/mandos/release : revision 237.25.5

1

#!/usr/bin/python

1

#!/usr/bin/python2.7

2

# -*- mode: python; coding: utf-8 -*-

3

#

4

# Mandos server - give out binary blobs to connecting clients.

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

try:

38

from future_builtins import *

39

except ImportError:

40

pass

37

from future_builtins import *

41

38

42

try:

43

import SocketServer as socketserver

44

except ImportError:

45

import socketserver

39

import SocketServer as socketserver

46

40

import socket

47

41

import argparse

48

42

import datetime

49

43

import errno

50

try:

51

import ConfigParser as configparser

52

except ImportError:

53

import configparser

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

54

51

import sys

55

52

import re

56

53

import os

65

62

import struct

66

63

import fcntl

67

64

import functools

68

try:

69

import cPickle as pickle

70

except ImportError:

71

import pickle

65

import cPickle as pickle

72

66

import multiprocessing

73

67

import types

74

68

import binascii

75

69

import tempfile

76

70

import itertools

77

71

import collections

78

import codecs

79

72

80

73

import dbus

81

74

import dbus.service

82

from gi.repository import GLib

75

import gobject

76

import avahi

83

77

from dbus.mainloop.glib import DBusGMainLoop

84

78

import ctypes

85

79

import ctypes.util

97

91

if sys.version_info.major == 2:

98

92

str = unicode

99

93

100

version = "1.7.6"

94

version = "1.6.9"

101

95

stored_state_file = "clients.pickle"

102

96

103

97

logger = logging.getLogger()

104

98

syslogger = None

105

99

106

100

try:

107

if_nametoindex = ctypes.cdll.LoadLibrary(

108

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

101

if_nametoindex = (ctypes.cdll.LoadLibrary

102

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

103

.if_nametoindex)

109

104

except (OSError, AttributeError):

110

111

105

def if_nametoindex(interface):

112

106

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

113

107

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

118

112

return interface_index

119

113

120

114

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

137

115

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

138

116

"""init logger and add loglevel"""

139

117

140

118

global syslogger

141

syslogger = (logging.handlers.SysLogHandler(

142

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

143

address = "/dev/log"))

119

syslogger = (logging.handlers.SysLogHandler

120

(facility =

121

logging.handlers.SysLogHandler.LOG_DAEMON,

122

address = "/dev/log"))

144

123

syslogger.setFormatter(logging.Formatter

145

124

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

146

125

' %(message)s'))

163

142

164

143

class PGPEngine(object):

165

144

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

166

167

145

def __init__(self):

168

146

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

180

147

self.gnupgargs = ['--batch',

181

'--homedir', self.tempdir,

148

'--home', self.tempdir,

182

149

'--force-mdc',

183

150

'--quiet',

184

151

'--no-use-agent']

219

186

220

187

def encrypt(self, data, password):

221

188

passphrase = self.password_encode(password)

222

with tempfile.NamedTemporaryFile(

223

dir=self.tempdir) as passfile:

189

with tempfile.NamedTemporaryFile(dir=self.tempdir

190

) as passfile:

224

191

passfile.write(passphrase)

225

192

passfile.flush()

226

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

193

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

227

194

'--passphrase-file',

228

195

passfile.name]

229

196

+ self.gnupgargs,

237

204

238

205

def decrypt(self, data, password):

239

206

passphrase = self.password_encode(password)

240

with tempfile.NamedTemporaryFile(

241

dir = self.tempdir) as passfile:

207

with tempfile.NamedTemporaryFile(dir = self.tempdir

208

) as passfile:

242

209

passfile.write(passphrase)

243

210

passfile.flush()

244

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

211

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

245

212

'--passphrase-file',

246

213

passfile.name]

247

214

+ self.gnupgargs,

248

215

stdin = subprocess.PIPE,

249

216

stdout = subprocess.PIPE,

250

217

stderr = subprocess.PIPE)

251

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

218

decrypted_plaintext, err = proc.communicate(input

219

= data)

252

220

if proc.returncode != 0:

253

221

raise PGPError(err)

254

222

return decrypted_plaintext

255

223

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()

280

224

281

225

class AvahiError(Exception):

282

226

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

284

228

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

285

229

**kwargs)

286

230

287

288

231

class AvahiServiceError(AvahiError):

289

232

pass

290

233

291

292

234

class AvahiGroupError(AvahiError):

293

235

pass

294

236

314

256

bus: dbus.SystemBus()

315

257

"""

316

258

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):

259

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

260

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

261

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

262

protocol = avahi.PROTO_UNSPEC, bus = None):

328

263

self.interface = interface

329

264

self.name = name

330

265

self.type = servicetype

347

282

" after %i retries, exiting.",

348

283

self.rename_count)

349

284

raise AvahiServiceError("Too many renames")

350

self.name = str(

351

self.server.GetAlternativeServiceName(self.name))

285

self.name = str(self.server

286

.GetAlternativeServiceName(self.name))

352

287

self.rename_count += 1

353

288

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

354

289

self.name)

409

344

elif state == avahi.ENTRY_GROUP_FAILURE:

410

345

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

411

346

str(error))

412

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

347

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

348

.format(error))

413

349

414

350

def cleanup(self):

415

351

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

425

361

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

426

362

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

427

363

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

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

}

364

bad_states = { avahi.SERVER_INVALID:

365

"Zeroconf server invalid",

366

avahi.SERVER_REGISTERING: None,

367

avahi.SERVER_COLLISION:

368

"Zeroconf server name collision",

369

avahi.SERVER_FAILURE:

370

"Zeroconf server failure" }

434

371

if state in bad_states:

435

372

if bad_states[state] is not None:

436

373

if error is None:

439

376

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

440

377

self.cleanup()

441

378

elif state == avahi.SERVER_RUNNING:

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)

379

self.add()

454

380

else:

455

381

if error is None:

456

382

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

466

392

follow_name_owner_changes=True),

467

393

avahi.DBUS_INTERFACE_SERVER)

468

394

self.server.connect_to_signal("StateChanged",

469

self.server_state_changed)

395

self.server_state_changed)

470

396

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

471

397

472

398

474

400

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

475

401

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

476

402

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

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

403

syslogger.setFormatter(logging.Formatter

404

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

405

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

406

.format(self.name)))

480

407

return ret

481

408

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()

746

409

747

410

class Client(object):

748

411

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

754

417

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

755

418

to see if the client lives.

756

419

'None' if no process is running.

757

checker_callback_tag: a GLib event source tag, or None

420

checker_callback_tag: a gobject event source tag, or None

758

421

checker_command: string; External command which is run to check

759

422

if client lives. %() expansions are done at

760

423

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

761

424

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

762

checker_initiator_tag: a GLib event source tag, or None

425

checker_initiator_tag: a gobject event source tag, or None

763

426

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

764

427

client_structure: Object describing what attributes a client has

765

428

and is used for storing the client at exit

766

429

current_checker_command: string; current running checker_command

767

disable_initiator_tag: a GLib event source tag, or None

430

disable_initiator_tag: a gobject event source tag, or None

768

431

enabled: bool()

769

432

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

770

433

uniquely identify the client

775

438

last_checker_status: integer between 0 and 255 reflecting exit

776

439

status of last checker. -1 reflects crashed

777

440

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

780

441

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

781

442

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

782

443

D-Bus identifiers

795

456

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

796

457

"last_approval_request", "last_checked_ok",

797

458

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

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

}

459

client_defaults = { "timeout": "PT5M",

460

"extended_timeout": "PT15M",

461

"interval": "PT2M",

462

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

463

"host": "",

464

"approval_delay": "PT0S",

465

"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

809

469

810

470

@staticmethod

811

471

def config_parser(config):

827

487

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

828

488

"enabled")

829

489

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

833

490

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

834

491

.replace(" ", ""))

835

492

if "secret" in section:

836

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

837

.encode("utf-8"),

838

"base64")

493

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

839

494

elif "secfile" in section:

840

495

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

841

496

(section["secfile"])),

879

534

self.expires = None

880

535

881

536

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

537

# Uppercase and remove spaces from fingerprint for later

538

# comparison purposes with return value from the fingerprint()

539

# function

882

540

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

883

541

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

884

542

datetime.datetime.utcnow())

891

549

self.current_checker_command = None

892

550

self.approved = None

893

551

self.approvals_pending = 0

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

552

self.changedstate = (multiprocessing_manager

553

.Condition(multiprocessing_manager

554

.Lock()))

555

self.client_structure = [attr for attr in

556

self.__dict__.iterkeys()

898

557

if not attr.startswith("_")]

899

558

self.client_structure.append("client_structure")

900

559

901

for name, t in inspect.getmembers(

902

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

560

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

561

lambda obj:

562

isinstance(obj,

563

property)):

903

564

if not name.startswith("_"):

904

565

self.client_structure.append(name)

905

566

926

587

if not quiet:

927

588

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

928

589

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

929

GLib.source_remove(self.disable_initiator_tag)

590

gobject.source_remove(self.disable_initiator_tag)

930

591

self.disable_initiator_tag = None

931

592

self.expires = None

932

593

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

933

GLib.source_remove(self.checker_initiator_tag)

594

gobject.source_remove(self.checker_initiator_tag)

934

595

self.checker_initiator_tag = None

935

596

self.stop_checker()

936

597

self.enabled = False

937

598

if not quiet:

938

599

self.send_changedstate()

939

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

600

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

940

601

return False

941

602

942

603

def __del__(self):

946

607

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

947

608

# and every interval from then on.

948

609

if self.checker_initiator_tag is not None:

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)

610

gobject.source_remove(self.checker_initiator_tag)

611

self.checker_initiator_tag = (gobject.timeout_add

612

(int(self.interval

613

.total_seconds() * 1000),

614

self.start_checker))

953

615

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

954

616

if self.disable_initiator_tag is not None:

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)

617

gobject.source_remove(self.disable_initiator_tag)

618

self.disable_initiator_tag = (gobject.timeout_add

619

(int(self.timeout

620

.total_seconds() * 1000),

621

self.disable))

958

622

# Also start a new checker *right now*.

959

623

self.start_checker()

960

624

961

def checker_callback(self, source, condition, connection,

962

command):

625

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

963

626

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

964

627

self.checker_callback_tag = None

965

628

self.checker = None

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

629

if os.WIFEXITED(condition):

630

self.last_checker_status = os.WEXITSTATUS(condition)

973

631

if self.last_checker_status == 0:

974

632

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

975

633

vars(self))

976

634

self.checked_ok()

977

635

else:

978

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

636

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

637

vars(self))

979

638

else:

980

639

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

982

640

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

983

641

vars(self))

984

return False

985

642

986

643

def checked_ok(self):

987

644

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

988

645

self.last_checked_ok = datetime.datetime.utcnow()

989

646

self.last_checker_status = 0

990

self.last_checker_signal = None

991

647

self.bump_timeout()

992

648

993

649

def bump_timeout(self, timeout=None):

995

651

if timeout is None:

996

652

timeout = self.timeout

997

653

if self.disable_initiator_tag is not None:

998

GLib.source_remove(self.disable_initiator_tag)

654

gobject.source_remove(self.disable_initiator_tag)

999

655

self.disable_initiator_tag = None

1000

656

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

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

657

self.disable_initiator_tag = (gobject.timeout_add

658

(int(timeout.total_seconds()

659

* 1000), self.disable))

1003

660

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

1004

661

1005

662

def need_approval(self):

1019

676

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

1020

677

# should be.

1021

678

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

679

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

680

try:

681

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

682

except AttributeError:

683

pass

684

except OSError as error:

685

if error.errno != errno.ECHILD:

686

raise

687

else:

688

if pid:

689

logger.warning("Checker was a zombie")

690

gobject.source_remove(self.checker_callback_tag)

691

self.checker_callback(pid, status,

692

self.current_checker_command)

1026

693

# Start a new checker if needed

1027

694

if self.checker is None:

1028

695

# Escape attributes for the shell

1029

escaped_attrs = {

1030

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

1031

for attr in self.runtime_expansions }

696

escaped_attrs = { attr:

697

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

698

for attr in self.runtime_expansions }

1032

699

try:

1033

700

command = self.checker_command % escaped_attrs

1034

701

except TypeError as error:

1035

702

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

1036

self.checker_command,

703

self.checker_command, exc_info=error)

704

return True # Try again later

705

self.current_checker_command = command

706

try:

707

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

708

command, self.name)

709

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

710

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

711

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

712

# always replaced by /dev/null.)

713

# The exception is when not debugging but nevertheless

714

# running in the foreground; use the previously

715

# created wnull.

716

popen_args = {}

717

if (not self.server_settings["debug"]

718

and self.server_settings["foreground"]):

719

popen_args.update({"stdout": wnull,

720

"stderr": wnull })

721

self.checker = subprocess.Popen(command,

722

close_fds=True,

723

shell=True, cwd="/",

724

**popen_args)

725

except OSError as error:

726

logger.error("Failed to start subprocess",

1037

727

exc_info=error)

1038

return True # Try again later

1039

self.current_checker_command = command

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

728

return True

729

self.checker_callback_tag = (gobject.child_watch_add

730

(self.checker.pid,

731

self.checker_callback,

732

data=command))

733

# The checker may have completed before the gobject

734

# watch was added. Check for this.

735

try:

736

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

737

except OSError as error:

738

if error.errno == errno.ECHILD:

739

# This should never happen

740

logger.error("Child process vanished",

741

exc_info=error)

742

return True

743

raise

744

if pid:

745

gobject.source_remove(self.checker_callback_tag)

746

self.checker_callback(pid, status, command)

747

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

1066

748

return True

1067

749

1068

750

def stop_checker(self):

1069

751

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

1070

752

if self.checker_callback_tag:

1071

GLib.source_remove(self.checker_callback_tag)

753

gobject.source_remove(self.checker_callback_tag)

1072

754

self.checker_callback_tag = None

1073

755

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

1074

756

return

1075

757

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

1076

self.checker.terminate()

758

try:

759

self.checker.terminate()

760

#time.sleep(0.5)

761

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

762

# self.checker.kill()

763

except OSError as error:

764

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

765

raise

1077

766

self.checker = None

1078

767

1079

768

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

769

def dbus_service_property(dbus_interface, signature="v",

770

access="readwrite", byte_arrays=False):

1084

771

"""Decorators for marking methods of a DBusObjectWithProperties to

1085

772

become properties on the D-Bus.

1086

773

1096

783

if byte_arrays and signature != "ay":

1097

784

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

1098

785

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

1099

1100

786

def decorator(func):

1101

787

func._dbus_is_property = True

1102

788

func._dbus_interface = dbus_interface

1107

793

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

1108

794

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1109

795

return func

1110

1111

796

return decorator

1112

797

1113

798

1122

807

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

1123

808

"false"}

1124

809

"""

1125

1126

810

def decorator(func):

1127

811

func._dbus_is_interface = True

1128

812

func._dbus_interface = dbus_interface

1129

813

func._dbus_name = dbus_interface

1130

814

return func

1131

1132

815

return decorator

1133

816

1134

817

1143

826

access="r")

1144

827

def Property_dbus_property(self):

1145

828

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

1148

829

"""

1149

1150

830

def decorator(func):

1151

831

func._dbus_annotations = annotations

1152

832

return func

1153

1154

833

return decorator

1155

834

1156

835

1159

838

"""

1160

839

pass

1161

840

1162

1163

841

class DBusPropertyAccessException(DBusPropertyException):

1164

842

"""A property's access permissions disallows an operation.

1165

843

"""

1172

850

pass

1173

851

1174

852

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

853

class DBusObjectWithProperties(dbus.service.Object):

854

"""A D-Bus object with properties.

1177

855

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

856

Classes inheriting from this can use the dbus_service_property

857

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

858

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

1180

859

"""

1181

860

1182

861

@staticmethod

1192

871

def _get_all_dbus_things(self, thing):

1193

872

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

1194

873

"""

1195

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

874

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

875

name),

1196

876

athing.__get__(self))

1197

877

for cls in self.__class__.__mro__

1198

878

for name, athing in

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

"""

879

inspect.getmembers(cls,

880

self._is_dbus_thing(thing)))

1271

881

1272

882

def _get_dbus_property(self, interface_name, property_name):

1273

883

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

1274

884

property with the specified name and interface.

1275

885

"""

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

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

886

for cls in self.__class__.__mro__:

887

for name, value in (inspect.getmembers

888

(cls,

889

self._is_dbus_thing("property"))):

1279

890

if (value._dbus_name == property_name

1280

891

and value._dbus_interface == interface_name):

1281

892

return value.__get__(self)

1282

893

1283

894

# No such property

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",

895

raise DBusPropertyNotFound(self.dbus_object_path + ":"

896

+ interface_name + "."

897

+ property_name)

898

899

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

1298

900

out_signature="v")

1299

901

def Get(self, interface_name, property_name):

1300

902

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

1325

927

for byte in value))

1326

928

prop(value)

1327

929

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

930

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

1330

931

out_signature="a{sv}")

1331

932

def GetAll(self, interface_name):

1332

933

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

1347

948

if not hasattr(value, "variant_level"):

1348

949

properties[name] = value

1349

950

continue

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

951

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

952

value.variant_level+1)

1352

953

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

1353

954

1354

955

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

1368

969

1369

970

Inserts property tags and interface annotation tags.

1370

971

"""

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

972

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

973

connection)

1374

974

try:

1375

975

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

1376

1377

976

def make_tag(document, name, prop):

1378

977

e = document.createElement("property")

1379

978

e.setAttribute("name", name)

1380

979

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

1381

980

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

1382

981

return e

1383

1384

982

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

1385

983

# Add property tags

1386

984

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

1389

987

if prop._dbus_interface

1390

988

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

1391

989

if_tag.appendChild(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)

990

# Add annotation tags

991

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

992

for tag in if_tag.getElementsByTagName(typ):

993

annots = dict()

994

for name, prop in (self.

995

_get_all_dbus_things(typ)):

996

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

997

and prop._dbus_interface

998

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

999

annots.update(getattr

1000

(prop,

1001

"_dbus_annotations",

1002

{}))

1003

for name, value in annots.items():

1004

ann_tag = document.createElement(

1005

"annotation")

1006

ann_tag.setAttribute("name", name)

1007

ann_tag.setAttribute("value", value)

1008

tag.appendChild(ann_tag)

1009

# Add interface annotation tags

1010

for annotation, value in dict(

1011

itertools.chain.from_iterable(

1012

annotations().items()

1013

for name, annotations in

1014

self._get_all_dbus_things("interface")

1015

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

1016

)).items():

1017

ann_tag = document.createElement("annotation")

1018

ann_tag.setAttribute("name", annotation)

1019

ann_tag.setAttribute("value", value)

1020

if_tag.appendChild(ann_tag)

1408

1021

# Add the names to the return values for the

1409

1022

# "org.freedesktop.DBus.Properties" methods

1410

1023

if (if_tag.getAttribute("name")

1428

1041

exc_info=error)

1429

1042

return xmlstring

1430

1043

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

1499

1044

1500

1045

def datetime_to_dbus(dt, variant_level=0):

1501

1046

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

1502

1047

if dt is None:

1503

1048

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

1504

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

1049

return dbus.String(dt.isoformat(),

1050

variant_level=variant_level)

1505

1051

1506

1052

1507

1053

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1527

1073

(from DBusObjectWithProperties) and interfaces (from the

1528

1074

dbus_interface_annotations decorator).

1529

1075

"""

1530

1531

1076

def wrapper(cls):

1532

1077

for orig_interface_name, alt_interface_name in (

1533

alt_interface_names.items()):

1078

alt_interface_names.items()):

1534

1079

attr = {}

1535

1080

interface_names = set()

1536

1081

# Go though all attributes of the class

1538

1083

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

1539

1084

# with the wrong interface name

1540

1085

if (not hasattr(attribute, "_dbus_interface")

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

1086

or not attribute._dbus_interface

1087

.startswith(orig_interface_name)):

1543

1088

continue

1544

1089

# Create an alternate D-Bus interface name based on

1545

1090

# the current name

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1091

alt_interface = (attribute._dbus_interface

1092

.replace(orig_interface_name,

1093

alt_interface_name))

1548

1094

interface_names.add(alt_interface)

1549

1095

# Is this a D-Bus signal?

1550

1096

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

1551

1097

# Extract the original non-method undecorated

1552

1098

# function by black magic

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

1099

nonmethod_func = (dict(

1555

1100

zip(attribute.func_code.co_freevars,

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)

1101

attribute.__closure__))["func"]

1102

.cell_contents)

1563

1103

# Create a new, but exactly alike, function

1564

1104

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

1565

1105

# with the alternate D-Bus interface name

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1106

new_function = (dbus.service.signal

1107

(alt_interface,

1108

attribute._dbus_signature)

1109

(types.FunctionType(

1110

nonmethod_func.func_code,

1111

nonmethod_func.func_globals,

1112

nonmethod_func.func_name,

1113

nonmethod_func.func_defaults,

1114

nonmethod_func.func_closure)))

1570

1115

# Copy annotations, if any

1571

1116

try:

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1117

new_function._dbus_annotations = (

1118

dict(attribute._dbus_annotations))

1574

1119

except AttributeError:

1575

1120

pass

1576

1121

# Define a creator of a function to call both the

1581

1126

"""This function is a scope container to pass

1582

1127

func1 and func2 to the "call_both" function

1583

1128

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1586

1129

def call_both(*args, **kwargs):

1587

1130

"""This function will emit two D-Bus

1588

1131

signals by calling func1 and func2"""

1589

1132

func1(*args, **kwargs)

1590

1133

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

1596

1134

return call_both

1597

1135

# Create the "call_both" function and add it to

1598

1136

# the class

1603

1141

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

1604

1142

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

1605

1143

# to the class.

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1144

attr[attrname] = (dbus.service.method

1145

(alt_interface,

1146

attribute._dbus_in_signature,

1147

attribute._dbus_out_signature)

1148

(types.FunctionType

1149

(attribute.func_code,

1150

attribute.func_globals,

1151

attribute.func_name,

1152

attribute.func_defaults,

1153

attribute.func_closure)))

1612

1154

# Copy annotations, if any

1613

1155

try:

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1156

attr[attrname]._dbus_annotations = (

1157

dict(attribute._dbus_annotations))

1616

1158

except AttributeError:

1617

1159

pass

1618

1160

# Is this a D-Bus property?

1621

1163

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

1622

1164

# property with the alternate D-Bus interface

1623

1165

# name. Add it to the class.

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)))

1166

attr[attrname] = (dbus_service_property

1167

(alt_interface,

1168

attribute._dbus_signature,

1169

attribute._dbus_access,

1170

attribute

1171

._dbus_get_args_options

1172

["byte_arrays"])

1173

(types.FunctionType

1174

(attribute.func_code,

1175

attribute.func_globals,

1176

attribute.func_name,

1177

attribute.func_defaults,

1178

attribute.func_closure)))

1630

1179

# Copy annotations, if any

1631

1180

try:

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1181

attr[attrname]._dbus_annotations = (

1182

dict(attribute._dbus_annotations))

1634

1183

except AttributeError:

1635

1184

pass

1636

1185

# Is this a D-Bus interface?

1639

1188

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

1640

1189

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

1641

1190

# to the class.

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1191

attr[attrname] = (dbus_interface_annotations

1192

(alt_interface)

1193

(types.FunctionType

1194

(attribute.func_code,

1195

attribute.func_globals,

1196

attribute.func_name,

1197

attribute.func_defaults,

1198

attribute.func_closure)))

1645

1199

if deprecate:

1646

1200

# Deprecate all alternate interfaces

1647

1201

iname="_AlternateDBusNames_interface_annotation{}"

1648

1202

for interface_name in interface_names:

1649

1650

1203

@dbus_interface_annotations(interface_name)

1651

1204

def func(self):

1652

1205

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

1653

"true" }

1206

"true" }

1654

1207

# Find an unused name

1655

1208

for aname in (iname.format(i)

1656

1209

for i in itertools.count()):

1660

1213

if interface_names:

1661

1214

# Replace the class with a new subclass of it with

1662

1215

# methods, signals, etc. as created above.

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)

1216

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

1217

(cls,), attr)

1669

1218

return cls

1670

1671

1219

return wrapper

1672

1220

1673

1221

1674

1222

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

1675

"se.bsnet.fukt.Mandos"})

1223

"se.bsnet.fukt.Mandos"})

1676

1224

class ClientDBus(Client, DBusObjectWithProperties):

1677

1225

"""A Client class using D-Bus

1678

1226

1682

1230

"""

1683

1231

1684

1232

runtime_expansions = (Client.runtime_expansions

1685

+ ("dbus_object_path", ))

1233

+ ("dbus_object_path",))

1686

1234

1687

1235

_interface = "se.recompile.Mandos.Client"

1688

1236

1696

1244

client_object_name = str(self.name).translate(

1697

1245

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

1698

1246

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

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1247

self.dbus_object_path = (dbus.ObjectPath

1248

("/clients/" + client_object_name))

1701

1249

DBusObjectWithProperties.__init__(self, self.bus,

1702

1250

self.dbus_object_path)

1703

1251

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1252

def notifychangeproperty(transform_func,

1253

dbus_name, type_func=lambda x: x,

1254

variant_level=1, invalidate_only=False,

1708

1255

_interface=_interface):

1709

1256

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

1710

1257

its changes to DBus.

1717

1264

variant_level: D-Bus variant level. Default: 1

1718

1265

"""

1719

1266

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

1720

1721

1267

def setter(self, value):

1722

1268

if hasattr(self, "dbus_object_path"):

1723

1269

if (not hasattr(self, attrname) or

1724

1270

type_func(getattr(self, attrname, None))

1725

1271

!= type_func(value)):

1726

1272

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1273

self.PropertiesChanged(_interface,

1274

dbus.Dictionary(),

1275

dbus.Array

1276

((dbus_name,)))

1730

1277

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1734

1281

self.PropertyChanged(dbus.String(dbus_name),

1735

1282

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

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

1739

dbus_value }),

1740

dbus.Array())

1283

self.PropertiesChanged(_interface,

1284

dbus.Dictionary({

1285

dbus.String(dbus_name):

1286

dbus_value }), dbus.Array())

1741

1287

setattr(self, attrname, value)

1742

1288

1743

1289

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

1749

1295

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

1750

1296

last_enabled = notifychangeproperty(datetime_to_dbus,

1751

1297

"LastEnabled")

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1298

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

1299

type_func = lambda checker:

1300

checker is not None)

1755

1301

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1756

1302

"LastCheckedOK")

1757

1303

last_checker_status = notifychangeproperty(dbus.Int16,

1760

1306

datetime_to_dbus, "LastApprovalRequest")

1761

1307

approved_by_default = notifychangeproperty(dbus.Boolean,

1762

1308

"ApprovedByDefault")

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

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

1309

approval_delay = notifychangeproperty(dbus.UInt64,

1310

"ApprovalDelay",

1311

type_func =

1312

lambda td: td.total_seconds()

1313

* 1000)

1766

1314

approval_duration = notifychangeproperty(

1767

1315

dbus.UInt64, "ApprovalDuration",

1768

1316

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

1769

1317

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

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

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

1318

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

1319

type_func = lambda td:

1320

td.total_seconds() * 1000)

1773

1321

extended_timeout = notifychangeproperty(

1774

1322

dbus.UInt64, "ExtendedTimeout",

1775

1323

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

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

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

1324

interval = notifychangeproperty(dbus.UInt64,

1325

"Interval",

1326

type_func =

1327

lambda td: td.total_seconds()

1328

* 1000)

1779

1329

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

1780

1330

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

1781

1331

invalidate_only=True)

1791

1341

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

1792

1342

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

1793

1343

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:

1344

def checker_callback(self, pid, condition, command,

1345

*args, **kwargs):

1346

self.checker_callback_tag = None

1347

self.checker = None

1348

if os.WIFEXITED(condition):

1349

exitstatus = os.WEXITSTATUS(condition)

1801

1350

# Emit D-Bus signal

1802

1351

self.CheckerCompleted(dbus.Int16(exitstatus),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1352

dbus.Int64(condition),

1805

1353

dbus.String(command))

1806

1354

else:

1807

1355

# Emit D-Bus signal

1808

1356

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

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1357

dbus.Int64(condition),

1813

1358

dbus.String(command))

1814

return ret

1359

1360

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

1361

*args, **kwargs)

1815

1362

1816

1363

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

1817

1364

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

1829

1376

1830

1377

def approve(self, value=True):

1831

1378

self.approved = value

1832

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

1833

* 1000), self._reset_approved)

1379

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

1380

* 1000), self._reset_approved)

1834

1381

self.send_changedstate()

1835

1382

1836

1383

## D-Bus methods, signals & properties

1892

1439

self.checked_ok()

1893

1440

1894

1441

# Enable - method

1895

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

1896

1442

@dbus.service.method(_interface)

1897

1443

def Enable(self):

1898

1444

"D-Bus method"

1899

1445

self.enable()

1900

1446

1901

1447

# StartChecker - method

1902

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

1903

1448

@dbus.service.method(_interface)

1904

1449

def StartChecker(self):

1905

1450

"D-Bus method"

1906

1451

self.start_checker()

1907

1452

1908

1453

# Disable - method

1909

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

1910

1454

@dbus.service.method(_interface)

1911

1455

def Disable(self):

1912

1456

"D-Bus method"

1913

1457

self.disable()

1914

1458

1915

1459

# StopChecker - method

1916

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

1917

1460

@dbus.service.method(_interface)

1918

1461

def StopChecker(self):

1919

1462

self.stop_checker()

1926

1469

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

1927

1470

1928

1471

# ApprovedByDefault - property

1929

@dbus_service_property(_interface,

1930

signature="b",

1472

@dbus_service_property(_interface, signature="b",

1931

1473

access="readwrite")

1932

1474

def ApprovedByDefault_dbus_property(self, value=None):

1933

1475

if value is None: # get

1935

1477

self.approved_by_default = bool(value)

1936

1478

1937

1479

# ApprovalDelay - property

1938

@dbus_service_property(_interface,

1939

signature="t",

1480

@dbus_service_property(_interface, signature="t",

1940

1481

access="readwrite")

1941

1482

def ApprovalDelay_dbus_property(self, value=None):

1942

1483

if value is None: # get

1945

1486

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

1946

1487

1947

1488

# ApprovalDuration - property

1948

@dbus_service_property(_interface,

1949

signature="t",

1489

@dbus_service_property(_interface, signature="t",

1950

1490

access="readwrite")

1951

1491

def ApprovalDuration_dbus_property(self, value=None):

1952

1492

if value is None: # get

1955

1495

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

1956

1496

1957

1497

# Name - property

1958

@dbus_annotations(

1959

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

1960

1498

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

1961

1499

def Name_dbus_property(self):

1962

1500

return dbus.String(self.name)

1963

1501

1964

1502

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1967

1503

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

1968

1504

def Fingerprint_dbus_property(self):

1969

1505

return dbus.String(self.fingerprint)

1970

1506

1971

1507

# Host - property

1972

@dbus_service_property(_interface,

1973

signature="s",

1508

@dbus_service_property(_interface, signature="s",

1974

1509

access="readwrite")

1975

1510

def Host_dbus_property(self, value=None):

1976

1511

if value is None: # get

1978

1513

self.host = str(value)

1979

1514

1980

1515

# Created - property

1981

@dbus_annotations(

1982

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

1983

1516

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

1984

1517

def Created_dbus_property(self):

1985

1518

return datetime_to_dbus(self.created)

1990

1523

return datetime_to_dbus(self.last_enabled)

1991

1524

1992

1525

# Enabled - property

1993

@dbus_service_property(_interface,

1994

signature="b",

1526

@dbus_service_property(_interface, signature="b",

1995

1527

access="readwrite")

1996

1528

def Enabled_dbus_property(self, value=None):

1997

1529

if value is None: # get

2002

1534

self.disable()

2003

1535

2004

1536

# LastCheckedOK - property

2005

@dbus_service_property(_interface,

2006

signature="s",

1537

@dbus_service_property(_interface, signature="s",

2007

1538

access="readwrite")

2008

1539

def LastCheckedOK_dbus_property(self, value=None):

2009

1540

if value is not None:

2012

1543

return datetime_to_dbus(self.last_checked_ok)

2013

1544

2014

1545

# LastCheckerStatus - property

2015

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

1546

@dbus_service_property(_interface, signature="n",

1547

access="read")

2016

1548

def LastCheckerStatus_dbus_property(self):

2017

1549

return dbus.Int16(self.last_checker_status)

2018

1550

2027

1559

return datetime_to_dbus(self.last_approval_request)

2028

1560

2029

1561

# Timeout - property

2030

@dbus_service_property(_interface,

2031

signature="t",

1562

@dbus_service_property(_interface, signature="t",

2032

1563

access="readwrite")

2033

1564

def Timeout_dbus_property(self, value=None):

2034

1565

if value is None: # get

2046

1577

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

2047

1578

is None):

2048

1579

return

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)

1580

gobject.source_remove(self.disable_initiator_tag)

1581

self.disable_initiator_tag = (

1582

gobject.timeout_add(

1583

int((self.expires - now).total_seconds()

1584

* 1000), self.disable))

2053

1585

2054

1586

# ExtendedTimeout - property

2055

@dbus_service_property(_interface,

2056

signature="t",

1587

@dbus_service_property(_interface, signature="t",

2057

1588

access="readwrite")

2058

1589

def ExtendedTimeout_dbus_property(self, value=None):

2059

1590

if value is None: # get

2062

1593

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

2063

1594

2064

1595

# Interval - property

2065

@dbus_service_property(_interface,

2066

signature="t",

1596

@dbus_service_property(_interface, signature="t",

2067

1597

access="readwrite")

2068

1598

def Interval_dbus_property(self, value=None):

2069

1599

if value is None: # get

2073

1603

return

2074

1604

if self.enabled:

2075

1605

# Reschedule checker run

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

1606

gobject.source_remove(self.checker_initiator_tag)

1607

self.checker_initiator_tag = (gobject.timeout_add

1608

(value, self.start_checker))

1609

self.start_checker() # Start one now, too

2080

1610

2081

1611

# Checker - property

2082

@dbus_service_property(_interface,

2083

signature="s",

1612

@dbus_service_property(_interface, signature="s",

2084

1613

access="readwrite")

2085

1614

def Checker_dbus_property(self, value=None):

2086

1615

if value is None: # get

2088

1617

self.checker_command = str(value)

2089

1618

2090

1619

# CheckerRunning - property

2091

@dbus_service_property(_interface,

2092

signature="b",

1620

@dbus_service_property(_interface, signature="b",

2093

1621

access="readwrite")

2094

1622

def CheckerRunning_dbus_property(self, value=None):

2095

1623

if value is None: # get

2100

1628

self.stop_checker()

2101

1629

2102

1630

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

2106

1631

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

2107

1632

def ObjectPath_dbus_property(self):

2108

1633

return self.dbus_object_path # is already a dbus.ObjectPath

2109

1634

2110

1635

# Secret = property

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)

1636

@dbus_service_property(_interface, signature="ay",

1637

access="write", byte_arrays=True)

2118

1638

def Secret_dbus_property(self, value):

2119

1639

self.secret = bytes(value)

2120

1640

2126

1646

self._pipe = child_pipe

2127

1647

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

2128

1648

if not self._pipe.recv():

2129

raise KeyError(fpr)

1649

raise KeyError()

2130

1650

2131

1651

def __getattribute__(self, name):

2132

1652

if name == '_pipe':

2136

1656

if data[0] == 'data':

2137

1657

return data[1]

2138

1658

if data[0] == 'function':

2139

2140

1659

def func(*args, **kwargs):

2141

1660

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

2142

1661

return self._pipe.recv()[1]

2143

2144

1662

return func

2145

1663

2146

1664

def __setattr__(self, name, value):

2162

1680

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

2163

1681

self.server.child_pipe.fileno())

2164

1682

2165

session = gnutls.ClientSession(self.request)

1683

session = (gnutls.connection

1684

.ClientSession(self.request,

1685

gnutls.connection

1686

.X509Credentials()))

1687

1688

# Note: gnutls.connection.X509Credentials is really a

1689

# generic GnuTLS certificate credentials object so long as

1690

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

1691

# here despite using OpenPGP certificates.

2166

1692

2167

1693

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

2168

1694

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

2172

1698

priority = self.server.gnutls_priority

2173

1699

if priority is None:

2174

1700

priority = "NORMAL"

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1701

(gnutls.library.functions

1702

.gnutls_priority_set_direct(session._c_object,

1703

priority, None))

2177

1704

2178

1705

# Start communication using the Mandos protocol

2179

1706

# Get protocol number

2189

1716

# Start GnuTLS connection

2190

1717

try:

2191

1718

session.handshake()

2192

except gnutls.Error as error:

1719

except gnutls.errors.GNUTLSError as error:

2193

1720

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

2194

1721

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

2195

1722

# established. Just abandon the request.

2199

1726

approval_required = False

2200

1727

try:

2201

1728

try:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1729

fpr = self.fingerprint(self.peer_certificate

1730

(session))

1731

except (TypeError,

1732

gnutls.errors.GNUTLSError) as error:

2205

1733

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

2206

1734

return

2207

1735

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

2220

1748

while True:

2221

1749

if not client.enabled:

2222

1750

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

2223

client.name)

1751

client.name)

2224

1752

if self.server.use_dbus:

2225

1753

# Emit D-Bus signal

2226

1754

client.Rejected("Disabled")

2265

1793

else:

2266

1794

delay -= time2 - time

2267

1795

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

1796

sent_size = 0

1797

while sent_size < len(client.secret):

1798

try:

1799

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

1800

except gnutls.errors.GNUTLSError as error:

1801

logger.warning("gnutls send failed",

1802

exc_info=error)

1803

return

1804

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

1805

sent, len(client.secret)

1806

- (sent_size + sent))

1807

sent_size += sent

2274

1808

2275

1809

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

2276

1810

# bump the timeout using extended_timeout

2284

1818

client.approvals_pending -= 1

2285

1819

try:

2286

1820

session.bye()

2287

except gnutls.Error as error:

1821

except gnutls.errors.GNUTLSError as error:

2288

1822

logger.warning("GnuTLS bye failed",

2289

1823

exc_info=error)

2290

1824

2292

1826

def peer_certificate(session):

2293

1827

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

2294

1828

# If not an OpenPGP certificate...

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1829

if (gnutls.library.functions

1830

.gnutls_certificate_type_get(session._c_object)

1831

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1832

# ...do the normal thing

1833

return session.peer_certificate

2299

1834

list_size = ctypes.c_uint(1)

2300

cert_list = (gnutls.certificate_get_peers

1835

cert_list = (gnutls.library.functions

1836

.gnutls_certificate_get_peers

2301

1837

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

2302

1838

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

2303

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

1839

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

1840

" certificate")

2304

1841

if list_size.value == 0:

2305

1842

return None

2306

1843

cert = cert_list[0]

2310

1847

def fingerprint(openpgp):

2311

1848

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2312

1849

# New GnuTLS "datum" with the OpenPGP public key

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)))

1850

datum = (gnutls.library.types

1851

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

1852

ctypes.POINTER

1853

(ctypes.c_ubyte)),

1854

ctypes.c_uint(len(openpgp))))

2317

1855

# New empty GnuTLS certificate

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1856

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1857

(gnutls.library.functions

1858

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2320

1859

# Import the OpenPGP public key into the certificate

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1860

(gnutls.library.functions

1861

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

1862

gnutls.library.constants

1863

.GNUTLS_OPENPGP_FMT_RAW))

2323

1864

# Verify the self signature in the key

2324

1865

crtverify = ctypes.c_uint()

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1866

(gnutls.library.functions

1867

.gnutls_openpgp_crt_verify_self(crt, 0,

1868

ctypes.byref(crtverify)))

2327

1869

if crtverify.value != 0:

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1870

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1871

raise (gnutls.errors.CertificateSecurityError

1872

("Verify failed"))

2330

1873

# New buffer for the fingerprint

2331

1874

buf = ctypes.create_string_buffer(20)

2332

1875

buf_len = ctypes.c_size_t()

2333

1876

# Get the fingerprint from the certificate into the buffer

2334

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

2335

ctypes.byref(buf_len))

1877

(gnutls.library.functions

1878

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

1879

ctypes.byref(buf_len)))

2336

1880

# Deinit the certificate

2337

gnutls.openpgp_crt_deinit(crt)

1881

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2338

1882

# Convert the buffer to a Python bytestring

2339

1883

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

2340

1884

# Convert the bytestring to hexadecimal notation

2344

1888

2345

1889

class MultiprocessingMixIn(object):

2346

1890

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

2347

2348

1891

def sub_process_main(self, request, address):

2349

1892

try:

2350

1893

self.finish_request(request, address)

2362

1905

2363

1906

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2364

1907

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

2365

2366

1908

def process_request(self, request, client_address):

2367

1909

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

2368

1910

2389

1931

interface: None or a network interface name (string)

2390

1932

use_ipv6: Boolean; to use IPv6 or not

2391

1933

"""

2392

2393

1934

def __init__(self, server_address, RequestHandlerClass,

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

1935

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

2397

1936

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

2398

1937

creating a new one with socket.socket().

2399

1938

"""

2440

1979

self.interface)

2441

1980

else:

2442

1981

try:

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1982

self.socket.setsockopt(socket.SOL_SOCKET,

1983

SO_BINDTODEVICE,

1984

(self.interface + "\0")

1985

.encode("utf-8"))

2446

1986

except socket.error as error:

2447

1987

if error.errno == errno.EPERM:

2448

1988

logger.error("No permission to bind to"

2466

2006

self.server_address = (any_address,

2467

2007

self.server_address[1])

2468

2008

elif not self.server_address[1]:

2469

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

2009

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

2010

0)

2470

2011

# if self.interface:

2471

2012

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

2472

2013

# 0, # port

2484

2025

gnutls_priority GnuTLS priority string

2485

2026

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

2486

2027

2487

Assumes a GLib.MainLoop event loop.

2028

Assumes a gobject.MainLoop event loop.

2488

2029

"""

2489

2490

2030

def __init__(self, server_address, RequestHandlerClass,

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

2031

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

2032

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

2497

2033

self.enabled = False

2498

2034

self.clients = clients

2499

2035

if self.clients is None:

2505

2041

interface = interface,

2506

2042

use_ipv6 = use_ipv6,

2507

2043

socketfd = socketfd)

2508

2509

2044

def server_activate(self):

2510

2045

if self.enabled:

2511

2046

return socketserver.TCPServer.server_activate(self)

2515

2050

2516

2051

def add_pipe(self, parent_pipe, proc):

2517

2052

# Call "handle_ipc" for both data and EOF events

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))

2053

gobject.io_add_watch(parent_pipe.fileno(),

2054

gobject.IO_IN | gobject.IO_HUP,

2055

functools.partial(self.handle_ipc,

2056

parent_pipe =

2057

parent_pipe,

2058

proc = proc))

2524

2059

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

2060

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

2061

proc = None, client_object=None):

2529

2062

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

2530

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

2063

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

2531

2064

# Wait for other process to exit

2532

2065

proc.join()

2533

2066

return False

2540

2073

fpr = request[1]

2541

2074

address = request[2]

2542

2075

2543

for c in self.clients.values():

2076

for c in self.clients.itervalues():

2544

2077

if c.fingerprint == fpr:

2545

2078

client = c

2546

2079

break

2554

2087

parent_pipe.send(False)

2555

2088

return False

2556

2089

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))

2090

gobject.io_add_watch(parent_pipe.fileno(),

2091

gobject.IO_IN | gobject.IO_HUP,

2092

functools.partial(self.handle_ipc,

2093

parent_pipe =

2094

parent_pipe,

2095

proc = proc,

2096

client_object =

2097

client))

2564

2098

parent_pipe.send(True)

2565

2099

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

2566

2100

# same fileno

2572

2106

2573

2107

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

2574

2108

funcname)(*args,

2575

**kwargs)))

2109

**kwargs)))

2576

2110

2577

2111

if command == 'getattr':

2578

2112

attrname = request[1]

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

2113

if callable(client_object.__getattribute__(attrname)):

2114

parent_pipe.send(('function',))

2582

2115

else:

2583

parent_pipe.send((

2584

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

2116

parent_pipe.send(('data', client_object

2117

.__getattribute__(attrname)))

2585

2118

2586

2119

if command == 'setattr':

2587

2120

attrname = request[1]

2618

2151

# avoid excessive use of external libraries.

2619

2152

2620

2153

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

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

2154

Token = collections.namedtuple("Token",

2155

("regexp", # To match token; if

2156

# "value" is not None,

2157

# must have a "group"

2158

# containing digits

2159

"value", # datetime.timedelta or

2160

# None

2161

"followers")) # Tokens valid after

2162

# this token

2626

2163

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

2627

2164

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

2628

2165

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

2629

2166

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

2630

2167

datetime.timedelta(seconds=1),

2631

frozenset((token_end, )))

2168

frozenset((token_end,)))

2632

2169

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

2633

2170

datetime.timedelta(minutes=1),

2634

2171

frozenset((token_second, token_end)))

2650

2187

frozenset((token_month, token_end)))

2651

2188

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

2652

2189

datetime.timedelta(weeks=1),

2653

frozenset((token_end, )))

2190

frozenset((token_end,)))

2654

2191

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

2655

2192

frozenset((token_year, token_month,

2656

2193

token_day, token_time,

2658

2195

# Define starting values

2659

2196

value = datetime.timedelta() # Value so far

2660

2197

found_token = None

2661

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

2198

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

2662

2199

s = duration # String left to parse

2663

2200

# Loop until end token is found

2664

2201

while found_token is not token_end:

2681

2218

break

2682

2219

else:

2683

2220

# No currently valid tokens were found

2684

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

2685

.format(duration))

2221

raise ValueError("Invalid RFC 3339 duration")

2686

2222

# End token found

2687

2223

return value

2688

2224

2725

2261

elif suffix == "w":

2726

2262

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

2727

2263

else:

2728

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

2264

raise ValueError("Unknown suffix {!r}"

2265

.format(suffix))

2729

2266

except IndexError as e:

2730

2267

raise ValueError(*(e.args))

2731

2268

timevalue += delta

2747

2284

# Close all standard open file descriptors

2748

2285

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

2749

2286

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

2750

raise OSError(errno.ENODEV,

2751

"{} not a character device"

2287

raise OSError(errno.ENODEV, "{} not a character device"

2752

2288

.format(os.devnull))

2753

2289

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

2754

2290

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

2820

2356

"port": "",

2821

2357

"debug": "False",

2822

2358

"priority":

2823

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

2824

":+SIGN-DSA-SHA256",

2359

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2825

2360

"servicename": "Mandos",

2826

2361

"use_dbus": "True",

2827

2362

"use_ipv6": "True",

2831

2366

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

2832

2367

"foreground": "False",

2833

2368

"zeroconf": "True",

2834

}

2369

}

2835

2370

2836

2371

# Parse config file for server-global settings

2837

2372

server_config = configparser.SafeConfigParser(server_defaults)

2838

2373

del server_defaults

2839

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

2374

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

2375

"mandos.conf"))

2840

2376

# Convert the SafeConfigParser object to a dict

2841

2377

server_settings = server_config.defaults()

2842

2378

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

2860

2396

# Override the settings from the config file with command line

2861

2397

# options, if set.

2862

2398

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

2863

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

2864

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

2865

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

2399

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

2400

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

2401

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

2866

2402

value = getattr(options, option)

2867

2403

if value is not None:

2868

2404

server_settings[option] = value

2883

2419

2884

2420

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

2885

2421

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")

2422

if (not server_settings["zeroconf"] and

2423

not (server_settings["port"]

2424

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

2425

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

2426

" Zeroconf")

2890

2427

2891

2428

# For convenience

2892

2429

debug = server_settings["debug"]

2908

2445

initlogger(debug, level)

2909

2446

2910

2447

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

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

2448

syslogger.setFormatter(logging.Formatter

2449

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

2450

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

2451

.format(server_settings

2452

["servicename"])))

2915

2453

2916

2454

# Parse config file with clients

2917

2455

client_config = configparser.SafeConfigParser(Client

2925

2463

socketfd = None

2926

2464

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

2927

2465

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)

2466

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

2467

server_settings["port"]),

2468

ClientHandler,

2469

interface=(server_settings["interface"]

2470

or None),

2471

use_ipv6=use_ipv6,

2472

gnutls_priority=

2473

server_settings["priority"],

2474

use_dbus=use_dbus,

2475

socketfd=socketfd)

2936

2476

if not foreground:

2937

2477

pidfilename = "/run/mandos.pid"

2938

2478

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

2939

2479

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

2940

2480

pidfile = None

2941

2481

try:

2942

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

2482

pidfile = open(pidfilename, "w")

2943

2483

except IOError as e:

2944

2484

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

2945

2485

exc_info=e)

2946

2486

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2487

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

2950

2488

try:

2951

2489

uid = pwd.getpwnam(name).pw_uid

2952

gid = pwd.getpwnam(group).pw_gid

2490

gid = pwd.getpwnam(name).pw_gid

2953

2491

break

2954

2492

except KeyError:

2955

2493

continue

2959

2497

try:

2960

2498

os.setgid(gid)

2961

2499

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2965

2500

except OSError as error:

2966

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

2967

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

2968

2501

if error.errno != errno.EPERM:

2969

2502

raise

2970

2503

2973

2506

2974

2507

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

2975

2508

# - GnuTLS manual

2976

gnutls.global_set_log_level(11)

2509

gnutls.library.functions.gnutls_global_set_log_level(11)

2977

2510

2978

@gnutls.log_func

2511

@gnutls.library.types.gnutls_log_func

2979

2512

def debug_gnutls(level, string):

2980

2513

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

2981

2514

2982

gnutls.global_set_log_function(debug_gnutls)

2515

(gnutls.library.functions

2516

.gnutls_global_set_log_function(debug_gnutls))

2983

2517

2984

2518

# Redirect stdin so all checkers get /dev/null

2985

2519

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

2992

2526

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

2993

2527

daemon()

2994

2528

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()

2529

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

2530

# need to inform gobject that threads will be used.

2531

gobject.threads_init()

2998

2532

2999

2533

global main_loop

3000

2534

# From the Avahi example code

3001

2535

DBusGMainLoop(set_as_default=True)

3002

main_loop = GLib.MainLoop()

2536

main_loop = gobject.MainLoop()

3003

2537

bus = dbus.SystemBus()

3004

2538

# End of Avahi example code

3005

2539

if use_dbus:

3006

2540

try:

3007

2541

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

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:

2542

bus, do_not_queue=True)

2543

old_bus_name = (dbus.service.BusName

2544

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

2545

do_not_queue=True))

2546

except dbus.exceptions.NameExistsException as e:

3014

2547

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

3015

2548

use_dbus = False

3016

2549

server_settings["use_dbus"] = False

3017

2550

tcp_server.use_dbus = False

3018

2551

if zeroconf:

3019

2552

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)

2553

service = AvahiServiceToSyslog(name =

2554

server_settings["servicename"],

2555

servicetype = "_mandos._tcp",

2556

protocol = protocol, bus = bus)

3025

2557

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

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

2558

service.interface = (if_nametoindex

2559

(server_settings["interface"]

2560

.encode("utf-8")))

3028

2561

3029

2562

global multiprocessing_manager

3030

2563

multiprocessing_manager = multiprocessing.Manager()

3049

2582

if server_settings["restore"]:

3050

2583

try:

3051

2584

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

2585

clients_data, old_client_settings = (pickle.load

2586

(stored_state))

3097

2587

os.remove(stored_state_path)

3098

2588

except IOError as e:

3099

2589

if e.errno == errno.ENOENT:

3100

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

3101

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

2590

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

2591

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

3102

2592

else:

3103

2593

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

3104

2594

exc_info=e)

3105

2595

raise

3106

2596

except EOFError as e:

3107

2597

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

3108

"EOFError:",

3109

exc_info=e)

2598

"EOFError:", exc_info=e)

3110

2599

3111

2600

with PGPEngine() as pgp:

3112

2601

for client_name, client in clients_data.items():

3124

2613

# For each value in new config, check if it

3125

2614

# differs from the old config value (Except for

3126

2615

# the "secret" attribute)

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

2616

if (name != "secret" and

2617

value != old_client_settings[client_name]

2618

[name]):

3130

2619

client[name] = value

3131

2620

except KeyError:

3132

2621

pass

3133

2622

3134

2623

# Clients who has passed its expire date can still be

3135

# enabled if its last checker was successful. A Client

2624

# enabled if its last checker was successful. Clients

3136

2625

# whose checker succeeded before we stored its state is

3137

2626

# assumed to have successfully run all checkers during

3138

2627

# downtime.

3141

2630

if not client["last_checked_ok"]:

3142

2631

logger.warning(

3143

2632

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

2633

"performed a successful checker"

2634

.format(client_name))

3146

2635

client["enabled"] = False

3147

2636

elif client["last_checker_status"] != 0:

3148

2637

logger.warning(

3149

2638

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

2639

" checker failed with error code {}"

2640

.format(client_name,

2641

client["last_checker_status"]))

3154

2642

client["enabled"] = False

3155

2643

else:

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

2644

client["expires"] = (datetime.datetime

2645

.utcnow()

2646

+ client["timeout"])

3159

2647

logger.debug("Last checker succeeded,"

3160

" keeping {} enabled".format(

3161

client_name))

2648

" keeping {} enabled"

2649

.format(client_name))

3162

2650

try:

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

2651

client["secret"] = (

2652

pgp.decrypt(client["encrypted_secret"],

2653

client_settings[client_name]

2654

["secret"]))

3166

2655

except PGPError:

3167

2656

# If decryption fails, we use secret from new settings

3168

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

3169

client_name))

3170

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

3171

["secret"])

2657

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

2658

.format(client_name))

2659

client["secret"] = (

2660

client_settings[client_name]["secret"])

3172

2661

3173

2662

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

3174

2663

for client_name in (set(old_client_settings)

3181

2670

# Create all client objects

3182

2671

for client_name, client in clients_data.items():

3183

2672

tcp_server.clients[client_name] = client_class(

3184

name = client_name,

3185

settings = client,

2673

name = client_name, settings = client,

3186

2674

server_settings = server_settings)

3187

2675

3188

2676

if not tcp_server.clients:

3190

2678

3191

2679

if not foreground:

3192

2680

if pidfile is not None:

3193

pid = os.getpid()

3194

2681

try:

3195

2682

with pidfile:

3196

print(pid, file=pidfile)

2683

pid = os.getpid()

2684

pidfile.write("{}\n".format(pid).encode("utf-8"))

3197

2685

except IOError:

3198

2686

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

3199

2687

pidfilename, pid)

3200

2688

del pidfile

3201

2689

del pidfilename

3202

2690

3203

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

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2691

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

2692

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

3206

2693

3207

2694

if use_dbus:

3208

3209

@alternate_dbus_interfaces(

3210

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

3211

class MandosDBusService(DBusObjectWithObjectManager):

2695

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

2696

"se.bsnet.fukt.Mandos"})

2697

class MandosDBusService(DBusObjectWithProperties):

3212

2698

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

3213

3214

2699

def __init__(self):

3215

2700

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

3216

3217

2701

_interface = "se.recompile.Mandos"

3218

2702

2703

@dbus_interface_annotations(_interface)

2704

def _foo(self):

2705

return { "org.freedesktop.DBus.Property"

2706

".EmitsChangedSignal":

2707

"false"}

2708

3219

2709

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

3220

2710

def ClientAdded(self, objpath):

3221

2711

"D-Bus signal"

3226

2716

"D-Bus signal"

3227

2717

pass

3228

2718

3229

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

3230

"true"})

3231

2719

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

3232

2720

def ClientRemoved(self, objpath, name):

3233

2721

"D-Bus signal"

3234

2722

pass

3235

2723

3236

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

3237

"true"})

3238

2724

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

3239

2725

def GetAllClients(self):

3240

2726

"D-Bus method"

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2727

return dbus.Array(c.dbus_object_path

2728

for c in

2729

tcp_server.clients.itervalues())

3243

2730

3244

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

3245

"true"})

3246

2731

@dbus.service.method(_interface,

3247

2732

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

3248

2733

def GetAllClientsWithProperties(self):

3249

2734

"D-Bus method"

3250

2735

return dbus.Dictionary(

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2736

{ c.dbus_object_path: c.GetAll("")

2737

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

3254

2738

signature="oa{sv}")

3255

2739

3256

2740

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

3257

2741

def RemoveClient(self, object_path):

3258

2742

"D-Bus method"

3259

for c in tcp_server.clients.values():

2743

for c in tcp_server.clients.itervalues():

3260

2744

if c.dbus_object_path == object_path:

3261

2745

del tcp_server.clients[c.name]

3262

2746

c.remove_from_connection()

3263

# Don't signal the disabling

2747

# Don't signal anything except ClientRemoved

3264

2748

c.disable(quiet=True)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2749

# Emit D-Bus signal

2750

self.ClientRemoved(object_path, c.name)

3267

2751

return

3268

2752

raise KeyError(object_path)

3269

2753

3270

2754

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)

3307

2755

3308

2756

mandos_dbus_service = MandosDBusService()

3309

2757

3322

2770

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

3323

2771

clients = {}

3324

2772

with PGPEngine() as pgp:

3325

for client in tcp_server.clients.values():

2773

for client in tcp_server.clients.itervalues():

3326

2774

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

3327

2775

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

3328

2776

key)

3332

2780

# + secret.

3333

2781

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

3334

2782

"checker", "server_settings" }

3335

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

3336

.Object):

2783

for name, typ in (inspect.getmembers

2784

(dbus.service.Object)):

3337

2785

exclude.add(name)

3338

2786

3339

2787

client_dict["encrypted_secret"] = (client

3346

2794

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

3347

2795

3348

2796

try:

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

2797

with (tempfile.NamedTemporaryFile

2798

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

2799

dir=os.path.dirname(stored_state_path),

2800

delete=False)) as stored_state:

2801

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

2802

tempname=stored_state.name

3358

2803

os.rename(tempname, stored_state_path)

3359

2804

except (IOError, OSError) as e:

3360

2805

if not debug:

3375

2820

name, client = tcp_server.clients.popitem()

3376

2821

if use_dbus:

3377

2822

client.remove_from_connection()

3378

# Don't signal the disabling

2823

# Don't signal anything except ClientRemoved

3379

2824

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

3381

2825

if use_dbus:

3382

mandos_dbus_service.client_removed_signal(client)

2826

# Emit D-Bus signal

2827

mandos_dbus_service.ClientRemoved(client

2828

.dbus_object_path,

2829

client.name)

3383

2830

client_settings.clear()

3384

2831

3385

2832

atexit.register(cleanup)

3386

2833

3387

for client in tcp_server.clients.values():

2834

for client in tcp_server.clients.itervalues():

3388

2835

if use_dbus:

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2836

# Emit D-Bus signal

2837

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3391

2838

# Need to initiate checking of clients

3392

2839

if client.enabled:

3393

2840

client.init_checker()

3419

2866

sys.exit(1)

3420

2867

# End of Avahi example code

3421

2868

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))

2869

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

2870

lambda *args, **kwargs:

2871

(tcp_server.handle_request

2872

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

3426

2873

3427

2874

logger.debug("Starting main loop")

3428

2875

main_loop.run()

3438

2885

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

3439

2886

cleanup()

3440

2887

3441

3442

2888

if __name__ == '__main__':

3443

2889

main()