/mandos/trunk : revision 502.1.1

28

# along with this program. If not, see

29

# <http://www.gnu.org/licenses/>.

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#

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# Contact the authors at <mandos@recompile.se>.

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# Contact the authors at <mandos@fukt.bsnet.se>.

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#

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34

from __future__ import (division, absolute_import, print_function,

62

import functools

63

import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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65

69

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import dbus

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67

import dbus.service

75

72

import ctypes.util

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73

import xml.dom.minidom

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74

import inspect

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import GnuPGInterface

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75

80

76

try:

81

77

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

85

81

except ImportError:

86

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SO_BINDTODEVICE = None

87

83

88

version = "1.4.1"

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stored_state_file = "clients.pickle"

90

91

logger = logging.getLogger()

84

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version = "1.3.1"

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#logger = logging.getLogger('mandos')

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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 = str("/dev/log")))

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96

try:

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if_nametoindex = (ctypes.cdll.LoadLibrary

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(ctypes.util.find_library("c"))

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.if_nametoindex)

100

except (OSError, AttributeError):

101

def if_nametoindex(interface):

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"Get an interface index the hard way, i.e. using fcntl()"

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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

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with contextlib.closing(socket.socket()) as s:

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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

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struct.pack(str("16s16x"),

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interface))

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interface_index = struct.unpack(str("I"),

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ifreq[16:20])[0]

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return interface_index

111

112

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def initlogger(level=logging.WARNING):

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"""init logger and add loglevel"""

115

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syslogger.setFormatter(logging.Formatter

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('Mandos [%(process)d]: %(levelname)s:'

118

' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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129

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class PGPError(Exception):

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"""Exception if encryption/decryption fails"""

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pass

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134

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class PGPEngine(object):

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"""A simple class for OpenPGP symmetric encryption & decryption"""

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def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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self.tempdir = tempfile.mkdtemp(prefix="mandos-")

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

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'--quiet'])

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def __enter__(self):

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return self

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149

def __exit__ (self, exc_type, exc_value, traceback):

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self._cleanup()

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return False

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153

def __del__(self):

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self._cleanup()

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def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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for root, dirs, files in os.walk(self.tempdir,

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topdown = False):

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for filename in files:

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os.remove(os.path.join(root, filename))

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for dirname in dirs:

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os.rmdir(os.path.join(root, dirname))

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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# Passphrase can not be empty and can not contain newlines or

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# NUL bytes. So we prefix it and hex encode it.

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return b"mandos" + binascii.hexlify(password)

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def encrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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ciphertext = f.read()

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proc.wait()

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except IOError as e:

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raise PGPError(e)

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self.gnupg.passphrase = None

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return ciphertext

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191

def decrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

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with contextlib.closing(proc.handles['stdin'] ) as f:

199

f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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proc.wait()

203

except IOError as e:

204

raise PGPError(e)

205

self.gnupg.passphrase = None

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return decrypted_plaintext

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208

92

syslogger.setFormatter(logging.Formatter

93

('Mandos [%(process)d]: %(levelname)s:'

94

' %(message)s'))

95

logger.addHandler(syslogger)

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97

console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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102

210

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class AvahiError(Exception):

211

104

def __init__(self, value, *args, **kwargs):

266

159

" after %i retries, exiting.",

267

160

self.rename_count)

268

161

raise AvahiServiceError("Too many renames")

269

self.name = unicode(self.server

270

.GetAlternativeServiceName(self.name))

162

self.name = unicode(self.server.GetAlternativeServiceName(self.name))

271

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logger.info("Changing Zeroconf service name to %r ...",

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164

self.name)

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syslogger.setFormatter(logging.Formatter

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('Mandos (%s) [%%(process)d]:'

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' %%(levelname)s: %%(message)s'

168

% self.name))

273

169

self.remove()

274

170

try:

275

171

self.add()

295

191

avahi.DBUS_INTERFACE_ENTRY_GROUP)

296

192

self.entry_group_state_changed_match = (

297

193

self.group.connect_to_signal(

298

'StateChanged', self.entry_group_state_changed))

194

'StateChanged', self .entry_group_state_changed))

299

195

logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

300

196

self.name, self.type)

301

197

self.group.AddService(

327

223

try:

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224

self.group.Free()

329

225

except (dbus.exceptions.UnknownMethodException,

330

dbus.exceptions.DBusException):

226

dbus.exceptions.DBusException) as e:

331

227

pass

332

228

self.group = None

333

229

self.remove()

367

263

self.server_state_changed)

368

264

self.server_state_changed(self.server.GetState())

369

265

370

class AvahiServiceToSyslog(AvahiService):

371

def rename(self):

372

"""Add the new name to the syslog messages"""

373

ret = AvahiService.rename(self)

374

syslogger.setFormatter(logging.Formatter

375

('Mandos (%s) [%%(process)d]:'

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' %%(levelname)s: %%(message)s'

377

% self.name))

378

return ret

379

266

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def timedelta_to_milliseconds(td):

267

def _timedelta_to_milliseconds(td):

381

268

"Convert a datetime.timedelta() to milliseconds"

382

269

return ((td.days * 24 * 60 * 60 * 1000)

383

270

+ (td.seconds * 1000)

387

274

"""A representation of a client host served by this server.

388

275

389

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Attributes:

390

approved: bool(); 'None' if not yet approved/disapproved

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_approved: bool(); 'None' if not yet approved/disapproved

391

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approval_delay: datetime.timedelta(); Time to wait for approval

392

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approval_duration: datetime.timedelta(); Duration of one approval

393

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checker: subprocess.Popen(); a running checker process used

400

287

instance %(name)s can be used in the command.

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checker_initiator_tag: a gobject event source tag, or None

402

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created: datetime.datetime(); (UTC) object creation

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client_structure: Object describing what attributes a client has

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and is used for storing the client at exit

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current_checker_command: string; current running checker_command

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disable_hook: If set, called by disable() as disable_hook(self)

406

292

disable_initiator_tag: a gobject event source tag, or None

407

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enabled: bool()

408

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fingerprint: string (40 or 32 hexadecimal digits); used to

411

297

interval: datetime.timedelta(); How often to start a new checker

412

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last_approval_request: datetime.datetime(); (UTC) or None

413

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last_checked_ok: datetime.datetime(); (UTC) or None

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last_checker_status: integer between 0 and 255 reflecting exit

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status of last checker. -1 reflects crashed

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checker, or None.

