command):
474
"D-Bus signal"
475
pass
476
477
# GetAllProperties - method
478
@dbus.service.method(_interface, out_signature="a{sv}")
479
def GetAllProperties(self):
480
"D-Bus method"
481
return dbus.Dictionary({
482
dbus.String("name"):
483
dbus.String(self.name, variant_level=1),
484
dbus.String("fingerprint"):
485
dbus.String(self.fingerprint, variant_level=1),
486
dbus.String("host"):
487
dbus.String(self.host, variant_level=1),
488
dbus.String("created"):
489
_datetime_to_dbus(self.created, variant_level=1),
490
dbus.String("last_enabled"):
491
(_datetime_to_dbus(self.last_enabled,
492
variant_level=1)
493
if self.last_enabled is not None
494
else dbus.Boolean(False, variant_level=1)),
495
dbus.String("enabled"):
496
dbus.Boolean(self.enabled, variant_level=1),
497
dbus.String("last_checked_ok"):
498
(_datetime_to_dbus(self.last_checked_ok,
499
variant_level=1)
500
if self.last_checked_ok is not None
501
else dbus.Boolean (False, variant_level=1)),
502
dbus.String("timeout"):
503
dbus.UInt64(self._timeout_milliseconds,
504
variant_level=1),
505
dbus.String("interval"):
506
dbus.UInt64(self._interval_milliseconds,
507
variant_level=1),
508
dbus.String("checker"):
509
dbus.String(self.checker_command,
510
variant_level=1),
511
dbus.String("checker_running"):
512
dbus.Boolean(self.checker is not None,
513
variant_level=1),
514
}, signature="sv")
515
516
# IsStillValid - method
517
IsStillValid = (dbus.service.method(_interface, out_signature="b")
518
(still_valid))
519
IsStillValid.__name__ = "IsStillValid"
520
521
# PropertyChanged - signal
522
@dbus.service.signal(_interface, signature="sv")
523
def PropertyChanged(self, property, value):
524
"D-Bus signal"
525
pass
526
527
# SetChecker - method
528
@dbus.service.method(_interface, in_signature="s")
529
def SetChecker(self, checker):
530
"D-Bus setter method"
531
self.checker_command = checker
532
533
# SetHost - method
534
@dbus.service.method(_interface, in_signature="s")
535
def SetHost(self, host):
536
"D-Bus setter method"
537
self.host = host
538
539
# SetInterval - method
540
@dbus.service.method(_interface, in_signature="t")
541
def SetInterval(self, milliseconds):
542
self.interval = datetime.timdeelta(0, 0, 0, milliseconds)
543
544
# SetSecret - method
545
@dbus.service.method(_interface, in_signature="ay",
546
byte_arrays=True)
547
def SetSecret(self, secret):
548
"D-Bus setter method"
549
self.secret = str(secret)
550
551
# SetTimeout - method
552
@dbus.service.method(_interface, in_signature="t")
553
def SetTimeout(self, milliseconds):
554
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
555
556
# Enable - method
557
Enable = dbus.service.method(_interface)(enable)
558
Enable.__name__ = "Enable"
559
560
# StartChecker - method
561
@dbus.service.method(_interface)
562
def StartChecker(self):
563
"D-Bus method"
564
self.start_checker()
565
566
# Disable - method
567
@dbus.service.method(_interface)
568
def Disable(self):
569
"D-Bus method"
570
self.disable()
571
572
# StopChecker - method
573
StopChecker = dbus.service.method(_interface)(stop_checker)
574
StopChecker.__name__ = "StopChecker"
575
576
del _interface
310
return now < (self.last_seen + self.timeout)
577
311
578
312
579
313
def peer_certificate(session):
580
314
"Return the peer's OpenPGP certificate as a bytestring"
581
315
# If not an OpenPGP certificate...
582
if (gnutls.library.functions
583
.gnutls_certificate_type_get(session._c_object)
584
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
316
if gnutls.library.functions.gnutls_certificate_type_get\
317
(session._c_object) \
318
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
585
319
# ...do the normal thing
586
320
return session.peer_certificate
587
321
list_size = ctypes.c_uint()
588
cert_list = (gnutls.library.functions
589
.gnutls_certificate_get_peers
590
(session._c_object, ctypes.byref(list_size)))
322
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
323
(session._c_object, ctypes.byref(list_size))
591
324
if list_size.value == 0:
592
325
return None
593
326
cert = cert_list[0]
596
329
597
330
def fingerprint(openpgp):
598
331
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
599
# New GnuTLS "datum" with the OpenPGP public key
600
datum = (gnutls.library.types
601
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
602
ctypes.POINTER
603
(ctypes.c_ubyte)),
604
ctypes.c_uint(len(openpgp))))
605
332
# New empty GnuTLS certificate
606
333
crt = gnutls.library.types.gnutls_openpgp_crt_t()
607
(gnutls.library.functions
608
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
334
gnutls.library.functions.gnutls_openpgp_crt_init\
335
(ctypes.byref(crt))
336
# New GnuTLS "datum" with the OpenPGP public key
337
datum = gnutls.library.types.gnutls_datum_t\
338
(ctypes.cast(ctypes.c_char_p(openpgp),
339
ctypes.POINTER(ctypes.c_ubyte)),
340
ctypes.c_uint(len(openpgp)))
609
341
# Import the OpenPGP public key into the certificate
610
(gnutls.library.functions
611
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
612
gnutls.library.constants
613
.GNUTLS_OPENPGP_FMT_RAW))
614
# Verify the self signature in the key
615
crtverify = ctypes.c_uint()
616
(gnutls.library.functions
617
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
618
if crtverify.value != 0:
619
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
620
raise gnutls.errors.CertificateSecurityError("Verify failed")
342
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
343
(crt,
344
ctypes.byref(datum),
345
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
621
346
# New buffer for the fingerprint
622
buf = ctypes.create_string_buffer(20)
623
buf_len = ctypes.c_size_t()
347
buffer = ctypes.create_string_buffer(20)
348
buffer_length = ctypes.c_size_t()
624
349
# Get the fingerprint from the certificate into the buffer
625
(gnutls.library.functions
626
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
627
ctypes.byref(buf_len)))
350
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
351
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
628
352
# Deinit the certificate
629
353
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
630
354
# Convert the buffer to a Python bytestring
631
fpr = ctypes.string_at(buf, buf_len.value)
355
fpr = ctypes.string_at(buffer, buffer_length.value)
632
356
# Convert the bytestring to hexadecimal notation
633
357
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
634
358
return hex_fpr
635
359
636
360
637
class TCP_handler(SocketServer.BaseRequestHandler, object):
361
class tcp_handler(SocketServer.BaseRequestHandler, object):
638
362
"""A TCP request handler class.
639
363
Instantiated by IPv6_TCPServer for each request to handle it.
640
364
Note: This will run in its own forked process."""
641
365
642
366
def handle(self):
643
logger.info(u"TCP connection from: %s",
644
unicode(self.client_address))
645
session = (gnutls.connection
646
.ClientSession(self.request,
647
gnutls.connection
648
.X509Credentials()))
649
650
line = self.request.makefile().readline()
651
logger.debug(u"Protocol version: %r", line)
652
try:
653
if int(line.strip().split()[0]) > 1:
654
raise RuntimeError
655
except (ValueError, IndexError, RuntimeError), error:
656
logger.error(u"Unknown protocol version: %s", error)
657
return
658
659
# Note: gnutls.connection.X509Credentials is really a generic
660
# GnuTLS certificate credentials object so long as no X.509
661
# keys are added to it. Therefore, we can use it here despite
662
# using OpenPGP certificates.
367
logger.debug(u"TCP connection from: %s",
368
unicode(self.client_address))
369
session = gnutls.connection.ClientSession(self.request,
370
gnutls.connection.\
371
X509Credentials())
663
372
664
373
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
665
374
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
666
375
# "+DHE-DSS"))
667
# Use a fallback default, since this MUST be set.
668
priority = self.server.settings.get("priority", "NORMAL")
669
(gnutls.library.functions
670
.gnutls_priority_set_direct(session._c_object,
671
priority, None))
376
priority = "NORMAL"
377
if self.server.options.priority:
378
priority = self.server.options.priority
379
gnutls.library.functions.gnutls_priority_set_direct\
380
(session._c_object, priority, None);
672
381
673
382
try:
674
383
session.handshake()
675
384
except gnutls.errors.GNUTLSError, error:
676
logger.warning(u"Handshake failed: %s", error)
385
logger.debug(u"Handshake failed: %s", error)
677
386
# Do not run session.bye() here: the session is not
678
387
# established. Just abandon the request.
679
388
return
680
389
try:
681
390
fpr = fingerprint(peer_certificate(session))
682
391
except (TypeError, gnutls.errors.GNUTLSError), error:
683
logger.warning(u"Bad certificate: %s", error)
392
logger.debug(u"Bad certificate: %s", error)
684
393
session.bye()
685
394
return
686
395
logger.debug(u"Fingerprint: %s", fpr)
396
client = None
687
397
for c in self.server.clients:
688
398
if c.fingerprint == fpr:
689
399
client = c
690
400
break
691
else:
692
logger.warning(u"Client not found for fingerprint: %s",
693
fpr)
694
session.bye()
695
return
696
401
# Have to check if client.still_valid(), since it is possible
697
402
# that the client timed out while establishing the GnuTLS
698
403
# session.
699
if not client.still_valid():
700
logger.warning(u"Client %(name)s is invalid",
701
vars(client))
404
if (not client) or (not client.still_valid()):
405
if client:
406
logger.debug(u"Client %(name)s is invalid",
407
vars(client))
408
else:
409
logger.debug(u"Client not found for fingerprint: %s",
410
fpr)
702
411
session.bye()
703
412
return
704
## This won't work here, since we're in a fork.
705
# client.bump_timeout()
706
413
sent_size = 0
707
414
while sent_size < len(client.secret):
708
415
sent = session.send(client.secret[sent_size:])
713
420
session.bye()
714
421
715
422
716
class IPv6_TCPServer(SocketServer.ForkingMixIn,
717
SocketServer.TCPServer, object):
423
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
718
424
"""IPv6 TCP server. Accepts 'None' as address and/or port.
719
425
Attributes:
720
settings: Server settings
426
options: Command line options
721
427
clients: Set() of Client objects
722
enabled: Boolean; whether this server is activated yet
723
428
"""
724
429
address_family = socket.AF_INET6
725
430
def __init__(self, *args, **kwargs):
726
if "settings" in kwargs:
727
self.settings = kwargs["settings"]
728
del kwargs["settings"]
431
if "options" in kwargs:
432
self.options = kwargs["options"]
433
del kwargs["options"]
729
434
if "clients" in kwargs:
730
435
self.clients = kwargs["clients"]
731
436
del kwargs["clients"]
732
self.enabled = False
733
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
437
return super(type(self), self).__init__(*args, **kwargs)
734
438
def server_bind(self):
735
439
"""This overrides the normal server_bind() function
736
440
to bind to an interface if one was specified, and also NOT to
737
441
bind to an address or port if they were not specified."""
738
if self.settings["interface"]:
739
# 25 is from /usr/include/asm-i486/socket.h
740
SO_BINDTODEVICE = getattr(socket, "SO_BINDTODEVICE", 25)
442
if self.options.interface:
443
if not hasattr(socket, "SO_BINDTODEVICE"):
444
# From /usr/include/asm-i486/socket.h
445
socket.SO_BINDTODEVICE = 25
741
446
try:
742
447
self.socket.setsockopt(socket.SOL_SOCKET,
743
SO_BINDTODEVICE,
744
self.settings["interface"])
448
socket.SO_BINDTODEVICE,
449
self.options.interface)
745
450
except socket.error, error:
746
451
if error[0] == errno.EPERM:
747
logger.error(u"No permission to"
748
u" bind to interface %s",
749
self.settings["interface"])
452
logger.warning(u"No permission to"
453
u" bind to interface %s",
454
self.options.interface)
750
455
else:
751
456
raise error
752
457
# Only bind(2) the socket if we really need to.
755
460
in6addr_any = "::"
756
461
self.server_address = (in6addr_any,
757
462
self.server_address[1])
758
elif not self.server_address[1]:
463
elif self.server_address[1] is None:
759
464
self.server_address = (self.server_address[0],
760
465
0)
761
# if self.settings["interface"]:
762
# self.server_address = (self.server_address[0],
763
# 0, # port
764
# 0, # flowinfo
765
# if_nametoindex
766
# (self.settings
767
# ["interface"]))
768
return super(IPv6_TCPServer, self).server_bind()
769
def server_activate(self):
770
if self.enabled:
771
return super(IPv6_TCPServer, self).server_activate()
772
def enable(self):
773
self.enabled = True
466
return super(type(self), self).server_bind()
774
467
775
468
776
469
def string_to_delta(interval):
786
479
datetime.timedelta(1)
787
480
>>> string_to_delta(u'1w')
788
481
datetime.timedelta(7)
789
>>> string_to_delta('5m 30s')
790
datetime.timedelta(0, 330)
791
482
"""
792
timevalue = datetime.timedelta(0)
793
for s in interval.split():
794
try:
795
suffix = unicode(s[-1])
796
value = int(s[:-1])
797
if suffix == u"d":
798
delta = datetime.timedelta(value)
799
elif suffix == u"s":
800
delta = datetime.timedelta(0, value)
801
elif suffix == u"m":
802
delta = datetime.timedelta(0, 0, 0, 0, value)
803
elif suffix == u"h":
804
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
805
elif suffix == u"w":
806
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
807
else:
808
raise ValueError
809
except (ValueError, IndexError):
483
try:
484
suffix=unicode(interval[-1])
485
value=int(interval[:-1])
486
if suffix == u"d":
487
delta = datetime.timedelta(value)
488
elif suffix == u"s":
489
delta = datetime.timedelta(0, value)
490
elif suffix == u"m":
491
delta = datetime.timedelta(0, 0, 0, 0, value)
492
elif suffix == u"h":
493
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
494
elif suffix == u"w":
495
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
496
else:
810
497
raise ValueError
811
timevalue += delta
812
return timevalue
498
except (ValueError, IndexError):
499
raise ValueError
500
return delta
501
502
503
def add_service():
504
"""Derived from the Avahi example code"""
505
global group, serviceName, serviceType, servicePort, serviceTXT, \
506
domain, host
507
if group is None:
508
group = dbus.Interface(
509
bus.get_object( avahi.DBUS_NAME,
510
server.EntryGroupNew()),
511
avahi.DBUS_INTERFACE_ENTRY_GROUP)
512
group.connect_to_signal('StateChanged',
513
entry_group_state_changed)
514
logger.debug(u"Adding service '%s' of type '%s' ...",
515
serviceName, serviceType)
516
517
group.AddService(
518
serviceInterface, # interface
519
avahi.PROTO_INET6, # protocol
520
dbus.UInt32(0), # flags
521
serviceName, serviceType,
522
domain, host,
523
dbus.UInt16(servicePort),
524
avahi.string_array_to_txt_array(serviceTXT))
525
group.Commit()
526
527
528
def remove_service():
529
"""From the Avahi example code"""
530
global group
531
532
if not group is None:
533
group.Reset()
813
534
814
535
815
536
def server_state_changed(state):
816
537
"""Derived from the Avahi example code"""
817
538
if state == avahi.SERVER_COLLISION:
818
logger.error(u"Zeroconf server name collision")
819
service.remove()
539
logger.warning(u"Server name collision")
540
remove_service()
820
541
elif state == avahi.SERVER_RUNNING:
821
service.add()
542
add_service()
822
543
823
544
824
545
def entry_group_state_changed(state, error):
825
546
"""Derived from the Avahi example code"""
826
logger.debug(u"Avahi state change: %i", state)
547
global serviceName, server, rename_count
548
549
logger.debug(u"state change: %i", state)
827
550
828
551
if state == avahi.ENTRY_GROUP_ESTABLISHED:
829
logger.debug(u"Zeroconf service established.")
