/mandos/release : revision 237.7.418

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

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

18

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

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

from future_builtins import *

37

try:

38

from future_builtins import *

39

except ImportError:

40

pass

38

41

39

import SocketServer as socketserver

42

try:

43

import SocketServer as socketserver

44

except ImportError:

45

import socketserver

40

46

import socket

41

47

import argparse

42

48

import datetime

43

49

import errno

44

import gnutls.crypto

45

import gnutls.connection

46

import gnutls.errors

47

import gnutls.library.functions

48

import gnutls.library.constants

49

import gnutls.library.types

50

import ConfigParser as configparser

50

try:

51

import ConfigParser as configparser

52

except ImportError:

53

import configparser

51

54

import sys

52

55

import re

53

56

import os

62

65

import struct

63

66

import fcntl

64

67

import functools

65

import cPickle as pickle

68

try:

69

import cPickle as pickle

70

except ImportError:

71

import pickle

66

72

import multiprocessing

67

73

import types

68

74

import binascii

69

75

import tempfile

70

76

import itertools

71

77

import collections

78

import codecs

72

79

73

80

import dbus

74

81

import dbus.service

75

import gobject

76

import avahi

82

from gi.repository import GLib

77

83

from dbus.mainloop.glib import DBusGMainLoop

78

84

import ctypes

79

85

import ctypes.util

80

86

import xml.dom.minidom

81

87

import inspect

82

88

89

# Try to find the value of SO_BINDTODEVICE:

83

90

try:

91

# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and

92

# newer, and it is also the most natural place for it:

84

93

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

85

94

except AttributeError:

86

95

try:

96

# This is where SO_BINDTODEVICE was up to and including Python

97

# 2.6, and also 3.2:

87

98

from IN import SO_BINDTODEVICE

88

99

except ImportError:

89

SO_BINDTODEVICE = None

90

91

version = "1.6.4"

100

# In Python 2.7 it seems to have been removed entirely.

101

# Try running the C preprocessor:

102

try:

103

cc = subprocess.Popen(["cc", "--language=c", "-E",

104

"/dev/stdin"],

105

stdin=subprocess.PIPE,

106

stdout=subprocess.PIPE)

107

stdout = cc.communicate(

108

"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]

109

SO_BINDTODEVICE = int(stdout.splitlines()[-1])

110

except (OSError, ValueError, IndexError):

111

# No value found

112

SO_BINDTODEVICE = None

113

114

if sys.version_info.major == 2:

115

str = unicode

116

117

version = "1.7.10"

92

118

stored_state_file = "clients.pickle"

93

119

94

120

logger = logging.getLogger()

95

121

syslogger = None

96

122

97

123

try:

98

if_nametoindex = (ctypes.cdll.LoadLibrary

99

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

100

.if_nametoindex)

124

if_nametoindex = ctypes.cdll.LoadLibrary(

125

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

101

126

except (OSError, AttributeError):

127

102

128

def if_nametoindex(interface):

103

129

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

104

130

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

105

131

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

106

132

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

133

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

134

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

111

135

return interface_index

112

136

113

137

138

def copy_function(func):

139

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

140

if sys.version_info.major == 2:

141

return types.FunctionType(func.func_code,

142

func.func_globals,

143

func.func_name,

144

func.func_defaults,

145

func.func_closure)

146

else:

147

return types.FunctionType(func.__code__,

148

func.__globals__,

149

func.__name__,

150

func.__defaults__,

151

func.__closure__)

152

153

114

154

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

115

155

"""init logger and add loglevel"""

116

156

117

syslogger = (logging.handlers.SysLogHandler

118

(facility =

119

logging.handlers.SysLogHandler.LOG_DAEMON,

120

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

157

global syslogger

158

syslogger = (logging.handlers.SysLogHandler(

159

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

160

address = "/dev/log"))

121

161

syslogger.setFormatter(logging.Formatter

122

162

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

123

163

' %(message)s'))

140

180

141

181

class PGPEngine(object):

142

182

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

183

143

184

def __init__(self):

144

185

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

186

self.gpg = "gpg"

187

try:

188

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

189

for line in output.splitlines():

190

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

191

if name == "gpg":

192

self.gpg = path

193

break

194

except OSError as e:

195

if e.errno != errno.ENOENT:

196

raise

145

197

self.gnupgargs = ['--batch',

146

'--home', self.tempdir,

198

'--homedir', self.tempdir,

147

199

'--force-mdc',

148

'--quiet',

149

'--no-use-agent']

200

'--quiet']

201

# Only GPG version 1 has the --no-use-agent option.

202

if self.gpg == "gpg" or self.gpg.endswith("/gpg"):

203

self.gnupgargs.append("--no-use-agent")

150

204

151

205

def __enter__(self):

152

206

return self

184

238

185

239

def encrypt(self, data, password):

186

240

passphrase = self.password_encode(password)

187

with tempfile.NamedTemporaryFile(dir=self.tempdir

188

) as passfile:

241

with tempfile.NamedTemporaryFile(

242

dir=self.tempdir) as passfile:

189

243

passfile.write(passphrase)

190

244

passfile.flush()

191

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

245

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

192

246

'--passphrase-file',

193

247

passfile.name]

194

248

+ self.gnupgargs,

202

256

203

257

def decrypt(self, data, password):

204

258

passphrase = self.password_encode(password)

205

with tempfile.NamedTemporaryFile(dir = self.tempdir

206

) as passfile:

259

with tempfile.NamedTemporaryFile(

260

dir = self.tempdir) as passfile:

207

261

passfile.write(passphrase)

208

262

passfile.flush()

209

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

263

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

210

264

'--passphrase-file',

211

265

passfile.name]

212

266

+ self.gnupgargs,

213

267

stdin = subprocess.PIPE,

214

268

stdout = subprocess.PIPE,

215

269

stderr = subprocess.PIPE)

216

decrypted_plaintext, err = proc.communicate(input

217

= data)

270

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

218

271

if proc.returncode != 0:

219

272

raise PGPError(err)

220

273

return decrypted_plaintext

221

274

275

# Pretend that we have an Avahi module

276

class Avahi(object):

277

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

278

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

279

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

280

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

281

PROTO_INET = 0 # avahi-common/address.h

282

PROTO_INET6 = 1 # avahi-common/address.h

283

DBUS_NAME = "org.freedesktop.Avahi"

284

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

285

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

286

DBUS_PATH_SERVER = "/"

287

def string_array_to_txt_array(self, t):

288

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

289

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

290

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

291

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

292

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

293

SERVER_INVALID = 0 # avahi-common/defs.h

294

SERVER_REGISTERING = 1 # avahi-common/defs.h

295

SERVER_RUNNING = 2 # avahi-common/defs.h

296

SERVER_COLLISION = 3 # avahi-common/defs.h

297

SERVER_FAILURE = 4 # avahi-common/defs.h

298

avahi = Avahi()

222

299

223

300

class AvahiError(Exception):

224

301

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

225

302

self.value = value

226

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

227

def __unicode__(self):

228

return unicode(repr(self.value))

303

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

304

**kwargs)

305

229

306

230

307

class AvahiServiceError(AvahiError):

231

308

pass

232

309

310

233

311

class AvahiGroupError(AvahiError):

234

312

pass

235

313

255

333

bus: dbus.SystemBus()

256

334

"""

257

335

258

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

259

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

260

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

261

protocol = avahi.PROTO_UNSPEC, bus = None):

336

def __init__(self,

337

interface = avahi.IF_UNSPEC,

338

name = None,

339

servicetype = None,

340

port = None,

341

TXT = None,

342

domain = "",

343

host = "",

344

max_renames = 32768,

345

protocol = avahi.PROTO_UNSPEC,

346

bus = None):

262

347

self.interface = interface

263

348

self.name = name

264

349

self.type = servicetype

274

359

self.bus = bus

275

360

self.entry_group_state_changed_match = None

276

361

277

def rename(self):

362

def rename(self, remove=True):

278

363

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

279

364

if self.rename_count >= self.max_renames:

280

365

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

281

366

" after %i retries, exiting.",

282

367

self.rename_count)

283

368

raise AvahiServiceError("Too many renames")

284

self.name = unicode(self.server

285

.GetAlternativeServiceName(self.name))

369

self.name = str(

370

self.server.GetAlternativeServiceName(self.name))

371

self.rename_count += 1

286

372

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

287

373

self.name)

288

self.remove()

374

if remove:

375

self.remove()

289

376

try:

290

377

self.add()

291

378

except dbus.exceptions.DBusException as error:

292

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

293

self.cleanup()

294

os._exit(1)

295

self.rename_count += 1

379

if (error.get_dbus_name()

380

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

381

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

382

return self.rename(remove=False)

383

else:

384

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

385

self.cleanup()

386

os._exit(1)

296

387

297

388

def remove(self):

298

389

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

336

427

self.rename()

337

428

elif state == avahi.ENTRY_GROUP_FAILURE:

338

429

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

339

unicode(error))

340

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

341

.format(error))

430

str(error))

431

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

342

432

343

433

def cleanup(self):

344

434

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

354

444

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

355

445

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

356

446

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

357

bad_states = { avahi.SERVER_INVALID:

358

"Zeroconf server invalid",

359

avahi.SERVER_REGISTERING: None,

360

avahi.SERVER_COLLISION:

361

"Zeroconf server name collision",

362

avahi.SERVER_FAILURE:

363

"Zeroconf server failure" }

447

bad_states = {

448

avahi.SERVER_INVALID: "Zeroconf server invalid",

449

avahi.SERVER_REGISTERING: None,

450

avahi.SERVER_COLLISION: "Zeroconf server name collision",

451

avahi.SERVER_FAILURE: "Zeroconf server failure",

452

}

364

453

if state in bad_states:

365

454

if bad_states[state] is not None:

366

455

if error is None:

369

458

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

370

459

self.cleanup()

371

460

elif state == avahi.SERVER_RUNNING:

372

self.add()

461

try:

462

self.add()

463

except dbus.exceptions.DBusException as error:

464

if (error.get_dbus_name()

465

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

466

logger.info("Local Zeroconf service name"

467

" collision.")

468

return self.rename(remove=False)

469

else:

470

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

471

self.cleanup()

472

os._exit(1)

373

473

else:

374

474

if error is None:

375

475

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

385

485

follow_name_owner_changes=True),

386

486

avahi.DBUS_INTERFACE_SERVER)

387

487

self.server.connect_to_signal("StateChanged",

388

self.server_state_changed)

488

self.server_state_changed)

389

489

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

390

490

391

491

392

492

class AvahiServiceToSyslog(AvahiService):

393

def rename(self):

493

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

394

494

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

395

ret = AvahiService.rename(self)

396

syslogger.setFormatter(logging.Formatter

397

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

398

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

399

.format(self.name)))

495

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

496

syslogger.setFormatter(logging.Formatter(

497

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

498

.format(self.name)))

400

499

return ret

401

500

402

403

def timedelta_to_milliseconds(td):

404

"Convert a datetime.timedelta() to milliseconds"

405

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

406

+ (td.seconds * 1000)

407

+ (td.microseconds // 1000))

408

501

# Pretend that we have a GnuTLS module

502

class GnuTLS(object):

503

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

504

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

505

506

_library = ctypes.cdll.LoadLibrary(

507

ctypes.util.find_library("gnutls"))

508

_need_version = b"3.3.0"

509

def __init__(self):

510

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

511

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

512

# happens.

513

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

514

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

515

.format(self._need_version))

516

517

# Unless otherwise indicated, the constants and types below are

518

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

519

520

# Constants

521

E_SUCCESS = 0

522

E_INTERRUPTED = -52

523

E_AGAIN = -28

524

CRT_OPENPGP = 2

525

CLIENT = 2

526

SHUT_RDWR = 0

527

CRD_CERTIFICATE = 1

528

E_NO_CERTIFICATE_FOUND = -49

529

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

530

531

# Types

532

class session_int(ctypes.Structure):

533

_fields_ = []

534

session_t = ctypes.POINTER(session_int)

535

class certificate_credentials_st(ctypes.Structure):

536

_fields_ = []

537

certificate_credentials_t = ctypes.POINTER(

538

certificate_credentials_st)

539

certificate_type_t = ctypes.c_int

540

class datum_t(ctypes.Structure):

541

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

542

('size', ctypes.c_uint)]

543

class openpgp_crt_int(ctypes.Structure):

544

_fields_ = []

545

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

546

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

547

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

548

credentials_type_t = ctypes.c_int

549

transport_ptr_t = ctypes.c_void_p

550

close_request_t = ctypes.c_int

551

552

# Exceptions

553

class Error(Exception):

554

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

555

# exception might be raised from within GnuTLS.__init__,

556

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

557

# global variable has happened.

558

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

559

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

560

# code is passed, convert it to a string with

561

# gnutls.strerror()

562

self.code = code

563

if message is None and code is not None:

564

message = GnuTLS.strerror(code)

565

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

566

message, *args)

567

568

class CertificateSecurityError(Error):

569

pass

570

571

# Classes

572

class Credentials(object):

573

def __init__(self):

574

self._c_object = gnutls.certificate_credentials_t()

575

gnutls.certificate_allocate_credentials(

576

ctypes.byref(self._c_object))

577

self.type = gnutls.CRD_CERTIFICATE

578

579

def __del__(self):

580

gnutls.certificate_free_credentials(self._c_object)

581

582

class ClientSession(object):

583

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

584

self._c_object = gnutls.session_t()

585

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

586

gnutls.set_default_priority(self._c_object)

587

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

588

gnutls.handshake_set_private_extensions(self._c_object,

589

True)

590

self.socket = socket

591

if credentials is None:

592

credentials = gnutls.Credentials()

593

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

594

ctypes.cast(credentials._c_object,

595

ctypes.c_void_p))

596

self.credentials = credentials

597

598

def __del__(self):

599

gnutls.deinit(self._c_object)

600

601

def handshake(self):

602

return gnutls.handshake(self._c_object)

603

604

def send(self, data):

605

data = bytes(data)

606

data_len = len(data)

607

while data_len > 0:

608

data_len -= gnutls.record_send(self._c_object,

609

data[-data_len:],

610

data_len)

611

612

def bye(self):

613

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

614

615

# Error handling functions

616

def _error_code(result):

617

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

618

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

619

if result >= 0:

620

return result

621

if result == gnutls.E_NO_CERTIFICATE_FOUND:

622

raise gnutls.CertificateSecurityError(code = result)

623

raise gnutls.Error(code = result)

624

625

def _retry_on_error(result, func, arguments):

626

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

627

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

628

while result < 0:

629

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

630

return _error_code(result)

631

result = func(*arguments)

632

return result

633

634

# Unless otherwise indicated, the function declarations below are

635

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

636

637

# Functions

638

priority_set_direct = _library.gnutls_priority_set_direct

639

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

640

ctypes.POINTER(ctypes.c_char_p)]

641

priority_set_direct.restype = _error_code

642

643

init = _library.gnutls_init

644

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

645

init.restype = _error_code

646

647

set_default_priority = _library.gnutls_set_default_priority

648

set_default_priority.argtypes = [session_t]

649

set_default_priority.restype = _error_code

650

651

record_send = _library.gnutls_record_send

652

record_send.argtypes = [session_t, ctypes.c_void_p,

653

ctypes.c_size_t]

654

record_send.restype = ctypes.c_ssize_t

655

record_send.errcheck = _retry_on_error

656

657

certificate_allocate_credentials = (

658

_library.gnutls_certificate_allocate_credentials)

659

certificate_allocate_credentials.argtypes = [

660

ctypes.POINTER(certificate_credentials_t)]

661

certificate_allocate_credentials.restype = _error_code

662

663

certificate_free_credentials = (

664

_library.gnutls_certificate_free_credentials)

665

certificate_free_credentials.argtypes = [certificate_credentials_t]

666

certificate_free_credentials.restype = None

667

668

handshake_set_private_extensions = (

669

_library.gnutls_handshake_set_private_extensions)

670

handshake_set_private_extensions.argtypes = [session_t,

671

ctypes.c_int]

672

handshake_set_private_extensions.restype = None

673

674

credentials_set = _library.gnutls_credentials_set

675

credentials_set.argtypes = [session_t, credentials_type_t,

676

ctypes.c_void_p]

677

credentials_set.restype = _error_code

678

679

strerror = _library.gnutls_strerror

680

strerror.argtypes = [ctypes.c_int]

681

strerror.restype = ctypes.c_char_p

682

683

certificate_type_get = _library.gnutls_certificate_type_get

684

certificate_type_get.argtypes = [session_t]

685

certificate_type_get.restype = _error_code

686

687

certificate_get_peers = _library.gnutls_certificate_get_peers

688

certificate_get_peers.argtypes = [session_t,

689

ctypes.POINTER(ctypes.c_uint)]

690

certificate_get_peers.restype = ctypes.POINTER(datum_t)

691

692

global_set_log_level = _library.gnutls_global_set_log_level

693

global_set_log_level.argtypes = [ctypes.c_int]

694

global_set_log_level.restype = None

695

696

global_set_log_function = _library.gnutls_global_set_log_function

697

global_set_log_function.argtypes = [log_func]

698

global_set_log_function.restype = None

699

700

deinit = _library.gnutls_deinit

701

deinit.argtypes = [session_t]

702

deinit.restype = None

703

704

handshake = _library.gnutls_handshake

705

handshake.argtypes = [session_t]

706

handshake.restype = _error_code

707

handshake.errcheck = _retry_on_error

708

709

transport_set_ptr = _library.gnutls_transport_set_ptr

710

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

711

transport_set_ptr.restype = None

712

713

bye = _library.gnutls_bye

714

bye.argtypes = [session_t, close_request_t]

715

bye.restype = _error_code

716

bye.errcheck = _retry_on_error

717

718

check_version = _library.gnutls_check_version

719

check_version.argtypes = [ctypes.c_char_p]

720

check_version.restype = ctypes.c_char_p

721

722

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

723

724

openpgp_crt_init = _library.gnutls_openpgp_crt_init

725

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

726

openpgp_crt_init.restype = _error_code

727

728

openpgp_crt_import = _library.gnutls_openpgp_crt_import

729

openpgp_crt_import.argtypes = [openpgp_crt_t,

730

ctypes.POINTER(datum_t),

731

openpgp_crt_fmt_t]

732

openpgp_crt_import.restype = _error_code

733

734

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

735

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

736

ctypes.POINTER(ctypes.c_uint)]

737

openpgp_crt_verify_self.restype = _error_code

738

739

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

740

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

741

openpgp_crt_deinit.restype = None

742

743

openpgp_crt_get_fingerprint = (

744

_library.gnutls_openpgp_crt_get_fingerprint)

745

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

746

ctypes.c_void_p,

747

ctypes.POINTER(

748

ctypes.c_size_t)]

749

openpgp_crt_get_fingerprint.restype = _error_code

750

751

# Remove non-public functions

752

del _error_code, _retry_on_error

753

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

754

gnutls = GnuTLS()

755

756

def call_pipe(connection, # : multiprocessing.Connection

757

func, *args, **kwargs):

758

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

759

760

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

761

return value on the provided multiprocessing.Connection.

762

"""

763

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

764

connection.close()

409

765

410

766

class Client(object):

411

767

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

417

773

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

418

774

to see if the client lives.

419

775

'None' if no process is running.

420

checker_callback_tag: a gobject event source tag, or None

776

checker_callback_tag: a GLib event source tag, or None

421

777

checker_command: string; External command which is run to check

422

778

if client lives. %() expansions are done at

423

779

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

424

780

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

425

checker_initiator_tag: a gobject event source tag, or None

781

checker_initiator_tag: a GLib event source tag, or None

426

782

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

427

783

client_structure: Object describing what attributes a client has

428

784

and is used for storing the client at exit

429

785

current_checker_command: string; current running checker_command

430

disable_initiator_tag: a gobject event source tag, or None

786

disable_initiator_tag: a GLib event source tag, or None

431

787

enabled: bool()

432

788

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

433

789

uniquely identify the client

438

794

last_checker_status: integer between 0 and 255 reflecting exit

439

795

status of last checker. -1 reflects crashed

440

796

checker, -2 means no checker completed yet.

797

last_checker_signal: The signal which killed the last checker, if

798

last_checker_status is -1

441

799

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

442

800

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

443

801

D-Bus identifiers

456

814

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

457

815

"last_approval_request", "last_checked_ok",

458

816

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

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

}

469

470

def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

473

474

def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

477

478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

817

client_defaults = {

818

"timeout": "PT5M",

819

"extended_timeout": "PT15M",

820

"interval": "PT2M",

821

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

822

"host": "",

823

"approval_delay": "PT0S",

824

"approval_duration": "PT1S",

825

"approved_by_default": "True",

826

"enabled": "True",

827

}

484

828

485

829

@staticmethod

486

830

def config_parser(config):

502

846

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

503

847

"enabled")

504

848

849

# Uppercase and remove spaces from fingerprint for later

850

# comparison purposes with return value from the

851

# fingerprint() function

505

852

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

506

853

.replace(" ", ""))

507

854

if "secret" in section:

508

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

855

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

856

.encode("utf-8"),

857

"base64")

509

858

elif "secfile" in section:

510

859

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

511

860

(section["secfile"])),

512

861

"rb") as secfile:

513

862

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

514

863

else:

515

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

864

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

516

865

.format(section))

517

866

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

518

867

client["extended_timeout"] = string_to_delta(

535

884

server_settings = {}

536

885

self.server_settings = server_settings

537

886

# adding all client settings

538

for setting, value in settings.iteritems():

887

for setting, value in settings.items():

539

888

setattr(self, setting, value)

540

889

541

890

if self.enabled:

549

898

self.expires = None

550

899

551

900

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

555

901

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

556

902

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

557

903

datetime.datetime.utcnow())

564

910

self.current_checker_command = None

565

911

self.approved = None

566

912

self.approvals_pending = 0

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

913

self.changedstate = multiprocessing_manager.Condition(

914

multiprocessing_manager.Lock())

915

self.client_structure = [attr

916

for attr in self.__dict__.keys()

572

917

if not attr.startswith("_")]

573

918

self.client_structure.append("client_structure")

574

919

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

920

for name, t in inspect.getmembers(

921

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

579

922

if not name.startswith("_"):

580

923

self.client_structure.append(name)

581

924

602

945

if not quiet:

603

946

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

604

947

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

605

gobject.source_remove(self.disable_initiator_tag)

948

GLib.source_remove(self.disable_initiator_tag)

606

949

self.disable_initiator_tag = None

607

950

self.expires = None

608

951

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

609

gobject.source_remove(self.checker_initiator_tag)

952

GLib.source_remove(self.checker_initiator_tag)

610

953

self.checker_initiator_tag = None

611

954

self.stop_checker()

612

955

self.enabled = False

613

956

if not quiet:

614

957

self.send_changedstate()

615

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

958

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

616

959

return False

617

960

618

961

def __del__(self):

622

965

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

623

966

# and every interval from then on.

624

967

if self.checker_initiator_tag is not None:

625

gobject.source_remove(self.checker_initiator_tag)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

968

GLib.source_remove(self.checker_initiator_tag)

969

self.checker_initiator_tag = GLib.timeout_add(

970

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

971

self.start_checker)

629

972

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

630

973

if self.disable_initiator_tag is not None:

631

gobject.source_remove(self.disable_initiator_tag)

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

974

GLib.source_remove(self.disable_initiator_tag)

975

self.disable_initiator_tag = GLib.timeout_add(

976

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

635

977

# Also start a new checker *right now*.

636

978

self.start_checker()

637

979

638

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

980

def checker_callback(self, source, condition, connection,

981

command):

639

982

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

640

983

self.checker_callback_tag = None

641

984

self.checker = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

985

# Read return code from connection (see call_pipe)

986

returncode = connection.recv()

987

connection.close()

988

989

if returncode >= 0:

990

self.last_checker_status = returncode

991

self.last_checker_signal = None

644

992

if self.last_checker_status == 0:

645

993

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

646

994

vars(self))

647

995

self.checked_ok()

648

996

else:

649

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

650

vars(self))

997

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

651

998

else:

652

999

self.last_checker_status = -1

1000

self.last_checker_signal = -returncode

653

1001

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

654

1002

vars(self))

1003

return False

655

1004

656

1005

def checked_ok(self):

657

1006

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

658

1007

self.last_checked_ok = datetime.datetime.utcnow()

659

1008

self.last_checker_status = 0

1009

self.last_checker_signal = None

660

1010

self.bump_timeout()

661

1011

662

1012

def bump_timeout(self, timeout=None):

664

1014

if timeout is None:

665

1015

timeout = self.timeout

666

1016

if self.disable_initiator_tag is not None:

667

gobject.source_remove(self.disable_initiator_tag)

1017

GLib.source_remove(self.disable_initiator_tag)

668

1018

self.disable_initiator_tag = None

669

1019

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

1020

self.disable_initiator_tag = GLib.timeout_add(

1021

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

673

1022

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

674

1023

675

1024

def need_approval(self):

689

1038

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

690

1039

# should be.

691

1040

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

1041

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

1042

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

1043

self.checker.join()

1044

self.checker = None

706

1045

# Start a new checker if needed

707

1046

if self.checker is None:

708

1047

# Escape attributes for the shell

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

1048

escaped_attrs = {

1049

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

1050

for attr in self.runtime_expansions }

713

1051

try:

714

1052

command = self.checker_command % escaped_attrs

715

1053

except TypeError as error:

716

1054

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

717

self.checker_command, exc_info=error)

718

return True # Try again later

1055

self.checker_command,

1056

exc_info=error)

1057

return True # Try again later

719

1058

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

741

exc_info=error)

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

761

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

1059

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

1060

self.name)

1061

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

1062

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

1063

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

1064

# always replaced by /dev/null.)

1065

# The exception is when not debugging but nevertheless

1066

# running in the foreground; use the previously

1067

# created wnull.

1068

popen_args = { "close_fds": True,

1069

"shell": True,

1070

"cwd": "/" }

1071

if (not self.server_settings["debug"]

1072

and self.server_settings["foreground"]):

1073

popen_args.update({"stdout": wnull,

1074

"stderr": wnull })

1075

pipe = multiprocessing.Pipe(duplex = False)

1076

self.checker = multiprocessing.Process(

1077

target = call_pipe,

1078

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

1079

kwargs = popen_args)

1080

self.checker.start()

1081

self.checker_callback_tag = GLib.io_add_watch(

1082

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

1083

self.checker_callback, pipe[0], command)

1084

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

762

1085

return True

763

1086

764

1087

def stop_checker(self):

765

1088

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

766

1089

if self.checker_callback_tag:

767

gobject.source_remove(self.checker_callback_tag)

1090

GLib.source_remove(self.checker_callback_tag)

768

1091

self.checker_callback_tag = None

769

1092

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

770

1093

return

771

1094

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

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

1095

self.checker.terminate()

780

1096

self.checker = None

781

1097

782

1098

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

1099

def dbus_service_property(dbus_interface,

1100

signature="v",

1101

access="readwrite",

1102

byte_arrays=False):

785

1103

"""Decorators for marking methods of a DBusObjectWithProperties to

786

1104

become properties on the D-Bus.

787

1105

796

1114

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

797

1115

if byte_arrays and signature != "ay":

798

1116

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

799

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

1117

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

1118

800

1119

def decorator(func):

801

1120

func._dbus_is_property = True

802

1121

func._dbus_interface = dbus_interface

807

1126

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

808

1127

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

809

1128

return func

1129

810

1130

return decorator

811

1131

812

1132

821

1141

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

822

1142

"false"}

823

1143

"""

1144

824

1145

def decorator(func):

825

1146

func._dbus_is_interface = True

826

1147

func._dbus_interface = dbus_interface

827

1148

func._dbus_name = dbus_interface

828

1149

return func

1150

829

1151

return decorator

830

1152

831

1153

833

1155

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

834

1156

Usage:

835

1157

1158

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

1159

"org.freedesktop.DBus.Property."

1160

"EmitsChangedSignal": "false"})

836

1161

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

837

1162

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

1163

def Property_dbus_property(self):

842

1164

return dbus.Boolean(False)

1165

1166

See also the DBusObjectWithAnnotations class.

843

1167

"""

1168

844

1169

def decorator(func):

845

1170

func._dbus_annotations = annotations

846

1171

return func

1172

847

1173

return decorator

848

1174

849

1175

850

1176

class DBusPropertyException(dbus.exceptions.DBusException):

851

1177

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

852

1178

"""

853

def __unicode__(self):

854

return unicode(str(self))

1179

pass

855

1180

856

1181

857

1182

class DBusPropertyAccessException(DBusPropertyException):

866

1191

pass

867

1192

868

1193

869

class DBusObjectWithProperties(dbus.service.Object):

870

"""A D-Bus object with properties.

1194

class DBusObjectWithAnnotations(dbus.service.Object):

1195

"""A D-Bus object with annotations.

871

1196

872

Classes inheriting from this can use the dbus_service_property

873

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

874

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

1197

Classes inheriting from this can use the dbus_annotations

1198

decorator to add annotations to methods or signals.

875

1199

"""

876

1200

877

1201

@staticmethod

881

1205

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

882

1206

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

883

1207

"""

884

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

1208

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

885

1209

False)

886

1210

887

1211

def _get_all_dbus_things(self, thing):

888

1212

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

889

1213

"""

890

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

891

name),

1214

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

892

1215

athing.__get__(self))

893

1216

for cls in self.__class__.__mro__

894

1217

for name, athing in

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

1218

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

1219

1220

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1221

out_signature = "s",

1222

path_keyword = 'object_path',

1223

connection_keyword = 'connection')

1224

def Introspect(self, object_path, connection):

1225

"""Overloading of standard D-Bus method.

1226

1227

Inserts annotation tags on methods and signals.

1228

"""

1229

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

1230

connection)

1231

try:

1232

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

1233

1234

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

1235

# Add annotation tags

1236

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

1237

for tag in if_tag.getElementsByTagName(typ):

1238

annots = dict()

1239

for name, prop in (self.

1240

_get_all_dbus_things(typ)):

1241

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

1242

and prop._dbus_interface

1243

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

1244

annots.update(getattr(

1245

prop, "_dbus_annotations", {}))

1246

for name, value in annots.items():

1247

ann_tag = document.createElement(

1248

"annotation")

1249

ann_tag.setAttribute("name", name)

1250

ann_tag.setAttribute("value", value)

1251

tag.appendChild(ann_tag)

1252

# Add interface annotation tags

1253

for annotation, value in dict(

1254

itertools.chain.from_iterable(

1255

annotations().items()

1256

for name, annotations

1257

in self._get_all_dbus_things("interface")

1258

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

1259

)).items():

1260

ann_tag = document.createElement("annotation")

1261

ann_tag.setAttribute("name", annotation)

1262

ann_tag.setAttribute("value", value)

1263

if_tag.appendChild(ann_tag)

1264

# Fix argument name for the Introspect method itself

1265

if (if_tag.getAttribute("name")

1266

== dbus.INTROSPECTABLE_IFACE):

1267

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

1268

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

1269

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

1270

if (arg.getAttribute("direction")

1271

== "out"):

1272

arg.setAttribute("name",

1273

"xml_data")

1274

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

1275

document.unlink()

1276

except (AttributeError, xml.dom.DOMException,

1277

xml.parsers.expat.ExpatError) as error:

1278

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

1279

exc_info=error)

1280

return xmlstring

1281

1282

1283

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1284

"""A D-Bus object with properties.

1285

1286

Classes inheriting from this can use the dbus_service_property

1287

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

1288

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

1289

"""

897

1290

898

1291

def _get_dbus_property(self, interface_name, property_name):

899

1292

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

900

1293

property with the specified name and interface.

901

1294

"""

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

1295

for cls in self.__class__.__mro__:

1296

for name, value in inspect.getmembers(

1297

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

906

1298

if (value._dbus_name == property_name

907

1299

and value._dbus_interface == interface_name):

908

1300

return value.__get__(self)

909

1301

910

1302

# No such property

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

914

915

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

1303

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

1304

self.dbus_object_path, interface_name, property_name))

1305

1306

@classmethod

1307

def _get_all_interface_names(cls):

1308

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

1309

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

1310

"_dbus_interface", None)

1311

for x in (inspect.getmro(cls))

1312

for attr in dir(x))

1313

if name is not None)

1314

1315

@dbus.service.method(dbus.PROPERTIES_IFACE,

1316

in_signature="ss",

916

1317

out_signature="v")

917

1318

def Get(self, interface_name, property_name):

918

1319

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

937

1338

# signatures other than "ay".

938

1339

if prop._dbus_signature != "ay":

939

1340

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

940

"'ay' signature {0!r}"

1341

"'ay' signature {!r}"

941

1342

.format(prop._dbus_signature))

942

1343

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

943

1344

for byte in value))

944

1345

prop(value)

945

1346

946

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

1347

@dbus.service.method(dbus.PROPERTIES_IFACE,

1348

in_signature="s",

947

1349

out_signature="a{sv}")

948

1350

def GetAll(self, interface_name):

949

1351

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

964

1366

if not hasattr(value, "variant_level"):

965

1367

properties[name] = value

966

1368

continue

967

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

968

value.variant_level+1)

1369

properties[name] = type(value)(

1370

value, variant_level = value.variant_level + 1)

969

1371

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

970

1372

1373

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

1374

def PropertiesChanged(self, interface_name, changed_properties,

1375

invalidated_properties):

1376

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

1377

standard.

1378

"""

1379

pass

1380

971

1381

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

972

1382

out_signature="s",

973

1383

path_keyword='object_path',

977

1387

978

1388

Inserts property tags and interface annotation tags.

979

1389

"""

980

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

981

connection)

1390

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1391

object_path,

1392

connection)

982

1393

try:

983

1394

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

1395

984

1396

def make_tag(document, name, prop):

985

1397

e = document.createElement("property")

986

1398

e.setAttribute("name", name)

987

1399

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

988

1400

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

989

1401

return e

1402

990

1403

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

991

1404

# Add property tags

992

1405

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

995

1408

if prop._dbus_interface

996

1409

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

997

1410

if_tag.appendChild(tag)

998

# Add annotation tags

999

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

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1012

ann_tag = document.createElement(

1013

"annotation")

1014

ann_tag.setAttribute("name", name)

1015

ann_tag.setAttribute("value", value)

1016

tag.appendChild(ann_tag)

1017

# Add interface annotation tags

1018

for annotation, value in dict(

1019

itertools.chain.from_iterable(

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1023

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

1024

)).iteritems():

1025

ann_tag = document.createElement("annotation")

1026

ann_tag.setAttribute("name", annotation)

1027

ann_tag.setAttribute("value", value)

1028

if_tag.appendChild(ann_tag)

1411

# Add annotation tags for properties

1412

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

1413

annots = dict()

1414

for name, prop in self._get_all_dbus_things(

1415

"property"):

1416

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

1417

and prop._dbus_interface

1418

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

1419

annots.update(getattr(

1420

prop, "_dbus_annotations", {}))

1421

for name, value in annots.items():

1422

ann_tag = document.createElement(

1423

"annotation")

1424

ann_tag.setAttribute("name", name)

1425

ann_tag.setAttribute("value", value)

1426

tag.appendChild(ann_tag)

1029

1427

# Add the names to the return values for the

1030

1428

# "org.freedesktop.DBus.Properties" methods

1031

1429

if (if_tag.getAttribute("name")

1049

1447

exc_info=error)

1050

1448

return xmlstring

1051

1449

1450

try:

1451

dbus.OBJECT_MANAGER_IFACE

1452

except AttributeError:

1453

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

1454

1455

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1456

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

1457

1458

Classes inheriting from this exposes the standard

1459

GetManagedObjects call and the InterfacesAdded and

1460

InterfacesRemoved signals on the standard

1461

"org.freedesktop.DBus.ObjectManager" interface.

1462

1463

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

1464

manually.

1465

"""

1466

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1467

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

1468

def GetManagedObjects(self):

1469

"""This function must be overridden"""

1470

raise NotImplementedError()

1471

1472

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1473

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

1474

def InterfacesAdded(self, object_path, interfaces_and_properties):

1475

pass

1476

1477

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

1478

def InterfacesRemoved(self, object_path, interfaces):

1479

pass

1480

1481

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1482

out_signature = "s",

1483

path_keyword = 'object_path',

1484

connection_keyword = 'connection')

1485

def Introspect(self, object_path, connection):

1486

"""Overloading of standard D-Bus method.

1487

1488

Override return argument name of GetManagedObjects to be

1489

"objpath_interfaces_and_properties"

1490

"""

1491

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1492

object_path,

1493

connection)

1494

try:

1495

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

1496

1497

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

1498

# Fix argument name for the GetManagedObjects method

1499

if (if_tag.getAttribute("name")

1500

== dbus.OBJECT_MANAGER_IFACE):

1501

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

1502

if (cn.getAttribute("name")

1503

== "GetManagedObjects"):

1504

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

1505

if (arg.getAttribute("direction")

1506

== "out"):

1507

arg.setAttribute(

1508

"name",

1509

"objpath_interfaces"

1510

"_and_properties")

1511

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

1512

document.unlink()

1513

except (AttributeError, xml.dom.DOMException,

1514

xml.parsers.expat.ExpatError) as error:

1515

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

1516

exc_info = error)

1517

return xmlstring

1052

1518

1053

1519

def datetime_to_dbus(dt, variant_level=0):

1054

1520

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

1055

1521

if dt is None:

1056

1522

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1523

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

1059

1524

1060

1525

1061

1526

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1081

1546

(from DBusObjectWithProperties) and interfaces (from the

1082

1547

dbus_interface_annotations decorator).

1083

1548

"""

1549

1084

1550

def wrapper(cls):

1085

1551

for orig_interface_name, alt_interface_name in (

1086

alt_interface_names.iteritems()):

1552

alt_interface_names.items()):

1087

1553

attr = {}

1088

1554

interface_names = set()

1089

1555

# Go though all attributes of the class

1091

1557

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

1092

1558

# with the wrong interface name

1093

1559

if (not hasattr(attribute, "_dbus_interface")

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1560

or not attribute._dbus_interface.startswith(

1561

orig_interface_name)):

1096

1562

continue

1097

1563

# Create an alternate D-Bus interface name based on

1098

1564

# the current name

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1565

alt_interface = attribute._dbus_interface.replace(

1566

orig_interface_name, alt_interface_name)

1102

1567

interface_names.add(alt_interface)

1103

1568

# Is this a D-Bus signal?

1104

1569

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

1105

1570

# Extract the original non-method undecorated

1106

1571

# function by black magic

1107

nonmethod_func = (dict(

1572

if sys.version_info.major == 2:

1573

nonmethod_func = (dict(

1108

1574

zip(attribute.func_code.co_freevars,

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1575

attribute.__closure__))

1576

["func"].cell_contents)

1577

else:

1578

nonmethod_func = (dict(

1579

zip(attribute.__code__.co_freevars,

1580

attribute.__closure__))

1581

["func"].cell_contents)

1111

1582

# Create a new, but exactly alike, function

1112

1583

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

1113

1584

# with the alternate D-Bus interface name

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1585

new_function = copy_function(nonmethod_func)

1586

new_function = (dbus.service.signal(

1587

alt_interface,

1588

attribute._dbus_signature)(new_function))

1123

1589

# Copy annotations, if any

1124

1590

try:

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1591

new_function._dbus_annotations = dict(

1592

attribute._dbus_annotations)

1127

1593

except AttributeError:

1128

1594

pass

1129

1595

# Define a creator of a function to call both the

1134

1600

"""This function is a scope container to pass

1135

1601

func1 and func2 to the "call_both" function

1136

1602

outside of its arguments"""

1603

1604

@functools.wraps(func2)

1137

1605

def call_both(*args, **kwargs):

1138

1606

"""This function will emit two D-Bus

1139

1607

signals by calling func1 and func2"""

1140

1608

func1(*args, **kwargs)

1141

1609

func2(*args, **kwargs)

1610

# Make wrapper function look like a D-Bus signal

1611

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

1612

if name.startswith("_dbus_"):

1613

setattr(call_both, name, attr)

1614

1142

1615

return call_both

1143

1616

# Create the "call_both" function and add it to

1144

1617

# the class

1149

1622

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

1150

1623

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

1151

1624

# to the class.

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1625

attr[attrname] = (

1626

dbus.service.method(

1627

alt_interface,

1628

attribute._dbus_in_signature,

1629

attribute._dbus_out_signature)

1630

(copy_function(attribute)))

1162

1631

# Copy annotations, if any

1163

1632

try:

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1633

attr[attrname]._dbus_annotations = dict(

1634

attribute._dbus_annotations)

1166

1635

except AttributeError:

1167

1636

pass

1168

1637

# Is this a D-Bus property?

1171

1640

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

1172

1641

# property with the alternate D-Bus interface

1173

1642

# name. Add it to the class.

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1643

attr[attrname] = (dbus_service_property(

1644

alt_interface, attribute._dbus_signature,

1645

attribute._dbus_access,

1646

attribute._dbus_get_args_options

1647

["byte_arrays"])

1648

(copy_function(attribute)))

1187

1649

# Copy annotations, if any

1188

1650

try:

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1191

1653

except AttributeError:

1192

1654

pass

1193

1655

# Is this a D-Bus interface?

1196

1658

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

1197

1659

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

1198

1660

# to the class.

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1661

attr[attrname] = (

1662

dbus_interface_annotations(alt_interface)

1663

(copy_function(attribute)))

1207

1664

if deprecate:

1208

1665

# Deprecate all alternate interfaces

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1666

iname="_AlternateDBusNames_interface_annotation{}"

1210

1667

for interface_name in interface_names:

1668

1211

1669

@dbus_interface_annotations(interface_name)

1212

1670

def func(self):

1213

1671

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

1214

"true" }

1672

"true" }

1215

1673

# Find an unused name

1216

1674

for aname in (iname.format(i)

1217

1675

for i in itertools.count()):

1221

1679

if interface_names:

1222

1680

# Replace the class with a new subclass of it with

1223

1681

# methods, signals, etc. as created above.

1224

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

1225

(cls,), attr)

1682

if sys.version_info.major == 2:

1683

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

1684

(cls, ), attr)

1685

else:

1686

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

1687

(cls, ), attr)

1226

1688

return cls

1689

1227

1690

return wrapper

1228

1691

1229

1692

1230

1693

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

1231

"se.bsnet.fukt.Mandos"})

1694

"se.bsnet.fukt.Mandos"})

1232

1695

class ClientDBus(Client, DBusObjectWithProperties):

1233

1696

"""A Client class using D-Bus

1234

1697

1238

1701

"""

1239

1702

1240

1703

runtime_expansions = (Client.runtime_expansions

1241

+ ("dbus_object_path",))

1704

+ ("dbus_object_path", ))

1705

1706

_interface = "se.recompile.Mandos.Client"

1242

1707

1243

1708

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

1244

1709

1247

1712

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

1248

1713

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

1249

1714

# the D-Bus

1250

client_object_name = unicode(self.name).translate(

1715

client_object_name = str(self.name).translate(

1251

1716

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

1252

1717

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

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1718

self.dbus_object_path = dbus.ObjectPath(

1719

"/clients/" + client_object_name)

1255

1720

DBusObjectWithProperties.__init__(self, self.bus,

1256

1721

self.dbus_object_path)

1257

1722

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1723

def notifychangeproperty(transform_func, dbus_name,

1724

type_func=lambda x: x,

1725

variant_level=1,

1726

invalidate_only=False,

1727

_interface=_interface):

1261

1728

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

1262

1729

its changes to DBus.

1263

1730

1268

1735

to the D-Bus. Default: no transform

1269

1736

variant_level: D-Bus variant level. Default: 1

1270

1737

"""

1271

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

1738

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

1739

1272

1740

def setter(self, value):

1273

1741

if hasattr(self, "dbus_object_path"):

1274

1742

if (not hasattr(self, attrname) or

1275

1743

type_func(getattr(self, attrname, None))

1276

1744

!= type_func(value)):

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1745

if invalidate_only:

1746

self.PropertiesChanged(

1747

_interface, dbus.Dictionary(),

1748

dbus.Array((dbus_name, )))

1749

else:

1750

dbus_value = transform_func(

1751

type_func(value),

1752

variant_level = variant_level)

1753

self.PropertyChanged(dbus.String(dbus_name),

1754

dbus_value)

1755

self.PropertiesChanged(

1756

_interface,

1757

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

1758

dbus_value }),

1759

dbus.Array())

1282

1760

setattr(self, attrname, value)

1283

1761

1284

1762

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

1290

1768

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

1291

1769

last_enabled = notifychangeproperty(datetime_to_dbus,

1292

1770

"LastEnabled")

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1771

checker = notifychangeproperty(

1772

dbus.Boolean, "CheckerRunning",

1773

type_func = lambda checker: checker is not None)

1296

1774

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1297

1775

"LastCheckedOK")

1298

1776

last_checker_status = notifychangeproperty(dbus.Int16,

1301

1779

datetime_to_dbus, "LastApprovalRequest")

1302

1780

approved_by_default = notifychangeproperty(dbus.Boolean,

1303

1781

"ApprovedByDefault")

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1782

approval_delay = notifychangeproperty(

1783

dbus.UInt64, "ApprovalDelay",

1784

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

1308

1785

approval_duration = notifychangeproperty(

1309

1786

dbus.UInt64, "ApprovalDuration",

1310

type_func = timedelta_to_milliseconds)

1787

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

1311

1788

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1789

timeout = notifychangeproperty(

1790

dbus.UInt64, "Timeout",

1791

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

1315

1792

extended_timeout = notifychangeproperty(

1316

1793

dbus.UInt64, "ExtendedTimeout",

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1794

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

1795

interval = notifychangeproperty(

1796

dbus.UInt64, "Interval",

1797

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

1322

1798

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

1799

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

1800

invalidate_only=True)

1323

1801

1324

1802

del notifychangeproperty

1325

1803

1332

1810

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

1333

1811

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

1334

1812

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1813

def checker_callback(self, source, condition,

1814

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

1815

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

1816

connection, command, *args,

1817

**kwargs)

1818

exitstatus = self.last_checker_status

1819

if exitstatus >= 0:

1341

1820

# Emit D-Bus signal

1342

1821

self.CheckerCompleted(dbus.Int16(exitstatus),

1343

dbus.Int64(condition),

1822

# This is specific to GNU libC

1823

dbus.Int64(exitstatus << 8),

1344

1824

dbus.String(command))

1345

1825

else:

1346

1826

# Emit D-Bus signal

1347

1827

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

1348

dbus.Int64(condition),

1828

dbus.Int64(

1829

# This is specific to GNU libC

1830

(exitstatus << 8)

1831

| self.last_checker_signal),

1349

1832

dbus.String(command))

1350

1351

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

1352

*args, **kwargs)

1833

return ret

1353

1834

1354

1835

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

1355

1836

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

1367

1848

1368

1849

def approve(self, value=True):

1369

1850

self.approved = value

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1851

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

1852

* 1000), self._reset_approved)

1373

1853

self.send_changedstate()

1374

1854

1375

1855

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1377

1856

1378

1857

## Interfaces

1379

1858

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1385

1859

## Signals

1386

1860

1387

1861

# CheckerCompleted - signal

1397

1871

pass

1398

1872

1399

1873

# PropertyChanged - signal

1874

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

1400

1875

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

1401

1876

def PropertyChanged(self, property, value):

1402

1877

"D-Bus signal"

1436

1911

self.checked_ok()

1437

1912

1438

1913

# Enable - method

1914

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

1439

1915

@dbus.service.method(_interface)

1440

1916

def Enable(self):

1441

1917

"D-Bus method"

1442

1918

self.enable()

1443

1919

1444

1920

# StartChecker - method

1921

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

1445

1922

@dbus.service.method(_interface)

1446

1923

def StartChecker(self):

1447

1924

"D-Bus method"

1448

1925

self.start_checker()

1449

1926

1450

1927

# Disable - method

1928

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

1451

1929

@dbus.service.method(_interface)

1452

1930

def Disable(self):

1453

1931

"D-Bus method"

1454

1932

self.disable()

1455

1933

1456

1934

# StopChecker - method

1935

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

1457

1936

@dbus.service.method(_interface)

1458

1937

def StopChecker(self):

1459

1938

self.stop_checker()

1466

1945

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

1467

1946

1468

1947

# ApprovedByDefault - property

1469

@dbus_service_property(_interface, signature="b",

1948

@dbus_service_property(_interface,

1949

signature="b",

1470

1950

access="readwrite")

1471

1951

def ApprovedByDefault_dbus_property(self, value=None):

1472

1952

if value is None: # get

1474

1954

self.approved_by_default = bool(value)

1475

1955

1476

1956

# ApprovalDelay - property

1477

@dbus_service_property(_interface, signature="t",

1957

@dbus_service_property(_interface,

1958

signature="t",

1478

1959

access="readwrite")

1479

1960

def ApprovalDelay_dbus_property(self, value=None):

1480

1961

if value is None: # get

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1962

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

1963

* 1000)

1482

1964

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

1483

1965

1484

1966

# ApprovalDuration - property

1485

@dbus_service_property(_interface, signature="t",

1967

@dbus_service_property(_interface,

1968

signature="t",

1486

1969

access="readwrite")

1487

1970

def ApprovalDuration_dbus_property(self, value=None):

1488

1971

if value is None: # get

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1972

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

1973

* 1000)

1491

1974

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

1492

1975

1493

1976

# Name - property

1977

@dbus_annotations(

1978

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

1494

1979

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

1495

1980

def Name_dbus_property(self):

1496

1981

return dbus.String(self.name)

1497

1982

1498

1983

# Fingerprint - property

1984

@dbus_annotations(

1985

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

1499

1986

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

1500

1987

def Fingerprint_dbus_property(self):

1501

1988

return dbus.String(self.fingerprint)

1502

1989

1503

1990

# Host - property

1504

@dbus_service_property(_interface, signature="s",

1991

@dbus_service_property(_interface,

1992

signature="s",

1505

1993

access="readwrite")

1506

1994

def Host_dbus_property(self, value=None):

1507

1995

if value is None: # get

1508

1996

return dbus.String(self.host)

1509

self.host = unicode(value)

1997

self.host = str(value)

1510

1998

1511

1999

# Created - property

2000

@dbus_annotations(

2001

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

1512

2002

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

1513

2003

def Created_dbus_property(self):

1514

2004

return datetime_to_dbus(self.created)

1519

2009

return datetime_to_dbus(self.last_enabled)

1520

2010

1521

2011

# Enabled - property

1522

@dbus_service_property(_interface, signature="b",

2012

@dbus_service_property(_interface,

2013

signature="b",

1523

2014

access="readwrite")

1524

2015

def Enabled_dbus_property(self, value=None):

1525

2016

if value is None: # get

1530

2021

self.disable()

1531

2022

1532

2023

# LastCheckedOK - property

1533

@dbus_service_property(_interface, signature="s",

2024

@dbus_service_property(_interface,

2025

signature="s",

1534

2026

access="readwrite")

1535

2027

def LastCheckedOK_dbus_property(self, value=None):

1536

2028

if value is not None:

1539

2031

return datetime_to_dbus(self.last_checked_ok)

1540

2032

1541

2033

# LastCheckerStatus - property

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

2034

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

1544

2035

def LastCheckerStatus_dbus_property(self):

1545

2036

return dbus.Int16(self.last_checker_status)

1546

2037

1555

2046

return datetime_to_dbus(self.last_approval_request)

1556

2047

1557

2048

# Timeout - property

1558

@dbus_service_property(_interface, signature="t",

2049

@dbus_service_property(_interface,

2050

signature="t",

1559

2051

access="readwrite")

1560

2052

def Timeout_dbus_property(self, value=None):

1561

2053

if value is None: # get

1562

return dbus.UInt64(self.timeout_milliseconds())

2054

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

1563

2055

old_timeout = self.timeout

1564

2056

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

1565

2057

# Reschedule disabling

1573

2065

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

1574

2066

is None):

1575

2067

return

1576

gobject.source_remove(self.disable_initiator_tag)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

2068

GLib.source_remove(self.disable_initiator_tag)

2069

self.disable_initiator_tag = GLib.timeout_add(

2070

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

2071

self.disable)

1581

2072

1582

2073

# ExtendedTimeout - property

1583

@dbus_service_property(_interface, signature="t",

2074

@dbus_service_property(_interface,

2075

signature="t",

1584

2076

access="readwrite")

1585

2077

def ExtendedTimeout_dbus_property(self, value=None):

1586

2078

if value is None: # get

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

2079

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

2080

* 1000)

1588

2081

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

1589

2082

1590

2083

# Interval - property

1591

@dbus_service_property(_interface, signature="t",

2084

@dbus_service_property(_interface,

2085

signature="t",

1592

2086

access="readwrite")

1593

2087

def Interval_dbus_property(self, value=None):

1594

2088

if value is None: # get

1595

return dbus.UInt64(self.interval_milliseconds())

2089

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

1596

2090

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

1597

2091

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

1598

2092

return

1599

2093

if self.enabled:

1600

2094

# Reschedule checker run

1601

gobject.source_remove(self.checker_initiator_tag)

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

2095

GLib.source_remove(self.checker_initiator_tag)

2096

self.checker_initiator_tag = GLib.timeout_add(

2097

value, self.start_checker)

2098

self.start_checker() # Start one now, too

1605

2099

1606

2100

# Checker - property

1607

@dbus_service_property(_interface, signature="s",

2101

@dbus_service_property(_interface,

2102

signature="s",

1608

2103

access="readwrite")

1609

2104

def Checker_dbus_property(self, value=None):

1610

2105

if value is None: # get

1611

2106

return dbus.String(self.checker_command)

1612

self.checker_command = unicode(value)

2107

self.checker_command = str(value)

1613

2108

1614

2109

# CheckerRunning - property

1615

@dbus_service_property(_interface, signature="b",

2110

@dbus_service_property(_interface,

2111

signature="b",

1616

2112

access="readwrite")

1617

2113

def CheckerRunning_dbus_property(self, value=None):

1618

2114

if value is None: # get

1623

2119

self.stop_checker()

1624

2120

1625

2121

# ObjectPath - property

2122

@dbus_annotations(

2123

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

2124

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

1626

2125

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

1627

2126

def ObjectPath_dbus_property(self):

1628

2127

return self.dbus_object_path # is already a dbus.ObjectPath

1629

2128

1630

2129

# Secret = property

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

2130

@dbus_annotations(

2131

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

2132

"invalidates"})

2133

@dbus_service_property(_interface,

2134

signature="ay",

2135

access="write",

2136

byte_arrays=True)

1633

2137

def Secret_dbus_property(self, value):

1634

self.secret = str(value)

2138

self.secret = bytes(value)

1635

2139

1636

2140

del _interface

1637

2141

1641

2145

self._pipe = child_pipe

1642

2146

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

1643

2147

if not self._pipe.recv():

1644

raise KeyError()

2148

raise KeyError(fpr)

1645

2149

1646

2150

def __getattribute__(self, name):

1647

2151

if name == '_pipe':

1651

2155

if data[0] == 'data':

1652

2156

return data[1]

1653

2157

if data[0] == 'function':

2158

1654

2159

def func(*args, **kwargs):

1655

2160

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

1656

2161

return self._pipe.recv()[1]

2162

1657

2163

return func

1658

2164

1659

2165

def __setattr__(self, name, value):

1671

2177

def handle(self):

1672

2178

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

1673

2179

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

1674

unicode(self.client_address))

2180

str(self.client_address))

1675

2181

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

1676

2182

self.server.child_pipe.fileno())

1677

2183

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1682

1683

# Note: gnutls.connection.X509Credentials is really a

1684

# generic GnuTLS certificate credentials object so long as

1685

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

1686

# here despite using OpenPGP certificates.

2184

session = gnutls.ClientSession(self.request)

1687

2185

1688

2186

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

1689

2187

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

1693

2191

priority = self.server.gnutls_priority

1694

2192

if priority is None:

1695

2193

priority = "NORMAL"

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

2194

gnutls.priority_set_direct(session._c_object,

2195

priority.encode("utf-8"),

2196

None)

1699

2197

1700

2198

# Start communication using the Mandos protocol

1701

2199

# Get protocol number

1711

2209

# Start GnuTLS connection

1712

2210

try:

1713

2211

session.handshake()

1714

except gnutls.errors.GNUTLSError as error:

2212

except gnutls.Error as error:

1715

2213

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

1716

2214

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

1717

2215

# established. Just abandon the request.

1721

2219

approval_required = False

1722

2220

try:

1723

2221

try:

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1726

except (TypeError,

1727

gnutls.errors.GNUTLSError) as error:

2222

fpr = self.fingerprint(

2223

self.peer_certificate(session))

2224

except (TypeError, gnutls.Error) as error:

1728

2225

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

1729

2226

return

1730

2227

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

1743

2240

while True:

1744

2241

if not client.enabled:

1745

2242

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

1746

client.name)

2243

client.name)

1747

2244

if self.server.use_dbus:

1748

2245

# Emit D-Bus signal

1749

2246

client.Rejected("Disabled")

1758

2255

if self.server.use_dbus:

1759

2256

# Emit D-Bus signal

1760

2257

client.NeedApproval(

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

2258

client.approval_delay.total_seconds()

2259

* 1000, client.approved_by_default)

1763

2260

else:

1764

2261

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

1765

2262

client.name)

1771

2268

#wait until timeout or approved

1772

2269

time = datetime.datetime.now()

1773

2270

client.changedstate.acquire()

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

2271

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

1777

2272

client.changedstate.release()

1778

2273

time2 = datetime.datetime.now()

1779

2274

if (time2 - time) >= delay:

1790

2285

else:

1791

2286

delay -= time2 - time

1792

2287

1793

sent_size = 0

1794

while sent_size < len(client.secret):

1795

try:

1796

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

1797

except gnutls.errors.GNUTLSError as error:

1798

logger.warning("gnutls send failed",

1799

exc_info=error)

1800

return

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1804

sent_size += sent

2288

try:

2289

session.send(client.secret)

2290

except gnutls.Error as error:

2291

logger.warning("gnutls send failed",

2292

exc_info = error)

2293

return

1805

2294

1806

2295

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

1807

2296

# bump the timeout using extended_timeout

1815

2304

client.approvals_pending -= 1

1816

2305

try:

1817

2306

session.bye()

1818

except gnutls.errors.GNUTLSError as error:

2307

except gnutls.Error as error:

1819

2308

logger.warning("GnuTLS bye failed",

1820

2309

exc_info=error)

1821

2310

1823

2312

def peer_certificate(session):

1824

2313

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

1825

2314

# If not an OpenPGP certificate...

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1829

# ...do the normal thing

1830

return session.peer_certificate

2315

if (gnutls.certificate_type_get(session._c_object)

2316

!= gnutls.CRT_OPENPGP):

2317

# ...return invalid data

2318

return b""

1831

2319

list_size = ctypes.c_uint(1)

1832

cert_list = (gnutls.library.functions

1833

.gnutls_certificate_get_peers

2320

cert_list = (gnutls.certificate_get_peers

1834

2321

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

1835

2322

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

1836

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

1837

" certificate")

2323

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

1838

2324

if list_size.value == 0:

1839

2325

return None

1840

2326

cert = cert_list[0]

1844

2330

def fingerprint(openpgp):

1845

2331

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1846

2332

# New GnuTLS "datum" with the OpenPGP public key

1847

datum = (gnutls.library.types

1848

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

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

2333

datum = gnutls.datum_t(

2334

ctypes.cast(ctypes.c_char_p(openpgp),

2335

ctypes.POINTER(ctypes.c_ubyte)),

2336

ctypes.c_uint(len(openpgp)))

1852

2337

# New empty GnuTLS certificate

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2338

crt = gnutls.openpgp_crt_t()

2339

gnutls.openpgp_crt_init(ctypes.byref(crt))

1856

2340

# Import the OpenPGP public key into the certificate

1857

(gnutls.library.functions

1858

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

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

2341

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

2342

gnutls.OPENPGP_FMT_RAW)

1861

2343

# Verify the self signature in the key

1862

2344

crtverify = ctypes.c_uint()

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

2345

gnutls.openpgp_crt_verify_self(crt, 0,

2346

ctypes.byref(crtverify))

1866

2347

if crtverify.value != 0:

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

2348

gnutls.openpgp_crt_deinit(crt)

2349

raise gnutls.CertificateSecurityError("Verify failed")

1870

2350

# New buffer for the fingerprint

1871

2351

buf = ctypes.create_string_buffer(20)

1872

2352

buf_len = ctypes.c_size_t()

1873

2353

# Get the fingerprint from the certificate into the buffer

1874

(gnutls.library.functions

1875

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

1876

ctypes.byref(buf_len)))

2354

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

2355

ctypes.byref(buf_len))

1877

2356

# Deinit the certificate

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2357

gnutls.openpgp_crt_deinit(crt)

1879

2358

# Convert the buffer to a Python bytestring

1880

2359

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

1881

2360

# Convert the bytestring to hexadecimal notation

1885

2364

1886

2365

class MultiprocessingMixIn(object):

1887

2366

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

2367

1888

2368

def sub_process_main(self, request, address):

1889

2369

try:

1890

2370

self.finish_request(request, address)

1902

2382

1903

2383

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1904

2384

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

2385

1905

2386

def process_request(self, request, client_address):

1906

2387

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

1907

2388

1928

2409

interface: None or a network interface name (string)

1929

2410

use_ipv6: Boolean; to use IPv6 or not

1930

2411

"""

2412

1931

2413

def __init__(self, server_address, RequestHandlerClass,

1932

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

2414

interface=None,

2415

use_ipv6=True,

2416

socketfd=None):

1933

2417

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

1934

2418

creating a new one with socket.socket().

1935

2419

"""

1969

2453

"""This overrides the normal server_bind() function

1970

2454

to bind to an interface if one was specified, and also NOT to

1971

2455

bind to an address or port if they were not specified."""

2456

global SO_BINDTODEVICE

1972

2457

if self.interface is not None:

1973

2458

if SO_BINDTODEVICE is None:

1974

logger.error("SO_BINDTODEVICE does not exist;"

1975

" cannot bind to interface %s",

1976

self.interface)

1977

else:

1978

try:

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

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

1982

except socket.error as error:

1983

if error.errno == errno.EPERM:

1984

logger.error("No permission to bind to"

1985

" interface %s", self.interface)

1986

elif error.errno == errno.ENOPROTOOPT:

1987

logger.error("SO_BINDTODEVICE not available;"

1988

" cannot bind to interface %s",

1989

self.interface)

1990

elif error.errno == errno.ENODEV:

1991

logger.error("Interface %s does not exist,"

1992

" cannot bind", self.interface)

1993

else:

1994

raise

2459

# Fall back to a hard-coded value which seems to be

2460

# common enough.

2461

logger.warning("SO_BINDTODEVICE not found, trying 25")

2462

SO_BINDTODEVICE = 25

2463

try:

2464

self.socket.setsockopt(

2465

socket.SOL_SOCKET, SO_BINDTODEVICE,

2466

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

2467

except socket.error as error:

2468

if error.errno == errno.EPERM:

2469

logger.error("No permission to bind to"

2470

" interface %s", self.interface)

2471

elif error.errno == errno.ENOPROTOOPT:

2472

logger.error("SO_BINDTODEVICE not available;"

2473

" cannot bind to interface %s",

2474

self.interface)

2475

elif error.errno == errno.ENODEV:

2476

logger.error("Interface %s does not exist,"

2477

" cannot bind", self.interface)

2478

else:

2479

raise

1995

2480

# Only bind(2) the socket if we really need to.

1996

2481

if self.server_address[0] or self.server_address[1]:

1997

2482

if not self.server_address[0]:

2002

2487

self.server_address = (any_address,

2003

2488

self.server_address[1])

2004

2489

elif not self.server_address[1]:

2005

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

2006

0)

2490

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

2007

2491

# if self.interface:

2008

2492

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

2009

2493

# 0, # port

2021

2505

gnutls_priority GnuTLS priority string

2022

2506

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

2023

2507

2024

Assumes a gobject.MainLoop event loop.

2508

Assumes a GLib.MainLoop event loop.

2025

2509

"""

2510

2026

2511

def __init__(self, server_address, RequestHandlerClass,

2027

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

2028

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

2512

interface=None,

2513

use_ipv6=True,

2514

clients=None,

2515

gnutls_priority=None,

2516

use_dbus=True,

2517

socketfd=None):

2029

2518

self.enabled = False

2030

2519

self.clients = clients

2031

2520

if self.clients is None:

2037

2526

interface = interface,

2038

2527

use_ipv6 = use_ipv6,

2039

2528

socketfd = socketfd)

2529

2040

2530

def server_activate(self):

2041

2531

if self.enabled:

2042

2532

return socketserver.TCPServer.server_activate(self)

2046

2536

2047

2537

def add_pipe(self, parent_pipe, proc):

2048

2538

# Call "handle_ipc" for both data and EOF events

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2539

GLib.io_add_watch(

2540

parent_pipe.fileno(),

2541

GLib.IO_IN | GLib.IO_HUP,

2542

functools.partial(self.handle_ipc,

2543

parent_pipe = parent_pipe,

2544

proc = proc))

2055

2545

2056

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

2057

proc = None, client_object=None):

2546

def handle_ipc(self, source, condition,

2547

parent_pipe=None,

2548

proc = None,

2549

client_object=None):

2058

2550

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

2059

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

2551

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

2060

2552

# Wait for other process to exit

2061

2553

proc.join()

2062

2554

return False

2069

2561

fpr = request[1]

2070

2562

address = request[2]

2071

2563

2072

for c in self.clients.itervalues():

2564

for c in self.clients.values():

2073

2565

if c.fingerprint == fpr:

2074

2566

client = c

2075

2567

break

2083

2575

parent_pipe.send(False)

2084

2576

return False

2085

2577

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2578

GLib.io_add_watch(

2579

parent_pipe.fileno(),

2580

GLib.IO_IN | GLib.IO_HUP,

2581

functools.partial(self.handle_ipc,

2582

parent_pipe = parent_pipe,

2583

proc = proc,

2584

client_object = client))

2094

2585

parent_pipe.send(True)

2095

2586

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

2096

2587

# same fileno

2102

2593

2103

2594

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

2104

2595

funcname)(*args,

2105

**kwargs)))

2596

**kwargs)))

2106

2597

2107

2598

if command == 'getattr':

2108

2599

attrname = request[1]

2109

if callable(client_object.__getattribute__(attrname)):

2110

parent_pipe.send(('function',))

2600

if isinstance(client_object.__getattribute__(attrname),

2601

collections.Callable):

2602

parent_pipe.send(('function', ))

2111

2603

else:

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2604

parent_pipe.send((

2605

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

2114

2606

2115

2607

if command == 'setattr':

2116

2608

attrname = request[1]

2147

2639

# avoid excessive use of external libraries.

2148

2640

2149

2641

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

2150

Token = collections.namedtuple("Token",

2151

("regexp", # To match token; if

2152

# "value" is not None,

2153

# must have a "group"

2154

# containing digits

2155

"value", # datetime.timedelta or

2156

# None

2157

"followers")) # Tokens valid after

2158

# this token

2642

Token = collections.namedtuple("Token", (

2643

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

2644

# a "group" containing digits

2645

"value", # datetime.timedelta or None

2646

"followers")) # Tokens valid after this token

2159

2647

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

2160

2648

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

2161

2649

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

2162

2650

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

2163

2651

datetime.timedelta(seconds=1),

2164

frozenset((token_end,)))

2652

frozenset((token_end, )))

2165

2653

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

2166

2654

datetime.timedelta(minutes=1),

2167

2655

frozenset((token_second, token_end)))

2183

2671

frozenset((token_month, token_end)))

2184

2672

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

2185

2673

datetime.timedelta(weeks=1),

2186

frozenset((token_end,)))

2674

frozenset((token_end, )))

2187

2675

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

2188

2676

frozenset((token_year, token_month,

2189

2677

token_day, token_time,

2190

token_week))),

2678

token_week)))

2191

2679

# Define starting values

2192

2680

value = datetime.timedelta() # Value so far

2193

2681

found_token = None

2194

followers = frozenset(token_duration,) # Following valid tokens

2682

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

2195

2683

s = duration # String left to parse

2196

2684

# Loop until end token is found

2197

2685

while found_token is not token_end:

2214

2702

break

2215

2703

else:

2216

2704

# No currently valid tokens were found

2217

raise ValueError("Invalid RFC 3339 duration")

2705

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

2706

.format(duration))

2218

2707

# End token found

2219

2708

return value

2220

2709

2244

2733

timevalue = datetime.timedelta(0)

2245

2734

for s in interval.split():

2246

2735

try:

2247

suffix = unicode(s[-1])

2736

suffix = s[-1]

2248

2737

value = int(s[:-1])

2249

2738

if suffix == "d":

2250

2739

delta = datetime.timedelta(value)

2257

2746

elif suffix == "w":

2258

2747

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

2259

2748

else:

2260

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

2261

.format(suffix))

2749

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

2262

2750

except IndexError as e:

2263

2751

raise ValueError(*(e.args))

2264

2752

timevalue += delta

2281

2769

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

2282

2770

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

2283

2771

raise OSError(errno.ENODEV,

2284

"{0} not a character device"

2772

"{} not a character device"

2285

2773

.format(os.devnull))

2286

2774

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

2287

2775

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

2297

2785

2298

2786

parser = argparse.ArgumentParser()

2299

2787

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

2300

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

2788

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

2301

2789

help="show version number and exit")

2302

2790

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

2303

2791

help="Bind to interface IF")

2336

2824

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

2337

2825

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

2338

2826

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

2827

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

2828

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

2829

default=None)

2339

2830

2340

2831

options = parser.parse_args()

2341

2832

2350

2841

"port": "",

2351

2842

"debug": "False",

2352

2843

"priority":

2353

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

2844

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

2845

":+SIGN-DSA-SHA256",

2354

2846

"servicename": "Mandos",

2355

2847

"use_dbus": "True",

2356

2848

"use_ipv6": "True",

2359

2851

"socket": "",

2360

2852

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

2361

2853

"foreground": "False",

2362

}

2854

"zeroconf": "True",

2855

}

2363

2856

2364

2857

# Parse config file for server-global settings

2365

2858

server_config = configparser.SafeConfigParser(server_defaults)

2366

2859

del server_defaults

2367

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

2368

"mandos.conf"))

2860

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

2369

2861

# Convert the SafeConfigParser object to a dict

2370

2862

server_settings = server_config.defaults()

2371

2863

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

2389

2881

# Override the settings from the config file with command line

2390

2882

# options, if set.

2391

2883

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

2392

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

2393

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

2394

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

2884

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

2885

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

2886

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

2395

2887

value = getattr(options, option)

2396

2888

if value is not None:

2397

2889

server_settings[option] = value

2398

2890

del options

2399

2891

# Force all strings to be unicode

2400

2892

for option in server_settings.keys():

2401

if type(server_settings[option]) is str:

2402

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

2893

if isinstance(server_settings[option], bytes):

2894

server_settings[option] = (server_settings[option]

2895

.decode("utf-8"))

2403

2896

# Force all boolean options to be boolean

2404

2897

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

2405

"foreground"):

2898

"foreground", "zeroconf"):

2406

2899

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

2407

2900

# Debug implies foreground

2408

2901

if server_settings["debug"]:

2411

2904

2412

2905

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

2413

2906

2907

if (not server_settings["zeroconf"]

2908

and not (server_settings["port"]

2909

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

2910

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

2911

2414

2912

# For convenience

2415

2913

debug = server_settings["debug"]

2416

2914

debuglevel = server_settings["debuglevel"]

2419

2917

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

2420

2918

stored_state_file)

2421

2919

foreground = server_settings["foreground"]

2920

zeroconf = server_settings["zeroconf"]

2422

2921

2423

2922

if debug:

2424

2923

initlogger(debug, logging.DEBUG)

2430

2929

initlogger(debug, level)

2431

2930

2432

2931

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

2433

syslogger.setFormatter(logging.Formatter

2434

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

2435

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

2436

.format(server_settings

2437

["servicename"])))

2932

syslogger.setFormatter(

2933

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

2934

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

2935

server_settings["servicename"])))

2438

2936

2439

2937

# Parse config file with clients

2440

2938

client_config = configparser.SafeConfigParser(Client

2445

2943

global mandos_dbus_service

2446

2944

mandos_dbus_service = None

2447

2945

2448

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

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2946

socketfd = None

2947

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

2948

socketfd = server_settings["socket"]

2949

tcp_server = MandosServer(

2950

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

2951

ClientHandler,

2952

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

2953

use_ipv6=use_ipv6,

2954

gnutls_priority=server_settings["priority"],

2955

use_dbus=use_dbus,

2956

socketfd=socketfd)

2459

2957

if not foreground:

2460

2958

pidfilename = "/run/mandos.pid"

2461

2959

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

2462

2960

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

2463

2961

pidfile = None

2464

2962

try:

2465

pidfile = open(pidfilename, "w")

2963

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

2466

2964

except IOError as e:

2467

2965

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

2468

2966

exc_info=e)

2469

2967

2470

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

2968

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

2969

("mandos", "mandos"),

2970

("nobody", "nogroup")):

2471

2971

try:

2472

2972

uid = pwd.getpwnam(name).pw_uid

2473

gid = pwd.getpwnam(name).pw_gid

2973

gid = pwd.getpwnam(group).pw_gid

2474

2974

break

2475

2975

except KeyError:

2476

2976

continue

2480

2980

try:

2481

2981

os.setgid(gid)

2482

2982

os.setuid(uid)

2983

if debug:

2984

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

2985

gid))

2483

2986

except OSError as error:

2987

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

2988

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

2484

2989

if error.errno != errno.EPERM:

2485

2990

raise

2486

2991

2489

2994

2490

2995

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

2491

2996

# - GnuTLS manual

2492

gnutls.library.functions.gnutls_global_set_log_level(11)

2997

gnutls.global_set_log_level(11)

2493

2998

2494

@gnutls.library.types.gnutls_log_func

2999

@gnutls.log_func

2495

3000

def debug_gnutls(level, string):

2496

3001

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

2497

3002

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

3003

gnutls.global_set_log_function(debug_gnutls)

2500

3004

2501

3005

# Redirect stdin so all checkers get /dev/null

2502

3006

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

2509

3013

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

2510

3014

daemon()

2511

3015

2512

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

2513

# need to inform gobject that threads will be used.

2514

gobject.threads_init()

3016

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

3017

# to inform GLib that threads will be used.

3018

GLib.threads_init()

2515

3019

2516

3020

global main_loop

2517

3021

# From the Avahi example code

2518

3022

DBusGMainLoop(set_as_default=True)

2519

main_loop = gobject.MainLoop()

3023

main_loop = GLib.MainLoop()

2520

3024

bus = dbus.SystemBus()

2521

3025

# End of Avahi example code

2522

3026

if use_dbus:

2523

3027

try:

2524

3028

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

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2529

except dbus.exceptions.NameExistsException as e:

3029

bus,

3030

do_not_queue=True)

3031

old_bus_name = dbus.service.BusName(

3032

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

3033

do_not_queue=True)

3034

except dbus.exceptions.DBusException as e:

2530

3035

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

2531

3036

use_dbus = False

2532

3037

server_settings["use_dbus"] = False

2533

3038

tcp_server.use_dbus = False

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

3039

if zeroconf:

3040

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3041

service = AvahiServiceToSyslog(

3042

name = server_settings["servicename"],

3043

servicetype = "_mandos._tcp",

3044

protocol = protocol,

3045

bus = bus)

3046

if server_settings["interface"]:

3047

service.interface = if_nametoindex(

3048

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

2542

3049

2543

3050

global multiprocessing_manager

2544

3051

multiprocessing_manager = multiprocessing.Manager()

2563

3070

if server_settings["restore"]:

2564

3071

try:

2565

3072

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

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

3073

if sys.version_info.major == 2:

3074

clients_data, old_client_settings = pickle.load(

3075

stored_state)

3076

else:

3077

bytes_clients_data, bytes_old_client_settings = (

3078

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

3079

### Fix bytes to strings

3080

## clients_data

3081

# .keys()

3082

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

3083

if isinstance(key, bytes)

3084

else key): value

3085

for key, value in

3086

bytes_clients_data.items() }

3087

del bytes_clients_data

3088

for key in clients_data:

3089

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

3090

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

3091

for k, v in

3092

clients_data[key].items() }

3093

clients_data[key] = value

3094

# .client_structure

3095

value["client_structure"] = [

3096

(s.decode("utf-8")

3097

if isinstance(s, bytes)

3098

else s) for s in

3099

value["client_structure"] ]

3100

# .name & .host

3101

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

3102

if isinstance(value[k], bytes):

3103

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

3104

## old_client_settings

3105

# .keys()

3106

old_client_settings = {

3107

(key.decode("utf-8")

3108

if isinstance(key, bytes)

3109

else key): value

3110

for key, value in

3111

bytes_old_client_settings.items() }

3112

del bytes_old_client_settings

3113

# .host

3114

for value in old_client_settings.values():

3115

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

3116

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

3117

.decode("utf-8"))

2568

3118

os.remove(stored_state_path)

2569

3119

except IOError as e:

2570

3120

if e.errno == errno.ENOENT:

2571

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

2572

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

3121

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

3122

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

2573

3123

else:

2574

3124

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

2575

3125

exc_info=e)

2576

3126

raise

2577

3127

except EOFError as e:

2578

3128

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

2579

"EOFError:", exc_info=e)

3129

"EOFError:",

3130

exc_info=e)

2580

3131

2581

3132

with PGPEngine() as pgp:

2582

for client_name, client in clients_data.iteritems():

3133

for client_name, client in clients_data.items():

2583

3134

# Skip removed clients

2584

3135

if client_name not in client_settings:

2585

3136

continue

2594

3145

# For each value in new config, check if it

2595

3146

# differs from the old config value (Except for

2596

3147

# the "secret" attribute)

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

3148

if (name != "secret"

3149

and (value !=

3150

old_client_settings[client_name][name])):

2600

3151

client[name] = value

2601

3152

except KeyError:

2602

3153

pass

2603

3154

2604

3155

# Clients who has passed its expire date can still be

2605

# enabled if its last checker was successful. Clients

3156

# enabled if its last checker was successful. A Client

2606

3157

# whose checker succeeded before we stored its state is

2607

3158

# assumed to have successfully run all checkers during

2608

3159

# downtime.

2610

3161

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

2611

3162

if not client["last_checked_ok"]:

2612

3163

logger.warning(

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

3164

"disabling client {} - Client never "

3165

"performed a successful checker".format(

3166

client_name))

2616

3167

client["enabled"] = False

2617

3168

elif client["last_checker_status"] != 0:

2618

3169

logger.warning(

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

3170

"disabling client {} - Client last"

3171

" checker failed with error code"

3172

" {}".format(

3173

client_name,

3174

client["last_checker_status"]))

2623

3175

client["enabled"] = False

2624

3176

else:

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

3177

client["expires"] = (

3178

datetime.datetime.utcnow()

3179

+ client["timeout"])

2628

3180

logger.debug("Last checker succeeded,"

2629

" keeping {0} enabled"

2630

.format(client_name))

3181

" keeping {} enabled".format(

3182

client_name))

2631

3183

try:

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

3184

client["secret"] = pgp.decrypt(

3185

client["encrypted_secret"],

3186

client_settings[client_name]["secret"])

2636

3187

except PGPError:

2637

3188

# If decryption fails, we use secret from new settings

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

3189

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

3190

client_name))

3191

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

3192

["secret"])

2642

3193

2643

3194

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

2644

3195

for client_name in (set(old_client_settings)

2649

3200

clients_data[client_name] = client_settings[client_name]

2650

3201

2651

3202

# Create all client objects

2652

for client_name, client in clients_data.iteritems():

3203

for client_name, client in clients_data.items():

2653

3204

tcp_server.clients[client_name] = client_class(

2654

name = client_name, settings = client,

3205

name = client_name,

3206

settings = client,

2655

3207

server_settings = server_settings)

2656

3208

2657

3209

if not tcp_server.clients:

2659

3211

2660

3212

if not foreground:

2661

3213

if pidfile is not None:

3214

pid = os.getpid()

2662

3215

try:

2663

3216

with pidfile:

2664

pid = os.getpid()

2665

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

3217

print(pid, file=pidfile)

2666

3218

except IOError:

2667

3219

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

2668

3220

pidfilename, pid)

2669

3221

del pidfile

2670

3222

del pidfilename

2671

3223

2672

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

2673

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

3224

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

3225

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3226

lambda: main_loop.quit() and False)

2674

3227

2675

3228

if use_dbus:

2676

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

2677

"se.bsnet.fukt.Mandos"})

2678

class MandosDBusService(DBusObjectWithProperties):

3229

3230

@alternate_dbus_interfaces(

3231

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

3232

class MandosDBusService(DBusObjectWithObjectManager):

2679

3233

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

3234

2680

3235

def __init__(self):

2681

3236

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

3237

2682

3238

_interface = "se.recompile.Mandos"

2683

3239

2684

@dbus_interface_annotations(_interface)

2685

def _foo(self):

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2689

2690

3240

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

2691

3241

def ClientAdded(self, objpath):

2692

3242

"D-Bus signal"

2697

3247

"D-Bus signal"

2698

3248

pass

2699

3249

3250

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

3251

"true"})

2700

3252

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

2701

3253

def ClientRemoved(self, objpath, name):

2702

3254

"D-Bus signal"

2703

3255

pass

2704

3256

3257

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

3258

"true"})

2705

3259

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

2706

3260

def GetAllClients(self):

2707

3261

"D-Bus method"

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2710

tcp_server.clients.itervalues())

3262

return dbus.Array(c.dbus_object_path for c in

3263

tcp_server.clients.values())

2711

3264

3265

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

3266

"true"})

2712

3267

@dbus.service.method(_interface,

2713

3268

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

2714

3269

def GetAllClientsWithProperties(self):

2715

3270

"D-Bus method"

2716

3271

return dbus.Dictionary(

2717

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

2718

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

3272

{ c.dbus_object_path: c.GetAll(

3273

"se.recompile.Mandos.Client")

3274

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

2719

3275

signature="oa{sv}")

2720

3276

2721

3277

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

2722

3278

def RemoveClient(self, object_path):

2723

3279

"D-Bus method"

2724

for c in tcp_server.clients.itervalues():

3280

for c in tcp_server.clients.values():

2725

3281

if c.dbus_object_path == object_path:

2726

3282

del tcp_server.clients[c.name]

2727

3283

c.remove_from_connection()

2728

# Don't signal anything except ClientRemoved

3284

# Don't signal the disabling

2729

3285

c.disable(quiet=True)

2730

# Emit D-Bus signal

2731

self.ClientRemoved(object_path, c.name)

3286

# Emit D-Bus signal for removal

3287

self.client_removed_signal(c)

2732

3288

return

2733

3289

raise KeyError(object_path)

2734

3290

2735

3291

del _interface

3292

3293

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3294

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

3295

def GetManagedObjects(self):

3296

"""D-Bus method"""

3297

return dbus.Dictionary(

3298

{ client.dbus_object_path:

3299

dbus.Dictionary(

3300

{ interface: client.GetAll(interface)

3301

for interface in

3302

client._get_all_interface_names()})

3303

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

3304

3305

def client_added_signal(self, client):

3306

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

3307

if use_dbus:

3308

# New standard signal

3309

self.InterfacesAdded(

3310

client.dbus_object_path,

3311

dbus.Dictionary(

3312

{ interface: client.GetAll(interface)

3313

for interface in

3314

client._get_all_interface_names()}))

3315

# Old signal

3316

self.ClientAdded(client.dbus_object_path)

3317

3318

def client_removed_signal(self, client):

3319

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

3320

if use_dbus:

3321

# New standard signal

3322

self.InterfacesRemoved(

3323

client.dbus_object_path,

3324

client._get_all_interface_names())

3325

# Old signal

3326

self.ClientRemoved(client.dbus_object_path,

3327

client.name)

2736

3328

2737

3329

mandos_dbus_service = MandosDBusService()

2738

3330

3331

# Save modules to variables to exempt the modules from being

3332

# unloaded before the function registered with atexit() is run.

3333

mp = multiprocessing

3334

wn = wnull

2739

3335

def cleanup():

2740

3336

"Cleanup function; run on exit"

2741

service.cleanup()

3337

if zeroconf:

3338

service.cleanup()

2742

3339

2743

multiprocessing.active_children()

2744

wnull.close()

3340

mp.active_children()

3341

wn.close()

2745

3342

if not (tcp_server.clients or client_settings):

2746

3343

return

2747

3344

2750

3347

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

2751

3348

clients = {}

2752

3349

with PGPEngine() as pgp:

2753

for client in tcp_server.clients.itervalues():

3350

for client in tcp_server.clients.values():

2754

3351

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

2755

3352

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

2756

3353

key)

2758

3355

2759

3356

# A list of attributes that can not be pickled

2760

3357

# + secret.

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

3358

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

3359

"checker", "server_settings" }

3360

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

3361

.Object):

2765

3362

exclude.add(name)

2766

3363

2767

3364

client_dict["encrypted_secret"] = (client

2774

3371

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

2775

3372

2776

3373

try:

2777

with (tempfile.NamedTemporaryFile

2778

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

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

2781

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

2782

tempname=stored_state.name

3374

with tempfile.NamedTemporaryFile(

3375

mode='wb',

3376

suffix=".pickle",

3377

prefix='clients-',

3378

dir=os.path.dirname(stored_state_path),

3379

delete=False) as stored_state:

3380

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

3381

protocol = 2)

3382

tempname = stored_state.name

2783

3383

os.rename(tempname, stored_state_path)

2784

3384

except (IOError, OSError) as e:

2785

3385

if not debug:

2788

3388

except NameError:

2789

3389

pass

2790

3390

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

2791

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

3391

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

2792

3392

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

2793

3393

else:

2794

3394

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

2800

3400

name, client = tcp_server.clients.popitem()

2801

3401

if use_dbus:

2802

3402

client.remove_from_connection()

2803

# Don't signal anything except ClientRemoved

3403

# Don't signal the disabling

2804

3404

client.disable(quiet=True)

3405

# Emit D-Bus signal for removal

2805

3406

if use_dbus:

2806

# Emit D-Bus signal

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

3407

mandos_dbus_service.client_removed_signal(client)

2810

3408

client_settings.clear()

2811

3409

2812

3410

atexit.register(cleanup)

2813

3411

2814

for client in tcp_server.clients.itervalues():

3412

for client in tcp_server.clients.values():

2815

3413

if use_dbus:

2816

# Emit D-Bus signal

2817

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3414

# Emit D-Bus signal for adding

3415

mandos_dbus_service.client_added_signal(client)

2818

3416

# Need to initiate checking of clients

2819

3417

if client.enabled:

2820

3418

client.init_checker()

2823

3421

tcp_server.server_activate()

2824

3422

2825

3423

# Find out what port we got

2826

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

3424

if zeroconf:

3425

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

2827

3426

if use_ipv6:

2828

3427

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

2829

3428

" flowinfo %d, scope_id %d",

2835

3434

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

2836

3435

2837

3436

try:

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

3437

if zeroconf:

3438

# From the Avahi example code

3439

try:

3440

service.activate()

3441

except dbus.exceptions.DBusException as error:

3442

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

3443

cleanup()

3444

sys.exit(1)

3445

# End of Avahi example code

2846

3446

2847

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

2848

lambda *args, **kwargs:

2849

(tcp_server.handle_request

2850

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

3447

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

3448

lambda *args, **kwargs:

3449

(tcp_server.handle_request

3450

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

2851

3451

2852

3452

logger.debug("Starting main loop")

2853

3453

main_loop.run()

2863

3463

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

2864

3464

cleanup()

2865

3465

3466

2866

3467

if __name__ == '__main__':

2867

3468

main()