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last_enabled: datetime.datetime(); (UTC) or None

300

last_enabled: datetime.datetime(); (UTC)

418

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name: string; from the config file, used in log messages and

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D-Bus identifiers

420

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secret: bytestring; sent verbatim (over TLS) to client

430

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"created", "enabled", "fingerprint",

431

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"host", "interval", "last_checked_ok",

432

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"last_enabled", "name", "timeout")

433

client_defaults = { "timeout": "5m",

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"extended_timeout": "15m",

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"interval": "2m",

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"checker": "fping -q -- %%(host)s",

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"host": "",

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"approval_delay": "0s",

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"approval_duration": "1s",

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"approved_by_default": "True",

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"enabled": "True",

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}

443

316

444

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def timeout_milliseconds(self):

445

318

"Return the 'timeout' attribute in milliseconds"

446

return timedelta_to_milliseconds(self.timeout)

319

return _timedelta_to_milliseconds(self.timeout)

447

320

448

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def extended_timeout_milliseconds(self):

449

322

"Return the 'extended_timeout' attribute in milliseconds"

450

return timedelta_to_milliseconds(self.extended_timeout)

323

return _timedelta_to_milliseconds(self.extended_timeout)

451

324

452

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def interval_milliseconds(self):

453

326

"Return the 'interval' attribute in milliseconds"

454

return timedelta_to_milliseconds(self.interval)

327

return _timedelta_to_milliseconds(self.interval)

455

328

456

329

def approval_delay_milliseconds(self):

457

return timedelta_to_milliseconds(self.approval_delay)

458

459

@staticmethod

460

def config_parser(config):

461

""" Construct a new dict of client settings of this form:

462

{ client_name: {setting_name: value, ...}, ...}

463

with exceptions for any special settings as defined above"""

464

settings = {}

465

for client_name in config.sections():

466

section = dict(config.items(client_name))

467

client = settings[client_name] = {}

468

469

client["host"] = section["host"]

470

# Reformat values from string types to Python types

471

client["approved_by_default"] = config.getboolean(

472

client_name, "approved_by_default")

473

client["enabled"] = config.getboolean(client_name, "enabled")

474

475

client["fingerprint"] = (section["fingerprint"].upper()

476

.replace(" ", ""))

477

if "secret" in section:

478

client["secret"] = section["secret"].decode("base64")

479

elif "secfile" in section:

480

with open(os.path.expanduser(os.path.expandvars

481

(section["secfile"])),

482

"rb") as secfile:

483

client["secret"] = secfile.read()

484

else:

485

raise TypeError("No secret or secfile for section %s"

486

% section)

487

client["timeout"] = string_to_delta(section["timeout"])

488

client["extended_timeout"] = string_to_delta(

489

section["extended_timeout"])

490

client["interval"] = string_to_delta(section["interval"])

491

client["approval_delay"] = string_to_delta(

492

section["approval_delay"])

493

client["approval_duration"] = string_to_delta(

494

section["approval_duration"])

495

client["checker_command"] = section["checker"]

496

client["last_approval_request"] = None

497

client["last_checked_ok"] = None

498

client["last_checker_status"] = None

499

if client["enabled"]:

500

client["last_enabled"] = datetime.datetime.utcnow()

501

client["expires"] = (datetime.datetime.utcnow()

502

+ client["timeout"])

503

else:

504

client["last_enabled"] = None

505

client["expires"] = None

506

507

return settings

508

509

510

def __init__(self, settings, name = None):

330

return _timedelta_to_milliseconds(self.approval_delay)

331

332

def __init__(self, name = None, disable_hook=None, config=None):

511

333

"""Note: the 'checker' key in 'config' sets the

512

334

'checker_command' attribute and *not* the 'checker'

513

335

attribute."""

514

336

self.name = name

515

# adding all client settings

516

for setting, value in settings.iteritems():

517

setattr(self, setting, value)

518

337

if config is None:

338

config = {}

519

339

logger.debug("Creating client %r", self.name)

520

340

# Uppercase and remove spaces from fingerprint for later

521

341

# comparison purposes with return value from the fingerprint()

522

342

# function

343

self.fingerprint = (config["fingerprint"].upper()

344

.replace(" ", ""))

523

345

logger.debug(" Fingerprint: %s", self.fingerprint)

524

self.created = settings.get("created", datetime.datetime.utcnow())

525

526

# attributes specific for this server instance

346

if "secret" in config:

347

self.secret = config["secret"].decode("base64")

348

elif "secfile" in config:

349

with open(os.path.expanduser(os.path.expandvars

350

(config["secfile"])),

351

"rb") as secfile:

352

self.secret = secfile.read()

353

else:

354

raise TypeError("No secret or secfile for client %s"

355

% self.name)

356

self.host = config.get("host", "")

357

self.created = datetime.datetime.utcnow()

358

self.enabled = False

359

self.last_approval_request = None

360

self.last_enabled = None

361

self.last_checked_ok = None

362

self.timeout = string_to_delta(config["timeout"])

363

self.extended_timeout = string_to_delta(config["extended_timeout"])

364

self.interval = string_to_delta(config["interval"])

365

self.disable_hook = disable_hook

527

366

self.checker = None

528

367

self.checker_initiator_tag = None

529

368

self.disable_initiator_tag = None

369

self.expires = None

530

370

self.checker_callback_tag = None

371

self.checker_command = config["checker"]

531

372

self.current_checker_command = None

532

self.approved = None

373

self.last_connect = None

374

self._approved = None

375

self.approved_by_default = config.get("approved_by_default",

376

True)

533

377

self.approvals_pending = 0

534

self.changedstate = (multiprocessing_manager

535

.Condition(multiprocessing_manager

536

.Lock()))

537

self.client_structure = [attr for attr in

538

self.__dict__.iterkeys()

539

if not attr.startswith("_")]

540

self.client_structure.append("client_structure")

541

542

for name, t in inspect.getmembers(type(self),

543

lambda obj:

544

isinstance(obj,

545

property)):

546

if not name.startswith("_"):

547

self.client_structure.append(name)

378

self.approval_delay = string_to_delta(

379

config["approval_delay"])

380

self.approval_duration = string_to_delta(

381

config["approval_duration"])

382

self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())

548

383

549

# Send notice to process children that client state has changed

550

384

def send_changedstate(self):

551

with self.changedstate:

552

self.changedstate.notify_all()

553

385

self.changedstate.acquire()

386

self.changedstate.notify_all()

387

self.changedstate.release()

388

554

389

def enable(self):

555

390

"""Start this client's checker and timeout hooks"""

556

391

if getattr(self, "enabled", False):

557

392

# Already enabled

558

393

return

559

394

self.send_changedstate()

395

# Schedule a new checker to be started an 'interval' from now,

396

# and every interval from then on.

397

self.checker_initiator_tag = (gobject.timeout_add

398

(self.interval_milliseconds(),

399

self.start_checker))

400

# Schedule a disable() when 'timeout' has passed

560

401

self.expires = datetime.datetime.utcnow() + self.timeout

402

self.disable_initiator_tag = (gobject.timeout_add

403

(self.timeout_milliseconds(),

404

self.disable))

561

405

self.enabled = True

562

406

self.last_enabled = datetime.datetime.utcnow()

563

self.init_checker()

407

# Also start a new checker *right now*.

408

self.start_checker()

564

409

565

410

def disable(self, quiet=True):

566

411

"""Disable this client."""

578

423

gobject.source_remove(self.checker_initiator_tag)

579

424

self.checker_initiator_tag = None

580

425

self.stop_checker()

426

if self.disable_hook:

427

self.disable_hook(self)

581

428

self.enabled = False

582

429

# Do not run this again if called by a gobject.timeout_add

583

430

return False

584

431

585

432

def __del__(self):

433

self.disable_hook = None

586

434

self.disable()

587

435

588

def init_checker(self):

589

# Schedule a new checker to be started an 'interval' from now,

590

# and every interval from then on.

591

self.checker_initiator_tag = (gobject.timeout_add

592

(self.interval_milliseconds(),

593

self.start_checker))

594

# Schedule a disable() when 'timeout' has passed

595

self.disable_initiator_tag = (gobject.timeout_add

596

(self.timeout_milliseconds(),

597

self.disable))

598

# Also start a new checker *right now*.

599

self.start_checker()

600

601

436

def checker_callback(self, pid, condition, command):

602

437

"""The checker has completed, so take appropriate actions."""

603

438

self.checker_callback_tag = None

604

439

self.checker = None

605

440

if os.WIFEXITED(condition):

606

self.last_checker_status = os.WEXITSTATUS(condition)

607

if self.last_checker_status == 0:

441

exitstatus = os.WEXITSTATUS(condition)

442

if exitstatus == 0:

608

443

logger.info("Checker for %(name)s succeeded",

609

444

vars(self))

610

445

self.checked_ok()

612

447

logger.info("Checker for %(name)s failed",

613

448

vars(self))

614

449

else:

615

self.last_checker_status = -1

616

450

logger.warning("Checker for %(name)s crashed?",

617

451

vars(self))

618

452

625

459

if timeout is None:

626

460

timeout = self.timeout

627

461

self.last_checked_ok = datetime.datetime.utcnow()

628

if self.disable_initiator_tag is not None:

629

gobject.source_remove(self.disable_initiator_tag)

630

if getattr(self, "enabled", False):

631

self.disable_initiator_tag = (gobject.timeout_add

632

(timedelta_to_milliseconds

633

(timeout), self.disable))

634

self.expires = datetime.datetime.utcnow() + timeout

462

gobject.source_remove(self.disable_initiator_tag)

463

self.expires = datetime.datetime.utcnow() + timeout

464

self.disable_initiator_tag = (gobject.timeout_add

465

(_timedelta_to_milliseconds(timeout),

466

self.disable))

635

467

636

468

def need_approval(self):

637

469

self.last_approval_request = datetime.datetime.utcnow()

794

626

def _get_all_dbus_properties(self):

795

627

"""Returns a generator of (name, attribute) pairs

796

628

"""

797

return ((prop.__get__(self)._dbus_name, prop.__get__(self))

798

for cls in self.__class__.__mro__

629

return ((prop._dbus_name, prop)

799

630

for name, prop in

800

inspect.getmembers(cls, self._is_dbus_property))

631

inspect.getmembers(self, self._is_dbus_property))

801

632

802

633

def _get_dbus_property(self, interface_name, property_name):

803

634

"""Returns a bound method if one exists which is a D-Bus

804

635

property with the specified name and interface.

805

636

"""

806

for cls in self.__class__.__mro__:

807

for name, value in (inspect.getmembers

808

(cls, self._is_dbus_property)):

809

if (value._dbus_name == property_name

810

and value._dbus_interface == interface_name):

811

return value.__get__(self)

812

637

for name in (property_name,

638

property_name + "_dbus_property"):

639

prop = getattr(self, name, None)

640

if (prop is None

641

or not self._is_dbus_property(prop)

642

or prop._dbus_name != property_name

643

or (interface_name and prop._dbus_interface

644

and interface_name != prop._dbus_interface)):

645

continue

646

return prop

813

647

# No such property

814

648

raise DBusPropertyNotFound(self.dbus_object_path + ":"

815

649

+ interface_name + "."

852

686

853

687

Note: Will not include properties with access="write".

854

688

"""

855

properties = {}

689

all = {}

856

690

for name, prop in self._get_all_dbus_properties():

857

691

if (interface_name

858

692

and interface_name != prop._dbus_interface):

863

697

continue

864

698

value = prop()

865

699

if not hasattr(value, "variant_level"):

866

properties[name] = value

700

all[name] = value

867

701

continue

868

properties[name] = type(value)(value, variant_level=

869

value.variant_level+1)

870

return dbus.Dictionary(properties, signature="sv")

702

all[name] = type(value)(value, variant_level=

703

value.variant_level+1)

704

return dbus.Dictionary(all, signature="sv")

871

705

872

706

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

873

707

out_signature="s",

925

759

variant_level=variant_level)

926

760

927

761

928

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

929

.__metaclass__):

930

"""Applied to an empty subclass of a D-Bus object, this metaclass

931

will add additional D-Bus attributes matching a certain pattern.

932

"""

933

def __new__(mcs, name, bases, attr):

934

# Go through all the base classes which could have D-Bus

935

# methods, signals, or properties in them

936

for base in (b for b in bases

937

if issubclass(b, dbus.service.Object)):

938

# Go though all attributes of the base class

939

for attrname, attribute in inspect.getmembers(base):

940

# Ignore non-D-Bus attributes, and D-Bus attributes

941

# with the wrong interface name

942

if (not hasattr(attribute, "_dbus_interface")

943

or not attribute._dbus_interface

944

.startswith("se.recompile.Mandos")):

945

continue

946

# Create an alternate D-Bus interface name based on

947

# the current name

948

alt_interface = (attribute._dbus_interface

949

.replace("se.recompile.Mandos",

950

"se.bsnet.fukt.Mandos"))

951

# Is this a D-Bus signal?

952

if getattr(attribute, "_dbus_is_signal", False):

953

# Extract the original non-method function by

954

# black magic

955

nonmethod_func = (dict(

956

zip(attribute.func_code.co_freevars,

957

attribute.__closure__))["func"]

958

.cell_contents)

959

# Create a new, but exactly alike, function

960

# object, and decorate it to be a new D-Bus signal

961

# with the alternate D-Bus interface name

962

new_function = (dbus.service.signal

963

(alt_interface,

964

attribute._dbus_signature)

965

(types.FunctionType(

966

nonmethod_func.func_code,

967

nonmethod_func.func_globals,

968

nonmethod_func.func_name,

969

nonmethod_func.func_defaults,

970

nonmethod_func.func_closure)))

971

# Define a creator of a function to call both the

972

# old and new functions, so both the old and new

973

# signals gets sent when the function is called

974

def fixscope(func1, func2):

975

"""This function is a scope container to pass

976

func1 and func2 to the "call_both" function

977

outside of its arguments"""

978

def call_both(*args, **kwargs):

979

"""This function will emit two D-Bus

980

signals by calling func1 and func2"""

981

func1(*args, **kwargs)

982

func2(*args, **kwargs)

983

return call_both

984

# Create the "call_both" function and add it to

985

# the class

986

attr[attrname] = fixscope(attribute,

987

new_function)

988

# Is this a D-Bus method?

989

elif getattr(attribute, "_dbus_is_method", False):

990

# Create a new, but exactly alike, function

991

# object. Decorate it to be a new D-Bus method

992

# with the alternate D-Bus interface name. Add it

993

# to the class.

994

attr[attrname] = (dbus.service.method

995

(alt_interface,

996

attribute._dbus_in_signature,

997

attribute._dbus_out_signature)

998

(types.FunctionType

999

(attribute.func_code,

1000

attribute.func_globals,

1001

attribute.func_name,

1002

attribute.func_defaults,

1003

attribute.func_closure)))

1004

# Is this a D-Bus property?

1005

elif getattr(attribute, "_dbus_is_property", False):

1006

# Create a new, but exactly alike, function

1007

# object, and decorate it to be a new D-Bus

1008

# property with the alternate D-Bus interface

1009

# name. Add it to the class.

1010

attr[attrname] = (dbus_service_property

1011

(alt_interface,

1012

attribute._dbus_signature,

1013

attribute._dbus_access,

1014

attribute

1015

._dbus_get_args_options

1016

["byte_arrays"])

1017

(types.FunctionType

1018

(attribute.func_code,

1019

attribute.func_globals,

1020

attribute.func_name,

1021

attribute.func_defaults,

1022

attribute.func_closure)))

1023

return type.__new__(mcs, name, bases, attr)

1024

1025

1026

762

class ClientDBus(Client, DBusObjectWithProperties):

1027

763

"""A Client class using D-Bus

1028

764

1037

773

# dbus.service.Object doesn't use super(), so we can't either.

1038

774

1039

775

def __init__(self, bus = None, *args, **kwargs):

776

self._approvals_pending = 0

1040

777

self.bus = bus

1041

778

Client.__init__(self, *args, **kwargs)

1042

self._approvals_pending = 0

1043

1044

self._approvals_pending = 0

1045

779

# Only now, when this client is initialized, can it show up on

1046

780

# the D-Bus

1047

781

client_object_name = unicode(self.name).translate(

1055

789

def notifychangeproperty(transform_func,

1056

790

dbus_name, type_func=lambda x: x,

1057

791

variant_level=1):

1058

""" Modify a variable so that it's a property which announces

1059

its changes to DBus.

1060

1061

transform_fun: Function that takes a value and a variant_level

1062

and transforms it to a D-Bus type.

1063

dbus_name: D-Bus name of the variable

792

""" Modify a variable so that its a property that announce its

793

changes to DBus.

794

transform_fun: Function that takes a value and transform it to

795

DBus type.

796

dbus_name: DBus name of the variable

1064

797

type_func: Function that transform the value before sending it

1065

to the D-Bus. Default: no transform

1066

variant_level: D-Bus variant level. Default: 1

798

to DBus

799

variant_level: DBus variant level. default: 1

1067

800

"""

1068

attrname = "_{0}".format(dbus_name)

801

real_value = [None,]

1069

802

def setter(self, value):

803

old_value = real_value[0]

804

real_value[0] = value

1070

805

if hasattr(self, "dbus_object_path"):

1071

if (not hasattr(self, attrname) or

1072

type_func(getattr(self, attrname, None))

1073

!= type_func(value)):

1074

dbus_value = transform_func(type_func(value),

1075

variant_level

1076

=variant_level)

806

if type_func(old_value) != type_func(real_value[0]):

807

dbus_value = transform_func(type_func(real_value[0]),

808

variant_level)

1077

809

self.PropertyChanged(dbus.String(dbus_name),

1078

810

dbus_value)

1079

setattr(self, attrname, value)

1080

811

1081

return property(lambda self: getattr(self, attrname), setter)

812

return property(lambda self: real_value[0], setter)

1082

813

1083

814

1084

815

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1089

820

last_enabled = notifychangeproperty(datetime_to_dbus,

1090

821

"LastEnabled")

1091

822

checker = notifychangeproperty(dbus.Boolean, "CheckerRunning",

1092

type_func = lambda checker:

1093

checker is not None)

823

type_func = lambda checker: checker is not None)

1094

824

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1095

825

"LastCheckedOK")

1096

last_approval_request = notifychangeproperty(

1097

datetime_to_dbus, "LastApprovalRequest")

826

last_approval_request = notifychangeproperty(datetime_to_dbus,

827

"LastApprovalRequest")

1098

828

approved_by_default = notifychangeproperty(dbus.Boolean,

1099

829

"ApprovedByDefault")

1100

approval_delay = notifychangeproperty(dbus.UInt64,

1101

"ApprovalDelay",

1102

type_func =

1103

timedelta_to_milliseconds)

1104

approval_duration = notifychangeproperty(

1105

dbus.UInt64, "ApprovalDuration",

1106

type_func = timedelta_to_milliseconds)

830

approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",

831

type_func = _timedelta_to_milliseconds)

832

approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",

833

type_func = _timedelta_to_milliseconds)

1107

834

host = notifychangeproperty(dbus.String, "Host")

1108

timeout = notifychangeproperty(dbus.UInt64, "Timeout",

1109

type_func =

1110

timedelta_to_milliseconds)

1111

extended_timeout = notifychangeproperty(

1112

dbus.UInt64, "ExtendedTimeout",

1113

type_func = timedelta_to_milliseconds)

1114

interval = notifychangeproperty(dbus.UInt64,

1115

"Interval",

1116

type_func =

1117

timedelta_to_milliseconds)

835

timeout = notifychangeproperty(dbus.UInt16, "Timeout",

836

type_func = _timedelta_to_milliseconds)

837

extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",

838

type_func = _timedelta_to_milliseconds)

839

interval = notifychangeproperty(dbus.UInt16, "Interval",

840

type_func = _timedelta_to_milliseconds)

1118

841

checker_command = notifychangeproperty(dbus.String, "Checker")

1119

842

1120

843

del notifychangeproperty

1162

885

return r

1163

886

1164

887

def _reset_approved(self):

1165

self.approved = None

888

self._approved = None

1166

889

return False

1167

890

1168

891

def approve(self, value=True):

1169

892

self.send_changedstate()

1170

self.approved = value

1171

gobject.timeout_add(timedelta_to_milliseconds

893

self._approved = value

894

gobject.timeout_add(_timedelta_to_milliseconds

1172

895

(self.approval_duration),

1173

896

self._reset_approved)

1174

897

1175

898

1176

899

## D-Bus methods, signals & properties

1177

_interface = "se.recompile.Mandos.Client"

900

_interface = "se.bsnet.fukt.Mandos.Client"

1178

901

1179

902

## Signals

1180

903

1217

940

"D-Bus signal"

1218

941

return self.need_approval()

1219

942

1220

# NeRwequest - signal

1221

@dbus.service.signal(_interface, signature="s")

1222

def NewRequest(self, ip):

1223

"""D-Bus signal

1224

Is sent after a client request a password.

1225

"""

1226

pass

1227

1228

943

## Methods

1229

944

1230

945

# Approve - method

1288

1003

access="readwrite")

1289

1004

def ApprovalDuration_dbus_property(self, value=None):

1290

1005

if value is None: # get

1291

return dbus.UInt64(timedelta_to_milliseconds(

1006

return dbus.UInt64(_timedelta_to_milliseconds(

1292

1007

self.approval_duration))

1293

1008

self.approval_duration = datetime.timedelta(0, 0, 0, value)

1294

1009

1308

1023

def Host_dbus_property(self, value=None):

1309

1024

if value is None: # get

1310

1025

return dbus.String(self.host)

1311

self.host = unicode(value)

1026

self.host = value

1312

1027

1313

1028

# Created - property

1314

1029

@dbus_service_property(_interface, signature="s", access="read")

1315

1030

def Created_dbus_property(self):

1316

return datetime_to_dbus(self.created)

1031

return dbus.String(datetime_to_dbus(self.created))

1317

1032

1318

1033

# LastEnabled - property

1319

1034

@dbus_service_property(_interface, signature="s", access="read")

1363

1078

gobject.source_remove(self.disable_initiator_tag)

1364

1079

self.disable_initiator_tag = None

1365

1080

self.expires = None

1366

time_to_die = timedelta_to_milliseconds((self

1367

.last_checked_ok

1368

+ self.timeout)

1369

- datetime.datetime

1370

.utcnow())

1081

time_to_die = (self.

1082

_timedelta_to_milliseconds((self

1083

.last_checked_ok

1084

+ self.timeout)

1085

- datetime.datetime

1086

.utcnow()))

1371

1087

if time_to_die <= 0:

1372

1088

# The timeout has passed

1373

1089

self.disable()

1374

1090

else:

1375

1091

self.expires = (datetime.datetime.utcnow()

1376

+ datetime.timedelta(milliseconds =

1377

time_to_die))

1092

+ datetime.timedelta(milliseconds = time_to_die))

1378

1093

self.disable_initiator_tag = (gobject.timeout_add

1379

1094

(time_to_die, self.disable))

1380

1095

1395

1110

self.interval = datetime.timedelta(0, 0, 0, value)

1396

1111

if getattr(self, "checker_initiator_tag", None) is None:

1397

1112

return

1398

if self.enabled:

1399

# Reschedule checker run

1400

gobject.source_remove(self.checker_initiator_tag)

1401

self.checker_initiator_tag = (gobject.timeout_add

1402

(value, self.start_checker))

1403

self.start_checker() # Start one now, too

1113

# Reschedule checker run

1114

gobject.source_remove(self.checker_initiator_tag)

1115

self.checker_initiator_tag = (gobject.timeout_add

1116

(value, self.start_checker))

1117

self.start_checker() # Start one now, too

1404

1118

1405

1119

# Checker - property

1406

1120

@dbus_service_property(_interface, signature="s",

1408

1122

def Checker_dbus_property(self, value=None):

1409

1123

if value is None: # get

1410

1124

return dbus.String(self.checker_command)

1411

self.checker_command = unicode(value)

1125

self.checker_command = value

1412

1126

1413

1127

# CheckerRunning - property

1414

1128

@dbus_service_property(_interface, signature="b",

1443

1157

raise KeyError()

1444

1158

1445

1159

def __getattribute__(self, name):

1446

if name == '_pipe':

1160

if(name == '_pipe'):

1447

1161

return super(ProxyClient, self).__getattribute__(name)

1448

1162

self._pipe.send(('getattr', name))

1449

1163

data = self._pipe.recv()

1456

1170

return func

1457

1171

1458

1172

def __setattr__(self, name, value):

1459

if name == '_pipe':

1173

if(name == '_pipe'):

1460

1174

return super(ProxyClient, self).__setattr__(name, value)

1461

1175

self._pipe.send(('setattr', name, value))

1462

1176

1463

1177

1464

class ClientDBusTransitional(ClientDBus):

1465

__metaclass__ = AlternateDBusNamesMetaclass

1466

1467

1468

1178

class ClientHandler(socketserver.BaseRequestHandler, object):

1469

1179

"""A class to handle client connections.

1470

1180

1538

1248

except KeyError:

1539

1249

return

1540

1250

1541

if self.server.use_dbus:

1542

# Emit D-Bus signal

1543

client.NewRequest(str(self.client_address))

1544

1545

1251

if client.approval_delay:

1546

1252

delay = client.approval_delay

1547

1253

client.approvals_pending += 1

1553

1259

client.name)

1554

1260

if self.server.use_dbus:

1555

1261

# Emit D-Bus signal

1556

client.Rejected("Disabled")

1262

client.Rejected("Disabled")

1557

1263

return

1558

1264

1559

if client.approved or not client.approval_delay:

1265

if client._approved or not client.approval_delay:

1560

1266

#We are approved or approval is disabled

1561

1267

break

1562

elif client.approved is None:

1268

elif client._approved is None:

1563

1269

logger.info("Client %s needs approval",

1564

1270

client.name)

1565

1271

if self.server.use_dbus:

1576

1282

return

1577

1283

1578

1284

#wait until timeout or approved

1285

#x = float(client._timedelta_to_milliseconds(delay))

1579

1286

time = datetime.datetime.now()

1580

1287

client.changedstate.acquire()

1581

(client.changedstate.wait

1582

(float(client.timedelta_to_milliseconds(delay)

1583

/ 1000)))

1288

client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))

1584

1289

client.changedstate.release()

1585

1290

time2 = datetime.datetime.now()

1586

1291

if (time2 - time) >= delay:

1610

1315

sent_size += sent

1611

1316

1612

1317

logger.info("Sending secret to %s", client.name)

1613

# bump the timeout using extended_timeout

1318

# bump the timeout as if seen

1614

1319

client.checked_ok(client.extended_timeout)

1615

1320

if self.server.use_dbus:

1616

1321

# Emit D-Bus signal

1684

1389

# Convert the buffer to a Python bytestring

1685

1390

fpr = ctypes.string_at(buf, buf_len.value)

1686

1391

# Convert the bytestring to hexadecimal notation

1687

hex_fpr = binascii.hexlify(fpr).upper()

1392

hex_fpr = ''.join("%02X" % ord(char) for char in fpr)

1688

1393

return hex_fpr

1689

1394

1690

1395

1693

1398

def sub_process_main(self, request, address):

1694

1399

try:

1695

1400

self.finish_request(request, address)

1696

except Exception:

1401

except:

1697

1402

self.handle_error(request, address)

1698

1403

self.close_request(request)

1699

1404

1700

1405

def process_request(self, request, address):

1701

1406

"""Start a new process to process the request."""

1702

proc = multiprocessing.Process(target = self.sub_process_main,

1703

args = (request,

1704

address))

1705

proc.start()

1706

return proc

1407

multiprocessing.Process(target = self.sub_process_main,

1408

args = (request, address)).start()

1707

1409

1708

1410

1709

1411

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1715

1417

"""

1716

1418

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1717

1419

1718

proc = MultiprocessingMixIn.process_request(self, request,

1719

client_address)

1420

super(MultiprocessingMixInWithPipe,

1421

self).process_request(request, client_address)

1720

1422

self.child_pipe.close()

1721

self.add_pipe(parent_pipe, proc)

1423

self.add_pipe(parent_pipe)

1722

1424

1723

def add_pipe(self, parent_pipe, proc):

1425

def add_pipe(self, parent_pipe):

1724

1426

"""Dummy function; override as necessary"""

1725

1427

raise NotImplementedError

1726

1428

1804

1506

self.enabled = False

1805

1507

self.clients = clients

1806

1508

if self.clients is None:

1807

self.clients = {}

1509

self.clients = set()

1808

1510

self.use_dbus = use_dbus

1809

1511

self.gnutls_priority = gnutls_priority

1810

1512

IPv6_TCPServer.__init__(self, server_address,

1814

1516

def server_activate(self):

1815

1517

if self.enabled:

1816

1518

return socketserver.TCPServer.server_activate(self)

1817

1818

1519

def enable(self):

1819

1520

self.enabled = True

1820

1821

def add_pipe(self, parent_pipe, proc):

1521

def add_pipe(self, parent_pipe):

1822

1522

# Call "handle_ipc" for both data and EOF events

1823

1523

gobject.io_add_watch(parent_pipe.fileno(),

1824

1524

gobject.IO_IN | gobject.IO_HUP,

1825

1525

functools.partial(self.handle_ipc,

1826

parent_pipe =

1827

parent_pipe,

1828

proc = proc))

1829

1526

parent_pipe = parent_pipe))

1527

1830

1528

def handle_ipc(self, source, condition, parent_pipe=None,

1831

proc = None, client_object=None):

1529

client_object=None):

1832

1530

condition_names = {

1833

1531

gobject.IO_IN: "IN", # There is data to read.

1834

1532

gobject.IO_OUT: "OUT", # Data can be written (without

1843

1541

for cond, name in

1844

1542

condition_names.iteritems()

1845

1543

if cond & condition)

1846

# error, or the other end of multiprocessing.Pipe has closed

1544

# error or the other end of multiprocessing.Pipe has closed

1847

1545

if condition & (gobject.IO_ERR | condition & gobject.IO_HUP):

1848

# Wait for other process to exit

1849

proc.join()

1850

1546

return False

1851

1547

1852

1548

# Read a request from the child

1857

1553

fpr = request[1]

1858

1554

address = request[2]

1859

1555

1860

for c in self.clients.itervalues():

1556

for c in self.clients:

1861

1557

if c.fingerprint == fpr:

1862

1558

client = c

1863

1559

break

1866

1562

"dress: %s", fpr, address)

1867

1563

if self.use_dbus:

1868

1564

# Emit D-Bus signal

1869

mandos_dbus_service.ClientNotFound(fpr,

1870

address[0])

1565

mandos_dbus_service.ClientNotFound(fpr, address[0])

1871

1566

parent_pipe.send(False)

1872

1567

return False

1873

1568

1874

1569

gobject.io_add_watch(parent_pipe.fileno(),

1875

1570

gobject.IO_IN | gobject.IO_HUP,

1876

1571

functools.partial(self.handle_ipc,

1877

parent_pipe =

1878

parent_pipe,

1879

proc = proc,

1880

client_object =

1881

client))

1572

parent_pipe = parent_pipe,

1573

client_object = client))

1882

1574

parent_pipe.send(True)

1883

# remove the old hook in favor of the new above hook on

1884

# same fileno

1575

# remove the old hook in favor of the new above hook on same fileno

1885

1576

return False

1886

1577

if command == 'funcall':

1887

1578

funcname = request[1]

1888

1579

args = request[2]

1889

1580

kwargs = request[3]

1890

1581

1891

parent_pipe.send(('data', getattr(client_object,

1892

funcname)(*args,

1893

**kwargs)))

1582

parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))

1894

1583

1895

1584

if command == 'getattr':

1896

1585

attrname = request[1]

1897

1586

if callable(client_object.__getattribute__(attrname)):

1898

1587

parent_pipe.send(('function',))

1899

1588

else:

1900

parent_pipe.send(('data', client_object

1901

.__getattribute__(attrname)))

1589

parent_pipe.send(('data', client_object.__getattribute__(attrname)))

1902

1590

1903

1591

if command == 'setattr':

1904

1592

attrname = request[1]

1947

1635

return timevalue

1948

1636

1949

1637

1638

def if_nametoindex(interface):

1639

"""Call the C function if_nametoindex(), or equivalent

1640

1641

Note: This function cannot accept a unicode string."""

1642

global if_nametoindex

1643

try:

1644

if_nametoindex = (ctypes.cdll.LoadLibrary

1645

(ctypes.util.find_library("c"))

1646

.if_nametoindex)

1647

except (OSError, AttributeError):

1648

logger.warning("Doing if_nametoindex the hard way")

1649

def if_nametoindex(interface):

1650

"Get an interface index the hard way, i.e. using fcntl()"

1651

SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h

1652

with contextlib.closing(socket.socket()) as s:

1653

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1654

struct.pack(str("16s16x"),

1655

interface))

1656

interface_index = struct.unpack(str("I"),

1657

ifreq[16:20])[0]

1658

return interface_index

1659

return if_nametoindex(interface)

1660

1661

1950

1662

def daemon(nochdir = False, noclose = False):

1951

1663

"""See daemon(3). Standard BSD Unix function.

1952

1664

2007

1719

" system bus interface")

2008

1720

parser.add_argument("--no-ipv6", action="store_false",

2009

1721

dest="use_ipv6", help="Do not use IPv6")

2010

parser.add_argument("--no-restore", action="store_false",

2011

dest="restore", help="Do not restore stored"

2012

" state")

2013

parser.add_argument("--statedir", metavar="DIR",

2014

help="Directory to save/restore state in")

2015

2016

1722

options = parser.parse_args()

2017

1723

2018

1724

if options.check:

2031

1737

"use_dbus": "True",

2032

1738

"use_ipv6": "True",

2033

1739

"debuglevel": "",

2034

"restore": "True",

2035

"statedir": "/var/lib/mandos"

2036

1740

}

2037

1741

2038

1742

# Parse config file for server-global settings

2055

1759

# options, if set.

2056

1760

for option in ("interface", "address", "port", "debug",

2057

1761

"priority", "servicename", "configdir",

2058

"use_dbus", "use_ipv6", "debuglevel", "restore",

2059

"statedir"):

1762

"use_dbus", "use_ipv6", "debuglevel"):

2060

1763

value = getattr(options, option)

2061

1764

if value is not None:

2062

1765

server_settings[option] = value

2074

1777

debuglevel = server_settings["debuglevel"]

2075

1778

use_dbus = server_settings["use_dbus"]

2076

1779

use_ipv6 = server_settings["use_ipv6"]

2077

stored_state_path = os.path.join(server_settings["statedir"],

2078

stored_state_file)

2079

2080

if debug:

2081

initlogger(logging.DEBUG)

2082

else:

2083

if not debuglevel:

2084

initlogger()

2085

else:

2086

level = getattr(logging, debuglevel.upper())

2087

initlogger(level)

2088

1780

2089

1781

if server_settings["servicename"] != "Mandos":

2090

1782

syslogger.setFormatter(logging.Formatter

2093

1785

% server_settings["servicename"]))

2094

1786

2095

1787

# Parse config file with clients

2096

client_config = configparser.SafeConfigParser(Client.client_defaults)

1788

client_defaults = { "timeout": "5m",

1789

"extended_timeout": "15m",

1790

"interval": "2m",

1791

"checker": "fping -q -- %%(host)s",

1792

"host": "",

1793

"approval_delay": "0s",

1794

"approval_duration": "1s",

1795

}

1796

client_config = configparser.SafeConfigParser(client_defaults)

2097

1797

client_config.read(os.path.join(server_settings["configdir"],

2098

1798

"clients.conf"))

2099

1799

2137

1837

if error[0] != errno.EPERM:

2138

1838

raise error

2139

1839

1840

if not debug and not debuglevel:

1841

syslogger.setLevel(logging.WARNING)

1842

console.setLevel(logging.WARNING)

1843

if debuglevel:

1844

level = getattr(logging, debuglevel.upper())

1845

syslogger.setLevel(level)

1846

console.setLevel(level)

1847

2140

1848

if debug:

2141

1849

# Enable all possible GnuTLS debugging

2142

1850

2165

1873

# Close all input and output, do double fork, etc.

2166

1874

daemon()

2167

1875

2168

gobject.threads_init()

2169

2170

1876

global main_loop

2171

1877

# From the Avahi example code

2172

1878

DBusGMainLoop(set_as_default=True )

2175

1881

# End of Avahi example code

2176

1882

if use_dbus:

2177

1883

try:

2178

bus_name = dbus.service.BusName("se.recompile.Mandos",

1884

bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",

2179

1885

bus, do_not_queue=True)

2180

old_bus_name = (dbus.service.BusName

2181

("se.bsnet.fukt.Mandos", bus,

2182

do_not_queue=True))

2183

1886

except dbus.exceptions.NameExistsException as e:

2184

1887

logger.error(unicode(e) + ", disabling D-Bus")

2185

1888

use_dbus = False

2186

1889

server_settings["use_dbus"] = False

2187

1890

tcp_server.use_dbus = False

2188

1891

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2189

service = AvahiServiceToSyslog(name =

2190

server_settings["servicename"],

2191

servicetype = "_mandos._tcp",

2192

protocol = protocol, bus = bus)

1892

service = AvahiService(name = server_settings["servicename"],

1893

servicetype = "_mandos._tcp",

1894

protocol = protocol, bus = bus)

2193

1895

if server_settings["interface"]:

2194

1896

service.interface = (if_nametoindex

2195

1897

(str(server_settings["interface"])))

2199

1901

2200

1902

client_class = Client

2201

1903

if use_dbus:

2202

client_class = functools.partial(ClientDBusTransitional,

2203

bus = bus)

2204

2205

client_settings = Client.config_parser(client_config)

2206

old_client_settings = {}

2207

clients_data = {}

2208

2209

# Get client data and settings from last running state.

2210

if server_settings["restore"]:

2211

try:

2212

with open(stored_state_path, "rb") as stored_state:

2213

clients_data, old_client_settings = (pickle.load

2214

(stored_state))

2215

os.remove(stored_state_path)

2216

except IOError as e:

2217

logger.warning("Could not load persistent state: {0}"

2218

.format(e))

2219

if e.errno != errno.ENOENT:

2220

raise

2221

except EOFError as e:

2222

logger.warning("Could not load persistent state: "

2223

"EOFError: {0}".format(e))

2224

2225

with PGPEngine() as pgp:

2226

for client_name, client in clients_data.iteritems():

2227

# Decide which value to use after restoring saved state.

2228

# We have three different values: Old config file,

2229

# new config file, and saved state.

2230

# New config value takes precedence if it differs from old

2231

# config value, otherwise use saved state.

2232

for name, value in client_settings[client_name].items():

2233

try:

2234

# For each value in new config, check if it

2235

# differs from the old config value (Except for

2236

# the "secret" attribute)

2237

if (name != "secret" and

2238

value != old_client_settings[client_name]

2239

[name]):

2240

client[name] = value

2241

except KeyError:

2242

pass

2243

2244

# Clients who has passed its expire date can still be

2245

# enabled if its last checker was successful. Clients

2246

# whose checker failed before we stored its state is

2247

# assumed to have failed all checkers during downtime.

2248

if client["enabled"]:

2249

if datetime.datetime.utcnow() >= client["expires"]:

2250

if not client["last_checked_ok"]:

2251

logger.warning(

2252

"disabling client {0} - Client never "

2253

"performed a successfull checker"

2254

.format(client["name"]))

2255

client["enabled"] = False

2256

elif client["last_checker_status"] != 0:

2257

logger.warning(

2258

"disabling client {0} - Client "

2259

"last checker failed with error code {1}"

2260

.format(client["name"],

2261

client["last_checker_status"]))

2262

client["enabled"] = False

2263

else:

2264

client["expires"] = (datetime.datetime

2265

.utcnow()

2266

+ client["timeout"])

2267

1904

client_class = functools.partial(ClientDBus, bus = bus)

1905

def client_config_items(config, section):

1906

special_settings = {

1907

"approved_by_default":

1908

lambda: config.getboolean(section,

1909

"approved_by_default"),

1910

}

1911

for name, value in config.items(section):

2268

1912

try:

2269

client["secret"] = (

2270

pgp.decrypt(client["encrypted_secret"],

2271

client_settings[client_name]

2272

["secret"]))

2273

except PGPError:

2274

# If decryption fails, we use secret from new settings

2275

logger.debug("Failed to decrypt {0} old secret"

2276

.format(client_name))

2277

client["secret"] = (

2278

client_settings[client_name]["secret"])

2279

2280

2281

# Add/remove clients based on new changes made to config

2282

for client_name in set(old_client_settings) - set(client_settings):

2283

del clients_data[client_name]

2284

for client_name in set(client_settings) - set(old_client_settings):

2285

clients_data[client_name] = client_settings[client_name]

2286

2287

# Create clients all clients

2288

for client_name, client in clients_data.iteritems():

2289

tcp_server.clients[client_name] = client_class(

2290

name = client_name, settings = client)

2291

1913

yield (name, special_settings[name]())

1914

except KeyError:

1915

yield (name, value)

1916

1917

tcp_server.clients.update(set(

1918

client_class(name = section,

1919

config= dict(client_config_items(

1920

client_config, section)))

1921

for section in client_config.sections()))

2292

1922

if not tcp_server.clients:

2293

1923

logger.warning("No clients defined")

2294

1924

2305

1935

# "pidfile" was never created

2306

1936

pass

2307

1937

del pidfilename

1938

2308

1939

signal.signal(signal.SIGINT, signal.SIG_IGN)

2309

1940

2310

1941

signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())

2315

1946

"""A D-Bus proxy object"""

2316

1947

def __init__(self):

2317

1948

dbus.service.Object.__init__(self, bus, "/")

2318

_interface = "se.recompile.Mandos"

1949

_interface = "se.bsnet.fukt.Mandos"

2319

1950

2320

1951

@dbus.service.signal(_interface, signature="o")

2321

1952

def ClientAdded(self, objpath):

2336

1967

def GetAllClients(self):

2337

1968

"D-Bus method"

2338

1969

return dbus.Array(c.dbus_object_path

2339

for c in

2340

tcp_server.clients.itervalues())

1970

for c in tcp_server.clients)

2341

1971

2342

1972

@dbus.service.method(_interface,

2343

1973

out_signature="a{oa{sv}}")

2345

1975

"D-Bus method"

2346

1976

return dbus.Dictionary(

2347

1977

((c.dbus_object_path, c.GetAll(""))

2348

for c in tcp_server.clients.itervalues()),

1978

for c in tcp_server.clients),

2349

1979

signature="oa{sv}")

2350

1980

2351

1981

@dbus.service.method(_interface, in_signature="o")

2352

1982

def RemoveClient(self, object_path):

2353

1983

"D-Bus method"

2354

for c in tcp_server.clients.itervalues():

1984

for c in tcp_server.clients:

2355

1985

if c.dbus_object_path == object_path:

2356

del tcp_server.clients[c.name]

1986

tcp_server.clients.remove(c)

2357

1987

c.remove_from_connection()

2358

1988

# Don't signal anything except ClientRemoved

2359

1989

c.disable(quiet=True)

2364

1994

2365

1995

del _interface

2366

1996

2367

class MandosDBusServiceTransitional(MandosDBusService):

2368

__metaclass__ = AlternateDBusNamesMetaclass

2369

mandos_dbus_service = MandosDBusServiceTransitional()

1997

mandos_dbus_service = MandosDBusService()

2370

1998

2371

1999

def cleanup():

2372

2000

"Cleanup function; run on exit"

2373

2001

service.cleanup()

2374

2002

2375

multiprocessing.active_children()

2376

if not (tcp_server.clients or client_settings):

2377

return

2378

2379

# Store client before exiting. Secrets are encrypted with key

2380

# based on what config file has. If config file is

2381

# removed/edited, old secret will thus be unrecovable.

2382

clients = {}

2383

with PGPEngine() as pgp:

2384

for client in tcp_server.clients.itervalues():

2385

key = client_settings[client.name]["secret"]

2386

client.encrypted_secret = pgp.encrypt(client.secret,

2387

key)

2388

client_dict = {}

2389

2390

# A list of attributes that can not be pickled

2391

# + secret.

2392

exclude = set(("bus", "changedstate", "secret",

2393

"checker"))

2394

for name, typ in (inspect.getmembers

2395

(dbus.service.Object)):

2396

exclude.add(name)

2397

2398

client_dict["encrypted_secret"] = (client

2399

.encrypted_secret)

2400

for attr in client.client_structure:

2401

if attr not in exclude:

2402

client_dict[attr] = getattr(client, attr)

2403

2404

clients[client.name] = client_dict

2405

del client_settings[client.name]["secret"]

2406

2407

try:

2408

with os.fdopen(os.open(stored_state_path,

2409

os.O_CREAT|os.O_WRONLY|os.O_TRUNC,

2410

0600), "wb") as stored_state:

2411

pickle.dump((clients, client_settings), stored_state)

2412

except (IOError, OSError) as e:

2413

logger.warning("Could not save persistent state: {0}"

2414

.format(e))

2415

if e.errno not in (errno.ENOENT, errno.EACCES):

2416

raise

2417

2418

# Delete all clients, and settings from config

2419

2003

while tcp_server.clients:

2420

name, client = tcp_server.clients.popitem()

2004

client = tcp_server.clients.pop()

2421

2005

if use_dbus:

2422

2006

client.remove_from_connection()

2007

client.disable_hook = None

2423

2008

# Don't signal anything except ClientRemoved

2424

2009

client.disable(quiet=True)

2425

2010

if use_dbus:

2426

2011

# Emit D-Bus signal

2427

mandos_dbus_service.ClientRemoved(client

2428

.dbus_object_path,

2012

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2429

2013

client.name)

2430

client_settings.clear()

2431

2014

2432

2015

atexit.register(cleanup)

2433

2016

2434

for client in tcp_server.clients.itervalues():

2017

for client in tcp_server.clients:

2435

2018

if use_dbus:

2436

2019

# Emit D-Bus signal

2437

2020

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2438

# Need to initiate checking of clients

2439

if client.enabled:

2440

client.init_checker()

2021

client.enable()

2441

2022

2442

2023

tcp_server.enable()

2443

2024

tcp_server.server_activate()

2483

2064

# Must run before the D-Bus bus name gets deregistered

2484

2065

cleanup()

2485

2066

2067

2486

2068

if __name__ == '__main__':

2487

2069

main()