/mandos/release : revision 237.7.392

11

# "AvahiService" class, and some lines in "main".

12

#

13

# Everything else is

14

15

14

15

16

#

17

# This program is free software: you can redistribute it and/or modify

18

# it under the terms of the GNU General Public License as published by

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

from future_builtins import *

37

try:

38

from future_builtins import *

39

except ImportError:

40

pass

38

41

39

import SocketServer as socketserver

42

try:

43

import SocketServer as socketserver

44

except ImportError:

45

import socketserver

40

46

import socket

41

47

import argparse

42

48

import datetime

43

49

import errno

44

import gnutls.crypto

45

import gnutls.connection

46

import gnutls.errors

47

import gnutls.library.functions

48

import gnutls.library.constants

49

import gnutls.library.types

50

import ConfigParser as configparser

50

try:

51

import ConfigParser as configparser

52

except ImportError:

53

import configparser

51

54

import sys

52

55

import re

53

56

import os

62

65

import struct

63

66

import fcntl

64

67

import functools

65

import cPickle as pickle

68

try:

69

import cPickle as pickle

70

except ImportError:

71

import pickle

66

72

import multiprocessing

67

73

import types

68

74

import binascii

69

75

import tempfile

70

76

import itertools

71

77

import collections

78

import codecs

72

79

73

80

import dbus

74

81

import dbus.service

75

import gobject

76

import avahi

82

from gi.repository import GLib

77

83

from dbus.mainloop.glib import DBusGMainLoop

78

84

import ctypes

79

85

import ctypes.util

88

94

except ImportError:

89

95

SO_BINDTODEVICE = None

90

96

91

version = "1.6.0"

97

if sys.version_info.major == 2:

98

str = unicode

99

100

version = "1.7.7"

92

101

stored_state_file = "clients.pickle"

93

102

94

103

logger = logging.getLogger()

95

syslogger = (logging.handlers.SysLogHandler

96

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

97

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

104

syslogger = None

98

105

99

106

try:

100

if_nametoindex = (ctypes.cdll.LoadLibrary

101

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

102

.if_nametoindex)

107

if_nametoindex = ctypes.cdll.LoadLibrary(

108

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

103

109

except (OSError, AttributeError):

110

104

111

def if_nametoindex(interface):

105

112

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

106

113

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

107

114

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

108

115

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

109

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

110

interface))

111

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

112

ifreq[16:20])[0]

116

struct.pack(b"16s16x", interface))

117

interface_index = struct.unpack("I", ifreq[16:20])[0]

113

118

return interface_index

114

119

115

120

121

def copy_function(func):

122

"""Make a copy of a function"""

123

if sys.version_info.major == 2:

124

return types.FunctionType(func.func_code,

125

func.func_globals,

126

func.func_name,

127

func.func_defaults,

128

func.func_closure)

129

else:

130

return types.FunctionType(func.__code__,

131

func.__globals__,

132

func.__name__,

133

func.__defaults__,

134

func.__closure__)

135

136

116

137

def initlogger(debug, level=logging.WARNING):

117

138

"""init logger and add loglevel"""

118

139

140

global syslogger

141

syslogger = (logging.handlers.SysLogHandler(

142

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

143

address = "/dev/log"))

119

144

syslogger.setFormatter(logging.Formatter

120

145

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

121

146

' %(message)s'))

138

163

139

164

class PGPEngine(object):

140

165

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

166

141

167

def __init__(self):

142

168

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

169

self.gpg = "gpg"

170

try:

171

output = subprocess.check_output(["gpgconf"])

172

for line in output.splitlines():

173

name, text, path = line.split(b":")

174

if name == "gpg":

175

self.gpg = path

176

break

177

except OSError as e:

178

if e.errno != errno.ENOENT:

179

raise

143

180

self.gnupgargs = ['--batch',

144

'--home', self.tempdir,

181

'--homedir', self.tempdir,

145

182

'--force-mdc',

146

183

'--quiet',

147

184

'--no-use-agent']

172

209

def password_encode(self, password):

173

210

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

174

211

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

175

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

212

encoded = b"mandos" + binascii.hexlify(password)

213

if len(encoded) > 2048:

214

# GnuPG can't handle long passwords, so encode differently

215

encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

216

.replace(b"\n", b"\\n")

217

.replace(b"\0", b"\\x00"))

218

return encoded

176

219

177

220

def encrypt(self, data, password):

178

221

passphrase = self.password_encode(password)

179

with tempfile.NamedTemporaryFile(dir=self.tempdir

180

) as passfile:

222

with tempfile.NamedTemporaryFile(

223

dir=self.tempdir) as passfile:

181

224

passfile.write(passphrase)

182

225

passfile.flush()

183

proc = subprocess.Popen(['gpg', '--symmetric',

226

proc = subprocess.Popen([self.gpg, '--symmetric',

184

227

'--passphrase-file',

185

228

passfile.name]

186

229

+ self.gnupgargs,

194

237

195

238

def decrypt(self, data, password):

196

239

passphrase = self.password_encode(password)

197

with tempfile.NamedTemporaryFile(dir = self.tempdir

198

) as passfile:

240

with tempfile.NamedTemporaryFile(

241

dir = self.tempdir) as passfile:

199

242

passfile.write(passphrase)

200

243

passfile.flush()

201

proc = subprocess.Popen(['gpg', '--decrypt',

244

proc = subprocess.Popen([self.gpg, '--decrypt',

202

245

'--passphrase-file',

203

246

passfile.name]

204

247

+ self.gnupgargs,

205

248

stdin = subprocess.PIPE,

206

249

stdout = subprocess.PIPE,

207

250

stderr = subprocess.PIPE)

208

decrypted_plaintext, err = proc.communicate(input

209

= data)

251

decrypted_plaintext, err = proc.communicate(input = data)

210

252

if proc.returncode != 0:

211

253

raise PGPError(err)

212

254

return decrypted_plaintext

213

255

256

# Pretend that we have an Avahi module

257

class Avahi(object):

258

"""This isn't so much a class as it is a module-like namespace.

259

It is instantiated once, and simulates having an Avahi module."""

260

IF_UNSPEC = -1 # avahi-common/address.h

261

PROTO_UNSPEC = -1 # avahi-common/address.h

262

PROTO_INET = 0 # avahi-common/address.h

263

PROTO_INET6 = 1 # avahi-common/address.h

264

DBUS_NAME = "org.freedesktop.Avahi"

265

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

266

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

267

DBUS_PATH_SERVER = "/"

268

def string_array_to_txt_array(self, t):

269

return dbus.Array((dbus.ByteArray(s.encode("utf-8"))

270

for s in t), signature="ay")

271

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

272

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

273

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

274

SERVER_INVALID = 0 # avahi-common/defs.h

275

SERVER_REGISTERING = 1 # avahi-common/defs.h

276

SERVER_RUNNING = 2 # avahi-common/defs.h

277

SERVER_COLLISION = 3 # avahi-common/defs.h

278

SERVER_FAILURE = 4 # avahi-common/defs.h

279

avahi = Avahi()

214

280

215

281

class AvahiError(Exception):

216

282

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

217

283

self.value = value

218

super(AvahiError, self).__init__(value, *args, **kwargs)

219

def __unicode__(self):

220

return unicode(repr(self.value))

284

return super(AvahiError, self).__init__(value, *args,

285

**kwargs)

286

221

287

222

288

class AvahiServiceError(AvahiError):

223

289

pass

224

290

291

225

292

class AvahiGroupError(AvahiError):

226

293

pass

227

294

247

314

bus: dbus.SystemBus()

248

315

"""

249

316

250

def __init__(self, interface = avahi.IF_UNSPEC, name = None,

251

servicetype = None, port = None, TXT = None,

252

domain = "", host = "", max_renames = 32768,

253

protocol = avahi.PROTO_UNSPEC, bus = None):

317

def __init__(self,

318

interface = avahi.IF_UNSPEC,

319

name = None,

320

servicetype = None,

321

port = None,

322

TXT = None,

323

domain = "",

324

host = "",

325

max_renames = 32768,

326

protocol = avahi.PROTO_UNSPEC,

327

bus = None):

254

328

self.interface = interface

255

329

self.name = name

256

330

self.type = servicetype

266

340

self.bus = bus

267

341

self.entry_group_state_changed_match = None

268

342

269

def rename(self):

343

def rename(self, remove=True):

270

344

"""Derived from the Avahi example code"""

271

345

if self.rename_count >= self.max_renames:

272

346

logger.critical("No suitable Zeroconf service name found"

273

347

" after %i retries, exiting.",

274

348

self.rename_count)

275

349

raise AvahiServiceError("Too many renames")

276

self.name = unicode(self.server

277

.GetAlternativeServiceName(self.name))

350

self.name = str(

351

self.server.GetAlternativeServiceName(self.name))

352

self.rename_count += 1

278

353

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

279

354

self.name)

280

self.remove()

355

if remove:

356

self.remove()

281

357

try:

282

358

self.add()

283

359

except dbus.exceptions.DBusException as error:

284

logger.critical("D-Bus Exception", exc_info=error)

285

self.cleanup()

286

os._exit(1)

287

self.rename_count += 1

360

if (error.get_dbus_name()

361

== "org.freedesktop.Avahi.CollisionError"):

362

logger.info("Local Zeroconf service name collision.")

363

return self.rename(remove=False)

364

else:

365

logger.critical("D-Bus Exception", exc_info=error)

366

self.cleanup()

367

os._exit(1)

288

368

289

369

def remove(self):

290

370

"""Derived from the Avahi example code"""

328

408

self.rename()

329

409

elif state == avahi.ENTRY_GROUP_FAILURE:

330

410

logger.critical("Avahi: Error in group state changed %s",

331

unicode(error))

332

raise AvahiGroupError("State changed: {0!s}"

333

.format(error))

411

str(error))

412

raise AvahiGroupError("State changed: {!s}".format(error))

334

413

335

414

def cleanup(self):

336

415

"""Derived from the Avahi example code"""

346

425

def server_state_changed(self, state, error=None):

347

426

"""Derived from the Avahi example code"""

348

427

logger.debug("Avahi server state change: %i", state)

349

bad_states = { avahi.SERVER_INVALID:

350

"Zeroconf server invalid",

351

avahi.SERVER_REGISTERING: None,

352

avahi.SERVER_COLLISION:

353

"Zeroconf server name collision",

354

avahi.SERVER_FAILURE:

355

"Zeroconf server failure" }

428

bad_states = {

429

avahi.SERVER_INVALID: "Zeroconf server invalid",

430

avahi.SERVER_REGISTERING: None,

431

avahi.SERVER_COLLISION: "Zeroconf server name collision",

432

avahi.SERVER_FAILURE: "Zeroconf server failure",

433

}

356

434

if state in bad_states:

357

435

if bad_states[state] is not None:

358

436

if error is None:

361

439

logger.error(bad_states[state] + ": %r", error)

362

440

self.cleanup()

363

441

elif state == avahi.SERVER_RUNNING:

364

self.add()

442

try:

443

self.add()

444

except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

== "org.freedesktop.Avahi.CollisionError"):

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

logger.critical("D-Bus Exception", exc_info=error)

452

self.cleanup()

453

os._exit(1)

365

454

else:

366

455

if error is None:

367

456

logger.debug("Unknown state: %r", state)

377

466

follow_name_owner_changes=True),

378

467

avahi.DBUS_INTERFACE_SERVER)

379

468

self.server.connect_to_signal("StateChanged",

380

self.server_state_changed)

469

self.server_state_changed)

381

470

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

382

471

383

472

384

473

class AvahiServiceToSyslog(AvahiService):

385

def rename(self):

474

def rename(self, *args, **kwargs):

386

475

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

387

ret = AvahiService.rename(self)

388

syslogger.setFormatter(logging.Formatter

389

('Mandos ({0}) [%(process)d]:'

390

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

391

.format(self.name)))

476

ret = AvahiService.rename(self, *args, **kwargs)

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

392

480

return ret

393

481

394

395

def timedelta_to_milliseconds(td):

396

"Convert a datetime.timedelta() to milliseconds"

397

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

398

+ (td.seconds * 1000)

399

+ (td.microseconds // 1000))

400

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

"""This isn't so much a class as it is a module-like namespace.

485

It is instantiated once, and simulates having a GnuTLS module."""

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

# Need to use class name "GnuTLS" here, since this method is

492

# called before the assignment to the "gnutls" global variable

493

# happens.

494

if GnuTLS.check_version(self._need_version) is None:

495

raise GnuTLS.Error("Needs GnuTLS {} or later"

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

# all from the gnutls/gnutls.h C header file.

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

# We need to use the class name "GnuTLS" here, since this

536

# exception might be raised from within GnuTLS.__init__,

537

# which is called before the assignment to the "gnutls"

538

# global variable has happened.

539

def __init__(self, message = None, code = None, args=()):

540

# Default usage is by a message string, but if a return

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

return super(GnuTLS.Error, self).__init__(

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

def __init__(self, socket, credentials = None):

565

self._c_object = gnutls.session_t()

566

gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)

567

gnutls.set_default_priority(self._c_object)

568

gnutls.transport_set_ptr(self._c_object, socket.fileno())

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

gnutls.credentials_set(self._c_object, credentials.type,

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

595

596

# Error handling functions

597

def _error_code(result):

598

"""A function to raise exceptions on errors, suitable

599

for the 'restype' attribute on ctypes functions"""

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

"""A function to retry on some errors, suitable

608

for the 'errcheck' attribute on ctypes functions"""

609

while result < 0:

610

if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

# all from the gnutls/gnutls.h C header file.

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

# All the function declarations below are from gnutls/openpgp.h

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

# Create the global "gnutls" object, simulating a module

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

"""This function is meant to be called by multiprocessing.Process

740

741

This function runs func(*args, **kwargs), and writes the resulting

742

return value on the provided multiprocessing.Connection.

743

"""

744

connection.send(func(*args, **kwargs))

745

connection.close()

401

746

402

747

class Client(object):

403

748

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

409

754

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

410

755

to see if the client lives.

411

756

'None' if no process is running.

412

checker_callback_tag: a gobject event source tag, or None

757

checker_callback_tag: a GLib event source tag, or None

413

758

checker_command: string; External command which is run to check

414

759

if client lives. %() expansions are done at

415

760

runtime with vars(self) as dict, so that for

416

761

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

417

checker_initiator_tag: a gobject event source tag, or None

762

checker_initiator_tag: a GLib event source tag, or None

418

763

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

419

764

client_structure: Object describing what attributes a client has

420

765

and is used for storing the client at exit

421

766

current_checker_command: string; current running checker_command

422

disable_initiator_tag: a gobject event source tag, or None

767

disable_initiator_tag: a GLib event source tag, or None

423

768

enabled: bool()

424

769

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

425

770

uniquely identify the client

430

775

last_checker_status: integer between 0 and 255 reflecting exit

431

776

status of last checker. -1 reflects crashed

432

777

checker, -2 means no checker completed yet.

778

last_checker_signal: The signal which killed the last checker, if

779

last_checker_status is -1

433

780

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

434

781

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

435

782

D-Bus identifiers

448

795

"fingerprint", "host", "interval",

449

796

"last_approval_request", "last_checked_ok",

450

797

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

451

client_defaults = { "timeout": "PT5M",

452

"extended_timeout": "PT15M",

453

"interval": "PT2M",

454

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

455

"host": "",

456

"approval_delay": "PT0S",

457

"approval_duration": "PT1S",

458

"approved_by_default": "True",

459

"enabled": "True",

460

}

461

462

def timeout_milliseconds(self):

463

"Return the 'timeout' attribute in milliseconds"

464

return timedelta_to_milliseconds(self.timeout)

465

466

def extended_timeout_milliseconds(self):

467

"Return the 'extended_timeout' attribute in milliseconds"

468

return timedelta_to_milliseconds(self.extended_timeout)

469

470

def interval_milliseconds(self):

471

"Return the 'interval' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.interval)

473

474

def approval_delay_milliseconds(self):

475

return timedelta_to_milliseconds(self.approval_delay)

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

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

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

476

809

477

810

@staticmethod

478

811

def config_parser(config):

494

827

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

495

828

"enabled")

496

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

497

833

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

498

834

.replace(" ", ""))

499

835

if "secret" in section:

500

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

836

client["secret"] = codecs.decode(section["secret"]

837

.encode("utf-8"),

838

"base64")

501

839

elif "secfile" in section:

502

840

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

503

841

(section["secfile"])),

504

842

"rb") as secfile:

505

843

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

506

844

else:

507

raise TypeError("No secret or secfile for section {0}"

845

raise TypeError("No secret or secfile for section {}"

508

846

.format(section))

509

847

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

510

848

client["extended_timeout"] = string_to_delta(

527

865

server_settings = {}

528

866

self.server_settings = server_settings

529

867

# adding all client settings

530

for setting, value in settings.iteritems():

868

for setting, value in settings.items():

531

869

setattr(self, setting, value)

532

870

533

871

if self.enabled:

541

879

self.expires = None

542

880

543

881

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

544

# Uppercase and remove spaces from fingerprint for later

545

# comparison purposes with return value from the fingerprint()

546

# function

547

882

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

548

883

self.created = settings.get("created",

549

884

datetime.datetime.utcnow())

556

891

self.current_checker_command = None

557

892

self.approved = None

558

893

self.approvals_pending = 0

559

self.changedstate = (multiprocessing_manager

560

.Condition(multiprocessing_manager

561

.Lock()))

562

self.client_structure = [attr for attr in

563

self.__dict__.iterkeys()

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

564

898

if not attr.startswith("_")]

565

899

self.client_structure.append("client_structure")

566

900

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

901

for name, t in inspect.getmembers(

902

type(self), lambda obj: isinstance(obj, property)):

571

903

if not name.startswith("_"):

572

904

self.client_structure.append(name)

573

905

594

926

if not quiet:

595

927

logger.info("Disabling client %s", self.name)

596

928

if getattr(self, "disable_initiator_tag", None) is not None:

597

gobject.source_remove(self.disable_initiator_tag)

929

GLib.source_remove(self.disable_initiator_tag)

598

930

self.disable_initiator_tag = None

599

931

self.expires = None

600

932

if getattr(self, "checker_initiator_tag", None) is not None:

601

gobject.source_remove(self.checker_initiator_tag)

933

GLib.source_remove(self.checker_initiator_tag)

602

934

self.checker_initiator_tag = None

603

935

self.stop_checker()

604

936

self.enabled = False

605

937

if not quiet:

606

938

self.send_changedstate()

607

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

939

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

608

940

return False

609

941

610

942

def __del__(self):

614

946

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

615

947

# and every interval from then on.

616

948

if self.checker_initiator_tag is not None:

617

gobject.source_remove(self.checker_initiator_tag)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

int(self.interval.total_seconds() * 1000),

952

self.start_checker)

621

953

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

622

954

if self.disable_initiator_tag is not None:

623

gobject.source_remove(self.disable_initiator_tag)

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

int(self.timeout.total_seconds() * 1000), self.disable)

627

958

# Also start a new checker *right now*.

628

959

self.start_checker()

629

960

630

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

961

def checker_callback(self, source, condition, connection,

962

command):

631

963

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

632

964

self.checker_callback_tag = None

633

965

self.checker = None

634

if os.WIFEXITED(condition):

635

self.last_checker_status = os.WEXITSTATUS(condition)

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

636

973

if self.last_checker_status == 0:

637

974

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

638

975

vars(self))

639

976

self.checked_ok()

640

977

else:

641

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

642

vars(self))

978

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

643

979

else:

644

980

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

645

982

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

646

983

vars(self))

984

return False

647

985

648

986

def checked_ok(self):

649

987

"""Assert that the client has been seen, alive and well."""

650

988

self.last_checked_ok = datetime.datetime.utcnow()

651

989

self.last_checker_status = 0

990

self.last_checker_signal = None

652

991

self.bump_timeout()

653

992

654

993

def bump_timeout(self, timeout=None):

656

995

if timeout is None:

657

996

timeout = self.timeout

658

997

if self.disable_initiator_tag is not None:

659

gobject.source_remove(self.disable_initiator_tag)

998

GLib.source_remove(self.disable_initiator_tag)

660

999

self.disable_initiator_tag = None

661

1000

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

int(timeout.total_seconds() * 1000), self.disable)

665

1003

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

666

1004

667

1005

def need_approval(self):

681

1019

# than 'timeout' for the client to be disabled, which is as it

682

1020

# should be.

683

1021

684

# If a checker exists, make sure it is not a zombie

685

try:

686

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

687

except (AttributeError, OSError) as error:

688

if (isinstance(error, OSError)

689

and error.errno != errno.ECHILD):

690

raise error

691

else:

692

if pid:

693

logger.warning("Checker was a zombie")

694

gobject.source_remove(self.checker_callback_tag)

695

self.checker_callback(pid, status,

696

self.current_checker_command)

1022

if self.checker is not None and not self.checker.is_alive():

1023

logger.warning("Checker was not alive; joining")

1024

self.checker.join()

1025

self.checker = None

697

1026

# Start a new checker if needed

698

1027

if self.checker is None:

699

1028

# Escape attributes for the shell

700

escaped_attrs = dict(

701

(attr, re.escape(unicode(getattr(self, attr))))

702

for attr in

703

self.runtime_expansions)

1029

escaped_attrs = {

1030

attr: re.escape(str(getattr(self, attr)))

1031

for attr in self.runtime_expansions }

704

1032

try:

705

1033

command = self.checker_command % escaped_attrs

706

1034

except TypeError as error:

707

1035

logger.error('Could not format string "%s"',

708

self.checker_command, exc_info=error)

709

return True # Try again later

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

710

1039

self.current_checker_command = command

711

try:

712

logger.info("Starting checker %r for %s",

713

command, self.name)

714

# We don't need to redirect stdout and stderr, since

715

# in normal mode, that is already done by daemon(),

716

# and in debug mode we don't want to. (Stdin is

717

# always replaced by /dev/null.)

718

# The exception is when not debugging but nevertheless

719

# running in the foreground; use the previously

720

# created wnull.

721

popen_args = {}

722

if (not self.server_settings["debug"]

723

and self.server_settings["foreground"]):

724

popen_args.update({"stdout": wnull,

725

"stderr": wnull })

726

self.checker = subprocess.Popen(command,

727

close_fds=True,

728

shell=True, cwd="/",

729

**popen_args)

730

except OSError as error:

731

logger.error("Failed to start subprocess",

732

exc_info=error)

733

return True

734

self.checker_callback_tag = (gobject.child_watch_add

735

(self.checker.pid,

736

self.checker_callback,

737

data=command))

738

# The checker may have completed before the gobject

739

# watch was added. Check for this.

740

try:

741

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

742

except OSError as error:

743

if error.errno == errno.ECHILD:

744

# This should never happen

745

logger.error("Child process vanished",

746

exc_info=error)

747

return True

748

raise

749

if pid:

750

gobject.source_remove(self.checker_callback_tag)

751

self.checker_callback(pid, status, command)

752

# Re-run this periodically if run by gobject.timeout_add

1040

logger.info("Starting checker %r for %s", command,

1041

self.name)

1042

# We don't need to redirect stdout and stderr, since

1043

# in normal mode, that is already done by daemon(),

1044

# and in debug mode we don't want to. (Stdin is

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

args = (pipe[1], subprocess.call, command),

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

pipe[0].fileno(), GLib.IO_IN,

1064

self.checker_callback, pipe[0], command)

1065

# Re-run this periodically if run by GLib.timeout_add

753

1066

return True

754

1067

755

1068

def stop_checker(self):

756

1069

"""Force the checker process, if any, to stop."""

757

1070

if self.checker_callback_tag:

758

gobject.source_remove(self.checker_callback_tag)

1071

GLib.source_remove(self.checker_callback_tag)

759

1072

self.checker_callback_tag = None

760

1073

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

761

1074

return

762

1075

logger.debug("Stopping checker for %(name)s", vars(self))

763

try:

764

self.checker.terminate()

765

#time.sleep(0.5)

766

#if self.checker.poll() is None:

767

# self.checker.kill()

768

except OSError as error:

769

if error.errno != errno.ESRCH: # No such process

770

raise

1076

self.checker.terminate()

771

1077

self.checker = None

772

1078

773

1079

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

776

1084

"""Decorators for marking methods of a DBusObjectWithProperties to

777

1085

become properties on the D-Bus.

778

1086

787

1095

# "Set" method, so we fail early here:

788

1096

if byte_arrays and signature != "ay":

789

1097

raise ValueError("Byte arrays not supported for non-'ay'"

790

" signature {0!r}".format(signature))

1098

" signature {!r}".format(signature))

1099

791

1100

def decorator(func):

792

1101

func._dbus_is_property = True

793

1102

func._dbus_interface = dbus_interface

798

1107

func._dbus_name = func._dbus_name[:-14]

799

1108

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

800

1109

return func

1110

801

1111

return decorator

802

1112

803

1113

812

1122

"org.freedesktop.DBus.Property.EmitsChangedSignal":

813

1123

"false"}

814

1124

"""

1125

815

1126

def decorator(func):

816

1127

func._dbus_is_interface = True

817

1128

func._dbus_interface = dbus_interface

818

1129

func._dbus_name = dbus_interface

819

1130

return func

1131

820

1132

return decorator

821

1133

822

1134

824

1136

"""Decorator to annotate D-Bus methods, signals or properties

825

1137

Usage:

826

1138

1139

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true",

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

827

1142

@dbus_service_property("org.example.Interface", signature="b",

828

1143

access="r")

829

@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",

830

"org.freedesktop.DBus.Property."

831

"EmitsChangedSignal": "false"})

832

1144

def Property_dbus_property(self):

833

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

834

1148

"""

1149

835

1150

def decorator(func):

836

1151

func._dbus_annotations = annotations

837

1152

return func

1153

838

1154

return decorator

839

1155

840

1156

841

1157

class DBusPropertyException(dbus.exceptions.DBusException):

842

1158

"""A base class for D-Bus property-related exceptions

843

1159

"""

844

def __unicode__(self):

845

return unicode(str(self))

1160

pass

846

1161

847

1162

848

1163

class DBusPropertyAccessException(DBusPropertyException):

857

1172

pass

858

1173

859

1174

860

class DBusObjectWithProperties(dbus.service.Object):

861

"""A D-Bus object with properties.

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

862

1177

863

Classes inheriting from this can use the dbus_service_property

864

decorator to expose methods as D-Bus properties. It exposes the

865

standard Get(), Set(), and GetAll() methods on the D-Bus.

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

866

1180

"""

867

1181

868

1182

@staticmethod

872

1186

If called like _is_dbus_thing("method") it returns a function

873

1187

suitable for use as predicate to inspect.getmembers().

874

1188

"""

875

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

1189

return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),

876

1190

False)

877

1191

878

1192

def _get_all_dbus_things(self, thing):

879

1193

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

880

1194

"""

881

return ((getattr(athing.__get__(self), "_dbus_name",

882

name),

1195

return ((getattr(athing.__get__(self), "_dbus_name", name),

883

1196

athing.__get__(self))

884

1197

for cls in self.__class__.__mro__

885

1198

for name, athing in

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

1199

inspect.getmembers(cls, self._is_dbus_thing(thing)))

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

xmlstring = dbus.service.Object.Introspect(self, object_path,

1211

connection)

1212

try:

1213

document = xml.dom.minidom.parseString(xmlstring)

1214

1215

for if_tag in document.getElementsByTagName("interface"):

1216

# Add annotation tags

1217

for typ in ("method", "signal"):

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

if (name == tag.getAttribute("name")

1223

and prop._dbus_interface

1224

== if_tag.getAttribute("name")):

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

if name == if_tag.getAttribute("name")

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

for cn in if_tag.getElementsByTagName("method"):

1249

if cn.getAttribute("name") == "Introspect":

1250

for arg in cn.getElementsByTagName("arg"):

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

xmlstring = document.toxml("utf-8")

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

logger.error("Failed to override Introspection method",

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1265

"""A D-Bus object with properties.

1266

1267

Classes inheriting from this can use the dbus_service_property

1268

decorator to expose methods as D-Bus properties. It exposes the

1269

standard Get(), Set(), and GetAll() methods on the D-Bus.

1270

"""

888

1271

889

1272

def _get_dbus_property(self, interface_name, property_name):

890

1273

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

891

1274

property with the specified name and interface.

892

1275

"""

893

for cls in self.__class__.__mro__:

894

for name, value in (inspect.getmembers

895

(cls,

896

self._is_dbus_thing("property"))):

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

cls, self._is_dbus_thing("property")):

897

1279

if (value._dbus_name == property_name

898

1280

and value._dbus_interface == interface_name):

899

1281

return value.__get__(self)

900

1282

901

1283

# No such property

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

905

906

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",

1284

raise DBusPropertyNotFound("{}:{}.{}".format(

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

"""Get a sequence of all interfaces supported by an object"""

1290

return (name for name in set(getattr(getattr(x, attr),

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

907

1298

out_signature="v")

908

1299

def Get(self, interface_name, property_name):

909

1300

"""Standard D-Bus property Get() method, see D-Bus standard.

927

1318

# The byte_arrays option is not supported yet on

928

1319

# signatures other than "ay".

929

1320

if prop._dbus_signature != "ay":

930

raise ValueError

1321

raise ValueError("Byte arrays not supported for non-"

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

931

1324

value = dbus.ByteArray(b''.join(chr(byte)

932

1325

for byte in value))

933

1326

prop(value)

934

1327

935

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="s",

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

936

1330

out_signature="a{sv}")

937

1331

def GetAll(self, interface_name):

938

1332

"""Standard D-Bus property GetAll() method, see D-Bus

953

1347

if not hasattr(value, "variant_level"):

954

1348

properties[name] = value

955

1349

continue

956

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

957

value.variant_level+1)

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

958

1352

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

959

1353

1354

@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")

1355

def PropertiesChanged(self, interface_name, changed_properties,

1356

invalidated_properties):

1357

"""Standard D-Bus PropertiesChanged() signal, see D-Bus

1358

standard.

1359

"""

1360

pass

1361

960

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

961

1363

out_signature="s",

962

1364

path_keyword='object_path',

966

1368

967

1369

Inserts property tags and interface annotation tags.

968

1370

"""

969

xmlstring = dbus.service.Object.Introspect(self, object_path,

970

connection)

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

971

1374

try:

972

1375

document = xml.dom.minidom.parseString(xmlstring)

1376

973

1377

def make_tag(document, name, prop):

974

1378

e = document.createElement("property")

975

1379

e.setAttribute("name", name)

976

1380

e.setAttribute("type", prop._dbus_signature)

977

1381

e.setAttribute("access", prop._dbus_access)

978

1382

return e

1383

979

1384

for if_tag in document.getElementsByTagName("interface"):

980

1385

# Add property tags

981

1386

for tag in (make_tag(document, name, prop)

984

1389

if prop._dbus_interface

985

1390

== if_tag.getAttribute("name")):

986

1391

if_tag.appendChild(tag)

987

# Add annotation tags

988

for typ in ("method", "signal", "property"):

989

for tag in if_tag.getElementsByTagName(typ):

990

annots = dict()

991

for name, prop in (self.

992

_get_all_dbus_things(typ)):

993

if (name == tag.getAttribute("name")

994

and prop._dbus_interface

995

== if_tag.getAttribute("name")):

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1001

ann_tag = document.createElement(

1002

"annotation")

1003

ann_tag.setAttribute("name", name)

1004

ann_tag.setAttribute("value", value)

1005

tag.appendChild(ann_tag)

1006

# Add interface annotation tags

1007

for annotation, value in dict(

1008

itertools.chain.from_iterable(

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1012

if name == if_tag.getAttribute("name")

1013

)).iteritems():

1014

ann_tag = document.createElement("annotation")

1015

ann_tag.setAttribute("name", annotation)

1016

ann_tag.setAttribute("value", value)

1017

if_tag.appendChild(ann_tag)

1392

# Add annotation tags for properties

1393

for tag in if_tag.getElementsByTagName("property"):

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

if (name == tag.getAttribute("name")

1398

and prop._dbus_interface

1399

== if_tag.getAttribute("name")):

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

1018

1408

# Add the names to the return values for the

1019

1409

# "org.freedesktop.DBus.Properties" methods

1020

1410

if (if_tag.getAttribute("name")

1038

1428

exc_info=error)

1039

1429

return xmlstring

1040

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

"""A D-Bus object with an ObjectManager.

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

Note: No signals are sent automatically; they must be sent

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

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

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

signature = "oa{sa{sv}}")

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

document = xml.dom.minidom.parseString(xmlstring)

1477

1478

for if_tag in document.getElementsByTagName("interface"):

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

for cn in if_tag.getElementsByTagName("method"):

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

for arg in cn.getElementsByTagName("arg"):

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

xmlstring = document.toxml("utf-8")

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

logger.error("Failed to override Introspection method",

1497

exc_info = error)

1498

return xmlstring

1041

1499

1042

1500

def datetime_to_dbus(dt, variant_level=0):

1043

1501

"""Convert a UTC datetime.datetime() to a D-Bus type."""

1044

1502

if dt is None:

1045

1503

return dbus.String("", variant_level = variant_level)

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1504

return dbus.String(dt.isoformat(), variant_level=variant_level)

1048

1505

1049

1506

1050

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1070

1527

(from DBusObjectWithProperties) and interfaces (from the

1071

1528

dbus_interface_annotations decorator).

1072

1529

"""

1530

1073

1531

def wrapper(cls):

1074

1532

for orig_interface_name, alt_interface_name in (

1075

alt_interface_names.iteritems()):

1533

alt_interface_names.items()):

1076

1534

attr = {}

1077

1535

interface_names = set()

1078

1536

# Go though all attributes of the class

1080

1538

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

1081

1539

# with the wrong interface name

1082

1540

if (not hasattr(attribute, "_dbus_interface")

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

1085

1543

continue

1086

1544

# Create an alternate D-Bus interface name based on

1087

1545

# the current name

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1091

1548

interface_names.add(alt_interface)

1092

1549

# Is this a D-Bus signal?

1093

1550

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

1094

1551

# Extract the original non-method undecorated

1095

1552

# function by black magic

1096

nonmethod_func = (dict(

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

1097

1555

zip(attribute.func_code.co_freevars,

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

1100

1563

# Create a new, but exactly alike, function

1101

1564

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

1102

1565

# with the alternate D-Bus interface name

1103

new_function = (dbus.service.signal

1104

(alt_interface,

1105

attribute._dbus_signature)

1106

(types.FunctionType(

1107

nonmethod_func.func_code,

1108

nonmethod_func.func_globals,

1109

nonmethod_func.func_name,

1110

nonmethod_func.func_defaults,

1111

nonmethod_func.func_closure)))

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1112

1570

# Copy annotations, if any

1113

1571

try:

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1116

1574

except AttributeError:

1117

1575

pass

1118

1576

# Define a creator of a function to call both the

1123

1581

"""This function is a scope container to pass

1124

1582

func1 and func2 to the "call_both" function

1125

1583

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1126

1586

def call_both(*args, **kwargs):

1127

1587

"""This function will emit two D-Bus

1128

1588

signals by calling func1 and func2"""

1129

1589

func1(*args, **kwargs)

1130

1590

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

for name, attr in inspect.getmembers(func2):

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1131

1596

return call_both

1132

1597

# Create the "call_both" function and add it to

1133

1598

# the class

1138

1603

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

1139

1604

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

1140

1605

# to the class.

1141

attr[attrname] = (dbus.service.method

1142

(alt_interface,

1143

attribute._dbus_in_signature,

1144

attribute._dbus_out_signature)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1151

1612

# Copy annotations, if any

1152

1613

try:

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1155

1616

except AttributeError:

1156

1617

pass

1157

1618

# Is this a D-Bus property?

1160

1621

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

1161

1622

# property with the alternate D-Bus interface

1162

1623

# name. Add it to the class.

1163

attr[attrname] = (dbus_service_property

1164

(alt_interface,

1165

attribute._dbus_signature,

1166

attribute._dbus_access,

1167

attribute

1168

._dbus_get_args_options

1169

["byte_arrays"])

1170

(types.FunctionType

1171

(attribute.func_code,

1172

attribute.func_globals,

1173

attribute.func_name,

1174

attribute.func_defaults,

1175

attribute.func_closure)))

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1176

1630

# Copy annotations, if any

1177

1631

try:

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1180

1634

except AttributeError:

1181

1635

pass

1182

1636

# Is this a D-Bus interface?

1185

1639

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

1186

1640

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

1187

1641

# to the class.

1188

attr[attrname] = (dbus_interface_annotations

1189

(alt_interface)

1190

(types.FunctionType

1191

(attribute.func_code,

1192

attribute.func_globals,

1193

attribute.func_name,

1194

attribute.func_defaults,

1195

attribute.func_closure)))

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1196

1645

if deprecate:

1197

1646

# Deprecate all alternate interfaces

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1647

iname="_AlternateDBusNames_interface_annotation{}"

1199

1648

for interface_name in interface_names:

1649

1200

1650

@dbus_interface_annotations(interface_name)

1201

1651

def func(self):

1202

1652

return { "org.freedesktop.DBus.Deprecated":

1203

"true" }

1653

"true" }

1204

1654

# Find an unused name

1205

1655

for aname in (iname.format(i)

1206

1656

for i in itertools.count()):

1210

1660

if interface_names:

1211

1661

# Replace the class with a new subclass of it with

1212

1662

# methods, signals, etc. as created above.

1213

cls = type(b"{0}Alternate".format(cls.__name__),

1214

(cls,), attr)

1663

if sys.version_info.major == 2:

1664

cls = type(b"{}Alternate".format(cls.__name__),

1665

(cls, ), attr)

1666

else:

1667

cls = type("{}Alternate".format(cls.__name__),

1668

(cls, ), attr)

1215

1669

return cls

1670

1216

1671

return wrapper

1217

1672

1218

1673

1219

1674

@alternate_dbus_interfaces({"se.recompile.Mandos":

1220

"se.bsnet.fukt.Mandos"})

1675

"se.bsnet.fukt.Mandos"})

1221

1676

class ClientDBus(Client, DBusObjectWithProperties):

1222

1677

"""A Client class using D-Bus

1223

1678

1227

1682

"""

1228

1683

1229

1684

runtime_expansions = (Client.runtime_expansions

1230

+ ("dbus_object_path",))

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

1231

1688

1232

1689

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

1233

1690

1236

1693

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

1237

1694

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

1238

1695

# the D-Bus

1239

client_object_name = unicode(self.name).translate(

1696

client_object_name = str(self.name).translate(

1240

1697

{ord("."): ord("_"),

1241

1698

ord("-"): ord("_")})

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1244

1701

DBusObjectWithProperties.__init__(self, self.bus,

1245

1702

self.dbus_object_path)

1246

1703

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

1250

1709

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

1251

1710

its changes to DBus.

1252

1711

1257

1716

to the D-Bus. Default: no transform

1258

1717

variant_level: D-Bus variant level. Default: 1

1259

1718

"""

1260

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

1719

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

1720

1261

1721

def setter(self, value):

1262

1722

if hasattr(self, "dbus_object_path"):

1263

1723

if (not hasattr(self, attrname) or

1264

1724

type_func(getattr(self, attrname, None))

1265

1725

!= type_func(value)):

1266

dbus_value = transform_func(type_func(value),

1267

variant_level

1268

=variant_level)

1269

self.PropertyChanged(dbus.String(dbus_name),

1270

dbus_value)

1726

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1730

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1734

self.PropertyChanged(dbus.String(dbus_name),

1735

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

dbus.Dictionary({ dbus.String(dbus_name):

1739

dbus_value }),

1740

dbus.Array())

1271

1741

setattr(self, attrname, value)

1272

1742

1273

1743

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

1279

1749

enabled = notifychangeproperty(dbus.Boolean, "Enabled")

1280

1750

last_enabled = notifychangeproperty(datetime_to_dbus,

1281

1751

"LastEnabled")

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1285

1755

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1286

1756

"LastCheckedOK")

1287

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1290

1760

datetime_to_dbus, "LastApprovalRequest")

1291

1761

approved_by_default = notifychangeproperty(dbus.Boolean,

1292

1762

"ApprovedByDefault")

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

type_func = lambda td: td.total_seconds() * 1000)

1297

1766

approval_duration = notifychangeproperty(

1298

1767

dbus.UInt64, "ApprovalDuration",

1299

type_func = timedelta_to_milliseconds)

1768

type_func = lambda td: td.total_seconds() * 1000)

1300

1769

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

type_func = lambda td: td.total_seconds() * 1000)

1304

1773

extended_timeout = notifychangeproperty(

1305

1774

dbus.UInt64, "ExtendedTimeout",

1306

type_func = timedelta_to_milliseconds)

1307

interval = notifychangeproperty(dbus.UInt64,

1308

"Interval",

1309

type_func =

1310

timedelta_to_milliseconds)

1775

type_func = lambda td: td.total_seconds() * 1000)

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

type_func = lambda td: td.total_seconds() * 1000)

1311

1779

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

1780

secret = notifychangeproperty(dbus.ByteArray, "Secret",

1781

invalidate_only=True)

1312

1782

1313

1783

del notifychangeproperty

1314

1784

1321

1791

DBusObjectWithProperties.__del__(self, *args, **kwargs)

1322

1792

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

1323

1793

1324

def checker_callback(self, pid, condition, command,

1325

*args, **kwargs):

1326

self.checker_callback_tag = None

1327

self.checker = None

1328

if os.WIFEXITED(condition):

1329

exitstatus = os.WEXITSTATUS(condition)

1794

def checker_callback(self, source, condition,

1795

connection, command, *args, **kwargs):

1796

ret = Client.checker_callback(self, source, condition,

1797

connection, command, *args,

1798

**kwargs)

1799

exitstatus = self.last_checker_status

1800

if exitstatus >= 0:

1330

1801

# Emit D-Bus signal

1331

1802

self.CheckerCompleted(dbus.Int16(exitstatus),

1332

dbus.Int64(condition),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1333

1805

dbus.String(command))

1334

1806

else:

1335

1807

# Emit D-Bus signal

1336

1808

self.CheckerCompleted(dbus.Int16(-1),

1337

dbus.Int64(condition),

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1338

1813

dbus.String(command))

1339

1340

return Client.checker_callback(self, pid, condition, command,

1341

*args, **kwargs)

1814

return ret

1342

1815

1343

1816

def start_checker(self, *args, **kwargs):

1344

old_checker = self.checker

1345

if self.checker is not None:

1346

old_checker_pid = self.checker.pid

1347

else:

1348

old_checker_pid = None

1817

old_checker_pid = getattr(self.checker, "pid", None)

1349

1818

r = Client.start_checker(self, *args, **kwargs)

1350

1819

# Only if new checker process was started

1351

1820

if (self.checker is not None

1360

1829

1361

1830

def approve(self, value=True):

1362

1831

self.approved = value

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1832

GLib.timeout_add(int(self.approval_duration.total_seconds()

1833

* 1000), self._reset_approved)

1366

1834

self.send_changedstate()

1367

1835

1368

1836

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1370

1837

1371

1838

## Interfaces

1372

1839

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

return { "org.freedesktop.DBus.Property.EmitsChangedSignal":

1376

"false"}

1377

1378

1840

## Signals

1379

1841

1380

1842

# CheckerCompleted - signal

1390

1852

pass

1391

1853

1392

1854

# PropertyChanged - signal

1855

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1393

1856

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

1394

1857

def PropertyChanged(self, property, value):

1395

1858

"D-Bus signal"

1429

1892

self.checked_ok()

1430

1893

1431

1894

# Enable - method

1895

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1432

1896

@dbus.service.method(_interface)

1433

1897

def Enable(self):

1434

1898

"D-Bus method"

1435

1899

self.enable()

1436

1900

1437

1901

# StartChecker - method

1902

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1438

1903

@dbus.service.method(_interface)

1439

1904

def StartChecker(self):

1440

1905

"D-Bus method"

1441

1906

self.start_checker()

1442

1907

1443

1908

# Disable - method

1909

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1444

1910

@dbus.service.method(_interface)

1445

1911

def Disable(self):

1446

1912

"D-Bus method"

1447

1913

self.disable()

1448

1914

1449

1915

# StopChecker - method

1916

@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})

1450

1917

@dbus.service.method(_interface)

1451

1918

def StopChecker(self):

1452

1919

self.stop_checker()

1459

1926

return dbus.Boolean(bool(self.approvals_pending))

1460

1927

1461

1928

# ApprovedByDefault - property

1462

@dbus_service_property(_interface, signature="b",

1929

@dbus_service_property(_interface,

1930

signature="b",

1463

1931

access="readwrite")

1464

1932

def ApprovedByDefault_dbus_property(self, value=None):

1465

1933

if value is None: # get

1467

1935

self.approved_by_default = bool(value)

1468

1936

1469

1937

# ApprovalDelay - property

1470

@dbus_service_property(_interface, signature="t",

1938

@dbus_service_property(_interface,

1939

signature="t",

1471

1940

access="readwrite")

1472

1941

def ApprovalDelay_dbus_property(self, value=None):

1473

1942

if value is None: # get

1474

return dbus.UInt64(self.approval_delay_milliseconds())

1943

return dbus.UInt64(self.approval_delay.total_seconds()

1944

* 1000)

1475

1945

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

1476

1946

1477

1947

# ApprovalDuration - property

1478

@dbus_service_property(_interface, signature="t",

1948

@dbus_service_property(_interface,

1949

signature="t",

1479

1950

access="readwrite")

1480

1951

def ApprovalDuration_dbus_property(self, value=None):

1481

1952

if value is None: # get

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

1953

return dbus.UInt64(self.approval_duration.total_seconds()

1954

* 1000)

1484

1955

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

1485

1956

1486

1957

# Name - property

1958

@dbus_annotations(

1959

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1487

1960

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

1488

1961

def Name_dbus_property(self):

1489

1962

return dbus.String(self.name)

1490

1963

1491

1964

# Fingerprint - property

1965

@dbus_annotations(

1966

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1492

1967

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

1493

1968

def Fingerprint_dbus_property(self):

1494

1969

return dbus.String(self.fingerprint)

1495

1970

1496

1971

# Host - property

1497

@dbus_service_property(_interface, signature="s",

1972

@dbus_service_property(_interface,

1973

signature="s",

1498

1974

access="readwrite")

1499

1975

def Host_dbus_property(self, value=None):

1500

1976

if value is None: # get

1501

1977

return dbus.String(self.host)

1502

self.host = unicode(value)

1978

self.host = str(value)

1503

1979

1504

1980

# Created - property

1981

@dbus_annotations(

1982

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})

1505

1983

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

1506

1984

def Created_dbus_property(self):

1507

1985

return datetime_to_dbus(self.created)

1512

1990

return datetime_to_dbus(self.last_enabled)

1513

1991

1514

1992

# Enabled - property

1515

@dbus_service_property(_interface, signature="b",

1993

@dbus_service_property(_interface,

1994

signature="b",

1516

1995

access="readwrite")

1517

1996

def Enabled_dbus_property(self, value=None):

1518

1997

if value is None: # get

1523

2002

self.disable()

1524

2003

1525

2004

# LastCheckedOK - property

1526

@dbus_service_property(_interface, signature="s",

2005

@dbus_service_property(_interface,

2006

signature="s",

1527

2007

access="readwrite")

1528

2008

def LastCheckedOK_dbus_property(self, value=None):

1529

2009

if value is not None:

1532

2012

return datetime_to_dbus(self.last_checked_ok)

1533

2013

1534

2014

# LastCheckerStatus - property

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

2015

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

1537

2016

def LastCheckerStatus_dbus_property(self):

1538

2017

return dbus.Int16(self.last_checker_status)

1539

2018

1548

2027

return datetime_to_dbus(self.last_approval_request)

1549

2028

1550

2029

# Timeout - property

1551

@dbus_service_property(_interface, signature="t",

2030

@dbus_service_property(_interface,

2031

signature="t",

1552

2032

access="readwrite")

1553

2033

def Timeout_dbus_property(self, value=None):

1554

2034

if value is None: # get

1555

return dbus.UInt64(self.timeout_milliseconds())

2035

return dbus.UInt64(self.timeout.total_seconds() * 1000)

1556

2036

old_timeout = self.timeout

1557

2037

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

1558

2038

# Reschedule disabling

1566

2046

if (getattr(self, "disable_initiator_tag", None)

1567

2047

is None):

1568

2048

return

1569

gobject.source_remove(self.disable_initiator_tag)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

int((self.expires - now).total_seconds() * 1000),

2052

self.disable)

1574

2053

1575

2054

# ExtendedTimeout - property

1576

@dbus_service_property(_interface, signature="t",

2055

@dbus_service_property(_interface,

2056

signature="t",

1577

2057

access="readwrite")

1578

2058

def ExtendedTimeout_dbus_property(self, value=None):

1579

2059

if value is None: # get

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

2060

return dbus.UInt64(self.extended_timeout.total_seconds()

2061

* 1000)

1581

2062

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

1582

2063

1583

2064

# Interval - property

1584

@dbus_service_property(_interface, signature="t",

2065

@dbus_service_property(_interface,

2066

signature="t",

1585

2067

access="readwrite")

1586

2068

def Interval_dbus_property(self, value=None):

1587

2069

if value is None: # get

1588

return dbus.UInt64(self.interval_milliseconds())

2070

return dbus.UInt64(self.interval.total_seconds() * 1000)

1589

2071

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

1590

2072

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

1591

2073

return

1592

2074

if self.enabled:

1593

2075

# Reschedule checker run

1594

gobject.source_remove(self.checker_initiator_tag)

1595

self.checker_initiator_tag = (gobject.timeout_add

1596

(value, self.start_checker))

1597

self.start_checker() # Start one now, too

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

1598

2080

1599

2081

# Checker - property

1600

@dbus_service_property(_interface, signature="s",

2082

@dbus_service_property(_interface,

2083

signature="s",

1601

2084

access="readwrite")

1602

2085

def Checker_dbus_property(self, value=None):

1603

2086

if value is None: # get

1604

2087

return dbus.String(self.checker_command)

1605

self.checker_command = unicode(value)

2088

self.checker_command = str(value)

1606

2089

1607

2090

# CheckerRunning - property

1608

@dbus_service_property(_interface, signature="b",

2091

@dbus_service_property(_interface,

2092

signature="b",

1609

2093

access="readwrite")

1610

2094

def CheckerRunning_dbus_property(self, value=None):

1611

2095

if value is None: # get

1616

2100

self.stop_checker()

1617

2101

1618

2102

# ObjectPath - property

2103

@dbus_annotations(

2104

{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const",

2105

"org.freedesktop.DBus.Deprecated": "true"})

1619

2106

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

1620

2107

def ObjectPath_dbus_property(self):

1621

2108

return self.dbus_object_path # is already a dbus.ObjectPath

1622

2109

1623

2110

# Secret = property

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

2111

@dbus_annotations(

2112

{"org.freedesktop.DBus.Property.EmitsChangedSignal":

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1626

2118

def Secret_dbus_property(self, value):

1627

self.secret = str(value)

2119

self.secret = bytes(value)

1628

2120

1629

2121

del _interface

1630

2122

1634

2126

self._pipe = child_pipe

1635

2127

self._pipe.send(('init', fpr, address))

1636

2128

if not self._pipe.recv():

1637

raise KeyError()

2129

raise KeyError(fpr)

1638

2130

1639

2131

def __getattribute__(self, name):

1640

2132

if name == '_pipe':

1644

2136

if data[0] == 'data':

1645

2137

return data[1]

1646

2138

if data[0] == 'function':

2139

1647

2140

def func(*args, **kwargs):

1648

2141

self._pipe.send(('funcall', name, args, kwargs))

1649

2142

return self._pipe.recv()[1]

2143

1650

2144

return func

1651

2145

1652

2146

def __setattr__(self, name, value):

1664

2158

def handle(self):

1665

2159

with contextlib.closing(self.server.child_pipe) as child_pipe:

1666

2160

logger.info("TCP connection from: %s",

1667

unicode(self.client_address))

2161

str(self.client_address))

1668

2162

logger.debug("Pipe FD: %d",

1669

2163

self.server.child_pipe.fileno())

1670

2164

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1675

1676

# Note: gnutls.connection.X509Credentials is really a

1677

# generic GnuTLS certificate credentials object so long as

1678

# no X.509 keys are added to it. Therefore, we can use it

1679

# here despite using OpenPGP certificates.

2165

session = gnutls.ClientSession(self.request)

1680

2166

1681

2167

#priority = ':'.join(("NONE", "+VERS-TLS1.1",

1682

2168

# "+AES-256-CBC", "+SHA1",

1686

2172

priority = self.server.gnutls_priority

1687

2173

if priority is None:

1688

2174

priority = "NORMAL"

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1692

2177

1693

2178

# Start communication using the Mandos protocol

1694

2179

# Get protocol number

1696

2181

logger.debug("Protocol version: %r", line)

1697

2182

try:

1698

2183

if int(line.strip().split()[0]) > 1:

1699

raise RuntimeError

2184

raise RuntimeError(line)

1700

2185

except (ValueError, IndexError, RuntimeError) as error:

1701

2186

logger.error("Unknown protocol version: %s", error)

1702

2187

return

1704

2189

# Start GnuTLS connection

1705

2190

try:

1706

2191

session.handshake()

1707

except gnutls.errors.GNUTLSError as error:

2192

except gnutls.Error as error:

1708

2193

logger.warning("Handshake failed: %s", error)

1709

2194

# Do not run session.bye() here: the session is not

1710

2195

# established. Just abandon the request.

1714

2199

approval_required = False

1715

2200

try:

1716

2201

try:

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1719

except (TypeError,

1720

gnutls.errors.GNUTLSError) as error:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1721

2205

logger.warning("Bad certificate: %s", error)

1722

2206

return

1723

2207

logger.debug("Fingerprint: %s", fpr)

1736

2220

while True:

1737

2221

if not client.enabled:

1738

2222

logger.info("Client %s is disabled",

1739

client.name)

2223

client.name)

1740

2224

if self.server.use_dbus:

1741

2225

# Emit D-Bus signal

1742

2226

client.Rejected("Disabled")

1751

2235

if self.server.use_dbus:

1752

2236

# Emit D-Bus signal

1753

2237

client.NeedApproval(

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1756

2240

else:

1757

2241

logger.warning("Client %s was not approved",

1758

2242

client.name)

1764

2248

#wait until timeout or approved

1765

2249

time = datetime.datetime.now()

1766

2250

client.changedstate.acquire()

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

2251

client.changedstate.wait(delay.total_seconds())

1770

2252

client.changedstate.release()

1771

2253

time2 = datetime.datetime.now()

1772

2254

if (time2 - time) >= delay:

1783

2265

else:

1784

2266

delay -= time2 - time

1785

2267

1786

sent_size = 0

1787

while sent_size < len(client.secret):

1788

try:

1789

sent = session.send(client.secret[sent_size:])

1790

except gnutls.errors.GNUTLSError as error:

1791

logger.warning("gnutls send failed",

1792

exc_info=error)

1793

return

1794

logger.debug("Sent: %d, remaining: %d",

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1797

sent_size += sent

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1798

2274

1799

2275

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

1800

2276

# bump the timeout using extended_timeout

1808

2284

client.approvals_pending -= 1

1809

2285

try:

1810

2286

session.bye()

1811

except gnutls.errors.GNUTLSError as error:

2287

except gnutls.Error as error:

1812

2288

logger.warning("GnuTLS bye failed",

1813

2289

exc_info=error)

1814

2290

1816

2292

def peer_certificate(session):

1817

2293

"Return the peer's OpenPGP certificate as a bytestring"

1818

2294

# If not an OpenPGP certificate...

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1821

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1822

# ...do the normal thing

1823

return session.peer_certificate

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1824

2299

list_size = ctypes.c_uint(1)

1825

cert_list = (gnutls.library.functions

1826

.gnutls_certificate_get_peers

2300

cert_list = (gnutls.certificate_get_peers

1827

2301

(session._c_object, ctypes.byref(list_size)))

1828

2302

if not bool(cert_list) and list_size.value != 0:

1829

raise gnutls.errors.GNUTLSError("error getting peer"

1830

" certificate")

2303

raise gnutls.Error("error getting peer certificate")

1831

2304

if list_size.value == 0:

1832

2305

return None

1833

2306

cert = cert_list[0]

1837

2310

def fingerprint(openpgp):

1838

2311

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1839

2312

# New GnuTLS "datum" with the OpenPGP public key

1840

datum = (gnutls.library.types

1841

.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),

1842

ctypes.POINTER

1843

(ctypes.c_ubyte)),

1844

ctypes.c_uint(len(openpgp))))

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

1845

2317

# New empty GnuTLS certificate

1846

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1849

2320

# Import the OpenPGP public key into the certificate

1850

(gnutls.library.functions

1851

.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),

1852

gnutls.library.constants

1853

.GNUTLS_OPENPGP_FMT_RAW))

2321

gnutls.openpgp_crt_import(crt, ctypes.byref(datum),

2322

gnutls.OPENPGP_FMT_RAW)

1854

2323

# Verify the self signature in the key

1855

2324

crtverify = ctypes.c_uint()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1859

2327

if crtverify.value != 0:

1860

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1863

2330

# New buffer for the fingerprint

1864

2331

buf = ctypes.create_string_buffer(20)

1865

2332

buf_len = ctypes.c_size_t()

1866

2333

# Get the fingerprint from the certificate into the buffer

1867

(gnutls.library.functions

1868

.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

1869

ctypes.byref(buf_len)))

2334

gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),

2335

ctypes.byref(buf_len))

1870

2336

# Deinit the certificate

1871

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2337

gnutls.openpgp_crt_deinit(crt)

1872

2338

# Convert the buffer to a Python bytestring

1873

2339

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

1874

2340

# Convert the bytestring to hexadecimal notation

1878

2344

1879

2345

class MultiprocessingMixIn(object):

1880

2346

"""Like socketserver.ThreadingMixIn, but with multiprocessing"""

2347

1881

2348

def sub_process_main(self, request, address):

1882

2349

try:

1883

2350

self.finish_request(request, address)

1895

2362

1896

2363

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1897

2364

""" adds a pipe to the MixIn """

2365

1898

2366

def process_request(self, request, client_address):

1899

2367

"""Overrides and wraps the original process_request().

1900

2368

1909

2377

1910

2378

def add_pipe(self, parent_pipe, proc):

1911

2379

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

1912

raise NotImplementedError

2380

raise NotImplementedError()

1913

2381

1914

2382

1915

2383

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1921

2389

interface: None or a network interface name (string)

1922

2390

use_ipv6: Boolean; to use IPv6 or not

1923

2391

"""

2392

1924

2393

def __init__(self, server_address, RequestHandlerClass,

1925

interface=None, use_ipv6=True, socketfd=None):

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

1926

2397

"""If socketfd is set, use that file descriptor instead of

1927

2398

creating a new one with socket.socket().

1928

2399

"""

1969

2440

self.interface)

1970

2441

else:

1971

2442

try:

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

str(self.interface + '\0'))

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

(self.interface + "\0").encode("utf-8"))

1975

2446

except socket.error as error:

1976

2447

if error.errno == errno.EPERM:

1977

2448

logger.error("No permission to bind to"

1995

2466

self.server_address = (any_address,

1996

2467

self.server_address[1])

1997

2468

elif not self.server_address[1]:

1998

self.server_address = (self.server_address[0],

1999

0)

2469

self.server_address = (self.server_address[0], 0)

2000

2470

# if self.interface:

2001

2471

# self.server_address = (self.server_address[0],

2002

2472

# 0, # port

2014

2484

gnutls_priority GnuTLS priority string

2015

2485

use_dbus: Boolean; to emit D-Bus signals or not

2016

2486

2017

Assumes a gobject.MainLoop event loop.

2487

Assumes a GLib.MainLoop event loop.

2018

2488

"""

2489

2019

2490

def __init__(self, server_address, RequestHandlerClass,

2020

interface=None, use_ipv6=True, clients=None,

2021

gnutls_priority=None, use_dbus=True, socketfd=None):

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

2022

2497

self.enabled = False

2023

2498

self.clients = clients

2024

2499

if self.clients is None:

2030

2505

interface = interface,

2031

2506

use_ipv6 = use_ipv6,

2032

2507

socketfd = socketfd)

2508

2033

2509

def server_activate(self):

2034

2510

if self.enabled:

2035

2511

return socketserver.TCPServer.server_activate(self)

2039

2515

2040

2516

def add_pipe(self, parent_pipe, proc):

2041

2517

# Call "handle_ipc" for both data and EOF events

2042

gobject.io_add_watch(parent_pipe.fileno(),

2043

gobject.IO_IN | gobject.IO_HUP,

2044

functools.partial(self.handle_ipc,

2045

parent_pipe =

2046

parent_pipe,

2047

proc = proc))

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

2048

2524

2049

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

2050

proc = None, client_object=None):

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

2051

2529

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

2052

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

2530

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

2053

2531

# Wait for other process to exit

2054

2532

proc.join()

2055

2533

return False

2062

2540

fpr = request[1]

2063

2541

address = request[2]

2064

2542

2065

for c in self.clients.itervalues():

2543

for c in self.clients.values():

2066

2544

if c.fingerprint == fpr:

2067

2545

client = c

2068

2546

break

2076

2554

parent_pipe.send(False)

2077

2555

return False

2078

2556

2079

gobject.io_add_watch(parent_pipe.fileno(),

2080

gobject.IO_IN | gobject.IO_HUP,

2081

functools.partial(self.handle_ipc,

2082

parent_pipe =

2083

parent_pipe,

2084

proc = proc,

2085

client_object =

2086

client))

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe = parent_pipe,

2562

proc = proc,

2563

client_object = client))

2087

2564

parent_pipe.send(True)

2088

2565

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

2089

2566

# same fileno

2095

2572

2096

2573

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

2097

2574

funcname)(*args,

2098

**kwargs)))

2575

**kwargs)))

2099

2576

2100

2577

if command == 'getattr':

2101

2578

attrname = request[1]

2102

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

2104

2582

else:

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2583

parent_pipe.send((

2584

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

2107

2585

2108

2586

if command == 'setattr':

2109

2587

attrname = request[1]

2140

2618

# avoid excessive use of external libraries.

2141

2619

2142

2620

# New type for defining tokens, syntax, and semantics all-in-one

2143

Token = collections.namedtuple("Token",

2144

("regexp", # To match token; if

2145

# "value" is not None,

2146

# must have a "group"

2147

# containing digits

2148

"value", # datetime.timedelta or

2149

# None

2150

"followers")) # Tokens valid after

2151

# this token

2621

Token = collections.namedtuple("Token", (

2622

"regexp", # To match token; if "value" is not None, must have

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2152

2626

# RFC 3339 "duration" tokens, syntax, and semantics; taken from

2153

2627

# the "duration" ABNF definition in RFC 3339, Appendix A.

2154

2628

token_end = Token(re.compile(r"$"), None, frozenset())

2155

2629

token_second = Token(re.compile(r"(\d+)S"),

2156

2630

datetime.timedelta(seconds=1),

2157

frozenset((token_end,)))

2631

frozenset((token_end, )))

2158

2632

token_minute = Token(re.compile(r"(\d+)M"),

2159

2633

datetime.timedelta(minutes=1),

2160

2634

frozenset((token_second, token_end)))

2176

2650

frozenset((token_month, token_end)))

2177

2651

token_week = Token(re.compile(r"(\d+)W"),

2178

2652

datetime.timedelta(weeks=1),

2179

frozenset((token_end,)))

2653

frozenset((token_end, )))

2180

2654

token_duration = Token(re.compile(r"P"), None,

2181

2655

frozenset((token_year, token_month,

2182

2656

token_day, token_time,

2183

token_week))),

2657

token_week)))

2184

2658

# Define starting values

2185

2659

value = datetime.timedelta() # Value so far

2186

2660

found_token = None

2187

followers = frozenset(token_duration,) # Following valid tokens

2661

followers = frozenset((token_duration, )) # Following valid tokens

2188

2662

s = duration # String left to parse

2189

2663

# Loop until end token is found

2190

2664

while found_token is not token_end:

2207

2681

break

2208

2682

else:

2209

2683

# No currently valid tokens were found

2210

raise ValueError("Invalid RFC 3339 duration")

2684

raise ValueError("Invalid RFC 3339 duration: {!r}"

2685

.format(duration))

2211

2686

# End token found

2212

2687

return value

2213

2688

2237

2712

timevalue = datetime.timedelta(0)

2238

2713

for s in interval.split():

2239

2714

try:

2240

suffix = unicode(s[-1])

2715

suffix = s[-1]

2241

2716

value = int(s[:-1])

2242

2717

if suffix == "d":

2243

2718

delta = datetime.timedelta(value)

2250

2725

elif suffix == "w":

2251

2726

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

2252

2727

else:

2253

raise ValueError("Unknown suffix {0!r}"

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2728

raise ValueError("Unknown suffix {!r}".format(suffix))

2729

except IndexError as e:

2256

2730

raise ValueError(*(e.args))

2257

2731

timevalue += delta

2258

2732

return timevalue

2274

2748

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2275

2749

if not stat.S_ISCHR(os.fstat(null).st_mode):

2276

2750

raise OSError(errno.ENODEV,

2277

"{0} not a character device"

2751

"{} not a character device"

2278

2752

.format(os.devnull))

2279

2753

os.dup2(null, sys.stdin.fileno())

2280

2754

os.dup2(null, sys.stdout.fileno())

2290

2764

2291

2765

parser = argparse.ArgumentParser()

2292

2766

parser.add_argument("-v", "--version", action="version",

2293

version = "%(prog)s {0}".format(version),

2767

version = "%(prog)s {}".format(version),

2294

2768

help="show version number and exit")

2295

2769

parser.add_argument("-i", "--interface", metavar="IF",

2296

2770

help="Bind to interface IF")

2329

2803

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

2330

2804

parser.add_argument("--foreground", action="store_true",

2331

2805

help="Run in foreground", default=None)

2806

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

2807

dest="zeroconf", help="Do not use Zeroconf",

2808

default=None)

2332

2809

2333

2810

options = parser.parse_args()

2334

2811

2335

2812

if options.check:

2336

2813

import doctest

2337

doctest.testmod()

2338

sys.exit()

2814

fail_count, test_count = doctest.testmod()

2815

sys.exit(os.EX_OK if fail_count == 0 else 1)

2339

2816

2340

2817

# Default values for config file for server-global settings

2341

2818

server_defaults = { "interface": "",

2343

2820

"port": "",

2344

2821

"debug": "False",

2345

2822

"priority":

2346

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224",

2823

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"

2824

":+SIGN-DSA-SHA256",

2347

2825

"servicename": "Mandos",

2348

2826

"use_dbus": "True",

2349

2827

"use_ipv6": "True",

2352

2830

"socket": "",

2353

2831

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

2354

2832

"foreground": "False",

2355

}

2833

"zeroconf": "True",

2834

}

2356

2835

2357

2836

# Parse config file for server-global settings

2358

2837

server_config = configparser.SafeConfigParser(server_defaults)

2359

2838

del server_defaults

2360

server_config.read(os.path.join(options.configdir,

2361

"mandos.conf"))

2839

server_config.read(os.path.join(options.configdir, "mandos.conf"))

2362

2840

# Convert the SafeConfigParser object to a dict

2363

2841

server_settings = server_config.defaults()

2364

2842

# Use the appropriate methods on the non-string config options

2382

2860

# Override the settings from the config file with command line

2383

2861

# options, if set.

2384

2862

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

2385

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

2386

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

2387

"statedir", "socket", "foreground"):

2863

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

2864

"use_ipv6", "debuglevel", "restore", "statedir",

2865

"socket", "foreground", "zeroconf"):

2388

2866

value = getattr(options, option)

2389

2867

if value is not None:

2390

2868

server_settings[option] = value

2391

2869

del options

2392

2870

# Force all strings to be unicode

2393

2871

for option in server_settings.keys():

2394

if type(server_settings[option]) is str:

2395

server_settings[option] = unicode(server_settings[option])

2872

if isinstance(server_settings[option], bytes):

2873

server_settings[option] = (server_settings[option]

2874

.decode("utf-8"))

2396

2875

# Force all boolean options to be boolean

2397

2876

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2398

"foreground"):

2877

"foreground", "zeroconf"):

2399

2878

server_settings[option] = bool(server_settings[option])

2400

2879

# Debug implies foreground

2401

2880

if server_settings["debug"]:

2404

2883

2405

2884

##################################################################

2406

2885

2886

if (not server_settings["zeroconf"]

2887

and not (server_settings["port"]

2888

or server_settings["socket"] != "")):

2889

parser.error("Needs port or socket to work without Zeroconf")

2890

2407

2891

# For convenience

2408

2892

debug = server_settings["debug"]

2409

2893

debuglevel = server_settings["debuglevel"]

2412

2896

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

2413

2897

stored_state_file)

2414

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2415

2900

2416

2901

if debug:

2417

2902

initlogger(debug, logging.DEBUG)

2423

2908

initlogger(debug, level)

2424

2909

2425

2910

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

2426

syslogger.setFormatter(logging.Formatter

2427

('Mandos ({0}) [%(process)d]:'

2428

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

2429

.format(server_settings

2430

["servicename"])))

2911

syslogger.setFormatter(

2912

logging.Formatter('Mandos ({}) [%(process)d]:'

2913

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

2914

server_settings["servicename"])))

2431

2915

2432

2916

# Parse config file with clients

2433

2917

client_config = configparser.SafeConfigParser(Client

2438

2922

global mandos_dbus_service

2439

2923

mandos_dbus_service = None

2440

2924

2441

tcp_server = MandosServer((server_settings["address"],

2442

server_settings["port"]),

2443

ClientHandler,

2444

interface=(server_settings["interface"]

2445

or None),

2446

use_ipv6=use_ipv6,

2447

gnutls_priority=

2448

server_settings["priority"],

2449

use_dbus=use_dbus,

2450

socketfd=(server_settings["socket"]

2451

or None))

2925

socketfd = None

2926

if server_settings["socket"] != "":

2927

socketfd = server_settings["socket"]

2928

tcp_server = MandosServer(

2929

(server_settings["address"], server_settings["port"]),

2930

ClientHandler,

2931

interface=(server_settings["interface"] or None),

2932

use_ipv6=use_ipv6,

2933

gnutls_priority=server_settings["priority"],

2934

use_dbus=use_dbus,

2935

socketfd=socketfd)

2452

2936

if not foreground:

2453

pidfilename = "/var/run/mandos.pid"

2937

pidfilename = "/run/mandos.pid"

2938

if not os.path.isdir("/run/."):

2939

pidfilename = "/var/run/mandos.pid"

2454

2940

pidfile = None

2455

2941

try:

2456

pidfile = open(pidfilename, "w")

2942

pidfile = codecs.open(pidfilename, "w", encoding="utf-8")

2457

2943

except IOError as e:

2458

2944

logger.error("Could not open file %r", pidfilename,

2459

2945

exc_info=e)

2460

2946

2461

for name in ("_mandos", "mandos", "nobody"):

2947

for name, group in (("_mandos", "_mandos"),

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2462

2950

try:

2463

2951

uid = pwd.getpwnam(name).pw_uid

2464

gid = pwd.getpwnam(name).pw_gid

2952

gid = pwd.getpwnam(group).pw_gid

2465

2953

break

2466

2954

except KeyError:

2467

2955

continue

2471

2959

try:

2472

2960

os.setgid(gid)

2473

2961

os.setuid(uid)

2962

if debug:

2963

logger.debug("Did setuid/setgid to {}:{}".format(uid,

2964

gid))

2474

2965

except OSError as error:

2966

logger.warning("Failed to setuid/setgid to {}:{}: {}"

2967

.format(uid, gid, os.strerror(error.errno)))

2475

2968

if error.errno != errno.EPERM:

2476

raise error

2969

raise

2477

2970

2478

2971

if debug:

2479

2972

# Enable all possible GnuTLS debugging

2480

2973

2481

2974

# "Use a log level over 10 to enable all debugging options."

2482

2975

# - GnuTLS manual

2483

gnutls.library.functions.gnutls_global_set_log_level(11)

2976

gnutls.global_set_log_level(11)

2484

2977

2485

@gnutls.library.types.gnutls_log_func

2978

@gnutls.log_func

2486

2979

def debug_gnutls(level, string):

2487

2980

logger.debug("GnuTLS: %s", string[:-1])

2488

2981

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2982

gnutls.global_set_log_function(debug_gnutls)

2491

2983

2492

2984

# Redirect stdin so all checkers get /dev/null

2493

2985

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2500

2992

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

2501

2993

daemon()

2502

2994

2503

# multiprocessing will use threads, so before we use gobject we

2504

# need to inform gobject that threads will be used.

2505

gobject.threads_init()

2995

# multiprocessing will use threads, so before we use GLib we need

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2506

2998

2507

2999

global main_loop

2508

3000

# From the Avahi example code

2509

3001

DBusGMainLoop(set_as_default=True)

2510

main_loop = gobject.MainLoop()

3002

main_loop = GLib.MainLoop()

2511

3003

bus = dbus.SystemBus()

2512

3004

# End of Avahi example code

2513

3005

if use_dbus:

2514

3006

try:

2515

3007

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

2516

bus, do_not_queue=True)

2517

old_bus_name = (dbus.service.BusName

2518

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

2519

do_not_queue=True))

2520

except dbus.exceptions.NameExistsException as e:

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

2521

3014

logger.error("Disabling D-Bus:", exc_info=e)

2522

3015

use_dbus = False

2523

3016

server_settings["use_dbus"] = False

2524

3017

tcp_server.use_dbus = False

2525

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2526

service = AvahiServiceToSyslog(name =

2527

server_settings["servicename"],

2528

servicetype = "_mandos._tcp",

2529

protocol = protocol, bus = bus)

2530

if server_settings["interface"]:

2531

service.interface = (if_nametoindex

2532

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

3018

if zeroconf:

3019

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3020

service = AvahiServiceToSyslog(

3021

name = server_settings["servicename"],

3022

servicetype = "_mandos._tcp",

3023

protocol = protocol,

3024

bus = bus)

3025

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

server_settings["interface"].encode("utf-8"))

2533

3028

2534

3029

global multiprocessing_manager

2535

3030

multiprocessing_manager = multiprocessing.Manager()

2554

3049

if server_settings["restore"]:

2555

3050

try:

2556

3051

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

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

pickle.load(stored_state, encoding = "bytes"))

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

clients_data = { (key.decode("utf-8")

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

value = { (k.decode("utf-8")

3069

if isinstance(k, bytes) else k): v

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

for k in ("name", "host"):

3081

if isinstance(value[k], bytes):

3082

value[k] = value[k].decode("utf-8")

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

if isinstance(value["host"], bytes):

3095

value["host"] = (value["host"]

3096

.decode("utf-8"))

2559

3097

os.remove(stored_state_path)

2560

3098

except IOError as e:

2561

3099

if e.errno == errno.ENOENT:

2562

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

2563

.format(os.strerror(e.errno)))

3100

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

3101

" {}".format(os.strerror(e.errno)))

2564

3102

else:

2565

3103

logger.critical("Could not load persistent state:",

2566

3104

exc_info=e)

2567

3105

raise

2568

3106

except EOFError as e:

2569

3107

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

2570

"EOFError:", exc_info=e)

3108

"EOFError:",

3109

exc_info=e)

2571

3110

2572

3111

with PGPEngine() as pgp:

2573

for client_name, client in clients_data.iteritems():

3112

for client_name, client in clients_data.items():

2574

3113

# Skip removed clients

2575

3114

if client_name not in client_settings:

2576

3115

continue

2585

3124

# For each value in new config, check if it

2586

3125

# differs from the old config value (Except for

2587

3126

# the "secret" attribute)

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

2591

3130

client[name] = value

2592

3131

except KeyError:

2593

3132

pass

2594

3133

2595

3134

# Clients who has passed its expire date can still be

2596

# enabled if its last checker was successful. Clients

3135

# enabled if its last checker was successful. A Client

2597

3136

# whose checker succeeded before we stored its state is

2598

3137

# assumed to have successfully run all checkers during

2599

3138

# downtime.

2601

3140

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

2602

3141

if not client["last_checked_ok"]:

2603

3142

logger.warning(

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

2607

3146

client["enabled"] = False

2608

3147

elif client["last_checker_status"] != 0:

2609

3148

logger.warning(

2610

"disabling client {0} - Client "

2611

"last checker failed with error code {1}"

2612

.format(client_name,

2613

client["last_checker_status"]))

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

2614

3154

client["enabled"] = False

2615

3155

else:

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

2619

3159

logger.debug("Last checker succeeded,"

2620

" keeping {0} enabled"

2621

.format(client_name))

3160

" keeping {} enabled".format(

3161

client_name))

2622

3162

try:

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

2627

3166

except PGPError:

2628

3167

# If decryption fails, we use secret from new settings

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

3168

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

3169

client_name))

3170

client["secret"] = (client_settings[client_name]

3171

["secret"])

2633

3172

2634

3173

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

2635

3174

for client_name in (set(old_client_settings)

2640

3179

clients_data[client_name] = client_settings[client_name]

2641

3180

2642

3181

# Create all client objects

2643

for client_name, client in clients_data.iteritems():

3182

for client_name, client in clients_data.items():

2644

3183

tcp_server.clients[client_name] = client_class(

2645

name = client_name, settings = client,

3184

name = client_name,

3185

settings = client,

2646

3186

server_settings = server_settings)

2647

3187

2648

3188

if not tcp_server.clients:

2650

3190

2651

3191

if not foreground:

2652

3192

if pidfile is not None:

3193

pid = os.getpid()

2653

3194

try:

2654

3195

with pidfile:

2655

pid = os.getpid()

2656

pidfile.write(str(pid) + "\n".encode("utf-8"))

3196

print(pid, file=pidfile)

2657

3197

except IOError:

2658

3198

logger.error("Could not write to file %r with PID %d",

2659

3199

pidfilename, pid)

2660

3200

del pidfile

2661

3201

del pidfilename

2662

3202

2663

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

2664

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

3203

for termsig in (signal.SIGHUP, signal.SIGTERM):

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2665

3206

2666

3207

if use_dbus:

2667

@alternate_dbus_interfaces({"se.recompile.Mandos":

2668

"se.bsnet.fukt.Mandos"})

2669

class MandosDBusService(DBusObjectWithProperties):

3208

3209

@alternate_dbus_interfaces(

3210

{ "se.recompile.Mandos": "se.bsnet.fukt.Mandos" })

3211

class MandosDBusService(DBusObjectWithObjectManager):

2670

3212

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

3213

2671

3214

def __init__(self):

2672

3215

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

3216

2673

3217

_interface = "se.recompile.Mandos"

2674

3218

2675

@dbus_interface_annotations(_interface)

2676

def _foo(self):

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2680

2681

3219

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

2682

3220

def ClientAdded(self, objpath):

2683

3221

"D-Bus signal"

2688

3226

"D-Bus signal"

2689

3227

pass

2690

3228

3229

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

3230

"true"})

2691

3231

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

2692

3232

def ClientRemoved(self, objpath, name):

2693

3233

"D-Bus signal"

2694

3234

pass

2695

3235

3236

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

3237

"true"})

2696

3238

@dbus.service.method(_interface, out_signature="ao")

2697

3239

def GetAllClients(self):

2698

3240

"D-Bus method"

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2701

tcp_server.clients.itervalues())

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2702

3243

3244

@dbus_annotations({"org.freedesktop.DBus.Deprecated":

3245

"true"})

2703

3246

@dbus.service.method(_interface,

2704

3247

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

2705

3248

def GetAllClientsWithProperties(self):

2706

3249

"D-Bus method"

2707

3250

return dbus.Dictionary(

2708

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

2709

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

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

for c in tcp_server.clients.values() },

2710

3254

signature="oa{sv}")

2711

3255

2712

3256

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

2713

3257

def RemoveClient(self, object_path):

2714

3258

"D-Bus method"

2715

for c in tcp_server.clients.itervalues():

3259

for c in tcp_server.clients.values():

2716

3260

if c.dbus_object_path == object_path:

2717

3261

del tcp_server.clients[c.name]

2718

3262

c.remove_from_connection()

2719

# Don't signal anything except ClientRemoved

3263

# Don't signal the disabling

2720

3264

c.disable(quiet=True)

2721

# Emit D-Bus signal

2722

self.ClientRemoved(object_path, c.name)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2723

3267

return

2724

3268

raise KeyError(object_path)

2725

3269

2726

3270

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

for client in tcp_server.clients.values()})

3283

3284

def client_added_signal(self, client):

3285

"""Send the new standard signal and the old signal"""

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

"""Send the new standard signal and the old signal"""

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

2727

3307

2728

3308

mandos_dbus_service = MandosDBusService()

2729

3309

2730

3310

def cleanup():

2731

3311

"Cleanup function; run on exit"

2732

service.cleanup()

3312

if zeroconf:

3313

service.cleanup()

2733

3314

2734

3315

multiprocessing.active_children()

2735

3316

wnull.close()

2741

3322

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

2742

3323

clients = {}

2743

3324

with PGPEngine() as pgp:

2744

for client in tcp_server.clients.itervalues():

3325

for client in tcp_server.clients.values():

2745

3326

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

2746

3327

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

2747

3328

key)

2749

3330

2750

3331

# A list of attributes that can not be pickled

2751

3332

# + secret.

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

3333

exclude = { "bus", "changedstate", "secret",

3334

"checker", "server_settings" }

3335

for name, typ in inspect.getmembers(dbus.service

3336

.Object):

2756

3337

exclude.add(name)

2757

3338

2758

3339

client_dict["encrypted_secret"] = (client

2765

3346

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

2766

3347

2767

3348

try:

2768

with (tempfile.NamedTemporaryFile

2769

(mode='wb', suffix=".pickle", prefix='clients-',

2770

dir=os.path.dirname(stored_state_path),

2771

delete=False)) as stored_state:

2772

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

2773

tempname=stored_state.name

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

2774

3358

os.rename(tempname, stored_state_path)

2775

3359

except (IOError, OSError) as e:

2776

3360

if not debug:

2779

3363

except NameError:

2780

3364

pass

2781

3365

if e.errno in (errno.ENOENT, errno.EACCES, errno.EEXIST):

2782

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

3366

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

2783

3367

.format(os.strerror(e.errno)))

2784

3368

else:

2785

3369

logger.warning("Could not save persistent state:",

2786

3370

exc_info=e)

2787

raise e

3371

raise

2788

3372

2789

3373

# Delete all clients, and settings from config

2790

3374

while tcp_server.clients:

2791

3375

name, client = tcp_server.clients.popitem()

2792

3376

if use_dbus:

2793

3377

client.remove_from_connection()

2794

# Don't signal anything except ClientRemoved

3378

# Don't signal the disabling

2795

3379

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

2796

3381

if use_dbus:

2797

# Emit D-Bus signal

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

3382

mandos_dbus_service.client_removed_signal(client)

2801

3383

client_settings.clear()

2802

3384

2803

3385

atexit.register(cleanup)

2804

3386

2805

for client in tcp_server.clients.itervalues():

3387

for client in tcp_server.clients.values():

2806

3388

if use_dbus:

2807

# Emit D-Bus signal

2808

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2809

3391

# Need to initiate checking of clients

2810

3392

if client.enabled:

2811

3393

client.init_checker()

2814

3396

tcp_server.server_activate()

2815

3397

2816

3398

# Find out what port we got

2817

service.port = tcp_server.socket.getsockname()[1]

3399

if zeroconf:

3400

service.port = tcp_server.socket.getsockname()[1]

2818

3401

if use_ipv6:

2819

3402

logger.info("Now listening on address %r, port %d,"

2820

3403

" flowinfo %d, scope_id %d",

2826

3409

#service.interface = tcp_server.socket.getsockname()[3]

2827

3410

2828

3411

try:

2829

# From the Avahi example code

2830

try:

2831

service.activate()

2832

except dbus.exceptions.DBusException as error:

2833

logger.critical("D-Bus Exception", exc_info=error)

2834

cleanup()

2835

sys.exit(1)

2836

# End of Avahi example code

3412

if zeroconf:

3413

# From the Avahi example code

3414

try:

3415

service.activate()

3416

except dbus.exceptions.DBusException as error:

3417

logger.critical("D-Bus Exception", exc_info=error)

3418

cleanup()

3419

sys.exit(1)

3420

# End of Avahi example code

2837

3421

2838

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2839

lambda *args, **kwargs:

2840

(tcp_server.handle_request

2841

(*args[2:], **kwargs) or True))

3422

GLib.io_add_watch(tcp_server.fileno(), GLib.IO_IN,

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

(*args[2:], **kwargs) or True))

2842

3426

2843

3427

logger.debug("Starting main loop")

2844

3428

main_loop.run()

2854

3438

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

2855

3439

cleanup()

2856

3440

3441

2857

3442

if __name__ == '__main__':

2858

3443

main()