552
logger.debug(u"Service established.")
830
553
elif state == avahi.ENTRY_GROUP_COLLISION:
831
logger.warning(u"Zeroconf service name collision.")
832
service.rename()
554
555
rename_count = rename_count - 1
556
if rename_count > 0:
557
name = server.GetAlternativeServiceName(name)
558
logger.warning(u"Service name collision, "
559
u"changing name to '%s' ...", name)
560
remove_service()
561
add_service()
562
563
else:
564
logger.error(u"No suitable service name found after %i"
565
u" retries, exiting.", n_rename)
566
killme(1)
833
567
elif state == avahi.ENTRY_GROUP_FAILURE:
834
logger.critical(u"Avahi: Error in group state changed %s",
835
unicode(error))
836
raise AvahiGroupError("State changed: %s", str(error))
568
logger.error(u"Error in group state changed %s",
569
unicode(error))
570
killme(1)
571
837
572
838
573
def if_nametoindex(interface):
839
"""Call the C function if_nametoindex(), or equivalent"""
840
global if_nametoindex
574
"""Call the C function if_nametoindex()"""
841
575
try:
842
if_nametoindex = (ctypes.cdll.LoadLibrary
843
(ctypes.util.find_library("c"))
844
.if_nametoindex)
576
libc = ctypes.cdll.LoadLibrary("libc.so.6")
577
return libc.if_nametoindex(interface)
845
578
except (OSError, AttributeError):
846
579
if "struct" not in sys.modules:
847
580
import struct
848
581
if "fcntl" not in sys.modules:
849
582
import fcntl
850
def if_nametoindex(interface):
851
"Get an interface index the hard way, i.e. using fcntl()"
852
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
853
with closing(socket.socket()) as s:
854
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
855
struct.pack("16s16x", interface))
856
interface_index = struct.unpack("I", ifreq[16:20])[0]
857
return interface_index
858
return if_nametoindex(interface)
859
860
861
def daemon(nochdir = False, noclose = False):
583
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
584
s = socket.socket()
585
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
586
struct.pack("16s16x", interface))
587
s.close()
588
interface_index = struct.unpack("I", ifreq[16:20])[0]
589
return interface_index
590
591
592
def daemon(nochdir, noclose):
862
593
"""See daemon(3). Standard BSD Unix function.
863
594
This should really exist as os.daemon, but it doesn't (yet)."""
864
595
if os.fork():
866
597
os.setsid()
867
598
if not nochdir:
868
599
os.chdir("/")
869
if os.fork():
870
sys.exit()
871
600
if not noclose:
872
601
# Close all standard open file descriptors
873
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
602
null = os.open("/dev/null", os.O_NOCTTY | os.O_RDWR)
874
603
if not stat.S_ISCHR(os.fstat(null).st_mode):
875
604
raise OSError(errno.ENODEV,
876
605
"/dev/null not a character device")
881
610
os.close(null)
882
611
883
612
613
def killme(status = 0):
614
logger.debug("Stopping server with exit status %d", status)
615
exitstatus = status
616
if main_loop_started:
617
main_loop.quit()
618
else:
619
sys.exit(status)
620
621
884
622
def main():
885
parser = OptionParser(version = "%%prog %s" % version)
623
global exitstatus
624
exitstatus = 0
625
global main_loop_started
626
main_loop_started = False
627
628
parser = OptionParser()
886
629
parser.add_option("-i", "--interface", type="string",
887
metavar="IF", help="Bind to interface IF")
888
parser.add_option("-a", "--address", type="string",
630
default=None, metavar="IF",
631
help="Bind to interface IF")
632
parser.add_option("-a", "--address", type="string", default=None,
889
633
help="Address to listen for requests on")
890
parser.add_option("-p", "--port", type="int",
634
parser.add_option("-p", "--port", type="int", default=None,
891
635
help="Port number to receive requests on")
892
636
parser.add_option("--check", action="store_true", default=False,
893
637
help="Run self-test")
894
parser.add_option("--debug", action="store_true",
895
help="Debug mode; run in foreground and log to"
896
" terminal")
897
parser.add_option("--priority", type="string", help="GnuTLS"
898
" priority string (see GnuTLS documentation)")
899
parser.add_option("--servicename", type="string", metavar="NAME",
900
help="Zeroconf service name")
901
parser.add_option("--configdir", type="string",
902
default="/etc/mandos", metavar="DIR",
903
help="Directory to search for configuration"
904
" files")
905
options = parser.parse_args()[0]
638
parser.add_option("--debug", action="store_true", default=False,
639
help="Debug mode")
640
parser.add_option("--priority", type="string",
641
default="SECURE256",
642
help="GnuTLS priority string"
643
" (see GnuTLS documentation)")
644
parser.add_option("--servicename", type="string",
645
default="Mandos", help="Zeroconf service name")
646
(options, args) = parser.parse_args()
906
647
907
648
if options.check:
908
649
import doctest
909
650
doctest.testmod()
910
651
sys.exit()
911
652
912
# Default values for config file for server-global settings
913
server_defaults = { "interface": "",
914
"address": "",
915
"port": "",
916
"debug": "False",
917
"priority":
918
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
919
"servicename": "Mandos",
920
}
921
922
# Parse config file for server-global settings
923
server_config = ConfigParser.SafeConfigParser(server_defaults)
924
del server_defaults
925
server_config.read(os.path.join(options.configdir, "mandos.conf"))
926
# Convert the SafeConfigParser object to a dict
927
server_settings = server_config.defaults()
928
# Use getboolean on the boolean config option
929
server_settings["debug"] = (server_config.getboolean
930
("DEFAULT", "debug"))
931
del server_config
932
933
# Override the settings from the config file with command line
934
# options, if set.
935
for option in ("interface", "address", "port", "debug",
936
"priority", "servicename", "configdir"):
937
value = getattr(options, option)
938
if value is not None:
939
server_settings[option] = value
940
del options
941
# Now we have our good server settings in "server_settings"
942
943
debug = server_settings["debug"]
944
945
if not debug:
946
syslogger.setLevel(logging.WARNING)
947
console.setLevel(logging.WARNING)
948
949
if server_settings["servicename"] != "Mandos":
950
syslogger.setFormatter(logging.Formatter
951
('Mandos (%s): %%(levelname)s:'
952
' %%(message)s'
953
% server_settings["servicename"]))
954
955
# Parse config file with clients
956
client_defaults = { "timeout": "1h",
957
"interval": "5m",
958
"checker": "fping -q -- %(host)s",
959
"host": "",
960
}
961
client_config = ConfigParser.SafeConfigParser(client_defaults)
962
client_config.read(os.path.join(server_settings["configdir"],
963
"clients.conf"))
964
965
clients = Set()
966
tcp_server = IPv6_TCPServer((server_settings["address"],
967
server_settings["port"]),
968
TCP_handler,
969
settings=server_settings,
970
clients=clients)
971
pidfilename = "/var/run/mandos.pid"
972
try:
973
pidfile = open(pidfilename, "w")
974
except IOError, error:
975
logger.error("Could not open file %r", pidfilename)
976
977
try:
978
uid = pwd.getpwnam("_mandos").pw_uid
979
except KeyError:
980
try:
981
uid = pwd.getpwnam("mandos").pw_uid
982
except KeyError:
983
try:
984
uid = pwd.getpwnam("nobody").pw_uid
985
except KeyError:
986
uid = 65534
987
try:
988
gid = pwd.getpwnam("_mandos").pw_gid
989
except KeyError:
990
try:
991
gid = pwd.getpwnam("mandos").pw_gid
992
except KeyError:
993
try:
994
gid = pwd.getpwnam("nogroup").pw_gid
995
except KeyError:
996
gid = 65534
997
try:
998
os.setuid(uid)
999
os.setgid(gid)
1000
except OSError, error:
1001
if error[0] != errno.EPERM:
1002
raise error
1003
1004
global service
1005
service = AvahiService(name = server_settings["servicename"],
1006
servicetype = "_mandos._tcp", )
1007
if server_settings["interface"]:
1008
service.interface = (if_nametoindex
1009
(server_settings["interface"]))
653
# Parse config file
654
defaults = { "timeout": "1h",
655
"interval": "5m",
656
"checker": "fping -q -- %%(fqdn)s",
657
}
658
client_config = ConfigParser.SafeConfigParser(defaults)
659
#client_config.readfp(open("global.conf"), "global.conf")
660
client_config.read("mandos-clients.conf")
661
662
global serviceName
663
serviceName = options.servicename;
1010
664
1011
665
global main_loop
1012
666
global bus
1015
669
DBusGMainLoop(set_as_default=True )
1016
670
main_loop = gobject.MainLoop()
1017
671
bus = dbus.SystemBus()
1018
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1019
avahi.DBUS_PATH_SERVER),
1020
avahi.DBUS_INTERFACE_SERVER)
672
server = dbus.Interface(
673
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
674
avahi.DBUS_INTERFACE_SERVER )
1021
675
# End of Avahi example code
1022
bus_name = dbus.service.BusName(u"org.mandos-system.Mandos", bus)
1023
1024
clients.update(Set(Client(name = section,
1025
config
1026
= dict(client_config.items(section)))
676
677
debug = options.debug
678
679
if debug:
680
console = logging.StreamHandler()
681
# console.setLevel(logging.DEBUG)
682
console.setFormatter(logging.Formatter\
683
('%(levelname)s: %(message)s'))
684
logger.addHandler(console)
685
del console
686
687
clients = Set()
688
def remove_from_clients(client):
689
clients.remove(client)
690
if not clients:
691
logger.debug(u"No clients left, exiting")
692
killme()
693
694
clients.update(Set(Client(name=section,
695
stop_hook = remove_from_clients,
696
**(dict(client_config\
697
.items(section))))
1027
698
for section in client_config.sections()))
1028
if not clients:
1029
logger.critical(u"No clients defined")
1030
sys.exit(1)
1031
1032
if debug:
1033
# Redirect stdin so all checkers get /dev/null
1034
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1035
os.dup2(null, sys.stdin.fileno())
1036
if null > 2:
1037
os.close(null)
1038
else:
1039
# No console logging
1040
logger.removeHandler(console)
1041
# Close all input and output, do double fork, etc.
1042
daemon()
1043
1044
try:
1045
pid = os.getpid()
1046
pidfile.write(str(pid) + "\n")
1047
pidfile.close()
1048
del pidfile
1049
except IOError:
1050
logger.error(u"Could not write to file %r with PID %d",
1051
pidfilename, pid)
1052
except NameError:
1053
# "pidfile" was never created
1054
pass
1055
del pidfilename
699
700
if not debug:
701
daemon(False, False)
1056
702
1057
703
def cleanup():
1058
704
"Cleanup function; run on exit"
1065
711
1066
712
while clients:
1067
713
client = clients.pop()
1068
client.disable_hook = None
1069
client.disable()
714
client.stop_hook = None
715
client.stop()
1070
716
1071
717
atexit.register(cleanup)
1072
718
1073
719
if not debug:
1074
720
signal.signal(signal.SIGINT, signal.SIG_IGN)
1075
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1076
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1077
1078
class MandosServer(dbus.service.Object):
1079
"""A D-Bus proxy object"""
1080
def __init__(self):
1081
dbus.service.Object.__init__(self, bus,
1082
"/Mandos")
1083
_interface = u"org.mandos_system.Mandos"
1084
1085
@dbus.service.signal(_interface, signature="oa{sv}")
1086
def ClientAdded(self, objpath, properties):
1087
"D-Bus signal"
1088
pass
1089
1090
@dbus.service.signal(_interface, signature="o")
1091
def ClientRemoved(self, objpath):
1092
"D-Bus signal"
1093
pass
1094
1095
@dbus.service.method(_interface, out_signature="ao")
1096
def GetAllClients(self):
1097
return dbus.Array(c.dbus_object_path for c in clients)
1098
1099
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1100
def GetAllClientsWithProperties(self):
1101
return dbus.Dictionary(
1102
((c.dbus_object_path, c.GetAllProperties())
1103
for c in clients),
1104
signature="oa{sv}")
1105
1106
@dbus.service.method(_interface, in_signature="o")
1107
def RemoveClient(self, object_path):
1108
for c in clients:
1109
if c.dbus_object_path == object_path:
1110
c.disable()
1111
clients.remove(c)
1112
return
1113
raise KeyError
1114
1115
del _interface
1116
1117
mandos_server = MandosServer()
721
signal.signal(signal.SIGHUP, lambda signum, frame: killme())
722
signal.signal(signal.SIGTERM, lambda signum, frame: killme())
1118
723
1119
724
for client in clients:
1120
# Emit D-Bus signal
1121
mandos_server.ClientAdded(client.dbus_object_path,
1122
client.GetAllProperties())
1123
client.enable()
1124
1125
tcp_server.enable()
1126
tcp_server.server_activate()
1127
1128
# Find out what port we got
1129
service.port = tcp_server.socket.getsockname()[1]
1130
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1131
u" scope_id %d" % tcp_server.socket.getsockname())
1132
1133
#service.interface = tcp_server.socket.getsockname()[3]
1134
1135
try:
1136
# From the Avahi example code
1137
server.connect_to_signal("StateChanged", server_state_changed)
1138
try:
1139
server_state_changed(server.GetState())
1140
except dbus.exceptions.DBusException, error:
1141
logger.critical(u"DBusException: %s", error)
1142
sys.exit(1)
1143
# End of Avahi example code
1144
1145
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1146
lambda *args, **kwargs:
1147
(tcp_server.handle_request
1148
(*args[2:], **kwargs) or True))
1149
1150
logger.debug(u"Starting main loop")
725
client.start()
726
727
tcp_server = IPv6_TCPServer((options.address, options.port),
728
tcp_handler,
729
options=options,
730
clients=clients)
731
# Find out what random port we got
732
global servicePort
733
servicePort = tcp_server.socket.getsockname()[1]
734
logger.debug(u"Now listening on port %d", servicePort)
735
736
if options.interface is not None:
737
global serviceInterface
738
serviceInterface = if_nametoindex(options.interface)
739
740
# From the Avahi example code
741
server.connect_to_signal("StateChanged", server_state_changed)
742
try:
743
server_state_changed(server.GetState())
744
except dbus.exceptions.DBusException, error:
745
logger.critical(u"DBusException: %s", error)
746
killme(1)
747
# End of Avahi example code
748
749
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
750
lambda *args, **kwargs:
751
tcp_server.handle_request(*args[2:],
752
**kwargs) or True)
753
try:
754
logger.debug("Starting main loop")
755
main_loop_started = True
1151
756
main_loop.run()
1152
except AvahiError, error:
1153
logger.critical(u"AvahiError: %s" + unicode(error))
1154
sys.exit(1)
1155
757
except KeyboardInterrupt:
1156
758
if debug:
1157
759
print
760
761
sys.exit(exitstatus)
1158
762
1159
763
if __name__ == '__main__':
1160
764
main()
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0