/mandos/trunk : revision 518.1.1

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

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

18

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

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

from future_builtins import *

38

39

try:

40

import SocketServer as socketserver

41

except ImportError:

42

import socketserver

37

import SocketServer as socketserver

43

38

import socket

44

39

import argparse

45

40

import datetime

46

41

import errno

47

try:

48

import ConfigParser as configparser

49

except ImportError:

50

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

51

49

import sys

52

50

import re

53

51

import os

62

60

import struct

63

61

import fcntl

64

62

import functools

65

try:

66

import cPickle as pickle

67

except ImportError:

68

import pickle

63

import cPickle as pickle

69

64

import multiprocessing

70

65

import types

71

import binascii

72

import tempfile

73

import itertools

74

import collections

75

import codecs

66

import hashlib

76

67

77

68

import dbus

78

69

import dbus.service

79

try:

80

import gobject

81

except ImportError:

82

from gi.repository import GObject as gobject

70

import gobject

83

71

import avahi

84

72

from dbus.mainloop.glib import DBusGMainLoop

85

73

import ctypes

86

74

import ctypes.util

87

75

import xml.dom.minidom

88

76

import inspect

77

import Crypto.Cipher.AES

89

78

90

79

try:

91

80

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

95

84

except ImportError:

96

85

SO_BINDTODEVICE = None

97

86

98

if sys.version_info.major == 2:

99

str = unicode

100

101

version = "1.7.3"

102

stored_state_file = "clients.pickle"

103

104

logger = logging.getLogger()

105

syslogger = None

106

107

try:

108

if_nametoindex = ctypes.cdll.LoadLibrary(

109

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

110

except (OSError, AttributeError):

111

112

def if_nametoindex(interface):

113

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

114

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

115

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

116

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

117

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

118

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

119

return interface_index

120

121

122

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

123

"""init logger and add loglevel"""

124

125

global syslogger

126

syslogger = (logging.handlers.SysLogHandler(

127

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

128

address = "/dev/log"))

129

syslogger.setFormatter(logging.Formatter

130

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

131

' %(message)s'))

132

logger.addHandler(syslogger)

133

134

if debug:

135

console = logging.StreamHandler()

136

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

137

' [%(process)d]:'

138

' %(levelname)s:'

139

' %(message)s'))

140

logger.addHandler(console)

141

logger.setLevel(level)

142

143

144

class PGPError(Exception):

145

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

146

pass

147

148

149

class PGPEngine(object):

150

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

151

152

def __init__(self):

153

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

154

self.gpg = "gpg"

155

try:

156

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

157

for line in output.splitlines():

158

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

159

if name == "gpg":

160

self.gpg = path

161

break

162

except OSError as e:

163

if e.errno != errno.ENOENT:

164

raise

165

self.gnupgargs = ['--batch',

166

'--homedir', self.tempdir,

167

'--force-mdc',

168

'--quiet',

169

'--no-use-agent']

170

171

def __enter__(self):

172

return self

173

174

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

175

self._cleanup()

176

return False

177

178

def __del__(self):

179

self._cleanup()

180

181

def _cleanup(self):

182

if self.tempdir is not None:

183

# Delete contents of tempdir

184

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

185

topdown = False):

186

for filename in files:

187

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

188

for dirname in dirs:

189

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

190

# Remove tempdir

191

os.rmdir(self.tempdir)

192

self.tempdir = None

193

194

def password_encode(self, password):

195

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

196

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

197

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

198

if len(encoded) > 2048:

199

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

200

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

201

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

202

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

203

return encoded

204

205

def encrypt(self, data, password):

206

passphrase = self.password_encode(password)

207

with tempfile.NamedTemporaryFile(

208

dir=self.tempdir) as passfile:

209

passfile.write(passphrase)

210

passfile.flush()

211

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

212

'--passphrase-file',

213

passfile.name]

214

+ self.gnupgargs,

215

stdin = subprocess.PIPE,

216

stdout = subprocess.PIPE,

217

stderr = subprocess.PIPE)

218

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

219

if proc.returncode != 0:

220

raise PGPError(err)

221

return ciphertext

222

223

def decrypt(self, data, password):

224

passphrase = self.password_encode(password)

225

with tempfile.NamedTemporaryFile(

226

dir = self.tempdir) as passfile:

227

passfile.write(passphrase)

228

passfile.flush()

229

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

230

'--passphrase-file',

231

passfile.name]

232

+ self.gnupgargs,

233

stdin = subprocess.PIPE,

234

stdout = subprocess.PIPE,

235

stderr = subprocess.PIPE)

236

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

237

if proc.returncode != 0:

238

raise PGPError(err)

239

return decrypted_plaintext

240

87

88

version = "1.4.1"

89

90

stored_state_path = "/var/lib/mandos/clients.pickle"

91

92

#logger = logging.getLogger('mandos')

93

logger = logging.Logger('mandos')

94

syslogger = (logging.handlers.SysLogHandler

95

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

96

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

97

syslogger.setFormatter(logging.Formatter

98

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

99

' %(message)s'))

100

logger.addHandler(syslogger)

101

102

console = logging.StreamHandler()

103

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

104

' %(levelname)s:'

105

' %(message)s'))

106

logger.addHandler(console)

241

107

242

108

class AvahiError(Exception):

243

109

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

244

110

self.value = value

245

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

246

**kwargs)

247

111

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

112

def __unicode__(self):

113

return unicode(repr(self.value))

248

114

249

115

class AvahiServiceError(AvahiError):

250

116

pass

251

117

252

253

118

class AvahiGroupError(AvahiError):

254

119

pass

255

120

262

127

Used to optionally bind to the specified interface.

263

128

name: string; Example: 'Mandos'

264

129

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

265

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

130

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

266

131

port: integer; what port to announce

267

132

TXT: list of strings; TXT record for the service

268

133

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

274

139

server: D-Bus Server

275

140

bus: dbus.SystemBus()

276

141

"""

277

278

def __init__(self,

279

interface = avahi.IF_UNSPEC,

280

name = None,

281

servicetype = None,

282

port = None,

283

TXT = None,

284

domain = "",

285

host = "",

286

max_renames = 32768,

287

protocol = avahi.PROTO_UNSPEC,

288

bus = None):

142

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

143

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

144

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

145

protocol = avahi.PROTO_UNSPEC, bus = None):

289

146

self.interface = interface

290

147

self.name = name

291

148

self.type = servicetype

300

157

self.server = None

301

158

self.bus = bus

302

159

self.entry_group_state_changed_match = None

303

304

def rename(self, remove=True):

160

def rename(self):

305

161

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

306

162

if self.rename_count >= self.max_renames:

307

163

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

308

164

" after %i retries, exiting.",

309

165

self.rename_count)

310

166

raise AvahiServiceError("Too many renames")

311

self.name = str(

312

self.server.GetAlternativeServiceName(self.name))

313

self.rename_count += 1

167

self.name = unicode(self.server

168

.GetAlternativeServiceName(self.name))

314

169

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

315

170

self.name)

316

if remove:

317

self.remove()

171

syslogger.setFormatter(logging.Formatter

172

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

173

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

174

% self.name))

175

self.remove()

318

176

try:

319

177

self.add()

320

178

except dbus.exceptions.DBusException as error:

321

if (error.get_dbus_name()

322

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

323

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

324

return self.rename(remove=False)

325

else:

326

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

327

self.cleanup()

328

os._exit(1)

329

179

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

180

self.cleanup()

181

os._exit(1)

182

self.rename_count += 1

330

183

def remove(self):

331

184

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

332

185

if self.entry_group_state_changed_match is not None:

334

187

self.entry_group_state_changed_match = None

335

188

if self.group is not None:

336

189

self.group.Reset()

337

338

190

def add(self):

339

191

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

340

192

self.remove()

345

197

avahi.DBUS_INTERFACE_ENTRY_GROUP)

346

198

self.entry_group_state_changed_match = (

347

199

self.group.connect_to_signal(

348

'StateChanged', self.entry_group_state_changed))

200

'StateChanged', self .entry_group_state_changed))

349

201

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

350

202

self.name, self.type)

351

203

self.group.AddService(

357

209

dbus.UInt16(self.port),

358

210

avahi.string_array_to_txt_array(self.TXT))

359

211

self.group.Commit()

360

361

212

def entry_group_state_changed(self, state, error):

362

213

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

363

214

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

369

220

self.rename()

370

221

elif state == avahi.ENTRY_GROUP_FAILURE:

371

222

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

372

str(error))

373

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

374

223

unicode(error))

224

raise AvahiGroupError("State changed: %s"

225

% unicode(error))

375

226

def cleanup(self):

376

227

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

377

228

if self.group is not None:

378

229

try:

379

230

self.group.Free()

380

231

except (dbus.exceptions.UnknownMethodException,

381

dbus.exceptions.DBusException):

232

dbus.exceptions.DBusException) as e:

382

233

pass

383

234

self.group = None

384

235

self.remove()

385

386

236

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

387

237

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

388

238

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

389

bad_states = {

390

avahi.SERVER_INVALID: "Zeroconf server invalid",

391

avahi.SERVER_REGISTERING: None,

392

avahi.SERVER_COLLISION: "Zeroconf server name collision",

393

avahi.SERVER_FAILURE: "Zeroconf server failure",

394

}

239

bad_states = { avahi.SERVER_INVALID:

240

"Zeroconf server invalid",

241

avahi.SERVER_REGISTERING: None,

242

avahi.SERVER_COLLISION:

243

"Zeroconf server name collision",

244

avahi.SERVER_FAILURE:

245

"Zeroconf server failure" }

395

246

if state in bad_states:

396

247

if bad_states[state] is not None:

397

248

if error is None:

400

251

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

401

252

self.cleanup()

402

253

elif state == avahi.SERVER_RUNNING:

403

try:

404

self.add()

405

except dbus.exceptions.DBusException as error:

406

if (error.get_dbus_name()

407

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

408

logger.info("Local Zeroconf service name"

409

" collision.")

410

return self.rename(remove=False)

411

else:

412

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

413

self.cleanup()

414

os._exit(1)

254

self.add()

415

255

else:

416

256

if error is None:

417

257

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

418

258

else:

419

259

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

420

421

260

def activate(self):

422

261

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

423

262

if self.server is None:

427

266

follow_name_owner_changes=True),

428

267

avahi.DBUS_INTERFACE_SERVER)

429

268

self.server.connect_to_signal("StateChanged",

430

self.server_state_changed)

269

self.server_state_changed)

431

270

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

432

271

433

272

434

class AvahiServiceToSyslog(AvahiService):

435

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

436

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

437

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

438

syslogger.setFormatter(logging.Formatter(

439

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

440

.format(self.name)))

441

return ret

442

443

# Pretend that we have a GnuTLS module

444

class GnuTLS(object):

445

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

446

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

447

448

_library = ctypes.cdll.LoadLibrary(

449

ctypes.util.find_library("gnutls"))

450

_need_version = "3.3.0"

451

def __init__(self):

452

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

453

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

454

# happens.

455

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

456

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

457

.format(self._need_version))

458

459

# Unless otherwise indicated, the constants and types below are

460

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

461

462

# Constants

463

E_SUCCESS = 0

464

E_INTERRUPTED = -52

465

E_AGAIN = -28

466

CRT_OPENPGP = 2

467

CLIENT = 2

468

SHUT_RDWR = 0

469

CRD_CERTIFICATE = 1

470

E_NO_CERTIFICATE_FOUND = -49

471

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

472

473

# Types

474

class session_int(ctypes.Structure):

475

_fields_ = []

476

session_t = ctypes.POINTER(session_int)

477

class certificate_credentials_st(ctypes.Structure):

478

_fields_ = []

479

certificate_credentials_t = ctypes.POINTER(

480

certificate_credentials_st)

481

certificate_type_t = ctypes.c_int

482

class datum_t(ctypes.Structure):

483

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

484

('size', ctypes.c_uint)]

485

class openpgp_crt_int(ctypes.Structure):

486

_fields_ = []

487

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

488

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

489

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

490

credentials_type_t = ctypes.c_int #

491

transport_ptr_t = ctypes.c_void_p

492

close_request_t = ctypes.c_int

493

494

# Exceptions

495

class Error(Exception):

496

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

497

# exception might be raised from within GnuTLS.__init__,

498

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

499

# global variable has happened.

500

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

501

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

502

# code is passed, convert it to a string with

503

# gnutls.strerror()

504

self.code = code

505

if message is None and code is not None:

506

message = GnuTLS.strerror(code)

507

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

508

message, *args)

509

510

class CertificateSecurityError(Error):

511

pass

512

513

# Classes

514

class Credentials(object):

515

def __init__(self):

516

self._c_object = gnutls.certificate_credentials_t()

517

gnutls.certificate_allocate_credentials(

518

ctypes.byref(self._c_object))

519

self.type = gnutls.CRD_CERTIFICATE

520

521

def __del__(self):

522

gnutls.certificate_free_credentials(self._c_object)

523

524

class ClientSession(object):

525

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

526

self._c_object = gnutls.session_t()

527

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

528

gnutls.set_default_priority(self._c_object)

529

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

530

gnutls.handshake_set_private_extensions(self._c_object,

531

True)

532

self.socket = socket

533

if credentials is None:

534

credentials = gnutls.Credentials()

535

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

536

ctypes.cast(credentials._c_object,

537

ctypes.c_void_p))

538

self.credentials = credentials

539

540

def __del__(self):

541

gnutls.deinit(self._c_object)

542

543

def handshake(self):

544

return gnutls.handshake(self._c_object)

545

546

def send(self, data):

547

data = bytes(data)

548

data_len = len(data)

549

while data_len > 0:

550

data_len -= gnutls.record_send(self._c_object,

551

data[-data_len:],

552

data_len)

553

554

def bye(self):

555

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

556

557

# Error handling functions

558

def _error_code(result):

559

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

560

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

561

if result >= 0:

562

return result

563

if result == gnutls.E_NO_CERTIFICATE_FOUND:

564

raise gnutls.CertificateSecurityError(code = result)

565

raise gnutls.Error(code = result)

566

567

def _retry_on_error(result, func, arguments):

568

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

569

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

570

while result < 0:

571

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

572

return _error_code(result)

573

result = func(*arguments)

574

return result

575

576

# Unless otherwise indicated, the function declarations below are

577

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

578

579

# Functions

580

priority_set_direct = _library.gnutls_priority_set_direct

581

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

582

ctypes.POINTER(ctypes.c_char_p)]

583

priority_set_direct.restype = _error_code

584

585

init = _library.gnutls_init

586

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

587

init.restype = _error_code

588

589

set_default_priority = _library.gnutls_set_default_priority

590

set_default_priority.argtypes = [session_t]

591

set_default_priority.restype = _error_code

592

593

record_send = _library.gnutls_record_send

594

record_send.argtypes = [session_t, ctypes.c_void_p,

595

ctypes.c_size_t]

596

record_send.restype = ctypes.c_ssize_t

597

record_send.errcheck = _retry_on_error

598

599

certificate_allocate_credentials = (

600

_library.gnutls_certificate_allocate_credentials)

601

certificate_allocate_credentials.argtypes = [

602

ctypes.POINTER(certificate_credentials_t)]

603

certificate_allocate_credentials.restype = _error_code

604

605

certificate_free_credentials = (

606

_library.gnutls_certificate_free_credentials)

607

certificate_free_credentials.argtypes = [certificate_credentials_t]

608

certificate_free_credentials.restype = None

609

610

handshake_set_private_extensions = (

611

_library.gnutls_handshake_set_private_extensions)

612

handshake_set_private_extensions.argtypes = [session_t,

613

ctypes.c_int]

614

handshake_set_private_extensions.restype = None

615

616

credentials_set = _library.gnutls_credentials_set

617

credentials_set.argtypes = [session_t, credentials_type_t,

618

ctypes.c_void_p]

619

credentials_set.restype = _error_code

620

621

strerror = _library.gnutls_strerror

622

strerror.argtypes = [ctypes.c_int]

623

strerror.restype = ctypes.c_char_p

624

625

certificate_type_get = _library.gnutls_certificate_type_get

626

certificate_type_get.argtypes = [session_t]

627

certificate_type_get.restype = _error_code

628

629

certificate_get_peers = _library.gnutls_certificate_get_peers

630

certificate_get_peers.argtypes = [session_t,

631

ctypes.POINTER(ctypes.c_uint)]

632

certificate_get_peers.restype = ctypes.POINTER(datum_t)

633

634

global_set_log_level = _library.gnutls_global_set_log_level

635

global_set_log_level.argtypes = [ctypes.c_int]

636

global_set_log_level.restype = None

637

638

global_set_log_function = _library.gnutls_global_set_log_function

639

global_set_log_function.argtypes = [log_func]

640

global_set_log_function.restype = None

641

642

deinit = _library.gnutls_deinit

643

deinit.argtypes = [session_t]

644

deinit.restype = None

645

646

handshake = _library.gnutls_handshake

647

handshake.argtypes = [session_t]

648

handshake.restype = _error_code

649

handshake.errcheck = _retry_on_error

650

651

transport_set_ptr = _library.gnutls_transport_set_ptr

652

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

653

transport_set_ptr.restype = None

654

655

bye = _library.gnutls_bye

656

bye.argtypes = [session_t, close_request_t]

657

bye.restype = _error_code

658

bye.errcheck = _retry_on_error

659

660

check_version = _library.gnutls_check_version

661

check_version.argtypes = [ctypes.c_char_p]

662

check_version.restype = ctypes.c_char_p

663

664

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

665

666

openpgp_crt_init = _library.gnutls_openpgp_crt_init

667

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

668

openpgp_crt_init.restype = _error_code

669

670

openpgp_crt_import = _library.gnutls_openpgp_crt_import

671

openpgp_crt_import.argtypes = [openpgp_crt_t,

672

ctypes.POINTER(datum_t),

673

openpgp_crt_fmt_t]

674

openpgp_crt_import.restype = _error_code

675

676

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

677

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

678

ctypes.POINTER(ctypes.c_uint)]

679

openpgp_crt_verify_self.restype = _error_code

680

681

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

682

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

683

openpgp_crt_deinit.restype = None

684

685

openpgp_crt_get_fingerprint = (

686

_library.gnutls_openpgp_crt_get_fingerprint)

687

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

688

ctypes.c_void_p,

689

ctypes.POINTER(

690

ctypes.c_size_t)]

691

openpgp_crt_get_fingerprint.restype = _error_code

692

693

# Remove non-public functions

694

del _error_code, _retry_on_error

695

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

696

gnutls = GnuTLS()

697

698

def call_pipe(connection, # : multiprocessing.Connection

699

func, *args, **kwargs):

700

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

701

702

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

703

return value on the provided multiprocessing.Connection.

704

"""

705

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

706

connection.close()

707

273

def _timedelta_to_milliseconds(td):

274

"Convert a datetime.timedelta() to milliseconds"

275

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

276

+ (td.seconds * 1000)

277

+ (td.microseconds // 1000))

278

708

279

class Client(object):

709

280

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

710

281

711

282

Attributes:

712

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

283

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

713

284

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

714

285

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

715

286

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

733

304

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

734

305

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

735

306

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

736

last_checker_status: integer between 0 and 255 reflecting exit

737

status of last checker. -1 reflects crashed

738

checker, -2 means no checker completed yet.

739

last_checker_signal: The signal which killed the last checker, if

740

last_checker_status is -1

741

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

307

Last_checker_status: integer between 0 and 255 reflecting exit status

308

of last checker. -1 reflect crashed checker.

309

last_enabled: datetime.datetime(); (UTC)

742

310

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

743

311

D-Bus identifiers

744

312

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

745

313

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

746

314

until this client is disabled

747

extended_timeout: extra long timeout when secret has been sent

315

extended_timeout: extra long timeout when password has been sent

748

316

runtime_expansions: Allowed attributes for runtime expansion.

749

317

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

750

318

disabled, or None

751

server_settings: The server_settings dict from main()

752

319

"""

753

320

754

321

runtime_expansions = ("approval_delay", "approval_duration",

755

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

756

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

757

"last_approval_request", "last_checked_ok",

322

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

323

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

758

324

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

759

client_defaults = {

760

"timeout": "PT5M",

761

"extended_timeout": "PT15M",

762

"interval": "PT2M",

763

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

764

"host": "",

765

"approval_delay": "PT0S",

766

"approval_duration": "PT1S",

767

"approved_by_default": "True",

768

"enabled": "True",

769

}

770

771

@staticmethod

772

def config_parser(config):

773

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

774

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

775

with exceptions for any special settings as defined above.

776

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

777

value given the same arguments.

778

"""

779

settings = {}

780

for client_name in config.sections():

781

section = dict(config.items(client_name))

782

client = settings[client_name] = {}

783

784

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

785

# Reformat values from string types to Python types

786

client["approved_by_default"] = config.getboolean(

787

client_name, "approved_by_default")

788

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

789

"enabled")

790

791

# Uppercase and remove spaces from fingerprint for later

792

# comparison purposes with return value from the

793

# fingerprint() function

794

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

795

.replace(" ", ""))

796

if "secret" in section:

797

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

798

elif "secfile" in section:

799

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

800

(section["secfile"])),

801

"rb") as secfile:

802

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

803

else:

804

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

805

.format(section))

806

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

807

client["extended_timeout"] = string_to_delta(

808

section["extended_timeout"])

809

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

810

client["approval_delay"] = string_to_delta(

811

section["approval_delay"])

812

client["approval_duration"] = string_to_delta(

813

section["approval_duration"])

814

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

815

client["last_approval_request"] = None

816

client["last_checked_ok"] = None

817

client["last_checker_status"] = -2

818

819

return settings

820

821

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

325

326

def timeout_milliseconds(self):

327

"Return the 'timeout' attribute in milliseconds"

328

return _timedelta_to_milliseconds(self.timeout)

329

330

def extended_timeout_milliseconds(self):

331

"Return the 'extended_timeout' attribute in milliseconds"

332

return _timedelta_to_milliseconds(self.extended_timeout)

333

334

def interval_milliseconds(self):

335

"Return the 'interval' attribute in milliseconds"

336

return _timedelta_to_milliseconds(self.interval)

337

338

def approval_delay_milliseconds(self):

339

return _timedelta_to_milliseconds(self.approval_delay)

340

341

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

342

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

343

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

344

attribute."""

822

345

self.name = name

823

if server_settings is None:

824

server_settings = {}

825

self.server_settings = server_settings

826

# adding all client settings

827

for setting, value in settings.items():

828

setattr(self, setting, value)

829

830

if self.enabled:

831

if not hasattr(self, "last_enabled"):

832

self.last_enabled = datetime.datetime.utcnow()

833

if not hasattr(self, "expires"):

834

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

835

+ self.timeout)

836

else:

837

self.last_enabled = None

838

self.expires = None

839

346

if config is None:

347

config = {}

840

348

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

349

# Uppercase and remove spaces from fingerprint for later

350

# comparison purposes with return value from the fingerprint()

351

# function

352

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

353

.replace(" ", ""))

841

354

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

842

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

843

datetime.datetime.utcnow())

844

845

# attributes specific for this server instance

355

if "secret" in config:

356

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

357

elif "secfile" in config:

358

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

359

(config["secfile"])),

360

"rb") as secfile:

361

self.secret = secfile.read()

362

else:

363

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

364

% self.name)

365

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

366

self.created = datetime.datetime.utcnow()

367

self.enabled = True

368

self.last_approval_request = None

369

self.last_enabled = datetime.datetime.utcnow()

370

self.last_checked_ok = None

371

self.last_checker_status = 0

372

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

373

self.extended_timeout = string_to_delta(config

374

["extended_timeout"])

375

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

846

376

self.checker = None

847

377

self.checker_initiator_tag = None

848

378

self.disable_initiator_tag = None

379

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

849

380

self.checker_callback_tag = None

381

self.checker_command = config["checker"]

850

382

self.current_checker_command = None

851

self.approved = None

383

self._approved = None

384

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

385

True)

852

386

self.approvals_pending = 0

853

self.changedstate = multiprocessing_manager.Condition(

854

multiprocessing_manager.Lock())

855

self.client_structure = [attr

856

for attr in self.__dict__.iterkeys()

857

if not attr.startswith("_")]

387

self.approval_delay = string_to_delta(

388

config["approval_delay"])

389

self.approval_duration = string_to_delta(

390

config["approval_duration"])

391

self.changedstate = (multiprocessing_manager

392

.Condition(multiprocessing_manager

393

.Lock()))

394

self.client_structure = [attr for attr in self.__dict__.iterkeys() if not attr.startswith("_")]

858

395

self.client_structure.append("client_structure")

859

860

for name, t in inspect.getmembers(

861

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

396

397

398

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

399

lambda obj: isinstance(obj, property)):

862

400

if not name.startswith("_"):

863

401

self.client_structure.append(name)

864

402

865

# Send notice to process children that client state has changed

403

866

404

def send_changedstate(self):

867

with self.changedstate:

868

self.changedstate.notify_all()

405

self.changedstate.acquire()

406

self.changedstate.notify_all()

407

self.changedstate.release()

869

408

870

409

def enable(self):

871

410

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

872

411

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

873

412

# Already enabled

874

413

return

414

self.send_changedstate()

875

415

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

876

416

self.enabled = True

877

417

self.last_enabled = datetime.datetime.utcnow()

878

418

self.init_checker()

879

self.send_changedstate()

880

419

881

420

def disable(self, quiet=True):

882

421

"""Disable this client."""

883

422

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

884

423

return False

885

424

if not quiet:

425

self.send_changedstate()

426

if not quiet:

886

427

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

887

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

428

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

888

429

gobject.source_remove(self.disable_initiator_tag)

889

430

self.disable_initiator_tag = None

890

431

self.expires = None

891

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

432

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

892

433

gobject.source_remove(self.checker_initiator_tag)

893

434

self.checker_initiator_tag = None

894

435

self.stop_checker()

895

436

self.enabled = False

896

if not quiet:

897

self.send_changedstate()

898

437

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

899

438

return False

900

439

901

440

def __del__(self):

902

441

self.disable()

903

442

904

443

def init_checker(self):

905

444

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

906

445

# and every interval from then on.

907

if self.checker_initiator_tag is not None:

908

gobject.source_remove(self.checker_initiator_tag)

909

self.checker_initiator_tag = gobject.timeout_add(

910

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

911

self.start_checker)

446

self.checker_initiator_tag = (gobject.timeout_add

447

(self.interval_milliseconds(),

448

self.start_checker))

912

449

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

913

if self.disable_initiator_tag is not None:

914

gobject.source_remove(self.disable_initiator_tag)

915

self.disable_initiator_tag = gobject.timeout_add(

916

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

450

self.disable_initiator_tag = (gobject.timeout_add

451

(self.timeout_milliseconds(),

452

self.disable))

917

453

# Also start a new checker *right now*.

918

454

self.start_checker()

919

920

def checker_callback(self, source, condition, connection,

921

command):

455

456

457

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

922

458

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

923

459

self.checker_callback_tag = None

924

460

self.checker = None

925

# Read return code from connection (see call_pipe)

926

returncode = connection.recv()

927

connection.close()

928

929

if returncode >= 0:

930

self.last_checker_status = returncode

931

self.last_checker_signal = None

461

if os.WIFEXITED(condition):

462

self.last_checker_status = os.WEXITSTATUS(condition)

932

463

if self.last_checker_status == 0:

933

464

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

934

465

vars(self))

935

466

self.checked_ok()

936

467

else:

937

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

468

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

469

vars(self))

938

470

else:

939

471

self.last_checker_status = -1

940

self.last_checker_signal = -returncode

941

472

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

942

473

vars(self))

943

return False

944

945

def checked_ok(self):

946

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

947

self.last_checked_ok = datetime.datetime.utcnow()

948

self.last_checker_status = 0

949

self.last_checker_signal = None

950

self.bump_timeout()

951

952

def bump_timeout(self, timeout=None):

953

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

474

475

def checked_ok(self, timeout=None):

476

"""Bump up the timeout for this client.

477

478

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

479

alive and well.

480

"""

954

481

if timeout is None:

955

482

timeout = self.timeout

483

self.last_checked_ok = datetime.datetime.utcnow()

956

484

if self.disable_initiator_tag is not None:

957

485

gobject.source_remove(self.disable_initiator_tag)

958

self.disable_initiator_tag = None

959

486

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

960

self.disable_initiator_tag = gobject.timeout_add(

961

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

487

self.disable_initiator_tag = (gobject.timeout_add

488

(_timedelta_to_milliseconds

489

(timeout), self.disable))

962

490

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

963

491

964

492

def need_approval(self):

970

498

If a checker already exists, leave it running and do

971

499

nothing."""

972

500

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

973

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

974

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

975

# would inevitably timeout, since no checker would get a

976

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

501

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

502

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

503

# client would inevitably timeout, since no checker would get

504

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

977

505

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

978

506

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

979

507

# should be.

980

508

981

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

982

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

983

self.checker.join()

984

self.checker = None

509

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

510

try:

511

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

512

except (AttributeError, OSError) as error:

513

if (isinstance(error, OSError)

514

and error.errno != errno.ECHILD):

515

raise error

516

else:

517

if pid:

518

logger.warning("Checker was a zombie")

519

gobject.source_remove(self.checker_callback_tag)

520

self.checker_callback(pid, status,

521

self.current_checker_command)

985

522

# Start a new checker if needed

986

523

if self.checker is None:

987

# Escape attributes for the shell

988

escaped_attrs = {

989

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

990

for attr in self.runtime_expansions }

991

524

try:

992

command = self.checker_command % escaped_attrs

993

except TypeError as error:

994

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

995

self.checker_command,

996

exc_info=error)

997

return True # Try again later

525

# In case checker_command has exactly one % operator

526

command = self.checker_command % self.host

527

except TypeError:

528

# Escape attributes for the shell

529

escaped_attrs = dict(

530

(attr,

531

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

532

errors=

533

'replace')))

534

for attr in

535

self.runtime_expansions)

536

537

try:

538

command = self.checker_command % escaped_attrs

539

except TypeError as error:

540

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

541

' %s', self.checker_command, error)

542

return True # Try again later

998

543

self.current_checker_command = command

999

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

1000

self.name)

1001

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

1002

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

1003

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

1004

# always replaced by /dev/null.)

1005

# The exception is when not debugging but nevertheless

1006

# running in the foreground; use the previously

1007

# created wnull.

1008

popen_args = { "close_fds": True,

1009

"shell": True,

1010

"cwd": "/" }

1011

if (not self.server_settings["debug"]

1012

and self.server_settings["foreground"]):

1013

popen_args.update({"stdout": wnull,

1014

"stderr": wnull })

1015

pipe = multiprocessing.Pipe(duplex = False)

1016

self.checker = multiprocessing.Process(

1017

target = call_pipe,

1018

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

1019

kwargs = popen_args)

1020

self.checker.start()

1021

self.checker_callback_tag = gobject.io_add_watch(

1022

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

1023

self.checker_callback, pipe[0], command)

544

try:

545

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

546

command, self.name)

547

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

548

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

549

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

550

# always replaced by /dev/null.)

551

self.checker = subprocess.Popen(command,

552

close_fds=True,

553

shell=True, cwd="/")

554

self.checker_callback_tag = (gobject.child_watch_add

555

(self.checker.pid,

556

self.checker_callback,

557

data=command))

558

# The checker may have completed before the gobject

559

# watch was added. Check for this.

560

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

561

if pid:

562

gobject.source_remove(self.checker_callback_tag)

563

self.checker_callback(pid, status, command)

564

except OSError as error:

565

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

566

error)

1024

567

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

1025

568

return True

1026

569

1032

575

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

1033

576

return

1034

577

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

1035

self.checker.terminate()

578

try:

579

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

580

#time.sleep(0.5)

581

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

582

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

583

except OSError as error:

584

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

585

raise

1036

586

self.checker = None

1037

587

1038

1039

def dbus_service_property(dbus_interface,

1040

signature="v",

1041

access="readwrite",

1042

byte_arrays=False):

588

# Encrypts a client secret and stores it in a varible encrypted_secret

589

def encrypt_secret(self, key):

590

# Encryption-key need to be specific size, so we hash inputed key

591

hasheng = hashlib.sha256()

592

hasheng.update(key)

593

encryptionkey = hasheng.digest()

594

595

# Create validation hash so we know at decryption if it was sucessful

596

hasheng = hashlib.sha256()

597

hasheng.update(self.secret)

598

validationhash = hasheng.digest()

599

600

# Encrypt secret

601

iv = os.urandom(Crypto.Cipher.AES.block_size)

602

ciphereng = Crypto.Cipher.AES.new(encryptionkey,

603

Crypto.Cipher.AES.MODE_CFB, iv)

604

ciphertext = ciphereng.encrypt(validationhash+self.secret)

605

self.encrypted_secret = (ciphertext, iv)

606

607

# Decrypt a encrypted client secret

608

def decrypt_secret(self, key):

609

# Decryption-key need to be specific size, so we hash inputed key

610

hasheng = hashlib.sha256()

611

hasheng.update(key)

612

encryptionkey = hasheng.digest()

613

614

# Decrypt encrypted secret

615

ciphertext, iv = self.encrypted_secret

616

ciphereng = Crypto.Cipher.AES.new(encryptionkey,

617

Crypto.Cipher.AES.MODE_CFB, iv)

618

plain = ciphereng.decrypt(ciphertext)

619

620

# Validate decrypted secret to know if it was succesful

621

hasheng = hashlib.sha256()

622

validationhash = plain[:hasheng.digest_size]

623

secret = plain[hasheng.digest_size:]

624

hasheng.update(secret)

625

626

# if validation fails, we use key as new secret. Otherwhise, we use

627

# the decrypted secret

628

if hasheng.digest() == validationhash:

629

self.secret = secret

630

else:

631

self.secret = key

632

del self.encrypted_secret

633

634

635

def dbus_service_property(dbus_interface, signature="v",

636

access="readwrite", byte_arrays=False):

1043

637

"""Decorators for marking methods of a DBusObjectWithProperties to

1044

638

become properties on the D-Bus.

1045

639

1054

648

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

1055

649

if byte_arrays and signature != "ay":

1056

650

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

1057

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

1058

651

" signature %r" % signature)

1059

652

def decorator(func):

1060

653

func._dbus_is_property = True

1061

654

func._dbus_interface = dbus_interface

1066

659

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

1067

660

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1068

661

return func

1069

1070

return decorator

1071

1072

1073

def dbus_interface_annotations(dbus_interface):

1074

"""Decorator for marking functions returning interface annotations

1075

1076

Usage:

1077

1078

@dbus_interface_annotations("org.example.Interface")

1079

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

1080

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

1081

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

1082

"false"}

1083

"""

1084

1085

def decorator(func):

1086

func._dbus_is_interface = True

1087

func._dbus_interface = dbus_interface

1088

func._dbus_name = dbus_interface

1089

return func

1090

1091

return decorator

1092

1093

1094

def dbus_annotations(annotations):

1095

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

1096

Usage:

1097

1098

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

1099

"org.freedesktop.DBus.Property."

1100

"EmitsChangedSignal": "false"})

1101

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

1102

access="r")

1103

def Property_dbus_property(self):

1104

return dbus.Boolean(False)

1105

1106

See also the DBusObjectWithAnnotations class.

1107

"""

1108

1109

def decorator(func):

1110

func._dbus_annotations = annotations

1111

return func

1112

1113

662

return decorator

1114

663

1115

664

1116

665

class DBusPropertyException(dbus.exceptions.DBusException):

1117

666

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

1118

667

"""

1119

pass

668

def __unicode__(self):

669

return unicode(str(self))

1120

670

1121

671

1122

672

class DBusPropertyAccessException(DBusPropertyException):

1131

681

pass

1132

682

1133

683

1134

class DBusObjectWithAnnotations(dbus.service.Object):

1135

"""A D-Bus object with annotations.

1136

1137

Classes inheriting from this can use the dbus_annotations

1138

decorator to add annotations to methods or signals.

1139

"""

1140

1141

@staticmethod

1142

def _is_dbus_thing(thing):

1143

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

1144

1145

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

1146

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

1147

"""

1148

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

1149

False)

1150

1151

def _get_all_dbus_things(self, thing):

1152

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

1153

"""

1154

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

1155

athing.__get__(self))

1156

for cls in self.__class__.__mro__

1157

for name, athing in

1158

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

1159

1160

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1161

out_signature = "s",

1162

path_keyword = 'object_path',

1163

connection_keyword = 'connection')

1164

def Introspect(self, object_path, connection):

1165

"""Overloading of standard D-Bus method.

1166

1167

Inserts annotation tags on methods and signals.

1168

"""

1169

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

1170

connection)

1171

try:

1172

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

1173

1174

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

1175

# Add annotation tags

1176

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

1177

for tag in if_tag.getElementsByTagName(typ):

1178

annots = dict()

1179

for name, prop in (self.

1180

_get_all_dbus_things(typ)):

1181

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

1182

and prop._dbus_interface

1183

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

1184

annots.update(getattr(

1185

prop, "_dbus_annotations", {}))

1186

for name, value in annots.items():

1187

ann_tag = document.createElement(

1188

"annotation")

1189

ann_tag.setAttribute("name", name)

1190

ann_tag.setAttribute("value", value)

1191

tag.appendChild(ann_tag)

1192

# Add interface annotation tags

1193

for annotation, value in dict(

1194

itertools.chain.from_iterable(

1195

annotations().items()

1196

for name, annotations

1197

in self._get_all_dbus_things("interface")

1198

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

1199

)).items():

1200

ann_tag = document.createElement("annotation")

1201

ann_tag.setAttribute("name", annotation)

1202

ann_tag.setAttribute("value", value)

1203

if_tag.appendChild(ann_tag)

1204

# Fix argument name for the Introspect method itself

1205

if (if_tag.getAttribute("name")

1206

== dbus.INTROSPECTABLE_IFACE):

1207

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

1208

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

1209

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

1210

if (arg.getAttribute("direction")

1211

== "out"):

1212

arg.setAttribute("name",

1213

"xml_data")

1214

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

1215

document.unlink()

1216

except (AttributeError, xml.dom.DOMException,

1217

xml.parsers.expat.ExpatError) as error:

1218

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

1219

exc_info=error)

1220

return xmlstring

1221

1222

1223

class DBusObjectWithProperties(DBusObjectWithAnnotations):

684

class DBusObjectWithProperties(dbus.service.Object):

1224

685

"""A D-Bus object with properties.

1225

686

1226

687

Classes inheriting from this can use the dbus_service_property

1228

689

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

1229

690

"""

1230

691

692

@staticmethod

693

def _is_dbus_property(obj):

694

return getattr(obj, "_dbus_is_property", False)

695

696

def _get_all_dbus_properties(self):

697

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

698

"""

699

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

700

for cls in self.__class__.__mro__

701

for name, prop in

702

inspect.getmembers(cls, self._is_dbus_property))

703

1231

704

def _get_dbus_property(self, interface_name, property_name):

1232

705

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

1233

706

property with the specified name and interface.

1234

707

"""

1235

for cls in self.__class__.__mro__:

1236

for name, value in inspect.getmembers(

1237

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

708

for cls in self.__class__.__mro__:

709

for name, value in (inspect.getmembers

710

(cls, self._is_dbus_property)):

1238

711

if (value._dbus_name == property_name

1239

712

and value._dbus_interface == interface_name):

1240

713

return value.__get__(self)

1241

714

1242

715

# No such property

1243

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

1244

self.dbus_object_path, interface_name, property_name))

1245

1246

@classmethod

1247

def _get_all_interface_names(cls):

1248

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

1249

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

1250

"_dbus_interface", None)

1251

for x in (inspect.getmro(cls))

1252

for attr in dir(x))

1253

if name is not None)

1254

1255

@dbus.service.method(dbus.PROPERTIES_IFACE,

1256

in_signature="ss",

716

raise DBusPropertyNotFound(self.dbus_object_path + ":"

717

+ interface_name + "."

718

+ property_name)

719

720

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

1257

721

out_signature="v")

1258

722

def Get(self, interface_name, property_name):

1259

723

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

1277

741

# The byte_arrays option is not supported yet on

1278

742

# signatures other than "ay".

1279

743

if prop._dbus_signature != "ay":

1280

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

1281

"'ay' signature {!r}"

1282

.format(prop._dbus_signature))

1283

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

1284

for byte in value))

744

raise ValueError

745

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

746

for byte in value))

1285

747

prop(value)

1286

748

1287

@dbus.service.method(dbus.PROPERTIES_IFACE,

1288

in_signature="s",

749

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

1289

750

out_signature="a{sv}")

1290

751

def GetAll(self, interface_name):

1291

752

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

1293

754

1294

755

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

1295

756

"""

1296

properties = {}

1297

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

757

all = {}

758

for name, prop in self._get_all_dbus_properties():

1298

759

if (interface_name

1299

760

and interface_name != prop._dbus_interface):

1300

761

# Interface non-empty but did not match

1304

765

continue

1305

766

value = prop()

1306

767

if not hasattr(value, "variant_level"):

1307

properties[name] = value

768

all[name] = value

1308

769

continue

1309

properties[name] = type(value)(

1310

value, variant_level = value.variant_level + 1)

1311

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

1312

1313

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

1314

def PropertiesChanged(self, interface_name, changed_properties,

1315

invalidated_properties):

1316

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

1317

standard.

1318

"""

1319

pass

770

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

771

value.variant_level+1)

772

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

1320

773

1321

774

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1322

775

out_signature="s",

1323

776

path_keyword='object_path',

1324

777

connection_keyword='connection')

1325

778

def Introspect(self, object_path, connection):

1326

"""Overloading of standard D-Bus method.

1327

1328

Inserts property tags and interface annotation tags.

779

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

1329

780

"""

1330

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1331

object_path,

1332

connection)

781

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

782

connection)

1333

783

try:

1334

784

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

1335

1336

785

def make_tag(document, name, prop):

1337

786

e = document.createElement("property")

1338

787

e.setAttribute("name", name)

1339

788

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

1340

789

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

1341

790

return e

1342

1343

791

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

1344

# Add property tags

1345

792

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

1346

793

for name, prop

1347

in self._get_all_dbus_things("property")

794

in self._get_all_dbus_properties()

1348

795

if prop._dbus_interface

1349

796

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

1350

797

if_tag.appendChild(tag)

1351

# Add annotation tags for properties

1352

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

1353

annots = dict()

1354

for name, prop in self._get_all_dbus_things(

1355

"property"):

1356

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

1357

and prop._dbus_interface

1358

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

1359

annots.update(getattr(

1360

prop, "_dbus_annotations", {}))

1361

for name, value in annots.items():

1362

ann_tag = document.createElement(

1363

"annotation")

1364

ann_tag.setAttribute("name", name)

1365

ann_tag.setAttribute("value", value)

1366

tag.appendChild(ann_tag)

1367

798

# Add the names to the return values for the

1368

799

# "org.freedesktop.DBus.Properties" methods

1369

800

if (if_tag.getAttribute("name")

1384

815

except (AttributeError, xml.dom.DOMException,

1385

816

xml.parsers.expat.ExpatError) as error:

1386

817

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

1387

exc_info=error)

1388

return xmlstring

1389

1390

try:

1391

dbus.OBJECT_MANAGER_IFACE

1392

except AttributeError:

1393

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

1394

1395

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1396

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

1397

1398

Classes inheriting from this exposes the standard

1399

GetManagedObjects call and the InterfacesAdded and

1400

InterfacesRemoved signals on the standard

1401

"org.freedesktop.DBus.ObjectManager" interface.

1402

1403

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

1404

manually.

1405

"""

1406

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1407

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

1408

def GetManagedObjects(self):

1409

"""This function must be overridden"""

1410

raise NotImplementedError()

1411

1412

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1413

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

1414

def InterfacesAdded(self, object_path, interfaces_and_properties):

1415

pass

1416

1417

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

1418

def InterfacesRemoved(self, object_path, interfaces):

1419

pass

1420

1421

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1422

out_signature = "s",

1423

path_keyword = 'object_path',

1424

connection_keyword = 'connection')

1425

def Introspect(self, object_path, connection):

1426

"""Overloading of standard D-Bus method.

1427

1428

Override return argument name of GetManagedObjects to be

1429

"objpath_interfaces_and_properties"

1430

"""

1431

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1432

object_path,

1433

connection)

1434

try:

1435

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

1436

1437

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

1438

# Fix argument name for the GetManagedObjects method

1439

if (if_tag.getAttribute("name")

1440

== dbus.OBJECT_MANAGER_IFACE):

1441

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

1442

if (cn.getAttribute("name")

1443

== "GetManagedObjects"):

1444

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

1445

if (arg.getAttribute("direction")

1446

== "out"):

1447

arg.setAttribute(

1448

"name",

1449

"objpath_interfaces"

1450

"_and_properties")

1451

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

1452

document.unlink()

1453

except (AttributeError, xml.dom.DOMException,

1454

xml.parsers.expat.ExpatError) as error:

1455

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

1456

exc_info = error)

1457

return xmlstring

1458

1459

def datetime_to_dbus(dt, variant_level=0):

818

error)

819

return xmlstring

820

821

822

def datetime_to_dbus (dt, variant_level=0):

1460

823

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

1461

824

if dt is None:

1462

825

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

1463

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

1464

1465

1466

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1467

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

1468

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

1469

interface names according to the "alt_interface_names" mapping.

1470

Usage:

1471

1472

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

1473

"net.example.AlternateInterface"})

1474

class SampleDBusObject(dbus.service.Object):

1475

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

1476

def SampleDBusMethod():

1477

pass

1478

1479

The above "SampleDBusMethod" on "SampleDBusObject" will be

1480

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

1481

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

1482

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

1483

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

1484

1485

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

1486

(from DBusObjectWithProperties) and interfaces (from the

1487

dbus_interface_annotations decorator).

826

return dbus.String(dt.isoformat(),

827

variant_level=variant_level)

828

829

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

830

.__metaclass__):

831

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

832

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

1488

833

"""

1489

1490

def wrapper(cls):

1491

for orig_interface_name, alt_interface_name in (

1492

alt_interface_names.items()):

1493

attr = {}

1494

interface_names = set()

1495

# Go though all attributes of the class

1496

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

834

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

835

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

836

# methods, signals, or properties in them

837

for base in (b for b in bases

838

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

839

# Go though all attributes of the base class

840

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

1497

841

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

1498

842

# with the wrong interface name

1499

843

if (not hasattr(attribute, "_dbus_interface")

1500

or not attribute._dbus_interface.startswith(

1501

orig_interface_name)):

844

or not attribute._dbus_interface

845

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

1502

846

continue

1503

847

# Create an alternate D-Bus interface name based on

1504

848

# the current name

1505

alt_interface = attribute._dbus_interface.replace(

1506

orig_interface_name, alt_interface_name)

1507

interface_names.add(alt_interface)

849

alt_interface = (attribute._dbus_interface

850

.replace("se.recompile.Mandos",

851

"se.bsnet.fukt.Mandos"))

1508

852

# Is this a D-Bus signal?

1509

853

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

1510

if sys.version_info.major == 2:

1511

# Extract the original non-method undecorated

1512

# function by black magic

1513

nonmethod_func = (dict(

854

# Extract the original non-method function by

855

# black magic

856

nonmethod_func = (dict(

1514

857

zip(attribute.func_code.co_freevars,

1515

attribute.__closure__))

1516

["func"].cell_contents)

1517

else:

1518

nonmethod_func = attribute

858

attribute.__closure__))["func"]

859

.cell_contents)

1519

860

# Create a new, but exactly alike, function

1520

861

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

1521

862

# with the alternate D-Bus interface name

1522

if sys.version_info.major == 2:

1523

new_function = types.FunctionType(

1524

nonmethod_func.func_code,

1525

nonmethod_func.func_globals,

1526

nonmethod_func.func_name,

1527

nonmethod_func.func_defaults,

1528

nonmethod_func.func_closure)

1529

else:

1530

new_function = types.FunctionType(

1531

nonmethod_func.__code__,

1532

nonmethod_func.__globals__,

1533

nonmethod_func.__name__,

1534

nonmethod_func.__defaults__,

1535

nonmethod_func.__closure__)

1536

new_function = (dbus.service.signal(

1537

alt_interface,

1538

attribute._dbus_signature)(new_function))

1539

# Copy annotations, if any

1540

try:

1541

new_function._dbus_annotations = dict(

1542

attribute._dbus_annotations)

1543

except AttributeError:

1544

pass

863

new_function = (dbus.service.signal

864

(alt_interface,

865

attribute._dbus_signature)

866

(types.FunctionType(

867

nonmethod_func.func_code,

868

nonmethod_func.func_globals,

869

nonmethod_func.func_name,

870

nonmethod_func.func_defaults,

871

nonmethod_func.func_closure)))

1545

872

# Define a creator of a function to call both the

1546

# original and alternate functions, so both the

1547

# original and alternate signals gets sent when

1548

# the function is called

873

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

874

# signals gets sent when the function is called

1549

875

def fixscope(func1, func2):

1550

876

"""This function is a scope container to pass

1551

877

func1 and func2 to the "call_both" function

1552

878

outside of its arguments"""

1553

1554

@functools.wraps(func2)

1555

879

def call_both(*args, **kwargs):

1556

880

"""This function will emit two D-Bus

1557

881

signals by calling func1 and func2"""

1558

882

func1(*args, **kwargs)

1559

883

func2(*args, **kwargs)

1560

# Make wrapper function look like a D-Bus signal

1561

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

1562

if name.startswith("_dbus_"):

1563

setattr(call_both, name, attr)

1564

1565

884

return call_both

1566

885

# Create the "call_both" function and add it to

1567

886

# the class

1568

attr[attrname] = fixscope(attribute, new_function)

887

attr[attrname] = fixscope(attribute,

888

new_function)

1569

889

# Is this a D-Bus method?

1570

890

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

1571

891

# Create a new, but exactly alike, function

1572

892

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

1573

893

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

1574

894

# to the class.

1575

attr[attrname] = (

1576

dbus.service.method(

1577

alt_interface,

1578

attribute._dbus_in_signature,

1579

attribute._dbus_out_signature)

1580

(types.FunctionType(attribute.func_code,

1581

attribute.func_globals,

1582

attribute.func_name,

1583

attribute.func_defaults,

1584

attribute.func_closure)))

1585

# Copy annotations, if any

1586

try:

1587

attr[attrname]._dbus_annotations = dict(

1588

attribute._dbus_annotations)

1589

except AttributeError:

1590

pass

895

attr[attrname] = (dbus.service.method

896

(alt_interface,

897

attribute._dbus_in_signature,

898

attribute._dbus_out_signature)

899

(types.FunctionType

900

(attribute.func_code,

901

attribute.func_globals,

902

attribute.func_name,

903

attribute.func_defaults,

904

attribute.func_closure)))

1591

905

# Is this a D-Bus property?

1592

906

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

1593

907

# Create a new, but exactly alike, function

1594

908

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

1595

909

# property with the alternate D-Bus interface

1596

910

# name. Add it to the class.

1597

attr[attrname] = (dbus_service_property(

1598

alt_interface, attribute._dbus_signature,

1599

attribute._dbus_access,

1600

attribute._dbus_get_args_options

1601

["byte_arrays"])

1602

(types.FunctionType(

1603

attribute.func_code,

1604

attribute.func_globals,

1605

attribute.func_name,

1606

attribute.func_defaults,

1607

attribute.func_closure)))

1608

# Copy annotations, if any

1609

try:

1610

attr[attrname]._dbus_annotations = dict(

1611

attribute._dbus_annotations)

1612

except AttributeError:

1613

pass

1614

# Is this a D-Bus interface?

1615

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

1616

# Create a new, but exactly alike, function

1617

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

1618

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

1619

# to the class.

1620

attr[attrname] = (

1621

dbus_interface_annotations(alt_interface)

1622

(types.FunctionType(attribute.func_code,

1623

attribute.func_globals,

1624

attribute.func_name,

1625

attribute.func_defaults,

1626

attribute.func_closure)))

1627

if deprecate:

1628

# Deprecate all alternate interfaces

1629

iname="_AlternateDBusNames_interface_annotation{}"

1630

for interface_name in interface_names:

1631

1632

@dbus_interface_annotations(interface_name)

1633

def func(self):

1634

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

1635

"true" }

1636

# Find an unused name

1637

for aname in (iname.format(i)

1638

for i in itertools.count()):

1639

if aname not in attr:

1640

attr[aname] = func

1641

break

1642

if interface_names:

1643

# Replace the class with a new subclass of it with

1644

# methods, signals, etc. as created above.

1645

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

1646

(cls, ), attr)

1647

return cls

1648

1649

return wrapper

1650

1651

1652

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

1653

"se.bsnet.fukt.Mandos"})

911

attr[attrname] = (dbus_service_property

912

(alt_interface,

913

attribute._dbus_signature,

914

attribute._dbus_access,

915

attribute

916

._dbus_get_args_options

917

["byte_arrays"])

918

(types.FunctionType

919

(attribute.func_code,

920

attribute.func_globals,

921

attribute.func_name,

922

attribute.func_defaults,

923

attribute.func_closure)))

924

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

925

1654

926

class ClientDBus(Client, DBusObjectWithProperties):

1655

927

"""A Client class using D-Bus

1656

928

1660

932

"""

1661

933

1662

934

runtime_expansions = (Client.runtime_expansions

1663

+ ("dbus_object_path", ))

1664

1665

_interface = "se.recompile.Mandos.Client"

935

+ ("dbus_object_path",))

1666

936

1667

937

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

1668

938

1669

939

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

1670

940

self.bus = bus

1671

941

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

942

943

self._approvals_pending = 0

1672

944

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

1673

945

# the D-Bus

1674

client_object_name = str(self.name).translate(

946

client_object_name = unicode(self.name).translate(

1675

947

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

1676

948

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

1677

self.dbus_object_path = dbus.ObjectPath(

1678

"/clients/" + client_object_name)

949

self.dbus_object_path = (dbus.ObjectPath

950

("/clients/" + client_object_name))

1679

951

DBusObjectWithProperties.__init__(self, self.bus,

1680

952

self.dbus_object_path)

1681

1682

def notifychangeproperty(transform_func, dbus_name,

1683

type_func=lambda x: x,

1684

variant_level=1,

1685

invalidate_only=False,

1686

_interface=_interface):

953

954

def notifychangeproperty(transform_func,

955

dbus_name, type_func=lambda x: x,

956

variant_level=1):

1687

957

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

1688

958

its changes to DBus.

1689

959

1690

960

transform_fun: Function that takes a value and a variant_level

1691

961

and transforms it to a D-Bus type.

1692

962

dbus_name: D-Bus name of the variable

1694

964

to the D-Bus. Default: no transform

1695

965

variant_level: D-Bus variant level. Default: 1

1696

966

"""

1697

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

1698

967

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

1699

968

def setter(self, value):

1700

969

if hasattr(self, "dbus_object_path"):

1701

970

if (not hasattr(self, attrname) or

1702

971

type_func(getattr(self, attrname, None))

1703

972

!= type_func(value)):

1704

if invalidate_only:

1705

self.PropertiesChanged(

1706

_interface, dbus.Dictionary(),

1707

dbus.Array((dbus_name, )))

1708

else:

1709

dbus_value = transform_func(

1710

type_func(value),

1711

variant_level = variant_level)

1712

self.PropertyChanged(dbus.String(dbus_name),

1713

dbus_value)

1714

self.PropertiesChanged(

1715

_interface,

1716

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

1717

dbus_value }),

1718

dbus.Array())

973

dbus_value = transform_func(type_func(value),

974

variant_level

975

=variant_level)

976

self.PropertyChanged(dbus.String(dbus_name),

977

dbus_value)

1719

978

setattr(self, attrname, value)

1720

979

1721

980

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

1722

981

982

1723

983

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1724

984

approvals_pending = notifychangeproperty(dbus.Boolean,

1725

985

"ApprovalPending",

1727

987

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

1728

988

last_enabled = notifychangeproperty(datetime_to_dbus,

1729

989

"LastEnabled")

1730

checker = notifychangeproperty(

1731

dbus.Boolean, "CheckerRunning",

1732

type_func = lambda checker: checker is not None)

990

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

991

type_func = lambda checker:

992

checker is not None)

1733

993

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1734

994

"LastCheckedOK")

1735

last_checker_status = notifychangeproperty(dbus.Int16,

1736

"LastCheckerStatus")

1737

995

last_approval_request = notifychangeproperty(

1738

996

datetime_to_dbus, "LastApprovalRequest")

1739

997

approved_by_default = notifychangeproperty(dbus.Boolean,

1740

998

"ApprovedByDefault")

1741

approval_delay = notifychangeproperty(

1742

dbus.UInt64, "ApprovalDelay",

1743

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

999

approval_delay = notifychangeproperty(dbus.UInt16,

1000

"ApprovalDelay",

1001

type_func =

1002

_timedelta_to_milliseconds)

1744

1003

approval_duration = notifychangeproperty(

1745

dbus.UInt64, "ApprovalDuration",

1746

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

1004

dbus.UInt16, "ApprovalDuration",

1005

type_func = _timedelta_to_milliseconds)

1747

1006

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

1748

timeout = notifychangeproperty(

1749

dbus.UInt64, "Timeout",

1750

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

1007

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

1008

type_func =

1009

_timedelta_to_milliseconds)

1751

1010

extended_timeout = notifychangeproperty(

1752

dbus.UInt64, "ExtendedTimeout",

1753

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

1754

interval = notifychangeproperty(

1755

dbus.UInt64, "Interval",

1756

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

1011

dbus.UInt16, "ExtendedTimeout",

1012

type_func = _timedelta_to_milliseconds)

1013

interval = notifychangeproperty(dbus.UInt16,

1014

"Interval",

1015

type_func =

1016

_timedelta_to_milliseconds)

1757

1017

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

1758

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

1759

invalidate_only=True)

1760

1018

1761

1019

del notifychangeproperty

1762

1020

1769

1027

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

1770

1028

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

1771

1029

1772

def checker_callback(self, source, condition,

1773

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

1774

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

1775

connection, command, *args,

1776

**kwargs)

1777

exitstatus = self.last_checker_status

1778

if exitstatus >= 0:

1030

def checker_callback(self, pid, condition, command,

1031

*args, **kwargs):

1032

self.checker_callback_tag = None

1033

self.checker = None

1034

if os.WIFEXITED(condition):

1035

exitstatus = os.WEXITSTATUS(condition)

1779

1036

# Emit D-Bus signal

1780

1037

self.CheckerCompleted(dbus.Int16(exitstatus),

1781

# This is specific to GNU libC

1782

dbus.Int64(exitstatus << 8),

1038

dbus.Int64(condition),

1783

1039

dbus.String(command))

1784

1040

else:

1785

1041

# Emit D-Bus signal

1786

1042

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

1787

dbus.Int64(

1788

# This is specific to GNU libC

1789

(exitstatus << 8)

1790

| self.last_checker_signal),

1043

dbus.Int64(condition),

1791

1044

dbus.String(command))

1792

return ret

1045

1046

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

1047

*args, **kwargs)

1793

1048

1794

1049

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

1795

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

1050

old_checker = self.checker

1051

if self.checker is not None:

1052

old_checker_pid = self.checker.pid

1053

else:

1054

old_checker_pid = None

1796

1055

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

1797

1056

# Only if new checker process was started

1798

1057

if (self.checker is not None

1802

1061

return r

1803

1062

1804

1063

def _reset_approved(self):

1805

self.approved = None

1064

self._approved = None

1806

1065

return False

1807

1066

1808

1067

def approve(self, value=True):

1809

self.approved = value

1810

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

1811

* 1000), self._reset_approved)

1812

1068

self.send_changedstate()

1069

self._approved = value

1070

gobject.timeout_add(_timedelta_to_milliseconds

1071

(self.approval_duration),

1072

self._reset_approved)

1073

1813

1074

1814

1075

## D-Bus methods, signals & properties

1815

1816

## Interfaces

1076

_interface = "se.recompile.Mandos.Client"

1817

1077

1818

1078

## Signals

1819

1079

1830

1090

pass

1831

1091

1832

1092

# PropertyChanged - signal

1833

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

1834

1093

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

1835

1094

def PropertyChanged(self, property, value):

1836

1095

"D-Bus signal"

1870

1129

self.checked_ok()

1871

1130

1872

1131

# Enable - method

1873

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

1874

1132

@dbus.service.method(_interface)

1875

1133

def Enable(self):

1876

1134

"D-Bus method"

1877

1135

self.enable()

1878

1136

1879

1137

# StartChecker - method

1880

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

1881

1138

@dbus.service.method(_interface)

1882

1139

def StartChecker(self):

1883

1140

"D-Bus method"

1884

1141

self.start_checker()

1885

1142

1886

1143

# Disable - method

1887

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

1888

1144

@dbus.service.method(_interface)

1889

1145

def Disable(self):

1890

1146

"D-Bus method"

1891

1147

self.disable()

1892

1148

1893

1149

# StopChecker - method

1894

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

1895

1150

@dbus.service.method(_interface)

1896

1151

def StopChecker(self):

1897

1152

self.stop_checker()

1904

1159

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

1905

1160

1906

1161

# ApprovedByDefault - property

1907

@dbus_service_property(_interface,

1908

signature="b",

1162

@dbus_service_property(_interface, signature="b",

1909

1163

access="readwrite")

1910

1164

def ApprovedByDefault_dbus_property(self, value=None):

1911

1165

if value is None: # get

1913

1167

self.approved_by_default = bool(value)

1914

1168

1915

1169

# ApprovalDelay - property

1916

@dbus_service_property(_interface,

1917

signature="t",

1170

@dbus_service_property(_interface, signature="t",

1918

1171

access="readwrite")

1919

1172

def ApprovalDelay_dbus_property(self, value=None):

1920

1173

if value is None: # get

1921

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

1922

* 1000)

1174

return dbus.UInt64(self.approval_delay_milliseconds())

1923

1175

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

1924

1176

1925

1177

# ApprovalDuration - property

1926

@dbus_service_property(_interface,

1927

signature="t",

1178

@dbus_service_property(_interface, signature="t",

1928

1179

access="readwrite")

1929

1180

def ApprovalDuration_dbus_property(self, value=None):

1930

1181

if value is None: # get

1931

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

1932

* 1000)

1182

return dbus.UInt64(_timedelta_to_milliseconds(

1183

self.approval_duration))

1933

1184

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

1934

1185

1935

1186

# Name - property

1936

@dbus_annotations(

1937

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

1938

1187

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

1939

1188

def Name_dbus_property(self):

1940

1189

return dbus.String(self.name)

1941

1190

1942

1191

# Fingerprint - property

1943

@dbus_annotations(

1944

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

1945

1192

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

1946

1193

def Fingerprint_dbus_property(self):

1947

1194

return dbus.String(self.fingerprint)

1948

1195

1949

1196

# Host - property

1950

@dbus_service_property(_interface,

1951

signature="s",

1197

@dbus_service_property(_interface, signature="s",

1952

1198

access="readwrite")

1953

1199

def Host_dbus_property(self, value=None):

1954

1200

if value is None: # get

1955

1201

return dbus.String(self.host)

1956

self.host = str(value)

1202

self.host = value

1957

1203

1958

1204

# Created - property

1959

@dbus_annotations(

1960

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

1961

1205

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

1962

1206

def Created_dbus_property(self):

1963

return datetime_to_dbus(self.created)

1207

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

1964

1208

1965

1209

# LastEnabled - property

1966

1210

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

1968

1212

return datetime_to_dbus(self.last_enabled)

1969

1213

1970

1214

# Enabled - property

1971

@dbus_service_property(_interface,

1972

signature="b",

1215

@dbus_service_property(_interface, signature="b",

1973

1216

access="readwrite")

1974

1217

def Enabled_dbus_property(self, value=None):

1975

1218

if value is None: # get

1980

1223

self.disable()

1981

1224

1982

1225

# LastCheckedOK - property

1983

@dbus_service_property(_interface,

1984

signature="s",

1226

@dbus_service_property(_interface, signature="s",

1985

1227

access="readwrite")

1986

1228

def LastCheckedOK_dbus_property(self, value=None):

1987

1229

if value is not None:

1989

1231

return

1990

1232

return datetime_to_dbus(self.last_checked_ok)

1991

1233

1992

# LastCheckerStatus - property

1993

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

1994

def LastCheckerStatus_dbus_property(self):

1995

return dbus.Int16(self.last_checker_status)

1996

1997

1234

# Expires - property

1998

1235

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

1999

1236

def Expires_dbus_property(self):

2005

1242

return datetime_to_dbus(self.last_approval_request)

2006

1243

2007

1244

# Timeout - property

2008

@dbus_service_property(_interface,

2009

signature="t",

1245

@dbus_service_property(_interface, signature="t",

2010

1246

access="readwrite")

2011

1247

def Timeout_dbus_property(self, value=None):

2012

1248

if value is None: # get

2013

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

2014

old_timeout = self.timeout

1249

return dbus.UInt64(self.timeout_milliseconds())

2015

1250

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

2016

# Reschedule disabling

2017

if self.enabled:

2018

now = datetime.datetime.utcnow()

2019

self.expires += self.timeout - old_timeout

2020

if self.expires <= now:

2021

# The timeout has passed

2022

self.disable()

2023

else:

2024

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

2025

is None):

2026

return

2027

gobject.source_remove(self.disable_initiator_tag)

2028

self.disable_initiator_tag = gobject.timeout_add(

2029

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

2030

self.disable)

1251

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

1252

return

1253

# Reschedule timeout

1254

gobject.source_remove(self.disable_initiator_tag)

1255

self.disable_initiator_tag = None

1256

self.expires = None

1257

time_to_die = _timedelta_to_milliseconds((self

1258

.last_checked_ok

1259

+ self.timeout)

1260

- datetime.datetime

1261

.utcnow())

1262

if time_to_die <= 0:

1263

# The timeout has passed

1264

self.disable()

1265

else:

1266

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

1267

+ datetime.timedelta(milliseconds =

1268

time_to_die))

1269

self.disable_initiator_tag = (gobject.timeout_add

1270

(time_to_die, self.disable))

2031

1271

2032

1272

# ExtendedTimeout - property

2033

@dbus_service_property(_interface,

2034

signature="t",

1273

@dbus_service_property(_interface, signature="t",

2035

1274

access="readwrite")

2036

1275

def ExtendedTimeout_dbus_property(self, value=None):

2037

1276

if value is None: # get

2038

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

2039

* 1000)

1277

return dbus.UInt64(self.extended_timeout_milliseconds())

2040

1278

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

2041

1279

2042

1280

# Interval - property

2043

@dbus_service_property(_interface,

2044

signature="t",

1281

@dbus_service_property(_interface, signature="t",

2045

1282

access="readwrite")

2046

1283

def Interval_dbus_property(self, value=None):

2047

1284

if value is None: # get

2048

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

1285

return dbus.UInt64(self.interval_milliseconds())

2049

1286

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

2050

1287

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

2051

1288

return

2052

if self.enabled:

2053

# Reschedule checker run

2054

gobject.source_remove(self.checker_initiator_tag)

2055

self.checker_initiator_tag = gobject.timeout_add(

2056

value, self.start_checker)

2057

self.start_checker() # Start one now, too

1289

# Reschedule checker run

1290

gobject.source_remove(self.checker_initiator_tag)

1291

self.checker_initiator_tag = (gobject.timeout_add

1292

(value, self.start_checker))

1293

self.start_checker() # Start one now, too

2058

1294

2059

1295

# Checker - property

2060

@dbus_service_property(_interface,

2061

signature="s",

1296

@dbus_service_property(_interface, signature="s",

2062

1297

access="readwrite")

2063

1298

def Checker_dbus_property(self, value=None):

2064

1299

if value is None: # get

2065

1300

return dbus.String(self.checker_command)

2066

self.checker_command = str(value)

1301

self.checker_command = value

2067

1302

2068

1303

# CheckerRunning - property

2069

@dbus_service_property(_interface,

2070

signature="b",

1304

@dbus_service_property(_interface, signature="b",

2071

1305

access="readwrite")

2072

1306

def CheckerRunning_dbus_property(self, value=None):

2073

1307

if value is None: # get

2078

1312

self.stop_checker()

2079

1313

2080

1314

# ObjectPath - property

2081

@dbus_annotations(

2082

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

2083

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

2084

1315

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

2085

1316

def ObjectPath_dbus_property(self):

2086

1317

return self.dbus_object_path # is already a dbus.ObjectPath

2087

1318

2088

1319

# Secret = property

2089

@dbus_annotations(

2090

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

2091

"invalidates"})

2092

@dbus_service_property(_interface,

2093

signature="ay",

2094

access="write",

2095

byte_arrays=True)

1320

@dbus_service_property(_interface, signature="ay",

1321

access="write", byte_arrays=True)

2096

1322

def Secret_dbus_property(self, value):

2097

self.secret = bytes(value)

1323

self.secret = str(value)

2098

1324

2099

1325

del _interface

2100

1326

2104

1330

self._pipe = child_pipe

2105

1331

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

2106

1332

if not self._pipe.recv():

2107

raise KeyError(fpr)

1333

raise KeyError()

2108

1334

2109

1335

def __getattribute__(self, name):

2110

if name == '_pipe':

1336

if(name == '_pipe'):

2111

1337

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

2112

1338

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

2113

1339

data = self._pipe.recv()

2114

1340

if data[0] == 'data':

2115

1341

return data[1]

2116

1342

if data[0] == 'function':

2117

2118

1343

def func(*args, **kwargs):

2119

1344

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

2120

1345

return self._pipe.recv()[1]

2121

2122

1346

return func

2123

1347

2124

1348

def __setattr__(self, name, value):

2125

if name == '_pipe':

1349

if(name == '_pipe'):

2126

1350

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

2127

1351

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

2128

1352

1353

class ClientDBusTransitional(ClientDBus):

1354

__metaclass__ = AlternateDBusNamesMetaclass

2129

1355

2130

1356

class ClientHandler(socketserver.BaseRequestHandler, object):

2131

1357

"""A class to handle client connections.

2136

1362

def handle(self):

2137

1363

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

2138

1364

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

2139

str(self.client_address))

1365

unicode(self.client_address))

2140

1366

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

2141

1367

self.server.child_pipe.fileno())

2142

1368

2143

session = gnutls.ClientSession(self.request)

1369

session = (gnutls.connection

1370

.ClientSession(self.request,

1371

gnutls.connection

1372

.X509Credentials()))

1373

1374

# Note: gnutls.connection.X509Credentials is really a

1375

# generic GnuTLS certificate credentials object so long as

1376

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

1377

# here despite using OpenPGP certificates.

2144

1378

2145

1379

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

2146

1380

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

2150

1384

priority = self.server.gnutls_priority

2151

1385

if priority is None:

2152

1386

priority = "NORMAL"

2153

gnutls.priority_set_direct(session._c_object, priority,

2154

None)

1387

(gnutls.library.functions

1388

.gnutls_priority_set_direct(session._c_object,

1389

priority, None))

2155

1390

2156

1391

# Start communication using the Mandos protocol

2157

1392

# Get protocol number

2159

1394

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

2160

1395

try:

2161

1396

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

2162

raise RuntimeError(line)

1397

raise RuntimeError

2163

1398

except (ValueError, IndexError, RuntimeError) as error:

2164

1399

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

2165

1400

return

2167

1402

# Start GnuTLS connection

2168

1403

try:

2169

1404

session.handshake()

2170

except gnutls.Error as error:

1405

except gnutls.errors.GNUTLSError as error:

2171

1406

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

2172

1407

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

2173

1408

# established. Just abandon the request.

2177

1412

approval_required = False

2178

1413

try:

2179

1414

try:

2180

fpr = self.fingerprint(

2181

self.peer_certificate(session))

2182

except (TypeError, gnutls.Error) as error:

1415

fpr = self.fingerprint(self.peer_certificate

1416

(session))

1417

except (TypeError,

1418

gnutls.errors.GNUTLSError) as error:

2183

1419

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

2184

1420

return

2185

1421

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

2198

1434

while True:

2199

1435

if not client.enabled:

2200

1436

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

2201

client.name)

1437

client.name)

2202

1438

if self.server.use_dbus:

2203

1439

# Emit D-Bus signal

2204

1440

client.Rejected("Disabled")

2205

1441

return

2206

1442

2207

if client.approved or not client.approval_delay:

1443

if client._approved or not client.approval_delay:

2208

1444

#We are approved or approval is disabled

2209

1445

break

2210

elif client.approved is None:

1446

elif client._approved is None:

2211

1447

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

2212

1448

client.name)

2213

1449

if self.server.use_dbus:

2214

1450

# Emit D-Bus signal

2215

1451

client.NeedApproval(

2216

client.approval_delay.total_seconds()

2217

* 1000, client.approved_by_default)

1452

client.approval_delay_milliseconds(),

1453

client.approved_by_default)

2218

1454

else:

2219

1455

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

2220

1456

client.name)

2226

1462

#wait until timeout or approved

2227

1463

time = datetime.datetime.now()

2228

1464

client.changedstate.acquire()

2229

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

1465

(client.changedstate.wait

1466

(float(client._timedelta_to_milliseconds(delay)

1467

/ 1000)))

2230

1468

client.changedstate.release()

2231

1469

time2 = datetime.datetime.now()

2232

1470

if (time2 - time) >= delay:

2243

1481

else:

2244

1482

delay -= time2 - time

2245

1483

2246

try:

2247

session.send(client.secret)

2248

except gnutls.Error as error:

2249

logger.warning("gnutls send failed",

2250

exc_info = error)

2251

return

1484

sent_size = 0

1485

while sent_size < len(client.secret):

1486

try:

1487

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

1488

except gnutls.errors.GNUTLSError as error:

1489

logger.warning("gnutls send failed")

1490

return

1491

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

1492

sent, len(client.secret)

1493

- (sent_size + sent))

1494

sent_size += sent

2252

1495

2253

1496

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

2254

1497

# bump the timeout using extended_timeout

2255

client.bump_timeout(client.extended_timeout)

1498

client.checked_ok(client.extended_timeout)

2256

1499

if self.server.use_dbus:

2257

1500

# Emit D-Bus signal

2258

1501

client.GotSecret()

2262

1505

client.approvals_pending -= 1

2263

1506

try:

2264

1507

session.bye()

2265

except gnutls.Error as error:

2266

logger.warning("GnuTLS bye failed",

2267

exc_info=error)

1508

except gnutls.errors.GNUTLSError as error:

1509

logger.warning("GnuTLS bye failed")

2268

1510

2269

1511

@staticmethod

2270

1512

def peer_certificate(session):

2271

1513

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

2272

1514

# If not an OpenPGP certificate...

2273

if (gnutls.certificate_type_get(session._c_object)

2274

!= gnutls.CRT_OPENPGP):

2275

# ...return invalid data

2276

return b""

1515

if (gnutls.library.functions

1516

.gnutls_certificate_type_get(session._c_object)

1517

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1518

# ...do the normal thing

1519

return session.peer_certificate

2277

1520

list_size = ctypes.c_uint(1)

2278

cert_list = (gnutls.certificate_get_peers

1521

cert_list = (gnutls.library.functions

1522

.gnutls_certificate_get_peers

2279

1523

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

2280

1524

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

2281

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

1525

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

1526

" certificate")

2282

1527

if list_size.value == 0:

2283

1528

return None

2284

1529

cert = cert_list[0]

2288

1533

def fingerprint(openpgp):

2289

1534

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2290

1535

# New GnuTLS "datum" with the OpenPGP public key

2291

datum = gnutls.datum_t(

2292

ctypes.cast(ctypes.c_char_p(openpgp),

2293

ctypes.POINTER(ctypes.c_ubyte)),

2294

ctypes.c_uint(len(openpgp)))

1536

datum = (gnutls.library.types

1537

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

1538

ctypes.POINTER

1539

(ctypes.c_ubyte)),

1540

ctypes.c_uint(len(openpgp))))

2295

1541

# New empty GnuTLS certificate

2296

crt = gnutls.openpgp_crt_t()

2297

gnutls.openpgp_crt_init(ctypes.byref(crt))

1542

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1543

(gnutls.library.functions

1544

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2298

1545

# Import the OpenPGP public key into the certificate

2299

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

2300

gnutls.OPENPGP_FMT_RAW)

1546

(gnutls.library.functions

1547

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

1548

gnutls.library.constants

1549

.GNUTLS_OPENPGP_FMT_RAW))

2301

1550

# Verify the self signature in the key

2302

1551

crtverify = ctypes.c_uint()

2303

gnutls.openpgp_crt_verify_self(crt, 0,

2304

ctypes.byref(crtverify))

1552

(gnutls.library.functions

1553

.gnutls_openpgp_crt_verify_self(crt, 0,

1554

ctypes.byref(crtverify)))

2305

1555

if crtverify.value != 0:

2306

gnutls.openpgp_crt_deinit(crt)

2307

raise gnutls.CertificateSecurityError("Verify failed")

1556

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1557

raise (gnutls.errors.CertificateSecurityError

1558

("Verify failed"))

2308

1559

# New buffer for the fingerprint

2309

1560

buf = ctypes.create_string_buffer(20)

2310

1561

buf_len = ctypes.c_size_t()

2311

1562

# Get the fingerprint from the certificate into the buffer

2312

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

2313

ctypes.byref(buf_len))

1563

(gnutls.library.functions

1564

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

1565

ctypes.byref(buf_len)))

2314

1566

# Deinit the certificate

2315

gnutls.openpgp_crt_deinit(crt)

1567

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2316

1568

# Convert the buffer to a Python bytestring

2317

1569

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

2318

1570

# Convert the bytestring to hexadecimal notation

2319

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

1571

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

2320

1572

return hex_fpr

2321

1573

2322

1574

2323

1575

class MultiprocessingMixIn(object):

2324

1576

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

2325

2326

1577

def sub_process_main(self, request, address):

2327

1578

try:

2328

1579

self.finish_request(request, address)

2329

except Exception:

1580

except:

2330

1581

self.handle_error(request, address)

2331

1582

self.close_request(request)

2332

1583

2333

1584

def process_request(self, request, address):

2334

1585

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

2335

1586

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

2336

args = (request, address))

1587

args = (request,

1588

address))

2337

1589

proc.start()

2338

1590

return proc

2339

1591

2340

1592

2341

1593

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2342

1594

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

2343

2344

1595

def process_request(self, request, client_address):

2345

1596

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

2346

1597

2355

1606

2356

1607

def add_pipe(self, parent_pipe, proc):

2357

1608

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

2358

raise NotImplementedError()

1609

raise NotImplementedError

2359

1610

2360

1611

2361

1612

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2367

1618

interface: None or a network interface name (string)

2368

1619

use_ipv6: Boolean; to use IPv6 or not

2369

1620

"""

2370

2371

1621

def __init__(self, server_address, RequestHandlerClass,

2372

interface=None,

2373

use_ipv6=True,

2374

socketfd=None):

2375

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

2376

creating a new one with socket.socket().

2377

"""

1622

interface=None, use_ipv6=True):

2378

1623

self.interface = interface

2379

1624

if use_ipv6:

2380

1625

self.address_family = socket.AF_INET6

2381

if socketfd is not None:

2382

# Save the file descriptor

2383

self.socketfd = socketfd

2384

# Save the original socket.socket() function

2385

self.socket_socket = socket.socket

2386

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

2387

#

2388

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

2389

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

2390

# patching socket.socket.)

2391

#

2392

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

2393

@functools.wraps(socket.socket)

2394

def socket_wrapper(*args, **kwargs):

2395

# Restore original function so subsequent calls are

2396

# not affected.

2397

socket.socket = self.socket_socket

2398

del self.socket_socket

2399

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

2400

# saved file descriptor.

2401

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

2402

# Replace socket.socket() function with wrapper

2403

socket.socket = socket_wrapper

2404

# The socketserver.TCPServer.__init__ will call

2405

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

2406

# socket_wrapper(), if socketfd was set.

2407

1626

socketserver.TCPServer.__init__(self, server_address,

2408

1627

RequestHandlerClass)

2409

2410

1628

def server_bind(self):

2411

1629

"""This overrides the normal server_bind() function

2412

1630

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

2418

1636

self.interface)

2419

1637

else:

2420

1638

try:

2421

self.socket.setsockopt(

2422

socket.SOL_SOCKET, SO_BINDTODEVICE,

2423

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

1639

self.socket.setsockopt(socket.SOL_SOCKET,

1640

SO_BINDTODEVICE,

1641

str(self.interface

1642

+ '\0'))

2424

1643

except socket.error as error:

2425

if error.errno == errno.EPERM:

2426

logger.error("No permission to bind to"

2427

" interface %s", self.interface)

2428

elif error.errno == errno.ENOPROTOOPT:

1644

if error[0] == errno.EPERM:

1645

logger.error("No permission to"

1646

" bind to interface %s",

1647

self.interface)

1648

elif error[0] == errno.ENOPROTOOPT:

2429

1649

logger.error("SO_BINDTODEVICE not available;"

2430

1650

" cannot bind to interface %s",

2431

1651

self.interface)

2432

elif error.errno == errno.ENODEV:

2433

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

2434

" cannot bind", self.interface)

2435

1652

else:

2436

1653

raise

2437

1654

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

2440

1657

if self.address_family == socket.AF_INET6:

2441

1658

any_address = "::" # in6addr_any

2442

1659

else:

2443

any_address = "0.0.0.0" # INADDR_ANY

1660

any_address = socket.INADDR_ANY

2444

1661

self.server_address = (any_address,

2445

1662

self.server_address[1])

2446

1663

elif not self.server_address[1]:

2447

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

1664

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

1665

0)

2448

1666

# if self.interface:

2449

1667

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

2450

1668

# 0, # port

2464

1682

2465

1683

Assumes a gobject.MainLoop event loop.

2466

1684

"""

2467

2468

1685

def __init__(self, server_address, RequestHandlerClass,

2469

interface=None,

2470

use_ipv6=True,

2471

clients=None,

2472

gnutls_priority=None,

2473

use_dbus=True,

2474

socketfd=None):

1686

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

1687

gnutls_priority=None, use_dbus=True):

2475

1688

self.enabled = False

2476

1689

self.clients = clients

2477

1690

if self.clients is None:

2481

1694

IPv6_TCPServer.__init__(self, server_address,

2482

1695

RequestHandlerClass,

2483

1696

interface = interface,

2484

use_ipv6 = use_ipv6,

2485

socketfd = socketfd)

2486

1697

use_ipv6 = use_ipv6)

2487

1698

def server_activate(self):

2488

1699

if self.enabled:

2489

1700

return socketserver.TCPServer.server_activate(self)

2493

1704

2494

1705

def add_pipe(self, parent_pipe, proc):

2495

1706

# Call "handle_ipc" for both data and EOF events

2496

gobject.io_add_watch(

2497

parent_pipe.fileno(),

2498

gobject.IO_IN | gobject.IO_HUP,

2499

functools.partial(self.handle_ipc,

2500

parent_pipe = parent_pipe,

2501

proc = proc))

1707

gobject.io_add_watch(parent_pipe.fileno(),

1708

gobject.IO_IN | gobject.IO_HUP,

1709

functools.partial(self.handle_ipc,

1710

parent_pipe =

1711

parent_pipe,

1712

proc = proc))

2502

1713

2503

def handle_ipc(self, source, condition,

2504

parent_pipe=None,

2505

proc = None,

2506

client_object=None):

1714

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

1715

proc = None, client_object=None):

1716

condition_names = {

1717

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

1718

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

1719

# blocking).

1720

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

1721

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

1722

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

1723

# broken, usually for pipes and

1724

# sockets).

1725

}

1726

conditions_string = ' | '.join(name

1727

for cond, name in

1728

condition_names.iteritems()

1729

if cond & condition)

2507

1730

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

2508

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

1731

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

2509

1732

# Wait for other process to exit

2510

1733

proc.join()

2511

1734

return False

2532

1755

parent_pipe.send(False)

2533

1756

return False

2534

1757

2535

gobject.io_add_watch(

2536

parent_pipe.fileno(),

2537

gobject.IO_IN | gobject.IO_HUP,

2538

functools.partial(self.handle_ipc,

2539

parent_pipe = parent_pipe,

2540

proc = proc,

2541

client_object = client))

1758

gobject.io_add_watch(parent_pipe.fileno(),

1759

gobject.IO_IN | gobject.IO_HUP,

1760

functools.partial(self.handle_ipc,

1761

parent_pipe =

1762

parent_pipe,

1763

proc = proc,

1764

client_object =

1765

client))

2542

1766

parent_pipe.send(True)

2543

1767

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

2544

1768

# same fileno

2550

1774

2551

1775

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

2552

1776

funcname)(*args,

2553

**kwargs)))

1777

**kwargs)))

2554

1778

2555

1779

if command == 'getattr':

2556

1780

attrname = request[1]

2557

if isinstance(client_object.__getattribute__(attrname),

2558

collections.Callable):

2559

parent_pipe.send(('function', ))

1781

if callable(client_object.__getattribute__(attrname)):

1782

parent_pipe.send(('function',))

2560

1783

else:

2561

parent_pipe.send((

2562

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

1784

parent_pipe.send(('data', client_object

1785

.__getattribute__(attrname)))

2563

1786

2564

1787

if command == 'setattr':

2565

1788

attrname = request[1]

2569

1792

return True

2570

1793

2571

1794

2572

def rfc3339_duration_to_delta(duration):

2573

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

2574

2575

>>> rfc3339_duration_to_delta("P7D")

2576

datetime.timedelta(7)

2577

>>> rfc3339_duration_to_delta("PT60S")

2578

datetime.timedelta(0, 60)

2579

>>> rfc3339_duration_to_delta("PT60M")

2580

datetime.timedelta(0, 3600)

2581

>>> rfc3339_duration_to_delta("PT24H")

2582

datetime.timedelta(1)

2583

>>> rfc3339_duration_to_delta("P1W")

2584

datetime.timedelta(7)

2585

>>> rfc3339_duration_to_delta("PT5M30S")

2586

datetime.timedelta(0, 330)

2587

>>> rfc3339_duration_to_delta("P1DT3M20S")

2588

datetime.timedelta(1, 200)

2589

"""

2590

2591

# Parsing an RFC 3339 duration with regular expressions is not

2592

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

2593

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

2594

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

2595

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

2596

# avoid excessive use of external libraries.

2597

2598

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

2599

Token = collections.namedtuple("Token", (

2600

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

2601

# a "group" containing digits

2602

"value", # datetime.timedelta or None

2603

"followers")) # Tokens valid after this token

2604

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

2605

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

2606

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

2607

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

2608

datetime.timedelta(seconds=1),

2609

frozenset((token_end, )))

2610

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

2611

datetime.timedelta(minutes=1),

2612

frozenset((token_second, token_end)))

2613

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

2614

datetime.timedelta(hours=1),

2615

frozenset((token_minute, token_end)))

2616

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

2617

None,

2618

frozenset((token_hour, token_minute,

2619

token_second)))

2620

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

2621

datetime.timedelta(days=1),

2622

frozenset((token_time, token_end)))

2623

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

2624

datetime.timedelta(weeks=4),

2625

frozenset((token_day, token_end)))

2626

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

2627

datetime.timedelta(weeks=52),

2628

frozenset((token_month, token_end)))

2629

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

2630

datetime.timedelta(weeks=1),

2631

frozenset((token_end, )))

2632

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

2633

frozenset((token_year, token_month,

2634

token_day, token_time,

2635

token_week)))

2636

# Define starting values

2637

value = datetime.timedelta() # Value so far

2638

found_token = None

2639

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

2640

s = duration # String left to parse

2641

# Loop until end token is found

2642

while found_token is not token_end:

2643

# Search for any currently valid tokens

2644

for token in followers:

2645

match = token.regexp.match(s)

2646

if match is not None:

2647

# Token found

2648

if token.value is not None:

2649

# Value found, parse digits

2650

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

2651

# Add to value so far

2652

value += factor * token.value

2653

# Strip token from string

2654

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

2655

# Go to found token

2656

found_token = token

2657

# Set valid next tokens

2658

followers = found_token.followers

2659

break

2660

else:

2661

# No currently valid tokens were found

2662

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

2663

.format(duration))

2664

# End token found

2665

return value

2666

2667

2668

1795

def string_to_delta(interval):

2669

1796

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

2670

1797

2681

1808

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

2682

1809

datetime.timedelta(0, 330)

2683

1810

"""

2684

2685

try:

2686

return rfc3339_duration_to_delta(interval)

2687

except ValueError:

2688

pass

2689

2690

1811

timevalue = datetime.timedelta(0)

2691

1812

for s in interval.split():

2692

1813

try:

2693

suffix = s[-1]

1814

suffix = unicode(s[-1])

2694

1815

value = int(s[:-1])

2695

1816

if suffix == "d":

2696

1817

delta = datetime.timedelta(value)

2703

1824

elif suffix == "w":

2704

1825

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

2705

1826

else:

2706

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

2707

except IndexError as e:

1827

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

1828

except (ValueError, IndexError) as e:

2708

1829

raise ValueError(*(e.args))

2709

1830

timevalue += delta

2710

1831

return timevalue

2711

1832

2712

1833

1834

def if_nametoindex(interface):

1835

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

1836

1837

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

1838

global if_nametoindex

1839

try:

1840

if_nametoindex = (ctypes.cdll.LoadLibrary

1841

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

1842

.if_nametoindex)

1843

except (OSError, AttributeError):

1844

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

1845

def if_nametoindex(interface):

1846

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

1847

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

1848

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

1849

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1850

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

1851

interface))

1852

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

1853

ifreq[16:20])[0]

1854

return interface_index

1855

return if_nametoindex(interface)

1856

1857

2713

1858

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

2714

1859

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

2715

1860

2723

1868

sys.exit()

2724

1869

if not noclose:

2725

1870

# Close all standard open file descriptors

2726

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

1871

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

2727

1872

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

2728

1873

raise OSError(errno.ENODEV,

2729

"{} not a character device"

2730

.format(os.devnull))

1874

"%s not a character device"

1875

% os.path.devnull)

2731

1876

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

2732

1877

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

2733

1878

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

2742

1887

2743

1888

parser = argparse.ArgumentParser()

2744

1889

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

2745

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

1890

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

2746

1891

help="show version number and exit")

2747

1892

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

2748

1893

help="Bind to interface IF")

2754

1899

help="Run self-test")

2755

1900

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

2756

1901

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

2757

" to terminal", default=None)

1902

" to terminal")

2758

1903

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

2759

1904

help="Debug level for stdout output")

2760

1905

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

2767

1912

" files")

2768

1913

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

2769

1914

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

2770

" system bus interface", default=None)

1915

" system bus interface")

2771

1916

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

2772

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

2773

default=None)

1917

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

2774

1918

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

2775

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

2776

" state", default=None)

2777

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

2778

help="Specify a file descriptor to a network"

2779

" socket to use instead of creating one")

2780

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

2781

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

2782

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

2783

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

2784

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

2785

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

2786

default=None)

2787

1919

dest="restore", help="Do not restore old state",

1920

default=True)

1921

2788

1922

options = parser.parse_args()

2789

1923

2790

1924

if options.check:

2791

1925

import doctest

2792

fail_count, test_count = doctest.testmod()

2793

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

1926

doctest.testmod()

1927

sys.exit()

2794

1928

2795

1929

# Default values for config file for server-global settings

2796

1930

server_defaults = { "interface": "",

2798

1932

"port": "",

2799

1933

"debug": "False",

2800

1934

"priority":

2801

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

2802

":+SIGN-DSA-SHA256",

1935

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

2803

1936

"servicename": "Mandos",

2804

1937

"use_dbus": "True",

2805

1938

"use_ipv6": "True",

2806

1939

"debuglevel": "",

2807

"restore": "True",

2808

"socket": "",

2809

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

2810

"foreground": "False",

2811

"zeroconf": "True",

2812

}

1940

}

2813

1941

2814

1942

# Parse config file for server-global settings

2815

1943

server_config = configparser.SafeConfigParser(server_defaults)

2816

1944

del server_defaults

2817

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

1945

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

1946

"mandos.conf"))

2818

1947

# Convert the SafeConfigParser object to a dict

2819

1948

server_settings = server_config.defaults()

2820

1949

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

2821

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

1950

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

2822

1951

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

2823

1952

option)

2824

1953

if server_settings["port"]:

2825

1954

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

2826

1955

"port")

2827

if server_settings["socket"]:

2828

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

2829

"socket")

2830

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

2831

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

2832

# happen with a supplied network socket.

2833

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

2834

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

2835

["socket"])

2836

1956

del server_config

2837

1957

2838

1958

# Override the settings from the config file with command line

2839

1959

# options, if set.

2840

1960

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

2841

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

2842

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

2843

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

1961

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

1962

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

2844

1963

value = getattr(options, option)

2845

1964

if value is not None:

2846

1965

server_settings[option] = value

2847

1966

del options

2848

1967

# Force all strings to be unicode

2849

1968

for option in server_settings.keys():

2850

if isinstance(server_settings[option], bytes):

2851

server_settings[option] = (server_settings[option]

2852

.decode("utf-8"))

2853

# Force all boolean options to be boolean

2854

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

2855

"foreground", "zeroconf"):

2856

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

2857

# Debug implies foreground

2858

if server_settings["debug"]:

2859

server_settings["foreground"] = True

1969

if type(server_settings[option]) is str:

1970

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

2860

1971

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

2861

1972

2862

1973

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

2863

1974

2864

if (not server_settings["zeroconf"]

2865

and not (server_settings["port"]

2866

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

2867

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

2868

2869

1975

# For convenience

2870

1976

debug = server_settings["debug"]

2871

1977

debuglevel = server_settings["debuglevel"]

2872

1978

use_dbus = server_settings["use_dbus"]

2873

1979

use_ipv6 = server_settings["use_ipv6"]

2874

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

2875

stored_state_file)

2876

foreground = server_settings["foreground"]

2877

zeroconf = server_settings["zeroconf"]

2878

2879

if debug:

2880

initlogger(debug, logging.DEBUG)

2881

else:

2882

if not debuglevel:

2883

initlogger(debug)

2884

else:

2885

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

2886

initlogger(debug, level)

2887

1980

2888

1981

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

2889

syslogger.setFormatter(

2890

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

2891

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

2892

server_settings["servicename"])))

1982

syslogger.setFormatter(logging.Formatter

1983

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

1984

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

1985

% server_settings["servicename"]))

2893

1986

2894

1987

# Parse config file with clients

2895

client_config = configparser.SafeConfigParser(Client

2896

.client_defaults)

1988

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

1989

"extended_timeout": "15m",

1990

"interval": "2m",

1991

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

1992

"host": "",

1993

"approval_delay": "0s",

1994

"approval_duration": "1s",

1995

}

1996

client_config = configparser.SafeConfigParser(client_defaults)

2897

1997

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

2898

1998

"clients.conf"))

2899

1999

2900

2000

global mandos_dbus_service

2901

2001

mandos_dbus_service = None

2902

2002

2903

socketfd = None

2904

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

2905

socketfd = server_settings["socket"]

2906

tcp_server = MandosServer(

2907

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

2908

ClientHandler,

2909

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

2910

use_ipv6=use_ipv6,

2911

gnutls_priority=server_settings["priority"],

2912

use_dbus=use_dbus,

2913

socketfd=socketfd)

2914

if not foreground:

2915

pidfilename = "/run/mandos.pid"

2916

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

2917

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

2918

pidfile = None

2003

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

2004

server_settings["port"]),

2005

ClientHandler,

2006

interface=(server_settings["interface"]

2007

or None),

2008

use_ipv6=use_ipv6,

2009

gnutls_priority=

2010

server_settings["priority"],

2011

use_dbus=use_dbus)

2012

if not debug:

2013

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

2919

2014

try:

2920

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

2921

except IOError as e:

2922

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

2923

exc_info=e)

2015

pidfile = open(pidfilename, "w")

2016

except IOError:

2017

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

2924

2018

2925

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

2019

try:

2020

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

2021

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

2022

except KeyError:

2926

2023

try:

2927

uid = pwd.getpwnam(name).pw_uid

2928

gid = pwd.getpwnam(name).pw_gid

2929

break

2024

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

2025

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

2930

2026

except KeyError:

2931

continue

2932

else:

2933

uid = 65534

2934

gid = 65534

2027

try:

2028

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

2029

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

2030

except KeyError:

2031

uid = 65534

2032

gid = 65534

2935

2033

try:

2936

2034

os.setgid(gid)

2937

2035

os.setuid(uid)

2938

2036

except OSError as error:

2939

if error.errno != errno.EPERM:

2940

raise

2037

if error[0] != errno.EPERM:

2038

raise error

2039

2040

if not debug and not debuglevel:

2041

syslogger.setLevel(logging.WARNING)

2042

console.setLevel(logging.WARNING)

2043

if debuglevel:

2044

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

2045

syslogger.setLevel(level)

2046

console.setLevel(level)

2941

2047

2942

2048

if debug:

2943

2049

# Enable all possible GnuTLS debugging

2944

2050

2945

2051

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

2946

2052

# - GnuTLS manual

2947

gnutls.global_set_log_level(11)

2053

gnutls.library.functions.gnutls_global_set_log_level(11)

2948

2054

2949

@gnutls.log_func

2055

@gnutls.library.types.gnutls_log_func

2950

2056

def debug_gnutls(level, string):

2951

2057

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

2952

2058

2953

gnutls.global_set_log_function(debug_gnutls)

2059

(gnutls.library.functions

2060

.gnutls_global_set_log_function(debug_gnutls))

2954

2061

2955

2062

# Redirect stdin so all checkers get /dev/null

2956

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

2063

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

2957

2064

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

2958

2065

if null > 2:

2959

2066

os.close(null)

2067

else:

2068

# No console logging

2069

logger.removeHandler(console)

2960

2070

2961

2071

# Need to fork before connecting to D-Bus

2962

if not foreground:

2072

if not debug:

2963

2073

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

2964

2074

daemon()

2965

2075

2966

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

2967

# need to inform gobject that threads will be used.

2968

gobject.threads_init()

2969

2970

2076

global main_loop

2971

2077

# From the Avahi example code

2972

DBusGMainLoop(set_as_default=True)

2078

DBusGMainLoop(set_as_default=True )

2973

2079

main_loop = gobject.MainLoop()

2974

2080

bus = dbus.SystemBus()

2975

2081

# End of Avahi example code

2976

2082

if use_dbus:

2977

2083

try:

2978

2084

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

2979

bus,

2980

do_not_queue=True)

2981

old_bus_name = dbus.service.BusName(

2982

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

2983

do_not_queue=True)

2984

except dbus.exceptions.DBusException as e:

2985

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

2085

bus, do_not_queue=True)

2086

old_bus_name = (dbus.service.BusName

2087

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

2088

do_not_queue=True))

2089

except dbus.exceptions.NameExistsException as e:

2090

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

2986

2091

use_dbus = False

2987

2092

server_settings["use_dbus"] = False

2988

2093

tcp_server.use_dbus = False

2989

if zeroconf:

2990

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2991

service = AvahiServiceToSyslog(

2992

name = server_settings["servicename"],

2993

servicetype = "_mandos._tcp",

2994

protocol = protocol,

2995

bus = bus)

2996

if server_settings["interface"]:

2997

service.interface = if_nametoindex(

2998

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

2094

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2095

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

2096

servicetype = "_mandos._tcp",

2097

protocol = protocol, bus = bus)

2098

if server_settings["interface"]:

2099

service.interface = (if_nametoindex

2100

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

2999

2101

3000

2102

global multiprocessing_manager

3001

2103

multiprocessing_manager = multiprocessing.Manager()

3002

2104

3003

2105

client_class = Client

3004

2106

if use_dbus:

3005

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

3006

3007

client_settings = Client.config_parser(client_config)

2107

client_class = functools.partial(ClientDBusTransitional,

2108

bus = bus)

2109

2110

special_settings = {

2111

# Some settings need to be accessd by special methods;

2112

# booleans need .getboolean(), etc. Here is a list of them:

2113

"approved_by_default":

2114

lambda section:

2115

client_config.getboolean(section, "approved_by_default"),

2116

}

2117

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

2118

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

2119

# with exceptions for any special settings as defined above

2120

client_settings = dict((clientname,

2121

dict((setting,

2122

(value if setting not in special_settings

2123

else special_settings[setting](clientname)))

2124

for setting, value in client_config.items(clientname)))

2125

for clientname in client_config.sections())

2126

3008

2127

old_client_settings = {}

3009

clients_data = {}

3010

3011

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

3012

global wnull

3013

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

3014

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

3015

# mode

3016

if debug or not foreground:

3017

wnull.close()

3018

3019

# Get client data and settings from last running state.

2128

clients_data = []

2129

3020

2130

if server_settings["restore"]:

3021

2131

try:

3022

2132

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

3023

clients_data, old_client_settings = pickle.load(

3024

stored_state)

2133

clients_data, old_client_settings = pickle.load(stored_state)

3025

2134

os.remove(stored_state_path)

3026

2135

except IOError as e:

3027

if e.errno == errno.ENOENT:

3028

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

3029

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

3030

else:

3031

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

3032

exc_info=e)

2136

logger.warning("Could not load persistant state: {0}".format(e))

2137

if e.errno != errno.ENOENT:

3033

2138

raise

3034

except EOFError as e:

3035

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

3036

"EOFError:",

3037

exc_info=e)

3038

3039

with PGPEngine() as pgp:

3040

for client_name, client in clients_data.items():

3041

# Skip removed clients

3042

if client_name not in client_settings:

3043

continue

3044

3045

# Decide which value to use after restoring saved state.

3046

# We have three different values: Old config file,

3047

# new config file, and saved state.

3048

# New config value takes precedence if it differs from old

3049

# config value, otherwise use saved state.

3050

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

3051

try:

3052

# For each value in new config, check if it

3053

# differs from the old config value (Except for

3054

# the "secret" attribute)

3055

if (name != "secret"

3056

and (value !=

3057

old_client_settings[client_name][name])):

3058

client[name] = value

3059

except KeyError:

3060

pass

3061

3062

# Clients who has passed its expire date can still be

3063

# enabled if its last checker was successful. A Client

3064

# whose checker succeeded before we stored its state is

3065

# assumed to have successfully run all checkers during

3066

# downtime.

3067

if client["enabled"]:

3068

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

3069

if not client["last_checked_ok"]:

3070

logger.warning(

3071

"disabling client {} - Client never "

3072

"performed a successful checker".format(

3073

client_name))

3074

client["enabled"] = False

3075

elif client["last_checker_status"] != 0:

3076

logger.warning(

3077

"disabling client {} - Client last"

3078

" checker failed with error code"

3079

" {}".format(

3080

client_name,

3081

client["last_checker_status"]))

3082

client["enabled"] = False

3083

else:

3084

client["expires"] = (

3085

datetime.datetime.utcnow()

3086

+ client["timeout"])

3087

logger.debug("Last checker succeeded,"

3088

" keeping {} enabled".format(

3089

client_name))

2139

2140

for client in clients_data:

2141

client_name = client["name"]

2142

2143

# Decide which value to use after restoring saved state.

2144

# We have three different values: Old config file,

2145

# new config file, and saved state.

2146

# New config value takes precedence if it differs from old

2147

# config value, otherwise use saved state.

2148

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

3090

2149

try:

3091

client["secret"] = pgp.decrypt(

3092

client["encrypted_secret"],

3093

client_settings[client_name]["secret"])

3094

except PGPError:

3095

# If decryption fails, we use secret from new settings

3096

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

3097

client_name))

3098

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

3099

["secret"])

3100

3101

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

3102

for client_name in (set(old_client_settings)

3103

- set(client_settings)):

3104

del clients_data[client_name]

3105

for client_name in (set(client_settings)

3106

- set(old_client_settings)):

3107

clients_data[client_name] = client_settings[client_name]

3108

3109

# Create all client objects

3110

for client_name, client in clients_data.items():

3111

tcp_server.clients[client_name] = client_class(

3112

name = client_name,

3113

settings = client,

3114

server_settings = server_settings)

3115

2150

# For each value in new config, check if it differs

2151

# from the old config value (Except for the "secret"

2152

# attribute)

2153

if name != "secret" and value != old_client_settings[client_name][name]:

2154

setattr(client, name, value)

2155

except KeyError:

2156

pass

2157

2158

# Clients who has passed its expire date, can still be enabled if its

2159

# last checker was sucessful. Clients who checkers failed before we

2160

# stored it state is asumed to had failed checker during downtime.

2161

if client["enabled"] and client["last_checked_ok"]:

2162

if ((datetime.datetime.utcnow() - client["last_checked_ok"])

2163

> client["interval"]):

2164

if client["last_checker_status"] != 0:

2165

client["enabled"] = False

2166

else:

2167

client["expires"] = datetime.datetime.utcnow() + client["timeout"]

2168

2169

client["changedstate"] = (multiprocessing_manager

2170

.Condition(multiprocessing_manager

2171

.Lock()))

2172

if use_dbus:

2173

new_client = ClientDBusTransitional.__new__(ClientDBusTransitional)

2174

tcp_server.clients[client_name] = new_client

2175

new_client.bus = bus

2176

for name, value in client.iteritems():

2177

setattr(new_client, name, value)

2178

client_object_name = unicode(client_name).translate(

2179

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

2180

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

2181

new_client.dbus_object_path = (dbus.ObjectPath

2182

("/clients/" + client_object_name))

2183

DBusObjectWithProperties.__init__(new_client,

2184

new_client.bus,

2185

new_client.dbus_object_path)

2186

else:

2187

tcp_server.clients[client_name] = Client.__new__(Client)

2188

for name, value in client.iteritems():

2189

setattr(tcp_server.clients[client_name], name, value)

2190

2191

tcp_server.clients[client_name].decrypt_secret(

2192

client_settings[client_name]["secret"])

2193

2194

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

2195

for clientname in set(old_client_settings) - set(client_settings):

2196

del tcp_server.clients[clientname]

2197

for clientname in set(client_settings) - set(old_client_settings):

2198

tcp_server.clients[clientname] = (client_class(name = clientname,

2199

config =

2200

client_settings

2201

[clientname]))

2202

2203

3116

2204

if not tcp_server.clients:

3117

2205

logger.warning("No clients defined")

3118

3119

if not foreground:

3120

if pidfile is not None:

3121

pid = os.getpid()

3122

try:

3123

with pidfile:

3124

print(pid, file=pidfile)

3125

except IOError:

3126

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

3127

pidfilename, pid)

3128

del pidfile

2206

2207

if not debug:

2208

try:

2209

with pidfile:

2210

pid = os.getpid()

2211

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

2212

del pidfile

2213

except IOError:

2214

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

2215

pidfilename, pid)

2216

except NameError:

2217

# "pidfile" was never created

2218

pass

3129

2219

del pidfilename

2220

2221

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

3130

2222

3131

2223

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

3132

2224

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

3133

2225

3134

2226

if use_dbus:

3135

3136

@alternate_dbus_interfaces(

3137

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

3138

class MandosDBusService(DBusObjectWithObjectManager):

2227

class MandosDBusService(dbus.service.Object):

3139

2228

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

3140

3141

2229

def __init__(self):

3142

2230

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

3143

3144

2231

_interface = "se.recompile.Mandos"

3145

2232

3146

2233

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

3153

2240

"D-Bus signal"

3154

2241

pass

3155

2242

3156

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

3157

"true"})

3158

2243

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

3159

2244

def ClientRemoved(self, objpath, name):

3160

2245

"D-Bus signal"

3161

2246

pass

3162

2247

3163

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

3164

"true"})

3165

2248

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

3166

2249

def GetAllClients(self):

3167

2250

"D-Bus method"

3168

return dbus.Array(c.dbus_object_path for c in

2251

return dbus.Array(c.dbus_object_path

2252

for c in

3169

2253

tcp_server.clients.itervalues())

3170

2254

3171

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

3172

"true"})

3173

2255

@dbus.service.method(_interface,

3174

2256

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

3175

2257

def GetAllClientsWithProperties(self):

3176

2258

"D-Bus method"

3177

2259

return dbus.Dictionary(

3178

{ c.dbus_object_path: c.GetAll(

3179

"se.recompile.Mandos.Client")

3180

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

2260

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

2261

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

3181

2262

signature="oa{sv}")

3182

2263

3183

2264

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

3187

2268

if c.dbus_object_path == object_path:

3188

2269

del tcp_server.clients[c.name]

3189

2270

c.remove_from_connection()

3190

# Don't signal the disabling

2271

# Don't signal anything except ClientRemoved

3191

2272

c.disable(quiet=True)

3192

# Emit D-Bus signal for removal

3193

self.client_removed_signal(c)

2273

# Emit D-Bus signal

2274

self.ClientRemoved(object_path, c.name)

3194

2275

return

3195

2276

raise KeyError(object_path)

3196

2277

3197

2278

del _interface

3198

3199

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3200

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

3201

def GetManagedObjects(self):

3202

"""D-Bus method"""

3203

return dbus.Dictionary(

3204

{ client.dbus_object_path:

3205

dbus.Dictionary(

3206

{ interface: client.GetAll(interface)

3207

for interface in

3208

client._get_all_interface_names()})

3209

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

3210

3211

def client_added_signal(self, client):

3212

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

3213

if use_dbus:

3214

# New standard signal

3215

self.InterfacesAdded(

3216

client.dbus_object_path,

3217

dbus.Dictionary(

3218

{ interface: client.GetAll(interface)

3219

for interface in

3220

client._get_all_interface_names()}))

3221

# Old signal

3222

self.ClientAdded(client.dbus_object_path)

3223

3224

def client_removed_signal(self, client):

3225

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

3226

if use_dbus:

3227

# New standard signal

3228

self.InterfacesRemoved(

3229

client.dbus_object_path,

3230

client._get_all_interface_names())

3231

# Old signal

3232

self.ClientRemoved(client.dbus_object_path,

3233

client.name)

3234

2279

3235

mandos_dbus_service = MandosDBusService()

2280

class MandosDBusServiceTransitional(MandosDBusService):

2281

__metaclass__ = AlternateDBusNamesMetaclass

2282

mandos_dbus_service = MandosDBusServiceTransitional()

3236

2283

3237

2284

def cleanup():

3238

2285

"Cleanup function; run on exit"

3239

if zeroconf:

3240

service.cleanup()

2286

service.cleanup()

3241

2287

3242

2288

multiprocessing.active_children()

3243

wnull.close()

3244

2289

if not (tcp_server.clients or client_settings):

3245

2290

return

3246

3247

# Store client before exiting. Secrets are encrypted with key

3248

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

3249

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

3250

clients = {}

3251

with PGPEngine() as pgp:

3252

for client in tcp_server.clients.itervalues():

3253

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

3254

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

3255

key)

3256

client_dict = {}

3257

3258

# A list of attributes that can not be pickled

3259

# + secret.

3260

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

3261

"checker", "server_settings" }

3262

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

3263

.Object):

3264

exclude.add(name)

3265

3266

client_dict["encrypted_secret"] = (client

3267

.encrypted_secret)

3268

for attr in client.client_structure:

3269

if attr not in exclude:

3270

client_dict[attr] = getattr(client, attr)

3271

3272

clients[client.name] = client_dict

3273

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

3274

2291

2292

# Store client before exiting. Secrets are encrypted with key based

2293

# on what config file has. If config file is removed/edited, old

2294

# secret will thus be unrecovable.

2295

clients = []

2296

for client in tcp_server.clients.itervalues():

2297

client.encrypt_secret(client_settings[client.name]["secret"])

2298

2299

client_dict = {}

2300

2301

# A list of attributes that will not be stored when shuting down.

2302

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

2303

for name, typ in inspect.getmembers(dbus.service.Object):

2304

exclude.add(name)

2305

2306

client_dict["encrypted_secret"] = client.encrypted_secret

2307

for attr in client.client_structure:

2308

if attr not in exclude:

2309

client_dict[attr] = getattr(client, attr)

2310

2311

clients.append(client_dict)

2312

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

2313

3275

2314

try:

3276

with tempfile.NamedTemporaryFile(

3277

mode='wb',

3278

suffix=".pickle",

3279

prefix='clients-',

3280

dir=os.path.dirname(stored_state_path),

3281

delete=False) as stored_state:

2315

with os.fdopen(os.open(stored_state_path, os.O_CREAT|os.O_WRONLY|os.O_TRUNC, 0600), "wb") as stored_state:

3282

2316

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

3283

tempname = stored_state.name

3284

os.rename(tempname, stored_state_path)

3285

except (IOError, OSError) as e:

3286

if not debug:

3287

try:

3288

os.remove(tempname)

3289

except NameError:

3290

pass

3291

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

3292

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

3293

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

3294

else:

3295

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

3296

exc_info=e)

2317

except IOError as e:

2318

logger.warning("Could not save persistant state: {0}".format(e))

2319

if e.errno != errno.ENOENT:

3297

2320

raise

3298

2321

3299

2322

# Delete all clients, and settings from config

3300

2323

while tcp_server.clients:

3301

2324

name, client = tcp_server.clients.popitem()

3302

2325

if use_dbus:

3303

2326

client.remove_from_connection()

3304

# Don't signal the disabling

2327

# Don't signal anything except ClientRemoved

3305

2328

client.disable(quiet=True)

3306

# Emit D-Bus signal for removal

3307

2329

if use_dbus:

3308

mandos_dbus_service.client_removed_signal(client)

2330

# Emit D-Bus signal

2331

mandos_dbus_service.ClientRemoved(client

2332

.dbus_object_path,

2333

client.name)

3309

2334

client_settings.clear()

3310

2335

3311

2336

atexit.register(cleanup)

3312

2337

3313

2338

for client in tcp_server.clients.itervalues():

3314

2339

if use_dbus:

3315

# Emit D-Bus signal for adding

3316

mandos_dbus_service.client_added_signal(client)

2340

# Emit D-Bus signal

2341

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3317

2342

# Need to initiate checking of clients

3318

2343

if client.enabled:

3319

2344

client.init_checker()

2345

3320

2346

3321

2347

tcp_server.enable()

3322

2348

tcp_server.server_activate()

3323

2349

3324

2350

# Find out what port we got

3325

if zeroconf:

3326

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

2351

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

3327

2352

if use_ipv6:

3328

2353

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

3329

" flowinfo %d, scope_id %d",

3330

*tcp_server.socket.getsockname())

2354

" flowinfo %d, scope_id %d"

2355

% tcp_server.socket.getsockname())

3331

2356

else: # IPv4

3332

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

3333

*tcp_server.socket.getsockname())

2357

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

2358

% tcp_server.socket.getsockname())

3334

2359

3335

2360

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

3336

2361

3337

2362

try:

3338

if zeroconf:

3339

# From the Avahi example code

3340

try:

3341

service.activate()

3342

except dbus.exceptions.DBusException as error:

3343

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

3344

cleanup()

3345

sys.exit(1)

3346

# End of Avahi example code

2363

# From the Avahi example code

2364

try:

2365

service.activate()

2366

except dbus.exceptions.DBusException as error:

2367

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

2368

cleanup()

2369

sys.exit(1)

2370

# End of Avahi example code

3347

2371

3348

2372

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

3349

2373

lambda *args, **kwargs:

3353

2377

logger.debug("Starting main loop")

3354

2378

main_loop.run()

3355

2379

except AvahiError as error:

3356

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

2380

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

3357

2381

cleanup()

3358

2382

sys.exit(1)

3359

2383

except KeyboardInterrupt: