/mandos/release : revision 237.11.13

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

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

18

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

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

try:

38

from future_builtins import *

39

except ImportError:

40

pass

41

42

try:

43

import SocketServer as socketserver

44

except ImportError:

45

import socketserver

37

import SocketServer as socketserver

46

38

import socket

47

39

import argparse

48

40

import datetime

49

41

import errno

50

try:

51

import ConfigParser as configparser

52

except ImportError:

53

import configparser

42

import gnutls.crypto

43

import gnutls.connection

44

import gnutls.errors

45

import gnutls.library.functions

46

import gnutls.library.constants

47

import gnutls.library.types

48

import ConfigParser as configparser

54

49

import sys

55

50

import re

56

51

import os

65

60

import struct

66

61

import fcntl

67

62

import functools

68

try:

69

import cPickle as pickle

70

except ImportError:

71

import pickle

63

import cPickle as pickle

72

64

import multiprocessing

73

65

import types

74

import binascii

75

import tempfile

76

import itertools

77

import collections

78

import codecs

79

66

80

67

import dbus

81

68

import dbus.service

82

from gi.repository import GLib

69

import gobject

70

import avahi

83

71

from dbus.mainloop.glib import DBusGMainLoop

84

72

import ctypes

85

73

import ctypes.util

94

82

except ImportError:

95

83

SO_BINDTODEVICE = None

96

84

97

if sys.version_info.major == 2:

98

str = unicode

99

100

version = "1.7.7"

101

stored_state_file = "clients.pickle"

102

103

logger = logging.getLogger()

104

syslogger = None

105

106

try:

107

if_nametoindex = ctypes.cdll.LoadLibrary(

108

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

109

except (OSError, AttributeError):

110

111

def if_nametoindex(interface):

112

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

113

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

114

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

115

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

116

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

117

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

118

return interface_index

119

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

137

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

138

"""init logger and add loglevel"""

139

140

global syslogger

141

syslogger = (logging.handlers.SysLogHandler(

142

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

143

address = "/dev/log"))

144

syslogger.setFormatter(logging.Formatter

145

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

146

' %(message)s'))

147

logger.addHandler(syslogger)

148

149

if debug:

150

console = logging.StreamHandler()

151

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

152

' [%(process)d]:'

153

' %(levelname)s:'

154

' %(message)s'))

155

logger.addHandler(console)

156

logger.setLevel(level)

157

158

159

class PGPError(Exception):

160

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

161

pass

162

163

164

class PGPEngine(object):

165

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

166

167

def __init__(self):

168

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

169

self.gpg = "gpg"

170

try:

171

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

172

for line in output.splitlines():

173

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

174

if name == "gpg":

175

self.gpg = path

176

break

177

except OSError as e:

178

if e.errno != errno.ENOENT:

179

raise

180

self.gnupgargs = ['--batch',

181

'--homedir', self.tempdir,

182

'--force-mdc',

183

'--quiet',

184

'--no-use-agent']

185

186

def __enter__(self):

187

return self

188

189

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

190

self._cleanup()

191

return False

192

193

def __del__(self):

194

self._cleanup()

195

196

def _cleanup(self):

197

if self.tempdir is not None:

198

# Delete contents of tempdir

199

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

200

topdown = False):

201

for filename in files:

202

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

203

for dirname in dirs:

204

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

205

# Remove tempdir

206

os.rmdir(self.tempdir)

207

self.tempdir = None

208

209

def password_encode(self, password):

210

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

211

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

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

219

220

def encrypt(self, data, password):

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)

236

return ciphertext

237

238

def decrypt(self, data, password):

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)

254

return decrypted_plaintext

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()

85

86

version = "1.4.0"

87

88

#logger = logging.getLogger('mandos')

89

logger = logging.Logger('mandos')

90

syslogger = (logging.handlers.SysLogHandler

91

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

92

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

93

syslogger.setFormatter(logging.Formatter

94

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

95

' %(message)s'))

96

logger.addHandler(syslogger)

97

98

console = logging.StreamHandler()

99

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

100

' %(levelname)s:'

101

' %(message)s'))

102

logger.addHandler(console)

280

103

281

104

class AvahiError(Exception):

282

105

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

283

106

self.value = value

284

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

285

**kwargs)

286

107

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

108

def __unicode__(self):

109

return unicode(repr(self.value))

287

110

288

111

class AvahiServiceError(AvahiError):

289

112

pass

290

113

291

292

114

class AvahiGroupError(AvahiError):

293

115

pass

294

116

301

123

Used to optionally bind to the specified interface.

302

124

name: string; Example: 'Mandos'

303

125

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

304

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

126

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

305

127

port: integer; what port to announce

306

128

TXT: list of strings; TXT record for the service

307

129

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

313

135

server: D-Bus Server

314

136

bus: dbus.SystemBus()

315

137

"""

316

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):

138

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

139

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

140

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

141

protocol = avahi.PROTO_UNSPEC, bus = None):

328

142

self.interface = interface

329

143

self.name = name

330

144

self.type = servicetype

339

153

self.server = None

340

154

self.bus = bus

341

155

self.entry_group_state_changed_match = None

342

343

def rename(self, remove=True):

156

def rename(self):

344

157

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

345

158

if self.rename_count >= self.max_renames:

346

159

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

347

160

" after %i retries, exiting.",

348

161

self.rename_count)

349

162

raise AvahiServiceError("Too many renames")

350

self.name = str(

351

self.server.GetAlternativeServiceName(self.name))

352

self.rename_count += 1

163

self.name = unicode(self.server

164

.GetAlternativeServiceName(self.name))

353

165

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

354

166

self.name)

355

if remove:

356

self.remove()

167

syslogger.setFormatter(logging.Formatter

168

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

169

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

170

% self.name))

171

self.remove()

357

172

try:

358

173

self.add()

359

174

except dbus.exceptions.DBusException as error:

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)

368

175

logger.critical("DBusException: %s", error)

176

self.cleanup()

177

os._exit(1)

178

self.rename_count += 1

369

179

def remove(self):

370

180

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

371

181

if self.entry_group_state_changed_match is not None:

373

183

self.entry_group_state_changed_match = None

374

184

if self.group is not None:

375

185

self.group.Reset()

376

377

186

def add(self):

378

187

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

379

188

self.remove()

384

193

avahi.DBUS_INTERFACE_ENTRY_GROUP)

385

194

self.entry_group_state_changed_match = (

386

195

self.group.connect_to_signal(

387

'StateChanged', self.entry_group_state_changed))

196

'StateChanged', self .entry_group_state_changed))

388

197

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

389

198

self.name, self.type)

390

199

self.group.AddService(

396

205

dbus.UInt16(self.port),

397

206

avahi.string_array_to_txt_array(self.TXT))

398

207

self.group.Commit()

399

400

208

def entry_group_state_changed(self, state, error):

401

209

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

402

210

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

408

216

self.rename()

409

217

elif state == avahi.ENTRY_GROUP_FAILURE:

410

218

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

411

str(error))

412

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

413

219

unicode(error))

220

raise AvahiGroupError("State changed: %s"

221

% unicode(error))

414

222

def cleanup(self):

415

223

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

416

224

if self.group is not None:

417

225

try:

418

226

self.group.Free()

419

227

except (dbus.exceptions.UnknownMethodException,

420

dbus.exceptions.DBusException):

228

dbus.exceptions.DBusException) as e:

421

229

pass

422

230

self.group = None

423

231

self.remove()

424

425

232

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

426

233

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

427

234

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

428

bad_states = {

429

avahi.SERVER_INVALID: "Zeroconf server invalid",

430

avahi.SERVER_REGISTERING: None,

431

avahi.SERVER_COLLISION: "Zeroconf server name collision",

432

avahi.SERVER_FAILURE: "Zeroconf server failure",

433

}

235

bad_states = { avahi.SERVER_INVALID:

236

"Zeroconf server invalid",

237

avahi.SERVER_REGISTERING: None,

238

avahi.SERVER_COLLISION:

239

"Zeroconf server name collision",

240

avahi.SERVER_FAILURE:

241

"Zeroconf server failure" }

434

242

if state in bad_states:

435

243

if bad_states[state] is not None:

436

244

if error is None:

439

247

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

440

248

self.cleanup()

441

249

elif state == avahi.SERVER_RUNNING:

442

try:

443

self.add()

444

except dbus.exceptions.DBusException as error:

445

if (error.get_dbus_name()

446

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

447

logger.info("Local Zeroconf service name"

448

" collision.")

449

return self.rename(remove=False)

450

else:

451

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

452

self.cleanup()

453

os._exit(1)

250

self.add()

454

251

else:

455

252

if error is None:

456

253

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

457

254

else:

458

255

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

459

460

256

def activate(self):

461

257

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

462

258

if self.server is None:

466

262

follow_name_owner_changes=True),

467

263

avahi.DBUS_INTERFACE_SERVER)

468

264

self.server.connect_to_signal("StateChanged",

469

self.server_state_changed)

265

self.server_state_changed)

470

266

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

471

267

472

268

473

class AvahiServiceToSyslog(AvahiService):

474

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

475

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

476

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

477

syslogger.setFormatter(logging.Formatter(

478

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

479

.format(self.name)))

480

return ret

481

482

# Pretend that we have a GnuTLS module

483

class GnuTLS(object):

484

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

485

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

486

487

_library = ctypes.cdll.LoadLibrary(

488

ctypes.util.find_library("gnutls"))

489

_need_version = b"3.3.0"

490

def __init__(self):

491

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

492

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

493

# happens.

494

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

495

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

496

.format(self._need_version))

497

498

# Unless otherwise indicated, the constants and types below are

499

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

500

501

# Constants

502

E_SUCCESS = 0

503

E_INTERRUPTED = -52

504

E_AGAIN = -28

505

CRT_OPENPGP = 2

506

CLIENT = 2

507

SHUT_RDWR = 0

508

CRD_CERTIFICATE = 1

509

E_NO_CERTIFICATE_FOUND = -49

510

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

511

512

# Types

513

class session_int(ctypes.Structure):

514

_fields_ = []

515

session_t = ctypes.POINTER(session_int)

516

class certificate_credentials_st(ctypes.Structure):

517

_fields_ = []

518

certificate_credentials_t = ctypes.POINTER(

519

certificate_credentials_st)

520

certificate_type_t = ctypes.c_int

521

class datum_t(ctypes.Structure):

522

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

523

('size', ctypes.c_uint)]

524

class openpgp_crt_int(ctypes.Structure):

525

_fields_ = []

526

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

527

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

528

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

529

credentials_type_t = ctypes.c_int

530

transport_ptr_t = ctypes.c_void_p

531

close_request_t = ctypes.c_int

532

533

# Exceptions

534

class Error(Exception):

535

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

536

# exception might be raised from within GnuTLS.__init__,

537

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

538

# global variable has happened.

539

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

540

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

541

# code is passed, convert it to a string with

542

# gnutls.strerror()

543

self.code = code

544

if message is None and code is not None:

545

message = GnuTLS.strerror(code)

546

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

547

message, *args)

548

549

class CertificateSecurityError(Error):

550

pass

551

552

# Classes

553

class Credentials(object):

554

def __init__(self):

555

self._c_object = gnutls.certificate_credentials_t()

556

gnutls.certificate_allocate_credentials(

557

ctypes.byref(self._c_object))

558

self.type = gnutls.CRD_CERTIFICATE

559

560

def __del__(self):

561

gnutls.certificate_free_credentials(self._c_object)

562

563

class ClientSession(object):

564

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

565

self._c_object = gnutls.session_t()

566

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

567

gnutls.set_default_priority(self._c_object)

568

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

569

gnutls.handshake_set_private_extensions(self._c_object,

570

True)

571

self.socket = socket

572

if credentials is None:

573

credentials = gnutls.Credentials()

574

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

575

ctypes.cast(credentials._c_object,

576

ctypes.c_void_p))

577

self.credentials = credentials

578

579

def __del__(self):

580

gnutls.deinit(self._c_object)

581

582

def handshake(self):

583

return gnutls.handshake(self._c_object)

584

585

def send(self, data):

586

data = bytes(data)

587

data_len = len(data)

588

while data_len > 0:

589

data_len -= gnutls.record_send(self._c_object,

590

data[-data_len:],

591

data_len)

592

593

def bye(self):

594

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

595

596

# Error handling functions

597

def _error_code(result):

598

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

599

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

600

if result >= 0:

601

return result

602

if result == gnutls.E_NO_CERTIFICATE_FOUND:

603

raise gnutls.CertificateSecurityError(code = result)

604

raise gnutls.Error(code = result)

605

606

def _retry_on_error(result, func, arguments):

607

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

608

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

609

while result < 0:

610

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

611

return _error_code(result)

612

result = func(*arguments)

613

return result

614

615

# Unless otherwise indicated, the function declarations below are

616

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

617

618

# Functions

619

priority_set_direct = _library.gnutls_priority_set_direct

620

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

621

ctypes.POINTER(ctypes.c_char_p)]

622

priority_set_direct.restype = _error_code

623

624

init = _library.gnutls_init

625

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

626

init.restype = _error_code

627

628

set_default_priority = _library.gnutls_set_default_priority

629

set_default_priority.argtypes = [session_t]

630

set_default_priority.restype = _error_code

631

632

record_send = _library.gnutls_record_send

633

record_send.argtypes = [session_t, ctypes.c_void_p,

634

ctypes.c_size_t]

635

record_send.restype = ctypes.c_ssize_t

636

record_send.errcheck = _retry_on_error

637

638

certificate_allocate_credentials = (

639

_library.gnutls_certificate_allocate_credentials)

640

certificate_allocate_credentials.argtypes = [

641

ctypes.POINTER(certificate_credentials_t)]

642

certificate_allocate_credentials.restype = _error_code

643

644

certificate_free_credentials = (

645

_library.gnutls_certificate_free_credentials)

646

certificate_free_credentials.argtypes = [certificate_credentials_t]

647

certificate_free_credentials.restype = None

648

649

handshake_set_private_extensions = (

650

_library.gnutls_handshake_set_private_extensions)

651

handshake_set_private_extensions.argtypes = [session_t,

652

ctypes.c_int]

653

handshake_set_private_extensions.restype = None

654

655

credentials_set = _library.gnutls_credentials_set

656

credentials_set.argtypes = [session_t, credentials_type_t,

657

ctypes.c_void_p]

658

credentials_set.restype = _error_code

659

660

strerror = _library.gnutls_strerror

661

strerror.argtypes = [ctypes.c_int]

662

strerror.restype = ctypes.c_char_p

663

664

certificate_type_get = _library.gnutls_certificate_type_get

665

certificate_type_get.argtypes = [session_t]

666

certificate_type_get.restype = _error_code

667

668

certificate_get_peers = _library.gnutls_certificate_get_peers

669

certificate_get_peers.argtypes = [session_t,

670

ctypes.POINTER(ctypes.c_uint)]

671

certificate_get_peers.restype = ctypes.POINTER(datum_t)

672

673

global_set_log_level = _library.gnutls_global_set_log_level

674

global_set_log_level.argtypes = [ctypes.c_int]

675

global_set_log_level.restype = None

676

677

global_set_log_function = _library.gnutls_global_set_log_function

678

global_set_log_function.argtypes = [log_func]

679

global_set_log_function.restype = None

680

681

deinit = _library.gnutls_deinit

682

deinit.argtypes = [session_t]

683

deinit.restype = None

684

685

handshake = _library.gnutls_handshake

686

handshake.argtypes = [session_t]

687

handshake.restype = _error_code

688

handshake.errcheck = _retry_on_error

689

690

transport_set_ptr = _library.gnutls_transport_set_ptr

691

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

692

transport_set_ptr.restype = None

693

694

bye = _library.gnutls_bye

695

bye.argtypes = [session_t, close_request_t]

696

bye.restype = _error_code

697

bye.errcheck = _retry_on_error

698

699

check_version = _library.gnutls_check_version

700

check_version.argtypes = [ctypes.c_char_p]

701

check_version.restype = ctypes.c_char_p

702

703

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

704

705

openpgp_crt_init = _library.gnutls_openpgp_crt_init

706

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

707

openpgp_crt_init.restype = _error_code

708

709

openpgp_crt_import = _library.gnutls_openpgp_crt_import

710

openpgp_crt_import.argtypes = [openpgp_crt_t,

711

ctypes.POINTER(datum_t),

712

openpgp_crt_fmt_t]

713

openpgp_crt_import.restype = _error_code

714

715

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

716

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

717

ctypes.POINTER(ctypes.c_uint)]

718

openpgp_crt_verify_self.restype = _error_code

719

720

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

721

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

722

openpgp_crt_deinit.restype = None

723

724

openpgp_crt_get_fingerprint = (

725

_library.gnutls_openpgp_crt_get_fingerprint)

726

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

727

ctypes.c_void_p,

728

ctypes.POINTER(

729

ctypes.c_size_t)]

730

openpgp_crt_get_fingerprint.restype = _error_code

731

732

# Remove non-public functions

733

del _error_code, _retry_on_error

734

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

735

gnutls = GnuTLS()

736

737

def call_pipe(connection, # : multiprocessing.Connection

738

func, *args, **kwargs):

739

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

740

741

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

742

return value on the provided multiprocessing.Connection.

743

"""

744

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

745

connection.close()

746

269

def _timedelta_to_milliseconds(td):

270

"Convert a datetime.timedelta() to milliseconds"

271

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

272

+ (td.seconds * 1000)

273

+ (td.microseconds // 1000))

274

747

275

class Client(object):

748

276

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

749

277

750

278

Attributes:

751

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

279

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

752

280

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

753

281

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

754

282

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

755

283

to see if the client lives.

756

284

'None' if no process is running.

757

checker_callback_tag: a GLib event source tag, or None

285

checker_callback_tag: a gobject event source tag, or None

758

286

checker_command: string; External command which is run to check

759

287

if client lives. %() expansions are done at

760

288

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

761

289

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

762

checker_initiator_tag: a GLib event source tag, or None

290

checker_initiator_tag: a gobject event source tag, or None

763

291

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

764

client_structure: Object describing what attributes a client has

765

and is used for storing the client at exit

766

292

current_checker_command: string; current running checker_command

767

disable_initiator_tag: a GLib event source tag, or None

293

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

294

disable_initiator_tag: a gobject event source tag, or None

768

295

enabled: bool()

769

296

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

770

297

uniquely identify the client

772

299

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

773

300

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

774

301

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

775

last_checker_status: integer between 0 and 255 reflecting exit

776

status of last checker. -1 reflects crashed

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

780

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

302

last_enabled: datetime.datetime(); (UTC)

781

303

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

782

304

D-Bus identifiers

783

305

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

784

306

timeout: datetime.timedelta(); How long from last_checked_ok

785

307

until this client is disabled

786

extended_timeout: extra long timeout when secret has been sent

308

extended_timeout: extra long timeout when password has been sent

787

309

runtime_expansions: Allowed attributes for runtime expansion.

788

310

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

789

311

disabled, or None

790

server_settings: The server_settings dict from main()

791

312

"""

792

313

793

314

runtime_expansions = ("approval_delay", "approval_duration",

794

"created", "enabled", "expires",

795

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

796

"last_approval_request", "last_checked_ok",

315

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

316

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

797

317

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

798

client_defaults = {

799

"timeout": "PT5M",

800

"extended_timeout": "PT15M",

801

"interval": "PT2M",

802

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

803

"host": "",

804

"approval_delay": "PT0S",

805

"approval_duration": "PT1S",

806

"approved_by_default": "True",

807

"enabled": "True",

808

}

809

810

@staticmethod

811

def config_parser(config):

812

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

813

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

814

with exceptions for any special settings as defined above.

815

NOTE: Must be a pure function. Must return the same result

816

value given the same arguments.

817

"""

818

settings = {}

819

for client_name in config.sections():

820

section = dict(config.items(client_name))

821

client = settings[client_name] = {}

822

823

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

824

# Reformat values from string types to Python types

825

client["approved_by_default"] = config.getboolean(

826

client_name, "approved_by_default")

827

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

828

"enabled")

829

830

# Uppercase and remove spaces from fingerprint for later

831

# comparison purposes with return value from the

832

# fingerprint() function

833

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

834

.replace(" ", ""))

835

if "secret" in section:

836

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

837

.encode("utf-8"),

838

"base64")

839

elif "secfile" in section:

840

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

841

(section["secfile"])),

842

"rb") as secfile:

843

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

844

else:

845

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

846

.format(section))

847

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

848

client["extended_timeout"] = string_to_delta(

849

section["extended_timeout"])

850

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

851

client["approval_delay"] = string_to_delta(

852

section["approval_delay"])

853

client["approval_duration"] = string_to_delta(

854

section["approval_duration"])

855

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

856

client["last_approval_request"] = None

857

client["last_checked_ok"] = None

858

client["last_checker_status"] = -2

859

860

return settings

861

862

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

318

319

def timeout_milliseconds(self):

320

"Return the 'timeout' attribute in milliseconds"

321

return _timedelta_to_milliseconds(self.timeout)

322

323

def extended_timeout_milliseconds(self):

324

"Return the 'extended_timeout' attribute in milliseconds"

325

return _timedelta_to_milliseconds(self.extended_timeout)

326

327

def interval_milliseconds(self):

328

"Return the 'interval' attribute in milliseconds"

329

return _timedelta_to_milliseconds(self.interval)

330

331

def approval_delay_milliseconds(self):

332

return _timedelta_to_milliseconds(self.approval_delay)

333

334

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

335

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

336

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

337

attribute."""

863

338

self.name = name

864

if server_settings is None:

865

server_settings = {}

866

self.server_settings = server_settings

867

# adding all client settings

868

for setting, value in settings.items():

869

setattr(self, setting, value)

870

871

if self.enabled:

872

if not hasattr(self, "last_enabled"):

873

self.last_enabled = datetime.datetime.utcnow()

874

if not hasattr(self, "expires"):

875

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

876

+ self.timeout)

877

else:

878

self.last_enabled = None

879

self.expires = None

880

339

if config is None:

340

config = {}

881

341

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

342

# Uppercase and remove spaces from fingerprint for later

343

# comparison purposes with return value from the fingerprint()

344

# function

345

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

346

.replace(" ", ""))

882

347

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

883

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

884

datetime.datetime.utcnow())

885

886

# attributes specific for this server instance

348

if "secret" in config:

349

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

350

elif "secfile" in config:

351

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

352

(config["secfile"])),

353

"rb") as secfile:

354

self.secret = secfile.read()

355

else:

356

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

357

% self.name)

358

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

359

self.created = datetime.datetime.utcnow()

360

self.enabled = False

361

self.last_approval_request = None

362

self.last_enabled = None

363

self.last_checked_ok = None

364

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

365

self.extended_timeout = string_to_delta(config

366

["extended_timeout"])

367

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

368

self.disable_hook = disable_hook

887

369

self.checker = None

888

370

self.checker_initiator_tag = None

889

371

self.disable_initiator_tag = None

372

self.expires = None

890

373

self.checker_callback_tag = None

374

self.checker_command = config["checker"]

891

375

self.current_checker_command = None

892

self.approved = None

376

self.last_connect = None

377

self._approved = None

378

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

379

True)

893

380

self.approvals_pending = 0

894

self.changedstate = multiprocessing_manager.Condition(

895

multiprocessing_manager.Lock())

896

self.client_structure = [attr

897

for attr in self.__dict__.keys()

898

if not attr.startswith("_")]

899

self.client_structure.append("client_structure")

900

901

for name, t in inspect.getmembers(

902

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

903

if not name.startswith("_"):

904

self.client_structure.append(name)

381

self.approval_delay = string_to_delta(

382

config["approval_delay"])

383

self.approval_duration = string_to_delta(

384

config["approval_duration"])

385

self.changedstate = (multiprocessing_manager

386

.Condition(multiprocessing_manager

387

.Lock()))

905

388

906

# Send notice to process children that client state has changed

907

389

def send_changedstate(self):

908

with self.changedstate:

909

self.changedstate.notify_all()

390

self.changedstate.acquire()

391

self.changedstate.notify_all()

392

self.changedstate.release()

910

393

911

394

def enable(self):

912

395

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

913

396

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

914

397

# Already enabled

915

398

return

399

self.send_changedstate()

400

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

401

# and every interval from then on.

402

self.checker_initiator_tag = (gobject.timeout_add

403

(self.interval_milliseconds(),

404

self.start_checker))

405

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

916

406

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

407

self.disable_initiator_tag = (gobject.timeout_add

408

(self.timeout_milliseconds(),

409

self.disable))

917

410

self.enabled = True

918

411

self.last_enabled = datetime.datetime.utcnow()

919

self.init_checker()

920

self.send_changedstate()

412

# Also start a new checker *right now*.

413

self.start_checker()

921

414

922

415

def disable(self, quiet=True):

923

416

"""Disable this client."""

924

417

if not getattr(self, "enabled", False):

925

418

return False

926

419

if not quiet:

420

self.send_changedstate()

421

if not quiet:

927

422

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

928

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

929

GLib.source_remove(self.disable_initiator_tag)

423

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

424

gobject.source_remove(self.disable_initiator_tag)

930

425

self.disable_initiator_tag = None

931

426

self.expires = None

932

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

933

GLib.source_remove(self.checker_initiator_tag)

427

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

428

gobject.source_remove(self.checker_initiator_tag)

934

429

self.checker_initiator_tag = None

935

430

self.stop_checker()

431

if self.disable_hook:

432

self.disable_hook(self)

936

433

self.enabled = False

937

if not quiet:

938

self.send_changedstate()

939

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

434

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

940

435

return False

941

436

942

437

def __del__(self):

438

self.disable_hook = None

943

439

self.disable()

944

440

945

def init_checker(self):

946

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

947

# and every interval from then on.

948

if self.checker_initiator_tag is not None:

949

GLib.source_remove(self.checker_initiator_tag)

950

self.checker_initiator_tag = GLib.timeout_add(

951

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

952

self.start_checker)

953

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

954

if self.disable_initiator_tag is not None:

955

GLib.source_remove(self.disable_initiator_tag)

956

self.disable_initiator_tag = GLib.timeout_add(

957

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

958

# Also start a new checker *right now*.

959

self.start_checker()

960

961

def checker_callback(self, source, condition, connection,

962

command):

441

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

963

442

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

964

443

self.checker_callback_tag = None

965

444

self.checker = None

966

# Read return code from connection (see call_pipe)

967

returncode = connection.recv()

968

connection.close()

969

970

if returncode >= 0:

971

self.last_checker_status = returncode

972

self.last_checker_signal = None

973

if self.last_checker_status == 0:

445

if os.WIFEXITED(condition):

446

exitstatus = os.WEXITSTATUS(condition)

447

if exitstatus == 0:

974

448

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

975

449

vars(self))

976

450

self.checked_ok()

977

451

else:

978

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

452

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

453

vars(self))

979

454

else:

980

self.last_checker_status = -1

981

self.last_checker_signal = -returncode

982

455

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

983

456

vars(self))

984

return False

985

986

def checked_ok(self):

987

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

988

self.last_checked_ok = datetime.datetime.utcnow()

989

self.last_checker_status = 0

990

self.last_checker_signal = None

991

self.bump_timeout()

992

993

def bump_timeout(self, timeout=None):

994

"""Bump up the timeout for this client."""

457

458

def checked_ok(self, timeout=None):

459

"""Bump up the timeout for this client.

460

461

This should only be called when the client has been seen,

462

alive and well.

463

"""

995

464

if timeout is None:

996

465

timeout = self.timeout

997

if self.disable_initiator_tag is not None:

998

GLib.source_remove(self.disable_initiator_tag)

999

self.disable_initiator_tag = None

1000

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

1001

self.disable_initiator_tag = GLib.timeout_add(

1002

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

1003

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

466

self.last_checked_ok = datetime.datetime.utcnow()

467

gobject.source_remove(self.disable_initiator_tag)

468

self.disable_initiator_tag = (gobject.timeout_add

469

(_timedelta_to_milliseconds

470

(timeout), self.disable))

471

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

1004

472

1005

473

def need_approval(self):

1006

474

self.last_approval_request = datetime.datetime.utcnow()

1011

479

If a checker already exists, leave it running and do

1012

480

nothing."""

1013

481

# The reason for not killing a running checker is that if we

1014

# did that, and if a checker (for some reason) started running

1015

# slowly and taking more than 'interval' time, then the client

1016

# would inevitably timeout, since no checker would get a

1017

# chance to run to completion. If we instead leave running

482

# did that, then if a checker (for some reason) started

483

# running slowly and taking more than 'interval' time, the

484

# client would inevitably timeout, since no checker would get

485

# a chance to run to completion. If we instead leave running

1018

486

# checkers alone, the checker would have to take more time

1019

487

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

1020

488

# should be.

1021

489

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

490

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

491

try:

492

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

493

except (AttributeError, OSError) as error:

494

if (isinstance(error, OSError)

495

and error.errno != errno.ECHILD):

496

raise error

497

else:

498

if pid:

499

logger.warning("Checker was a zombie")

500

gobject.source_remove(self.checker_callback_tag)

501

self.checker_callback(pid, status,

502

self.current_checker_command)

1026

503

# Start a new checker if needed

1027

504

if self.checker is None:

1028

# Escape attributes for the shell

1029

escaped_attrs = {

1030

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

1031

for attr in self.runtime_expansions }

1032

505

try:

1033

command = self.checker_command % escaped_attrs

1034

except TypeError as error:

1035

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

1036

self.checker_command,

1037

exc_info=error)

1038

return True # Try again later

506

# In case checker_command has exactly one % operator

507

command = self.checker_command % self.host

508

except TypeError:

509

# Escape attributes for the shell

510

escaped_attrs = dict(

511

(attr,

512

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

513

errors=

514

'replace')))

515

for attr in

516

self.runtime_expansions)

517

518

try:

519

command = self.checker_command % escaped_attrs

520

except TypeError as error:

521

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

522

' %s', self.checker_command, error)

523

return True # Try again later

1039

524

self.current_checker_command = command

1040

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

1041

self.name)

1042

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

1043

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

1044

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

1045

# always replaced by /dev/null.)

1046

# The exception is when not debugging but nevertheless

1047

# running in the foreground; use the previously

1048

# created wnull.

1049

popen_args = { "close_fds": True,

1050

"shell": True,

1051

"cwd": "/" }

1052

if (not self.server_settings["debug"]

1053

and self.server_settings["foreground"]):

1054

popen_args.update({"stdout": wnull,

1055

"stderr": wnull })

1056

pipe = multiprocessing.Pipe(duplex = False)

1057

self.checker = multiprocessing.Process(

1058

target = call_pipe,

1059

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

1060

kwargs = popen_args)

1061

self.checker.start()

1062

self.checker_callback_tag = GLib.io_add_watch(

1063

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

1064

self.checker_callback, pipe[0], command)

1065

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

525

try:

526

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

527

command, self.name)

528

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

529

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

530

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

531

# always replaced by /dev/null.)

532

self.checker = subprocess.Popen(command,

533

close_fds=True,

534

shell=True, cwd="/")

535

self.checker_callback_tag = (gobject.child_watch_add

536

(self.checker.pid,

537

self.checker_callback,

538

data=command))

539

# The checker may have completed before the gobject

540

# watch was added. Check for this.

541

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

542

if pid:

543

gobject.source_remove(self.checker_callback_tag)

544

self.checker_callback(pid, status, command)

545

except OSError as error:

546

logger.error("Failed to start subprocess: %s",

547

error)

548

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

1066

549

return True

1067

550

1068

551

def stop_checker(self):

1069

552

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

1070

553

if self.checker_callback_tag:

1071

GLib.source_remove(self.checker_callback_tag)

554

gobject.source_remove(self.checker_callback_tag)

1072

555

self.checker_callback_tag = None

1073

556

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

1074

557

return

1075

558

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

1076

self.checker.terminate()

559

try:

560

os.kill(self.checker.pid, signal.SIGTERM)

561

#time.sleep(0.5)

562

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

563

# os.kill(self.checker.pid, signal.SIGKILL)

564

except OSError as error:

565

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

566

raise

1077

567

self.checker = None

1078

568

1079

569

1080

def dbus_service_property(dbus_interface,

1081

signature="v",

1082

access="readwrite",

1083

byte_arrays=False):

570

def dbus_service_property(dbus_interface, signature="v",

571

access="readwrite", byte_arrays=False):

1084

572

"""Decorators for marking methods of a DBusObjectWithProperties to

1085

573

become properties on the D-Bus.

1086

574

1095

583

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

1096

584

if byte_arrays and signature != "ay":

1097

585

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

1098

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

1099

586

" signature %r" % signature)

1100

587

def decorator(func):

1101

588

func._dbus_is_property = True

1102

589

func._dbus_interface = dbus_interface

1107

594

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

1108

595

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1109

596

return func

1110

1111

return decorator

1112

1113

1114

def dbus_interface_annotations(dbus_interface):

1115

"""Decorator for marking functions returning interface annotations

1116

1117

Usage:

1118

1119

@dbus_interface_annotations("org.example.Interface")

1120

def _foo(self): # Function name does not matter

1121

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

1122

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

1123

"false"}

1124

"""

1125

1126

def decorator(func):

1127

func._dbus_is_interface = True

1128

func._dbus_interface = dbus_interface

1129

func._dbus_name = dbus_interface

1130

return func

1131

1132

return decorator

1133

1134

1135

def dbus_annotations(annotations):

1136

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

1137

Usage:

1138

1139

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

1140

"org.freedesktop.DBus.Property."

1141

"EmitsChangedSignal": "false"})

1142

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

1143

access="r")

1144

def Property_dbus_property(self):

1145

return dbus.Boolean(False)

1146

1147

See also the DBusObjectWithAnnotations class.

1148

"""

1149

1150

def decorator(func):

1151

func._dbus_annotations = annotations

1152

return func

1153

1154

597

return decorator

1155

598

1156

599

1157

600

class DBusPropertyException(dbus.exceptions.DBusException):

1158

601

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

1159

602

"""

1160

pass

603

def __unicode__(self):

604

return unicode(str(self))

1161

605

1162

606

1163

607

class DBusPropertyAccessException(DBusPropertyException):

1172

616

pass

1173

617

1174

618

1175

class DBusObjectWithAnnotations(dbus.service.Object):

1176

"""A D-Bus object with annotations.

1177

1178

Classes inheriting from this can use the dbus_annotations

1179

decorator to add annotations to methods or signals.

1180

"""

1181

1182

@staticmethod

1183

def _is_dbus_thing(thing):

1184

"""Returns a function testing if an attribute is a D-Bus thing

1185

1186

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

1187

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

1188

"""

1189

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

1190

False)

1191

1192

def _get_all_dbus_things(self, thing):

1193

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

1194

"""

1195

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

1196

athing.__get__(self))

1197

for cls in self.__class__.__mro__

1198

for name, athing in

1199

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

1200

1201

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1202

out_signature = "s",

1203

path_keyword = 'object_path',

1204

connection_keyword = 'connection')

1205

def Introspect(self, object_path, connection):

1206

"""Overloading of standard D-Bus method.

1207

1208

Inserts annotation tags on methods and signals.

1209

"""

1210

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

1211

connection)

1212

try:

1213

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

1214

1215

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

1216

# Add annotation tags

1217

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

1218

for tag in if_tag.getElementsByTagName(typ):

1219

annots = dict()

1220

for name, prop in (self.

1221

_get_all_dbus_things(typ)):

1222

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

1223

and prop._dbus_interface

1224

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

1225

annots.update(getattr(

1226

prop, "_dbus_annotations", {}))

1227

for name, value in annots.items():

1228

ann_tag = document.createElement(

1229

"annotation")

1230

ann_tag.setAttribute("name", name)

1231

ann_tag.setAttribute("value", value)

1232

tag.appendChild(ann_tag)

1233

# Add interface annotation tags

1234

for annotation, value in dict(

1235

itertools.chain.from_iterable(

1236

annotations().items()

1237

for name, annotations

1238

in self._get_all_dbus_things("interface")

1239

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

1240

)).items():

1241

ann_tag = document.createElement("annotation")

1242

ann_tag.setAttribute("name", annotation)

1243

ann_tag.setAttribute("value", value)

1244

if_tag.appendChild(ann_tag)

1245

# Fix argument name for the Introspect method itself

1246

if (if_tag.getAttribute("name")

1247

== dbus.INTROSPECTABLE_IFACE):

1248

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

1249

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

1250

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

1251

if (arg.getAttribute("direction")

1252

== "out"):

1253

arg.setAttribute("name",

1254

"xml_data")

1255

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

1256

document.unlink()

1257

except (AttributeError, xml.dom.DOMException,

1258

xml.parsers.expat.ExpatError) as error:

1259

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

1260

exc_info=error)

1261

return xmlstring

1262

1263

1264

class DBusObjectWithProperties(DBusObjectWithAnnotations):

619

class DBusObjectWithProperties(dbus.service.Object):

1265

620

"""A D-Bus object with properties.

1266

621

1267

622

Classes inheriting from this can use the dbus_service_property

1269

624

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

1270

625

"""

1271

626

627

@staticmethod

628

def _is_dbus_property(obj):

629

return getattr(obj, "_dbus_is_property", False)

630

631

def _get_all_dbus_properties(self):

632

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

633

"""

634

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

635

for cls in self.__class__.__mro__

636

for name, prop in

637

inspect.getmembers(cls, self._is_dbus_property))

638

1272

639

def _get_dbus_property(self, interface_name, property_name):

1273

640

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

1274

641

property with the specified name and interface.

1275

642

"""

1276

for cls in self.__class__.__mro__:

1277

for name, value in inspect.getmembers(

1278

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

643

for cls in self.__class__.__mro__:

644

for name, value in (inspect.getmembers

645

(cls, self._is_dbus_property)):

1279

646

if (value._dbus_name == property_name

1280

647

and value._dbus_interface == interface_name):

1281

648

return value.__get__(self)

1282

649

1283

650

# No such property

1284

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

1285

self.dbus_object_path, interface_name, property_name))

1286

1287

@classmethod

1288

def _get_all_interface_names(cls):

1289

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

1290

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

1291

"_dbus_interface", None)

1292

for x in (inspect.getmro(cls))

1293

for attr in dir(x))

1294

if name is not None)

1295

1296

@dbus.service.method(dbus.PROPERTIES_IFACE,

1297

in_signature="ss",

651

raise DBusPropertyNotFound(self.dbus_object_path + ":"

652

+ interface_name + "."

653

+ property_name)

654

655

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

1298

656

out_signature="v")

1299

657

def Get(self, interface_name, property_name):

1300

658

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

1318

676

# The byte_arrays option is not supported yet on

1319

677

# signatures other than "ay".

1320

678

if prop._dbus_signature != "ay":

1321

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

1322

"'ay' signature {!r}"

1323

.format(prop._dbus_signature))

1324

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

1325

for byte in value))

679

raise ValueError

680

value = dbus.ByteArray(''.join(unichr(byte)

681

for byte in value))

1326

682

prop(value)

1327

683

1328

@dbus.service.method(dbus.PROPERTIES_IFACE,

1329

in_signature="s",

684

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

1330

685

out_signature="a{sv}")

1331

686

def GetAll(self, interface_name):

1332

687

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

1334

689

1335

690

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

1336

691

"""

1337

properties = {}

1338

for name, prop in self._get_all_dbus_things("property"):

692

all = {}

693

for name, prop in self._get_all_dbus_properties():

1339

694

if (interface_name

1340

695

and interface_name != prop._dbus_interface):

1341

696

# Interface non-empty but did not match

1345

700

continue

1346

701

value = prop()

1347

702

if not hasattr(value, "variant_level"):

1348

properties[name] = value

703

all[name] = value

1349

704

continue

1350

properties[name] = type(value)(

1351

value, variant_level = value.variant_level + 1)

1352

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

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

705

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

706

value.variant_level+1)

707

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

1361

708

1362

709

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

710

out_signature="s",

1364

711

path_keyword='object_path',

1365

712

connection_keyword='connection')

1366

713

def Introspect(self, object_path, connection):

1367

"""Overloading of standard D-Bus method.

1368

1369

Inserts property tags and interface annotation tags.

714

"""Standard D-Bus method, overloaded to insert property tags.

1370

715

"""

1371

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1372

object_path,

1373

connection)

716

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

717

connection)

1374

718

try:

1375

719

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

1376

1377

720

def make_tag(document, name, prop):

1378

721

e = document.createElement("property")

1379

722

e.setAttribute("name", name)

1380

723

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

1381

724

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

1382

725

return e

1383

1384

726

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

1385

# Add property tags

1386

727

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

1387

728

for name, prop

1388

in self._get_all_dbus_things("property")

729

in self._get_all_dbus_properties()

1389

730

if prop._dbus_interface

1390

731

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

1391

732

if_tag.appendChild(tag)

1392

# Add annotation tags for properties

1393

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

1394

annots = dict()

1395

for name, prop in self._get_all_dbus_things(

1396

"property"):

1397

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

1398

and prop._dbus_interface

1399

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

1400

annots.update(getattr(

1401

prop, "_dbus_annotations", {}))

1402

for name, value in annots.items():

1403

ann_tag = document.createElement(

1404

"annotation")

1405

ann_tag.setAttribute("name", name)

1406

ann_tag.setAttribute("value", value)

1407

tag.appendChild(ann_tag)

1408

733

# Add the names to the return values for the

1409

734

# "org.freedesktop.DBus.Properties" methods

1410

735

if (if_tag.getAttribute("name")

1425

750

except (AttributeError, xml.dom.DOMException,

1426

751

xml.parsers.expat.ExpatError) as error:

1427

752

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

1428

exc_info=error)

1429

return xmlstring

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

1499

1500

def datetime_to_dbus(dt, variant_level=0):

753

error)

754

return xmlstring

755

756

757

def datetime_to_dbus (dt, variant_level=0):

1501

758

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

1502

759

if dt is None:

1503

760

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

1504

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

1505

1506

1507

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1508

"""A class decorator; applied to a subclass of

1509

dbus.service.Object, it will add alternate D-Bus attributes with

1510

interface names according to the "alt_interface_names" mapping.

1511

Usage:

1512

1513

@alternate_dbus_interfaces({"org.example.Interface":

1514

"net.example.AlternateInterface"})

1515

class SampleDBusObject(dbus.service.Object):

1516

@dbus.service.method("org.example.Interface")

1517

def SampleDBusMethod():

1518

pass

1519

1520

The above "SampleDBusMethod" on "SampleDBusObject" will be

1521

reachable via two interfaces: "org.example.Interface" and

1522

"net.example.AlternateInterface", the latter of which will have

1523

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1524

"true", unless "deprecate" is passed with a False value.

1525

1526

This works for methods and signals, and also for D-Bus properties

1527

(from DBusObjectWithProperties) and interfaces (from the

1528

dbus_interface_annotations decorator).

761

return dbus.String(dt.isoformat(),

762

variant_level=variant_level)

763

764

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

765

.__metaclass__):

766

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

767

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

1529

768

"""

1530

1531

def wrapper(cls):

1532

for orig_interface_name, alt_interface_name in (

1533

alt_interface_names.items()):

1534

attr = {}

1535

interface_names = set()

1536

# Go though all attributes of the class

1537

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

769

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

770

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

771

# methods, signals, or properties in them

772

for base in (b for b in bases

773

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

774

# Go though all attributes of the base class

775

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

1538

776

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

1539

777

# with the wrong interface name

1540

778

if (not hasattr(attribute, "_dbus_interface")

1541

or not attribute._dbus_interface.startswith(

1542

orig_interface_name)):

779

or not attribute._dbus_interface

780

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

1543

781

continue

1544

782

# Create an alternate D-Bus interface name based on

1545

783

# the current name

1546

alt_interface = attribute._dbus_interface.replace(

1547

orig_interface_name, alt_interface_name)

1548

interface_names.add(alt_interface)

784

alt_interface = (attribute._dbus_interface

785

.replace("se.recompile.Mandos",

786

"se.bsnet.fukt.Mandos"))

1549

787

# Is this a D-Bus signal?

1550

788

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

1551

# Extract the original non-method undecorated

1552

# function by black magic

1553

if sys.version_info.major == 2:

1554

nonmethod_func = (dict(

789

# Extract the original non-method function by

790

# black magic

791

nonmethod_func = (dict(

1555

792

zip(attribute.func_code.co_freevars,

1556

attribute.__closure__))

1557

["func"].cell_contents)

1558

else:

1559

nonmethod_func = (dict(

1560

zip(attribute.__code__.co_freevars,

1561

attribute.__closure__))

1562

["func"].cell_contents)

793

attribute.__closure__))["func"]

794

.cell_contents)

1563

795

# Create a new, but exactly alike, function

1564

796

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

1565

797

# with the alternate D-Bus interface name

1566

new_function = copy_function(nonmethod_func)

1567

new_function = (dbus.service.signal(

1568

alt_interface,

1569

attribute._dbus_signature)(new_function))

1570

# Copy annotations, if any

1571

try:

1572

new_function._dbus_annotations = dict(

1573

attribute._dbus_annotations)

1574

except AttributeError:

1575

pass

798

new_function = (dbus.service.signal

799

(alt_interface,

800

attribute._dbus_signature)

801

(types.FunctionType(

802

nonmethod_func.func_code,

803

nonmethod_func.func_globals,

804

nonmethod_func.func_name,

805

nonmethod_func.func_defaults,

806

nonmethod_func.func_closure)))

1576

807

# Define a creator of a function to call both the

1577

# original and alternate functions, so both the

1578

# original and alternate signals gets sent when

1579

# the function is called

808

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

809

# signals gets sent when the function is called

1580

810

def fixscope(func1, func2):

1581

811

"""This function is a scope container to pass

1582

812

func1 and func2 to the "call_both" function

1583

813

outside of its arguments"""

1584

1585

@functools.wraps(func2)

1586

814

def call_both(*args, **kwargs):

1587

815

"""This function will emit two D-Bus

1588

816

signals by calling func1 and func2"""

1589

817

func1(*args, **kwargs)

1590

818

func2(*args, **kwargs)

1591

# Make wrapper function look like a D-Bus signal

1592

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

1593

if name.startswith("_dbus_"):

1594

setattr(call_both, name, attr)

1595

1596

819

return call_both

1597

820

# Create the "call_both" function and add it to

1598

821

# the class

1599

attr[attrname] = fixscope(attribute, new_function)

822

attr[attrname] = fixscope(attribute,

823

new_function)

1600

824

# Is this a D-Bus method?

1601

825

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

1602

826

# Create a new, but exactly alike, function

1603

827

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

1604

828

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

1605

829

# to the class.

1606

attr[attrname] = (

1607

dbus.service.method(

1608

alt_interface,

1609

attribute._dbus_in_signature,

1610

attribute._dbus_out_signature)

1611

(copy_function(attribute)))

1612

# Copy annotations, if any

1613

try:

1614

attr[attrname]._dbus_annotations = dict(

1615

attribute._dbus_annotations)

1616

except AttributeError:

1617

pass

830

attr[attrname] = (dbus.service.method

831

(alt_interface,

832

attribute._dbus_in_signature,

833

attribute._dbus_out_signature)

834

(types.FunctionType

835

(attribute.func_code,

836

attribute.func_globals,

837

attribute.func_name,

838

attribute.func_defaults,

839

attribute.func_closure)))

1618

840

# Is this a D-Bus property?

1619

841

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

1620

842

# Create a new, but exactly alike, function

1621

843

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

1622

844

# property with the alternate D-Bus interface

1623

845

# name. Add it to the class.

1624

attr[attrname] = (dbus_service_property(

1625

alt_interface, attribute._dbus_signature,

1626

attribute._dbus_access,

1627

attribute._dbus_get_args_options

1628

["byte_arrays"])

1629

(copy_function(attribute)))

1630

# Copy annotations, if any

1631

try:

1632

attr[attrname]._dbus_annotations = dict(

1633

attribute._dbus_annotations)

1634

except AttributeError:

1635

pass

1636

# Is this a D-Bus interface?

1637

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

1638

# Create a new, but exactly alike, function

1639

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

1640

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

1641

# to the class.

1642

attr[attrname] = (

1643

dbus_interface_annotations(alt_interface)

1644

(copy_function(attribute)))

1645

if deprecate:

1646

# Deprecate all alternate interfaces

1647

iname="_AlternateDBusNames_interface_annotation{}"

1648

for interface_name in interface_names:

1649

1650

@dbus_interface_annotations(interface_name)

1651

def func(self):

1652

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

1653

"true" }

1654

# Find an unused name

1655

for aname in (iname.format(i)

1656

for i in itertools.count()):

1657

if aname not in attr:

1658

attr[aname] = func

1659

break

1660

if interface_names:

1661

# Replace the class with a new subclass of it with

1662

# methods, signals, etc. as created above.

1663

if sys.version_info.major == 2:

1664

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

1665

(cls, ), attr)

1666

else:

1667

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

1668

(cls, ), attr)

1669

return cls

1670

1671

return wrapper

1672

1673

1674

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

1675

"se.bsnet.fukt.Mandos"})

846

attr[attrname] = (dbus_service_property

847

(alt_interface,

848

attribute._dbus_signature,

849

attribute._dbus_access,

850

attribute

851

._dbus_get_args_options

852

["byte_arrays"])

853

(types.FunctionType

854

(attribute.func_code,

855

attribute.func_globals,

856

attribute.func_name,

857

attribute.func_defaults,

858

attribute.func_closure)))

859

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

860

1676

861

class ClientDBus(Client, DBusObjectWithProperties):

1677

862

"""A Client class using D-Bus

1678

863

1682

867

"""

1683

868

1684

869

runtime_expansions = (Client.runtime_expansions

1685

+ ("dbus_object_path", ))

1686

1687

_interface = "se.recompile.Mandos.Client"

870

+ ("dbus_object_path",))

1688

871

1689

872

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

1690

873

1691

874

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

875

self._approvals_pending = 0

1692

876

self.bus = bus

1693

877

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

1694

878

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

1695

879

# the D-Bus

1696

client_object_name = str(self.name).translate(

880

client_object_name = unicode(self.name).translate(

1697

881

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

1698

882

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

1699

self.dbus_object_path = dbus.ObjectPath(

1700

"/clients/" + client_object_name)

883

self.dbus_object_path = (dbus.ObjectPath

884

("/clients/" + client_object_name))

1701

885

DBusObjectWithProperties.__init__(self, self.bus,

1702

886

self.dbus_object_path)

1703

1704

def notifychangeproperty(transform_func, dbus_name,

1705

type_func=lambda x: x,

1706

variant_level=1,

1707

invalidate_only=False,

1708

_interface=_interface):

887

888

def notifychangeproperty(transform_func,

889

dbus_name, type_func=lambda x: x,

890

variant_level=1):

1709

891

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

1710

892

its changes to DBus.

1711

1712

transform_fun: Function that takes a value and a variant_level

1713

and transforms it to a D-Bus type.

893

894

transform_fun: Function that takes a value and transforms it

895

to a D-Bus type.

1714

896

dbus_name: D-Bus name of the variable

1715

897

type_func: Function that transform the value before sending it

1716

898

to the D-Bus. Default: no transform

1717

899

variant_level: D-Bus variant level. Default: 1

1718

900

"""

1719

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

1720

901

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

1721

902

def setter(self, value):

1722

903

if hasattr(self, "dbus_object_path"):

1723

904

if (not hasattr(self, attrname) or

1724

905

type_func(getattr(self, attrname, None))

1725

906

!= type_func(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())

907

dbus_value = transform_func(type_func(value),

908

variant_level)

909

self.PropertyChanged(dbus.String(dbus_name),

910

dbus_value)

1741

911

setattr(self, attrname, value)

1742

912

1743

913

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

1744

914

915

1745

916

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1746

917

approvals_pending = notifychangeproperty(dbus.Boolean,

1747

918

"ApprovalPending",

1749

920

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

1750

921

last_enabled = notifychangeproperty(datetime_to_dbus,

1751

922

"LastEnabled")

1752

checker = notifychangeproperty(

1753

dbus.Boolean, "CheckerRunning",

1754

type_func = lambda checker: checker is not None)

923

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

924

type_func = lambda checker:

925

checker is not None)

1755

926

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1756

927

"LastCheckedOK")

1757

last_checker_status = notifychangeproperty(dbus.Int16,

1758

"LastCheckerStatus")

1759

928

last_approval_request = notifychangeproperty(

1760

929

datetime_to_dbus, "LastApprovalRequest")

1761

930

approved_by_default = notifychangeproperty(dbus.Boolean,

1762

931

"ApprovedByDefault")

1763

approval_delay = notifychangeproperty(

1764

dbus.UInt64, "ApprovalDelay",

1765

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

932

approval_delay = notifychangeproperty(dbus.UInt16,

933

"ApprovalDelay",

934

type_func =

935

_timedelta_to_milliseconds)

1766

936

approval_duration = notifychangeproperty(

1767

dbus.UInt64, "ApprovalDuration",

1768

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

937

dbus.UInt16, "ApprovalDuration",

938

type_func = _timedelta_to_milliseconds)

1769

939

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

1770

timeout = notifychangeproperty(

1771

dbus.UInt64, "Timeout",

1772

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

940

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

941

type_func =

942

_timedelta_to_milliseconds)

1773

943

extended_timeout = notifychangeproperty(

1774

dbus.UInt64, "ExtendedTimeout",

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)

944

dbus.UInt16, "ExtendedTimeout",

945

type_func = _timedelta_to_milliseconds)

946

interval = notifychangeproperty(dbus.UInt16,

947

"Interval",

948

type_func =

949

_timedelta_to_milliseconds)

1779

950

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

1780

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

1781

invalidate_only=True)

1782

951

1783

952

del notifychangeproperty

1784

953

1791

960

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

1792

961

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

1793

962

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:

963

def checker_callback(self, pid, condition, command,

964

*args, **kwargs):

965

self.checker_callback_tag = None

966

self.checker = None

967

if os.WIFEXITED(condition):

968

exitstatus = os.WEXITSTATUS(condition)

1801

969

# Emit D-Bus signal

1802

970

self.CheckerCompleted(dbus.Int16(exitstatus),

1803

# This is specific to GNU libC

1804

dbus.Int64(exitstatus << 8),

971

dbus.Int64(condition),

1805

972

dbus.String(command))

1806

973

else:

1807

974

# Emit D-Bus signal

1808

975

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

1809

dbus.Int64(

1810

# This is specific to GNU libC

1811

(exitstatus << 8)

1812

| self.last_checker_signal),

976

dbus.Int64(condition),

1813

977

dbus.String(command))

1814

return ret

978

979

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

980

*args, **kwargs)

1815

981

1816

982

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

1817

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

983

old_checker = self.checker

984

if self.checker is not None:

985

old_checker_pid = self.checker.pid

986

else:

987

old_checker_pid = None

1818

988

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

1819

989

# Only if new checker process was started

1820

990

if (self.checker is not None

1824

994

return r

1825

995

1826

996

def _reset_approved(self):

1827

self.approved = None

997

self._approved = None

1828

998

return False

1829

999

1830

1000

def approve(self, value=True):

1831

self.approved = value

1832

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

1833

* 1000), self._reset_approved)

1834

1001

self.send_changedstate()

1002

self._approved = value

1003

gobject.timeout_add(_timedelta_to_milliseconds

1004

(self.approval_duration),

1005

self._reset_approved)

1006

1835

1007

1836

1008

## D-Bus methods, signals & properties

1837

1838

## Interfaces

1009

_interface = "se.recompile.Mandos.Client"

1839

1010

1840

1011

## Signals

1841

1012

1852

1023

pass

1853

1024

1854

1025

# PropertyChanged - signal

1855

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

1856

1026

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

1857

1027

def PropertyChanged(self, property, value):

1858

1028

"D-Bus signal"

1892

1062

self.checked_ok()

1893

1063

1894

1064

# Enable - method

1895

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

1896

1065

@dbus.service.method(_interface)

1897

1066

def Enable(self):

1898

1067

"D-Bus method"

1899

1068

self.enable()

1900

1069

1901

1070

# StartChecker - method

1902

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

1903

1071

@dbus.service.method(_interface)

1904

1072

def StartChecker(self):

1905

1073

"D-Bus method"

1906

1074

self.start_checker()

1907

1075

1908

1076

# Disable - method

1909

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

1910

1077

@dbus.service.method(_interface)

1911

1078

def Disable(self):

1912

1079

"D-Bus method"

1913

1080

self.disable()

1914

1081

1915

1082

# StopChecker - method

1916

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

1917

1083

@dbus.service.method(_interface)

1918

1084

def StopChecker(self):

1919

1085

self.stop_checker()

1926

1092

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

1927

1093

1928

1094

# ApprovedByDefault - property

1929

@dbus_service_property(_interface,

1930

signature="b",

1095

@dbus_service_property(_interface, signature="b",

1931

1096

access="readwrite")

1932

1097

def ApprovedByDefault_dbus_property(self, value=None):

1933

1098

if value is None: # get

1935

1100

self.approved_by_default = bool(value)

1936

1101

1937

1102

# ApprovalDelay - property

1938

@dbus_service_property(_interface,

1939

signature="t",

1103

@dbus_service_property(_interface, signature="t",

1940

1104

access="readwrite")

1941

1105

def ApprovalDelay_dbus_property(self, value=None):

1942

1106

if value is None: # get

1943

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

1944

* 1000)

1107

return dbus.UInt64(self.approval_delay_milliseconds())

1945

1108

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

1946

1109

1947

1110

# ApprovalDuration - property

1948

@dbus_service_property(_interface,

1949

signature="t",

1111

@dbus_service_property(_interface, signature="t",

1950

1112

access="readwrite")

1951

1113

def ApprovalDuration_dbus_property(self, value=None):

1952

1114

if value is None: # get

1953

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

1954

* 1000)

1115

return dbus.UInt64(_timedelta_to_milliseconds(

1116

self.approval_duration))

1955

1117

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

1956

1118

1957

1119

# Name - property

1958

@dbus_annotations(

1959

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

1960

1120

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

1961

1121

def Name_dbus_property(self):

1962

1122

return dbus.String(self.name)

1963

1123

1964

1124

# Fingerprint - property

1965

@dbus_annotations(

1966

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

1967

1125

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

1968

1126

def Fingerprint_dbus_property(self):

1969

1127

return dbus.String(self.fingerprint)

1970

1128

1971

1129

# Host - property

1972

@dbus_service_property(_interface,

1973

signature="s",

1130

@dbus_service_property(_interface, signature="s",

1974

1131

access="readwrite")

1975

1132

def Host_dbus_property(self, value=None):

1976

1133

if value is None: # get

1977

1134

return dbus.String(self.host)

1978

self.host = str(value)

1135

self.host = value

1979

1136

1980

1137

# Created - property

1981

@dbus_annotations(

1982

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

1983

1138

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

1984

1139

def Created_dbus_property(self):

1985

return datetime_to_dbus(self.created)

1140

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

1986

1141

1987

1142

# LastEnabled - property

1988

1143

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

1990

1145

return datetime_to_dbus(self.last_enabled)

1991

1146

1992

1147

# Enabled - property

1993

@dbus_service_property(_interface,

1994

signature="b",

1148

@dbus_service_property(_interface, signature="b",

1995

1149

access="readwrite")

1996

1150

def Enabled_dbus_property(self, value=None):

1997

1151

if value is None: # get

2002

1156

self.disable()

2003

1157

2004

1158

# LastCheckedOK - property

2005

@dbus_service_property(_interface,

2006

signature="s",

1159

@dbus_service_property(_interface, signature="s",

2007

1160

access="readwrite")

2008

1161

def LastCheckedOK_dbus_property(self, value=None):

2009

1162

if value is not None:

2011

1164

return

2012

1165

return datetime_to_dbus(self.last_checked_ok)

2013

1166

2014

# LastCheckerStatus - property

2015

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

2016

def LastCheckerStatus_dbus_property(self):

2017

return dbus.Int16(self.last_checker_status)

2018

2019

1167

# Expires - property

2020

1168

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

2021

1169

def Expires_dbus_property(self):

2027

1175

return datetime_to_dbus(self.last_approval_request)

2028

1176

2029

1177

# Timeout - property

2030

@dbus_service_property(_interface,

2031

signature="t",

1178

@dbus_service_property(_interface, signature="t",

2032

1179

access="readwrite")

2033

1180

def Timeout_dbus_property(self, value=None):

2034

1181

if value is None: # get

2035

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

2036

old_timeout = self.timeout

1182

return dbus.UInt64(self.timeout_milliseconds())

2037

1183

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

2038

# Reschedule disabling

2039

if self.enabled:

2040

now = datetime.datetime.utcnow()

2041

self.expires += self.timeout - old_timeout

2042

if self.expires <= now:

2043

# The timeout has passed

2044

self.disable()

2045

else:

2046

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

2047

is None):

2048

return

2049

GLib.source_remove(self.disable_initiator_tag)

2050

self.disable_initiator_tag = GLib.timeout_add(

2051

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

2052

self.disable)

1184

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

1185

return

1186

# Reschedule timeout

1187

gobject.source_remove(self.disable_initiator_tag)

1188

self.disable_initiator_tag = None

1189

self.expires = None

1190

time_to_die = (self.

1191

_timedelta_to_milliseconds((self

1192

.last_checked_ok

1193

+ self.timeout)

1194

- datetime.datetime

1195

.utcnow()))

1196

if time_to_die <= 0:

1197

# The timeout has passed

1198

self.disable()

1199

else:

1200

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

1201

+ datetime.timedelta(milliseconds =

1202

time_to_die))

1203

self.disable_initiator_tag = (gobject.timeout_add

1204

(time_to_die, self.disable))

2053

1205

2054

1206

# ExtendedTimeout - property

2055

@dbus_service_property(_interface,

2056

signature="t",

1207

@dbus_service_property(_interface, signature="t",

2057

1208

access="readwrite")

2058

1209

def ExtendedTimeout_dbus_property(self, value=None):

2059

1210

if value is None: # get

2060

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

2061

* 1000)

1211

return dbus.UInt64(self.extended_timeout_milliseconds())

2062

1212

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

2063

1213

2064

1214

# Interval - property

2065

@dbus_service_property(_interface,

2066

signature="t",

1215

@dbus_service_property(_interface, signature="t",

2067

1216

access="readwrite")

2068

1217

def Interval_dbus_property(self, value=None):

2069

1218

if value is None: # get

2070

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

1219

return dbus.UInt64(self.interval_milliseconds())

2071

1220

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

2072

1221

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

2073

1222

return

2074

if self.enabled:

2075

# Reschedule checker run

2076

GLib.source_remove(self.checker_initiator_tag)

2077

self.checker_initiator_tag = GLib.timeout_add(

2078

value, self.start_checker)

2079

self.start_checker() # Start one now, too

1223

# Reschedule checker run

1224

gobject.source_remove(self.checker_initiator_tag)

1225

self.checker_initiator_tag = (gobject.timeout_add

1226

(value, self.start_checker))

1227

self.start_checker() # Start one now, too

2080

1228

2081

1229

# Checker - property

2082

@dbus_service_property(_interface,

2083

signature="s",

1230

@dbus_service_property(_interface, signature="s",

2084

1231

access="readwrite")

2085

1232

def Checker_dbus_property(self, value=None):

2086

1233

if value is None: # get

2087

1234

return dbus.String(self.checker_command)

2088

self.checker_command = str(value)

1235

self.checker_command = value

2089

1236

2090

1237

# CheckerRunning - property

2091

@dbus_service_property(_interface,

2092

signature="b",

1238

@dbus_service_property(_interface, signature="b",

2093

1239

access="readwrite")

2094

1240

def CheckerRunning_dbus_property(self, value=None):

2095

1241

if value is None: # get

2100

1246

self.stop_checker()

2101

1247

2102

1248

# ObjectPath - property

2103

@dbus_annotations(

2104

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

2105

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

2106

1249

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

2107

1250

def ObjectPath_dbus_property(self):

2108

1251

return self.dbus_object_path # is already a dbus.ObjectPath

2109

1252

2110

1253

# Secret = property

2111

@dbus_annotations(

2112

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

2113

"invalidates"})

2114

@dbus_service_property(_interface,

2115

signature="ay",

2116

access="write",

2117

byte_arrays=True)

1254

@dbus_service_property(_interface, signature="ay",

1255

access="write", byte_arrays=True)

2118

1256

def Secret_dbus_property(self, value):

2119

self.secret = bytes(value)

1257

self.secret = str(value)

2120

1258

2121

1259

del _interface

2122

1260

2126

1264

self._pipe = child_pipe

2127

1265

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

2128

1266

if not self._pipe.recv():

2129

raise KeyError(fpr)

1267

raise KeyError()

2130

1268

2131

1269

def __getattribute__(self, name):

2132

if name == '_pipe':

1270

if(name == '_pipe'):

2133

1271

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

2134

1272

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

2135

1273

data = self._pipe.recv()

2136

1274

if data[0] == 'data':

2137

1275

return data[1]

2138

1276

if data[0] == 'function':

2139

2140

1277

def func(*args, **kwargs):

2141

1278

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

2142

1279

return self._pipe.recv()[1]

2143

2144

1280

return func

2145

1281

2146

1282

def __setattr__(self, name, value):

2147

if name == '_pipe':

1283

if(name == '_pipe'):

2148

1284

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

2149

1285

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

2150

1286

1287

class ClientDBusTransitional(ClientDBus):

1288

__metaclass__ = AlternateDBusNamesMetaclass

2151

1289

2152

1290

class ClientHandler(socketserver.BaseRequestHandler, object):

2153

1291

"""A class to handle client connections.

2158

1296

def handle(self):

2159

1297

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

2160

1298

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

2161

str(self.client_address))

1299

unicode(self.client_address))

2162

1300

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

2163

1301

self.server.child_pipe.fileno())

2164

1302

2165

session = gnutls.ClientSession(self.request)

1303

session = (gnutls.connection

1304

.ClientSession(self.request,

1305

gnutls.connection

1306

.X509Credentials()))

1307

1308

# Note: gnutls.connection.X509Credentials is really a

1309

# generic GnuTLS certificate credentials object so long as

1310

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

1311

# here despite using OpenPGP certificates.

2166

1312

2167

1313

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

2168

1314

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

2172

1318

priority = self.server.gnutls_priority

2173

1319

if priority is None:

2174

1320

priority = "NORMAL"

2175

gnutls.priority_set_direct(session._c_object, priority,

2176

None)

1321

(gnutls.library.functions

1322

.gnutls_priority_set_direct(session._c_object,

1323

priority, None))

2177

1324

2178

1325

# Start communication using the Mandos protocol

2179

1326

# Get protocol number

2181

1328

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

2182

1329

try:

2183

1330

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

2184

raise RuntimeError(line)

1331

raise RuntimeError

2185

1332

except (ValueError, IndexError, RuntimeError) as error:

2186

1333

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

2187

1334

return

2189

1336

# Start GnuTLS connection

2190

1337

try:

2191

1338

session.handshake()

2192

except gnutls.Error as error:

1339

except gnutls.errors.GNUTLSError as error:

2193

1340

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

2194

1341

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

2195

1342

# established. Just abandon the request.

2199

1346

approval_required = False

2200

1347

try:

2201

1348

try:

2202

fpr = self.fingerprint(

2203

self.peer_certificate(session))

2204

except (TypeError, gnutls.Error) as error:

1349

fpr = self.fingerprint(self.peer_certificate

1350

(session))

1351

except (TypeError,

1352

gnutls.errors.GNUTLSError) as error:

2205

1353

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

2206

1354

return

2207

1355

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

2220

1368

while True:

2221

1369

if not client.enabled:

2222

1370

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

2223

client.name)

1371

client.name)

2224

1372

if self.server.use_dbus:

2225

1373

# Emit D-Bus signal

2226

1374

client.Rejected("Disabled")

2227

1375

return

2228

1376

2229

if client.approved or not client.approval_delay:

1377

if client._approved or not client.approval_delay:

2230

1378

#We are approved or approval is disabled

2231

1379

break

2232

elif client.approved is None:

1380

elif client._approved is None:

2233

1381

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

2234

1382

client.name)

2235

1383

if self.server.use_dbus:

2236

1384

# Emit D-Bus signal

2237

1385

client.NeedApproval(

2238

client.approval_delay.total_seconds()

2239

* 1000, client.approved_by_default)

1386

client.approval_delay_milliseconds(),

1387

client.approved_by_default)

2240

1388

else:

2241

1389

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

2242

1390

client.name)

2248

1396

#wait until timeout or approved

2249

1397

time = datetime.datetime.now()

2250

1398

client.changedstate.acquire()

2251

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

1399

(client.changedstate.wait

1400

(float(client._timedelta_to_milliseconds(delay)

1401

/ 1000)))

2252

1402

client.changedstate.release()

2253

1403

time2 = datetime.datetime.now()

2254

1404

if (time2 - time) >= delay:

2265

1415

else:

2266

1416

delay -= time2 - time

2267

1417

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

1418

sent_size = 0

1419

while sent_size < len(client.secret):

1420

try:

1421

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

1422

except gnutls.errors.GNUTLSError as error:

1423

logger.warning("gnutls send failed")

1424

return

1425

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

1426

sent, len(client.secret)

1427

- (sent_size + sent))

1428

sent_size += sent

2274

1429

2275

1430

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

2276

1431

# bump the timeout using extended_timeout

2277

client.bump_timeout(client.extended_timeout)

1432

client.checked_ok(client.extended_timeout)

2278

1433

if self.server.use_dbus:

2279

1434

# Emit D-Bus signal

2280

1435

client.GotSecret()

2284

1439

client.approvals_pending -= 1

2285

1440

try:

2286

1441

session.bye()

2287

except gnutls.Error as error:

2288

logger.warning("GnuTLS bye failed",

2289

exc_info=error)

1442

except gnutls.errors.GNUTLSError as error:

1443

logger.warning("GnuTLS bye failed")

2290

1444

2291

1445

@staticmethod

2292

1446

def peer_certificate(session):

2293

1447

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

2294

1448

# If not an OpenPGP certificate...

2295

if (gnutls.certificate_type_get(session._c_object)

2296

!= gnutls.CRT_OPENPGP):

2297

# ...return invalid data

2298

return b""

1449

if (gnutls.library.functions

1450

.gnutls_certificate_type_get(session._c_object)

1451

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1452

# ...do the normal thing

1453

return session.peer_certificate

2299

1454

list_size = ctypes.c_uint(1)

2300

cert_list = (gnutls.certificate_get_peers

1455

cert_list = (gnutls.library.functions

1456

.gnutls_certificate_get_peers

2301

1457

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

2302

1458

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

2303

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

1459

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

1460

" certificate")

2304

1461

if list_size.value == 0:

2305

1462

return None

2306

1463

cert = cert_list[0]

2310

1467

def fingerprint(openpgp):

2311

1468

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2312

1469

# New GnuTLS "datum" with the OpenPGP public key

2313

datum = gnutls.datum_t(

2314

ctypes.cast(ctypes.c_char_p(openpgp),

2315

ctypes.POINTER(ctypes.c_ubyte)),

2316

ctypes.c_uint(len(openpgp)))

1470

datum = (gnutls.library.types

1471

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

1472

ctypes.POINTER

1473

(ctypes.c_ubyte)),

1474

ctypes.c_uint(len(openpgp))))

2317

1475

# New empty GnuTLS certificate

2318

crt = gnutls.openpgp_crt_t()

2319

gnutls.openpgp_crt_init(ctypes.byref(crt))

1476

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1477

(gnutls.library.functions

1478

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2320

1479

# Import the OpenPGP public key into the certificate

2321

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

2322

gnutls.OPENPGP_FMT_RAW)

1480

(gnutls.library.functions

1481

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

1482

gnutls.library.constants

1483

.GNUTLS_OPENPGP_FMT_RAW))

2323

1484

# Verify the self signature in the key

2324

1485

crtverify = ctypes.c_uint()

2325

gnutls.openpgp_crt_verify_self(crt, 0,

2326

ctypes.byref(crtverify))

1486

(gnutls.library.functions

1487

.gnutls_openpgp_crt_verify_self(crt, 0,

1488

ctypes.byref(crtverify)))

2327

1489

if crtverify.value != 0:

2328

gnutls.openpgp_crt_deinit(crt)

2329

raise gnutls.CertificateSecurityError("Verify failed")

1490

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1491

raise (gnutls.errors.CertificateSecurityError

1492

("Verify failed"))

2330

1493

# New buffer for the fingerprint

2331

1494

buf = ctypes.create_string_buffer(20)

2332

1495

buf_len = ctypes.c_size_t()

2333

1496

# Get the fingerprint from the certificate into the buffer

2334

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

2335

ctypes.byref(buf_len))

1497

(gnutls.library.functions

1498

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

1499

ctypes.byref(buf_len)))

2336

1500

# Deinit the certificate

2337

gnutls.openpgp_crt_deinit(crt)

1501

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2338

1502

# Convert the buffer to a Python bytestring

2339

1503

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

2340

1504

# Convert the bytestring to hexadecimal notation

2341

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

1505

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

2342

1506

return hex_fpr

2343

1507

2344

1508

2345

1509

class MultiprocessingMixIn(object):

2346

1510

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

2347

2348

1511

def sub_process_main(self, request, address):

2349

1512

try:

2350

1513

self.finish_request(request, address)

2351

except Exception:

1514

except:

2352

1515

self.handle_error(request, address)

2353

1516

self.close_request(request)

2354

1517

2355

1518

def process_request(self, request, address):

2356

1519

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

2357

1520

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

2358

args = (request, address))

1521

args = (request,

1522

address))

2359

1523

proc.start()

2360

1524

return proc

2361

1525

2362

1526

2363

1527

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2364

1528

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

2365

2366

1529

def process_request(self, request, client_address):

2367

1530

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

2368

1531

2377

1540

2378

1541

def add_pipe(self, parent_pipe, proc):

2379

1542

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

2380

raise NotImplementedError()

1543

raise NotImplementedError

2381

1544

2382

1545

2383

1546

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2389

1552

interface: None or a network interface name (string)

2390

1553

use_ipv6: Boolean; to use IPv6 or not

2391

1554

"""

2392

2393

1555

def __init__(self, server_address, RequestHandlerClass,

2394

interface=None,

2395

use_ipv6=True,

2396

socketfd=None):

2397

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

2398

creating a new one with socket.socket().

2399

"""

1556

interface=None, use_ipv6=True):

2400

1557

self.interface = interface

2401

1558

if use_ipv6:

2402

1559

self.address_family = socket.AF_INET6

2403

if socketfd is not None:

2404

# Save the file descriptor

2405

self.socketfd = socketfd

2406

# Save the original socket.socket() function

2407

self.socket_socket = socket.socket

2408

# To implement --socket, we monkey patch socket.socket.

2409

#

2410

# (When socketserver.TCPServer is a new-style class, we

2411

# could make self.socket into a property instead of monkey

2412

# patching socket.socket.)

2413

#

2414

# Create a one-time-only replacement for socket.socket()

2415

@functools.wraps(socket.socket)

2416

def socket_wrapper(*args, **kwargs):

2417

# Restore original function so subsequent calls are

2418

# not affected.

2419

socket.socket = self.socket_socket

2420

del self.socket_socket

2421

# This time only, return a new socket object from the

2422

# saved file descriptor.

2423

return socket.fromfd(self.socketfd, *args, **kwargs)

2424

# Replace socket.socket() function with wrapper

2425

socket.socket = socket_wrapper

2426

# The socketserver.TCPServer.__init__ will call

2427

# socket.socket(), which might be our replacement,

2428

# socket_wrapper(), if socketfd was set.

2429

1560

socketserver.TCPServer.__init__(self, server_address,

2430

1561

RequestHandlerClass)

2431

2432

1562

def server_bind(self):

2433

1563

"""This overrides the normal server_bind() function

2434

1564

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

2440

1570

self.interface)

2441

1571

else:

2442

1572

try:

2443

self.socket.setsockopt(

2444

socket.SOL_SOCKET, SO_BINDTODEVICE,

2445

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

1573

self.socket.setsockopt(socket.SOL_SOCKET,

1574

SO_BINDTODEVICE,

1575

str(self.interface

1576

+ '\0'))

2446

1577

except socket.error as error:

2447

if error.errno == errno.EPERM:

2448

logger.error("No permission to bind to"

2449

" interface %s", self.interface)

2450

elif error.errno == errno.ENOPROTOOPT:

1578

if error[0] == errno.EPERM:

1579

logger.error("No permission to"

1580

" bind to interface %s",

1581

self.interface)

1582

elif error[0] == errno.ENOPROTOOPT:

2451

1583

logger.error("SO_BINDTODEVICE not available;"

2452

1584

" cannot bind to interface %s",

2453

1585

self.interface)

2454

elif error.errno == errno.ENODEV:

2455

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

2456

" cannot bind", self.interface)

2457

1586

else:

2458

1587

raise

2459

1588

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

2462

1591

if self.address_family == socket.AF_INET6:

2463

1592

any_address = "::" # in6addr_any

2464

1593

else:

2465

any_address = "0.0.0.0" # INADDR_ANY

1594

any_address = socket.INADDR_ANY

2466

1595

self.server_address = (any_address,

2467

1596

self.server_address[1])

2468

1597

elif not self.server_address[1]:

2469

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

1598

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

1599

0)

2470

1600

# if self.interface:

2471

1601

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

2472

1602

# 0, # port

2484

1614

gnutls_priority GnuTLS priority string

2485

1615

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

2486

1616

2487

Assumes a GLib.MainLoop event loop.

1617

Assumes a gobject.MainLoop event loop.

2488

1618

"""

2489

2490

1619

def __init__(self, server_address, RequestHandlerClass,

2491

interface=None,

2492

use_ipv6=True,

2493

clients=None,

2494

gnutls_priority=None,

2495

use_dbus=True,

2496

socketfd=None):

1620

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

1621

gnutls_priority=None, use_dbus=True):

2497

1622

self.enabled = False

2498

1623

self.clients = clients

2499

1624

if self.clients is None:

2500

self.clients = {}

1625

self.clients = set()

2501

1626

self.use_dbus = use_dbus

2502

1627

self.gnutls_priority = gnutls_priority

2503

1628

IPv6_TCPServer.__init__(self, server_address,

2504

1629

RequestHandlerClass,

2505

1630

interface = interface,

2506

use_ipv6 = use_ipv6,

2507

socketfd = socketfd)

2508

1631

use_ipv6 = use_ipv6)

2509

1632

def server_activate(self):

2510

1633

if self.enabled:

2511

1634

return socketserver.TCPServer.server_activate(self)

2515

1638

2516

1639

def add_pipe(self, parent_pipe, proc):

2517

1640

# Call "handle_ipc" for both data and EOF events

2518

GLib.io_add_watch(

2519

parent_pipe.fileno(),

2520

GLib.IO_IN | GLib.IO_HUP,

2521

functools.partial(self.handle_ipc,

2522

parent_pipe = parent_pipe,

2523

proc = proc))

1641

gobject.io_add_watch(parent_pipe.fileno(),

1642

gobject.IO_IN | gobject.IO_HUP,

1643

functools.partial(self.handle_ipc,

1644

parent_pipe =

1645

parent_pipe,

1646

proc = proc))

2524

1647

2525

def handle_ipc(self, source, condition,

2526

parent_pipe=None,

2527

proc = None,

2528

client_object=None):

1648

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

1649

proc = None, client_object=None):

1650

condition_names = {

1651

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

1652

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

1653

# blocking).

1654

gobject.IO_PRI: "PRI", # There is urgent data to read.

1655

gobject.IO_ERR: "ERR", # Error condition.

1656

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1657

# broken, usually for pipes and

1658

# sockets).

1659

}

1660

conditions_string = ' | '.join(name

1661

for cond, name in

1662

condition_names.iteritems()

1663

if cond & condition)

2529

1664

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

2530

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

1665

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

2531

1666

# Wait for other process to exit

2532

1667

proc.join()

2533

1668

return False

2540

1675

fpr = request[1]

2541

1676

address = request[2]

2542

1677

2543

for c in self.clients.values():

1678

for c in self.clients:

2544

1679

if c.fingerprint == fpr:

2545

1680

client = c

2546

1681

break

2554

1689

parent_pipe.send(False)

2555

1690

return False

2556

1691

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))

1692

gobject.io_add_watch(parent_pipe.fileno(),

1693

gobject.IO_IN | gobject.IO_HUP,

1694

functools.partial(self.handle_ipc,

1695

parent_pipe =

1696

parent_pipe,

1697

proc = proc,

1698

client_object =

1699

client))

2564

1700

parent_pipe.send(True)

2565

1701

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

2566

1702

# same fileno

2572

1708

2573

1709

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

2574

1710

funcname)(*args,

2575

**kwargs)))

1711

**kwargs)))

2576

1712

2577

1713

if command == 'getattr':

2578

1714

attrname = request[1]

2579

if isinstance(client_object.__getattribute__(attrname),

2580

collections.Callable):

2581

parent_pipe.send(('function', ))

1715

if callable(client_object.__getattribute__(attrname)):

1716

parent_pipe.send(('function',))

2582

1717

else:

2583

parent_pipe.send((

2584

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

1718

parent_pipe.send(('data', client_object

1719

.__getattribute__(attrname)))

2585

1720

2586

1721

if command == 'setattr':

2587

1722

attrname = request[1]

2591

1726

return True

2592

1727

2593

1728

2594

def rfc3339_duration_to_delta(duration):

2595

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2596

2597

>>> rfc3339_duration_to_delta("P7D")

2598

datetime.timedelta(7)

2599

>>> rfc3339_duration_to_delta("PT60S")

2600

datetime.timedelta(0, 60)

2601

>>> rfc3339_duration_to_delta("PT60M")

2602

datetime.timedelta(0, 3600)

2603

>>> rfc3339_duration_to_delta("PT24H")

2604

datetime.timedelta(1)

2605

>>> rfc3339_duration_to_delta("P1W")

2606

datetime.timedelta(7)

2607

>>> rfc3339_duration_to_delta("PT5M30S")

2608

datetime.timedelta(0, 330)

2609

>>> rfc3339_duration_to_delta("P1DT3M20S")

2610

datetime.timedelta(1, 200)

2611

"""

2612

2613

# Parsing an RFC 3339 duration with regular expressions is not

2614

# possible - there would have to be multiple places for the same

2615

# values, like seconds. The current code, while more esoteric, is

2616

# cleaner without depending on a parsing library. If Python had a

2617

# built-in library for parsing we would use it, but we'd like to

2618

# avoid excessive use of external libraries.

2619

2620

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

2621

Token = collections.namedtuple("Token", (

2622

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

2623

# a "group" containing digits

2624

"value", # datetime.timedelta or None

2625

"followers")) # Tokens valid after this token

2626

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

2627

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

2628

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

2629

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

2630

datetime.timedelta(seconds=1),

2631

frozenset((token_end, )))

2632

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

2633

datetime.timedelta(minutes=1),

2634

frozenset((token_second, token_end)))

2635

token_hour = Token(re.compile(r"(\d+)H"),

2636

datetime.timedelta(hours=1),

2637

frozenset((token_minute, token_end)))

2638

token_time = Token(re.compile(r"T"),

2639

None,

2640

frozenset((token_hour, token_minute,

2641

token_second)))

2642

token_day = Token(re.compile(r"(\d+)D"),

2643

datetime.timedelta(days=1),

2644

frozenset((token_time, token_end)))

2645

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

2646

datetime.timedelta(weeks=4),

2647

frozenset((token_day, token_end)))

2648

token_year = Token(re.compile(r"(\d+)Y"),

2649

datetime.timedelta(weeks=52),

2650

frozenset((token_month, token_end)))

2651

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

2652

datetime.timedelta(weeks=1),

2653

frozenset((token_end, )))

2654

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

2655

frozenset((token_year, token_month,

2656

token_day, token_time,

2657

token_week)))

2658

# Define starting values

2659

value = datetime.timedelta() # Value so far

2660

found_token = None

2661

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

2662

s = duration # String left to parse

2663

# Loop until end token is found

2664

while found_token is not token_end:

2665

# Search for any currently valid tokens

2666

for token in followers:

2667

match = token.regexp.match(s)

2668

if match is not None:

2669

# Token found

2670

if token.value is not None:

2671

# Value found, parse digits

2672

factor = int(match.group(1), 10)

2673

# Add to value so far

2674

value += factor * token.value

2675

# Strip token from string

2676

s = token.regexp.sub("", s, 1)

2677

# Go to found token

2678

found_token = token

2679

# Set valid next tokens

2680

followers = found_token.followers

2681

break

2682

else:

2683

# No currently valid tokens were found

2684

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

2685

.format(duration))

2686

# End token found

2687

return value

2688

2689

2690

1729

def string_to_delta(interval):

2691

1730

"""Parse a string and return a datetime.timedelta

2692

1731

2703

1742

>>> string_to_delta('5m 30s')

2704

1743

datetime.timedelta(0, 330)

2705

1744

"""

2706

2707

try:

2708

return rfc3339_duration_to_delta(interval)

2709

except ValueError:

2710

pass

2711

2712

1745

timevalue = datetime.timedelta(0)

2713

1746

for s in interval.split():

2714

1747

try:

2715

suffix = s[-1]

1748

suffix = unicode(s[-1])

2716

1749

value = int(s[:-1])

2717

1750

if suffix == "d":

2718

1751

delta = datetime.timedelta(value)

2725

1758

elif suffix == "w":

2726

1759

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

2727

1760

else:

2728

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

2729

except IndexError as e:

1761

raise ValueError("Unknown suffix %r" % suffix)

1762

except (ValueError, IndexError) as e:

2730

1763

raise ValueError(*(e.args))

2731

1764

timevalue += delta

2732

1765

return timevalue

2733

1766

2734

1767

1768

def if_nametoindex(interface):

1769

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

1770

1771

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

1772

global if_nametoindex

1773

try:

1774

if_nametoindex = (ctypes.cdll.LoadLibrary

1775

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

1776

.if_nametoindex)

1777

except (OSError, AttributeError):

1778

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

1779

def if_nametoindex(interface):

1780

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

1781

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

1782

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

1783

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1784

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

1785

interface))

1786

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

1787

ifreq[16:20])[0]

1788

return interface_index

1789

return if_nametoindex(interface)

1790

1791

2735

1792

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

2736

1793

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

2737

1794

2745

1802

sys.exit()

2746

1803

if not noclose:

2747

1804

# Close all standard open file descriptors

2748

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

1805

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

2749

1806

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

2750

1807

raise OSError(errno.ENODEV,

2751

"{} not a character device"

2752

.format(os.devnull))

1808

"%s not a character device"

1809

% os.path.devnull)

2753

1810

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

2754

1811

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

2755

1812

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

2764

1821

2765

1822

parser = argparse.ArgumentParser()

2766

1823

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

2767

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

1824

version = "%%(prog)s %s" % version,

2768

1825

help="show version number and exit")

2769

1826

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

2770

1827

help="Bind to interface IF")

2776

1833

help="Run self-test")

2777

1834

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

2778

1835

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

2779

" to terminal", default=None)

1836

" to terminal")

2780

1837

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

2781

1838

help="Debug level for stdout output")

2782

1839

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

2789

1846

" files")

2790

1847

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

2791

1848

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

2792

" system bus interface", default=None)

1849

" system bus interface")

2793

1850

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

2794

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

2795

default=None)

2796

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

2797

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

2798

" state", default=None)

2799

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

2800

help="Specify a file descriptor to a network"

2801

" socket to use instead of creating one")

2802

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

2803

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

2804

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

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)

2809

1851

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

2810

1852

options = parser.parse_args()

2811

1853

2812

1854

if options.check:

2813

1855

import doctest

2814

fail_count, test_count = doctest.testmod()

2815

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

1856

doctest.testmod()

1857

sys.exit()

2816

1858

2817

1859

# Default values for config file for server-global settings

2818

1860

server_defaults = { "interface": "",

2820

1862

"port": "",

2821

1863

"debug": "False",

2822

1864

"priority":

2823

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

2824

":+SIGN-DSA-SHA256",

1865

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

2825

1866

"servicename": "Mandos",

2826

1867

"use_dbus": "True",

2827

1868

"use_ipv6": "True",

2828

1869

"debuglevel": "",

2829

"restore": "True",

2830

"socket": "",

2831

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

2832

"foreground": "False",

2833

"zeroconf": "True",

2834

}

1870

}

2835

1871

2836

1872

# Parse config file for server-global settings

2837

1873

server_config = configparser.SafeConfigParser(server_defaults)

2838

1874

del server_defaults

2839

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

1875

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

1876

"mandos.conf"))

2840

1877

# Convert the SafeConfigParser object to a dict

2841

1878

server_settings = server_config.defaults()

2842

1879

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

2843

for option in ("debug", "use_dbus", "use_ipv6", "foreground"):

1880

for option in ("debug", "use_dbus", "use_ipv6"):

2844

1881

server_settings[option] = server_config.getboolean("DEFAULT",

2845

1882

option)

2846

1883

if server_settings["port"]:

2847

1884

server_settings["port"] = server_config.getint("DEFAULT",

2848

1885

"port")

2849

if server_settings["socket"]:

2850

server_settings["socket"] = server_config.getint("DEFAULT",

2851

"socket")

2852

# Later, stdin will, and stdout and stderr might, be dup'ed

2853

# over with an opened os.devnull. But we don't want this to

2854

# happen with a supplied network socket.

2855

if 0 <= server_settings["socket"] <= 2:

2856

server_settings["socket"] = os.dup(server_settings

2857

["socket"])

2858

1886

del server_config

2859

1887

2860

1888

# Override the settings from the config file with command line

2861

1889

# options, if set.

2862

1890

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

2863

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

2864

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

2865

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

1891

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

1892

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

2866

1893

value = getattr(options, option)

2867

1894

if value is not None:

2868

1895

server_settings[option] = value

2869

1896

del options

2870

1897

# Force all strings to be unicode

2871

1898

for option in server_settings.keys():

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])

2879

# Debug implies foreground

2880

if server_settings["debug"]:

2881

server_settings["foreground"] = True

1899

if type(server_settings[option]) is str:

1900

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

2882

1901

# Now we have our good server settings in "server_settings"

2883

1902

2884

1903

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

2885

1904

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

2891

1905

# For convenience

2892

1906

debug = server_settings["debug"]

2893

1907

debuglevel = server_settings["debuglevel"]

2894

1908

use_dbus = server_settings["use_dbus"]

2895

1909

use_ipv6 = server_settings["use_ipv6"]

2896

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

2897

stored_state_file)

2898

foreground = server_settings["foreground"]

2899

zeroconf = server_settings["zeroconf"]

2900

2901

if debug:

2902

initlogger(debug, logging.DEBUG)

2903

else:

2904

if not debuglevel:

2905

initlogger(debug)

2906

else:

2907

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

2908

initlogger(debug, level)

2909

1910

2910

1911

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

2911

syslogger.setFormatter(

2912

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

2913

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

2914

server_settings["servicename"])))

1912

syslogger.setFormatter(logging.Formatter

1913

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

1914

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

1915

% server_settings["servicename"]))

2915

1916

2916

1917

# Parse config file with clients

2917

client_config = configparser.SafeConfigParser(Client

2918

.client_defaults)

1918

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

1919

"extended_timeout": "15m",

1920

"interval": "2m",

1921

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

1922

"host": "",

1923

"approval_delay": "0s",

1924

"approval_duration": "1s",

1925

}

1926

client_config = configparser.SafeConfigParser(client_defaults)

2919

1927

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

2920

1928

"clients.conf"))

2921

1929

2922

1930

global mandos_dbus_service

2923

1931

mandos_dbus_service = None

2924

1932

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)

2936

if not foreground:

2937

pidfilename = "/run/mandos.pid"

2938

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

2939

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

2940

pidfile = None

1933

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

1934

server_settings["port"]),

1935

ClientHandler,

1936

interface=(server_settings["interface"]

1937

or None),

1938

use_ipv6=use_ipv6,

1939

gnutls_priority=

1940

server_settings["priority"],

1941

use_dbus=use_dbus)

1942

if not debug:

1943

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

2941

1944

try:

2942

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

2943

except IOError as e:

2944

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

2945

exc_info=e)

1945

pidfile = open(pidfilename, "w")

1946

except IOError:

1947

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

2946

1948

2947

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

2948

("mandos", "mandos"),

2949

("nobody", "nogroup")):

1949

try:

1950

uid = pwd.getpwnam("_mandos").pw_uid

1951

gid = pwd.getpwnam("_mandos").pw_gid

1952

except KeyError:

2950

1953

try:

2951

uid = pwd.getpwnam(name).pw_uid

2952

gid = pwd.getpwnam(group).pw_gid

2953

break

1954

uid = pwd.getpwnam("mandos").pw_uid

1955

gid = pwd.getpwnam("mandos").pw_gid

2954

1956

except KeyError:

2955

continue

2956

else:

2957

uid = 65534

2958

gid = 65534

1957

try:

1958

uid = pwd.getpwnam("nobody").pw_uid

1959

gid = pwd.getpwnam("nobody").pw_gid

1960

except KeyError:

1961

uid = 65534

1962

gid = 65534

2959

1963

try:

2960

1964

os.setgid(gid)

2961

1965

os.setuid(uid)

2962

if debug:

2963

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

2964

gid))

2965

1966

except OSError as error:

2966

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

2967

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

2968

if error.errno != errno.EPERM:

2969

raise

1967

if error[0] != errno.EPERM:

1968

raise error

1969

1970

if not debug and not debuglevel:

1971

syslogger.setLevel(logging.WARNING)

1972

console.setLevel(logging.WARNING)

1973

if debuglevel:

1974

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

1975

syslogger.setLevel(level)

1976

console.setLevel(level)

2970

1977

2971

1978

if debug:

2972

1979

# Enable all possible GnuTLS debugging

2973

1980

2974

1981

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

2975

1982

# - GnuTLS manual

2976

gnutls.global_set_log_level(11)

1983

gnutls.library.functions.gnutls_global_set_log_level(11)

2977

1984

2978

@gnutls.log_func

1985

@gnutls.library.types.gnutls_log_func

2979

1986

def debug_gnutls(level, string):

2980

1987

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

2981

1988

2982

gnutls.global_set_log_function(debug_gnutls)

1989

(gnutls.library.functions

1990

.gnutls_global_set_log_function(debug_gnutls))

2983

1991

2984

1992

# Redirect stdin so all checkers get /dev/null

2985

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

1993

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

2986

1994

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

2987

1995

if null > 2:

2988

1996

os.close(null)

1997

else:

1998

# No console logging

1999

logger.removeHandler(console)

2989

2000

2990

2001

# Need to fork before connecting to D-Bus

2991

if not foreground:

2002

if not debug:

2992

2003

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

2993

2004

daemon()

2994

2005

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()

2998

2999

2006

global main_loop

3000

2007

# From the Avahi example code

3001

DBusGMainLoop(set_as_default=True)

3002

main_loop = GLib.MainLoop()

2008

DBusGMainLoop(set_as_default=True )

2009

main_loop = gobject.MainLoop()

3003

2010

bus = dbus.SystemBus()

3004

2011

# End of Avahi example code

3005

2012

if use_dbus:

3006

2013

try:

3007

2014

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

3008

bus,

3009

do_not_queue=True)

3010

old_bus_name = dbus.service.BusName(

3011

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

3012

do_not_queue=True)

3013

except dbus.exceptions.DBusException as e:

3014

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

2015

bus, do_not_queue=True)

2016

old_bus_name = (dbus.service.BusName

2017

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

2018

do_not_queue=True))

2019

except dbus.exceptions.NameExistsException as e:

2020

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

3015

2021

use_dbus = False

3016

2022

server_settings["use_dbus"] = False

3017

2023

tcp_server.use_dbus = False

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"))

2024

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2025

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

2026

servicetype = "_mandos._tcp",

2027

protocol = protocol, bus = bus)

2028

if server_settings["interface"]:

2029

service.interface = (if_nametoindex

2030

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

3028

2031

3029

2032

global multiprocessing_manager

3030

2033

multiprocessing_manager = multiprocessing.Manager()

3031

2034

3032

2035

client_class = Client

3033

2036

if use_dbus:

3034

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

3035

3036

client_settings = Client.config_parser(client_config)

3037

old_client_settings = {}

3038

clients_data = {}

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

3048

# Get client data and settings from last running state.

3049

if server_settings["restore"]:

3050

try:

3051

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

3052

if sys.version_info.major == 2:

3053

clients_data, old_client_settings = pickle.load(

3054

stored_state)

3055

else:

3056

bytes_clients_data, bytes_old_client_settings = (

3057

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

3058

### Fix bytes to strings

3059

## clients_data

3060

# .keys()

3061

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

3062

if isinstance(key, bytes)

3063

else key): value

3064

for key, value in

3065

bytes_clients_data.items() }

3066

del bytes_clients_data

3067

for key in clients_data:

3068

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

3069

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

3070

for k, v in

3071

clients_data[key].items() }

3072

clients_data[key] = value

3073

# .client_structure

3074

value["client_structure"] = [

3075

(s.decode("utf-8")

3076

if isinstance(s, bytes)

3077

else s) for s in

3078

value["client_structure"] ]

3079

# .name & .host

3080

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

3081

if isinstance(value[k], bytes):

3082

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

3083

## old_client_settings

3084

# .keys()

3085

old_client_settings = {

3086

(key.decode("utf-8")

3087

if isinstance(key, bytes)

3088

else key): value

3089

for key, value in

3090

bytes_old_client_settings.items() }

3091

del bytes_old_client_settings

3092

# .host

3093

for value in old_client_settings.values():

3094

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

3095

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

3096

.decode("utf-8"))

3097

os.remove(stored_state_path)

3098

except IOError as e:

3099

if e.errno == errno.ENOENT:

3100

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

3101

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

3102

else:

3103

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

3104

exc_info=e)

3105

raise

3106

except EOFError as e:

3107

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

3108

"EOFError:",

3109

exc_info=e)

3110

3111

with PGPEngine() as pgp:

3112

for client_name, client in clients_data.items():

3113

# Skip removed clients

3114

if client_name not in client_settings:

3115

continue

3116

3117

# Decide which value to use after restoring saved state.

3118

# We have three different values: Old config file,

3119

# new config file, and saved state.

3120

# New config value takes precedence if it differs from old

3121

# config value, otherwise use saved state.

3122

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

3123

try:

3124

# For each value in new config, check if it

3125

# differs from the old config value (Except for

3126

# the "secret" attribute)

3127

if (name != "secret"

3128

and (value !=

3129

old_client_settings[client_name][name])):

3130

client[name] = value

3131

except KeyError:

3132

pass

3133

3134

# Clients who has passed its expire date can still be

3135

# enabled if its last checker was successful. A Client

3136

# whose checker succeeded before we stored its state is

3137

# assumed to have successfully run all checkers during

3138

# downtime.

3139

if client["enabled"]:

3140

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

3141

if not client["last_checked_ok"]:

3142

logger.warning(

3143

"disabling client {} - Client never "

3144

"performed a successful checker".format(

3145

client_name))

3146

client["enabled"] = False

3147

elif client["last_checker_status"] != 0:

3148

logger.warning(

3149

"disabling client {} - Client last"

3150

" checker failed with error code"

3151

" {}".format(

3152

client_name,

3153

client["last_checker_status"]))

3154

client["enabled"] = False

3155

else:

3156

client["expires"] = (

3157

datetime.datetime.utcnow()

3158

+ client["timeout"])

3159

logger.debug("Last checker succeeded,"

3160

" keeping {} enabled".format(

3161

client_name))

2037

client_class = functools.partial(ClientDBusTransitional,

2038

bus = bus)

2039

def client_config_items(config, section):

2040

special_settings = {

2041

"approved_by_default":

2042

lambda: config.getboolean(section,

2043

"approved_by_default"),

2044

}

2045

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

3162

2046

try:

3163

client["secret"] = pgp.decrypt(

3164

client["encrypted_secret"],

3165

client_settings[client_name]["secret"])

3166

except PGPError:

3167

# If decryption fails, we use secret from new settings

3168

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

3169

client_name))

3170

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

3171

["secret"])

3172

3173

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

3174

for client_name in (set(old_client_settings)

3175

- set(client_settings)):

3176

del clients_data[client_name]

3177

for client_name in (set(client_settings)

3178

- set(old_client_settings)):

3179

clients_data[client_name] = client_settings[client_name]

3180

3181

# Create all client objects

3182

for client_name, client in clients_data.items():

3183

tcp_server.clients[client_name] = client_class(

3184

name = client_name,

3185

settings = client,

3186

server_settings = server_settings)

3187

2047

yield (name, special_settings[name]())

2048

except KeyError:

2049

yield (name, value)

2050

2051

tcp_server.clients.update(set(

2052

client_class(name = section,

2053

config= dict(client_config_items(

2054

client_config, section)))

2055

for section in client_config.sections()))

3188

2056

if not tcp_server.clients:

3189

2057

logger.warning("No clients defined")

3190

3191

if not foreground:

3192

if pidfile is not None:

3193

pid = os.getpid()

3194

try:

3195

with pidfile:

3196

print(pid, file=pidfile)

3197

except IOError:

3198

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

3199

pidfilename, pid)

3200

del pidfile

2058

2059

if not debug:

2060

try:

2061

with pidfile:

2062

pid = os.getpid()

2063

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

2064

del pidfile

2065

except IOError:

2066

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

2067

pidfilename, pid)

2068

except NameError:

2069

# "pidfile" was never created

2070

pass

3201

2071

del pidfilename

2072

2073

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

3202

2074

3203

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

3204

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3205

lambda: main_loop.quit() and False)

2075

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

2076

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

3206

2077

3207

2078

if use_dbus:

3208

3209

@alternate_dbus_interfaces(

3210

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

3211

class MandosDBusService(DBusObjectWithObjectManager):

2079

class MandosDBusService(dbus.service.Object):

3212

2080

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

3213

3214

2081

def __init__(self):

3215

2082

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

3216

3217

2083

_interface = "se.recompile.Mandos"

3218

2084

3219

2085

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

3226

2092

"D-Bus signal"

3227

2093

pass

3228

2094

3229

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

3230

"true"})

3231

2095

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

3232

2096

def ClientRemoved(self, objpath, name):

3233

2097

"D-Bus signal"

3234

2098

pass

3235

2099

3236

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

3237

"true"})

3238

2100

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

3239

2101

def GetAllClients(self):

3240

2102

"D-Bus method"

3241

return dbus.Array(c.dbus_object_path for c in

3242

tcp_server.clients.values())

2103

return dbus.Array(c.dbus_object_path

2104

for c in tcp_server.clients)

3243

2105

3244

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

3245

"true"})

3246

2106

@dbus.service.method(_interface,

3247

2107

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

3248

2108

def GetAllClientsWithProperties(self):

3249

2109

"D-Bus method"

3250

2110

return dbus.Dictionary(

3251

{ c.dbus_object_path: c.GetAll(

3252

"se.recompile.Mandos.Client")

3253

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

2111

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

2112

for c in tcp_server.clients),

3254

2113

signature="oa{sv}")

3255

2114

3256

2115

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

3257

2116

def RemoveClient(self, object_path):

3258

2117

"D-Bus method"

3259

for c in tcp_server.clients.values():

2118

for c in tcp_server.clients:

3260

2119

if c.dbus_object_path == object_path:

3261

del tcp_server.clients[c.name]

2120

tcp_server.clients.remove(c)

3262

2121

c.remove_from_connection()

3263

# Don't signal the disabling

2122

# Don't signal anything except ClientRemoved

3264

2123

c.disable(quiet=True)

3265

# Emit D-Bus signal for removal

3266

self.client_removed_signal(c)

2124

# Emit D-Bus signal

2125

self.ClientRemoved(object_path, c.name)

3267

2126

return

3268

2127

raise KeyError(object_path)

3269

2128

3270

2129

del _interface

3271

3272

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3273

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

3274

def GetManagedObjects(self):

3275

"""D-Bus method"""

3276

return dbus.Dictionary(

3277

{ client.dbus_object_path:

3278

dbus.Dictionary(

3279

{ interface: client.GetAll(interface)

3280

for interface in

3281

client._get_all_interface_names()})

3282

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

3283

3284

def client_added_signal(self, client):

3285

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

3286

if use_dbus:

3287

# New standard signal

3288

self.InterfacesAdded(

3289

client.dbus_object_path,

3290

dbus.Dictionary(

3291

{ interface: client.GetAll(interface)

3292

for interface in

3293

client._get_all_interface_names()}))

3294

# Old signal

3295

self.ClientAdded(client.dbus_object_path)

3296

3297

def client_removed_signal(self, client):

3298

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

3299

if use_dbus:

3300

# New standard signal

3301

self.InterfacesRemoved(

3302

client.dbus_object_path,

3303

client._get_all_interface_names())

3304

# Old signal

3305

self.ClientRemoved(client.dbus_object_path,

3306

client.name)

3307

2130

3308

mandos_dbus_service = MandosDBusService()

2131

class MandosDBusServiceTransitional(MandosDBusService):

2132

__metaclass__ = AlternateDBusNamesMetaclass

2133

mandos_dbus_service = MandosDBusServiceTransitional()

3309

2134

3310

2135

def cleanup():

3311

2136

"Cleanup function; run on exit"

3312

if zeroconf:

3313

service.cleanup()

2137

service.cleanup()

3314

2138

3315

2139

multiprocessing.active_children()

3316

wnull.close()

3317

if not (tcp_server.clients or client_settings):

3318

return

3319

3320

# Store client before exiting. Secrets are encrypted with key

3321

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

3322

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

3323

clients = {}

3324

with PGPEngine() as pgp:

3325

for client in tcp_server.clients.values():

3326

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

3327

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

3328

key)

3329

client_dict = {}

3330

3331

# A list of attributes that can not be pickled

3332

# + secret.

3333

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

3334

"checker", "server_settings" }

3335

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

3336

.Object):

3337

exclude.add(name)

3338

3339

client_dict["encrypted_secret"] = (client

3340

.encrypted_secret)

3341

for attr in client.client_structure:

3342

if attr not in exclude:

3343

client_dict[attr] = getattr(client, attr)

3344

3345

clients[client.name] = client_dict

3346

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

3347

3348

try:

3349

with tempfile.NamedTemporaryFile(

3350

mode='wb',

3351

suffix=".pickle",

3352

prefix='clients-',

3353

dir=os.path.dirname(stored_state_path),

3354

delete=False) as stored_state:

3355

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

3356

protocol = 2)

3357

tempname = stored_state.name

3358

os.rename(tempname, stored_state_path)

3359

except (IOError, OSError) as e:

3360

if not debug:

3361

try:

3362

os.remove(tempname)

3363

except NameError:

3364

pass

3365

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

3366

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

3367

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

3368

else:

3369

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

3370

exc_info=e)

3371

raise

3372

3373

# Delete all clients, and settings from config

3374

2140

while tcp_server.clients:

3375

name, client = tcp_server.clients.popitem()

2141

client = tcp_server.clients.pop()

3376

2142

if use_dbus:

3377

2143

client.remove_from_connection()

3378

# Don't signal the disabling

2144

client.disable_hook = None

2145

# Don't signal anything except ClientRemoved

3379

2146

client.disable(quiet=True)

3380

# Emit D-Bus signal for removal

3381

2147

if use_dbus:

3382

mandos_dbus_service.client_removed_signal(client)

3383

client_settings.clear()

2148

# Emit D-Bus signal

2149

mandos_dbus_service.ClientRemoved(client

2150

.dbus_object_path,

2151

client.name)

3384

2152

3385

2153

atexit.register(cleanup)

3386

2154

3387

for client in tcp_server.clients.values():

2155

for client in tcp_server.clients:

3388

2156

if use_dbus:

3389

# Emit D-Bus signal for adding

3390

mandos_dbus_service.client_added_signal(client)

3391

# Need to initiate checking of clients

3392

if client.enabled:

3393

client.init_checker()

2157

# Emit D-Bus signal

2158

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2159

client.enable()

3394

2160

3395

2161

tcp_server.enable()

3396

2162

tcp_server.server_activate()

3397

2163

3398

2164

# Find out what port we got

3399

if zeroconf:

3400

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

2165

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

3401

2166

if use_ipv6:

3402

2167

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

3403

" flowinfo %d, scope_id %d",

3404

*tcp_server.socket.getsockname())

2168

" flowinfo %d, scope_id %d"

2169

% tcp_server.socket.getsockname())

3405

2170

else: # IPv4

3406

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

3407

*tcp_server.socket.getsockname())

2171

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

2172

% tcp_server.socket.getsockname())

3408

2173

3409

2174

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

3410

2175

3411

2176

try:

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

2177

# From the Avahi example code

2178

try:

2179

service.activate()

2180

except dbus.exceptions.DBusException as error:

2181

logger.critical("DBusException: %s", error)

2182

cleanup()

2183

sys.exit(1)

2184

# End of Avahi example code

3421

2185

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))

2186

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

2187

lambda *args, **kwargs:

2188

(tcp_server.handle_request

2189

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

3426

2190

3427

2191

logger.debug("Starting main loop")

3428

2192

main_loop.run()

3429

2193

except AvahiError as error:

3430

logger.critical("Avahi Error", exc_info=error)

2194

logger.critical("AvahiError: %s", error)

3431

2195

cleanup()

3432

2196

sys.exit(1)

3433

2197

except KeyboardInterrupt: