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- Committer: Teddy Hogeborn
- Date: 2008-08-01 07:04:32 UTC
- Revision ID: teddy@fukt.bsnet.se-20080801070432-5t1q0ds0bjxojyoz
* plugins.d/plugbasedclient.c (main): Close the pipe fd after dup2:ing
it onto stdout.
it onto stdout.
- files added:
- ca.pem
- files removed:
- .bzr-builddeb
- debian
- debian/po
- files renamed:
- plugin-runner.c => plugbasedclient.c
- plugins.d/mandos-client.c => plugins.d/mandosclient.c
- plugins.d/password-prompt.c => plugins.d/passprompt.c
- mandos.conf => server.conf
- mandos => server.py
- files modified:
- Makefile
added
removed
server.py
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6
# This program is partly derived from an example program for an Avahi
7
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# service publisher, downloaded from
8
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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: "AvahiService.add", "AvahiService.remove",
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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 © 2008,2009 Teddy Hogeborn
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# Copyright © 2008,2009 Björn Påhlsson
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# Copyright © 2007-2008 Teddy Hogeborn & Björn 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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#
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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 optparse
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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 gnutls.crypto
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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 = "1.0.5"
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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 a connecting client acts
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# as a TLS "server". The client (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"))
75
syslogger.setFormatter(logging.Formatter
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('Mandos: %(levelname)s: %(message)s'))
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syslogger = logging.handlers.SysLogHandler\
78
(facility = logging.handlers.SysLogHandler.LOG_DAEMON)
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syslogger.setFormatter(logging.Formatter\
80
('%(levelname)s: %(message)s'))
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logger.addHandler(syslogger)
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del 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, *args, **kwargs):
86
def __init__(self, value):
86
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self.value = value
87
super(AvahiError, self).__init__(value, *args, **kwargs)
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def __unicode__(self):
89
return unicode(repr(self.value))
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def __str__(self):
89
return repr(self.value)
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class AvahiServiceError(AvahiError):
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pass
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class AvahiService(object):
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"""An Avahi (Zeroconf) service.
100
Attributes:
99
"""
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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
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a sensible number of times
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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 to localhost
109
if empty.
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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
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113
"""
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def __init__(self, interface = avahi.IF_UNSPEC, name = None,
115
servicetype = None, port = None, TXT = None,
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domain = "", host = "", max_renames = 32768):
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type = None, port = None, TXT = None, domain = "",
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host = "", max_renames = 12):
117
"""An Avahi (Zeroconf) service. """
117
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self.interface = interface
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self.name = name
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self.type = servicetype
120
self.type = type
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121
self.port = port
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self.TXT = TXT if TXT is not None else []
122
if TXT is None:
123
self.TXT = []
124
else:
125
self.TXT = TXT
122
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self.domain = domain
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127
self.host = host
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128
self.rename_count = 0
125
self.max_renames = max_renames
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def rename(self):
127
130
"""Derived from the Avahi example code"""
128
131
if self.rename_count >= self.max_renames:
129
logger.critical(u"No suitable Zeroconf service name found"
130
u" after %i retries, exiting.",
131
self.rename_count)
132
raise AvahiServiceError(u"Too many renames")
133
self.name = server.GetAlternativeServiceName(self.name)
134
logger.info(u"Changing Zeroconf service name to %r ...",
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str(self.name))
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syslogger.setFormatter(logging.Formatter
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('Mandos (%s): %%(levelname)s:'
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' %%(message)s' % self.name))
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logger.critical(u"No suitable service name found after %i"
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u" retries, exiting.", rename_count)
134
raise AvahiServiceError("Too many renames")
135
name = server.GetAlternativeServiceName(name)
136
logger.notice(u"Changing name to %r ...", 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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"""Derived from the Avahi example code"""
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global group
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if group is None:
150
group = dbus.Interface(bus.get_object
151
(avahi.DBUS_NAME,
148
group = dbus.Interface\
149
(bus.get_object(avahi.DBUS_NAME,
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150
server.EntryGroupNew()),
153
avahi.DBUS_INTERFACE_ENTRY_GROUP)
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avahi.DBUS_INTERFACE_ENTRY_GROUP)
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group.connect_to_signal('StateChanged',
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153
entry_group_state_changed)
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logger.debug(u"Adding Zeroconf service '%s' of type '%s' ...",
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logger.debug(u"Adding service '%s' of type '%s' ...",
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service.name, service.type)
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group.AddService(
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self.interface, # interface
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# End of Avahi example code
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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)
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class Client(dbus.service.Object):
171
class Client(object):
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"""A representation of a client host served by this server.
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173
Attributes:
181
name: string; from the config file, used in log messages and
182
D-Bus identifiers
174
name: string; from the config file, used in log messages
183
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fingerprint: string (40 or 32 hexadecimal digits); used to
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uniquely identify the client
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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
191
timeout: datetime.timedelta(); How long from last_checked_ok
192
until this client is invalid
193
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)
195
checker: subprocess.Popen(); a running checker process used
196
to see if the client lives.
197
'None' if no process is running.
177
secret: bytestring; sent verbatim (over TLS) to client
178
fqdn: string (FQDN); available for use by the checker command
179
created: datetime.datetime(); object creation, not client host
180
last_checked_ok: datetime.datetime() or None if not yet checked OK
181
timeout: datetime.timedelta(); How long from last_checked_ok
182
until this client is invalid
183
interval: datetime.timedelta(); How often to start a new checker
184
stop_hook: If set, called by stop() as stop_hook(self)
185
checker: subprocess.Popen(); a running checker process used
186
to see if the client lives.
187
'None' if no process is running.
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checker_initiator_tag: a gobject event source tag, or None
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disable_initiator_tag: - '' -
189
stop_initiator_tag: - '' -
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checker_callback_tag: - '' -
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checker_command: string; External command which is run to check if
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192
client lives. %() expansions are done at
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193
runtime with vars(self) as dict, so that for
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194
instance %(name)s can be used in the command.
205
use_dbus: bool(); Whether to provide D-Bus interface and signals
206
dbus_object_path: dbus.ObjectPath ; only set if self.use_dbus
195
Private attibutes:
196
_timeout: Real variable for 'timeout'
197
_interval: Real variable for 'interval'
198
_timeout_milliseconds: Used when calling gobject.timeout_add()
199
_interval_milliseconds: - '' -
207
200
"""
208
def timeout_milliseconds(self):
209
"Return the 'timeout' attribute in milliseconds"
210
return ((self.timeout.days * 24 * 60 * 60 * 1000)
211
+ (self.timeout.seconds * 1000)
212
+ (self.timeout.microseconds // 1000))
213
214
def interval_milliseconds(self):
215
"Return the 'interval' attribute in milliseconds"
216
return ((self.interval.days * 24 * 60 * 60 * 1000)
217
+ (self.interval.seconds * 1000)
218
+ (self.interval.microseconds // 1000))
219
220
def __init__(self, name = None, disable_hook=None, config=None,
221
use_dbus=True):
222
"""Note: the 'checker' key in 'config' sets the
223
'checker_command' attribute and *not* the 'checker'
224
attribute."""
201
def _set_timeout(self, timeout):
202
"Setter function for 'timeout' attribute"
203
self._timeout = timeout
204
self._timeout_milliseconds = ((self.timeout.days
205
* 24 * 60 * 60 * 1000)
206
+ (self.timeout.seconds * 1000)
207
+ (self.timeout.microseconds
208
// 1000))
209
timeout = property(lambda self: self._timeout,
210
_set_timeout)
211
del _set_timeout
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def _set_interval(self, interval):
213
"Setter function for 'interval' attribute"
214
self._interval = interval
215
self._interval_milliseconds = ((self.interval.days
216
* 24 * 60 * 60 * 1000)
217
+ (self.interval.seconds
218
* 1000)
219
+ (self.interval.microseconds
220
// 1000))
221
interval = property(lambda self: self._interval,
222
_set_interval)
223
del _set_interval
224
def __init__(self, name=None, stop_hook=None, fingerprint=None,
225
secret=None, secfile=None, fqdn=None, timeout=None,
226
interval=-1, checker=None):
227
"""Note: the 'checker' argument sets the 'checker_command'
228
attribute and not the 'checker' attribute.."""
225
229
self.name = name
226
if config is None:
227
config = {}
228
230
logger.debug(u"Creating client %r", self.name)
229
self.use_dbus = False # During __init__
230
# Uppercase and remove spaces from fingerprint for later
231
# comparison purposes with return value from the fingerprint()
232
# function
233
self.fingerprint = (config["fingerprint"].upper()
234
.replace(u" ", u""))
231
# Uppercase and remove spaces from fingerprint
232
# for later comparison purposes with return value of
233
# the fingerprint() function
234
self.fingerprint = fingerprint.upper().replace(u" ", u"")
235
235
logger.debug(u" Fingerprint: %s", self.fingerprint)
236
if "secret" in config:
237
self.secret = config["secret"].decode(u"base64")
238
elif "secfile" in config:
239
with closing(open(os.path.expanduser
240
(os.path.expandvars
241
(config["secfile"])))) as secfile:
242
self.secret = secfile.read()
236
if secret:
237
self.secret = secret.decode(u"base64")
238
elif secfile:
239
sf = open(secfile)
240
self.secret = sf.read()
241
sf.close()
243
242
else:
244
243
raise TypeError(u"No secret or secfile for client %s"
245
244
% self.name)
246
self.host = config.get("host", "")
247
self.created = datetime.datetime.utcnow()
248
self.enabled = False
249
self.last_enabled = None
245
self.fqdn = fqdn
246
self.created = datetime.datetime.now()
250
247
self.last_checked_ok = None
251
self.timeout = string_to_delta(config["timeout"])
252
self.interval = string_to_delta(config["interval"])
253
self.disable_hook = disable_hook
248
self.timeout = string_to_delta(timeout)
249
self.interval = string_to_delta(interval)
250
self.stop_hook = stop_hook
254
251
self.checker = None
255
252
self.checker_initiator_tag = None
256
self.disable_initiator_tag = None
253
self.stop_initiator_tag = None
257
254
self.checker_callback_tag = None
258
self.checker_command = config["checker"]
259
self.last_connect = None
260
# Only now, when this client is initialized, can it show up on
261
# the D-Bus
262
self.use_dbus = use_dbus
263
if self.use_dbus:
264
self.dbus_object_path = (dbus.ObjectPath
265
("/clients/"
266
+ self.name.replace(".", "_")))
267
dbus.service.Object.__init__(self, bus,
268
self.dbus_object_path)
269
270
def enable(self):
255
self.check_command = checker
256
def start(self):
271
257
"""Start this client's checker and timeout hooks"""
272
self.last_enabled = datetime.datetime.utcnow()
273
258
# Schedule a new checker to be started an 'interval' from now,
274
259
# and every interval from then on.
275
self.checker_initiator_tag = (gobject.timeout_add
276
(self.interval_milliseconds(),
277
self.start_checker))
260
self.checker_initiator_tag = gobject.timeout_add\
261
(self._interval_milliseconds,
262
self.start_checker)
278
263
# Also start a new checker *right now*.
279
264
self.start_checker()
280
# Schedule a disable() when 'timeout' has passed
281
self.disable_initiator_tag = (gobject.timeout_add
282
(self.timeout_milliseconds(),
283
self.disable))
284
self.enabled = True
285
if self.use_dbus:
286
# Emit D-Bus signals
287
self.PropertyChanged(dbus.String(u"enabled"),
288
dbus.Boolean(True, variant_level=1))
289
self.PropertyChanged(dbus.String(u"last_enabled"),
290
(_datetime_to_dbus(self.last_enabled,
291
variant_level=1)))
292
293
def disable(self):
294
"""Disable this client."""
295
if not getattr(self, "enabled", False):
265
# Schedule a stop() when 'timeout' has passed
266
self.stop_initiator_tag = gobject.timeout_add\
267
(self._timeout_milliseconds,
268
self.stop)
269
def stop(self):
270
"""Stop this client.
271
The possibility that a client might be restarted is left open,
272
but not currently used."""
273
# If this client doesn't have a secret, it is already stopped.
274
if self.secret:
275
logger.debug(u"Stopping client %s", self.name)
276
self.secret = None
277
else:
296
278
return False
297
logger.info(u"Disabling client %s", self.name)
298
if getattr(self, "disable_initiator_tag", False):
299
gobject.source_remove(self.disable_initiator_tag)
300
self.disable_initiator_tag = None
279
if getattr(self, "stop_initiator_tag", False):
280
gobject.source_remove(self.stop_initiator_tag)
281
self.stop_initiator_tag = None
301
282
if getattr(self, "checker_initiator_tag", False):
302
283
gobject.source_remove(self.checker_initiator_tag)
303
284
self.checker_initiator_tag = None
304
285
self.stop_checker()
305
if self.disable_hook:
306
self.disable_hook(self)
307
self.enabled = False
308
if self.use_dbus:
309
# Emit D-Bus signal
310
self.PropertyChanged(dbus.String(u"enabled"),
311
dbus.Boolean(False, variant_level=1))
286
if self.stop_hook:
287
self.stop_hook(self)
312
288
# Do not run this again if called by a gobject.timeout_add
313
289
return False
314
315
290
def __del__(self):
316
self.disable_hook = None
317
self.disable()
318
319
def checker_callback(self, pid, condition, command):
291
self.stop_hook = None
292
self.stop()
293
def checker_callback(self, pid, condition):
320
294
"""The checker has completed, so take appropriate actions."""
295
now = datetime.datetime.now()
321
296
self.checker_callback_tag = None
322
297
self.checker = None
323
if self.use_dbus:
324
# Emit D-Bus signal
325
self.PropertyChanged(dbus.String(u"checker_running"),
326
dbus.Boolean(False, variant_level=1))
327
if os.WIFEXITED(condition):
328
exitstatus = os.WEXITSTATUS(condition)
329
if exitstatus == 0:
330
logger.info(u"Checker for %(name)s succeeded",
331
vars(self))
332
self.checked_ok()
333
else:
334
logger.info(u"Checker for %(name)s failed",
335
vars(self))
336
if self.use_dbus:
337
# Emit D-Bus signal
338
self.CheckerCompleted(dbus.Int16(exitstatus),
339
dbus.Int64(condition),
340
dbus.String(command))
341
else:
298
if os.WIFEXITED(condition) \
299
and (os.WEXITSTATUS(condition) == 0):
300
logger.debug(u"Checker for %(name)s succeeded",
301
vars(self))
302
self.last_checked_ok = now
303
gobject.source_remove(self.stop_initiator_tag)
304
self.stop_initiator_tag = gobject.timeout_add\
305
(self._timeout_milliseconds,
306
self.stop)
307
elif not os.WIFEXITED(condition):
342
308
logger.warning(u"Checker for %(name)s crashed?",
343
309
vars(self))
344
if self.use_dbus:
345
# Emit D-Bus signal
346
self.CheckerCompleted(dbus.Int16(-1),
347
dbus.Int64(condition),
348
dbus.String(command))
349
350
def checked_ok(self):
351
"""Bump up the timeout for this client.
352
This should only be called when the client has been seen,
353
alive and well.
354
"""
355
self.last_checked_ok = datetime.datetime.utcnow()
356
gobject.source_remove(self.disable_initiator_tag)
357
self.disable_initiator_tag = (gobject.timeout_add
358
(self.timeout_milliseconds(),
359
self.disable))
360
if self.use_dbus:
361
# Emit D-Bus signal
362
self.PropertyChanged(
363
dbus.String(u"last_checked_ok"),
364
(_datetime_to_dbus(self.last_checked_ok,
365
variant_level=1)))
366
310
else:
311
logger.debug(u"Checker for %(name)s failed",
312
vars(self))
367
313
def start_checker(self):
368
314
"""Start a new checker subprocess if one is not running.
369
315
If a checker already exists, leave it running and do
378
324
# is as it should be.
379
325
if self.checker is None:
380
326
try:
381
# In case checker_command has exactly one % operator
382
command = self.checker_command % self.host
327
# In case check_command has exactly one % operator
328
command = self.check_command % self.fqdn
383
329
except TypeError:
384
330
# Escape attributes for the shell
385
331
escaped_attrs = dict((key, re.escape(str(val)))
386
332
for key, val in
387
333
vars(self).iteritems())
388
334
try:
389
command = self.checker_command % escaped_attrs
335
command = self.check_command % escaped_attrs
390
336
except TypeError, error:
391
337
logger.error(u'Could not format string "%s":'
392
u' %s', self.checker_command, error)
338
u' %s', self.check_command, error)
393
339
return True # Try again later
394
340
try:
395
logger.info(u"Starting checker %r for %s",
396
command, self.name)
397
# We don't need to redirect stdout and stderr, since
398
# in normal mode, that is already done by daemon(),
399
# and in debug mode we don't want to. (Stdin is
400
# always replaced by /dev/null.)
341
logger.debug(u"Starting checker %r for %s",
342
command, self.name)
401
343
self.checker = subprocess.Popen(command,
402
344
close_fds=True,
403
345
shell=True, cwd="/")
404
if self.use_dbus:
405
# Emit D-Bus signal
406
self.CheckerStarted(command)
407
self.PropertyChanged(
408
dbus.String("checker_running"),
409
dbus.Boolean(True, variant_level=1))
410
self.checker_callback_tag = (gobject.child_watch_add
411
(self.checker.pid,
412
self.checker_callback,
413
data=command))
414
except OSError, error:
346
self.checker_callback_tag = gobject.child_watch_add\
347
(self.checker.pid,
348
self.checker_callback)
349
except subprocess.OSError, error:
415
350
logger.error(u"Failed to start subprocess: %s",
416
351
error)
417
352
# Re-run this periodically if run by gobject.timeout_add
418
353
return True
419
420
354
def stop_checker(self):
421
355
"""Force the checker process, if any, to stop."""
422
356
if self.checker_callback_tag:
424
358
self.checker_callback_tag = None
425
359
if getattr(self, "checker", None) is None:
426
360
return
427
logger.debug(u"Stopping checker for %(name)s", vars(self))
361
logger.debug("Stopping checker for %(name)s", vars(self))
428
362
try:
429
363
os.kill(self.checker.pid, signal.SIGTERM)
430
364
#os.sleep(0.5)
434
368
if error.errno != errno.ESRCH: # No such process
435
369
raise
436
370
self.checker = None
437
if self.use_dbus:
438
self.PropertyChanged(dbus.String(u"checker_running"),
439
dbus.Boolean(False, variant_level=1))
440
441
371
def still_valid(self):
442
372
"""Has the timeout not yet passed for this client?"""
443
if not getattr(self, "enabled", False):
444
return False
445
now = datetime.datetime.utcnow()
373
now = datetime.datetime.now()
446
374
if self.last_checked_ok is None:
447
375
return now < (self.created + self.timeout)
448
376
else:
449
377
return now < (self.last_checked_ok + self.timeout)
450
451
## D-Bus methods & signals
452
_interface = u"se.bsnet.fukt.Mandos.Client"
453
454
# CheckedOK - method
455
CheckedOK = dbus.service.method(_interface)(checked_ok)
456
CheckedOK.__name__ = "CheckedOK"
457
458
# CheckerCompleted - signal
459
@dbus.service.signal(_interface, signature="nxs")
460
def CheckerCompleted(self, exitcode, waitstatus, command):
461
"D-Bus signal"
462
pass
463
464
# CheckerStarted - signal
465
@dbus.service.signal(_interface, signature="s")
466
def CheckerStarted(self, command):
467
"D-Bus signal"
468
pass
469
470
# GetAllProperties - method
471
@dbus.service.method(_interface, out_signature="a{sv}")
472
def GetAllProperties(self):
473
"D-Bus method"
474
return dbus.Dictionary({
475
dbus.String("name"):
476
dbus.String(self.name, variant_level=1),
477
dbus.String("fingerprint"):
478
dbus.String(self.fingerprint, variant_level=1),
479
dbus.String("host"):
480
dbus.String(self.host, variant_level=1),
481
dbus.String("created"):
482
_datetime_to_dbus(self.created, variant_level=1),
483
dbus.String("last_enabled"):
484
(_datetime_to_dbus(self.last_enabled,
485
variant_level=1)
486
if self.last_enabled is not None
487
else dbus.Boolean(False, variant_level=1)),
488
dbus.String("enabled"):
489
dbus.Boolean(self.enabled, variant_level=1),
490
dbus.String("last_checked_ok"):
491
(_datetime_to_dbus(self.last_checked_ok,
492
variant_level=1)
493
if self.last_checked_ok is not None
494
else dbus.Boolean (False, variant_level=1)),
495
dbus.String("timeout"):
496
dbus.UInt64(self.timeout_milliseconds(),
497
variant_level=1),
498
dbus.String("interval"):
499
dbus.UInt64(self.interval_milliseconds(),
500
variant_level=1),
501
dbus.String("checker"):
502
dbus.String(self.checker_command,
503
variant_level=1),
504
dbus.String("checker_running"):
505
dbus.Boolean(self.checker is not None,
506
variant_level=1),
507
dbus.String("object_path"):
508
dbus.ObjectPath(self.dbus_object_path,
509
variant_level=1)
510
}, signature="sv")
511
512
# IsStillValid - method
513
IsStillValid = (dbus.service.method(_interface, out_signature="b")
514
(still_valid))
515
IsStillValid.__name__ = "IsStillValid"
516
517
# PropertyChanged - signal
518
@dbus.service.signal(_interface, signature="sv")
519
def PropertyChanged(self, property, value):
520
"D-Bus signal"
521
pass
522
523
# SetChecker - method
524
@dbus.service.method(_interface, in_signature="s")
525
def SetChecker(self, checker):
526
"D-Bus setter method"
527
self.checker_command = checker
528
# Emit D-Bus signal
529
self.PropertyChanged(dbus.String(u"checker"),
530
dbus.String(self.checker_command,
531
variant_level=1))
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
# Emit D-Bus signal
539
self.PropertyChanged(dbus.String(u"host"),
540
dbus.String(self.host, variant_level=1))
541
542
# SetInterval - method
543
@dbus.service.method(_interface, in_signature="t")
544
def SetInterval(self, milliseconds):
545
self.interval = datetime.timedelta(0, 0, 0, milliseconds)
546
# Emit D-Bus signal
547
self.PropertyChanged(dbus.String(u"interval"),
548
(dbus.UInt64(self.interval_milliseconds(),
549
variant_level=1)))
550
551
# SetSecret - method
552
@dbus.service.method(_interface, in_signature="ay",
553
byte_arrays=True)
554
def SetSecret(self, secret):
555
"D-Bus setter method"
556
self.secret = str(secret)
557
558
# SetTimeout - method
559
@dbus.service.method(_interface, in_signature="t")
560
def SetTimeout(self, milliseconds):
561
self.timeout = datetime.timedelta(0, 0, 0, milliseconds)
562
# Emit D-Bus signal
563
self.PropertyChanged(dbus.String(u"timeout"),
564
(dbus.UInt64(self.timeout_milliseconds(),
565
variant_level=1)))
566
567
# Enable - method
568
Enable = dbus.service.method(_interface)(enable)
569
Enable.__name__ = "Enable"
570
571
# StartChecker - method
572
@dbus.service.method(_interface)
573
def StartChecker(self):
574
"D-Bus method"
575
self.start_checker()
576
577
# Disable - method
578
@dbus.service.method(_interface)
579
def Disable(self):
580
"D-Bus method"
581
self.disable()
582
583
# StopChecker - method
584
StopChecker = dbus.service.method(_interface)(stop_checker)
585
StopChecker.__name__ = "StopChecker"
586
587
del _interface
588
378
589
379
590
380
def peer_certificate(session):
591
381
"Return the peer's OpenPGP certificate as a bytestring"
592
382
# If not an OpenPGP certificate...
593
if (gnutls.library.functions
594
.gnutls_certificate_type_get(session._c_object)
595
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
383
if gnutls.library.functions.gnutls_certificate_type_get\
384
(session._c_object) \
385
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP:
596
386
# ...do the normal thing
597
387
return session.peer_certificate
598
list_size = ctypes.c_uint(1)
599
cert_list = (gnutls.library.functions
600
.gnutls_certificate_get_peers
601
(session._c_object, ctypes.byref(list_size)))
602
if not bool(cert_list) and list_size.value != 0:
603
raise gnutls.errors.GNUTLSError("error getting peer"
604
" certificate")
388
list_size = ctypes.c_uint()
389
cert_list = gnutls.library.functions.gnutls_certificate_get_peers\
390
(session._c_object, ctypes.byref(list_size))
605
391
if list_size.value == 0:
606
392
return None
607
393
cert = cert_list[0]
610
396
611
397
def fingerprint(openpgp):
612
398
"Convert an OpenPGP bytestring to a hexdigit fingerprint string"
613
# New GnuTLS "datum" with the OpenPGP public key
614
datum = (gnutls.library.types
615
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
616
ctypes.POINTER
617
(ctypes.c_ubyte)),
618
ctypes.c_uint(len(openpgp))))
619
399
# New empty GnuTLS certificate
620
400
crt = gnutls.library.types.gnutls_openpgp_crt_t()
621
(gnutls.library.functions
622
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
401
gnutls.library.functions.gnutls_openpgp_crt_init\
402
(ctypes.byref(crt))
403
# New GnuTLS "datum" with the OpenPGP public key
404
datum = gnutls.library.types.gnutls_datum_t\
405
(ctypes.cast(ctypes.c_char_p(openpgp),
406
ctypes.POINTER(ctypes.c_ubyte)),
407
ctypes.c_uint(len(openpgp)))
623
408
# Import the OpenPGP public key into the certificate
624
(gnutls.library.functions
625
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
626
gnutls.library.constants
627
.GNUTLS_OPENPGP_FMT_RAW))
628
# Verify the self signature in the key
629
crtverify = ctypes.c_uint()
630
(gnutls.library.functions
631
.gnutls_openpgp_crt_verify_self(crt, 0, ctypes.byref(crtverify)))
632
if crtverify.value != 0:
633
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
634
raise gnutls.errors.CertificateSecurityError("Verify failed")
409
ret = gnutls.library.functions.gnutls_openpgp_crt_import\
410
(crt,
411
ctypes.byref(datum),
412
gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)
635
413
# New buffer for the fingerprint
636
buf = ctypes.create_string_buffer(20)
637
buf_len = ctypes.c_size_t()
414
buffer = ctypes.create_string_buffer(20)
415
buffer_length = ctypes.c_size_t()
638
416
# Get the fingerprint from the certificate into the buffer
639
(gnutls.library.functions
640
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
641
ctypes.byref(buf_len)))
417
gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint\
418
(crt, ctypes.byref(buffer), ctypes.byref(buffer_length))
642
419
# Deinit the certificate
643
420
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
644
421
# Convert the buffer to a Python bytestring
645
fpr = ctypes.string_at(buf, buf_len.value)
422
fpr = ctypes.string_at(buffer, buffer_length.value)
646
423
# Convert the bytestring to hexadecimal notation
647
424
hex_fpr = u''.join(u"%02X" % ord(char) for char in fpr)
648
425
return hex_fpr
649
426
650
427
651
class TCP_handler(SocketServer.BaseRequestHandler, object):
428
class tcp_handler(SocketServer.BaseRequestHandler, object):
652
429
"""A TCP request handler class.
653
430
Instantiated by IPv6_TCPServer for each request to handle it.
654
431
Note: This will run in its own forked process."""
655
432
656
433
def handle(self):
657
logger.info(u"TCP connection from: %s",
658
unicode(self.client_address))
659
session = (gnutls.connection
660
.ClientSession(self.request,
661
gnutls.connection
662
.X509Credentials()))
663
664
line = self.request.makefile().readline()
665
logger.debug(u"Protocol version: %r", line)
666
try:
667
if int(line.strip().split()[0]) > 1:
668
raise RuntimeError
669
except (ValueError, IndexError, RuntimeError), error:
670
logger.error(u"Unknown protocol version: %s", error)
671
return
672
434
logger.debug(u"TCP connection from: %s",
435
unicode(self.client_address))
436
session = gnutls.connection.ClientSession\
437
(self.request, gnutls.connection.X509Credentials())
673
438
# Note: gnutls.connection.X509Credentials is really a generic
674
439
# GnuTLS certificate credentials object so long as no X.509
675
440
# keys are added to it. Therefore, we can use it here despite
678
443
#priority = ':'.join(("NONE", "+VERS-TLS1.1", "+AES-256-CBC",
679
444
# "+SHA1", "+COMP-NULL", "+CTYPE-OPENPGP",
680
445
# "+DHE-DSS"))
681
# Use a fallback default, since this MUST be set.
682
priority = self.server.settings.get("priority", "NORMAL")
683
(gnutls.library.functions
684
.gnutls_priority_set_direct(session._c_object,
685
priority, None))
446
priority = "NORMAL" # Fallback default, since this
447
# MUST be set.
448
if self.server.settings["priority"]:
449
priority = self.server.settings["priority"]
450
gnutls.library.functions.gnutls_priority_set_direct\
451
(session._c_object, priority, None);
686
452
687
453
try:
688
454
session.handshake()
689
455
except gnutls.errors.GNUTLSError, error:
690
logger.warning(u"Handshake failed: %s", error)
456
logger.debug(u"Handshake failed: %s", error)
691
457
# Do not run session.bye() here: the session is not
692
458
# established. Just abandon the request.
693
459
return
694
logger.debug(u"Handshake succeeded")
695
460
try:
696
461
fpr = fingerprint(peer_certificate(session))
697
462
except (TypeError, gnutls.errors.GNUTLSError), error:
698
logger.warning(u"Bad certificate: %s", error)
463
logger.debug(u"Bad certificate: %s", error)
699
464
session.bye()
700
465
return
701
466
logger.debug(u"Fingerprint: %s", fpr)
702
467
client = None
703
468
for c in self.server.clients:
704
469
if c.fingerprint == fpr:
705
470
client = c
706
471
break
707
else:
708
logger.warning(u"Client not found for fingerprint: %s",
709
fpr)
472
if not client:
473
logger.debug(u"Client not found for fingerprint: %s", fpr)
710
474
session.bye()
711
475
return
712
476
# Have to check if client.still_valid(), since it is possible
713
477
# that the client timed out while establishing the GnuTLS
714
478
# session.
715
479
if not client.still_valid():
716
logger.warning(u"Client %(name)s is invalid",
717
vars(client))
480
logger.debug(u"Client %(name)s is invalid", vars(client))
718
481
session.bye()
719
482
return
720
## This won't work here, since we're in a fork.
721
# client.checked_ok()
722
483
sent_size = 0
723
484
while sent_size < len(client.secret):
724
485
sent = session.send(client.secret[sent_size:])
729
490
session.bye()
730
491
731
492
732
class IPv6_TCPServer(SocketServer.ForkingMixIn,
733
SocketServer.TCPServer, object):
493
class IPv6_TCPServer(SocketServer.ForkingTCPServer, object):
734
494
"""IPv6 TCP server. Accepts 'None' as address and/or port.
735
495
Attributes:
736
496
settings: Server settings
737
497
clients: Set() of Client objects
738
enabled: Boolean; whether this server is activated yet
739
498
"""
740
499
address_family = socket.AF_INET6
741
500
def __init__(self, *args, **kwargs):
745
504
if "clients" in kwargs:
746
505
self.clients = kwargs["clients"]
747
506
del kwargs["clients"]
748
self.enabled = False
749
super(IPv6_TCPServer, self).__init__(*args, **kwargs)
507
return super(type(self), self).__init__(*args, **kwargs)
750
508
def server_bind(self):
751
509
"""This overrides the normal server_bind() function
752
510
to bind to an interface if one was specified, and also NOT to
760
518
self.settings["interface"])
761
519
except socket.error, error:
762
520
if error[0] == errno.EPERM:
763
logger.error(u"No permission to"
764
u" bind to interface %s",
765
self.settings["interface"])
521
logger.warning(u"No permission to"
522
u" bind to interface %s",
523
self.settings["interface"])
766
524
else:
767
525
raise error
768
526
# Only bind(2) the socket if we really need to.
771
529
in6addr_any = "::"
772
530
self.server_address = (in6addr_any,
773
531
self.server_address[1])
774
elif not self.server_address[1]:
532
elif self.server_address[1] is None:
775
533
self.server_address = (self.server_address[0],
776
534
0)
777
# if self.settings["interface"]:
778
# self.server_address = (self.server_address[0],
779
# 0, # port
780
# 0, # flowinfo
781
# if_nametoindex
782
# (self.settings
783
# ["interface"]))
784
return super(IPv6_TCPServer, self).server_bind()
785
def server_activate(self):
786
if self.enabled:
787
return super(IPv6_TCPServer, self).server_activate()
788
def enable(self):
789
self.enabled = True
535
return super(type(self), self).server_bind()
790
536
791
537
792
538
def string_to_delta(interval):
793
539
"""Parse a string and return a datetime.timedelta
794
540
795
541
>>> string_to_delta('7d')
796
542
datetime.timedelta(7)
797
543
>>> string_to_delta('60s')
802
548
datetime.timedelta(1)
803
549
>>> string_to_delta(u'1w')
804
550
datetime.timedelta(7)
805
>>> string_to_delta('5m 30s')
806
datetime.timedelta(0, 330)
807
551
"""
808
timevalue = datetime.timedelta(0)
809
for s in interval.split():
810
try:
811
suffix = unicode(s[-1])
812
value = int(s[:-1])
813
if suffix == u"d":
814
delta = datetime.timedelta(value)
815
elif suffix == u"s":
816
delta = datetime.timedelta(0, value)
817
elif suffix == u"m":
818
delta = datetime.timedelta(0, 0, 0, 0, value)
819
elif suffix == u"h":
820
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
821
elif suffix == u"w":
822
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
823
else:
824
raise ValueError
825
except (ValueError, IndexError):
552
try:
553
suffix=unicode(interval[-1])
554
value=int(interval[:-1])
555
if suffix == u"d":
556
delta = datetime.timedelta(value)
557
elif suffix == u"s":
558
delta = datetime.timedelta(0, value)
559
elif suffix == u"m":
560
delta = datetime.timedelta(0, 0, 0, 0, value)
561
elif suffix == u"h":
562
delta = datetime.timedelta(0, 0, 0, 0, 0, value)
563
elif suffix == u"w":
564
delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)
565
else:
826
566
raise ValueError
827
timevalue += delta
828
return timevalue
567
except (ValueError, IndexError):
568
raise ValueError
569
return delta
829
570
830
571
831
572
def server_state_changed(state):
832
573
"""Derived from the Avahi example code"""
833
574
if state == avahi.SERVER_COLLISION:
834
logger.error(u"Zeroconf server name collision")
575
logger.warning(u"Server name collision")
835
576
service.remove()
836
577
elif state == avahi.SERVER_RUNNING:
837
578
service.add()
839
580
840
581
def entry_group_state_changed(state, error):
841
582
"""Derived from the Avahi example code"""
842
logger.debug(u"Avahi state change: %i", state)
583
logger.debug(u"state change: %i", state)
843
584
844
585
if state == avahi.ENTRY_GROUP_ESTABLISHED:
845
logger.debug(u"Zeroconf service established.")
586
logger.debug(u"Service established.")
846
587
elif state == avahi.ENTRY_GROUP_COLLISION:
847
logger.warning(u"Zeroconf service name collision.")
588
logger.warning(u"Service name collision.")
848
589
service.rename()
849
590
elif state == avahi.ENTRY_GROUP_FAILURE:
850
logger.critical(u"Avahi: Error in group state changed %s",
591
logger.critical(u"Error in group state changed %s",
851
592
unicode(error))
852
raise AvahiGroupError(u"State changed: %s" % unicode(error))
593
raise AvahiGroupError("State changed: %s", str(error))
853
594
854
def if_nametoindex(interface):
595
def if_nametoindex(interface, _func=[None]):
855
596
"""Call the C function if_nametoindex(), or equivalent"""
856
global if_nametoindex
597
if _func[0] is not None:
598
return _func[0](interface)
857
599
try:
858
if_nametoindex = (ctypes.cdll.LoadLibrary
859
(ctypes.util.find_library("c"))
860
.if_nametoindex)
600
if "ctypes.util" not in sys.modules:
601
import ctypes.util
602
while True:
603
try:
604
libc = ctypes.cdll.LoadLibrary\
605
(ctypes.util.find_library("c"))
606
_func[0] = libc.if_nametoindex
607
return _func[0](interface)
608
except IOError, e:
609
if e != errno.EINTR:
610
raise
861
611
except (OSError, AttributeError):
862
612
if "struct" not in sys.modules:
863
613
import struct
864
614
if "fcntl" not in sys.modules:
865
615
import fcntl
866
def if_nametoindex(interface):
616
def the_hard_way(interface):
867
617
"Get an interface index the hard way, i.e. using fcntl()"
868
618
SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
869
with closing(socket.socket()) as s:
870
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
871
struct.pack("16s16x", interface))
619
s = socket.socket()
620
ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
621
struct.pack("16s16x", interface))
622
s.close()
872
623
interface_index = struct.unpack("I", ifreq[16:20])[0]
873
624
return interface_index
874
return if_nametoindex(interface)
875
876
877
def daemon(nochdir = False, noclose = False):
625
_func[0] = the_hard_way
626
return _func[0](interface)
627
628
629
def daemon(nochdir, noclose):
878
630
"""See daemon(3). Standard BSD Unix function.
879
631
This should really exist as os.daemon, but it doesn't (yet)."""
880
632
if os.fork():
882
634
os.setsid()
883
635
if not nochdir:
884
636
os.chdir("/")
885
if os.fork():
886
sys.exit()
887
637
if not noclose:
888
638
# Close all standard open file descriptors
889
639
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
898
648
899
649
900
650
def main():
901
parser = optparse.OptionParser(version = "%%prog %s" % version)
651
global main_loop_started
652
main_loop_started = False
653
654
parser = OptionParser()
902
655
parser.add_option("-i", "--interface", type="string",
903
656
metavar="IF", help="Bind to interface IF")
904
657
parser.add_option("-a", "--address", type="string",
905
658
help="Address to listen for requests on")
906
659
parser.add_option("-p", "--port", type="int",
907
660
help="Port number to receive requests on")
908
parser.add_option("--check", action="store_true",
661
parser.add_option("--check", action="store_true", default=False,
909
662
help="Run self-test")
910
parser.add_option("--debug", action="store_true",
663
parser.add_option("--debug", action="store_true", default=False,
911
664
help="Debug mode; run in foreground and log to"
912
665
" terminal")
913
666
parser.add_option("--priority", type="string", help="GnuTLS"
918
671
default="/etc/mandos", metavar="DIR",
919
672
help="Directory to search for configuration"
920
673
" files")
921
parser.add_option("--no-dbus", action="store_false",
922
dest="use_dbus",
923
help="Do not provide D-Bus system bus"
924
" interface")
925
options = parser.parse_args()[0]
674
(options, args) = parser.parse_args()
926
675
927
676
if options.check:
928
677
import doctest
937
686
"priority":
938
687
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
939
688
"servicename": "Mandos",
940
"use_dbus": "True",
941
689
}
942
690
943
691
# Parse config file for server-global settings
944
692
server_config = ConfigParser.SafeConfigParser(server_defaults)
945
693
del server_defaults
946
server_config.read(os.path.join(options.configdir, "mandos.conf"))
694
server_config.read(os.path.join(options.configdir, "server.conf"))
695
server_section = "server"
947
696
# Convert the SafeConfigParser object to a dict
948
server_settings = server_config.defaults()
949
# Use the appropriate methods on the non-string config options
950
server_settings["debug"] = server_config.getboolean("DEFAULT",
951
"debug")
952
server_settings["use_dbus"] = server_config.getboolean("DEFAULT",
953
"use_dbus")
954
if server_settings["port"]:
955
server_settings["port"] = server_config.getint("DEFAULT",
956
"port")
697
server_settings = dict(server_config.items(server_section))
698
# Use getboolean on the boolean config option
699
server_settings["debug"] = server_config.getboolean\
700
(server_section, "debug")
957
701
del server_config
958
702
959
703
# Override the settings from the config file with command line
960
704
# options, if set.
961
705
for option in ("interface", "address", "port", "debug",
962
"priority", "servicename", "configdir",
963
"use_dbus"):
706
"priority", "servicename", "configdir"):
964
707
value = getattr(options, option)
965
708
if value is not None:
966
709
server_settings[option] = value
967
710
del options
968
711
# Now we have our good server settings in "server_settings"
969
712
970
# For convenience
971
debug = server_settings["debug"]
972
use_dbus = server_settings["use_dbus"]
973
974
def sigsegvhandler(signum, frame):
975
raise RuntimeError('Segmentation fault')
976
977
if not debug:
978
syslogger.setLevel(logging.WARNING)
979
console.setLevel(logging.WARNING)
980
else:
981
signal.signal(signal.SIGSEGV, sigsegvhandler)
982
983
if server_settings["servicename"] != "Mandos":
984
syslogger.setFormatter(logging.Formatter
985
('Mandos (%s): %%(levelname)s:'
986
' %%(message)s'
987
% server_settings["servicename"]))
988
989
713
# Parse config file with clients
990
714
client_defaults = { "timeout": "1h",
991
715
"interval": "5m",
992
"checker": "fping -q -- %%(host)s",
993
"host": "",
716
"checker": "fping -q -- %%(fqdn)s",
994
717
}
995
718
client_config = ConfigParser.SafeConfigParser(client_defaults)
996
719
client_config.read(os.path.join(server_settings["configdir"],
997
720
"clients.conf"))
998
721
999
clients = Set()
1000
tcp_server = IPv6_TCPServer((server_settings["address"],
1001
server_settings["port"]),
1002
TCP_handler,
1003
settings=server_settings,
1004
clients=clients)
1005
pidfilename = "/var/run/mandos.pid"
1006
try:
1007
pidfile = open(pidfilename, "w")
1008
except IOError, error:
1009
logger.error("Could not open file %r", pidfilename)
1010
1011
try:
1012
uid = pwd.getpwnam("_mandos").pw_uid
1013
gid = pwd.getpwnam("_mandos").pw_gid
1014
except KeyError:
1015
try:
1016
uid = pwd.getpwnam("mandos").pw_uid
1017
gid = pwd.getpwnam("mandos").pw_gid
1018
except KeyError:
1019
try:
1020
uid = pwd.getpwnam("nobody").pw_uid
1021
gid = pwd.getpwnam("nogroup").pw_gid
1022
except KeyError:
1023
uid = 65534
1024
gid = 65534
1025
try:
1026
os.setgid(gid)
1027
os.setuid(uid)
1028
except OSError, error:
1029
if error[0] != errno.EPERM:
1030
raise error
1031
1032
# Enable all possible GnuTLS debugging
1033
if debug:
1034
# "Use a log level over 10 to enable all debugging options."
1035
# - GnuTLS manual
1036
gnutls.library.functions.gnutls_global_set_log_level(11)
1037
1038
@gnutls.library.types.gnutls_log_func
1039
def debug_gnutls(level, string):
1040
logger.debug("GnuTLS: %s", string[:-1])
1041
1042
(gnutls.library.functions
1043
.gnutls_global_set_log_function(debug_gnutls))
1044
1045
722
global service
1046
723
service = AvahiService(name = server_settings["servicename"],
1047
servicetype = "_mandos._tcp", )
724
type = "_mandos._tcp", );
1048
725
if server_settings["interface"]:
1049
service.interface = (if_nametoindex
1050
(server_settings["interface"]))
726
service.interface = if_nametoindex(server_settings["interface"])
1051
727
1052
728
global main_loop
1053
729
global bus
1056
732
DBusGMainLoop(set_as_default=True )
1057
733
main_loop = gobject.MainLoop()
1058
734
bus = dbus.SystemBus()
1059
server = dbus.Interface(bus.get_object(avahi.DBUS_NAME,
1060
avahi.DBUS_PATH_SERVER),
1061
avahi.DBUS_INTERFACE_SERVER)
735
server = dbus.Interface(
736
bus.get_object( avahi.DBUS_NAME, avahi.DBUS_PATH_SERVER ),
737
avahi.DBUS_INTERFACE_SERVER )
1062
738
# End of Avahi example code
1063
if use_dbus:
1064
bus_name = dbus.service.BusName(u"se.bsnet.fukt.Mandos", bus)
1065
1066
clients.update(Set(Client(name = section,
1067
config
1068
= dict(client_config.items(section)),
1069
use_dbus = use_dbus)
739
740
debug = server_settings["debug"]
741
742
if debug:
743
console = logging.StreamHandler()
744
# console.setLevel(logging.DEBUG)
745
console.setFormatter(logging.Formatter\
746
('%(levelname)s: %(message)s'))
747
logger.addHandler(console)
748
del console
749
750
clients = Set()
751
def remove_from_clients(client):
752
clients.remove(client)
753
if not clients:
754
logger.debug(u"No clients left, exiting")
755
sys.exit()
756
757
clients.update(Set(Client(name=section,
758
stop_hook = remove_from_clients,
759
**(dict(client_config\
760
.items(section))))
1070
761
for section in client_config.sections()))
1071
if not clients:
1072
logger.warning(u"No clients defined")
1073
1074
if debug:
1075
# Redirect stdin so all checkers get /dev/null
1076
null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)
1077
os.dup2(null, sys.stdin.fileno())
1078
if null > 2:
1079
os.close(null)
1080
else:
1081
# No console logging
1082
logger.removeHandler(console)
1083
# Close all input and output, do double fork, etc.
1084
daemon()
1085
1086
try:
1087
pid = os.getpid()
1088
pidfile.write(str(pid) + "\n")
1089
pidfile.close()
1090
del pidfile
1091
except IOError:
1092
logger.error(u"Could not write to file %r with PID %d",
1093
pidfilename, pid)
1094
except NameError:
1095
# "pidfile" was never created
1096
pass
1097
del pidfilename
762
763
if not debug:
764
daemon(False, False)
1098
765
1099
766
def cleanup():
1100
767
"Cleanup function; run on exit"
1107
774
1108
775
while clients:
1109
776
client = clients.pop()
1110
client.disable_hook = None
1111
client.disable()
777
client.stop_hook = None
778
client.stop()
1112
779
1113
780
atexit.register(cleanup)
1114
781
1117
784
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
1118
785
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
1119
786
1120
if use_dbus:
1121
class MandosServer(dbus.service.Object):
1122
"""A D-Bus proxy object"""
1123
def __init__(self):
1124
dbus.service.Object.__init__(self, bus, "/")
1125
_interface = u"se.bsnet.fukt.Mandos"
1126
1127
@dbus.service.signal(_interface, signature="oa{sv}")
1128
def ClientAdded(self, objpath, properties):
1129
"D-Bus signal"
1130
pass
1131
1132
@dbus.service.signal(_interface, signature="os")
1133
def ClientRemoved(self, objpath, name):
1134
"D-Bus signal"
1135
pass
1136
1137
@dbus.service.method(_interface, out_signature="ao")
1138
def GetAllClients(self):
1139
"D-Bus method"
1140
return dbus.Array(c.dbus_object_path for c in clients)
1141
1142
@dbus.service.method(_interface, out_signature="a{oa{sv}}")
1143
def GetAllClientsWithProperties(self):
1144
"D-Bus method"
1145
return dbus.Dictionary(
1146
((c.dbus_object_path, c.GetAllProperties())
1147
for c in clients),
1148
signature="oa{sv}")
1149
1150
@dbus.service.method(_interface, in_signature="o")
1151
def RemoveClient(self, object_path):
1152
"D-Bus method"
1153
for c in clients:
1154
if c.dbus_object_path == object_path:
1155
clients.remove(c)
1156
# Don't signal anything except ClientRemoved
1157
c.use_dbus = False
1158
c.disable()
1159
# Emit D-Bus signal
1160
self.ClientRemoved(object_path, c.name)
1161
return
1162
raise KeyError
1163
1164
del _interface
1165
1166
mandos_server = MandosServer()
1167
1168
787
for client in clients:
1169
if use_dbus:
1170
# Emit D-Bus signal
1171
mandos_server.ClientAdded(client.dbus_object_path,
1172
client.GetAllProperties())
1173
client.enable()
1174
1175
tcp_server.enable()
1176
tcp_server.server_activate()
1177
788
client.start()
789
790
tcp_server = IPv6_TCPServer((server_settings["address"],
791
server_settings["port"]),
792
tcp_handler,
793
settings=server_settings,
794
clients=clients)
1178
795
# Find out what port we got
1179
796
service.port = tcp_server.socket.getsockname()[1]
1180
logger.info(u"Now listening on address %r, port %d, flowinfo %d,"
1181
u" scope_id %d" % tcp_server.socket.getsockname())
797
logger.debug(u"Now listening on address %r, port %d, flowinfo %d,"
798
u" scope_id %d" % tcp_server.socket.getsockname())
1182
799
1183
800
#service.interface = tcp_server.socket.getsockname()[3]
1184
801
1194
811
1195
812
gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,
1196
813
lambda *args, **kwargs:
1197
(tcp_server.handle_request
1198
(*args[2:], **kwargs) or True))
814
tcp_server.handle_request\
815
(*args[2:], **kwargs) or True)
1199
816
1200
logger.debug(u"Starting main loop")
817
logger.debug("Starting main loop")
818
main_loop_started = True
1201
819
main_loop.run()
1202
820
except AvahiError, error:
1203
logger.critical(u"AvahiError: %s", error)
821
logger.critical(u"AvahiError: %s" + unicode(error))
1204
822
sys.exit(1)
1205
823
except KeyboardInterrupt:
1206
824
if debug:
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0