/mandos/trunk : revision 907

1

#!/usr/bin/python2.7

1

#!/usr/bin/python

2

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

3

#

3

#

4

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

5

#

5

#

6

# This program is partly derived from an example program for an Avahi

7

# service publisher, downloaded from

8

# <http://avahi.org/wiki/PythonPublishExample>. This includes the

9

# methods "add", "remove", "server_state_changed",

10

# "entry_group_state_changed", "cleanup", and "activate" in the

11

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

12

#

12

#

13

# Everything else is

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

14

15

16

#

17

# This file is part of Mandos.

18

#

19

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

20

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

19

21

# the Free Software Foundation, either version 3 of the License, or

20

22

# (at your option) any later version.

21

23

#

22

# This program is distributed in the hope that it will be useful,

23

# but WITHOUT ANY WARRANTY; without even the implied warranty of

24

# Mandos is distributed in the hope that it will be useful, but

25

# WITHOUT ANY WARRANTY; without even the implied warranty of

24

26

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

25

27

# GNU General Public License for more details.

26

#

28

#

27

29

# You should have received a copy of the GNU General Public License

28

# along with this program. If not, see

29

# <http://www.gnu.org/licenses/>.

30

#

30

# along with Mandos. If not, see <http://www.gnu.org/licenses/>.

31

#

31

32

# Contact the authors at <mandos@recompile.se>.

32

#

33

#

33

34

35

from __future__ import (division, absolute_import, print_function,

35

36

unicode_literals)

36

37

from future_builtins import *

38

try:

39

from future_builtins import *

40

except ImportError:

41

pass

38

42

39

43

try:

40

44

import SocketServer as socketserver

44

48

import argparse

45

49

import datetime

46

50

import errno

47

import gnutls.crypto

48

import gnutls.connection

49

import gnutls.errors

50

import gnutls.library.functions

51

import gnutls.library.constants

52

import gnutls.library.types

53

51

try:

54

52

import ConfigParser as configparser

55

53

except ImportError:

82

80

83

81

import dbus

84

82

import dbus.service

85

try:

86

import gobject

87

except ImportError:

88

from gi.repository import GObject as gobject

89

import avahi

83

from gi.repository import GLib

90

84

from dbus.mainloop.glib import DBusGMainLoop

91

85

import ctypes

92

86

import ctypes.util

93

87

import xml.dom.minidom

94

88

import inspect

95

89

90

# Try to find the value of SO_BINDTODEVICE:

96

91

try:

92

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

93

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

97

94

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

98

95

except AttributeError:

99

96

try:

97

# This is where SO_BINDTODEVICE was up to and including Python

98

# 2.6, and also 3.2:

100

99

from IN import SO_BINDTODEVICE

101

100

except ImportError:

102

SO_BINDTODEVICE = None

101

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

102

# Try running the C preprocessor:

103

try:

104

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

105

"/dev/stdin"],

106

stdin=subprocess.PIPE,

107

stdout=subprocess.PIPE)

108

stdout = cc.communicate(

109

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

110

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

111

except (OSError, ValueError, IndexError):

112

# No value found

113

SO_BINDTODEVICE = None

103

114

104

115

if sys.version_info.major == 2:

105

116

str = unicode

106

117

107

version = "1.6.9"

118

version = "1.7.15"

108

119

stored_state_file = "clients.pickle"

109

120

110

121

logger = logging.getLogger()

114

125

if_nametoindex = ctypes.cdll.LoadLibrary(

115

126

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

116

127

except (OSError, AttributeError):

117

128

118

129

def if_nametoindex(interface):

119

130

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

120

131

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

125

136

return interface_index

126

137

127

138

139

def copy_function(func):

140

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

141

if sys.version_info.major == 2:

142

return types.FunctionType(func.func_code,

143

func.func_globals,

144

func.func_name,

145

func.func_defaults,

146

func.func_closure)

147

else:

148

return types.FunctionType(func.__code__,

149

func.__globals__,

150

func.__name__,

151

func.__defaults__,

152

func.__closure__)

153

154

128

155

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

129

156

"""init logger and add loglevel"""

130

157

131

158

global syslogger

132

159

syslogger = (logging.handlers.SysLogHandler(

133

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

134

address = "/dev/log"))

160

facility=logging.handlers.SysLogHandler.LOG_DAEMON,

161

address="/dev/log"))

135

162

syslogger.setFormatter(logging.Formatter

136

163

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

137

164

' %(message)s'))

138

165

logger.addHandler(syslogger)

139

166

140

167

if debug:

141

168

console = logging.StreamHandler()

142

169

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

154

181

155

182

class PGPEngine(object):

156

183

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

157

184

158

185

def __init__(self):

159

186

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

187

self.gpg = "gpg"

188

try:

189

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

190

for line in output.splitlines():

191

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

192

if name == "gpg":

193

self.gpg = path

194

break

195

except OSError as e:

196

if e.errno != errno.ENOENT:

197

raise

160

198

self.gnupgargs = ['--batch',

161

'--home', self.tempdir,

199

'--homedir', self.tempdir,

162

200

'--force-mdc',

163

'--quiet',

164

'--no-use-agent']

165

201

'--quiet']

202

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

203

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

204

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

205

166

206

def __enter__(self):

167

207

return self

168

208

169

209

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

170

210

self._cleanup()

171

211

return False

172

212

173

213

def __del__(self):

174

214

self._cleanup()

175

215

176

216

def _cleanup(self):

177

217

if self.tempdir is not None:

178

218

# Delete contents of tempdir

179

219

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

180

topdown = False):

220

topdown=False):

181

221

for filename in files:

182

222

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

183

223

for dirname in dirs:

185

225

# Remove tempdir

186

226

os.rmdir(self.tempdir)

187

227

self.tempdir = None

188

228

189

229

def password_encode(self, password):

190

230

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

191

231

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

196

236

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

197

237

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

198

238

return encoded

199

239

200

240

def encrypt(self, data, password):

201

241

passphrase = self.password_encode(password)

202

242

with tempfile.NamedTemporaryFile(

203

243

dir=self.tempdir) as passfile:

204

244

passfile.write(passphrase)

205

245

passfile.flush()

206

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

246

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

207

247

'--passphrase-file',

208

248

passfile.name]

209

249

+ self.gnupgargs,

210

stdin = subprocess.PIPE,

211

stdout = subprocess.PIPE,

212

stderr = subprocess.PIPE)

213

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

250

stdin=subprocess.PIPE,

251

stdout=subprocess.PIPE,

252

stderr=subprocess.PIPE)

253

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

214

254

if proc.returncode != 0:

215

255

raise PGPError(err)

216

256

return ciphertext

217

257

218

258

def decrypt(self, data, password):

219

259

passphrase = self.password_encode(password)

220

260

with tempfile.NamedTemporaryFile(

221

dir = self.tempdir) as passfile:

261

dir=self.tempdir) as passfile:

222

262

passfile.write(passphrase)

223

263

passfile.flush()

224

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

264

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

225

265

'--passphrase-file',

226

266

passfile.name]

227

267

+ self.gnupgargs,

228

stdin = subprocess.PIPE,

229

stdout = subprocess.PIPE,

230

stderr = subprocess.PIPE)

231

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

268

stdin=subprocess.PIPE,

269

stdout=subprocess.PIPE,

270

stderr=subprocess.PIPE)

271

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

232

272

if proc.returncode != 0:

233

273

raise PGPError(err)

234

274

return decrypted_plaintext

235

275

236

276

277

# Pretend that we have an Avahi module

278

class Avahi(object):

279

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

280

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

281

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

282

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

283

PROTO_INET = 0 # avahi-common/address.h

284

PROTO_INET6 = 1 # avahi-common/address.h

285

DBUS_NAME = "org.freedesktop.Avahi"

286

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

287

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

288

DBUS_PATH_SERVER = "/"

289

290

def string_array_to_txt_array(self, t):

291

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

292

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

293

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

294

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

295

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

296

SERVER_INVALID = 0 # avahi-common/defs.h

297

SERVER_REGISTERING = 1 # avahi-common/defs.h

298

SERVER_RUNNING = 2 # avahi-common/defs.h

299

SERVER_COLLISION = 3 # avahi-common/defs.h

300

SERVER_FAILURE = 4 # avahi-common/defs.h

301

avahi = Avahi()

302

303

237

304

class AvahiError(Exception):

238

305

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

239

306

self.value = value

251

318

252

319

class AvahiService(object):

253

320

"""An Avahi (Zeroconf) service.

254

321

255

322

Attributes:

256

323

interface: integer; avahi.IF_UNSPEC or an interface index.

257

324

Used to optionally bind to the specified interface.

269

336

server: D-Bus Server

270

337

bus: dbus.SystemBus()

271

338

"""

272

339

273

340

def __init__(self,

274

interface = avahi.IF_UNSPEC,

275

name = None,

276

servicetype = None,

277

port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

341

interface=avahi.IF_UNSPEC,

342

name=None,

343

servicetype=None,

344

port=None,

345

TXT=None,

346

domain="",

347

host="",

348

max_renames=32768,

349

protocol=avahi.PROTO_UNSPEC,

350

bus=None):

284

351

self.interface = interface

285

352

self.name = name

286

353

self.type = servicetype

295

362

self.server = None

296

363

self.bus = bus

297

364

self.entry_group_state_changed_match = None

298

365

299

366

def rename(self, remove=True):

300

367

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

301

368

if self.rename_count >= self.max_renames:

321

388

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

322

389

self.cleanup()

323

390

os._exit(1)

324

391

325

392

def remove(self):

326

393

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

327

394

if self.entry_group_state_changed_match is not None:

329

396

self.entry_group_state_changed_match = None

330

397

if self.group is not None:

331

398

self.group.Reset()

332

399

333

400

def add(self):

334

401

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

335

402

self.remove()

352

419

dbus.UInt16(self.port),

353

420

avahi.string_array_to_txt_array(self.TXT))

354

421

self.group.Commit()

355

422

356

423

def entry_group_state_changed(self, state, error):

357

424

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

358

425

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

359

426

360

427

if state == avahi.ENTRY_GROUP_ESTABLISHED:

361

428

logger.debug("Zeroconf service established.")

362

429

elif state == avahi.ENTRY_GROUP_COLLISION:

366

433

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

367

434

str(error))

368

435

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

369

436

370

437

def cleanup(self):

371

438

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

372

439

if self.group is not None:

377

444

pass

378

445

self.group = None

379

446

self.remove()

380

447

381

448

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

382

449

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

383

450

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

395

462

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

396

463

self.cleanup()

397

464

elif state == avahi.SERVER_RUNNING:

398

self.add()

465

try:

466

self.add()

467

except dbus.exceptions.DBusException as error:

468

if (error.get_dbus_name()

469

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

470

logger.info("Local Zeroconf service name"

471

" collision.")

472

return self.rename(remove=False)

473

else:

474

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

475

self.cleanup()

476

os._exit(1)

399

477

else:

400

478

if error is None:

401

479

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

402

480

else:

403

481

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

404

482

405

483

def activate(self):

406

484

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

407

485

if self.server is None:

425

503

return ret

426

504

427

505

506

# Pretend that we have a GnuTLS module

507

class GnuTLS(object):

508

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

509

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

510

511

library = ctypes.util.find_library("gnutls")

512

if library is None:

513

library = ctypes.util.find_library("gnutls-deb0")

514

_library = ctypes.cdll.LoadLibrary(library)

515

del library

516

_need_version = b"3.3.0"

517

518

def __init__(self):

519

# Need to use "self" here, since this method is called before

520

# the assignment to the "gnutls" global variable happens.

521

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

522

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

523

.format(self._need_version))

524

525

# Unless otherwise indicated, the constants and types below are

526

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

527

528

# Constants

529

E_SUCCESS = 0

530

E_INTERRUPTED = -52

531

E_AGAIN = -28

532

CRT_OPENPGP = 2

533

CLIENT = 2

534

SHUT_RDWR = 0

535

CRD_CERTIFICATE = 1

536

E_NO_CERTIFICATE_FOUND = -49

537

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

538

539

# Types

540

class session_int(ctypes.Structure):

541

_fields_ = []

542

session_t = ctypes.POINTER(session_int)

543

544

class certificate_credentials_st(ctypes.Structure):

545

_fields_ = []

546

certificate_credentials_t = ctypes.POINTER(

547

certificate_credentials_st)

548

certificate_type_t = ctypes.c_int

549

550

class datum_t(ctypes.Structure):

551

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

552

('size', ctypes.c_uint)]

553

554

class openpgp_crt_int(ctypes.Structure):

555

_fields_ = []

556

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

557

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

558

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

559

credentials_type_t = ctypes.c_int

560

transport_ptr_t = ctypes.c_void_p

561

close_request_t = ctypes.c_int

562

563

# Exceptions

564

class Error(Exception):

565

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

566

# exception might be raised from within GnuTLS.__init__,

567

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

568

# global variable has happened.

569

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

570

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

571

# code is passed, convert it to a string with

572

# gnutls.strerror()

573

self.code = code

574

if message is None and code is not None:

575

message = GnuTLS.strerror(code)

576

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

577

message, *args)

578

579

class CertificateSecurityError(Error):

580

pass

581

582

# Classes

583

class Credentials(object):

584

def __init__(self):

585

self._c_object = gnutls.certificate_credentials_t()

586

gnutls.certificate_allocate_credentials(

587

ctypes.byref(self._c_object))

588

self.type = gnutls.CRD_CERTIFICATE

589

590

def __del__(self):

591

gnutls.certificate_free_credentials(self._c_object)

592

593

class ClientSession(object):

594

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

595

self._c_object = gnutls.session_t()

596

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

597

gnutls.set_default_priority(self._c_object)

598

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

599

gnutls.handshake_set_private_extensions(self._c_object,

600

True)

601

self.socket = socket

602

if credentials is None:

603

credentials = gnutls.Credentials()

604

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

605

ctypes.cast(credentials._c_object,

606

ctypes.c_void_p))

607

self.credentials = credentials

608

609

def __del__(self):

610

gnutls.deinit(self._c_object)

611

612

def handshake(self):

613

return gnutls.handshake(self._c_object)

614

615

def send(self, data):

616

data = bytes(data)

617

data_len = len(data)

618

while data_len > 0:

619

data_len -= gnutls.record_send(self._c_object,

620

data[-data_len:],

621

data_len)

622

623

def bye(self):

624

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

625

626

# Error handling functions

627

def _error_code(result):

628

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

629

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

630

if result >= 0:

631

return result

632

if result == gnutls.E_NO_CERTIFICATE_FOUND:

633

raise gnutls.CertificateSecurityError(code=result)

634

raise gnutls.Error(code=result)

635

636

def _retry_on_error(result, func, arguments):

637

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

638

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

639

while result < 0:

640

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

641

return _error_code(result)

642

result = func(*arguments)

643

return result

644

645

# Unless otherwise indicated, the function declarations below are

646

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

647

648

# Functions

649

priority_set_direct = _library.gnutls_priority_set_direct

650

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

651

ctypes.POINTER(ctypes.c_char_p)]

652

priority_set_direct.restype = _error_code

653

654

init = _library.gnutls_init

655

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

656

init.restype = _error_code

657

658

set_default_priority = _library.gnutls_set_default_priority

659

set_default_priority.argtypes = [session_t]

660

set_default_priority.restype = _error_code

661

662

record_send = _library.gnutls_record_send

663

record_send.argtypes = [session_t, ctypes.c_void_p,

664

ctypes.c_size_t]

665

record_send.restype = ctypes.c_ssize_t

666

record_send.errcheck = _retry_on_error

667

668

certificate_allocate_credentials = (

669

_library.gnutls_certificate_allocate_credentials)

670

certificate_allocate_credentials.argtypes = [

671

ctypes.POINTER(certificate_credentials_t)]

672

certificate_allocate_credentials.restype = _error_code

673

674

certificate_free_credentials = (

675

_library.gnutls_certificate_free_credentials)

676

certificate_free_credentials.argtypes = [

677

certificate_credentials_t]

678

certificate_free_credentials.restype = None

679

680

handshake_set_private_extensions = (

681

_library.gnutls_handshake_set_private_extensions)

682

handshake_set_private_extensions.argtypes = [session_t,

683

ctypes.c_int]

684

handshake_set_private_extensions.restype = None

685

686

credentials_set = _library.gnutls_credentials_set

687

credentials_set.argtypes = [session_t, credentials_type_t,

688

ctypes.c_void_p]

689

credentials_set.restype = _error_code

690

691

strerror = _library.gnutls_strerror

692

strerror.argtypes = [ctypes.c_int]

693

strerror.restype = ctypes.c_char_p

694

695

certificate_type_get = _library.gnutls_certificate_type_get

696

certificate_type_get.argtypes = [session_t]

697

certificate_type_get.restype = _error_code

698

699

certificate_get_peers = _library.gnutls_certificate_get_peers

700

certificate_get_peers.argtypes = [session_t,

701

ctypes.POINTER(ctypes.c_uint)]

702

certificate_get_peers.restype = ctypes.POINTER(datum_t)

703

704

global_set_log_level = _library.gnutls_global_set_log_level

705

global_set_log_level.argtypes = [ctypes.c_int]

706

global_set_log_level.restype = None

707

708

global_set_log_function = _library.gnutls_global_set_log_function

709

global_set_log_function.argtypes = [log_func]

710

global_set_log_function.restype = None

711

712

deinit = _library.gnutls_deinit

713

deinit.argtypes = [session_t]

714

deinit.restype = None

715

716

handshake = _library.gnutls_handshake

717

handshake.argtypes = [session_t]

718

handshake.restype = _error_code

719

handshake.errcheck = _retry_on_error

720

721

transport_set_ptr = _library.gnutls_transport_set_ptr

722

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

723

transport_set_ptr.restype = None

724

725

bye = _library.gnutls_bye

726

bye.argtypes = [session_t, close_request_t]

727

bye.restype = _error_code

728

bye.errcheck = _retry_on_error

729

730

check_version = _library.gnutls_check_version

731

check_version.argtypes = [ctypes.c_char_p]

732

check_version.restype = ctypes.c_char_p

733

734

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

735

736

openpgp_crt_init = _library.gnutls_openpgp_crt_init

737

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

738

openpgp_crt_init.restype = _error_code

739

740

openpgp_crt_import = _library.gnutls_openpgp_crt_import

741

openpgp_crt_import.argtypes = [openpgp_crt_t,

742

ctypes.POINTER(datum_t),

743

openpgp_crt_fmt_t]

744

openpgp_crt_import.restype = _error_code

745

746

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

747

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

748

ctypes.POINTER(ctypes.c_uint)]

749

openpgp_crt_verify_self.restype = _error_code

750

751

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

752

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

753

openpgp_crt_deinit.restype = None

754

755

openpgp_crt_get_fingerprint = (

756

_library.gnutls_openpgp_crt_get_fingerprint)

757

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

758

ctypes.c_void_p,

759

ctypes.POINTER(

760

ctypes.c_size_t)]

761

openpgp_crt_get_fingerprint.restype = _error_code

762

763

# Remove non-public functions

764

del _error_code, _retry_on_error

765

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

766

gnutls = GnuTLS()

767

768

769

def call_pipe(connection, # : multiprocessing.Connection

770

func, *args, **kwargs):

771

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

772

773

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

774

return value on the provided multiprocessing.Connection.

775

"""

776

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

777

connection.close()

778

779

428

780

class Client(object):

429

781

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

430

782

431

783

Attributes:

432

784

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

433

785

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

435

787

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

436

788

to see if the client lives.

437

789

'None' if no process is running.

438

checker_callback_tag: a gobject event source tag, or None

790

checker_callback_tag: a GLib event source tag, or None

439

791

checker_command: string; External command which is run to check

440

792

if client lives. %() expansions are done at

441

793

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

442

794

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

443

checker_initiator_tag: a gobject event source tag, or None

795

checker_initiator_tag: a GLib event source tag, or None

444

796

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

445

797

client_structure: Object describing what attributes a client has

446

798

and is used for storing the client at exit

447

799

current_checker_command: string; current running checker_command

448

disable_initiator_tag: a gobject event source tag, or None

800

disable_initiator_tag: a GLib event source tag, or None

449

801

enabled: bool()

450

802

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

451

803

uniquely identify the client

456

808

last_checker_status: integer between 0 and 255 reflecting exit

457

809

status of last checker. -1 reflects crashed

458

810

checker, -2 means no checker completed yet.

811

last_checker_signal: The signal which killed the last checker, if

812

last_checker_status is -1

459

813

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

460

814

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

461

815

D-Bus identifiers

468

822

disabled, or None

469

823

server_settings: The server_settings dict from main()

470

824

"""

471

825

472

826

runtime_expansions = ("approval_delay", "approval_duration",

473

827

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

474

828

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

485

839

"approved_by_default": "True",

486

840

"enabled": "True",

487

841

}

488

842

489

843

@staticmethod

490

844

def config_parser(config):

491

845

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

498

852

for client_name in config.sections():

499

853

section = dict(config.items(client_name))

500

854

client = settings[client_name] = {}

501

855

502

856

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

503

857

# Reformat values from string types to Python types

504

858

client["approved_by_default"] = config.getboolean(

505

859

client_name, "approved_by_default")

506

860

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

507

861

"enabled")

508

862

509

863

# Uppercase and remove spaces from fingerprint for later

510

864

# comparison purposes with return value from the

511

865

# fingerprint() function

512

866

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

513

867

.replace(" ", ""))

514

868

if "secret" in section:

515

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

869

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

870

.encode("utf-8"),

871

"base64")

516

872

elif "secfile" in section:

517

873

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

518

874

(section["secfile"])),

533

889

client["last_approval_request"] = None

534

890

client["last_checked_ok"] = None

535

891

client["last_checker_status"] = -2

536

892

537

893

return settings

538

539

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

894

895

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

540

896

self.name = name

541

897

if server_settings is None:

542

898

server_settings = {}

544

900

# adding all client settings

545

901

for setting, value in settings.items():

546

902

setattr(self, setting, value)

547

903

548

904

if self.enabled:

549

905

if not hasattr(self, "last_enabled"):

550

906

self.last_enabled = datetime.datetime.utcnow()

554

910

else:

555

911

self.last_enabled = None

556

912

self.expires = None

557

913

558

914

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

559

915

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

560

916

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

561

917

datetime.datetime.utcnow())

562

918

563

919

# attributes specific for this server instance

564

920

self.checker = None

565

921

self.checker_initiator_tag = None

571

927

self.changedstate = multiprocessing_manager.Condition(

572

928

multiprocessing_manager.Lock())

573

929

self.client_structure = [attr

574

for attr in self.__dict__.iterkeys()

930

for attr in self.__dict__.keys()

575

931

if not attr.startswith("_")]

576

932

self.client_structure.append("client_structure")

577

933

578

934

for name, t in inspect.getmembers(

579

935

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

580

936

if not name.startswith("_"):

581

937

self.client_structure.append(name)

582

938

583

939

# Send notice to process children that client state has changed

584

940

def send_changedstate(self):

585

941

with self.changedstate:

586

942

self.changedstate.notify_all()

587

943

588

944

def enable(self):

589

945

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

590

946

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

595

951

self.last_enabled = datetime.datetime.utcnow()

596

952

self.init_checker()

597

953

self.send_changedstate()

598

954

599

955

def disable(self, quiet=True):

600

956

"""Disable this client."""

601

957

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

603

959

if not quiet:

604

960

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

605

961

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

606

gobject.source_remove(self.disable_initiator_tag)

962

GLib.source_remove(self.disable_initiator_tag)

607

963

self.disable_initiator_tag = None

608

964

self.expires = None

609

965

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

610

gobject.source_remove(self.checker_initiator_tag)

966

GLib.source_remove(self.checker_initiator_tag)

611

967

self.checker_initiator_tag = None

612

968

self.stop_checker()

613

969

self.enabled = False

614

970

if not quiet:

615

971

self.send_changedstate()

616

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

972

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

617

973

return False

618

974

619

975

def __del__(self):

620

976

self.disable()

621

977

622

978

def init_checker(self):

623

979

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

624

980

# and every interval from then on.

625

981

if self.checker_initiator_tag is not None:

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = gobject.timeout_add(

982

GLib.source_remove(self.checker_initiator_tag)

983

self.checker_initiator_tag = GLib.timeout_add(

628

984

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

629

985

self.start_checker)

630

986

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

631

987

if self.disable_initiator_tag is not None:

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = gobject.timeout_add(

988

GLib.source_remove(self.disable_initiator_tag)

989

self.disable_initiator_tag = GLib.timeout_add(

634

990

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

635

991

# Also start a new checker *right now*.

636

992

self.start_checker()

637

638

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

993

994

def checker_callback(self, source, condition, connection,

995

command):

639

996

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

640

997

self.checker_callback_tag = None

641

998

self.checker = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

999

# Read return code from connection (see call_pipe)

1000

returncode = connection.recv()

1001

connection.close()

1002

1003

if returncode >= 0:

1004

self.last_checker_status = returncode

1005

self.last_checker_signal = None

644

1006

if self.last_checker_status == 0:

645

1007

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

646

1008

vars(self))

649

1011

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

650

1012

else:

651

1013

self.last_checker_status = -1

1014

self.last_checker_signal = -returncode

652

1015

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

653

1016

vars(self))

654

1017

return False

1018

655

1019

def checked_ok(self):

656

1020

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

657

1021

self.last_checked_ok = datetime.datetime.utcnow()

658

1022

self.last_checker_status = 0

1023

self.last_checker_signal = None

659

1024

self.bump_timeout()

660

1025

661

1026

def bump_timeout(self, timeout=None):

662

1027

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

663

1028

if timeout is None:

664

1029

timeout = self.timeout

665

1030

if self.disable_initiator_tag is not None:

666

gobject.source_remove(self.disable_initiator_tag)

1031

GLib.source_remove(self.disable_initiator_tag)

667

1032

self.disable_initiator_tag = None

668

1033

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

669

self.disable_initiator_tag = gobject.timeout_add(

1034

self.disable_initiator_tag = GLib.timeout_add(

670

1035

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

671

1036

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

672

1037

673

1038

def need_approval(self):

674

1039

self.last_approval_request = datetime.datetime.utcnow()

675

1040

676

1041

def start_checker(self):

677

1042

"""Start a new checker subprocess if one is not running.

678

1043

679

1044

If a checker already exists, leave it running and do

680

1045

nothing."""

681

1046

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

686

1051

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

687

1052

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

688

1053

# should be.

689

690

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

691

try:

692

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

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

698

else:

699

if pid:

700

logger.warning("Checker was a zombie")

701

gobject.source_remove(self.checker_callback_tag)

702

self.checker_callback(pid, status,

703

self.current_checker_command)

1054

1055

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

1056

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

1057

self.checker.join()

1058

self.checker = None

704

1059

# Start a new checker if needed

705

1060

if self.checker is None:

706

1061

# Escape attributes for the shell

707

1062

escaped_attrs = {

708

1063

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

709

for attr in self.runtime_expansions }

1064

for attr in self.runtime_expansions}

710

1065

try:

711

1066

command = self.checker_command % escaped_attrs

712

1067

except TypeError as error:

715

1070

exc_info=error)

716

1071

return True # Try again later

717

1072

self.current_checker_command = command

718

try:

719

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

720

self.name)

721

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

722

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

723

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

724

# always replaced by /dev/null.)

725

# The exception is when not debugging but nevertheless

726

# running in the foreground; use the previously

727

# created wnull.

728

popen_args = {}

729

if (not self.server_settings["debug"]

730

and self.server_settings["foreground"]):

731

popen_args.update({"stdout": wnull,

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True,

736

cwd="/",

737

**popen_args)

738

except OSError as error:

739

logger.error("Failed to start subprocess",

740

exc_info=error)

741

return True

742

self.checker_callback_tag = gobject.child_watch_add(

743

self.checker.pid, self.checker_callback, data=command)

744

# The checker may have completed before the gobject

745

# watch was added. Check for this.

746

try:

747

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

748

except OSError as error:

749

if error.errno == errno.ECHILD:

750

# This should never happen

751

logger.error("Child process vanished",

752

exc_info=error)

753

return True

754

raise

755

if pid:

756

gobject.source_remove(self.checker_callback_tag)

757

self.checker_callback(pid, status, command)

758

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

1073

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

1074

self.name)

1075

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

1076

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

1077

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

1078

# always replaced by /dev/null.)

1079

# The exception is when not debugging but nevertheless

1080

# running in the foreground; use the previously

1081

# created wnull.

1082

popen_args = {"close_fds": True,

1083

"shell": True,

1084

"cwd": "/"}

1085

if (not self.server_settings["debug"]

1086

and self.server_settings["foreground"]):

1087

popen_args.update({"stdout": wnull,

1088

"stderr": wnull})

1089

pipe = multiprocessing.Pipe(duplex=False)

1090

self.checker = multiprocessing.Process(

1091

target=call_pipe,

1092

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

1093

kwargs=popen_args)

1094

self.checker.start()

1095

self.checker_callback_tag = GLib.io_add_watch(

1096

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

1097

self.checker_callback, pipe[0], command)

1098

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

759

1099

return True

760

1100

761

1101

def stop_checker(self):

762

1102

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

763

1103

if self.checker_callback_tag:

764

gobject.source_remove(self.checker_callback_tag)

1104

GLib.source_remove(self.checker_callback_tag)

765

1105

self.checker_callback_tag = None

766

1106

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

767

1107

return

768

1108

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

769

try:

770

self.checker.terminate()

771

#time.sleep(0.5)

772

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

773

# self.checker.kill()

774

except OSError as error:

775

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

776

raise

1109

self.checker.terminate()

777

1110

self.checker = None

778

1111

779

1112

783

1116

byte_arrays=False):

784

1117

"""Decorators for marking methods of a DBusObjectWithProperties to

785

1118

become properties on the D-Bus.

786

1119

787

1120

The decorated method will be called with no arguments by "Get"

788

1121

and with one argument by "Set".

789

1122

790

1123

The parameters, where they are supported, are the same as

791

1124

dbus.service.method, except there is only "signature", since the

792

1125

type from Get() and the type sent to Set() is the same.

796

1129

if byte_arrays and signature != "ay":

797

1130

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

798

1131

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

799

1132

800

1133

def decorator(func):

801

1134

func._dbus_is_property = True

802

1135

func._dbus_interface = dbus_interface

805

1138

func._dbus_name = func.__name__

806

1139

if func._dbus_name.endswith("_dbus_property"):

807

1140

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

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

809

1142

return func

810

1143

811

1144

return decorator

812

1145

813

1146

814

1147

def dbus_interface_annotations(dbus_interface):

815

1148

"""Decorator for marking functions returning interface annotations

816

1149

817

1150

Usage:

818

1151

819

1152

@dbus_interface_annotations("org.example.Interface")

820

1153

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

821

1154

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

822

1155

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

823

1156

"false"}

824

1157

"""

825

1158

826

1159

def decorator(func):

827

1160

func._dbus_is_interface = True

828

1161

func._dbus_interface = dbus_interface

829

1162

func._dbus_name = dbus_interface

830

1163

return func

831

1164

832

1165

return decorator

833

1166

834

1167

835

1168

def dbus_annotations(annotations):

836

1169

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

837

1170

Usage:

838

1171

839

1172

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

840

1173

"org.freedesktop.DBus.Property."

841

1174

"EmitsChangedSignal": "false"})

843

1176

access="r")

844

1177

def Property_dbus_property(self):

845

1178

return dbus.Boolean(False)

1179

1180

See also the DBusObjectWithAnnotations class.

846

1181

"""

847

1182

848

1183

def decorator(func):

849

1184

func._dbus_annotations = annotations

850

1185

return func

851

1186

852

1187

return decorator

853

1188

854

1189

870

1205

pass

871

1206

872

1207

873

class DBusObjectWithProperties(dbus.service.Object):

874

"""A D-Bus object with properties.

875

876

Classes inheriting from this can use the dbus_service_property

877

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

878

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

1208

class DBusObjectWithAnnotations(dbus.service.Object):

1209

"""A D-Bus object with annotations.

1210

1211

Classes inheriting from this can use the dbus_annotations

1212

decorator to add annotations to methods or signals.

879

1213

"""

880

1214

881

1215

@staticmethod

882

1216

def _is_dbus_thing(thing):

883

1217

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

884

1218

885

1219

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

886

1220

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

887

1221

"""

888

1222

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

889

1223

False)

890

1224

891

1225

def _get_all_dbus_things(self, thing):

892

1226

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

893

1227

"""

896

1230

for cls in self.__class__.__mro__

897

1231

for name, athing in

898

1232

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

899

1233

1234

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1235

out_signature="s",

1236

path_keyword='object_path',

1237

connection_keyword='connection')

1238

def Introspect(self, object_path, connection):

1239

"""Overloading of standard D-Bus method.

1240

1241

Inserts annotation tags on methods and signals.

1242

"""

1243

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

1244

connection)

1245

try:

1246

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

1247

1248

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

1249

# Add annotation tags

1250

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

1251

for tag in if_tag.getElementsByTagName(typ):

1252

annots = dict()

1253

for name, prop in (self.

1254

_get_all_dbus_things(typ)):

1255

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

1256

and prop._dbus_interface

1257

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

1258

annots.update(getattr(

1259

prop, "_dbus_annotations", {}))

1260

for name, value in annots.items():

1261

ann_tag = document.createElement(

1262

"annotation")

1263

ann_tag.setAttribute("name", name)

1264

ann_tag.setAttribute("value", value)

1265

tag.appendChild(ann_tag)

1266

# Add interface annotation tags

1267

for annotation, value in dict(

1268

itertools.chain.from_iterable(

1269

annotations().items()

1270

for name, annotations

1271

in self._get_all_dbus_things("interface")

1272

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

1273

)).items():

1274

ann_tag = document.createElement("annotation")

1275

ann_tag.setAttribute("name", annotation)

1276

ann_tag.setAttribute("value", value)

1277

if_tag.appendChild(ann_tag)

1278

# Fix argument name for the Introspect method itself

1279

if (if_tag.getAttribute("name")

1280

== dbus.INTROSPECTABLE_IFACE):

1281

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

1282

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

1283

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

1284

if (arg.getAttribute("direction")

1285

== "out"):

1286

arg.setAttribute("name",

1287

"xml_data")

1288

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

1289

document.unlink()

1290

except (AttributeError, xml.dom.DOMException,

1291

xml.parsers.expat.ExpatError) as error:

1292

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

1293

exc_info=error)

1294

return xmlstring

1295

1296

1297

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1298

"""A D-Bus object with properties.

1299

1300

Classes inheriting from this can use the dbus_service_property

1301

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

1302

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

1303

"""

1304

900

1305

def _get_dbus_property(self, interface_name, property_name):

901

1306

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

902

1307

property with the specified name and interface.

907

1312

if (value._dbus_name == property_name

908

1313

and value._dbus_interface == interface_name):

909

1314

return value.__get__(self)

910

1315

911

1316

# No such property

912

1317

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

913

1318

self.dbus_object_path, interface_name, property_name))

914

1319

1320

@classmethod

1321

def _get_all_interface_names(cls):

1322

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

1323

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

1324

"_dbus_interface", None)

1325

for x in (inspect.getmro(cls))

1326

for attr in dir(x))

1327

if name is not None)

1328

915

1329

@dbus.service.method(dbus.PROPERTIES_IFACE,

916

1330

in_signature="ss",

917

1331

out_signature="v")

925

1339

if not hasattr(value, "variant_level"):

926

1340

return value

927

1341

return type(value)(value, variant_level=value.variant_level+1)

928

1342

929

1343

@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ssv")

930

1344

def Set(self, interface_name, property_name, value):

931

1345

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

943

1357

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

944

1358

for byte in value))

945

1359

prop(value)

946

1360

947

1361

@dbus.service.method(dbus.PROPERTIES_IFACE,

948

1362

in_signature="s",

949

1363

out_signature="a{sv}")

950

1364

def GetAll(self, interface_name):

951

1365

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

952

1366

standard.

953

1367

954

1368

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

955

1369

"""

956

1370

properties = {}

967

1381

properties[name] = value

968

1382

continue

969

1383

properties[name] = type(value)(

970

value, variant_level = value.variant_level + 1)

1384

value, variant_level=value.variant_level + 1)

971

1385

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

972

1386

973

1387

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

974

1388

def PropertiesChanged(self, interface_name, changed_properties,

975

1389

invalidated_properties):

977

1391

standard.

978

1392

"""

979

1393

pass

980

1394

981

1395

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

982

1396

out_signature="s",

983

1397

path_keyword='object_path',

984

1398

connection_keyword='connection')

985

1399

def Introspect(self, object_path, connection):

986

1400

"""Overloading of standard D-Bus method.

987

1401

988

1402

Inserts property tags and interface annotation tags.

989

1403

"""

990

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

991

connection)

1404

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1405

object_path,

1406

connection)

992

1407

try:

993

1408

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

994

1409

995

1410

def make_tag(document, name, prop):

996

1411

e = document.createElement("property")

997

1412

e.setAttribute("name", name)

998

1413

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

999

1414

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

1000

1415

return e

1001

1416

1002

1417

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

1003

1418

# Add property tags

1004

1419

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

1007

1422

if prop._dbus_interface

1008

1423

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

1009

1424

if_tag.appendChild(tag)

1010

# Add annotation tags

1011

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

1012

for tag in if_tag.getElementsByTagName(typ):

1013

annots = dict()

1014

for name, prop in (self.

1015

_get_all_dbus_things(typ)):

1016

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

1017

and prop._dbus_interface

1018

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

1019

annots.update(getattr(

1020

prop, "_dbus_annotations", {}))

1021

for name, value in annots.items():

1022

ann_tag = document.createElement(

1023

"annotation")

1024

ann_tag.setAttribute("name", name)

1025

ann_tag.setAttribute("value", value)

1026

tag.appendChild(ann_tag)

1027

# Add interface annotation tags

1028

for annotation, value in dict(

1029

itertools.chain.from_iterable(

1030

annotations().items()

1031

for name, annotations

1032

in self._get_all_dbus_things("interface")

1033

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

1034

)).items():

1035

ann_tag = document.createElement("annotation")

1036

ann_tag.setAttribute("name", annotation)

1037

ann_tag.setAttribute("value", value)

1038

if_tag.appendChild(ann_tag)

1425

# Add annotation tags for properties

1426

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

1427

annots = dict()

1428

for name, prop in self._get_all_dbus_things(

1429

"property"):

1430

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

1431

and prop._dbus_interface

1432

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

1433

annots.update(getattr(

1434

prop, "_dbus_annotations", {}))

1435

for name, value in annots.items():

1436

ann_tag = document.createElement(

1437

"annotation")

1438

ann_tag.setAttribute("name", name)

1439

ann_tag.setAttribute("value", value)

1440

tag.appendChild(ann_tag)

1039

1441

# Add the names to the return values for the

1040

1442

# "org.freedesktop.DBus.Properties" methods

1041

1443

if (if_tag.getAttribute("name")

1060

1462

return xmlstring

1061

1463

1062

1464

1465

try:

1466

dbus.OBJECT_MANAGER_IFACE

1467

except AttributeError:

1468

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

1469

1470

1471

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1472

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

1473

1474

Classes inheriting from this exposes the standard

1475

GetManagedObjects call and the InterfacesAdded and

1476

InterfacesRemoved signals on the standard

1477

"org.freedesktop.DBus.ObjectManager" interface.

1478

1479

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

1480

manually.

1481

"""

1482

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1483

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

1484

def GetManagedObjects(self):

1485

"""This function must be overridden"""

1486

raise NotImplementedError()

1487

1488

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1489

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

1490

def InterfacesAdded(self, object_path, interfaces_and_properties):

1491

pass

1492

1493

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

1494

def InterfacesRemoved(self, object_path, interfaces):

1495

pass

1496

1497

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1498

out_signature="s",

1499

path_keyword='object_path',

1500

connection_keyword='connection')

1501

def Introspect(self, object_path, connection):

1502

"""Overloading of standard D-Bus method.

1503

1504

Override return argument name of GetManagedObjects to be

1505

"objpath_interfaces_and_properties"

1506

"""

1507

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1508

object_path,

1509

connection)

1510

try:

1511

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

1512

1513

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

1514

# Fix argument name for the GetManagedObjects method

1515

if (if_tag.getAttribute("name")

1516

== dbus.OBJECT_MANAGER_IFACE):

1517

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

1518

if (cn.getAttribute("name")

1519

== "GetManagedObjects"):

1520

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

1521

if (arg.getAttribute("direction")

1522

== "out"):

1523

arg.setAttribute(

1524

"name",

1525

"objpath_interfaces"

1526

"_and_properties")

1527

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

1528

document.unlink()

1529

except (AttributeError, xml.dom.DOMException,

1530

xml.parsers.expat.ExpatError) as error:

1531

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

1532

exc_info=error)

1533

return xmlstring

1534

1535

1063

1536

def datetime_to_dbus(dt, variant_level=0):

1064

1537

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

1065

1538

if dt is None:

1066

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

1539

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

1067

1540

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

1068

1541

1069

1542

1072

1545

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

1073

1546

interface names according to the "alt_interface_names" mapping.

1074

1547

Usage:

1075

1548

1076

1549

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

1077

1550

"net.example.AlternateInterface"})

1078

1551

class SampleDBusObject(dbus.service.Object):

1079

1552

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

1080

1553

def SampleDBusMethod():

1081

1554

pass

1082

1555

1083

1556

The above "SampleDBusMethod" on "SampleDBusObject" will be

1084

1557

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

1085

1558

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

1086

1559

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

1087

1560

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

1088

1561

1089

1562

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

1090

1563

(from DBusObjectWithProperties) and interfaces (from the

1091

1564

dbus_interface_annotations decorator).

1092

1565

"""

1093

1566

1094

1567

def wrapper(cls):

1095

1568

for orig_interface_name, alt_interface_name in (

1096

1569

alt_interface_names.items()):

1113

1586

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

1114

1587

# Extract the original non-method undecorated

1115

1588

# function by black magic

1116

nonmethod_func = (dict(

1117

zip(attribute.func_code.co_freevars,

1118

attribute.__closure__))

1119

["func"].cell_contents)

1589

if sys.version_info.major == 2:

1590

nonmethod_func = (dict(

1591

zip(attribute.func_code.co_freevars,

1592

attribute.__closure__))

1593

["func"].cell_contents)

1594

else:

1595

nonmethod_func = (dict(

1596

zip(attribute.__code__.co_freevars,

1597

attribute.__closure__))

1598

["func"].cell_contents)

1120

1599

# Create a new, but exactly alike, function

1121

1600

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

1122

1601

# with the alternate D-Bus interface name

1602

new_function = copy_function(nonmethod_func)

1123

1603

new_function = (dbus.service.signal(

1124

alt_interface, attribute._dbus_signature)

1125

(types.FunctionType(

1126

nonmethod_func.func_code,

1127

nonmethod_func.func_globals,

1128

nonmethod_func.func_name,

1129

nonmethod_func.func_defaults,

1130

nonmethod_func.func_closure)))

1604

alt_interface,

1605

attribute._dbus_signature)(new_function))

1131

1606

# Copy annotations, if any

1132

1607

try:

1133

1608

new_function._dbus_annotations = dict(

1134

1609

attribute._dbus_annotations)

1135

1610

except AttributeError:

1136

1611

pass

1612

1137

1613

# Define a creator of a function to call both the

1138

1614

# original and alternate functions, so both the

1139

1615

# original and alternate signals gets sent when

1142

1618

"""This function is a scope container to pass

1143

1619

func1 and func2 to the "call_both" function

1144

1620

outside of its arguments"""

1145

1621

1622

@functools.wraps(func2)

1146

1623

def call_both(*args, **kwargs):

1147

1624

"""This function will emit two D-Bus

1148

1625

signals by calling func1 and func2"""

1149

1626

func1(*args, **kwargs)

1150

1627

func2(*args, **kwargs)

1151

1628

# Make wrapper function look like a D-Bus

1629

# signal

1630

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

1631

if name.startswith("_dbus_"):

1632

setattr(call_both, name, attr)

1633

1152

1634

return call_both

1153

1635

# Create the "call_both" function and add it to

1154

1636

# the class

1164

1646

alt_interface,

1165

1647

attribute._dbus_in_signature,

1166

1648

attribute._dbus_out_signature)

1167

(types.FunctionType(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

attribute.func_closure)))

1649

(copy_function(attribute)))

1172

1650

# Copy annotations, if any

1173

1651

try:

1174

1652

attr[attrname]._dbus_annotations = dict(

1186

1664

attribute._dbus_access,

1187

1665

attribute._dbus_get_args_options

1188

1666

["byte_arrays"])

1189

(types.FunctionType(

1190

attribute.func_code,

1191

attribute.func_globals,

1192

attribute.func_name,

1193

attribute.func_defaults,

1194

attribute.func_closure)))

1667

(copy_function(attribute)))

1195

1668

# Copy annotations, if any

1196

1669

try:

1197

1670

attr[attrname]._dbus_annotations = dict(

1206

1679

# to the class.

1207

1680

attr[attrname] = (

1208

1681

dbus_interface_annotations(alt_interface)

1209

(types.FunctionType(attribute.func_code,

1210

attribute.func_globals,

1211

attribute.func_name,

1212

attribute.func_defaults,

1213

attribute.func_closure)))

1682

(copy_function(attribute)))

1214

1683

if deprecate:

1215

1684

# Deprecate all alternate interfaces

1216

iname="_AlternateDBusNames_interface_annotation{}"

1685

iname = "_AlternateDBusNames_interface_annotation{}"

1217

1686

for interface_name in interface_names:

1218

1687

1219

1688

@dbus_interface_annotations(interface_name)

1220

1689

def func(self):

1221

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

1222

"true" }

1690

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

1691

"true"}

1223

1692

# Find an unused name

1224

1693

for aname in (iname.format(i)

1225

1694

for i in itertools.count()):

1229

1698

if interface_names:

1230

1699

# Replace the class with a new subclass of it with

1231

1700

# methods, signals, etc. as created above.

1232

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

1233

(cls, ), attr)

1701

if sys.version_info.major == 2:

1702

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

1703

(cls, ), attr)

1704

else:

1705

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

1706

(cls, ), attr)

1234

1707

return cls

1235

1708

1236

1709

return wrapper

1237

1710

1238

1711

1240

1713

"se.bsnet.fukt.Mandos"})

1241

1714

class ClientDBus(Client, DBusObjectWithProperties):

1242

1715

"""A Client class using D-Bus

1243

1716

1244

1717

Attributes:

1245

1718

dbus_object_path: dbus.ObjectPath

1246

1719

bus: dbus.SystemBus()

1247

1720

"""

1248

1721

1249

1722

runtime_expansions = (Client.runtime_expansions

1250

1723

+ ("dbus_object_path", ))

1251

1724

1252

1725

_interface = "se.recompile.Mandos.Client"

1253

1726

1254

1727

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

1255

1256

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

1728

1729

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

1257

1730

self.bus = bus

1258

1731

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

1259

1732

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

1265

1738

"/clients/" + client_object_name)

1266

1739

DBusObjectWithProperties.__init__(self, self.bus,

1267

1740

self.dbus_object_path)

1268

1741

1269

1742

def notifychangeproperty(transform_func, dbus_name,

1270

1743

type_func=lambda x: x,

1271

1744

variant_level=1,

1273

1746

_interface=_interface):

1274

1747

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

1275

1748

its changes to DBus.

1276

1749

1277

1750

transform_fun: Function that takes a value and a variant_level

1278

1751

and transforms it to a D-Bus type.

1279

1752

dbus_name: D-Bus name of the variable

1282

1755

variant_level: D-Bus variant level. Default: 1

1283

1756

"""

1284

1757

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

1285

1758

1286

1759

def setter(self, value):

1287

1760

if hasattr(self, "dbus_object_path"):

1288

1761

if (not hasattr(self, attrname) or

1295

1768

else:

1296

1769

dbus_value = transform_func(

1297

1770

type_func(value),

1298

variant_level = variant_level)

1771

variant_level=variant_level)

1299

1772

self.PropertyChanged(dbus.String(dbus_name),

1300

1773

dbus_value)

1301

1774

self.PropertiesChanged(

1302

1775

_interface,

1303

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

1304

dbus_value }),

1776

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

1777

dbus_value}),

1305

1778

dbus.Array())

1306

1779

setattr(self, attrname, value)

1307

1780

1308

1781

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

1309

1782

1310

1783

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1311

1784

approvals_pending = notifychangeproperty(dbus.Boolean,

1312

1785

"ApprovalPending",

1313

type_func = bool)

1786

type_func=bool)

1314

1787

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

1315

1788

last_enabled = notifychangeproperty(datetime_to_dbus,

1316

1789

"LastEnabled")

1317

1790

checker = notifychangeproperty(

1318

1791

dbus.Boolean, "CheckerRunning",

1319

type_func = lambda checker: checker is not None)

1792

type_func=lambda checker: checker is not None)

1320

1793

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1321

1794

"LastCheckedOK")

1322

1795

last_checker_status = notifychangeproperty(dbus.Int16,

1327

1800

"ApprovedByDefault")

1328

1801

approval_delay = notifychangeproperty(

1329

1802

dbus.UInt64, "ApprovalDelay",

1330

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

1803

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

1331

1804

approval_duration = notifychangeproperty(

1332

1805

dbus.UInt64, "ApprovalDuration",

1333

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

1806

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

1334

1807

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

1335

1808

timeout = notifychangeproperty(

1336

1809

dbus.UInt64, "Timeout",

1337

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

1810

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

1338

1811

extended_timeout = notifychangeproperty(

1339

1812

dbus.UInt64, "ExtendedTimeout",

1340

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

1813

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

1341

1814

interval = notifychangeproperty(

1342

1815

dbus.UInt64, "Interval",

1343

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

1816

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

1344

1817

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

1345

1818

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

1346

1819

invalidate_only=True)

1347

1820

1348

1821

del notifychangeproperty

1349

1822

1350

1823

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

1351

1824

try:

1352

1825

self.remove_from_connection()

1355

1828

if hasattr(DBusObjectWithProperties, "__del__"):

1356

1829

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

1357

1830

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

1358

1359

def checker_callback(self, pid, condition, command,

1360

*args, **kwargs):

1361

self.checker_callback_tag = None

1362

self.checker = None

1363

if os.WIFEXITED(condition):

1364

exitstatus = os.WEXITSTATUS(condition)

1831

1832

def checker_callback(self, source, condition,

1833

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

1834

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

1835

connection, command, *args,

1836

**kwargs)

1837

exitstatus = self.last_checker_status

1838

if exitstatus >= 0:

1365

1839

# Emit D-Bus signal

1366

1840

self.CheckerCompleted(dbus.Int16(exitstatus),

1367

dbus.Int64(condition),

1841

# This is specific to GNU libC

1842

dbus.Int64(exitstatus << 8),

1368

1843

dbus.String(command))

1369

1844

else:

1370

1845

# Emit D-Bus signal

1371

1846

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

1372

dbus.Int64(condition),

1847

dbus.Int64(

1848

# This is specific to GNU libC

1849

(exitstatus << 8)

1850

| self.last_checker_signal),

1373

1851

dbus.String(command))

1374

1375

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

1376

*args, **kwargs)

1377

1852

return ret

1853

1378

1854

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

1379

1855

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

1380

1856

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

1384

1860

# Emit D-Bus signal

1385

1861

self.CheckerStarted(self.current_checker_command)

1386

1862

return r

1387

1863

1388

1864

def _reset_approved(self):

1389

1865

self.approved = None

1390

1866

return False

1391

1867

1392

1868

def approve(self, value=True):

1393

1869

self.approved = value

1394

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

1395

* 1000), self._reset_approved)

1870

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

1871

* 1000), self._reset_approved)

1396

1872

self.send_changedstate()

1397

1398

## D-Bus methods, signals & properties

1399

1400

## Interfaces

1401

1402

## Signals

1403

1873

1874

# D-Bus methods, signals & properties

1875

1876

# Interfaces

1877

1878

# Signals

1879

1404

1880

# CheckerCompleted - signal

1405

1881

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

1406

1882

def CheckerCompleted(self, exitcode, waitstatus, command):

1407

1883

"D-Bus signal"

1408

1884

pass

1409

1885

1410

1886

# CheckerStarted - signal

1411

1887

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

1412

1888

def CheckerStarted(self, command):

1413

1889

"D-Bus signal"

1414

1890

pass

1415

1891

1416

1892

# PropertyChanged - signal

1417

1893

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

1418

1894

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

1419

1895

def PropertyChanged(self, property, value):

1420

1896

"D-Bus signal"

1421

1897

pass

1422

1898

1423

1899

# GotSecret - signal

1424

1900

@dbus.service.signal(_interface)

1425

1901

def GotSecret(self):

1428

1904

server to mandos-client

1429

1905

"""

1430

1906

pass

1431

1907

1432

1908

# Rejected - signal

1433

1909

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

1434

1910

def Rejected(self, reason):

1435

1911

"D-Bus signal"

1436

1912

pass

1437

1913

1438

1914

# NeedApproval - signal

1439

1915

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

1440

1916

def NeedApproval(self, timeout, default):

1441

1917

"D-Bus signal"

1442

1918

return self.need_approval()

1443

1444

## Methods

1445

1919

1920

# Methods

1921

1446

1922

# Approve - method

1447

1923

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

1448

1924

def Approve(self, value):

1449

1925

self.approve(value)

1450

1926

1451

1927

# CheckedOK - method

1452

1928

@dbus.service.method(_interface)

1453

1929

def CheckedOK(self):

1454

1930

self.checked_ok()

1455

1931

1456

1932

# Enable - method

1933

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

1457

1934

@dbus.service.method(_interface)

1458

1935

def Enable(self):

1459

1936

"D-Bus method"

1460

1937

self.enable()

1461

1938

1462

1939

# StartChecker - method

1940

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

1463

1941

@dbus.service.method(_interface)

1464

1942

def StartChecker(self):

1465

1943

"D-Bus method"

1466

1944

self.start_checker()

1467

1945

1468

1946

# Disable - method

1947

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

1469

1948

@dbus.service.method(_interface)

1470

1949

def Disable(self):

1471

1950

"D-Bus method"

1472

1951

self.disable()

1473

1952

1474

1953

# StopChecker - method

1954

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

1475

1955

@dbus.service.method(_interface)

1476

1956

def StopChecker(self):

1477

1957

self.stop_checker()

1478

1479

## Properties

1480

1958

1959

# Properties

1960

1481

1961

# ApprovalPending - property

1482

1962

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

1483

1963

def ApprovalPending_dbus_property(self):

1484

1964

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

1485

1965

1486

1966

# ApprovedByDefault - property

1487

1967

@dbus_service_property(_interface,

1488

1968

signature="b",

1491

1971

if value is None: # get

1492

1972

return dbus.Boolean(self.approved_by_default)

1493

1973

self.approved_by_default = bool(value)

1494

1974

1495

1975

# ApprovalDelay - property

1496

1976

@dbus_service_property(_interface,

1497

1977

signature="t",

1501

1981

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

1502

1982

* 1000)

1503

1983

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

1504

1984

1505

1985

# ApprovalDuration - property

1506

1986

@dbus_service_property(_interface,

1507

1987

signature="t",

1511

1991

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

1512

1992

* 1000)

1513

1993

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

1514

1994

1515

1995

# Name - property

1996

@dbus_annotations(

1997

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

1516

1998

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

1517

1999

def Name_dbus_property(self):

1518

2000

return dbus.String(self.name)

1519

2001

1520

2002

# Fingerprint - property

2003

@dbus_annotations(

2004

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

1521

2005

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

1522

2006

def Fingerprint_dbus_property(self):

1523

2007

return dbus.String(self.fingerprint)

1524

2008

1525

2009

# Host - property

1526

2010

@dbus_service_property(_interface,

1527

2011

signature="s",

1530

2014

if value is None: # get

1531

2015

return dbus.String(self.host)

1532

2016

self.host = str(value)

1533

2017

1534

2018

# Created - property

2019

@dbus_annotations(

2020

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

1535

2021

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

1536

2022

def Created_dbus_property(self):

1537

2023

return datetime_to_dbus(self.created)

1538

2024

1539

2025

# LastEnabled - property

1540

2026

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

1541

2027

def LastEnabled_dbus_property(self):

1542

2028

return datetime_to_dbus(self.last_enabled)

1543

2029

1544

2030

# Enabled - property

1545

2031

@dbus_service_property(_interface,

1546

2032

signature="b",

1552

2038

self.enable()

1553

2039

else:

1554

2040

self.disable()

1555

2041

1556

2042

# LastCheckedOK - property

1557

2043

@dbus_service_property(_interface,

1558

2044

signature="s",

1562

2048

self.checked_ok()

1563

2049

return

1564

2050

return datetime_to_dbus(self.last_checked_ok)

1565

2051

1566

2052

# LastCheckerStatus - property

1567

2053

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

1568

2054

def LastCheckerStatus_dbus_property(self):

1569

2055

return dbus.Int16(self.last_checker_status)

1570

2056

1571

2057

# Expires - property

1572

2058

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

1573

2059

def Expires_dbus_property(self):

1574

2060

return datetime_to_dbus(self.expires)

1575

2061

1576

2062

# LastApprovalRequest - property

1577

2063

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

1578

2064

def LastApprovalRequest_dbus_property(self):

1579

2065

return datetime_to_dbus(self.last_approval_request)

1580

2066

1581

2067

# Timeout - property

1582

2068

@dbus_service_property(_interface,

1583

2069

signature="t",

1598

2084

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

1599

2085

is None):

1600

2086

return

1601

gobject.source_remove(self.disable_initiator_tag)

1602

self.disable_initiator_tag = gobject.timeout_add(

2087

GLib.source_remove(self.disable_initiator_tag)

2088

self.disable_initiator_tag = GLib.timeout_add(

1603

2089

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

1604

2090

self.disable)

1605

2091

1606

2092

# ExtendedTimeout - property

1607

2093

@dbus_service_property(_interface,

1608

2094

signature="t",

1612

2098

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

1613

2099

* 1000)

1614

2100

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

1615

2101

1616

2102

# Interval - property

1617

2103

@dbus_service_property(_interface,

1618

2104

signature="t",

1625

2111

return

1626

2112

if self.enabled:

1627

2113

# Reschedule checker run

1628

gobject.source_remove(self.checker_initiator_tag)

1629

self.checker_initiator_tag = gobject.timeout_add(

2114

GLib.source_remove(self.checker_initiator_tag)

2115

self.checker_initiator_tag = GLib.timeout_add(

1630

2116

value, self.start_checker)

1631

self.start_checker() # Start one now, too

1632

2117

self.start_checker() # Start one now, too

2118

1633

2119

# Checker - property

1634

2120

@dbus_service_property(_interface,

1635

2121

signature="s",

1638

2124

if value is None: # get

1639

2125

return dbus.String(self.checker_command)

1640

2126

self.checker_command = str(value)

1641

2127

1642

2128

# CheckerRunning - property

1643

2129

@dbus_service_property(_interface,

1644

2130

signature="b",

1650

2136

self.start_checker()

1651

2137

else:

1652

2138

self.stop_checker()

1653

2139

1654

2140

# ObjectPath - property

2141

@dbus_annotations(

2142

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

2143

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

1655

2144

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

1656

2145

def ObjectPath_dbus_property(self):

1657

return self.dbus_object_path # is already a dbus.ObjectPath

1658

2146

return self.dbus_object_path # is already a dbus.ObjectPath

2147

1659

2148

# Secret = property

2149

@dbus_annotations(

2150

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

2151

"invalidates"})

1660

2152

@dbus_service_property(_interface,

1661

2153

signature="ay",

1662

2154

access="write",

1663

2155

byte_arrays=True)

1664

2156

def Secret_dbus_property(self, value):

1665

2157

self.secret = bytes(value)

1666

2158

1667

2159

del _interface

1668

2160

1669

2161

1673

2165

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

1674

2166

if not self._pipe.recv():

1675

2167

raise KeyError(fpr)

1676

2168

1677

2169

def __getattribute__(self, name):

1678

2170

if name == '_pipe':

1679

2171

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

1682

2174

if data[0] == 'data':

1683

2175

return data[1]

1684

2176

if data[0] == 'function':

1685

2177

1686

2178

def func(*args, **kwargs):

1687

2179

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

1688

2180

return self._pipe.recv()[1]

1689

2181

1690

2182

return func

1691

2183

1692

2184

def __setattr__(self, name, value):

1693

2185

if name == '_pipe':

1694

2186

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

1697

2189

1698

2190

class ClientHandler(socketserver.BaseRequestHandler, object):

1699

2191

"""A class to handle client connections.

1700

2192

1701

2193

Instantiated once for each connection to handle it.

1702

2194

Note: This will run in its own forked process."""

1703

2195

1704

2196

def handle(self):

1705

2197

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

1706

2198

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

1707

2199

str(self.client_address))

1708

2200

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

1709

2201

self.server.child_pipe.fileno())

1710

1711

session = gnutls.connection.ClientSession(

1712

self.request, gnutls.connection .X509Credentials())

1713

1714

# Note: gnutls.connection.X509Credentials is really a

1715

# generic GnuTLS certificate credentials object so long as

1716

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

1717

# here despite using OpenPGP certificates.

1718

1719

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

1720

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

1721

# "+COMP-NULL", "+CTYPE-OPENPGP",

1722

# "+DHE-DSS"))

2202

2203

session = gnutls.ClientSession(self.request)

2204

2205

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

2206

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

2207

# "+COMP-NULL", "+CTYPE-OPENPGP",

2208

# "+DHE-DSS"))

1723

2209

# Use a fallback default, since this MUST be set.

1724

2210

priority = self.server.gnutls_priority

1725

2211

if priority is None:

1726

2212

priority = "NORMAL"

1727

gnutls.library.functions.gnutls_priority_set_direct(

1728

session._c_object, priority, None)

1729

2213

gnutls.priority_set_direct(session._c_object,

2214

priority.encode("utf-8"),

2215

None)

2216

1730

2217

# Start communication using the Mandos protocol

1731

2218

# Get protocol number

1732

2219

line = self.request.makefile().readline()

1737

2224

except (ValueError, IndexError, RuntimeError) as error:

1738

2225

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

1739

2226

return

1740

2227

1741

2228

# Start GnuTLS connection

1742

2229

try:

1743

2230

session.handshake()

1744

except gnutls.errors.GNUTLSError as error:

2231

except gnutls.Error as error:

1745

2232

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

1746

2233

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

1747

2234

# established. Just abandon the request.

1748

2235

return

1749

2236

logger.debug("Handshake succeeded")

1750

2237

1751

2238

approval_required = False

1752

2239

try:

1753

2240

try:

1754

2241

fpr = self.fingerprint(

1755

2242

self.peer_certificate(session))

1756

except (TypeError,

1757

gnutls.errors.GNUTLSError) as error:

2243

except (TypeError, gnutls.Error) as error:

1758

2244

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

1759

2245

return

1760

2246

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

1761

2247

1762

2248

try:

1763

2249

client = ProxyClient(child_pipe, fpr,

1764

2250

self.client_address)

1765

2251

except KeyError:

1766

2252

return

1767

2253

1768

2254

if client.approval_delay:

1769

2255

delay = client.approval_delay

1770

2256

client.approvals_pending += 1

1771

2257

approval_required = True

1772

2258

1773

2259

while True:

1774

2260

if not client.enabled:

1775

2261

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

1778

2264

# Emit D-Bus signal

1779

2265

client.Rejected("Disabled")

1780

2266

return

1781

2267

1782

2268

if client.approved or not client.approval_delay:

1783

#We are approved or approval is disabled

2269

# We are approved or approval is disabled

1784

2270

break

1785

2271

elif client.approved is None:

1786

2272

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

1797

2283

# Emit D-Bus signal

1798

2284

client.Rejected("Denied")

1799

2285

return

1800

1801

#wait until timeout or approved

2286

2287

# wait until timeout or approved

1802

2288

time = datetime.datetime.now()

1803

2289

client.changedstate.acquire()

1804

2290

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

1817

2303

break

1818

2304

else:

1819

2305

delay -= time2 - time

1820

1821

sent_size = 0

1822

while sent_size < len(client.secret):

1823

try:

1824

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

1825

except gnutls.errors.GNUTLSError as error:

1826

logger.warning("gnutls send failed",

1827

exc_info=error)

1828

return

1829

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

1830

len(client.secret) - (sent_size

1831

+ sent))

1832

sent_size += sent

1833

2306

2307

try:

2308

session.send(client.secret)

2309

except gnutls.Error as error:

2310

logger.warning("gnutls send failed",

2311

exc_info=error)

2312

return

2313

1834

2314

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

1835

2315

# bump the timeout using extended_timeout

1836

2316

client.bump_timeout(client.extended_timeout)

1837

2317

if self.server.use_dbus:

1838

2318

# Emit D-Bus signal

1839

2319

client.GotSecret()

1840

2320

1841

2321

finally:

1842

2322

if approval_required:

1843

2323

client.approvals_pending -= 1

1844

2324

try:

1845

2325

session.bye()

1846

except gnutls.errors.GNUTLSError as error:

2326

except gnutls.Error as error:

1847

2327

logger.warning("GnuTLS bye failed",

1848

2328

exc_info=error)

1849

2329

1850

2330

@staticmethod

1851

2331

def peer_certificate(session):

1852

2332

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

1853

2333

# If not an OpenPGP certificate...

1854

if (gnutls.library.functions.gnutls_certificate_type_get(

1855

session._c_object)

1856

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1857

# ...do the normal thing

1858

return session.peer_certificate

2334

if (gnutls.certificate_type_get(session._c_object)

2335

!= gnutls.CRT_OPENPGP):

2336

# ...return invalid data

2337

return b""

1859

2338

list_size = ctypes.c_uint(1)

1860

cert_list = (gnutls.library.functions

1861

.gnutls_certificate_get_peers

2339

cert_list = (gnutls.certificate_get_peers

1862

2340

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

1863

2341

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

1864

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

1865

" certificate")

2342

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

1866

2343

if list_size.value == 0:

1867

2344

return None

1868

2345

cert = cert_list[0]

1869

2346

return ctypes.string_at(cert.data, cert.size)

1870

2347

1871

2348

@staticmethod

1872

2349

def fingerprint(openpgp):

1873

2350

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1874

2351

# New GnuTLS "datum" with the OpenPGP public key

1875

datum = gnutls.library.types.gnutls_datum_t(

2352

datum = gnutls.datum_t(

1876

2353

ctypes.cast(ctypes.c_char_p(openpgp),

1877

2354

ctypes.POINTER(ctypes.c_ubyte)),

1878

2355

ctypes.c_uint(len(openpgp)))

1879

2356

# New empty GnuTLS certificate

1880

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1881

gnutls.library.functions.gnutls_openpgp_crt_init(

1882

ctypes.byref(crt))

2357

crt = gnutls.openpgp_crt_t()

2358

gnutls.openpgp_crt_init(ctypes.byref(crt))

1883

2359

# Import the OpenPGP public key into the certificate

1884

gnutls.library.functions.gnutls_openpgp_crt_import(

1885

crt, ctypes.byref(datum),

1886

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

2360

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

2361

gnutls.OPENPGP_FMT_RAW)

1887

2362

# Verify the self signature in the key

1888

2363

crtverify = ctypes.c_uint()

1889

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1890

crt, 0, ctypes.byref(crtverify))

2364

gnutls.openpgp_crt_verify_self(crt, 0,

2365

ctypes.byref(crtverify))

1891

2366

if crtverify.value != 0:

1892

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1893

raise gnutls.errors.CertificateSecurityError(

1894

"Verify failed")

2367

gnutls.openpgp_crt_deinit(crt)

2368

raise gnutls.CertificateSecurityError("Verify failed")

1895

2369

# New buffer for the fingerprint

1896

2370

buf = ctypes.create_string_buffer(20)

1897

2371

buf_len = ctypes.c_size_t()

1898

2372

# Get the fingerprint from the certificate into the buffer

1899

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1900

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

2373

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

2374

ctypes.byref(buf_len))

1901

2375

# Deinit the certificate

1902

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2376

gnutls.openpgp_crt_deinit(crt)

1903

2377

# Convert the buffer to a Python bytestring

1904

2378

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

1905

2379

# Convert the bytestring to hexadecimal notation

1909

2383

1910

2384

class MultiprocessingMixIn(object):

1911

2385

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

1912

2386

1913

2387

def sub_process_main(self, request, address):

1914

2388

try:

1915

2389

self.finish_request(request, address)

1916

2390

except Exception:

1917

2391

self.handle_error(request, address)

1918

2392

self.close_request(request)

1919

2393

1920

2394

def process_request(self, request, address):

1921

2395

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

1922

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

1923

args = (request, address))

2396

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

2397

args=(request, address))

1924

2398

proc.start()

1925

2399

return proc

1926

2400

1927

2401

1928

2402

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1929

2403

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

1930

2404

1931

2405

def process_request(self, request, client_address):

1932

2406

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

1933

2407

1934

2408

This function creates a new pipe in self.pipe

1935

2409

"""

1936

2410

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1937

2411

1938

2412

proc = MultiprocessingMixIn.process_request(self, request,

1939

2413

client_address)

1940

2414

self.child_pipe.close()

1941

2415

self.add_pipe(parent_pipe, proc)

1942

2416

1943

2417

def add_pipe(self, parent_pipe, proc):

1944

2418

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

1945

2419

raise NotImplementedError()

1948

2422

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1949

2423

socketserver.TCPServer, object):

1950

2424

"""IPv6-capable TCP server. Accepts 'None' as address and/or port

1951

2425

1952

2426

Attributes:

1953

2427

enabled: Boolean; whether this server is activated yet

1954

2428

interface: None or a network interface name (string)

1955

2429

use_ipv6: Boolean; to use IPv6 or not

1956

2430

"""

1957

2431

1958

2432

def __init__(self, server_address, RequestHandlerClass,

1959

2433

interface=None,

1960

2434

use_ipv6=True,

1970

2444

self.socketfd = socketfd

1971

2445

# Save the original socket.socket() function

1972

2446

self.socket_socket = socket.socket

2447

1973

2448

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

1974

#

2449

#

1975

2450

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

1976

2451

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

1977

2452

# patching socket.socket.)

1978

#

2453

#

1979

2454

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

1980

2455

@functools.wraps(socket.socket)

1981

2456

def socket_wrapper(*args, **kwargs):

1993

2468

# socket_wrapper(), if socketfd was set.

1994

2469

socketserver.TCPServer.__init__(self, server_address,

1995

2470

RequestHandlerClass)

1996

2471

1997

2472

def server_bind(self):

1998

2473

"""This overrides the normal server_bind() function

1999

2474

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

2000

2475

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

2476

global SO_BINDTODEVICE

2001

2477

if self.interface is not None:

2002

2478

if SO_BINDTODEVICE is None:

2003

logger.error("SO_BINDTODEVICE does not exist;"

2004

" cannot bind to interface %s",

2005

self.interface)

2006

else:

2007

try:

2008

self.socket.setsockopt(

2009

socket.SOL_SOCKET, SO_BINDTODEVICE,

2010

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

2011

except socket.error as error:

2012

if error.errno == errno.EPERM:

2013

logger.error("No permission to bind to"

2014

" interface %s", self.interface)

2015

elif error.errno == errno.ENOPROTOOPT:

2016

logger.error("SO_BINDTODEVICE not available;"

2017

" cannot bind to interface %s",

2018

self.interface)

2019

elif error.errno == errno.ENODEV:

2020

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

2021

" cannot bind", self.interface)

2022

else:

2023

raise

2479

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

2480

# common enough.

2481

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

2482

SO_BINDTODEVICE = 25

2483

try:

2484

self.socket.setsockopt(

2485

socket.SOL_SOCKET, SO_BINDTODEVICE,

2486

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

2487

except socket.error as error:

2488

if error.errno == errno.EPERM:

2489

logger.error("No permission to bind to"

2490

" interface %s", self.interface)

2491

elif error.errno == errno.ENOPROTOOPT:

2492

logger.error("SO_BINDTODEVICE not available;"

2493

" cannot bind to interface %s",

2494

self.interface)

2495

elif error.errno == errno.ENODEV:

2496

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

2497

" cannot bind", self.interface)

2498

else:

2499

raise

2024

2500

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

2025

2501

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

2026

2502

if not self.server_address[0]:

2027

2503

if self.address_family == socket.AF_INET6:

2028

any_address = "::" # in6addr_any

2504

any_address = "::" # in6addr_any

2029

2505

else:

2030

any_address = "0.0.0.0" # INADDR_ANY

2506

any_address = "0.0.0.0" # INADDR_ANY

2031

2507

self.server_address = (any_address,

2032

2508

self.server_address[1])

2033

2509

elif not self.server_address[1]:

2043

2519

2044

2520

class MandosServer(IPv6_TCPServer):

2045

2521

"""Mandos server.

2046

2522

2047

2523

Attributes:

2048

2524

clients: set of Client objects

2049

2525

gnutls_priority GnuTLS priority string

2050

2526

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

2051

2052

Assumes a gobject.MainLoop event loop.

2527

2528

Assumes a GLib.MainLoop event loop.

2053

2529

"""

2054

2530

2055

2531

def __init__(self, server_address, RequestHandlerClass,

2056

2532

interface=None,

2057

2533

use_ipv6=True,

2067

2543

self.gnutls_priority = gnutls_priority

2068

2544

IPv6_TCPServer.__init__(self, server_address,

2069

2545

RequestHandlerClass,

2070

interface = interface,

2071

use_ipv6 = use_ipv6,

2072

socketfd = socketfd)

2073

2546

interface=interface,

2547

use_ipv6=use_ipv6,

2548

socketfd=socketfd)

2549

2074

2550

def server_activate(self):

2075

2551

if self.enabled:

2076

2552

return socketserver.TCPServer.server_activate(self)

2077

2553

2078

2554

def enable(self):

2079

2555

self.enabled = True

2080

2556

2081

2557

def add_pipe(self, parent_pipe, proc):

2082

2558

# Call "handle_ipc" for both data and EOF events

2083

gobject.io_add_watch(

2559

GLib.io_add_watch(

2084

2560

parent_pipe.fileno(),

2085

gobject.IO_IN | gobject.IO_HUP,

2561

GLib.IO_IN | GLib.IO_HUP,

2086

2562

functools.partial(self.handle_ipc,

2087

parent_pipe = parent_pipe,

2088

proc = proc))

2089

2563

parent_pipe=parent_pipe,

2564

proc=proc))

2565

2090

2566

def handle_ipc(self, source, condition,

2091

2567

parent_pipe=None,

2092

proc = None,

2568

proc=None,

2093

2569

client_object=None):

2094

2570

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

2095

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

2571

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

2096

2572

# Wait for other process to exit

2097

2573

proc.join()

2098

2574

return False

2099

2575

2100

2576

# Read a request from the child

2101

2577

request = parent_pipe.recv()

2102

2578

command = request[0]

2103

2579

2104

2580

if command == 'init':

2105

2581

fpr = request[1]

2106

2582

address = request[2]

2107

2108

for c in self.clients.itervalues():

2583

2584

for c in self.clients.values():

2109

2585

if c.fingerprint == fpr:

2110

2586

client = c

2111

2587

break

2118

2594

address[0])

2119

2595

parent_pipe.send(False)

2120

2596

return False

2121

2122

gobject.io_add_watch(

2597

2598

GLib.io_add_watch(

2123

2599

parent_pipe.fileno(),

2124

gobject.IO_IN | gobject.IO_HUP,

2600

GLib.IO_IN | GLib.IO_HUP,

2125

2601

functools.partial(self.handle_ipc,

2126

parent_pipe = parent_pipe,

2127

proc = proc,

2128

client_object = client))

2602

parent_pipe=parent_pipe,

2603

proc=proc,

2604

client_object=client))

2129

2605

parent_pipe.send(True)

2130

2606

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

2131

2607

# same fileno

2134

2610

funcname = request[1]

2135

2611

args = request[2]

2136

2612

kwargs = request[3]

2137

2613

2138

2614

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

2139

2615

funcname)(*args,

2140

2616

**kwargs)))

2141

2617

2142

2618

if command == 'getattr':

2143

2619

attrname = request[1]

2144

if callable(client_object.__getattribute__(attrname)):

2620

if isinstance(client_object.__getattribute__(attrname),

2621

collections.Callable):

2145

2622

parent_pipe.send(('function', ))

2146

2623

else:

2147

2624

parent_pipe.send((

2148

2625

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

2149

2626

2150

2627

if command == 'setattr':

2151

2628

attrname = request[1]

2152

2629

value = request[2]

2153

2630

setattr(client_object, attrname, value)

2154

2631

2155

2632

return True

2156

2633

2157

2634

2158

2635

def rfc3339_duration_to_delta(duration):

2159

2636

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

2160

2637

2161

2638

>>> rfc3339_duration_to_delta("P7D")

2162

2639

datetime.timedelta(7)

2163

2640

>>> rfc3339_duration_to_delta("PT60S")

2173

2650

>>> rfc3339_duration_to_delta("P1DT3M20S")

2174

2651

datetime.timedelta(1, 200)

2175

2652

"""

2176

2653

2177

2654

# Parsing an RFC 3339 duration with regular expressions is not

2178

2655

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

2179

2656

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

2180

2657

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

2181

2658

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

2182

2659

# avoid excessive use of external libraries.

2183

2660

2184

2661

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

2185

2662

Token = collections.namedtuple("Token", (

2186

2663

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

2219

2696

frozenset((token_year, token_month,

2220

2697

token_day, token_time,

2221

2698

token_week)))

2222

# Define starting values

2223

value = datetime.timedelta() # Value so far

2699

# Define starting values:

2700

# Value so far

2701

value = datetime.timedelta()

2224

2702

found_token = None

2225

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

2226

s = duration # String left to parse

2703

# Following valid tokens

2704

followers = frozenset((token_duration, ))

2705

# String left to parse

2706

s = duration

2227

2707

# Loop until end token is found

2228

2708

while found_token is not token_end:

2229

2709

# Search for any currently valid tokens

2253

2733

2254

2734

def string_to_delta(interval):

2255

2735

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

2256

2736

2257

2737

>>> string_to_delta('7d')

2258

2738

datetime.timedelta(7)

2259

2739

>>> string_to_delta('60s')

2267

2747

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

2268

2748

datetime.timedelta(0, 330)

2269

2749

"""

2270

2750

2271

2751

try:

2272

2752

return rfc3339_duration_to_delta(interval)

2273

2753

except ValueError:

2274

2754

pass

2275

2755

2276

2756

timevalue = datetime.timedelta(0)

2277

2757

for s in interval.split():

2278

2758

try:

2296

2776

return timevalue

2297

2777

2298

2778

2299

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

2779

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

2300

2780

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

2301

2781

2302

2782

This should really exist as os.daemon, but it doesn't (yet)."""

2303

2783

if os.fork():

2304

2784

sys.exit()

2322

2802

2323

2803

2324

2804

def main():

2325

2805

2326

2806

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

2327

2807

# Parsing of options, both command line and config file

2328

2808

2329

2809

parser = argparse.ArgumentParser()

2330

2810

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

2331

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

2811

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

2332

2812

help="show version number and exit")

2333

2813

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

2334

2814

help="Bind to interface IF")

2370

2850

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

2371

2851

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

2372

2852

default=None)

2373

2853

2374

2854

options = parser.parse_args()

2375

2855

2376

2856

if options.check:

2377

2857

import doctest

2378

2858

fail_count, test_count = doctest.testmod()

2379

2859

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

2380

2860

2381

2861

# Default values for config file for server-global settings

2382

server_defaults = { "interface": "",

2383

"address": "",

2384

"port": "",

2385

"debug": "False",

2386

"priority":

2387

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

2388

":+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2389

"servicename": "Mandos",

2390

"use_dbus": "True",

2391

"use_ipv6": "True",

2392

"debuglevel": "",

2393

"restore": "True",

2394

"socket": "",

2395

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

2396

"foreground": "False",

2397

"zeroconf": "True",

2398

}

2399

2862

server_defaults = {"interface": "",

2863

"address": "",

2864

"port": "",

2865

"debug": "False",

2866

"priority":

2867

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

2868

":+SIGN-DSA-SHA256",

2869

"servicename": "Mandos",

2870

"use_dbus": "True",

2871

"use_ipv6": "True",

2872

"debuglevel": "",

2873

"restore": "True",

2874

"socket": "",

2875

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

2876

"foreground": "False",

2877

"zeroconf": "True",

2878

}

2879

2400

2880

# Parse config file for server-global settings

2401

2881

server_config = configparser.SafeConfigParser(server_defaults)

2402

2882

del server_defaults

2404

2884

# Convert the SafeConfigParser object to a dict

2405

2885

server_settings = server_config.defaults()

2406

2886

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

2407

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

2887

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

2888

"foreground", "zeroconf"):

2408

2889

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

2409

2890

option)

2410

2891

if server_settings["port"]:

2420

2901

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

2421

2902

["socket"])

2422

2903

del server_config

2423

2904

2424

2905

# Override the settings from the config file with command line

2425

2906

# options, if set.

2426

2907

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

2444

2925

if server_settings["debug"]:

2445

2926

server_settings["foreground"] = True

2446

2927

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

2447

2928

2448

2929

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

2449

2930

2450

2931

if (not server_settings["zeroconf"]

2451

2932

and not (server_settings["port"]

2452

2933

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

2453

2934

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

2454

2935

2455

2936

# For convenience

2456

2937

debug = server_settings["debug"]

2457

2938

debuglevel = server_settings["debuglevel"]

2461

2942

stored_state_file)

2462

2943

foreground = server_settings["foreground"]

2463

2944

zeroconf = server_settings["zeroconf"]

2464

2945

2465

2946

if debug:

2466

2947

initlogger(debug, logging.DEBUG)

2467

2948

else:

2470

2951

else:

2471

2952

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

2472

2953

initlogger(debug, level)

2473

2954

2474

2955

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

2475

2956

syslogger.setFormatter(

2476

2957

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

2477

2958

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

2478

2959

server_settings["servicename"])))

2479

2960

2480

2961

# Parse config file with clients

2481

2962

client_config = configparser.SafeConfigParser(Client

2482

2963

.client_defaults)

2483

2964

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

2484

2965

"clients.conf"))

2485

2966

2486

2967

global mandos_dbus_service

2487

2968

mandos_dbus_service = None

2488

2969

2489

2970

socketfd = None

2490

2971

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

2491

2972

socketfd = server_settings["socket"]

2507

2988

except IOError as e:

2508

2989

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

2509

2990

exc_info=e)

2510

2511

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

2991

2992

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

2993

("mandos", "mandos"),

2994

("nobody", "nogroup")):

2512

2995

try:

2513

2996

uid = pwd.getpwnam(name).pw_uid

2514

gid = pwd.getpwnam(name).pw_gid

2997

gid = pwd.getpwnam(group).pw_gid

2515

2998

break

2516

2999

except KeyError:

2517

3000

continue

2521

3004

try:

2522

3005

os.setgid(gid)

2523

3006

os.setuid(uid)

3007

if debug:

3008

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

3009

gid))

2524

3010

except OSError as error:

3011

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

3012

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

2525

3013

if error.errno != errno.EPERM:

2526

3014

raise

2527

3015

2528

3016

if debug:

2529

3017

# Enable all possible GnuTLS debugging

2530

3018

2531

3019

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

2532

3020

# - GnuTLS manual

2533

gnutls.library.functions.gnutls_global_set_log_level(11)

2534

2535

@gnutls.library.types.gnutls_log_func

3021

gnutls.global_set_log_level(11)

3022

3023

@gnutls.log_func

2536

3024

def debug_gnutls(level, string):

2537

3025

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

2538

2539

gnutls.library.functions.gnutls_global_set_log_function(

2540

debug_gnutls)

2541

3026

3027

gnutls.global_set_log_function(debug_gnutls)

3028

2542

3029

# Redirect stdin so all checkers get /dev/null

2543

3030

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

2544

3031

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

2545

3032

if null > 2:

2546

3033

os.close(null)

2547

3034

2548

3035

# Need to fork before connecting to D-Bus

2549

3036

if not foreground:

2550

3037

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

2551

3038

daemon()

2552

2553

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

2554

# need to inform gobject that threads will be used.

2555

gobject.threads_init()

2556

3039

3040

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

3041

# to inform GLib that threads will be used.

3042

GLib.threads_init()

3043

2557

3044

global main_loop

2558

3045

# From the Avahi example code

2559

3046

DBusGMainLoop(set_as_default=True)

2560

main_loop = gobject.MainLoop()

3047

main_loop = GLib.MainLoop()

2561

3048

bus = dbus.SystemBus()

2562

3049

# End of Avahi example code

2563

3050

if use_dbus:

2576

3063

if zeroconf:

2577

3064

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2578

3065

service = AvahiServiceToSyslog(

2579

name = server_settings["servicename"],

2580

servicetype = "_mandos._tcp",

2581

protocol = protocol,

2582

bus = bus)

3066

name=server_settings["servicename"],

3067

servicetype="_mandos._tcp",

3068

protocol=protocol,

3069

bus=bus)

2583

3070

if server_settings["interface"]:

2584

3071

service.interface = if_nametoindex(

2585

3072

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

2586

3073

2587

3074

global multiprocessing_manager

2588

3075

multiprocessing_manager = multiprocessing.Manager()

2589

3076

2590

3077

client_class = Client

2591

3078

if use_dbus:

2592

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

2593

3079

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

3080

2594

3081

client_settings = Client.config_parser(client_config)

2595

3082

old_client_settings = {}

2596

3083

clients_data = {}

2597

3084

2598

3085

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

2599

3086

global wnull

2600

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

3087

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

2601

3088

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

2602

3089

# mode

2603

3090

if debug or not foreground:

2604

3091

wnull.close()

2605

3092

2606

3093

# Get client data and settings from last running state.

2607

3094

if server_settings["restore"]:

2608

3095

try:

2609

3096

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

2610

clients_data, old_client_settings = pickle.load(

2611

stored_state)

3097

if sys.version_info.major == 2:

3098

clients_data, old_client_settings = pickle.load(

3099

stored_state)

3100

else:

3101

bytes_clients_data, bytes_old_client_settings = (

3102

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

3103

# Fix bytes to strings

3104

# clients_data

3105

# .keys()

3106

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

3107

if isinstance(key, bytes)

3108

else key): value

3109

for key, value in

3110

bytes_clients_data.items()}

3111

del bytes_clients_data

3112

for key in clients_data:

3113

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

3114

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

3115

for k, v in

3116

clients_data[key].items()}

3117

clients_data[key] = value

3118

# .client_structure

3119

value["client_structure"] = [

3120

(s.decode("utf-8")

3121

if isinstance(s, bytes)

3122

else s) for s in

3123

value["client_structure"]]

3124

# .name & .host

3125

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

3126

if isinstance(value[k], bytes):

3127

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

3128

# old_client_settings

3129

# .keys()

3130

old_client_settings = {

3131

(key.decode("utf-8")

3132

if isinstance(key, bytes)

3133

else key): value

3134

for key, value in

3135

bytes_old_client_settings.items()}

3136

del bytes_old_client_settings

3137

# .host

3138

for value in old_client_settings.values():

3139

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

3140

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

3141

.decode("utf-8"))

2612

3142

os.remove(stored_state_path)

2613

3143

except IOError as e:

2614

3144

if e.errno == errno.ENOENT:

2622

3152

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

2623

3153

"EOFError:",

2624

3154

exc_info=e)

2625

3155

2626

3156

with PGPEngine() as pgp:

2627

3157

for client_name, client in clients_data.items():

2628

3158

# Skip removed clients

2629

3159

if client_name not in client_settings:

2630

3160

continue

2631

3161

2632

3162

# Decide which value to use after restoring saved state.

2633

3163

# We have three different values: Old config file,

2634

3164

# new config file, and saved state.

2645

3175

client[name] = value

2646

3176

except KeyError:

2647

3177

pass

2648

3178

2649

3179

# Clients who has passed its expire date can still be

2650

# enabled if its last checker was successful. Clients

3180

# enabled if its last checker was successful. A Client

2651

3181

# whose checker succeeded before we stored its state is

2652

3182

# assumed to have successfully run all checkers during

2653

3183

# downtime.

2684

3214

client_name))

2685

3215

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

2686

3216

["secret"])

2687

3217

2688

3218

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

2689

3219

for client_name in (set(old_client_settings)

2690

3220

- set(client_settings)):

2692

3222

for client_name in (set(client_settings)

2693

3223

- set(old_client_settings)):

2694

3224

clients_data[client_name] = client_settings[client_name]

2695

3225

2696

3226

# Create all client objects

2697

3227

for client_name, client in clients_data.items():

2698

3228

tcp_server.clients[client_name] = client_class(

2699

name = client_name,

2700

settings = client,

2701

server_settings = server_settings)

2702

3229

name=client_name,

3230

settings=client,

3231

server_settings=server_settings)

3232

2703

3233

if not tcp_server.clients:

2704

3234

logger.warning("No clients defined")

2705

3235

2706

3236

if not foreground:

2707

3237

if pidfile is not None:

2708

3238

pid = os.getpid()

2714

3244

pidfilename, pid)

2715

3245

del pidfile

2716

3246

del pidfilename

2717

2718

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

2719

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

2720

3247

3248

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

3249

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3250

lambda: main_loop.quit() and False)

3251

2721

3252

if use_dbus:

2722

3253

2723

3254

@alternate_dbus_interfaces(

2724

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

2725

class MandosDBusService(DBusObjectWithProperties):

3255

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

3256

class MandosDBusService(DBusObjectWithObjectManager):

2726

3257

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

2727

3258

2728

3259

def __init__(self):

2729

3260

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

2730

3261

2731

3262

_interface = "se.recompile.Mandos"

2732

2733

@dbus_interface_annotations(_interface)

2734

def _foo(self):

2735

return {

2736

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

2737

"false" }

2738

3263

2739

3264

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

2740

3265

def ClientAdded(self, objpath):

2741

3266

"D-Bus signal"

2742

3267

pass

2743

3268

2744

3269

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

2745

3270

def ClientNotFound(self, fingerprint, address):

2746

3271

"D-Bus signal"

2747

3272

pass

2748

3273

3274

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

3275

"true"})

2749

3276

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

2750

3277

def ClientRemoved(self, objpath, name):

2751

3278

"D-Bus signal"

2752

3279

pass

2753

3280

3281

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

3282

"true"})

2754

3283

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

2755

3284

def GetAllClients(self):

2756

3285

"D-Bus method"

2757

3286

return dbus.Array(c.dbus_object_path for c in

2758

tcp_server.clients.itervalues())

2759

3287

tcp_server.clients.values())

3288

3289

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

3290

"true"})

2760

3291

@dbus.service.method(_interface,

2761

3292

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

2762

3293

def GetAllClientsWithProperties(self):

2763

3294

"D-Bus method"

2764

3295

return dbus.Dictionary(

2765

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

2766

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

3296

{c.dbus_object_path: c.GetAll(

3297

"se.recompile.Mandos.Client")

3298

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

2767

3299

signature="oa{sv}")

2768

3300

2769

3301

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

2770

3302

def RemoveClient(self, object_path):

2771

3303

"D-Bus method"

2772

for c in tcp_server.clients.itervalues():

3304

for c in tcp_server.clients.values():

2773

3305

if c.dbus_object_path == object_path:

2774

3306

del tcp_server.clients[c.name]

2775

3307

c.remove_from_connection()

2776

# Don't signal anything except ClientRemoved

3308

# Don't signal the disabling

2777

3309

c.disable(quiet=True)

2778

# Emit D-Bus signal

2779

self.ClientRemoved(object_path, c.name)

3310

# Emit D-Bus signal for removal

3311

self.client_removed_signal(c)

2780

3312

return

2781

3313

raise KeyError(object_path)

2782

3314

2783

3315

del _interface

2784

3316

3317

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3318

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

3319

def GetManagedObjects(self):

3320

"""D-Bus method"""

3321

return dbus.Dictionary(

3322

{client.dbus_object_path:

3323

dbus.Dictionary(

3324

{interface: client.GetAll(interface)

3325

for interface in

3326

client._get_all_interface_names()})

3327

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

3328

3329

def client_added_signal(self, client):

3330

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

3331

if use_dbus:

3332

# New standard signal

3333

self.InterfacesAdded(

3334

client.dbus_object_path,

3335

dbus.Dictionary(

3336

{interface: client.GetAll(interface)

3337

for interface in

3338

client._get_all_interface_names()}))

3339

# Old signal

3340

self.ClientAdded(client.dbus_object_path)

3341

3342

def client_removed_signal(self, client):

3343

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

3344

if use_dbus:

3345

# New standard signal

3346

self.InterfacesRemoved(

3347

client.dbus_object_path,

3348

client._get_all_interface_names())

3349

# Old signal

3350

self.ClientRemoved(client.dbus_object_path,

3351

client.name)

3352

2785

3353

mandos_dbus_service = MandosDBusService()

2786

3354

3355

# Save modules to variables to exempt the modules from being

3356

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

3357

mp = multiprocessing

3358

wn = wnull

3359

2787

3360

def cleanup():

2788

3361

"Cleanup function; run on exit"

2789

3362

if zeroconf:

2790

3363

service.cleanup()

2791

2792

multiprocessing.active_children()

2793

wnull.close()

3364

3365

mp.active_children()

3366

wn.close()

2794

3367

if not (tcp_server.clients or client_settings):

2795

3368

return

2796

3369

2797

3370

# Store client before exiting. Secrets are encrypted with key

2798

3371

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

2799

3372

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

2800

3373

clients = {}

2801

3374

with PGPEngine() as pgp:

2802

for client in tcp_server.clients.itervalues():

3375

for client in tcp_server.clients.values():

2803

3376

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

2804

3377

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

2805

3378

key)

2806

3379

client_dict = {}

2807

3380

2808

3381

# A list of attributes that can not be pickled

2809

3382

# + secret.

2810

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

2811

"checker", "server_settings" }

3383

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

3384

"checker", "server_settings"}

2812

3385

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

2813

3386

.Object):

2814

3387

exclude.add(name)

2815

3388

2816

3389

client_dict["encrypted_secret"] = (client

2817

3390

.encrypted_secret)

2818

3391

for attr in client.client_structure:

2819

3392

if attr not in exclude:

2820

3393

client_dict[attr] = getattr(client, attr)

2821

3394

2822

3395

clients[client.name] = client_dict

2823

3396

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

2824

3397

2825

3398

try:

2826

3399

with tempfile.NamedTemporaryFile(

2827

3400

mode='wb',

2829

3402

prefix='clients-',

2830

3403

dir=os.path.dirname(stored_state_path),

2831

3404

delete=False) as stored_state:

2832

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

3405

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

3406

protocol=2)

2833

3407

tempname = stored_state.name

2834

3408

os.rename(tempname, stored_state_path)

2835

3409

except (IOError, OSError) as e:

2845

3419

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

2846

3420

exc_info=e)

2847

3421

raise

2848

3422

2849

3423

# Delete all clients, and settings from config

2850

3424

while tcp_server.clients:

2851

3425

name, client = tcp_server.clients.popitem()

2852

3426

if use_dbus:

2853

3427

client.remove_from_connection()

2854

# Don't signal anything except ClientRemoved

3428

# Don't signal the disabling

2855

3429

client.disable(quiet=True)

3430

# Emit D-Bus signal for removal

2856

3431

if use_dbus:

2857

# Emit D-Bus signal

2858

mandos_dbus_service.ClientRemoved(

2859

client.dbus_object_path, client.name)

3432

mandos_dbus_service.client_removed_signal(client)

2860

3433

client_settings.clear()

2861

3434

2862

3435

atexit.register(cleanup)

2863

2864

for client in tcp_server.clients.itervalues():

3436

3437

for client in tcp_server.clients.values():

2865

3438

if use_dbus:

2866

# Emit D-Bus signal

2867

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3439

# Emit D-Bus signal for adding

3440

mandos_dbus_service.client_added_signal(client)

2868

3441

# Need to initiate checking of clients

2869

3442

if client.enabled:

2870

3443

client.init_checker()

2871

3444

2872

3445

tcp_server.enable()

2873

3446

tcp_server.server_activate()

2874

3447

2875

3448

# Find out what port we got

2876

3449

if zeroconf:

2877

3450

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

2882

3455

else: # IPv4

2883

3456

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

2884

3457

*tcp_server.socket.getsockname())

2885

2886

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

2887

3458

3459

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

3460

2888

3461

try:

2889

3462

if zeroconf:

2890

3463

# From the Avahi example code

2895

3468

cleanup()

2896

3469

sys.exit(1)

2897

3470

# End of Avahi example code

2898

2899

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

2900

lambda *args, **kwargs:

2901

(tcp_server.handle_request

2902

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

2903

3471

3472

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

3473

lambda *args, **kwargs:

3474

(tcp_server.handle_request

3475

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

3476

2904

3477

logger.debug("Starting main loop")

2905

3478

main_loop.run()

2906

3479

except AvahiError as error: