/mandos/release : revision 237.7.392

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

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

18

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

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

from future_builtins import *

37

try:

38

from future_builtins import *

39

except ImportError:

40

pass

38

41

39

import SocketServer as socketserver

42

try:

43

import SocketServer as socketserver

44

except ImportError:

45

import socketserver

40

46

import socket

41

47

import argparse

42

48

import datetime

43

49

import errno

44

import gnutls.crypto

45

import gnutls.connection

46

import gnutls.errors

47

import gnutls.library.functions

48

import gnutls.library.constants

49

import gnutls.library.types

50

import ConfigParser as configparser

50

try:

51

import ConfigParser as configparser

52

except ImportError:

53

import configparser

51

54

import sys

52

55

import re

53

56

import os

62

65

import struct

63

66

import fcntl

64

67

import functools

65

import cPickle as pickle

68

try:

69

import cPickle as pickle

70

except ImportError:

71

import pickle

66

72

import multiprocessing

67

73

import types

68

74

import binascii

69

75

import tempfile

70

76

import itertools

71

77

import collections

78

import codecs

72

79

73

80

import dbus

74

81

import dbus.service

75

import gobject

76

import avahi

82

from gi.repository import GLib

77

83

from dbus.mainloop.glib import DBusGMainLoop

78

84

import ctypes

79

85

import ctypes.util

80

86

import xml.dom.minidom

81

87

import inspect

82

import GnuPGInterface

83

88

84

89

try:

85

90

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

89

94

except ImportError:

90

95

SO_BINDTODEVICE = None

91

96

92

version = "1.6.0"

97

if sys.version_info.major == 2:

98

str = unicode

99

100

version = "1.7.7"

93

101

stored_state_file = "clients.pickle"

94

102

95

103

logger = logging.getLogger()

96

syslogger = (logging.handlers.SysLogHandler

97

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

98

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

104

syslogger = None

99

105

100

106

try:

101

if_nametoindex = (ctypes.cdll.LoadLibrary

102

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

103

.if_nametoindex)

107

if_nametoindex = ctypes.cdll.LoadLibrary(

108

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

104

109

except (OSError, AttributeError):

110

105

111

def if_nametoindex(interface):

106

112

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

107

113

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

108

114

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

109

115

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

110

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

111

interface))

112

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

113

ifreq[16:20])[0]

116

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

117

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

114

118

return interface_index

115

119

116

120

121

def copy_function(func):

122

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

123

if sys.version_info.major == 2:

124

return types.FunctionType(func.func_code,

125

func.func_globals,

126

func.func_name,

127

func.func_defaults,

128

func.func_closure)

129

else:

130

return types.FunctionType(func.__code__,

131

func.__globals__,

132

func.__name__,

133

func.__defaults__,

134

func.__closure__)

135

136

117

137

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

118

138

"""init logger and add loglevel"""

119

139

140

global syslogger

141

syslogger = (logging.handlers.SysLogHandler(

142

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

143

address = "/dev/log"))

120

144

syslogger.setFormatter(logging.Formatter

121

145

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

122

146

' %(message)s'))

139

163

140

164

class PGPEngine(object):

141

165

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

166

142

167

def __init__(self):

143

self.gnupg = GnuPGInterface.GnuPG()

144

168

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

145

self.gnupg = GnuPGInterface.GnuPG()

146

self.gnupg.options.meta_interactive = False

147

self.gnupg.options.homedir = self.tempdir

148

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

149

'--quiet',

150

'--no-use-agent'])

169

self.gpg = "gpg"

170

try:

171

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

172

for line in output.splitlines():

173

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

174

if name == "gpg":

175

self.gpg = path

176

break

177

except OSError as e:

178

if e.errno != errno.ENOENT:

179

raise

180

self.gnupgargs = ['--batch',

181

'--homedir', self.tempdir,

182

'--force-mdc',

183

'--quiet',

184

'--no-use-agent']

151

185

152

186

def __enter__(self):

153

187

return self

175

209

def password_encode(self, password):

176

210

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

177

211

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

178

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

212

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

213

if len(encoded) > 2048:

214

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

215

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

216

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

217

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

218

return encoded

179

219

180

220

def encrypt(self, data, password):

181

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

182

with open(os.devnull, "w") as devnull:

183

try:

184

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

185

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

186

attach_fhs={'stderr': devnull})

187

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

188

f.write(data)

189

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

190

ciphertext = f.read()

191

proc.wait()

192

except IOError as e:

193

raise PGPError(e)

194

self.gnupg.passphrase = None

221

passphrase = self.password_encode(password)

222

with tempfile.NamedTemporaryFile(

223

dir=self.tempdir) as passfile:

224

passfile.write(passphrase)

225

passfile.flush()

226

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

227

'--passphrase-file',

228

passfile.name]

229

+ self.gnupgargs,

230

stdin = subprocess.PIPE,

231

stdout = subprocess.PIPE,

232

stderr = subprocess.PIPE)

233

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

234

if proc.returncode != 0:

235

raise PGPError(err)

195

236

return ciphertext

196

237

197

238

def decrypt(self, data, password):

198

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

199

with open(os.devnull, "w") as devnull:

200

try:

201

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

202

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

203

attach_fhs={'stderr': devnull})

204

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

205

f.write(data)

206

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

207

decrypted_plaintext = f.read()

208

proc.wait()

209

except IOError as e:

210

raise PGPError(e)

211

self.gnupg.passphrase = None

239

passphrase = self.password_encode(password)

240

with tempfile.NamedTemporaryFile(

241

dir = self.tempdir) as passfile:

242

passfile.write(passphrase)

243

passfile.flush()

244

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

245

'--passphrase-file',

246

passfile.name]

247

+ self.gnupgargs,

248

stdin = subprocess.PIPE,

249

stdout = subprocess.PIPE,

250

stderr = subprocess.PIPE)

251

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

252

if proc.returncode != 0:

253

raise PGPError(err)

212

254

return decrypted_plaintext

213

255

256

# Pretend that we have an Avahi module

257

class Avahi(object):

258

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

259

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

260

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

261

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

262

PROTO_INET = 0 # avahi-common/address.h

263

PROTO_INET6 = 1 # avahi-common/address.h

264

DBUS_NAME = "org.freedesktop.Avahi"

265

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

266

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

267

DBUS_PATH_SERVER = "/"

268

def string_array_to_txt_array(self, t):

269

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

270

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

271

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

272

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

273

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

274

SERVER_INVALID = 0 # avahi-common/defs.h

275

SERVER_REGISTERING = 1 # avahi-common/defs.h

276

SERVER_RUNNING = 2 # avahi-common/defs.h

277

SERVER_COLLISION = 3 # avahi-common/defs.h

278

SERVER_FAILURE = 4 # avahi-common/defs.h

279

avahi = Avahi()

214

280

215

281

class AvahiError(Exception):

216

282

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

217

283

self.value = value

218

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

219

def __unicode__(self):

220

return unicode(repr(self.value))

284

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

285

**kwargs)

286

221

287

222

288

class AvahiServiceError(AvahiError):

223

289

pass

224

290

291

225

292

class AvahiGroupError(AvahiError):

226

293

pass

227

294

234

301

Used to optionally bind to the specified interface.

235

302

name: string; Example: 'Mandos'

236

303

type: string; Example: '_mandos._tcp'.

237

See <http://www.dns-sd.org/ServiceTypes.html>

304

See <https://www.iana.org/assignments/service-names-port-numbers>

238

305

port: integer; what port to announce

239

306

TXT: list of strings; TXT record for the service

240

307

domain: string; Domain to publish on, default to .local if empty.

247

314

bus: dbus.SystemBus()

248

315

"""

249

316

250

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

251

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

252

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

253

protocol = avahi.PROTO_UNSPEC, bus = None):

317

def __init__(self,

318

interface = avahi.IF_UNSPEC,

319

name = None,

320

servicetype = None,

321

port = None,

322

TXT = None,

323

domain = "",

324

host = "",

325

max_renames = 32768,

326

protocol = avahi.PROTO_UNSPEC,

327

bus = None):

254

328

self.interface = interface

255

329

self.name = name

256

330

self.type = servicetype

266

340

self.bus = bus

267

341

self.entry_group_state_changed_match = None

268

342

269

def rename(self):

343

def rename(self, remove=True):

270

344

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

271

345

if self.rename_count >= self.max_renames:

272

346

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

273

347

" after %i retries, exiting.",

274

348

self.rename_count)

275

349

raise AvahiServiceError("Too many renames")

276

self.name = unicode(self.server

277

.GetAlternativeServiceName(self.name))

350

self.name = str(

351

self.server.GetAlternativeServiceName(self.name))

352

self.rename_count += 1

278

353

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

279

354

self.name)

280

self.remove()

355

if remove:

356

self.remove()

281

357

try:

282

358

self.add()

283

359

except dbus.exceptions.DBusException as error:

284

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

285

self.cleanup()

286

os._exit(1)

287

self.rename_count += 1

360

if (error.get_dbus_name()

361

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

362

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

363

return self.rename(remove=False)

364

else:

365

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

366

self.cleanup()

367

os._exit(1)

288

368

289

369

def remove(self):

290

370

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

328

408

self.rename()

329

409

elif state == avahi.ENTRY_GROUP_FAILURE:

330

410

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

331

unicode(error))

332

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

333

.format(error))

411

str(error))

412

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

334

413

335

414

def cleanup(self):

336

415

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

346

425

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

347

426

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

348

427

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

349

bad_states = { avahi.SERVER_INVALID:

350

"Zeroconf server invalid",

351

avahi.SERVER_REGISTERING: None,

352

avahi.SERVER_COLLISION:

353

"Zeroconf server name collision",

354

avahi.SERVER_FAILURE:

355

"Zeroconf server failure" }

428

bad_states = {

429

avahi.SERVER_INVALID: "Zeroconf server invalid",

430

avahi.SERVER_REGISTERING: None,

431

avahi.SERVER_COLLISION: "Zeroconf server name collision",

432

avahi.SERVER_FAILURE: "Zeroconf server failure",

433

}

356

434

if state in bad_states:

357

435

if bad_states[state] is not None:

358

436

if error is None:

361

439

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

362

440

self.cleanup()

363

441

elif state == avahi.SERVER_RUNNING:

364

self.add()

442

try:

443

self.add()

444

except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

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

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

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

452

self.cleanup()

453

os._exit(1)

365

454

else:

366

455

if error is None:

367

456

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

377

466

follow_name_owner_changes=True),

378

467

avahi.DBUS_INTERFACE_SERVER)

379

468

self.server.connect_to_signal("StateChanged",

380

self.server_state_changed)

469

self.server_state_changed)

381

470

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

382

471

383

472

384

473

class AvahiServiceToSyslog(AvahiService):

385

def rename(self):

474

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

386

475

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

387

ret = AvahiService.rename(self)

388

syslogger.setFormatter(logging.Formatter

389

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

390

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

391

.format(self.name)))

476

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

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

392

480

return ret

393

481

394

395

def timedelta_to_milliseconds(td):

396

"Convert a datetime.timedelta() to milliseconds"

397

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

398

+ (td.seconds * 1000)

399

+ (td.microseconds // 1000))

400

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

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

485

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

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

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

492

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

493

# happens.

494

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

495

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

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

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

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

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

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

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

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

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

536

# exception might be raised from within GnuTLS.__init__,

537

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

538

# global variable has happened.

539

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

540

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

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

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

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

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

565

self._c_object = gnutls.session_t()

566

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

567

gnutls.set_default_priority(self._c_object)

568

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

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

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

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

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

595

596

# Error handling functions

597

def _error_code(result):

598

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

599

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

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

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

608

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

609

while result < 0:

610

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

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

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

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

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

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

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

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

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

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

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

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

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

740

741

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

742

return value on the provided multiprocessing.Connection.

743

"""

744

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

745

connection.close()

401

746

402

747

class Client(object):

403

748

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

409

754

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

410

755

to see if the client lives.

411

756

'None' if no process is running.

412

checker_callback_tag: a gobject event source tag, or None

757

checker_callback_tag: a GLib event source tag, or None

413

758

checker_command: string; External command which is run to check

414

759

if client lives. %() expansions are done at

415

760

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

416

761

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

417

checker_initiator_tag: a gobject event source tag, or None

762

checker_initiator_tag: a GLib event source tag, or None

418

763

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

419

764

client_structure: Object describing what attributes a client has

420

765

and is used for storing the client at exit

421

766

current_checker_command: string; current running checker_command

422

disable_initiator_tag: a gobject event source tag, or None

767

disable_initiator_tag: a GLib event source tag, or None

423

768

enabled: bool()

424

769

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

425

770

uniquely identify the client

430

775

last_checker_status: integer between 0 and 255 reflecting exit

431

776

status of last checker. -1 reflects crashed

432

777

checker, -2 means no checker completed yet.

778

last_checker_signal: The signal which killed the last checker, if

779

last_checker_status is -1

433

780

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

434

781

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

435

782

D-Bus identifiers

440

787

runtime_expansions: Allowed attributes for runtime expansion.

441

788

expires: datetime.datetime(); time (UTC) when a client will be

442

789

disabled, or None

790

server_settings: The server_settings dict from main()

443

791

"""

444

792

445

793

runtime_expansions = ("approval_delay", "approval_duration",

447

795

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

448

796

"last_approval_request", "last_checked_ok",

449

797

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

450

client_defaults = { "timeout": "PT5M",

451

"extended_timeout": "PT15M",

452

"interval": "PT2M",

453

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

454

"host": "",

455

"approval_delay": "PT0S",

456

"approval_duration": "PT1S",

457

"approved_by_default": "True",

458

"enabled": "True",

459

}

460

461

def timeout_milliseconds(self):

462

"Return the 'timeout' attribute in milliseconds"

463

return timedelta_to_milliseconds(self.timeout)

464

465

def extended_timeout_milliseconds(self):

466

"Return the 'extended_timeout' attribute in milliseconds"

467

return timedelta_to_milliseconds(self.extended_timeout)

468

469

def interval_milliseconds(self):

470

"Return the 'interval' attribute in milliseconds"

471

return timedelta_to_milliseconds(self.interval)

472

473

def approval_delay_milliseconds(self):

474

return timedelta_to_milliseconds(self.approval_delay)

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

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

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

475

809

476

810

@staticmethod

477

811

def config_parser(config):

493

827

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

494

828

"enabled")

495

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

496

833

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

497

834

.replace(" ", ""))

498

835

if "secret" in section:

499

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

836

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

837

.encode("utf-8"),

838

"base64")

500

839

elif "secfile" in section:

501

840

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

502

841

(section["secfile"])),

503

842

"rb") as secfile:

504

843

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

505

844

else:

506

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

845

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

507

846

.format(section))

508

847

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

509

848

client["extended_timeout"] = string_to_delta(

520

859

521

860

return settings

522

861

523

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

862

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

524

863

self.name = name

864

if server_settings is None:

865

server_settings = {}

866

self.server_settings = server_settings

525

867

# adding all client settings

526

for setting, value in settings.iteritems():

868

for setting, value in settings.items():

527

869

setattr(self, setting, value)

528

870

529

871

if self.enabled:

537

879

self.expires = None

538

880

539

881

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

540

# Uppercase and remove spaces from fingerprint for later

541

# comparison purposes with return value from the fingerprint()

542

# function

543

882

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

544

883

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

545

884

datetime.datetime.utcnow())

552

891

self.current_checker_command = None

553

892

self.approved = None

554

893

self.approvals_pending = 0

555

self.changedstate = (multiprocessing_manager

556

.Condition(multiprocessing_manager

557

.Lock()))

558

self.client_structure = [attr for attr in

559

self.__dict__.iterkeys()

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

560

898

if not attr.startswith("_")]

561

899

self.client_structure.append("client_structure")

562

900

563

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

564

lambda obj:

565

isinstance(obj,

566

property)):

901

for name, t in inspect.getmembers(

902

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

567

903

if not name.startswith("_"):

568

904

self.client_structure.append(name)

569

905

590

926

if not quiet:

591

927

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

592

928

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

593

gobject.source_remove(self.disable_initiator_tag)

929

GLib.source_remove(self.disable_initiator_tag)

594

930

self.disable_initiator_tag = None

595

931

self.expires = None

596

932

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

597

gobject.source_remove(self.checker_initiator_tag)

933

GLib.source_remove(self.checker_initiator_tag)

598

934

self.checker_initiator_tag = None

599

935

self.stop_checker()

600

936

self.enabled = False

601

937

if not quiet:

602

938

self.send_changedstate()

603

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

939

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

604

940

return False

605

941

606

942

def __del__(self):

610

946

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

611

947

# and every interval from then on.

612

948

if self.checker_initiator_tag is not None:

613

gobject.source_remove(self.checker_initiator_tag)

614

self.checker_initiator_tag = (gobject.timeout_add

615

(self.interval_milliseconds(),

616

self.start_checker))

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

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

952

self.start_checker)

617

953

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

618

954

if self.disable_initiator_tag is not None:

619

gobject.source_remove(self.disable_initiator_tag)

620

self.disable_initiator_tag = (gobject.timeout_add

621

(self.timeout_milliseconds(),

622

self.disable))

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

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

623

958

# Also start a new checker *right now*.

624

959

self.start_checker()

625

960

626

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

961

def checker_callback(self, source, condition, connection,

962

command):

627

963

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

628

964

self.checker_callback_tag = None

629

965

self.checker = None

630

if os.WIFEXITED(condition):

631

self.last_checker_status = os.WEXITSTATUS(condition)

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

632

973

if self.last_checker_status == 0:

633

974

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

634

975

vars(self))

635

976

self.checked_ok()

636

977

else:

637

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

638

vars(self))

978

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

639

979

else:

640

980

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

641

982

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

642

983

vars(self))

984

return False

643

985

644

986

def checked_ok(self):

645

987

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

646

988

self.last_checked_ok = datetime.datetime.utcnow()

647

989

self.last_checker_status = 0

990

self.last_checker_signal = None

648

991

self.bump_timeout()

649

992

650

993

def bump_timeout(self, timeout=None):

652

995

if timeout is None:

653

996

timeout = self.timeout

654

997

if self.disable_initiator_tag is not None:

655

gobject.source_remove(self.disable_initiator_tag)

998

GLib.source_remove(self.disable_initiator_tag)

656

999

self.disable_initiator_tag = None

657

1000

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

658

self.disable_initiator_tag = (gobject.timeout_add

659

(timedelta_to_milliseconds

660

(timeout), self.disable))

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

661

1003

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

662

1004

663

1005

def need_approval(self):

677

1019

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

678

1020

# should be.

679

1021

680

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

681

try:

682

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

683

except (AttributeError, OSError) as error:

684

if (isinstance(error, OSError)

685

and error.errno != errno.ECHILD):

686

raise error

687

else:

688

if pid:

689

logger.warning("Checker was a zombie")

690

gobject.source_remove(self.checker_callback_tag)

691

self.checker_callback(pid, status,

692

self.current_checker_command)

1022

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

1023

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

1024

self.checker.join()

1025

self.checker = None

693

1026

# Start a new checker if needed

694

1027

if self.checker is None:

695

1028

# Escape attributes for the shell

696

escaped_attrs = dict(

697

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

698

for attr in

699

self.runtime_expansions)

1029

escaped_attrs = {

1030

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

1031

for attr in self.runtime_expansions }

700

1032

try:

701

1033

command = self.checker_command % escaped_attrs

702

1034

except TypeError as error:

703

1035

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

704

self.checker_command, exc_info=error)

705

return True # Try again later

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

706

1039

self.current_checker_command = command

707

try:

708

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

709

command, self.name)

710

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

711

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

712

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

713

# always replaced by /dev/null.)

714

self.checker = subprocess.Popen(command,

715

close_fds=True,

716

shell=True, cwd="/")

717

except OSError as error:

718

logger.error("Failed to start subprocess",

719

exc_info=error)

720

self.checker_callback_tag = (gobject.child_watch_add

721

(self.checker.pid,

722

self.checker_callback,

723

data=command))

724

# The checker may have completed before the gobject

725

# watch was added. Check for this.

726

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

727

if pid:

728

gobject.source_remove(self.checker_callback_tag)

729

self.checker_callback(pid, status, command)

730

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

1040

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

1041

self.name)

1042

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

1043

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

1044

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

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

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

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

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

1064

self.checker_callback, pipe[0], command)

1065

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

731

1066

return True

732

1067

733

1068

def stop_checker(self):

734

1069

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

735

1070

if self.checker_callback_tag:

736

gobject.source_remove(self.checker_callback_tag)

1071

GLib.source_remove(self.checker_callback_tag)

737

1072

self.checker_callback_tag = None

738

1073

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

739

1074

return

740

1075

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

741

try:

742

self.checker.terminate()

743

#time.sleep(0.5)

744

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

745

# self.checker.kill()

746

except OSError as error:

747

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

748

raise

1076

self.checker.terminate()

749

1077

self.checker = None

750

1078

751

1079

752

def dbus_service_property(dbus_interface, signature="v",

753

access="readwrite", byte_arrays=False):

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

754

1084

"""Decorators for marking methods of a DBusObjectWithProperties to

755

1085

become properties on the D-Bus.

756

1086

765

1095

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

766

1096

if byte_arrays and signature != "ay":

767

1097

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

768

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

1098

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

1099

769

1100

def decorator(func):

770

1101

func._dbus_is_property = True

771

1102

func._dbus_interface = dbus_interface

776

1107

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

777

1108

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

778

1109

return func

1110

779

1111

return decorator

780

1112

781

1113

790

1122

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

791

1123

"false"}

792

1124

"""

1125

793

1126

def decorator(func):

794

1127

func._dbus_is_interface = True

795

1128

func._dbus_interface = dbus_interface

796

1129

func._dbus_name = dbus_interface

797

1130

return func

1131

798

1132

return decorator

799

1133

800

1134

802

1136

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

803

1137

Usage:

804

1138

1139

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

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

805

1142

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

806

1143

access="r")

807

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

808

"org.freedesktop.DBus.Property."

809

"EmitsChangedSignal": "false"})

810

1144

def Property_dbus_property(self):

811

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

812

1148

"""

1149

813

1150

def decorator(func):

814

1151

func._dbus_annotations = annotations

815

1152

return func

1153

816

1154

return decorator

817

1155

818

1156

819

1157

class DBusPropertyException(dbus.exceptions.DBusException):

820

1158

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

821

1159

"""

822

def __unicode__(self):

823

return unicode(str(self))

1160

pass

824

1161

825

1162

826

1163

class DBusPropertyAccessException(DBusPropertyException):

835

1172

pass

836

1173

837

1174

838

class DBusObjectWithProperties(dbus.service.Object):

839

"""A D-Bus object with properties.

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

840

1177

841

Classes inheriting from this can use the dbus_service_property

842

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

843

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

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

844

1180

"""

845

1181

846

1182

@staticmethod

850

1186

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

851

1187

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

852

1188

"""

853

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

1189

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

854

1190

False)

855

1191

856

1192

def _get_all_dbus_things(self, thing):

857

1193

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

858

1194

"""

859

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

860

name),

1195

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

861

1196

athing.__get__(self))

862

1197

for cls in self.__class__.__mro__

863

1198

for name, athing in

864

inspect.getmembers(cls,

865

self._is_dbus_thing(thing)))

1199

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

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

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

1211

connection)

1212

try:

1213

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

1214

1215

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

1216

# Add annotation tags

1217

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

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

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

1249

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

1250

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

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

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

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

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

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1265

"""A D-Bus object with properties.

1266

1267

Classes inheriting from this can use the dbus_service_property

1268

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

1269

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

1270

"""

866

1271

867

1272

def _get_dbus_property(self, interface_name, property_name):

868

1273

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

869

1274

property with the specified name and interface.

870

1275

"""

871

for cls in self.__class__.__mro__:

872

for name, value in (inspect.getmembers

873

(cls,

874

self._is_dbus_thing("property"))):

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

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

875

1279

if (value._dbus_name == property_name

876

1280

and value._dbus_interface == interface_name):

877

1281

return value.__get__(self)

878

1282

879

1283

# No such property

880

raise DBusPropertyNotFound(self.dbus_object_path + ":"

881

+ interface_name + "."

882

+ property_name)

883

884

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

1284

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

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

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

1290

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

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

885

1298

out_signature="v")

886

1299

def Get(self, interface_name, property_name):

887

1300

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

905

1318

# The byte_arrays option is not supported yet on

906

1319

# signatures other than "ay".

907

1320

if prop._dbus_signature != "ay":

908

raise ValueError

1321

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

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

909

1324

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

910

1325

for byte in value))

911

1326

prop(value)

912

1327

913

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

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

914

1330

out_signature="a{sv}")

915

1331

def GetAll(self, interface_name):

916

1332

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

931

1347

if not hasattr(value, "variant_level"):

932

1348

properties[name] = value

933

1349

continue

934

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

935

value.variant_level+1)

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

936

1352

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

937

1353

1354

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

1355

def PropertiesChanged(self, interface_name, changed_properties,

1356

invalidated_properties):

1357

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

1358

standard.

1359

"""

1360

pass

1361

938

1362

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

939

1363

out_signature="s",

940

1364

path_keyword='object_path',

944

1368

945

1369

Inserts property tags and interface annotation tags.

946

1370

"""

947

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

948

connection)

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

949

1374

try:

950

1375

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

1376

951

1377

def make_tag(document, name, prop):

952

1378

e = document.createElement("property")

953

1379

e.setAttribute("name", name)

954

1380

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

955

1381

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

956

1382

return e

1383

957

1384

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

958

1385

# Add property tags

959

1386

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

962

1389

if prop._dbus_interface

963

1390

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

964

1391

if_tag.appendChild(tag)

965

# Add annotation tags

966

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

967

for tag in if_tag.getElementsByTagName(typ):

968

annots = dict()

969

for name, prop in (self.

970

_get_all_dbus_things(typ)):

971

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

972

and prop._dbus_interface

973

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

974

annots.update(getattr

975

(prop,

976

"_dbus_annotations",

977

{}))

978

for name, value in annots.iteritems():

979

ann_tag = document.createElement(

980

"annotation")

981

ann_tag.setAttribute("name", name)

982

ann_tag.setAttribute("value", value)

983

tag.appendChild(ann_tag)

984

# Add interface annotation tags

985

for annotation, value in dict(

986

itertools.chain.from_iterable(

987

annotations().iteritems()

988

for name, annotations in

989

self._get_all_dbus_things("interface")

990

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

991

)).iteritems():

992

ann_tag = document.createElement("annotation")

993

ann_tag.setAttribute("name", annotation)

994

ann_tag.setAttribute("value", value)

995

if_tag.appendChild(ann_tag)

1392

# Add annotation tags for properties

1393

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

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

996

1408

# Add the names to the return values for the

997

1409

# "org.freedesktop.DBus.Properties" methods

998

1410

if (if_tag.getAttribute("name")

1016

1428

exc_info=error)

1017

1429

return xmlstring

1018

1430

1431

try:

1432

dbus.OBJECT_MANAGER_IFACE

1433

except AttributeError:

1434

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

1435

1436

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1437

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

1438

1439

Classes inheriting from this exposes the standard

1440

GetManagedObjects call and the InterfacesAdded and

1441

InterfacesRemoved signals on the standard

1442

"org.freedesktop.DBus.ObjectManager" interface.

1443

1444

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

1445

manually.

1446

"""

1447

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1448

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

1449

def GetManagedObjects(self):

1450

"""This function must be overridden"""

1451

raise NotImplementedError()

1452

1453

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1454

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

1455

def InterfacesAdded(self, object_path, interfaces_and_properties):

1456

pass

1457

1458

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

1459

def InterfacesRemoved(self, object_path, interfaces):

1460

pass

1461

1462

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1463

out_signature = "s",

1464

path_keyword = 'object_path',

1465

connection_keyword = 'connection')

1466

def Introspect(self, object_path, connection):

1467

"""Overloading of standard D-Bus method.

1468

1469

Override return argument name of GetManagedObjects to be

1470

"objpath_interfaces_and_properties"

1471

"""

1472

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1473

object_path,

1474

connection)

1475

try:

1476

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

1477

1478

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

1479

# Fix argument name for the GetManagedObjects method

1480

if (if_tag.getAttribute("name")

1481

== dbus.OBJECT_MANAGER_IFACE):

1482

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

1483

if (cn.getAttribute("name")

1484

== "GetManagedObjects"):

1485

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

1486

if (arg.getAttribute("direction")

1487

== "out"):

1488

arg.setAttribute(

1489

"name",

1490

"objpath_interfaces"

1491

"_and_properties")

1492

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

1493

document.unlink()

1494

except (AttributeError, xml.dom.DOMException,

1495

xml.parsers.expat.ExpatError) as error:

1496

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

1497

exc_info = error)

1498

return xmlstring

1019

1499

1020

1500

def datetime_to_dbus(dt, variant_level=0):

1021

1501

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

1022

1502

if dt is None:

1023

1503

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

1024

return dbus.String(dt.isoformat(),

1025

variant_level=variant_level)

1504

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

1026

1505

1027

1506

1028

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1048

1527

(from DBusObjectWithProperties) and interfaces (from the

1049

1528

dbus_interface_annotations decorator).

1050

1529

"""

1530

1051

1531

def wrapper(cls):

1052

1532

for orig_interface_name, alt_interface_name in (

1053

alt_interface_names.iteritems()):

1533

alt_interface_names.items()):

1054

1534

attr = {}

1055

1535

interface_names = set()

1056

1536

# Go though all attributes of the class

1058

1538

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

1059

1539

# with the wrong interface name

1060

1540

if (not hasattr(attribute, "_dbus_interface")

1061

or not attribute._dbus_interface

1062

.startswith(orig_interface_name)):

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

1063

1543

continue

1064

1544

# Create an alternate D-Bus interface name based on

1065

1545

# the current name

1066

alt_interface = (attribute._dbus_interface

1067

.replace(orig_interface_name,

1068

alt_interface_name))

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1069

1548

interface_names.add(alt_interface)

1070

1549

# Is this a D-Bus signal?

1071

1550

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

1072

# Extract the original non-method function by

1073

# black magic

1074

nonmethod_func = (dict(

1551

# Extract the original non-method undecorated

1552

# function by black magic

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

1075

1555

zip(attribute.func_code.co_freevars,

1076

attribute.__closure__))["func"]

1077

.cell_contents)

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

1078

1563

# Create a new, but exactly alike, function

1079

1564

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

1080

1565

# with the alternate D-Bus interface name

1081

new_function = (dbus.service.signal

1082

(alt_interface,

1083

attribute._dbus_signature)

1084

(types.FunctionType(

1085

nonmethod_func.func_code,

1086

nonmethod_func.func_globals,

1087

nonmethod_func.func_name,

1088

nonmethod_func.func_defaults,

1089

nonmethod_func.func_closure)))

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1090

1570

# Copy annotations, if any

1091

1571

try:

1092

new_function._dbus_annotations = (

1093

dict(attribute._dbus_annotations))

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1094

1574

except AttributeError:

1095

1575

pass

1096

1576

# Define a creator of a function to call both the

1101

1581

"""This function is a scope container to pass

1102

1582

func1 and func2 to the "call_both" function

1103

1583

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1104

1586

def call_both(*args, **kwargs):

1105

1587

"""This function will emit two D-Bus

1106

1588

signals by calling func1 and func2"""

1107

1589

func1(*args, **kwargs)

1108

1590

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

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

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1109

1596

return call_both

1110

1597

# Create the "call_both" function and add it to

1111

1598

# the class

1116

1603

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

1117

1604

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

1118

1605

# to the class.

1119

attr[attrname] = (dbus.service.method

1120

(alt_interface,

1121

attribute._dbus_in_signature,

1122

attribute._dbus_out_signature)

1123

(types.FunctionType

1124

(attribute.func_code,

1125

attribute.func_globals,

1126

attribute.func_name,

1127

attribute.func_defaults,

1128

attribute.func_closure)))

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1129

1612

# Copy annotations, if any

1130

1613

try:

1131

attr[attrname]._dbus_annotations = (

1132

dict(attribute._dbus_annotations))

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1133

1616

except AttributeError:

1134

1617

pass

1135

1618

# Is this a D-Bus property?

1138

1621

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

1139

1622

# property with the alternate D-Bus interface

1140

1623

# name. Add it to the class.

1141

attr[attrname] = (dbus_service_property

1142

(alt_interface,

1143

attribute._dbus_signature,

1144

attribute._dbus_access,

1145

attribute

1146

._dbus_get_args_options

1147

["byte_arrays"])

1148

(types.FunctionType

1149

(attribute.func_code,

1150

attribute.func_globals,

1151

attribute.func_name,

1152

attribute.func_defaults,

1153

attribute.func_closure)))

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1154

1630

# Copy annotations, if any

1155

1631

try:

1156

attr[attrname]._dbus_annotations = (

1157

dict(attribute._dbus_annotations))

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1158

1634

except AttributeError:

1159

1635

pass

1160

1636

# Is this a D-Bus interface?

1163

1639

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

1164

1640

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

1165

1641

# to the class.

1166

attr[attrname] = (dbus_interface_annotations

1167

(alt_interface)

1168

(types.FunctionType

1169

(attribute.func_code,

1170

attribute.func_globals,

1171

attribute.func_name,

1172

attribute.func_defaults,

1173

attribute.func_closure)))

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1174

1645

if deprecate:

1175

1646

# Deprecate all alternate interfaces

1176

iname="_AlternateDBusNames_interface_annotation{0}"

1647

iname="_AlternateDBusNames_interface_annotation{}"

1177

1648

for interface_name in interface_names:

1649

1178

1650

@dbus_interface_annotations(interface_name)

1179

1651

def func(self):

1180

1652

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

1181

"true" }

1653

"true" }

1182

1654

# Find an unused name

1183

1655

for aname in (iname.format(i)

1184

1656

for i in itertools.count()):

1188

1660

if interface_names:

1189

1661

# Replace the class with a new subclass of it with

1190

1662

# methods, signals, etc. as created above.

1191

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

1192

(cls,), attr)

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1193

1669

return cls

1670

1194

1671

return wrapper

1195

1672

1196

1673

1197

1674

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

1198

"se.bsnet.fukt.Mandos"})

1675

"se.bsnet.fukt.Mandos"})

1199

1676

class ClientDBus(Client, DBusObjectWithProperties):

1200

1677

"""A Client class using D-Bus

1201

1678

1205

1682

"""

1206

1683

1207

1684

runtime_expansions = (Client.runtime_expansions

1208

+ ("dbus_object_path",))

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

1209

1688

1210

1689

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

1211

1690

1214

1693

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

1215

1694

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

1216

1695

# the D-Bus

1217

client_object_name = unicode(self.name).translate(

1696

client_object_name = str(self.name).translate(

1218

1697

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

1219

1698

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

1220

self.dbus_object_path = (dbus.ObjectPath

1221

("/clients/" + client_object_name))

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

1222

1701

DBusObjectWithProperties.__init__(self, self.bus,

1223

1702

self.dbus_object_path)

1224

1703

1225

def notifychangeproperty(transform_func,

1226

dbus_name, type_func=lambda x: x,

1227

variant_level=1):

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

1228

1709

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

1229

1710

its changes to DBus.

1230

1711

1235

1716

to the D-Bus. Default: no transform

1236

1717

variant_level: D-Bus variant level. Default: 1

1237

1718

"""

1238

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

1719

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

1720

1239

1721

def setter(self, value):

1240

1722

if hasattr(self, "dbus_object_path"):

1241

1723

if (not hasattr(self, attrname) or

1242

1724

type_func(getattr(self, attrname, None))

1243

1725

!= type_func(value)):

1244

dbus_value = transform_func(type_func(value),

1245

variant_level

1246

=variant_level)

1247

self.PropertyChanged(dbus.String(dbus_name),

1248

dbus_value)

1726

if invalidate_only:

1727

self.PropertiesChanged(

1728

_interface, dbus.Dictionary(),

1729

dbus.Array((dbus_name, )))

1730

else:

1731

dbus_value = transform_func(

1732

type_func(value),

1733

variant_level = variant_level)

1734

self.PropertyChanged(dbus.String(dbus_name),

1735

dbus_value)

1736

self.PropertiesChanged(

1737

_interface,

1738

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

1739

dbus_value }),

1740

dbus.Array())

1249

1741

setattr(self, attrname, value)

1250

1742

1251

1743

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

1257

1749

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

1258

1750

last_enabled = notifychangeproperty(datetime_to_dbus,

1259

1751

"LastEnabled")

1260

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

1261

type_func = lambda checker:

1262

checker is not None)

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

1263

1755

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1264

1756

"LastCheckedOK")

1265

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1268

1760

datetime_to_dbus, "LastApprovalRequest")

1269

1761

approved_by_default = notifychangeproperty(dbus.Boolean,

1270

1762

"ApprovedByDefault")

1271

approval_delay = notifychangeproperty(dbus.UInt64,

1272

"ApprovalDelay",

1273

type_func =

1274

timedelta_to_milliseconds)

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

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

1275

1766

approval_duration = notifychangeproperty(

1276

1767

dbus.UInt64, "ApprovalDuration",

1277

type_func = timedelta_to_milliseconds)

1768

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

1278

1769

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

1279

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

1280

type_func =

1281

timedelta_to_milliseconds)

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

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

1282

1773

extended_timeout = notifychangeproperty(

1283

1774

dbus.UInt64, "ExtendedTimeout",

1284

type_func = timedelta_to_milliseconds)

1285

interval = notifychangeproperty(dbus.UInt64,

1286

"Interval",

1287

type_func =

1288

timedelta_to_milliseconds)

1775

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

1776

interval = notifychangeproperty(

1777

dbus.UInt64, "Interval",

1778

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

1289

1779

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

1780

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

1781

invalidate_only=True)

1290

1782

1291

1783

del notifychangeproperty

1292

1784

1299

1791

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

1300

1792

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

1301

1793

1302

def checker_callback(self, pid, condition, command,

1303

*args, **kwargs):

1304

self.checker_callback_tag = None

1305

self.checker = None

1306

if os.WIFEXITED(condition):

1307

exitstatus = os.WEXITSTATUS(condition)

1794

def checker_callback(self, source, condition,

1795

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

1796

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

1797

connection, command, *args,

1798

**kwargs)

1799

exitstatus = self.last_checker_status

1800

if exitstatus >= 0:

1308

1801

# Emit D-Bus signal

1309

1802

self.CheckerCompleted(dbus.Int16(exitstatus),

1310

dbus.Int64(condition),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

1311

1805

dbus.String(command))

1312

1806

else:

1313

1807

# Emit D-Bus signal

1314

1808

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

1315

dbus.Int64(condition),

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

1316

1813

dbus.String(command))

1317

1318

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

1319

*args, **kwargs)

1814

return ret

1320

1815

1321

1816

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

1322

old_checker = self.checker

1323

if self.checker is not None:

1324

old_checker_pid = self.checker.pid

1325

else:

1326

old_checker_pid = None

1817

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

1327

1818

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

1328

1819

# Only if new checker process was started

1329

1820

if (self.checker is not None

1338

1829

1339

1830

def approve(self, value=True):

1340

1831

self.approved = value

1341

gobject.timeout_add(timedelta_to_milliseconds

1342

(self.approval_duration),

1343

self._reset_approved)

1832

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

1833

* 1000), self._reset_approved)

1344

1834

self.send_changedstate()

1345

1835

1346

1836

## D-Bus methods, signals & properties

1347

_interface = "se.recompile.Mandos.Client"

1348

1837

1349

1838

## Interfaces

1350

1839

1351

@dbus_interface_annotations(_interface)

1352

def _foo(self):

1353

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

1354

"false"}

1355

1356

1840

## Signals

1357

1841

1358

1842

# CheckerCompleted - signal

1368

1852

pass

1369

1853

1370

1854

# PropertyChanged - signal

1855

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

1371

1856

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

1372

1857

def PropertyChanged(self, property, value):

1373

1858

"D-Bus signal"

1407

1892

self.checked_ok()

1408

1893

1409

1894

# Enable - method

1895

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

1410

1896

@dbus.service.method(_interface)

1411

1897

def Enable(self):

1412

1898

"D-Bus method"

1413

1899

self.enable()

1414

1900

1415

1901

# StartChecker - method

1902

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

1416

1903

@dbus.service.method(_interface)

1417

1904

def StartChecker(self):

1418

1905

"D-Bus method"

1419

1906

self.start_checker()

1420

1907

1421

1908

# Disable - method

1909

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

1422

1910

@dbus.service.method(_interface)

1423

1911

def Disable(self):

1424

1912

"D-Bus method"

1425

1913

self.disable()

1426

1914

1427

1915

# StopChecker - method

1916

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

1428

1917

@dbus.service.method(_interface)

1429

1918

def StopChecker(self):

1430

1919

self.stop_checker()

1437

1926

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

1438

1927

1439

1928

# ApprovedByDefault - property

1440

@dbus_service_property(_interface, signature="b",

1929

@dbus_service_property(_interface,

1930

signature="b",

1441

1931

access="readwrite")

1442

1932

def ApprovedByDefault_dbus_property(self, value=None):

1443

1933

if value is None: # get

1445

1935

self.approved_by_default = bool(value)

1446

1936

1447

1937

# ApprovalDelay - property

1448

@dbus_service_property(_interface, signature="t",

1938

@dbus_service_property(_interface,

1939

signature="t",

1449

1940

access="readwrite")

1450

1941

def ApprovalDelay_dbus_property(self, value=None):

1451

1942

if value is None: # get

1452

return dbus.UInt64(self.approval_delay_milliseconds())

1943

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

1944

* 1000)

1453

1945

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

1454

1946

1455

1947

# ApprovalDuration - property

1456

@dbus_service_property(_interface, signature="t",

1948

@dbus_service_property(_interface,

1949

signature="t",

1457

1950

access="readwrite")

1458

1951

def ApprovalDuration_dbus_property(self, value=None):

1459

1952

if value is None: # get

1460

return dbus.UInt64(timedelta_to_milliseconds(

1461

self.approval_duration))

1953

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

1954

* 1000)

1462

1955

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

1463

1956

1464

1957

# Name - property

1958

@dbus_annotations(

1959

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

1465

1960

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

1466

1961

def Name_dbus_property(self):

1467

1962

return dbus.String(self.name)

1468

1963

1469

1964

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1470

1967

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

1471

1968

def Fingerprint_dbus_property(self):

1472

1969

return dbus.String(self.fingerprint)

1473

1970

1474

1971

# Host - property

1475

@dbus_service_property(_interface, signature="s",

1972

@dbus_service_property(_interface,

1973

signature="s",

1476

1974

access="readwrite")

1477

1975

def Host_dbus_property(self, value=None):

1478

1976

if value is None: # get

1479

1977

return dbus.String(self.host)

1480

self.host = unicode(value)

1978

self.host = str(value)

1481

1979

1482

1980

# Created - property

1981

@dbus_annotations(

1982

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

1483

1983

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

1484

1984

def Created_dbus_property(self):

1485

1985

return datetime_to_dbus(self.created)

1490

1990

return datetime_to_dbus(self.last_enabled)

1491

1991

1492

1992

# Enabled - property

1493

@dbus_service_property(_interface, signature="b",

1993

@dbus_service_property(_interface,

1994

signature="b",

1494

1995

access="readwrite")

1495

1996

def Enabled_dbus_property(self, value=None):

1496

1997

if value is None: # get

1501

2002

self.disable()

1502

2003

1503

2004

# LastCheckedOK - property

1504

@dbus_service_property(_interface, signature="s",

2005

@dbus_service_property(_interface,

2006

signature="s",

1505

2007

access="readwrite")

1506

2008

def LastCheckedOK_dbus_property(self, value=None):

1507

2009

if value is not None:

1510

2012

return datetime_to_dbus(self.last_checked_ok)

1511

2013

1512

2014

# LastCheckerStatus - property

1513

@dbus_service_property(_interface, signature="n",

1514

access="read")

2015

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

1515

2016

def LastCheckerStatus_dbus_property(self):

1516

2017

return dbus.Int16(self.last_checker_status)

1517

2018

1526

2027

return datetime_to_dbus(self.last_approval_request)

1527

2028

1528

2029

# Timeout - property

1529

@dbus_service_property(_interface, signature="t",

2030

@dbus_service_property(_interface,

2031

signature="t",

1530

2032

access="readwrite")

1531

2033

def Timeout_dbus_property(self, value=None):

1532

2034

if value is None: # get

1533

return dbus.UInt64(self.timeout_milliseconds())

2035

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

1534

2036

old_timeout = self.timeout

1535

2037

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

1536

2038

# Reschedule disabling

1544

2046

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

1545

2047

is None):

1546

2048

return

1547

gobject.source_remove(self.disable_initiator_tag)

1548

self.disable_initiator_tag = (

1549

gobject.timeout_add(

1550

timedelta_to_milliseconds(self.expires - now),

1551

self.disable))

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

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

2052

self.disable)

1552

2053

1553

2054

# ExtendedTimeout - property

1554

@dbus_service_property(_interface, signature="t",

2055

@dbus_service_property(_interface,

2056

signature="t",

1555

2057

access="readwrite")

1556

2058

def ExtendedTimeout_dbus_property(self, value=None):

1557

2059

if value is None: # get

1558

return dbus.UInt64(self.extended_timeout_milliseconds())

2060

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

2061

* 1000)

1559

2062

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

1560

2063

1561

2064

# Interval - property

1562

@dbus_service_property(_interface, signature="t",

2065

@dbus_service_property(_interface,

2066

signature="t",

1563

2067

access="readwrite")

1564

2068

def Interval_dbus_property(self, value=None):

1565

2069

if value is None: # get

1566

return dbus.UInt64(self.interval_milliseconds())

2070

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

1567

2071

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

1568

2072

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

1569

2073

return

1570

2074

if self.enabled:

1571

2075

# Reschedule checker run

1572

gobject.source_remove(self.checker_initiator_tag)

1573

self.checker_initiator_tag = (gobject.timeout_add

1574

(value, self.start_checker))

1575

self.start_checker() # Start one now, too

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

1576

2080

1577

2081

# Checker - property

1578

@dbus_service_property(_interface, signature="s",

2082

@dbus_service_property(_interface,

2083

signature="s",

1579

2084

access="readwrite")

1580

2085

def Checker_dbus_property(self, value=None):

1581

2086

if value is None: # get

1582

2087

return dbus.String(self.checker_command)

1583

self.checker_command = unicode(value)

2088

self.checker_command = str(value)

1584

2089

1585

2090

# CheckerRunning - property

1586

@dbus_service_property(_interface, signature="b",

2091

@dbus_service_property(_interface,

2092

signature="b",

1587

2093

access="readwrite")

1588

2094

def CheckerRunning_dbus_property(self, value=None):

1589

2095

if value is None: # get

1594

2100

self.stop_checker()

1595

2101

1596

2102

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

1597

2106

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

1598

2107

def ObjectPath_dbus_property(self):

1599

2108

return self.dbus_object_path # is already a dbus.ObjectPath

1600

2109

1601

2110

# Secret = property

1602

@dbus_service_property(_interface, signature="ay",

1603

access="write", byte_arrays=True)

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1604

2118

def Secret_dbus_property(self, value):

1605

self.secret = str(value)

2119

self.secret = bytes(value)

1606

2120

1607

2121

del _interface

1608

2122

1612

2126

self._pipe = child_pipe

1613

2127

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

1614

2128

if not self._pipe.recv():

1615

raise KeyError()

2129

raise KeyError(fpr)

1616

2130

1617

2131

def __getattribute__(self, name):

1618

2132

if name == '_pipe':

1622

2136

if data[0] == 'data':

1623

2137

return data[1]

1624

2138

if data[0] == 'function':

2139

1625

2140

def func(*args, **kwargs):

1626

2141

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

1627

2142

return self._pipe.recv()[1]

2143

1628

2144

return func

1629

2145

1630

2146

def __setattr__(self, name, value):

1642

2158

def handle(self):

1643

2159

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

1644

2160

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

1645

unicode(self.client_address))

2161

str(self.client_address))

1646

2162

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

1647

2163

self.server.child_pipe.fileno())

1648

2164

1649

session = (gnutls.connection

1650

.ClientSession(self.request,

1651

gnutls.connection

1652

.X509Credentials()))

1653

1654

# Note: gnutls.connection.X509Credentials is really a

1655

# generic GnuTLS certificate credentials object so long as

1656

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

1657

# here despite using OpenPGP certificates.

2165

session = gnutls.ClientSession(self.request)

1658

2166

1659

2167

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

1660

2168

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

1664

2172

priority = self.server.gnutls_priority

1665

2173

if priority is None:

1666

2174

priority = "NORMAL"

1667

(gnutls.library.functions

1668

.gnutls_priority_set_direct(session._c_object,

1669

priority, None))

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1670

2177

1671

2178

# Start communication using the Mandos protocol

1672

2179

# Get protocol number

1674

2181

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

1675

2182

try:

1676

2183

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

1677

raise RuntimeError

2184

raise RuntimeError(line)

1678

2185

except (ValueError, IndexError, RuntimeError) as error:

1679

2186

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

1680

2187

return

1682

2189

# Start GnuTLS connection

1683

2190

try:

1684

2191

session.handshake()

1685

except gnutls.errors.GNUTLSError as error:

2192

except gnutls.Error as error:

1686

2193

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

1687

2194

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

1688

2195

# established. Just abandon the request.

1692

2199

approval_required = False

1693

2200

try:

1694

2201

try:

1695

fpr = self.fingerprint(self.peer_certificate

1696

(session))

1697

except (TypeError,

1698

gnutls.errors.GNUTLSError) as error:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1699

2205

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

1700

2206

return

1701

2207

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

1714

2220

while True:

1715

2221

if not client.enabled:

1716

2222

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

1717

client.name)

2223

client.name)

1718

2224

if self.server.use_dbus:

1719

2225

# Emit D-Bus signal

1720

2226

client.Rejected("Disabled")

1729

2235

if self.server.use_dbus:

1730

2236

# Emit D-Bus signal

1731

2237

client.NeedApproval(

1732

client.approval_delay_milliseconds(),

1733

client.approved_by_default)

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1734

2240

else:

1735

2241

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

1736

2242

client.name)

1742

2248

#wait until timeout or approved

1743

2249

time = datetime.datetime.now()

1744

2250

client.changedstate.acquire()

1745

client.changedstate.wait(

1746

float(timedelta_to_milliseconds(delay)

1747

/ 1000))

2251

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

1748

2252

client.changedstate.release()

1749

2253

time2 = datetime.datetime.now()

1750

2254

if (time2 - time) >= delay:

1761

2265

else:

1762

2266

delay -= time2 - time

1763

2267

1764

sent_size = 0

1765

while sent_size < len(client.secret):

1766

try:

1767

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

1768

except gnutls.errors.GNUTLSError as error:

1769

logger.warning("gnutls send failed",

1770

exc_info=error)

1771

return

1772

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

1773

sent, len(client.secret)

1774

- (sent_size + sent))

1775

sent_size += sent

2268

try:

2269

session.send(client.secret)

2270

except gnutls.Error as error:

2271

logger.warning("gnutls send failed",

2272

exc_info = error)

2273

return

1776

2274

1777

2275

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

1778

2276

# bump the timeout using extended_timeout

1786

2284

client.approvals_pending -= 1

1787

2285

try:

1788

2286

session.bye()

1789

except gnutls.errors.GNUTLSError as error:

2287

except gnutls.Error as error:

1790

2288

logger.warning("GnuTLS bye failed",

1791

2289

exc_info=error)

1792

2290

1794

2292

def peer_certificate(session):

1795

2293

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

1796

2294

# If not an OpenPGP certificate...

1797

if (gnutls.library.functions

1798

.gnutls_certificate_type_get(session._c_object)

1799

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1800

# ...do the normal thing

1801

return session.peer_certificate

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1802

2299

list_size = ctypes.c_uint(1)

1803

cert_list = (gnutls.library.functions

1804

.gnutls_certificate_get_peers

2300

cert_list = (gnutls.certificate_get_peers

1805

2301

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

1806

2302

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

1807

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

1808

" certificate")

2303

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

1809

2304

if list_size.value == 0:

1810

2305

return None

1811

2306

cert = cert_list[0]

1815

2310

def fingerprint(openpgp):

1816

2311

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1817

2312

# New GnuTLS "datum" with the OpenPGP public key

1818

datum = (gnutls.library.types

1819

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

1820

ctypes.POINTER

1821

(ctypes.c_ubyte)),

1822

ctypes.c_uint(len(openpgp))))

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

1823

2317

# New empty GnuTLS certificate

1824

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1825

(gnutls.library.functions

1826

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1827

2320

# Import the OpenPGP public key into the certificate

1828

(gnutls.library.functions

1829

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

1830

gnutls.library.constants

1831

.GNUTLS_OPENPGP_FMT_RAW))

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1832

2323

# Verify the self signature in the key

1833

2324

crtverify = ctypes.c_uint()

1834

(gnutls.library.functions

1835

.gnutls_openpgp_crt_verify_self(crt, 0,

1836

ctypes.byref(crtverify)))

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1837

2327

if crtverify.value != 0:

1838

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1839

raise (gnutls.errors.CertificateSecurityError

1840

("Verify failed"))

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1841

2330

# New buffer for the fingerprint

1842

2331

buf = ctypes.create_string_buffer(20)

1843

2332

buf_len = ctypes.c_size_t()

1844

2333

# Get the fingerprint from the certificate into the buffer

1845

(gnutls.library.functions

1846

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

1847

ctypes.byref(buf_len)))

2334

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

2335

ctypes.byref(buf_len))

1848

2336

# Deinit the certificate

1849

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2337

gnutls.openpgp_crt_deinit(crt)

1850

2338

# Convert the buffer to a Python bytestring

1851

2339

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

1852

2340

# Convert the bytestring to hexadecimal notation

1856

2344

1857

2345

class MultiprocessingMixIn(object):

1858

2346

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

2347

1859

2348

def sub_process_main(self, request, address):

1860

2349

try:

1861

2350

self.finish_request(request, address)

1873

2362

1874

2363

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1875

2364

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

2365

1876

2366

def process_request(self, request, client_address):

1877

2367

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

1878

2368

1887

2377

1888

2378

def add_pipe(self, parent_pipe, proc):

1889

2379

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

1890

raise NotImplementedError

2380

raise NotImplementedError()

1891

2381

1892

2382

1893

2383

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1899

2389

interface: None or a network interface name (string)

1900

2390

use_ipv6: Boolean; to use IPv6 or not

1901

2391

"""

2392

1902

2393

def __init__(self, server_address, RequestHandlerClass,

1903

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

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

1904

2397

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

1905

2398

creating a new one with socket.socket().

1906

2399

"""

1947

2440

self.interface)

1948

2441

else:

1949

2442

try:

1950

self.socket.setsockopt(socket.SOL_SOCKET,

1951

SO_BINDTODEVICE,

1952

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

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1953

2446

except socket.error as error:

1954

2447

if error.errno == errno.EPERM:

1955

2448

logger.error("No permission to bind to"

1969

2462

if self.address_family == socket.AF_INET6:

1970

2463

any_address = "::" # in6addr_any

1971

2464

else:

1972

any_address = socket.INADDR_ANY

2465

any_address = "0.0.0.0" # INADDR_ANY

1973

2466

self.server_address = (any_address,

1974

2467

self.server_address[1])

1975

2468

elif not self.server_address[1]:

1976

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

1977

0)

2469

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

1978

2470

# if self.interface:

1979

2471

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

1980

2472

# 0, # port

1992

2484

gnutls_priority GnuTLS priority string

1993

2485

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

1994

2486

1995

Assumes a gobject.MainLoop event loop.

2487

Assumes a GLib.MainLoop event loop.

1996

2488

"""

2489

1997

2490

def __init__(self, server_address, RequestHandlerClass,

1998

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

1999

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

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

2000

2497

self.enabled = False

2001

2498

self.clients = clients

2002

2499

if self.clients is None:

2008

2505

interface = interface,

2009

2506

use_ipv6 = use_ipv6,

2010

2507

socketfd = socketfd)

2508

2011

2509

def server_activate(self):

2012

2510

if self.enabled:

2013

2511

return socketserver.TCPServer.server_activate(self)

2017

2515

2018

2516

def add_pipe(self, parent_pipe, proc):

2019

2517

# Call "handle_ipc" for both data and EOF events

2020

gobject.io_add_watch(parent_pipe.fileno(),

2021

gobject.IO_IN | gobject.IO_HUP,

2022

functools.partial(self.handle_ipc,

2023

parent_pipe =

2024

parent_pipe,

2025

proc = proc))

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

2026

2524

2027

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

2028

proc = None, client_object=None):

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

2029

2529

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

2030

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

2530

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

2031

2531

# Wait for other process to exit

2032

2532

proc.join()

2033

2533

return False

2040

2540

fpr = request[1]

2041

2541

address = request[2]

2042

2542

2043

for c in self.clients.itervalues():

2543

for c in self.clients.values():

2044

2544

if c.fingerprint == fpr:

2045

2545

client = c

2046

2546

break

2054

2554

parent_pipe.send(False)

2055

2555

return False

2056

2556

2057

gobject.io_add_watch(parent_pipe.fileno(),

2058

gobject.IO_IN | gobject.IO_HUP,

2059

functools.partial(self.handle_ipc,

2060

parent_pipe =

2061

parent_pipe,

2062

proc = proc,

2063

client_object =

2064

client))

2557

GLib.io_add_watch(

2558

parent_pipe.fileno(),

2559

GLib.IO_IN | GLib.IO_HUP,

2560

functools.partial(self.handle_ipc,

2561

parent_pipe = parent_pipe,

2562

proc = proc,

2563

client_object = client))

2065

2564

parent_pipe.send(True)

2066

2565

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

2067

2566

# same fileno

2073

2572

2074

2573

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

2075

2574

funcname)(*args,

2076

**kwargs)))

2575

**kwargs)))

2077

2576

2078

2577

if command == 'getattr':

2079

2578

attrname = request[1]

2080

if callable(client_object.__getattribute__(attrname)):

2081

parent_pipe.send(('function',))

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

2082

2582

else:

2083

parent_pipe.send(('data', client_object

2084

.__getattribute__(attrname)))

2583

parent_pipe.send((

2584

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

2085

2585

2086

2586

if command == 'setattr':

2087

2587

attrname = request[1]

2118

2618

# avoid excessive use of external libraries.

2119

2619

2120

2620

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

2121

Token = collections.namedtuple("Token",

2122

("regexp", # To match token; if

2123

# "value" is not None,

2124

# must have a "group"

2125

# containing digits

2126

"value", # datetime.timedelta or

2127

# None

2128

"followers")) # Tokens valid after

2129

# this token

2621

Token = collections.namedtuple("Token", (

2622

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

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2130

2626

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

2131

2627

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

2132

2628

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

2133

2629

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

2134

2630

datetime.timedelta(seconds=1),

2135

frozenset((token_end,)))

2631

frozenset((token_end, )))

2136

2632

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

2137

2633

datetime.timedelta(minutes=1),

2138

2634

frozenset((token_second, token_end)))

2154

2650

frozenset((token_month, token_end)))

2155

2651

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

2156

2652

datetime.timedelta(weeks=1),

2157

frozenset((token_end,)))

2653

frozenset((token_end, )))

2158

2654

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

2159

2655

frozenset((token_year, token_month,

2160

2656

token_day, token_time,

2161

token_week))),

2657

token_week)))

2162

2658

# Define starting values

2163

2659

value = datetime.timedelta() # Value so far

2164

2660

found_token = None

2165

followers = frozenset(token_duration,) # Following valid tokens

2661

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

2166

2662

s = duration # String left to parse

2167

2663

# Loop until end token is found

2168

2664

while found_token is not token_end:

2185

2681

break

2186

2682

else:

2187

2683

# No currently valid tokens were found

2188

raise ValueError("Invalid RFC 3339 duration")

2684

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

2685

.format(duration))

2189

2686

# End token found

2190

2687

return value

2191

2688

2215

2712

timevalue = datetime.timedelta(0)

2216

2713

for s in interval.split():

2217

2714

try:

2218

suffix = unicode(s[-1])

2715

suffix = s[-1]

2219

2716

value = int(s[:-1])

2220

2717

if suffix == "d":

2221

2718

delta = datetime.timedelta(value)

2228

2725

elif suffix == "w":

2229

2726

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

2230

2727

else:

2231

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

2232

.format(suffix))

2233

except (ValueError, IndexError) as e:

2728

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

2729

except IndexError as e:

2234

2730

raise ValueError(*(e.args))

2235

2731

timevalue += delta

2236

2732

return timevalue

2252

2748

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

2253

2749

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

2254

2750

raise OSError(errno.ENODEV,

2255

"{0} not a character device"

2751

"{} not a character device"

2256

2752

.format(os.devnull))

2257

2753

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

2258

2754

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

2268

2764

2269

2765

parser = argparse.ArgumentParser()

2270

2766

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

2271

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

2767

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

2272

2768

help="show version number and exit")

2273

2769

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

2274

2770

help="Bind to interface IF")

2280

2776

help="Run self-test")

2281

2777

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

2282

2778

help="Debug mode; run in foreground and log"

2283

" to terminal")

2779

" to terminal", default=None)

2284

2780

parser.add_argument("--debuglevel", metavar="LEVEL",

2285

2781

help="Debug level for stdout output")

2286

2782

parser.add_argument("--priority", help="GnuTLS"

2293

2789

" files")

2294

2790

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

2295

2791

dest="use_dbus", help="Do not provide D-Bus"

2296

" system bus interface")

2792

" system bus interface", default=None)

2297

2793

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

2298

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

2794

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

2795

default=None)

2299

2796

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

2300

2797

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

2301

" state")

2798

" state", default=None)

2302

2799

parser.add_argument("--socket", type=int,

2303

2800

help="Specify a file descriptor to a network"

2304

2801

" socket to use instead of creating one")

2305

2802

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

2306

2803

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

2307

2804

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

2308

help="Run in foreground")

2805

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

2806

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

2807

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

2808

default=None)

2309

2809

2310

2810

options = parser.parse_args()

2311

2811

2312

2812

if options.check:

2313

2813

import doctest

2314

doctest.testmod()

2315

sys.exit()

2814

fail_count, test_count = doctest.testmod()

2815

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

2316

2816

2317

2817

# Default values for config file for server-global settings

2318

2818

server_defaults = { "interface": "",

2320

2820

"port": "",

2321

2821

"debug": "False",

2322

2822

"priority":

2323

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

2823

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

2824

":+SIGN-DSA-SHA256",

2324

2825

"servicename": "Mandos",

2325

2826

"use_dbus": "True",

2326

2827

"use_ipv6": "True",

2329

2830

"socket": "",

2330

2831

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

2331

2832

"foreground": "False",

2332

}

2833

"zeroconf": "True",

2834

}

2333

2835

2334

2836

# Parse config file for server-global settings

2335

2837

server_config = configparser.SafeConfigParser(server_defaults)

2336

2838

del server_defaults

2337

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

2338

"mandos.conf"))

2839

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

2339

2840

# Convert the SafeConfigParser object to a dict

2340

2841

server_settings = server_config.defaults()

2341

2842

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

2359

2860

# Override the settings from the config file with command line

2360

2861

# options, if set.

2361

2862

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

2362

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

2363

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

2364

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

2863

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

2864

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

2865

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

2365

2866

value = getattr(options, option)

2366

2867

if value is not None:

2367

2868

server_settings[option] = value

2368

2869

del options

2369

2870

# Force all strings to be unicode

2370

2871

for option in server_settings.keys():

2371

if type(server_settings[option]) is str:

2372

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

2872

if isinstance(server_settings[option], bytes):

2873

server_settings[option] = (server_settings[option]

2874

.decode("utf-8"))

2875

# Force all boolean options to be boolean

2876

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

2877

"foreground", "zeroconf"):

2878

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

2373

2879

# Debug implies foreground

2374

2880

if server_settings["debug"]:

2375

2881

server_settings["foreground"] = True

2377

2883

2378

2884

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

2379

2885

2886

if (not server_settings["zeroconf"]

2887

and not (server_settings["port"]

2888

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

2889

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

2890

2380

2891

# For convenience

2381

2892

debug = server_settings["debug"]

2382

2893

debuglevel = server_settings["debuglevel"]

2385

2896

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

2386

2897

stored_state_file)

2387

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2388

2900

2389

2901

if debug:

2390

2902

initlogger(debug, logging.DEBUG)

2396

2908

initlogger(debug, level)

2397

2909

2398

2910

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

2399

syslogger.setFormatter(logging.Formatter

2400

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

2401

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

2402

.format(server_settings

2403

["servicename"])))

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

2404

2915

2405

2916

# Parse config file with clients

2406

2917

client_config = configparser.SafeConfigParser(Client

2411

2922

global mandos_dbus_service

2412

2923

mandos_dbus_service = None

2413

2924

2414

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

2415

server_settings["port"]),

2416

ClientHandler,

2417

interface=(server_settings["interface"]

2418

or None),

2419

use_ipv6=use_ipv6,

2420

gnutls_priority=

2421

server_settings["priority"],

2422

use_dbus=use_dbus,

2423

socketfd=(server_settings["socket"]

2424

or None))

2925

socketfd = None

2926

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

2927

socketfd = server_settings["socket"]

2928

tcp_server = MandosServer(

2929

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

2930

ClientHandler,

2931

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

2932

use_ipv6=use_ipv6,

2933

gnutls_priority=server_settings["priority"],

2934

use_dbus=use_dbus,

2935

socketfd=socketfd)

2425

2936

if not foreground:

2426

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

2937

pidfilename = "/run/mandos.pid"

2938

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

2939

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

2427

2940

pidfile = None

2428

2941

try:

2429

pidfile = open(pidfilename, "w")

2942

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

2430

2943

except IOError as e:

2431

2944

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

2432

2945

exc_info=e)

2433

2946

2434

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

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

2435

2950

try:

2436

2951

uid = pwd.getpwnam(name).pw_uid

2437

gid = pwd.getpwnam(name).pw_gid

2952

gid = pwd.getpwnam(group).pw_gid

2438

2953

break

2439

2954

except KeyError:

2440

2955

continue

2444

2959

try:

2445

2960

os.setgid(gid)

2446

2961

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2447

2965

except OSError as error:

2966

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

2967

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

2448

2968

if error.errno != errno.EPERM:

2449

raise error

2969

raise

2450

2970

2451

2971

if debug:

2452

2972

# Enable all possible GnuTLS debugging

2453

2973

2454

2974

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

2455

2975

# - GnuTLS manual

2456

gnutls.library.functions.gnutls_global_set_log_level(11)

2976

gnutls.global_set_log_level(11)

2457

2977

2458

@gnutls.library.types.gnutls_log_func

2978

@gnutls.log_func

2459

2979

def debug_gnutls(level, string):

2460

2980

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

2461

2981

2462

(gnutls.library.functions

2463

.gnutls_global_set_log_function(debug_gnutls))

2982

gnutls.global_set_log_function(debug_gnutls)

2464

2983

2465

2984

# Redirect stdin so all checkers get /dev/null

2466

2985

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

2473

2992

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

2474

2993

daemon()

2475

2994

2476

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

2477

# need to inform gobject that threads will be used.

2478

gobject.threads_init()

2995

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

2996

# to inform GLib that threads will be used.

2997

GLib.threads_init()

2479

2998

2480

2999

global main_loop

2481

3000

# From the Avahi example code

2482

3001

DBusGMainLoop(set_as_default=True)

2483

main_loop = gobject.MainLoop()

3002

main_loop = GLib.MainLoop()

2484

3003

bus = dbus.SystemBus()

2485

3004

# End of Avahi example code

2486

3005

if use_dbus:

2487

3006

try:

2488

3007

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

2489

bus, do_not_queue=True)

2490

old_bus_name = (dbus.service.BusName

2491

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

2492

do_not_queue=True))

2493

except dbus.exceptions.NameExistsException as e:

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

2494

3014

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

2495

3015

use_dbus = False

2496

3016

server_settings["use_dbus"] = False

2497

3017

tcp_server.use_dbus = False

2498

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2499

service = AvahiServiceToSyslog(name =

2500

server_settings["servicename"],

2501

servicetype = "_mandos._tcp",

2502

protocol = protocol, bus = bus)

2503

if server_settings["interface"]:

2504

service.interface = (if_nametoindex

2505

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

3018

if zeroconf:

3019

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3020

service = AvahiServiceToSyslog(

3021

name = server_settings["servicename"],

3022

servicetype = "_mandos._tcp",

3023

protocol = protocol,

3024

bus = bus)

3025

if server_settings["interface"]:

3026

service.interface = if_nametoindex(

3027

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

2506

3028

2507

3029

global multiprocessing_manager

2508

3030

multiprocessing_manager = multiprocessing.Manager()

2515

3037

old_client_settings = {}

2516

3038

clients_data = {}

2517

3039

3040

# This is used to redirect stdout and stderr for checker processes

3041

global wnull

3042

wnull = open(os.devnull, "w") # A writable /dev/null

3043

# Only used if server is running in foreground but not in debug

3044

# mode

3045

if debug or not foreground:

3046

wnull.close()

3047

2518

3048

# Get client data and settings from last running state.

2519

3049

if server_settings["restore"]:

2520

3050

try:

2521

3051

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

2522

clients_data, old_client_settings = (pickle.load

2523

(stored_state))

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

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

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

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

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

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

3069

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

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

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

3081

if isinstance(value[k], bytes):

3082

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

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

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

3095

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

3096

.decode("utf-8"))

2524

3097

os.remove(stored_state_path)

2525

3098

except IOError as e:

2526

3099

if e.errno == errno.ENOENT:

2527

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

2528

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

3100

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

3101

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

2529

3102

else:

2530

3103

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

2531

3104

exc_info=e)

2532

3105

raise

2533

3106

except EOFError as e:

2534

3107

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

2535

"EOFError:", exc_info=e)

3108

"EOFError:",

3109

exc_info=e)

2536

3110

2537

3111

with PGPEngine() as pgp:

2538

for client_name, client in clients_data.iteritems():

3112

for client_name, client in clients_data.items():

3113

# Skip removed clients

3114

if client_name not in client_settings:

3115

continue

3116

2539

3117

# Decide which value to use after restoring saved state.

2540

3118

# We have three different values: Old config file,

2541

3119

# new config file, and saved state.

2546

3124

# For each value in new config, check if it

2547

3125

# differs from the old config value (Except for

2548

3126

# the "secret" attribute)

2549

if (name != "secret" and

2550

value != old_client_settings[client_name]

2551

[name]):

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

2552

3130

client[name] = value

2553

3131

except KeyError:

2554

3132

pass

2555

3133

2556

3134

# Clients who has passed its expire date can still be

2557

# enabled if its last checker was successful. Clients

3135

# enabled if its last checker was successful. A Client

2558

3136

# whose checker succeeded before we stored its state is

2559

3137

# assumed to have successfully run all checkers during

2560

3138

# downtime.

2562

3140

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

2563

3141

if not client["last_checked_ok"]:

2564

3142

logger.warning(

2565

"disabling client {0} - Client never "

2566

"performed a successful checker"

2567

.format(client_name))

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

2568

3146

client["enabled"] = False

2569

3147

elif client["last_checker_status"] != 0:

2570

3148

logger.warning(

2571

"disabling client {0} - Client "

2572

"last checker failed with error code {1}"

2573

.format(client_name,

2574

client["last_checker_status"]))

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

2575

3154

client["enabled"] = False

2576

3155

else:

2577

client["expires"] = (datetime.datetime

2578

.utcnow()

2579

+ client["timeout"])

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

2580

3159

logger.debug("Last checker succeeded,"

2581

" keeping {0} enabled"

2582

.format(client_name))

3160

" keeping {} enabled".format(

3161

client_name))

2583

3162

try:

2584

client["secret"] = (

2585

pgp.decrypt(client["encrypted_secret"],

2586

client_settings[client_name]

2587

["secret"]))

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

2588

3166

except PGPError:

2589

3167

# If decryption fails, we use secret from new settings

2590

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

2591

.format(client_name))

2592

client["secret"] = (

2593

client_settings[client_name]["secret"])

3168

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

3169

client_name))

3170

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

3171

["secret"])

2594

3172

2595

3173

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

2596

3174

for client_name in (set(old_client_settings)

2601

3179

clients_data[client_name] = client_settings[client_name]

2602

3180

2603

3181

# Create all client objects

2604

for client_name, client in clients_data.iteritems():

3182

for client_name, client in clients_data.items():

2605

3183

tcp_server.clients[client_name] = client_class(

2606

name = client_name, settings = client)

3184

name = client_name,

3185

settings = client,

3186

server_settings = server_settings)

2607

3187

2608

3188

if not tcp_server.clients:

2609

3189

logger.warning("No clients defined")

2610

3190

2611

3191

if not foreground:

2612

3192

if pidfile is not None:

3193

pid = os.getpid()

2613

3194

try:

2614

3195

with pidfile:

2615

pid = os.getpid()

2616

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

3196

print(pid, file=pidfile)

2617

3197

except IOError:

2618

3198

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

2619

3199

pidfilename, pid)

2620

3200

del pidfile

2621

3201

del pidfilename

2622

3202

2623

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

2624

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

3203

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

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2625

3206

2626

3207

if use_dbus:

2627

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

2628

"se.bsnet.fukt.Mandos"})

2629

class MandosDBusService(DBusObjectWithProperties):

3208

3209

@alternate_dbus_interfaces(

3210

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

3211

class MandosDBusService(DBusObjectWithObjectManager):

2630

3212

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

3213

2631

3214

def __init__(self):

2632

3215

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

3216

2633

3217

_interface = "se.recompile.Mandos"

2634

3218

2635

@dbus_interface_annotations(_interface)

2636

def _foo(self):

2637

return { "org.freedesktop.DBus.Property"

2638

".EmitsChangedSignal":

2639

"false"}

2640

2641

3219

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

2642

3220

def ClientAdded(self, objpath):

2643

3221

"D-Bus signal"

2648

3226

"D-Bus signal"

2649

3227

pass

2650

3228

3229

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

3230

"true"})

2651

3231

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

2652

3232

def ClientRemoved(self, objpath, name):

2653

3233

"D-Bus signal"

2654

3234

pass

2655

3235

3236

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

3237

"true"})

2656

3238

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

2657

3239

def GetAllClients(self):

2658

3240

"D-Bus method"

2659

return dbus.Array(c.dbus_object_path

2660

for c in

2661

tcp_server.clients.itervalues())

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2662

3243

3244

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

3245

"true"})

2663

3246

@dbus.service.method(_interface,

2664

3247

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

2665

3248

def GetAllClientsWithProperties(self):

2666

3249

"D-Bus method"

2667

3250

return dbus.Dictionary(

2668

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

2669

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

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2670

3254

signature="oa{sv}")

2671

3255

2672

3256

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

2673

3257

def RemoveClient(self, object_path):

2674

3258

"D-Bus method"

2675

for c in tcp_server.clients.itervalues():

3259

for c in tcp_server.clients.values():

2676

3260

if c.dbus_object_path == object_path:

2677

3261

del tcp_server.clients[c.name]

2678

3262

c.remove_from_connection()

2679

# Don't signal anything except ClientRemoved

3263

# Don't signal the disabling

2680

3264

c.disable(quiet=True)

2681

# Emit D-Bus signal

2682

self.ClientRemoved(object_path, c.name)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2683

3267

return

2684

3268

raise KeyError(object_path)

2685

3269

2686

3270

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

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

3283

3284

def client_added_signal(self, client):

3285

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

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

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

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

2687

3307

2688

3308

mandos_dbus_service = MandosDBusService()

2689

3309

2690

3310

def cleanup():

2691

3311

"Cleanup function; run on exit"

2692

service.cleanup()

3312

if zeroconf:

3313

service.cleanup()

2693

3314

2694

3315

multiprocessing.active_children()

3316

wnull.close()

2695

3317

if not (tcp_server.clients or client_settings):

2696

3318

return

2697

3319

2700

3322

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

2701

3323

clients = {}

2702

3324

with PGPEngine() as pgp:

2703

for client in tcp_server.clients.itervalues():

3325

for client in tcp_server.clients.values():

2704

3326

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

2705

3327

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

2706

3328

key)

2708

3330

2709

3331

# A list of attributes that can not be pickled

2710

3332

# + secret.

2711

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

2712

"checker"))

2713

for name, typ in (inspect.getmembers

2714

(dbus.service.Object)):

3333

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

3334

"checker", "server_settings" }

3335

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

3336

.Object):

2715

3337

exclude.add(name)

2716

3338

2717

3339

client_dict["encrypted_secret"] = (client

2724

3346

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

2725

3347

2726

3348

try:

2727

with (tempfile.NamedTemporaryFile

2728

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

2729

dir=os.path.dirname(stored_state_path),

2730

delete=False)) as stored_state:

2731

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

2732

tempname=stored_state.name

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

2733

3358

os.rename(tempname, stored_state_path)

2734

3359

except (IOError, OSError) as e:

2735

3360

if not debug:

2738

3363

except NameError:

2739

3364

pass

2740

3365

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

2741

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

3366

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

2742

3367

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

2743

3368

else:

2744

3369

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

2745

3370

exc_info=e)

2746

raise e

3371

raise

2747

3372

2748

3373

# Delete all clients, and settings from config

2749

3374

while tcp_server.clients:

2750

3375

name, client = tcp_server.clients.popitem()

2751

3376

if use_dbus:

2752

3377

client.remove_from_connection()

2753

# Don't signal anything except ClientRemoved

3378

# Don't signal the disabling

2754

3379

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

2755

3381

if use_dbus:

2756

# Emit D-Bus signal

2757

mandos_dbus_service.ClientRemoved(client

2758

.dbus_object_path,

2759

client.name)

3382

mandos_dbus_service.client_removed_signal(client)

2760

3383

client_settings.clear()

2761

3384

2762

3385

atexit.register(cleanup)

2763

3386

2764

for client in tcp_server.clients.itervalues():

3387

for client in tcp_server.clients.values():

2765

3388

if use_dbus:

2766

# Emit D-Bus signal

2767

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

2768

3391

# Need to initiate checking of clients

2769

3392

if client.enabled:

2770

3393

client.init_checker()

2773

3396

tcp_server.server_activate()

2774

3397

2775

3398

# Find out what port we got

2776

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

3399

if zeroconf:

3400

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

2777

3401

if use_ipv6:

2778

3402

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

2779

3403

" flowinfo %d, scope_id %d",

2785

3409

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

2786

3410

2787

3411

try:

2788

# From the Avahi example code

2789

try:

2790

service.activate()

2791

except dbus.exceptions.DBusException as error:

2792

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

2793

cleanup()

2794

sys.exit(1)

2795

# End of Avahi example code

3412

if zeroconf:

3413

# From the Avahi example code

3414

try:

3415

service.activate()

3416

except dbus.exceptions.DBusException as error:

3417

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

3418

cleanup()

3419

sys.exit(1)

3420

# End of Avahi example code

2796

3421

2797

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

2798

lambda *args, **kwargs:

2799

(tcp_server.handle_request

2800

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

3422

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

3423

lambda *args, **kwargs:

3424

(tcp_server.handle_request

3425

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

2801

3426

2802

3427

logger.debug("Starting main loop")

2803

3428

main_loop.run()

2813

3438

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

2814

3439

cleanup()

2815

3440

3441

2816

3442

if __name__ == '__main__':

2817

3443

main()