/mandos/release : revision 237.7.240

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

#

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

19

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

23

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

24

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

25

# GNU General Public License for more details.

26

#

26

#

27

# 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

#

31

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

32

#

32

#

33

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

try:

38

from future_builtins import *

39

except ImportError:

40

pass

37

from future_builtins import *

41

38

42

try:

43

import SocketServer as socketserver

44

except ImportError:

45

import socketserver

39

import SocketServer as socketserver

46

40

import socket

47

41

import argparse

48

42

import datetime

49

43

import errno

50

try:

51

import ConfigParser as configparser

52

except ImportError:

53

import configparser

44

import gnutls.crypto

45

import gnutls.connection

46

import gnutls.errors

47

import gnutls.library.functions

48

import gnutls.library.constants

49

import gnutls.library.types

50

import ConfigParser as configparser

54

51

import sys

55

52

import re

56

53

import os

65

62

import struct

66

63

import fcntl

67

64

import functools

68

try:

69

import cPickle as pickle

70

except ImportError:

71

import pickle

65

import cPickle as pickle

72

66

import multiprocessing

73

67

import types

74

68

import binascii

75

69

import tempfile

76

70

import itertools

77

71

import collections

78

import codecs

79

72

80

73

import dbus

81

74

import dbus.service

82

from gi.repository import GLib

75

import gobject

76

import avahi

83

77

from dbus.mainloop.glib import DBusGMainLoop

84

78

import ctypes

85

79

import ctypes.util

86

80

import xml.dom.minidom

87

81

import inspect

88

82

89

# Try to find the value of SO_BINDTODEVICE:

90

83

try:

91

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

92

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

93

84

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

94

85

except AttributeError:

95

86

try:

96

# This is where SO_BINDTODEVICE was up to and including Python

97

# 2.6, and also 3.2:

98

87

from IN import SO_BINDTODEVICE

99

88

except ImportError:

100

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

101

# Try running the C preprocessor:

102

try:

103

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

104

"/dev/stdin"],

105

stdin=subprocess.PIPE,

106

stdout=subprocess.PIPE)

107

stdout = cc.communicate(

108

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

109

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

110

except (OSError, ValueError, IndexError):

111

# No value found

112

SO_BINDTODEVICE = None

113

114

if sys.version_info.major == 2:

115

str = unicode

116

117

version = "1.7.10"

89

SO_BINDTODEVICE = None

90

91

version = "1.6.5"

118

92

stored_state_file = "clients.pickle"

119

93

120

94

logger = logging.getLogger()

121

95

syslogger = None

122

96

123

97

try:

124

if_nametoindex = ctypes.cdll.LoadLibrary(

125

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

98

if_nametoindex = (ctypes.cdll.LoadLibrary

99

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

100

.if_nametoindex)

126

101

except (OSError, AttributeError):

127

128

102

def if_nametoindex(interface):

129

103

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

130

104

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

131

105

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

132

106

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

133

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

134

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

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

135

111

return interface_index

136

112

137

113

138

def copy_function(func):

139

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

140

if sys.version_info.major == 2:

141

return types.FunctionType(func.func_code,

142

func.func_globals,

143

func.func_name,

144

func.func_defaults,

145

func.func_closure)

146

else:

147

return types.FunctionType(func.__code__,

148

func.__globals__,

149

func.__name__,

150

func.__defaults__,

151

func.__closure__)

152

153

154

114

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

155

115

"""init logger and add loglevel"""

156

157

global syslogger

158

syslogger = (logging.handlers.SysLogHandler(

159

facility=logging.handlers.SysLogHandler.LOG_DAEMON,

160

address="/dev/log"))

116

117

syslogger = (logging.handlers.SysLogHandler

118

(facility =

119

logging.handlers.SysLogHandler.LOG_DAEMON,

120

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

161

121

syslogger.setFormatter(logging.Formatter

162

122

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

163

123

' %(message)s'))

164

124

logger.addHandler(syslogger)

165

125

166

126

if debug:

167

127

console = logging.StreamHandler()

168

128

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

180

140

181

141

class PGPEngine(object):

182

142

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

183

184

143

def __init__(self):

185

144

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

186

self.gpg = "gpg"

187

try:

188

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

189

for line in output.splitlines():

190

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

191

if name == "gpg":

192

self.gpg = path

193

break

194

except OSError as e:

195

if e.errno != errno.ENOENT:

196

raise

197

145

self.gnupgargs = ['--batch',

198

'--homedir', self.tempdir,

146

'--home', self.tempdir,

199

147

'--force-mdc',

200

'--quiet']

201

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

202

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

203

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

204

148

'--quiet',

149

'--no-use-agent']

150

205

151

def __enter__(self):

206

152

return self

207

153

208

154

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

209

155

self._cleanup()

210

156

return False

211

157

212

158

def __del__(self):

213

159

self._cleanup()

214

160

215

161

def _cleanup(self):

216

162

if self.tempdir is not None:

217

163

# Delete contents of tempdir

218

164

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

219

topdown=False):

165

topdown = False):

220

166

for filename in files:

221

167

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

222

168

for dirname in dirs:

224

170

# Remove tempdir

225

171

os.rmdir(self.tempdir)

226

172

self.tempdir = None

227

173

228

174

def password_encode(self, password):

229

175

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

230

176

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

235

181

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

236

182

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

237

183

return encoded

238

184

239

185

def encrypt(self, data, password):

240

186

passphrase = self.password_encode(password)

241

with tempfile.NamedTemporaryFile(

242

dir=self.tempdir) as passfile:

187

with tempfile.NamedTemporaryFile(dir=self.tempdir

188

) as passfile:

243

189

passfile.write(passphrase)

244

190

passfile.flush()

245

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

191

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

246

192

'--passphrase-file',

247

193

passfile.name]

248

194

+ self.gnupgargs,

249

stdin=subprocess.PIPE,

250

stdout=subprocess.PIPE,

251

stderr=subprocess.PIPE)

252

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

195

stdin = subprocess.PIPE,

196

stdout = subprocess.PIPE,

197

stderr = subprocess.PIPE)

198

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

253

199

if proc.returncode != 0:

254

200

raise PGPError(err)

255

201

return ciphertext

256

202

257

203

def decrypt(self, data, password):

258

204

passphrase = self.password_encode(password)

259

with tempfile.NamedTemporaryFile(

260

dir=self.tempdir) as passfile:

205

with tempfile.NamedTemporaryFile(dir = self.tempdir

206

) as passfile:

261

207

passfile.write(passphrase)

262

208

passfile.flush()

263

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

209

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

264

210

'--passphrase-file',

265

211

passfile.name]

266

212

+ self.gnupgargs,

267

stdin=subprocess.PIPE,

268

stdout=subprocess.PIPE,

269

stderr=subprocess.PIPE)

270

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

213

stdin = subprocess.PIPE,

214

stdout = subprocess.PIPE,

215

stderr = subprocess.PIPE)

216

decrypted_plaintext, err = proc.communicate(input

217

= data)

271

218

if proc.returncode != 0:

272

219

raise PGPError(err)

273

220

return decrypted_plaintext

274

221

275

222

276

# Pretend that we have an Avahi module

277

class Avahi(object):

278

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

279

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

280

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

281

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

282

PROTO_INET = 0 # avahi-common/address.h

283

PROTO_INET6 = 1 # avahi-common/address.h

284

DBUS_NAME = "org.freedesktop.Avahi"

285

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

286

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

287

DBUS_PATH_SERVER = "/"

288

289

def string_array_to_txt_array(self, t):

290

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

291

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

292

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

293

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

294

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

295

SERVER_INVALID = 0 # avahi-common/defs.h

296

SERVER_REGISTERING = 1 # avahi-common/defs.h

297

SERVER_RUNNING = 2 # avahi-common/defs.h

298

SERVER_COLLISION = 3 # avahi-common/defs.h

299

SERVER_FAILURE = 4 # avahi-common/defs.h

300

avahi = Avahi()

301

302

303

223

class AvahiError(Exception):

304

224

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

305

225

self.value = value

306

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

307

**kwargs)

308

226

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

227

def __unicode__(self):

228

return unicode(repr(self.value))

309

229

310

230

class AvahiServiceError(AvahiError):

311

231

pass

312

232

313

314

233

class AvahiGroupError(AvahiError):

315

234

pass

316

235

317

236

318

237

class AvahiService(object):

319

238

"""An Avahi (Zeroconf) service.

320

239

321

240

Attributes:

322

241

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

323

242

Used to optionally bind to the specified interface.

335

254

server: D-Bus Server

336

255

bus: dbus.SystemBus()

337

256

"""

338

339

def __init__(self,

340

interface=avahi.IF_UNSPEC,

341

name=None,

342

servicetype=None,

343

port=None,

344

TXT=None,

345

domain="",

346

host="",

347

max_renames=32768,

348

protocol=avahi.PROTO_UNSPEC,

349

bus=None):

257

258

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

259

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

260

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

261

protocol = avahi.PROTO_UNSPEC, bus = None):

350

262

self.interface = interface

351

263

self.name = name

352

264

self.type = servicetype

361

273

self.server = None

362

274

self.bus = bus

363

275

self.entry_group_state_changed_match = None

364

365

def rename(self, remove=True):

276

277

def rename(self):

366

278

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

367

279

if self.rename_count >= self.max_renames:

368

280

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

369

281

" after %i retries, exiting.",

370

282

self.rename_count)

371

283

raise AvahiServiceError("Too many renames")

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

374

self.rename_count += 1

284

self.name = unicode(self.server

285

.GetAlternativeServiceName(self.name))

375

286

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

376

287

self.name)

377

if remove:

378

self.remove()

288

self.remove()

379

289

try:

380

290

self.add()

381

291

except dbus.exceptions.DBusException as error:

382

if (error.get_dbus_name()

383

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

384

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

385

return self.rename(remove=False)

386

else:

387

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

388

self.cleanup()

389

os._exit(1)

390

292

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

293

self.cleanup()

294

os._exit(1)

295

self.rename_count += 1

296

391

297

def remove(self):

392

298

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

393

299

if self.entry_group_state_changed_match is not None:

395

301

self.entry_group_state_changed_match = None

396

302

if self.group is not None:

397

303

self.group.Reset()

398

304

399

305

def add(self):

400

306

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

401

307

self.remove()

418

324

dbus.UInt16(self.port),

419

325

avahi.string_array_to_txt_array(self.TXT))

420

326

self.group.Commit()

421

327

422

328

def entry_group_state_changed(self, state, error):

423

329

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

424

330

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

425

331

426

332

if state == avahi.ENTRY_GROUP_ESTABLISHED:

427

333

logger.debug("Zeroconf service established.")

428

334

elif state == avahi.ENTRY_GROUP_COLLISION:

430

336

self.rename()

431

337

elif state == avahi.ENTRY_GROUP_FAILURE:

432

338

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

433

str(error))

434

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

435

339

unicode(error))

340

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

341

.format(error))

342

436

343

def cleanup(self):

437

344

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

438

345

if self.group is not None:

443

350

pass

444

351

self.group = None

445

352

self.remove()

446

353

447

354

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

448

355

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

449

356

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

450

bad_states = {

451

avahi.SERVER_INVALID: "Zeroconf server invalid",

452

avahi.SERVER_REGISTERING: None,

453

avahi.SERVER_COLLISION: "Zeroconf server name collision",

454

avahi.SERVER_FAILURE: "Zeroconf server failure",

455

}

357

bad_states = { avahi.SERVER_INVALID:

358

"Zeroconf server invalid",

359

avahi.SERVER_REGISTERING: None,

360

avahi.SERVER_COLLISION:

361

"Zeroconf server name collision",

362

avahi.SERVER_FAILURE:

363

"Zeroconf server failure" }

456

364

if state in bad_states:

457

365

if bad_states[state] is not None:

458

366

if error is None:

461

369

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

462

370

self.cleanup()

463

371

elif state == avahi.SERVER_RUNNING:

464

try:

465

self.add()

466

except dbus.exceptions.DBusException as error:

467

if (error.get_dbus_name()

468

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

469

logger.info("Local Zeroconf service name"

470

" collision.")

471

return self.rename(remove=False)

472

else:

473

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

474

self.cleanup()

475

os._exit(1)

372

self.add()

476

373

else:

477

374

if error is None:

478

375

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

479

376

else:

480

377

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

481

378

482

379

def activate(self):

483

380

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

484

381

if self.server is None:

488

385

follow_name_owner_changes=True),

489

386

avahi.DBUS_INTERFACE_SERVER)

490

387

self.server.connect_to_signal("StateChanged",

491

self.server_state_changed)

388

self.server_state_changed)

492

389

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

493

390

494

391

495

392

class AvahiServiceToSyslog(AvahiService):

496

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

393

def rename(self):

497

394

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

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

395

ret = AvahiService.rename(self)

396

syslogger.setFormatter(logging.Formatter

397

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

398

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

399

.format(self.name)))

502

400

return ret

503

401

504

402

505

# Pretend that we have a GnuTLS module

506

class GnuTLS(object):

507

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

508

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

509

510

_library = ctypes.cdll.LoadLibrary(

511

ctypes.util.find_library("gnutls"))

512

_need_version = b"3.3.0"

513

514

def __init__(self):

515

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

516

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

517

# happens.

518

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

519

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

520

.format(self._need_version))

521

522

# Unless otherwise indicated, the constants and types below are

523

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

524

525

# Constants

526

E_SUCCESS = 0

527

E_INTERRUPTED = -52

528

E_AGAIN = -28

529

CRT_OPENPGP = 2

530

CLIENT = 2

531

SHUT_RDWR = 0

532

CRD_CERTIFICATE = 1

533

E_NO_CERTIFICATE_FOUND = -49

534

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

535

536

# Types

537

class session_int(ctypes.Structure):

538

_fields_ = []

539

session_t = ctypes.POINTER(session_int)

540

541

class certificate_credentials_st(ctypes.Structure):

542

_fields_ = []

543

certificate_credentials_t = ctypes.POINTER(

544

certificate_credentials_st)

545

certificate_type_t = ctypes.c_int

546

547

class datum_t(ctypes.Structure):

548

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

549

('size', ctypes.c_uint)]

550

551

class openpgp_crt_int(ctypes.Structure):

552

_fields_ = []

553

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

554

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

555

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

556

credentials_type_t = ctypes.c_int

557

transport_ptr_t = ctypes.c_void_p

558

close_request_t = ctypes.c_int

559

560

# Exceptions

561

class Error(Exception):

562

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

563

# exception might be raised from within GnuTLS.__init__,

564

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

565

# global variable has happened.

566

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

567

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

568

# code is passed, convert it to a string with

569

# gnutls.strerror()

570

self.code = code

571

if message is None and code is not None:

572

message = GnuTLS.strerror(code)

573

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

574

message, *args)

575

576

class CertificateSecurityError(Error):

577

pass

578

579

# Classes

580

class Credentials(object):

581

def __init__(self):

582

self._c_object = gnutls.certificate_credentials_t()

583

gnutls.certificate_allocate_credentials(

584

ctypes.byref(self._c_object))

585

self.type = gnutls.CRD_CERTIFICATE

586

587

def __del__(self):

588

gnutls.certificate_free_credentials(self._c_object)

589

590

class ClientSession(object):

591

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

592

self._c_object = gnutls.session_t()

593

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

594

gnutls.set_default_priority(self._c_object)

595

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

596

gnutls.handshake_set_private_extensions(self._c_object,

597

True)

598

self.socket = socket

599

if credentials is None:

600

credentials = gnutls.Credentials()

601

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

602

ctypes.cast(credentials._c_object,

603

ctypes.c_void_p))

604

self.credentials = credentials

605

606

def __del__(self):

607

gnutls.deinit(self._c_object)

608

609

def handshake(self):

610

return gnutls.handshake(self._c_object)

611

612

def send(self, data):

613

data = bytes(data)

614

data_len = len(data)

615

while data_len > 0:

616

data_len -= gnutls.record_send(self._c_object,

617

data[-data_len:],

618

data_len)

619

620

def bye(self):

621

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

622

623

# Error handling functions

624

def _error_code(result):

625

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

626

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

627

if result >= 0:

628

return result

629

if result == gnutls.E_NO_CERTIFICATE_FOUND:

630

raise gnutls.CertificateSecurityError(code=result)

631

raise gnutls.Error(code=result)

632

633

def _retry_on_error(result, func, arguments):

634

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

635

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

636

while result < 0:

637

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

638

return _error_code(result)

639

result = func(*arguments)

640

return result

641

642

# Unless otherwise indicated, the function declarations below are

643

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

644

645

# Functions

646

priority_set_direct = _library.gnutls_priority_set_direct

647

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

648

ctypes.POINTER(ctypes.c_char_p)]

649

priority_set_direct.restype = _error_code

650

651

init = _library.gnutls_init

652

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

653

init.restype = _error_code

654

655

set_default_priority = _library.gnutls_set_default_priority

656

set_default_priority.argtypes = [session_t]

657

set_default_priority.restype = _error_code

658

659

record_send = _library.gnutls_record_send

660

record_send.argtypes = [session_t, ctypes.c_void_p,

661

ctypes.c_size_t]

662

record_send.restype = ctypes.c_ssize_t

663

record_send.errcheck = _retry_on_error

664

665

certificate_allocate_credentials = (

666

_library.gnutls_certificate_allocate_credentials)

667

certificate_allocate_credentials.argtypes = [

668

ctypes.POINTER(certificate_credentials_t)]

669

certificate_allocate_credentials.restype = _error_code

670

671

certificate_free_credentials = (

672

_library.gnutls_certificate_free_credentials)

673

certificate_free_credentials.argtypes = [

674

certificate_credentials_t]

675

certificate_free_credentials.restype = None

676

677

handshake_set_private_extensions = (

678

_library.gnutls_handshake_set_private_extensions)

679

handshake_set_private_extensions.argtypes = [session_t,

680

ctypes.c_int]

681

handshake_set_private_extensions.restype = None

682

683

credentials_set = _library.gnutls_credentials_set

684

credentials_set.argtypes = [session_t, credentials_type_t,

685

ctypes.c_void_p]

686

credentials_set.restype = _error_code

687

688

strerror = _library.gnutls_strerror

689

strerror.argtypes = [ctypes.c_int]

690

strerror.restype = ctypes.c_char_p

691

692

certificate_type_get = _library.gnutls_certificate_type_get

693

certificate_type_get.argtypes = [session_t]

694

certificate_type_get.restype = _error_code

695

696

certificate_get_peers = _library.gnutls_certificate_get_peers

697

certificate_get_peers.argtypes = [session_t,

698

ctypes.POINTER(ctypes.c_uint)]

699

certificate_get_peers.restype = ctypes.POINTER(datum_t)

700

701

global_set_log_level = _library.gnutls_global_set_log_level

702

global_set_log_level.argtypes = [ctypes.c_int]

703

global_set_log_level.restype = None

704

705

global_set_log_function = _library.gnutls_global_set_log_function

706

global_set_log_function.argtypes = [log_func]

707

global_set_log_function.restype = None

708

709

deinit = _library.gnutls_deinit

710

deinit.argtypes = [session_t]

711

deinit.restype = None

712

713

handshake = _library.gnutls_handshake

714

handshake.argtypes = [session_t]

715

handshake.restype = _error_code

716

handshake.errcheck = _retry_on_error

717

718

transport_set_ptr = _library.gnutls_transport_set_ptr

719

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

720

transport_set_ptr.restype = None

721

722

bye = _library.gnutls_bye

723

bye.argtypes = [session_t, close_request_t]

724

bye.restype = _error_code

725

bye.errcheck = _retry_on_error

726

727

check_version = _library.gnutls_check_version

728

check_version.argtypes = [ctypes.c_char_p]

729

check_version.restype = ctypes.c_char_p

730

731

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

732

733

openpgp_crt_init = _library.gnutls_openpgp_crt_init

734

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

735

openpgp_crt_init.restype = _error_code

736

737

openpgp_crt_import = _library.gnutls_openpgp_crt_import

738

openpgp_crt_import.argtypes = [openpgp_crt_t,

739

ctypes.POINTER(datum_t),

740

openpgp_crt_fmt_t]

741

openpgp_crt_import.restype = _error_code

742

743

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

744

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

745

ctypes.POINTER(ctypes.c_uint)]

746

openpgp_crt_verify_self.restype = _error_code

747

748

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

749

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

750

openpgp_crt_deinit.restype = None

751

752

openpgp_crt_get_fingerprint = (

753

_library.gnutls_openpgp_crt_get_fingerprint)

754

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

755

ctypes.c_void_p,

756

ctypes.POINTER(

757

ctypes.c_size_t)]

758

openpgp_crt_get_fingerprint.restype = _error_code

759

760

# Remove non-public functions

761

del _error_code, _retry_on_error

762

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

763

gnutls = GnuTLS()

764

765

766

def call_pipe(connection, # : multiprocessing.Connection

767

func, *args, **kwargs):

768

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

769

770

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

771

return value on the provided multiprocessing.Connection.

772

"""

773

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

774

connection.close()

403

def timedelta_to_milliseconds(td):

404

"Convert a datetime.timedelta() to milliseconds"

405

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

406

+ (td.seconds * 1000)

407

+ (td.microseconds // 1000))

775

408

776

409

777

410

class Client(object):

778

411

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

779

412

780

413

Attributes:

781

414

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

782

415

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

784

417

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

785

418

to see if the client lives.

786

419

'None' if no process is running.

787

checker_callback_tag: a GLib event source tag, or None

420

checker_callback_tag: a gobject event source tag, or None

788

421

checker_command: string; External command which is run to check

789

422

if client lives. %() expansions are done at

790

423

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

791

424

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

792

checker_initiator_tag: a GLib event source tag, or None

425

checker_initiator_tag: a gobject event source tag, or None

793

426

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

794

427

client_structure: Object describing what attributes a client has

795

428

and is used for storing the client at exit

796

429

current_checker_command: string; current running checker_command

797

disable_initiator_tag: a GLib event source tag, or None

430

disable_initiator_tag: a gobject event source tag, or None

798

431

enabled: bool()

799

432

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

800

433

uniquely identify the client

805

438

last_checker_status: integer between 0 and 255 reflecting exit

806

439

status of last checker. -1 reflects crashed

807

440

checker, -2 means no checker completed yet.

808

last_checker_signal: The signal which killed the last checker, if

809

last_checker_status is -1

810

441

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

811

442

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

812

443

D-Bus identifiers

819

450

disabled, or None

820

451

server_settings: The server_settings dict from main()

821

452

"""

822

453

823

454

runtime_expansions = ("approval_delay", "approval_duration",

824

455

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

825

456

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

826

457

"last_approval_request", "last_checked_ok",

827

458

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

828

client_defaults = {

829

"timeout": "PT5M",

830

"extended_timeout": "PT15M",

831

"interval": "PT2M",

832

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

833

"host": "",

834

"approval_delay": "PT0S",

835

"approval_duration": "PT1S",

836

"approved_by_default": "True",

837

"enabled": "True",

838

}

839

459

client_defaults = { "timeout": "PT5M",

460

"extended_timeout": "PT15M",

461

"interval": "PT2M",

462

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

463

"host": "",

464

"approval_delay": "PT0S",

465

"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

469

470

def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

473

474

def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

477

478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

484

840

485

@staticmethod

841

486

def config_parser(config):

842

487

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

849

494

for client_name in config.sections():

850

495

section = dict(config.items(client_name))

851

496

client = settings[client_name] = {}

852

497

853

498

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

854

499

# Reformat values from string types to Python types

855

500

client["approved_by_default"] = config.getboolean(

856

501

client_name, "approved_by_default")

857

502

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

858

503

"enabled")

859

860

# Uppercase and remove spaces from fingerprint for later

861

# comparison purposes with return value from the

862

# fingerprint() function

504

863

505

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

864

506

.replace(" ", ""))

865

507

if "secret" in section:

866

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

867

.encode("utf-8"),

868

"base64")

508

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

869

509

elif "secfile" in section:

870

510

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

871

511

(section["secfile"])),

872

512

"rb") as secfile:

873

513

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

874

514

else:

875

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

515

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

876

516

.format(section))

877

517

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

878

518

client["extended_timeout"] = string_to_delta(

886

526

client["last_approval_request"] = None

887

527

client["last_checked_ok"] = None

888

528

client["last_checker_status"] = -2

889

529

890

530

return settings

891

892

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

531

532

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

893

533

self.name = name

894

534

if server_settings is None:

895

535

server_settings = {}

896

536

self.server_settings = server_settings

897

537

# adding all client settings

898

for setting, value in settings.items():

538

for setting, value in settings.iteritems():

899

539

setattr(self, setting, value)

900

540

901

541

if self.enabled:

902

542

if not hasattr(self, "last_enabled"):

903

543

self.last_enabled = datetime.datetime.utcnow()

907

547

else:

908

548

self.last_enabled = None

909

549

self.expires = None

910

550

911

551

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

912

555

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

913

556

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

914

557

datetime.datetime.utcnow())

915

558

916

559

# attributes specific for this server instance

917

560

self.checker = None

918

561

self.checker_initiator_tag = None

921

564

self.current_checker_command = None

922

565

self.approved = None

923

566

self.approvals_pending = 0

924

self.changedstate = multiprocessing_manager.Condition(

925

multiprocessing_manager.Lock())

926

self.client_structure = [attr

927

for attr in self.__dict__.keys()

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

928

572

if not attr.startswith("_")]

929

573

self.client_structure.append("client_structure")

930

931

for name, t in inspect.getmembers(

932

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

574

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

933

579

if not name.startswith("_"):

934

580

self.client_structure.append(name)

935

581

936

582

# Send notice to process children that client state has changed

937

583

def send_changedstate(self):

938

584

with self.changedstate:

939

585

self.changedstate.notify_all()

940

586

941

587

def enable(self):

942

588

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

943

589

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

948

594

self.last_enabled = datetime.datetime.utcnow()

949

595

self.init_checker()

950

596

self.send_changedstate()

951

597

952

598

def disable(self, quiet=True):

953

599

"""Disable this client."""

954

600

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

956

602

if not quiet:

957

603

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

958

604

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

959

GLib.source_remove(self.disable_initiator_tag)

605

gobject.source_remove(self.disable_initiator_tag)

960

606

self.disable_initiator_tag = None

961

607

self.expires = None

962

608

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

963

GLib.source_remove(self.checker_initiator_tag)

609

gobject.source_remove(self.checker_initiator_tag)

964

610

self.checker_initiator_tag = None

965

611

self.stop_checker()

966

612

self.enabled = False

967

613

if not quiet:

968

614

self.send_changedstate()

969

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

615

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

970

616

return False

971

617

972

618

def __del__(self):

973

619

self.disable()

974

620

975

621

def init_checker(self):

976

622

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

977

623

# and every interval from then on.

978

624

if self.checker_initiator_tag is not None:

979

GLib.source_remove(self.checker_initiator_tag)

980

self.checker_initiator_tag = GLib.timeout_add(

981

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

982

self.start_checker)

625

gobject.source_remove(self.checker_initiator_tag)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

983

629

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

984

630

if self.disable_initiator_tag is not None:

985

GLib.source_remove(self.disable_initiator_tag)

986

self.disable_initiator_tag = GLib.timeout_add(

987

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

631

gobject.source_remove(self.disable_initiator_tag)

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

988

635

# Also start a new checker *right now*.

989

636

self.start_checker()

990

991

def checker_callback(self, source, condition, connection,

992

command):

637

638

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

993

639

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

994

640

self.checker_callback_tag = None

995

641

self.checker = None

996

# Read return code from connection (see call_pipe)

997

returncode = connection.recv()

998

connection.close()

999

1000

if returncode >= 0:

1001

self.last_checker_status = returncode

1002

self.last_checker_signal = None

642

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

1003

644

if self.last_checker_status == 0:

1004

645

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

1005

646

vars(self))

1006

647

self.checked_ok()

1007

648

else:

1008

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

649

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

650

vars(self))

1009

651

else:

1010

652

self.last_checker_status = -1

1011

self.last_checker_signal = -returncode

1012

653

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

1013

654

vars(self))

1014

return False

1015

655

1016

656

def checked_ok(self):

1017

657

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

1018

658

self.last_checked_ok = datetime.datetime.utcnow()

1019

659

self.last_checker_status = 0

1020

self.last_checker_signal = None

1021

660

self.bump_timeout()

1022

661

1023

662

def bump_timeout(self, timeout=None):

1024

663

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

1025

664

if timeout is None:

1026

665

timeout = self.timeout

1027

666

if self.disable_initiator_tag is not None:

1028

GLib.source_remove(self.disable_initiator_tag)

667

gobject.source_remove(self.disable_initiator_tag)

1029

668

self.disable_initiator_tag = None

1030

669

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

1031

self.disable_initiator_tag = GLib.timeout_add(

1032

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

1033

673

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

1034

674

1035

675

def need_approval(self):

1036

676

self.last_approval_request = datetime.datetime.utcnow()

1037

677

1038

678

def start_checker(self):

1039

679

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

1040

680

1041

681

If a checker already exists, leave it running and do

1042

682

nothing."""

1043

683

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

1048

688

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

1049

689

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

1050

690

# should be.

1051

1052

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

1053

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

1054

self.checker.join()

1055

self.checker = None

691

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

1056

706

# Start a new checker if needed

1057

707

if self.checker is None:

1058

708

# Escape attributes for the shell

1059

escaped_attrs = {

1060

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

1061

for attr in self.runtime_expansions}

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

1062

713

try:

1063

714

command = self.checker_command % escaped_attrs

1064

715

except TypeError as error:

1065

716

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

1066

self.checker_command,

717

self.checker_command, exc_info=error)

718

return True # Try again later

719

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

1067

741

exc_info=error)

1068

return True # Try again later

1069

self.current_checker_command = command

1070

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

1071

self.name)

1072

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

1073

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

1074

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

1075

# always replaced by /dev/null.)

1076

# The exception is when not debugging but nevertheless

1077

# running in the foreground; use the previously

1078

# created wnull.

1079

popen_args = {"close_fds": True,

1080

"shell": True,

1081

"cwd": "/"}

1082

if (not self.server_settings["debug"]

1083

and self.server_settings["foreground"]):

1084

popen_args.update({"stdout": wnull,

1085

"stderr": wnull})

1086

pipe = multiprocessing.Pipe(duplex=False)

1087

self.checker = multiprocessing.Process(

1088

target=call_pipe,

1089

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

1090

kwargs=popen_args)

1091

self.checker.start()

1092

self.checker_callback_tag = GLib.io_add_watch(

1093

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

1094

self.checker_callback, pipe[0], command)

1095

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

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

761

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

1096

762

return True

1097

763

1098

764

def stop_checker(self):

1099

765

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

1100

766

if self.checker_callback_tag:

1101

GLib.source_remove(self.checker_callback_tag)

767

gobject.source_remove(self.checker_callback_tag)

1102

768

self.checker_callback_tag = None

1103

769

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

1104

770

return

1105

771

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

1106

self.checker.terminate()

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

1107

780

self.checker = None

1108

781

1109

782

1110

def dbus_service_property(dbus_interface,

1111

signature="v",

1112

access="readwrite",

1113

byte_arrays=False):

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

1114

785

"""Decorators for marking methods of a DBusObjectWithProperties to

1115

786

become properties on the D-Bus.

1116

787

1117

788

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

1118

789

and with one argument by "Set".

1119

790

1120

791

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

1121

792

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

1122

793

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

1125

796

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

1126

797

if byte_arrays and signature != "ay":

1127

798

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

1128

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

1129

799

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

1130

800

def decorator(func):

1131

801

func._dbus_is_property = True

1132

802

func._dbus_interface = dbus_interface

1135

805

func._dbus_name = func.__name__

1136

806

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

1137

807

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

1138

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1139

809

return func

1140

1141

810

return decorator

1142

811

1143

812

1144

813

def dbus_interface_annotations(dbus_interface):

1145

814

"""Decorator for marking functions returning interface annotations

1146

815

1147

816

Usage:

1148

817

1149

818

@dbus_interface_annotations("org.example.Interface")

1150

819

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

1151

820

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

1152

821

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

1153

822

"false"}

1154

823

"""

1155

1156

824

def decorator(func):

1157

825

func._dbus_is_interface = True

1158

826

func._dbus_interface = dbus_interface

1159

827

func._dbus_name = dbus_interface

1160

828

return func

1161

1162

829

return decorator

1163

830

1164

831

1165

832

def dbus_annotations(annotations):

1166

833

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

1167

834

Usage:

1168

1169

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

1170

"org.freedesktop.DBus.Property."

1171

"EmitsChangedSignal": "false"})

835

1172

836

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

1173

837

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

1174

841

def Property_dbus_property(self):

1175

842

return dbus.Boolean(False)

1176

1177

See also the DBusObjectWithAnnotations class.

1178

843

"""

1179

1180

844

def decorator(func):

1181

845

func._dbus_annotations = annotations

1182

846

return func

1183

1184

847

return decorator

1185

848

1186

849

1187

850

class DBusPropertyException(dbus.exceptions.DBusException):

1188

851

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

1189

852

"""

1190

pass

853

def __unicode__(self):

854

return unicode(str(self))

1191

855

1192

856

1193

857

class DBusPropertyAccessException(DBusPropertyException):

1202

866

pass

1203

867

1204

868

1205

class DBusObjectWithAnnotations(dbus.service.Object):

1206

"""A D-Bus object with annotations.

1207

1208

Classes inheriting from this can use the dbus_annotations

1209

decorator to add annotations to methods or signals.

869

class DBusObjectWithProperties(dbus.service.Object):

870

"""A D-Bus object with properties.

871

872

Classes inheriting from this can use the dbus_service_property

873

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

874

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

1210

875

"""

1211

876

1212

877

@staticmethod

1213

878

def _is_dbus_thing(thing):

1214

879

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

1215

880

1216

881

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

1217

882

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

1218

883

"""

1219

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

884

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

1220

885

False)

1221

886

1222

887

def _get_all_dbus_things(self, thing):

1223

888

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

1224

889

"""

1225

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

890

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

891

name),

1226

892

athing.__get__(self))

1227

893

for cls in self.__class__.__mro__

1228

894

for name, athing in

1229

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

1230

1231

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1232

out_signature="s",

1233

path_keyword='object_path',

1234

connection_keyword='connection')

1235

def Introspect(self, object_path, connection):

1236

"""Overloading of standard D-Bus method.

1237

1238

Inserts annotation tags on methods and signals.

1239

"""

1240

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

1241

connection)

1242

try:

1243

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

1244

1245

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

1246

# Add annotation tags

1247

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

1248

for tag in if_tag.getElementsByTagName(typ):

1249

annots = dict()

1250

for name, prop in (self.

1251

_get_all_dbus_things(typ)):

1252

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

1253

and prop._dbus_interface

1254

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

1255

annots.update(getattr(

1256

prop, "_dbus_annotations", {}))

1257

for name, value in annots.items():

1258

ann_tag = document.createElement(

1259

"annotation")

1260

ann_tag.setAttribute("name", name)

1261

ann_tag.setAttribute("value", value)

1262

tag.appendChild(ann_tag)

1263

# Add interface annotation tags

1264

for annotation, value in dict(

1265

itertools.chain.from_iterable(

1266

annotations().items()

1267

for name, annotations

1268

in self._get_all_dbus_things("interface")

1269

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

1270

)).items():

1271

ann_tag = document.createElement("annotation")

1272

ann_tag.setAttribute("name", annotation)

1273

ann_tag.setAttribute("value", value)

1274

if_tag.appendChild(ann_tag)

1275

# Fix argument name for the Introspect method itself

1276

if (if_tag.getAttribute("name")

1277

== dbus.INTROSPECTABLE_IFACE):

1278

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

1279

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

1280

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

1281

if (arg.getAttribute("direction")

1282

== "out"):

1283

arg.setAttribute("name",

1284

"xml_data")

1285

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

1286

document.unlink()

1287

except (AttributeError, xml.dom.DOMException,

1288

xml.parsers.expat.ExpatError) as error:

1289

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

1290

exc_info=error)

1291

return xmlstring

1292

1293

1294

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1295

"""A D-Bus object with properties.

1296

1297

Classes inheriting from this can use the dbus_service_property

1298

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

1299

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

1300

"""

1301

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

897

1302

898

def _get_dbus_property(self, interface_name, property_name):

1303

899

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

1304

900

property with the specified name and interface.

1305

901

"""

1306

for cls in self.__class__.__mro__:

1307

for name, value in inspect.getmembers(

1308

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

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

1309

906

if (value._dbus_name == property_name

1310

907

and value._dbus_interface == interface_name):

1311

908

return value.__get__(self)

1312

909

1313

910

# No such property

1314

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

1315

self.dbus_object_path, interface_name, property_name))

1316

1317

@classmethod

1318

def _get_all_interface_names(cls):

1319

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

1320

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

1321

"_dbus_interface", None)

1322

for x in (inspect.getmro(cls))

1323

for attr in dir(x))

1324

if name is not None)

1325

1326

@dbus.service.method(dbus.PROPERTIES_IFACE,

1327

in_signature="ss",

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

914

915

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

1328

916

out_signature="v")

1329

917

def Get(self, interface_name, property_name):

1330

918

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

1336

924

if not hasattr(value, "variant_level"):

1337

925

return value

1338

926

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

1339

927

1340

928

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

1341

929

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

1342

930

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

1349

937

# signatures other than "ay".

1350

938

if prop._dbus_signature != "ay":

1351

939

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

1352

"'ay' signature {!r}"

940

"'ay' signature {0!r}"

1353

941

.format(prop._dbus_signature))

1354

942

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

1355

943

for byte in value))

1356

944

prop(value)

1357

1358

@dbus.service.method(dbus.PROPERTIES_IFACE,

1359

in_signature="s",

945

946

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

1360

947

out_signature="a{sv}")

1361

948

def GetAll(self, interface_name):

1362

949

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

1363

950

standard.

1364

951

1365

952

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

1366

953

"""

1367

954

properties = {}

1377

964

if not hasattr(value, "variant_level"):

1378

965

properties[name] = value

1379

966

continue

1380

properties[name] = type(value)(

1381

value, variant_level=value.variant_level + 1)

967

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

968

value.variant_level+1)

1382

969

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

1383

1384

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

1385

def PropertiesChanged(self, interface_name, changed_properties,

1386

invalidated_properties):

1387

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

1388

standard.

1389

"""

1390

pass

1391

970

1392

971

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1393

972

out_signature="s",

1394

973

path_keyword='object_path',

1395

974

connection_keyword='connection')

1396

975

def Introspect(self, object_path, connection):

1397

976

"""Overloading of standard D-Bus method.

1398

977

1399

978

Inserts property tags and interface annotation tags.

1400

979

"""

1401

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1402

object_path,

1403

connection)

980

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

981

connection)

1404

982

try:

1405

983

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

1406

1407

984

def make_tag(document, name, prop):

1408

985

e = document.createElement("property")

1409

986

e.setAttribute("name", name)

1410

987

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

1411

988

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

1412

989

return e

1413

1414

990

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

1415

991

# Add property tags

1416

992

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

1419

995

if prop._dbus_interface

1420

996

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

1421

997

if_tag.appendChild(tag)

1422

# Add annotation tags for properties

1423

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

1424

annots = dict()

1425

for name, prop in self._get_all_dbus_things(

1426

"property"):

1427

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

1428

and prop._dbus_interface

1429

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

1430

annots.update(getattr(

1431

prop, "_dbus_annotations", {}))

1432

for name, value in annots.items():

1433

ann_tag = document.createElement(

1434

"annotation")

1435

ann_tag.setAttribute("name", name)

1436

ann_tag.setAttribute("value", value)

1437

tag.appendChild(ann_tag)

998

# Add annotation tags

999

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

1000

for tag in if_tag.getElementsByTagName(typ):

1001

annots = dict()

1002

for name, prop in (self.

1003

_get_all_dbus_things(typ)):

1004

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

1005

and prop._dbus_interface

1006

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

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1012

ann_tag = document.createElement(

1013

"annotation")

1014

ann_tag.setAttribute("name", name)

1015

ann_tag.setAttribute("value", value)

1016

tag.appendChild(ann_tag)

1017

# Add interface annotation tags

1018

for annotation, value in dict(

1019

itertools.chain.from_iterable(

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1023

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

1024

)).iteritems():

1025

ann_tag = document.createElement("annotation")

1026

ann_tag.setAttribute("name", annotation)

1027

ann_tag.setAttribute("value", value)

1028

if_tag.appendChild(ann_tag)

1438

1029

# Add the names to the return values for the

1439

1030

# "org.freedesktop.DBus.Properties" methods

1440

1031

if (if_tag.getAttribute("name")

1458

1049

exc_info=error)

1459

1050

return xmlstring

1460

1051

1461

try:

1462

dbus.OBJECT_MANAGER_IFACE

1463

except AttributeError:

1464

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

1465

1466

1467

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1468

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

1469

1470

Classes inheriting from this exposes the standard

1471

GetManagedObjects call and the InterfacesAdded and

1472

InterfacesRemoved signals on the standard

1473

"org.freedesktop.DBus.ObjectManager" interface.

1474

1475

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

1476

manually.

1477

"""

1478

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1479

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

1480

def GetManagedObjects(self):

1481

"""This function must be overridden"""

1482

raise NotImplementedError()

1483

1484

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1485

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

1486

def InterfacesAdded(self, object_path, interfaces_and_properties):

1487

pass

1488

1489

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

1490

def InterfacesRemoved(self, object_path, interfaces):

1491

pass

1492

1493

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1494

out_signature="s",

1495

path_keyword='object_path',

1496

connection_keyword='connection')

1497

def Introspect(self, object_path, connection):

1498

"""Overloading of standard D-Bus method.

1499

1500

Override return argument name of GetManagedObjects to be

1501

"objpath_interfaces_and_properties"

1502

"""

1503

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1504

object_path,

1505

connection)

1506

try:

1507

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

1508

1509

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

1510

# Fix argument name for the GetManagedObjects method

1511

if (if_tag.getAttribute("name")

1512

== dbus.OBJECT_MANAGER_IFACE):

1513

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

1514

if (cn.getAttribute("name")

1515

== "GetManagedObjects"):

1516

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

1517

if (arg.getAttribute("direction")

1518

== "out"):

1519

arg.setAttribute(

1520

"name",

1521

"objpath_interfaces"

1522

"_and_properties")

1523

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

1524

document.unlink()

1525

except (AttributeError, xml.dom.DOMException,

1526

xml.parsers.expat.ExpatError) as error:

1527

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

1528

exc_info=error)

1529

return xmlstring

1530

1531

1052

1532

1053

def datetime_to_dbus(dt, variant_level=0):

1533

1054

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

1534

1055

if dt is None:

1535

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

1536

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

1056

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1537

1059

1538

1060

1539

1061

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1541

1063

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

1542

1064

interface names according to the "alt_interface_names" mapping.

1543

1065

Usage:

1544

1066

1545

1067

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

1546

1068

"net.example.AlternateInterface"})

1547

1069

class SampleDBusObject(dbus.service.Object):

1548

1070

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

1549

1071

def SampleDBusMethod():

1550

1072

pass

1551

1073

1552

1074

The above "SampleDBusMethod" on "SampleDBusObject" will be

1553

1075

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

1554

1076

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

1555

1077

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

1556

1078

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

1557

1079

1558

1080

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

1559

1081

(from DBusObjectWithProperties) and interfaces (from the

1560

1082

dbus_interface_annotations decorator).

1561

1083

"""

1562

1563

1084

def wrapper(cls):

1564

1085

for orig_interface_name, alt_interface_name in (

1565

alt_interface_names.items()):

1086

alt_interface_names.iteritems()):

1566

1087

attr = {}

1567

1088

interface_names = set()

1568

1089

# Go though all attributes of the class

1570

1091

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

1571

1092

# with the wrong interface name

1572

1093

if (not hasattr(attribute, "_dbus_interface")

1573

or not attribute._dbus_interface.startswith(

1574

orig_interface_name)):

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1575

1096

continue

1576

1097

# Create an alternate D-Bus interface name based on

1577

1098

# the current name

1578

alt_interface = attribute._dbus_interface.replace(

1579

orig_interface_name, alt_interface_name)

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1580

1102

interface_names.add(alt_interface)

1581

1103

# Is this a D-Bus signal?

1582

1104

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

1583

1105

# Extract the original non-method undecorated

1584

1106

# function by black magic

1585

if sys.version_info.major == 2:

1586

nonmethod_func = (dict(

1107

nonmethod_func = (dict(

1587

1108

zip(attribute.func_code.co_freevars,

1588

attribute.__closure__))

1589

["func"].cell_contents)

1590

else:

1591

nonmethod_func = (dict(

1592

zip(attribute.__code__.co_freevars,

1593

attribute.__closure__))

1594

["func"].cell_contents)

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1595

1111

# Create a new, but exactly alike, function

1596

1112

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

1597

1113

# with the alternate D-Bus interface name

1598

new_function = copy_function(nonmethod_func)

1599

new_function = (dbus.service.signal(

1600

alt_interface,

1601

attribute._dbus_signature)(new_function))

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1117

(types.FunctionType(

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1602

1123

# Copy annotations, if any

1603

1124

try:

1604

new_function._dbus_annotations = dict(

1605

attribute._dbus_annotations)

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1606

1127

except AttributeError:

1607

1128

pass

1608

1609

1129

# Define a creator of a function to call both the

1610

1130

# original and alternate functions, so both the

1611

1131

# original and alternate signals gets sent when

1614

1134

"""This function is a scope container to pass

1615

1135

func1 and func2 to the "call_both" function

1616

1136

outside of its arguments"""

1617

1618

@functools.wraps(func2)

1619

1137

def call_both(*args, **kwargs):

1620

1138

"""This function will emit two D-Bus

1621

1139

signals by calling func1 and func2"""

1622

1140

func1(*args, **kwargs)

1623

1141

func2(*args, **kwargs)

1624

# Make wrapper function look like a D-Bus

1625

# signal

1626

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

1627

if name.startswith("_dbus_"):

1628

setattr(call_both, name, attr)

1629

1630

1142

return call_both

1631

1143

# Create the "call_both" function and add it to

1632

1144

# the class

1637

1149

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

1638

1150

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

1639

1151

# to the class.

1640

attr[attrname] = (

1641

dbus.service.method(

1642

alt_interface,

1643

attribute._dbus_in_signature,

1644

attribute._dbus_out_signature)

1645

(copy_function(attribute)))

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1646

1162

# Copy annotations, if any

1647

1163

try:

1648

attr[attrname]._dbus_annotations = dict(

1649

attribute._dbus_annotations)

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1650

1166

except AttributeError:

1651

1167

pass

1652

1168

# Is this a D-Bus property?

1655

1171

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

1656

1172

# property with the alternate D-Bus interface

1657

1173

# name. Add it to the class.

1658

attr[attrname] = (dbus_service_property(

1659

alt_interface, attribute._dbus_signature,

1660

attribute._dbus_access,

1661

attribute._dbus_get_args_options

1662

["byte_arrays"])

1663

(copy_function(attribute)))

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1664

1187

# Copy annotations, if any

1665

1188

try:

1666

attr[attrname]._dbus_annotations = dict(

1667

attribute._dbus_annotations)

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1668

1191

except AttributeError:

1669

1192

pass

1670

1193

# Is this a D-Bus interface?

1673

1196

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

1674

1197

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

1675

1198

# to the class.

1676

attr[attrname] = (

1677

dbus_interface_annotations(alt_interface)

1678

(copy_function(attribute)))

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1679

1207

if deprecate:

1680

1208

# Deprecate all alternate interfaces

1681

iname = "_AlternateDBusNames_interface_annotation{}"

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1682

1210

for interface_name in interface_names:

1683

1684

1211

@dbus_interface_annotations(interface_name)

1685

1212

def func(self):

1686

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

1687

"true"}

1213

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

1214

"true" }

1688

1215

# Find an unused name

1689

1216

for aname in (iname.format(i)

1690

1217

for i in itertools.count()):

1694

1221

if interface_names:

1695

1222

# Replace the class with a new subclass of it with

1696

1223

# methods, signals, etc. as created above.

1697

if sys.version_info.major == 2:

1698

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

1699

(cls, ), attr)

1700

else:

1701

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

1702

(cls, ), attr)

1224

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

1225

(cls,), attr)

1703

1226

return cls

1704

1705

1227

return wrapper

1706

1228

1707

1229

1708

1230

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

1709

"se.bsnet.fukt.Mandos"})

1231

"se.bsnet.fukt.Mandos"})

1710

1232

class ClientDBus(Client, DBusObjectWithProperties):

1711

1233

"""A Client class using D-Bus

1712

1234

1713

1235

Attributes:

1714

1236

dbus_object_path: dbus.ObjectPath

1715

1237

bus: dbus.SystemBus()

1716

1238

"""

1717

1239

1718

1240

runtime_expansions = (Client.runtime_expansions

1719

+ ("dbus_object_path", ))

1720

1721

_interface = "se.recompile.Mandos.Client"

1722

1241

+ ("dbus_object_path",))

1242

1723

1243

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

1724

1725

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

1244

1245

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

1726

1246

self.bus = bus

1727

1247

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

1728

1248

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

1729

1249

# the D-Bus

1730

client_object_name = str(self.name).translate(

1250

client_object_name = unicode(self.name).translate(

1731

1251

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

1732

1252

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

1733

self.dbus_object_path = dbus.ObjectPath(

1734

"/clients/" + client_object_name)

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1735

1255

DBusObjectWithProperties.__init__(self, self.bus,

1736

1256

self.dbus_object_path)

1737

1738

def notifychangeproperty(transform_func, dbus_name,

1739

type_func=lambda x: x,

1740

variant_level=1,

1741

invalidate_only=False,

1742

_interface=_interface):

1257

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1743

1261

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

1744

1262

its changes to DBus.

1745

1263

1746

1264

transform_fun: Function that takes a value and a variant_level

1747

1265

and transforms it to a D-Bus type.

1748

1266

dbus_name: D-Bus name of the variable

1750

1268

to the D-Bus. Default: no transform

1751

1269

variant_level: D-Bus variant level. Default: 1

1752

1270

"""

1753

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

1754

1271

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

1755

1272

def setter(self, value):

1756

1273

if hasattr(self, "dbus_object_path"):

1757

1274

if (not hasattr(self, attrname) or

1758

1275

type_func(getattr(self, attrname, None))

1759

1276

!= type_func(value)):

1760

if invalidate_only:

1761

self.PropertiesChanged(

1762

_interface, dbus.Dictionary(),

1763

dbus.Array((dbus_name, )))

1764

else:

1765

dbus_value = transform_func(

1766

type_func(value),

1767

variant_level=variant_level)

1768

self.PropertyChanged(dbus.String(dbus_name),

1769

dbus_value)

1770

self.PropertiesChanged(

1771

_interface,

1772

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

1773

dbus_value}),

1774

dbus.Array())

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1775

1282

setattr(self, attrname, value)

1776

1283

1777

1284

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

1778

1285

1779

1286

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1780

1287

approvals_pending = notifychangeproperty(dbus.Boolean,

1781

1288

"ApprovalPending",

1782

type_func=bool)

1289

type_func = bool)

1783

1290

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

1784

1291

last_enabled = notifychangeproperty(datetime_to_dbus,

1785

1292

"LastEnabled")

1786

checker = notifychangeproperty(

1787

dbus.Boolean, "CheckerRunning",

1788

type_func=lambda checker: checker is not None)

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1789

1296

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1790

1297

"LastCheckedOK")

1791

1298

last_checker_status = notifychangeproperty(dbus.Int16,

1794

1301

datetime_to_dbus, "LastApprovalRequest")

1795

1302

approved_by_default = notifychangeproperty(dbus.Boolean,

1796

1303

"ApprovedByDefault")

1797

approval_delay = notifychangeproperty(

1798

dbus.UInt64, "ApprovalDelay",

1799

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

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1800

1308

approval_duration = notifychangeproperty(

1801

1309

dbus.UInt64, "ApprovalDuration",

1802

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

1310

type_func = timedelta_to_milliseconds)

1803

1311

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

1804

timeout = notifychangeproperty(

1805

dbus.UInt64, "Timeout",

1806

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1807

1315

extended_timeout = notifychangeproperty(

1808

1316

dbus.UInt64, "ExtendedTimeout",

1809

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

1810

interval = notifychangeproperty(

1811

dbus.UInt64, "Interval",

1812

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

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1813

1322

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

1814

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

1815

invalidate_only=True)

1816

1323

1817

1324

del notifychangeproperty

1818

1325

1819

1326

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

1820

1327

try:

1821

1328

self.remove_from_connection()

1824

1331

if hasattr(DBusObjectWithProperties, "__del__"):

1825

1332

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

1826

1333

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

1827

1828

def checker_callback(self, source, condition,

1829

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

1830

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

1831

connection, command, *args,

1832

**kwargs)

1833

exitstatus = self.last_checker_status

1834

if exitstatus >= 0:

1334

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1835

1341

# Emit D-Bus signal

1836

1342

self.CheckerCompleted(dbus.Int16(exitstatus),

1837

# This is specific to GNU libC

1838

dbus.Int64(exitstatus << 8),

1343

dbus.Int64(condition),

1839

1344

dbus.String(command))

1840

1345

else:

1841

1346

# Emit D-Bus signal

1842

1347

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

1843

dbus.Int64(

1844

# This is specific to GNU libC

1845

(exitstatus << 8)

1846

| self.last_checker_signal),

1348

dbus.Int64(condition),

1847

1349

dbus.String(command))

1848

return ret

1849

1350

1351

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

1352

*args, **kwargs)

1353

1850

1354

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

1851

1355

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

1852

1356

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

1856

1360

# Emit D-Bus signal

1857

1361

self.CheckerStarted(self.current_checker_command)

1858

1362

return r

1859

1363

1860

1364

def _reset_approved(self):

1861

1365

self.approved = None

1862

1366

return False

1863

1367

1864

1368

def approve(self, value=True):

1865

1369

self.approved = value

1866

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

1867

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1868

1373

self.send_changedstate()

1869

1870

# D-Bus methods, signals & properties

1871

1872

# Interfaces

1873

1874

# Signals

1875

1374

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1377

1378

## Interfaces

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1385

## Signals

1386

1876

1387

# CheckerCompleted - signal

1877

1388

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

1878

1389

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

1879

1390

"D-Bus signal"

1880

1391

pass

1881

1392

1882

1393

# CheckerStarted - signal

1883

1394

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

1884

1395

def CheckerStarted(self, command):

1885

1396

"D-Bus signal"

1886

1397

pass

1887

1398

1888

1399

# PropertyChanged - signal

1889

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

1890

1400

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

1891

1401

def PropertyChanged(self, property, value):

1892

1402

"D-Bus signal"

1893

1403

pass

1894

1404

1895

1405

# GotSecret - signal

1896

1406

@dbus.service.signal(_interface)

1897

1407

def GotSecret(self):

1900

1410

server to mandos-client

1901

1411

"""

1902

1412

pass

1903

1413

1904

1414

# Rejected - signal

1905

1415

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

1906

1416

def Rejected(self, reason):

1907

1417

"D-Bus signal"

1908

1418

pass

1909

1419

1910

1420

# NeedApproval - signal

1911

1421

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

1912

1422

def NeedApproval(self, timeout, default):

1913

1423

"D-Bus signal"

1914

1424

return self.need_approval()

1915

1916

# Methods

1917

1425

1426

## Methods

1427

1918

1428

# Approve - method

1919

1429

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

1920

1430

def Approve(self, value):

1921

1431

self.approve(value)

1922

1432

1923

1433

# CheckedOK - method

1924

1434

@dbus.service.method(_interface)

1925

1435

def CheckedOK(self):

1926

1436

self.checked_ok()

1927

1437

1928

1438

# Enable - method

1929

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

1930

1439

@dbus.service.method(_interface)

1931

1440

def Enable(self):

1932

1441

"D-Bus method"

1933

1442

self.enable()

1934

1443

1935

1444

# StartChecker - method

1936

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

1937

1445

@dbus.service.method(_interface)

1938

1446

def StartChecker(self):

1939

1447

"D-Bus method"

1940

1448

self.start_checker()

1941

1449

1942

1450

# Disable - method

1943

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

1944

1451

@dbus.service.method(_interface)

1945

1452

def Disable(self):

1946

1453

"D-Bus method"

1947

1454

self.disable()

1948

1455

1949

1456

# StopChecker - method

1950

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

1951

1457

@dbus.service.method(_interface)

1952

1458

def StopChecker(self):

1953

1459

self.stop_checker()

1954

1955

# Properties

1956

1460

1461

## Properties

1462

1957

1463

# ApprovalPending - property

1958

1464

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

1959

1465

def ApprovalPending_dbus_property(self):

1960

1466

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

1961

1467

1962

1468

# ApprovedByDefault - property

1963

@dbus_service_property(_interface,

1964

signature="b",

1469

@dbus_service_property(_interface, signature="b",

1965

1470

access="readwrite")

1966

1471

def ApprovedByDefault_dbus_property(self, value=None):

1967

1472

if value is None: # get

1968

1473

return dbus.Boolean(self.approved_by_default)

1969

1474

self.approved_by_default = bool(value)

1970

1475

1971

1476

# ApprovalDelay - property

1972

@dbus_service_property(_interface,

1973

signature="t",

1477

@dbus_service_property(_interface, signature="t",

1974

1478

access="readwrite")

1975

1479

def ApprovalDelay_dbus_property(self, value=None):

1976

1480

if value is None: # get

1977

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

1978

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1979

1482

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

1980

1483

1981

1484

# ApprovalDuration - property

1982

@dbus_service_property(_interface,

1983

signature="t",

1485

@dbus_service_property(_interface, signature="t",

1984

1486

access="readwrite")

1985

1487

def ApprovalDuration_dbus_property(self, value=None):

1986

1488

if value is None: # get

1987

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

1988

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1989

1491

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

1990

1492

1991

1493

# Name - property

1992

@dbus_annotations(

1993

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

1994

1494

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

1995

1495

def Name_dbus_property(self):

1996

1496

return dbus.String(self.name)

1997

1497

1998

1498

# Fingerprint - property

1999

@dbus_annotations(

2000

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

2001

1499

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

2002

1500

def Fingerprint_dbus_property(self):

2003

1501

return dbus.String(self.fingerprint)

2004

1502

2005

1503

# Host - property

2006

@dbus_service_property(_interface,

2007

signature="s",

1504

@dbus_service_property(_interface, signature="s",

2008

1505

access="readwrite")

2009

1506

def Host_dbus_property(self, value=None):

2010

1507

if value is None: # get

2011

1508

return dbus.String(self.host)

2012

self.host = str(value)

2013

1509

self.host = unicode(value)

1510

2014

1511

# Created - property

2015

@dbus_annotations(

2016

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

2017

1512

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

2018

1513

def Created_dbus_property(self):

2019

1514

return datetime_to_dbus(self.created)

2020

1515

2021

1516

# LastEnabled - property

2022

1517

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

2023

1518

def LastEnabled_dbus_property(self):

2024

1519

return datetime_to_dbus(self.last_enabled)

2025

1520

2026

1521

# Enabled - property

2027

@dbus_service_property(_interface,

2028

signature="b",

1522

@dbus_service_property(_interface, signature="b",

2029

1523

access="readwrite")

2030

1524

def Enabled_dbus_property(self, value=None):

2031

1525

if value is None: # get

2034

1528

self.enable()

2035

1529

else:

2036

1530

self.disable()

2037

1531

2038

1532

# LastCheckedOK - property

2039

@dbus_service_property(_interface,

2040

signature="s",

1533

@dbus_service_property(_interface, signature="s",

2041

1534

access="readwrite")

2042

1535

def LastCheckedOK_dbus_property(self, value=None):

2043

1536

if value is not None:

2044

1537

self.checked_ok()

2045

1538

return

2046

1539

return datetime_to_dbus(self.last_checked_ok)

2047

1540

2048

1541

# LastCheckerStatus - property

2049

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

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

2050

1544

def LastCheckerStatus_dbus_property(self):

2051

1545

return dbus.Int16(self.last_checker_status)

2052

1546

2053

1547

# Expires - property

2054

1548

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

2055

1549

def Expires_dbus_property(self):

2056

1550

return datetime_to_dbus(self.expires)

2057

1551

2058

1552

# LastApprovalRequest - property

2059

1553

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

2060

1554

def LastApprovalRequest_dbus_property(self):

2061

1555

return datetime_to_dbus(self.last_approval_request)

2062

1556

2063

1557

# Timeout - property

2064

@dbus_service_property(_interface,

2065

signature="t",

1558

@dbus_service_property(_interface, signature="t",

2066

1559

access="readwrite")

2067

1560

def Timeout_dbus_property(self, value=None):

2068

1561

if value is None: # get

2069

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

1562

return dbus.UInt64(self.timeout_milliseconds())

2070

1563

old_timeout = self.timeout

2071

1564

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

2072

1565

# Reschedule disabling

2080

1573

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

2081

1574

is None):

2082

1575

return

2083

GLib.source_remove(self.disable_initiator_tag)

2084

self.disable_initiator_tag = GLib.timeout_add(

2085

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

2086

self.disable)

2087

1576

gobject.source_remove(self.disable_initiator_tag)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1581

2088

1582

# ExtendedTimeout - property

2089

@dbus_service_property(_interface,

2090

signature="t",

1583

@dbus_service_property(_interface, signature="t",

2091

1584

access="readwrite")

2092

1585

def ExtendedTimeout_dbus_property(self, value=None):

2093

1586

if value is None: # get

2094

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

2095

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

2096

1588

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

2097

1589

2098

1590

# Interval - property

2099

@dbus_service_property(_interface,

2100

signature="t",

1591

@dbus_service_property(_interface, signature="t",

2101

1592

access="readwrite")

2102

1593

def Interval_dbus_property(self, value=None):

2103

1594

if value is None: # get

2104

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

1595

return dbus.UInt64(self.interval_milliseconds())

2105

1596

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

2106

1597

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

2107

1598

return

2108

1599

if self.enabled:

2109

1600

# Reschedule checker run

2110

GLib.source_remove(self.checker_initiator_tag)

2111

self.checker_initiator_tag = GLib.timeout_add(

2112

value, self.start_checker)

2113

self.start_checker() # Start one now, too

2114

1601

gobject.source_remove(self.checker_initiator_tag)

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

1605

2115

1606

# Checker - property

2116

@dbus_service_property(_interface,

2117

signature="s",

1607

@dbus_service_property(_interface, signature="s",

2118

1608

access="readwrite")

2119

1609

def Checker_dbus_property(self, value=None):

2120

1610

if value is None: # get

2121

1611

return dbus.String(self.checker_command)

2122

self.checker_command = str(value)

2123

1612

self.checker_command = unicode(value)

1613

2124

1614

# CheckerRunning - property

2125

@dbus_service_property(_interface,

2126

signature="b",

1615

@dbus_service_property(_interface, signature="b",

2127

1616

access="readwrite")

2128

1617

def CheckerRunning_dbus_property(self, value=None):

2129

1618

if value is None: # get

2132

1621

self.start_checker()

2133

1622

else:

2134

1623

self.stop_checker()

2135

1624

2136

1625

# ObjectPath - property

2137

@dbus_annotations(

2138

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

2139

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

2140

1626

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

2141

1627

def ObjectPath_dbus_property(self):

2142

return self.dbus_object_path # is already a dbus.ObjectPath

2143

1628

return self.dbus_object_path # is already a dbus.ObjectPath

1629

2144

1630

# Secret = property

2145

@dbus_annotations(

2146

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

2147

"invalidates"})

2148

@dbus_service_property(_interface,

2149

signature="ay",

2150

access="write",

2151

byte_arrays=True)

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

2152

1633

def Secret_dbus_property(self, value):

2153

self.secret = bytes(value)

2154

1634

self.secret = str(value)

1635

2155

1636

del _interface

2156

1637

2157

1638

2160

1641

self._pipe = child_pipe

2161

1642

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

2162

1643

if not self._pipe.recv():

2163

raise KeyError(fpr)

2164

1644

raise KeyError()

1645

2165

1646

def __getattribute__(self, name):

2166

1647

if name == '_pipe':

2167

1648

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

2170

1651

if data[0] == 'data':

2171

1652

return data[1]

2172

1653

if data[0] == 'function':

2173

2174

1654

def func(*args, **kwargs):

2175

1655

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

2176

1656

return self._pipe.recv()[1]

2177

2178

1657

return func

2179

1658

2180

1659

def __setattr__(self, name, value):

2181

1660

if name == '_pipe':

2182

1661

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

2185

1664

2186

1665

class ClientHandler(socketserver.BaseRequestHandler, object):

2187

1666

"""A class to handle client connections.

2188

1667

2189

1668

Instantiated once for each connection to handle it.

2190

1669

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

2191

1670

2192

1671

def handle(self):

2193

1672

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

2194

1673

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

2195

str(self.client_address))

1674

unicode(self.client_address))

2196

1675

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

2197

1676

self.server.child_pipe.fileno())

2198

2199

session = gnutls.ClientSession(self.request)

2200

2201

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

2202

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

2203

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

2204

# "+DHE-DSS"))

1677

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1682

1683

# Note: gnutls.connection.X509Credentials is really a

1684

# generic GnuTLS certificate credentials object so long as

1685

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

1686

# here despite using OpenPGP certificates.

1687

1688

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

1689

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

1690

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

1691

# "+DHE-DSS"))

2205

1692

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

2206

1693

priority = self.server.gnutls_priority

2207

1694

if priority is None:

2208

1695

priority = "NORMAL"

2209

gnutls.priority_set_direct(session._c_object,

2210

priority.encode("utf-8"),

2211

None)

2212

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

1699

2213

1700

# Start communication using the Mandos protocol

2214

1701

# Get protocol number

2215

1702

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

2220

1707

except (ValueError, IndexError, RuntimeError) as error:

2221

1708

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

2222

1709

return

2223

1710

2224

1711

# Start GnuTLS connection

2225

1712

try:

2226

1713

session.handshake()

2227

except gnutls.Error as error:

1714

except gnutls.errors.GNUTLSError as error:

2228

1715

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

2229

1716

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

2230

1717

# established. Just abandon the request.

2231

1718

return

2232

1719

logger.debug("Handshake succeeded")

2233

1720

2234

1721

approval_required = False

2235

1722

try:

2236

1723

try:

2237

fpr = self.fingerprint(

2238

self.peer_certificate(session))

2239

except (TypeError, gnutls.Error) as error:

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1726

except (TypeError,

1727

gnutls.errors.GNUTLSError) as error:

2240

1728

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

2241

1729

return

2242

1730

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

2243

1731

2244

1732

try:

2245

1733

client = ProxyClient(child_pipe, fpr,

2246

1734

self.client_address)

2247

1735

except KeyError:

2248

1736

return

2249

1737

2250

1738

if client.approval_delay:

2251

1739

delay = client.approval_delay

2252

1740

client.approvals_pending += 1

2253

1741

approval_required = True

2254

1742

2255

1743

while True:

2256

1744

if not client.enabled:

2257

1745

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

2258

client.name)

1746

client.name)

2259

1747

if self.server.use_dbus:

2260

1748

# Emit D-Bus signal

2261

1749

client.Rejected("Disabled")

2262

1750

return

2263

1751

2264

1752

if client.approved or not client.approval_delay:

2265

# We are approved or approval is disabled

1753

#We are approved or approval is disabled

2266

1754

break

2267

1755

elif client.approved is None:

2268

1756

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

2270

1758

if self.server.use_dbus:

2271

1759

# Emit D-Bus signal

2272

1760

client.NeedApproval(

2273

client.approval_delay.total_seconds()

2274

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

2275

1763

else:

2276

1764

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

2277

1765

client.name)

2279

1767

# Emit D-Bus signal

2280

1768

client.Rejected("Denied")

2281

1769

return

2282

2283

# wait until timeout or approved

1770

1771

#wait until timeout or approved

2284

1772

time = datetime.datetime.now()

2285

1773

client.changedstate.acquire()

2286

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

2287

1777

client.changedstate.release()

2288

1778

time2 = datetime.datetime.now()

2289

1779

if (time2 - time) >= delay:

2299

1789

break

2300

1790

else:

2301

1791

delay -= time2 - time

2302

2303

try:

2304

session.send(client.secret)

2305

except gnutls.Error as error:

2306

logger.warning("gnutls send failed",

2307

exc_info=error)

2308

return

2309

1792

1793

sent_size = 0

1794

while sent_size < len(client.secret):

1795

try:

1796

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

1797

except gnutls.errors.GNUTLSError as error:

1798

logger.warning("gnutls send failed",

1799

exc_info=error)

1800

return

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1804

sent_size += sent

1805

2310

1806

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

2311

1807

# bump the timeout using extended_timeout

2312

1808

client.bump_timeout(client.extended_timeout)

2313

1809

if self.server.use_dbus:

2314

1810

# Emit D-Bus signal

2315

1811

client.GotSecret()

2316

1812

2317

1813

finally:

2318

1814

if approval_required:

2319

1815

client.approvals_pending -= 1

2320

1816

try:

2321

1817

session.bye()

2322

except gnutls.Error as error:

1818

except gnutls.errors.GNUTLSError as error:

2323

1819

logger.warning("GnuTLS bye failed",

2324

1820

exc_info=error)

2325

1821

2326

1822

@staticmethod

2327

1823

def peer_certificate(session):

2328

1824

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

2329

1825

# If not an OpenPGP certificate...

2330

if (gnutls.certificate_type_get(session._c_object)

2331

!= gnutls.CRT_OPENPGP):

2332

# ...return invalid data

2333

return b""

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1829

# ...do the normal thing

1830

return session.peer_certificate

2334

1831

list_size = ctypes.c_uint(1)

2335

cert_list = (gnutls.certificate_get_peers

1832

cert_list = (gnutls.library.functions

1833

.gnutls_certificate_get_peers

2336

1834

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

2337

1835

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

2338

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

1836

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

1837

" certificate")

2339

1838

if list_size.value == 0:

2340

1839

return None

2341

1840

cert = cert_list[0]

2342

1841

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

2343

1842

2344

1843

@staticmethod

2345

1844

def fingerprint(openpgp):

2346

1845

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2347

1846

# New GnuTLS "datum" with the OpenPGP public key

2348

datum = gnutls.datum_t(

2349

ctypes.cast(ctypes.c_char_p(openpgp),

2350

ctypes.POINTER(ctypes.c_ubyte)),

2351

ctypes.c_uint(len(openpgp)))

1847

datum = (gnutls.library.types

1848

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

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

2352

1852

# New empty GnuTLS certificate

2353

crt = gnutls.openpgp_crt_t()

2354

gnutls.openpgp_crt_init(ctypes.byref(crt))

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2355

1856

# Import the OpenPGP public key into the certificate

2356

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

2357

gnutls.OPENPGP_FMT_RAW)

1857

(gnutls.library.functions

1858

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

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

2358

1861

# Verify the self signature in the key

2359

1862

crtverify = ctypes.c_uint()

2360

gnutls.openpgp_crt_verify_self(crt, 0,

2361

ctypes.byref(crtverify))

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

2362

1866

if crtverify.value != 0:

2363

gnutls.openpgp_crt_deinit(crt)

2364

raise gnutls.CertificateSecurityError("Verify failed")

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

2365

1870

# New buffer for the fingerprint

2366

1871

buf = ctypes.create_string_buffer(20)

2367

1872

buf_len = ctypes.c_size_t()

2368

1873

# Get the fingerprint from the certificate into the buffer

2369

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

2370

ctypes.byref(buf_len))

1874

(gnutls.library.functions

1875

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

1876

ctypes.byref(buf_len)))

2371

1877

# Deinit the certificate

2372

gnutls.openpgp_crt_deinit(crt)

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2373

1879

# Convert the buffer to a Python bytestring

2374

1880

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

2375

1881

# Convert the bytestring to hexadecimal notation

2379

1885

2380

1886

class MultiprocessingMixIn(object):

2381

1887

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

2382

2383

1888

def sub_process_main(self, request, address):

2384

1889

try:

2385

1890

self.finish_request(request, address)

2386

1891

except Exception:

2387

1892

self.handle_error(request, address)

2388

1893

self.close_request(request)

2389

1894

2390

1895

def process_request(self, request, address):

2391

1896

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

2392

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

2393

args=(request, address))

1897

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

1898

args = (request, address))

2394

1899

proc.start()

2395

1900

return proc

2396

1901

2397

1902

2398

1903

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2399

1904

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

2400

2401

1905

def process_request(self, request, client_address):

2402

1906

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

2403

1907

2404

1908

This function creates a new pipe in self.pipe

2405

1909

"""

2406

1910

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2407

1911

2408

1912

proc = MultiprocessingMixIn.process_request(self, request,

2409

1913

client_address)

2410

1914

self.child_pipe.close()

2411

1915

self.add_pipe(parent_pipe, proc)

2412

1916

2413

1917

def add_pipe(self, parent_pipe, proc):

2414

1918

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

2415

1919

raise NotImplementedError()

2418

1922

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2419

1923

socketserver.TCPServer, object):

2420

1924

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

2421

1925

2422

1926

Attributes:

2423

1927

enabled: Boolean; whether this server is activated yet

2424

1928

interface: None or a network interface name (string)

2425

1929

use_ipv6: Boolean; to use IPv6 or not

2426

1930

"""

2427

2428

1931

def __init__(self, server_address, RequestHandlerClass,

2429

interface=None,

2430

use_ipv6=True,

2431

socketfd=None):

1932

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

2432

1933

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

2433

1934

creating a new one with socket.socket().

2434

1935

"""

2440

1941

self.socketfd = socketfd

2441

1942

# Save the original socket.socket() function

2442

1943

self.socket_socket = socket.socket

2443

2444

1944

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

2445

#

1945

#

2446

1946

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

2447

1947

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

2448

1948

# patching socket.socket.)

2449

#

1949

#

2450

1950

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

2451

1951

@functools.wraps(socket.socket)

2452

1952

def socket_wrapper(*args, **kwargs):

2464

1964

# socket_wrapper(), if socketfd was set.

2465

1965

socketserver.TCPServer.__init__(self, server_address,

2466

1966

RequestHandlerClass)

2467

1967

2468

1968

def server_bind(self):

2469

1969

"""This overrides the normal server_bind() function

2470

1970

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

2471

1971

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

2472

global SO_BINDTODEVICE

2473

1972

if self.interface is not None:

2474

1973

if SO_BINDTODEVICE is None:

2475

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

2476

# common enough.

2477

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

2478

SO_BINDTODEVICE = 25

2479

try:

2480

self.socket.setsockopt(

2481

socket.SOL_SOCKET, SO_BINDTODEVICE,

2482

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

2483

except socket.error as error:

2484

if error.errno == errno.EPERM:

2485

logger.error("No permission to bind to"

2486

" interface %s", self.interface)

2487

elif error.errno == errno.ENOPROTOOPT:

2488

logger.error("SO_BINDTODEVICE not available;"

2489

" cannot bind to interface %s",

2490

self.interface)

2491

elif error.errno == errno.ENODEV:

2492

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

2493

" cannot bind", self.interface)

2494

else:

2495

raise

1974

logger.error("SO_BINDTODEVICE does not exist;"

1975

" cannot bind to interface %s",

1976

self.interface)

1977

else:

1978

try:

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

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

1982

except socket.error as error:

1983

if error.errno == errno.EPERM:

1984

logger.error("No permission to bind to"

1985

" interface %s", self.interface)

1986

elif error.errno == errno.ENOPROTOOPT:

1987

logger.error("SO_BINDTODEVICE not available;"

1988

" cannot bind to interface %s",

1989

self.interface)

1990

elif error.errno == errno.ENODEV:

1991

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

1992

" cannot bind", self.interface)

1993

else:

1994

raise

2496

1995

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

2497

1996

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

2498

1997

if not self.server_address[0]:

2499

1998

if self.address_family == socket.AF_INET6:

2500

any_address = "::" # in6addr_any

1999

any_address = "::" # in6addr_any

2501

2000

else:

2502

any_address = "0.0.0.0" # INADDR_ANY

2001

any_address = "0.0.0.0" # INADDR_ANY

2503

2002

self.server_address = (any_address,

2504

2003

self.server_address[1])

2505

2004

elif not self.server_address[1]:

2506

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

2005

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

2006

0)

2507

2007

# if self.interface:

2508

2008

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

2509

2009

# 0, # port

2515

2015

2516

2016

class MandosServer(IPv6_TCPServer):

2517

2017

"""Mandos server.

2518

2018

2519

2019

Attributes:

2520

2020

clients: set of Client objects

2521

2021

gnutls_priority GnuTLS priority string

2522

2022

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

2523

2524

Assumes a GLib.MainLoop event loop.

2023

2024

Assumes a gobject.MainLoop event loop.

2525

2025

"""

2526

2527

2026

def __init__(self, server_address, RequestHandlerClass,

2528

interface=None,

2529

use_ipv6=True,

2530

clients=None,

2531

gnutls_priority=None,

2532

use_dbus=True,

2533

socketfd=None):

2027

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

2028

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

2534

2029

self.enabled = False

2535

2030

self.clients = clients

2536

2031

if self.clients is None:

2539

2034

self.gnutls_priority = gnutls_priority

2540

2035

IPv6_TCPServer.__init__(self, server_address,

2541

2036

RequestHandlerClass,

2542

interface=interface,

2543

use_ipv6=use_ipv6,

2544

socketfd=socketfd)

2545

2037

interface = interface,

2038

use_ipv6 = use_ipv6,

2039

socketfd = socketfd)

2546

2040

def server_activate(self):

2547

2041

if self.enabled:

2548

2042

return socketserver.TCPServer.server_activate(self)

2549

2043

2550

2044

def enable(self):

2551

2045

self.enabled = True

2552

2046

2553

2047

def add_pipe(self, parent_pipe, proc):

2554

2048

# Call "handle_ipc" for both data and EOF events

2555

GLib.io_add_watch(

2556

parent_pipe.fileno(),

2557

GLib.IO_IN | GLib.IO_HUP,

2558

functools.partial(self.handle_ipc,

2559

parent_pipe=parent_pipe,

2560

proc=proc))

2561

2562

def handle_ipc(self, source, condition,

2563

parent_pipe=None,

2564

proc=None,

2565

client_object=None):

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2055

2056

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

2057

proc = None, client_object=None):

2566

2058

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

2567

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

2059

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

2568

2060

# Wait for other process to exit

2569

2061

proc.join()

2570

2062

return False

2571

2063

2572

2064

# Read a request from the child

2573

2065

request = parent_pipe.recv()

2574

2066

command = request[0]

2575

2067

2576

2068

if command == 'init':

2577

2069

fpr = request[1]

2578

2070

address = request[2]

2579

2580

for c in self.clients.values():

2071

2072

for c in self.clients.itervalues():

2581

2073

if c.fingerprint == fpr:

2582

2074

client = c

2583

2075

break

2590

2082

address[0])

2591

2083

parent_pipe.send(False)

2592

2084

return False

2593

2594

GLib.io_add_watch(

2595

parent_pipe.fileno(),

2596

GLib.IO_IN | GLib.IO_HUP,

2597

functools.partial(self.handle_ipc,

2598

parent_pipe=parent_pipe,

2599

proc=proc,

2600

client_object=client))

2085

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2601

2094

parent_pipe.send(True)

2602

2095

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

2603

2096

# same fileno

2606

2099

funcname = request[1]

2607

2100

args = request[2]

2608

2101

kwargs = request[3]

2609

2102

2610

2103

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

2611

2104

funcname)(*args,

2612

**kwargs)))

2613

2105

**kwargs)))

2106

2614

2107

if command == 'getattr':

2615

2108

attrname = request[1]

2616

if isinstance(client_object.__getattribute__(attrname),

2617

collections.Callable):

2618

parent_pipe.send(('function', ))

2109

if callable(client_object.__getattribute__(attrname)):

2110

parent_pipe.send(('function',))

2619

2111

else:

2620

parent_pipe.send((

2621

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

2622

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2114

2623

2115

if command == 'setattr':

2624

2116

attrname = request[1]

2625

2117

value = request[2]

2626

2118

setattr(client_object, attrname, value)

2627

2119

2628

2120

return True

2629

2121

2630

2122

2631

2123

def rfc3339_duration_to_delta(duration):

2632

2124

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

2633

2125

2634

2126

>>> rfc3339_duration_to_delta("P7D")

2635

2127

datetime.timedelta(7)

2636

2128

>>> rfc3339_duration_to_delta("PT60S")

2646

2138

>>> rfc3339_duration_to_delta("P1DT3M20S")

2647

2139

datetime.timedelta(1, 200)

2648

2140

"""

2649

2141

2650

2142

# Parsing an RFC 3339 duration with regular expressions is not

2651

2143

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

2652

2144

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

2653

2145

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

2654

2146

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

2655

2147

# avoid excessive use of external libraries.

2656

2148

2657

2149

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

2658

Token = collections.namedtuple("Token", (

2659

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

2660

# a "group" containing digits

2661

"value", # datetime.timedelta or None

2662

"followers")) # Tokens valid after this token

2150

Token = collections.namedtuple("Token",

2151

("regexp", # To match token; if

2152

# "value" is not None,

2153

# must have a "group"

2154

# containing digits

2155

"value", # datetime.timedelta or

2156

# None

2157

"followers")) # Tokens valid after

2158

# this token

2663

2159

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

2664

2160

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

2665

2161

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

2666

2162

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

2667

2163

datetime.timedelta(seconds=1),

2668

frozenset((token_end, )))

2164

frozenset((token_end,)))

2669

2165

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

2670

2166

datetime.timedelta(minutes=1),

2671

2167

frozenset((token_second, token_end)))

2687

2183

frozenset((token_month, token_end)))

2688

2184

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

2689

2185

datetime.timedelta(weeks=1),

2690

frozenset((token_end, )))

2186

frozenset((token_end,)))

2691

2187

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

2692

2188

frozenset((token_year, token_month,

2693

2189

token_day, token_time,

2694

token_week)))

2695

# Define starting values:

2696

# Value so far

2697

value = datetime.timedelta()

2190

token_week))),

2191

# Define starting values

2192

value = datetime.timedelta() # Value so far

2698

2193

found_token = None

2699

# Following valid tokens

2700

followers = frozenset((token_duration, ))

2701

# String left to parse

2702

s = duration

2194

followers = frozenset(token_duration,) # Following valid tokens

2195

s = duration # String left to parse

2703

2196

# Loop until end token is found

2704

2197

while found_token is not token_end:

2705

2198

# Search for any currently valid tokens

2721

2214

break

2722

2215

else:

2723

2216

# No currently valid tokens were found

2724

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

2725

.format(duration))

2217

raise ValueError("Invalid RFC 3339 duration")

2726

2218

# End token found

2727

2219

return value

2728

2220

2729

2221

2730

2222

def string_to_delta(interval):

2731

2223

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

2732

2224

2733

2225

>>> string_to_delta('7d')

2734

2226

datetime.timedelta(7)

2735

2227

>>> string_to_delta('60s')

2743

2235

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

2744

2236

datetime.timedelta(0, 330)

2745

2237

"""

2746

2238

2747

2239

try:

2748

2240

return rfc3339_duration_to_delta(interval)

2749

2241

except ValueError:

2750

2242

pass

2751

2243

2752

2244

timevalue = datetime.timedelta(0)

2753

2245

for s in interval.split():

2754

2246

try:

2755

suffix = s[-1]

2247

suffix = unicode(s[-1])

2756

2248

value = int(s[:-1])

2757

2249

if suffix == "d":

2758

2250

delta = datetime.timedelta(value)

2765

2257

elif suffix == "w":

2766

2258

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

2767

2259

else:

2768

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

2260

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

2261

.format(suffix))

2769

2262

except IndexError as e:

2770

2263

raise ValueError(*(e.args))

2771

2264

timevalue += delta

2772

2265

return timevalue

2773

2266

2774

2267

2775

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

2268

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

2776

2269

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

2777

2270

2778

2271

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

2779

2272

if os.fork():

2780

2273

sys.exit()

2788

2281

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

2789

2282

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

2790

2283

raise OSError(errno.ENODEV,

2791

"{} not a character device"

2284

"{0} not a character device"

2792

2285

.format(os.devnull))

2793

2286

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

2794

2287

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

2798

2291

2799

2292

2800

2293

def main():

2801

2294

2802

2295

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

2803

2296

# Parsing of options, both command line and config file

2804

2297

2805

2298

parser = argparse.ArgumentParser()

2806

2299

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

2807

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

2300

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

2808

2301

help="show version number and exit")

2809

2302

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

2810

2303

help="Bind to interface IF")

2843

2336

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

2844

2337

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

2845

2338

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

2846

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

2847

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

2848

default=None)

2849

2339

2850

2340

options = parser.parse_args()

2851

2341

2852

2342

if options.check:

2853

2343

import doctest

2854

2344

fail_count, test_count = doctest.testmod()

2855

2345

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

2856

2346

2857

2347

# Default values for config file for server-global settings

2858

server_defaults = {"interface": "",

2859

"address": "",

2860

"port": "",

2861

"debug": "False",

2862

"priority":

2863

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

2864

":+SIGN-DSA-SHA256",

2865

"servicename": "Mandos",

2866

"use_dbus": "True",

2867

"use_ipv6": "True",

2868

"debuglevel": "",

2869

"restore": "True",

2870

"socket": "",

2871

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

2872

"foreground": "False",

2873

"zeroconf": "True",

2874

}

2875

2348

server_defaults = { "interface": "",

2349

"address": "",

2350

"port": "",

2351

"debug": "False",

2352

"priority":

2353

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

2354

"servicename": "Mandos",

2355

"use_dbus": "True",

2356

"use_ipv6": "True",

2357

"debuglevel": "",

2358

"restore": "True",

2359

"socket": "",

2360

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

2361

"foreground": "False",

2362

}

2363

2876

2364

# Parse config file for server-global settings

2877

2365

server_config = configparser.SafeConfigParser(server_defaults)

2878

2366

del server_defaults

2879

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

2367

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

2368

"mandos.conf"))

2880

2369

# Convert the SafeConfigParser object to a dict

2881

2370

server_settings = server_config.defaults()

2882

2371

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

2896

2385

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

2897

2386

["socket"])

2898

2387

del server_config

2899

2388

2900

2389

# Override the settings from the config file with command line

2901

2390

# options, if set.

2902

2391

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

2903

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

2904

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

2905

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

2392

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

2393

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

2394

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

2906

2395

value = getattr(options, option)

2907

2396

if value is not None:

2908

2397

server_settings[option] = value

2909

2398

del options

2910

2399

# Force all strings to be unicode

2911

2400

for option in server_settings.keys():

2912

if isinstance(server_settings[option], bytes):

2913

server_settings[option] = (server_settings[option]

2914

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2915

2403

# Force all boolean options to be boolean

2916

2404

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

2917

"foreground", "zeroconf"):

2405

"foreground"):

2918

2406

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

2919

2407

# Debug implies foreground

2920

2408

if server_settings["debug"]:

2921

2409

server_settings["foreground"] = True

2922

2410

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

2923

2411

2924

2412

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

2925

2926

if (not server_settings["zeroconf"]

2927

and not (server_settings["port"]

2928

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

2929

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

2930

2413

2931

2414

# For convenience

2932

2415

debug = server_settings["debug"]

2933

2416

debuglevel = server_settings["debuglevel"]

2936

2419

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

2937

2420

stored_state_file)

2938

2421

foreground = server_settings["foreground"]

2939

zeroconf = server_settings["zeroconf"]

2940

2422

2941

2423

if debug:

2942

2424

initlogger(debug, logging.DEBUG)

2943

2425

else:

2946

2428

else:

2947

2429

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

2948

2430

initlogger(debug, level)

2949

2431

2950

2432

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

2951

syslogger.setFormatter(

2952

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

2953

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

2954

server_settings["servicename"])))

2955

2433

syslogger.setFormatter(logging.Formatter

2434

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

2435

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

2436

.format(server_settings

2437

["servicename"])))

2438

2956

2439

# Parse config file with clients

2957

2440

client_config = configparser.SafeConfigParser(Client

2958

2441

.client_defaults)

2959

2442

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

2960

2443

"clients.conf"))

2961

2444

2962

2445

global mandos_dbus_service

2963

2446

mandos_dbus_service = None

2964

2965

socketfd = None

2966

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

2967

socketfd = server_settings["socket"]

2968

tcp_server = MandosServer(

2969

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

2970

ClientHandler,

2971

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

2972

use_ipv6=use_ipv6,

2973

gnutls_priority=server_settings["priority"],

2974

use_dbus=use_dbus,

2975

socketfd=socketfd)

2447

2448

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

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2976

2459

if not foreground:

2977

2460

pidfilename = "/run/mandos.pid"

2978

2461

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

2979

2462

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

2980

2463

pidfile = None

2981

2464

try:

2982

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

2465

pidfile = open(pidfilename, "w")

2983

2466

except IOError as e:

2984

2467

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

2985

2468

exc_info=e)

2986

2987

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

2988

("mandos", "mandos"),

2989

("nobody", "nogroup")):

2469

2470

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

2990

2471

try:

2991

2472

uid = pwd.getpwnam(name).pw_uid

2992

gid = pwd.getpwnam(group).pw_gid

2473

gid = pwd.getpwnam(name).pw_gid

2993

2474

break

2994

2475

except KeyError:

2995

2476

continue

2999

2480

try:

3000

2481

os.setgid(gid)

3001

2482

os.setuid(uid)

3002

if debug:

3003

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

3004

gid))

3005

2483

except OSError as error:

3006

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

3007

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

3008

2484

if error.errno != errno.EPERM:

3009

2485

raise

3010

2486

3011

2487

if debug:

3012

2488

# Enable all possible GnuTLS debugging

3013

2489

3014

2490

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

3015

2491

# - GnuTLS manual

3016

gnutls.global_set_log_level(11)

3017

3018

@gnutls.log_func

2492

gnutls.library.functions.gnutls_global_set_log_level(11)

2493

2494

@gnutls.library.types.gnutls_log_func

3019

2495

def debug_gnutls(level, string):

3020

2496

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

3021

3022

gnutls.global_set_log_function(debug_gnutls)

3023

2497

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

2500

3024

2501

# Redirect stdin so all checkers get /dev/null

3025

2502

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

3026

2503

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

3027

2504

if null > 2:

3028

2505

os.close(null)

3029

2506

3030

2507

# Need to fork before connecting to D-Bus

3031

2508

if not foreground:

3032

2509

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

3033

2510

daemon()

3034

3035

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

3036

# to inform GLib that threads will be used.

3037

GLib.threads_init()

3038

2511

2512

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

2513

# need to inform gobject that threads will be used.

2514

gobject.threads_init()

2515

3039

2516

global main_loop

3040

2517

# From the Avahi example code

3041

2518

DBusGMainLoop(set_as_default=True)

3042

main_loop = GLib.MainLoop()

2519

main_loop = gobject.MainLoop()

3043

2520

bus = dbus.SystemBus()

3044

2521

# End of Avahi example code

3045

2522

if use_dbus:

3046

2523

try:

3047

2524

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

3048

bus,

3049

do_not_queue=True)

3050

old_bus_name = dbus.service.BusName(

3051

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

3052

do_not_queue=True)

3053

except dbus.exceptions.DBusException as e:

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2529

except dbus.exceptions.NameExistsException as e:

3054

2530

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

3055

2531

use_dbus = False

3056

2532

server_settings["use_dbus"] = False

3057

2533

tcp_server.use_dbus = False

3058

if zeroconf:

3059

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3060

service = AvahiServiceToSyslog(

3061

name=server_settings["servicename"],

3062

servicetype="_mandos._tcp",

3063

protocol=protocol,

3064

bus=bus)

3065

if server_settings["interface"]:

3066

service.interface = if_nametoindex(

3067

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

3068

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

2542

3069

2543

global multiprocessing_manager

3070

2544

multiprocessing_manager = multiprocessing.Manager()

3071

2545

3072

2546

client_class = Client

3073

2547

if use_dbus:

3074

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

3075

2548

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

2549

3076

2550

client_settings = Client.config_parser(client_config)

3077

2551

old_client_settings = {}

3078

2552

clients_data = {}

3079

2553

3080

2554

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

3081

2555

global wnull

3082

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

2556

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

3083

2557

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

3084

2558

# mode

3085

2559

if debug or not foreground:

3086

2560

wnull.close()

3087

2561

3088

2562

# Get client data and settings from last running state.

3089

2563

if server_settings["restore"]:

3090

2564

try:

3091

2565

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

3092

if sys.version_info.major == 2:

3093

clients_data, old_client_settings = pickle.load(

3094

stored_state)

3095

else:

3096

bytes_clients_data, bytes_old_client_settings = (

3097

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

3098

# Fix bytes to strings

3099

# clients_data

3100

# .keys()

3101

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

3102

if isinstance(key, bytes)

3103

else key): value

3104

for key, value in

3105

bytes_clients_data.items()}

3106

del bytes_clients_data

3107

for key in clients_data:

3108

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

3109

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

3110

for k, v in

3111

clients_data[key].items()}

3112

clients_data[key] = value

3113

# .client_structure

3114

value["client_structure"] = [

3115

(s.decode("utf-8")

3116

if isinstance(s, bytes)

3117

else s) for s in

3118

value["client_structure"]]

3119

# .name & .host

3120

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

3121

if isinstance(value[k], bytes):

3122

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

3123

# old_client_settings

3124

# .keys()

3125

old_client_settings = {

3126

(key.decode("utf-8")

3127

if isinstance(key, bytes)

3128

else key): value

3129

for key, value in

3130

bytes_old_client_settings.items()}

3131

del bytes_old_client_settings

3132

# .host

3133

for value in old_client_settings.values():

3134

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

3135

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

3136

.decode("utf-8"))

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

3137

2568

os.remove(stored_state_path)

3138

2569

except IOError as e:

3139

2570

if e.errno == errno.ENOENT:

3140

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

3141

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

2571

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

2572

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

3142

2573

else:

3143

2574

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

3144

2575

exc_info=e)

3145

2576

raise

3146

2577

except EOFError as e:

3147

2578

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

3148

"EOFError:",

3149

exc_info=e)

3150

2579

"EOFError:", exc_info=e)

2580

3151

2581

with PGPEngine() as pgp:

3152

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

3153

2583

# Skip removed clients

3154

2584

if client_name not in client_settings:

3155

2585

continue

3156

2586

3157

2587

# Decide which value to use after restoring saved state.

3158

2588

# We have three different values: Old config file,

3159

2589

# new config file, and saved state.

3164

2594

# For each value in new config, check if it

3165

2595

# differs from the old config value (Except for

3166

2596

# the "secret" attribute)

3167

if (name != "secret"

3168

and (value !=

3169

old_client_settings[client_name][name])):

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

3170

2600

client[name] = value

3171

2601

except KeyError:

3172

2602

pass

3173

2603

3174

2604

# Clients who has passed its expire date can still be

3175

# enabled if its last checker was successful. A Client

2605

# enabled if its last checker was successful. Clients

3176

2606

# whose checker succeeded before we stored its state is

3177

2607

# assumed to have successfully run all checkers during

3178

2608

# downtime.

3180

2610

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

3181

2611

if not client["last_checked_ok"]:

3182

2612

logger.warning(

3183

"disabling client {} - Client never "

3184

"performed a successful checker".format(

3185

client_name))

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

3186

2616

client["enabled"] = False

3187

2617

elif client["last_checker_status"] != 0:

3188

2618

logger.warning(

3189

"disabling client {} - Client last"

3190

" checker failed with error code"

3191

" {}".format(

3192

client_name,

3193

client["last_checker_status"]))

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

3194

2623

client["enabled"] = False

3195

2624

else:

3196

client["expires"] = (

3197

datetime.datetime.utcnow()

3198

+ client["timeout"])

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

3199

2628

logger.debug("Last checker succeeded,"

3200

" keeping {} enabled".format(

3201

client_name))

2629

" keeping {0} enabled"

2630

.format(client_name))

3202

2631

try:

3203

client["secret"] = pgp.decrypt(

3204

client["encrypted_secret"],

3205

client_settings[client_name]["secret"])

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

3206

2636

except PGPError:

3207

2637

# If decryption fails, we use secret from new settings

3208

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

3209

client_name))

3210

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

3211

["secret"])

3212

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

2642

3213

2643

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

3214

2644

for client_name in (set(old_client_settings)

3215

2645

- set(client_settings)):

3217

2647

for client_name in (set(client_settings)

3218

2648

- set(old_client_settings)):

3219

2649

clients_data[client_name] = client_settings[client_name]

3220

2650

3221

2651

# Create all client objects

3222

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

3223

2653

tcp_server.clients[client_name] = client_class(

3224

name=client_name,

3225

settings=client,

3226

server_settings=server_settings)

3227

2654

name = client_name, settings = client,

2655

server_settings = server_settings)

2656

3228

2657

if not tcp_server.clients:

3229

2658

logger.warning("No clients defined")

3230

2659

3231

2660

if not foreground:

3232

2661

if pidfile is not None:

3233

pid = os.getpid()

3234

2662

try:

3235

2663

with pidfile:

3236

print(pid, file=pidfile)

2664

pid = os.getpid()

2665

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

3237

2666

except IOError:

3238

2667

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

3239

2668

pidfilename, pid)

3240

2669

del pidfile

3241

2670

del pidfilename

3242

3243

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

3244

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3245

lambda: main_loop.quit() and False)

3246

2671

2672

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

2673

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

2674

3247

2675

if use_dbus:

3248

3249

@alternate_dbus_interfaces(

3250

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

3251

class MandosDBusService(DBusObjectWithObjectManager):

2676

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

2677

"se.bsnet.fukt.Mandos"})

2678

class MandosDBusService(DBusObjectWithProperties):

3252

2679

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

3253

3254

2680

def __init__(self):

3255

2681

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

3256

3257

2682

_interface = "se.recompile.Mandos"

3258

2683

2684

@dbus_interface_annotations(_interface)

2685

def _foo(self):

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2689

3259

2690

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

3260

2691

def ClientAdded(self, objpath):

3261

2692

"D-Bus signal"

3262

2693

pass

3263

2694

3264

2695

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

3265

2696

def ClientNotFound(self, fingerprint, address):

3266

2697

"D-Bus signal"

3267

2698

pass

3268

3269

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

3270

"true"})

2699

3271

2700

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

3272

2701

def ClientRemoved(self, objpath, name):

3273

2702

"D-Bus signal"

3274

2703

pass

3275

3276

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

3277

"true"})

2704

3278

2705

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

3279

2706

def GetAllClients(self):

3280

2707

"D-Bus method"

3281

return dbus.Array(c.dbus_object_path for c in

3282

tcp_server.clients.values())

3283

3284

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

3285

"true"})

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2710

tcp_server.clients.itervalues())

2711

3286

2712

@dbus.service.method(_interface,

3287

2713

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

3288

2714

def GetAllClientsWithProperties(self):

3289

2715

"D-Bus method"

3290

2716

return dbus.Dictionary(

3291

{c.dbus_object_path: c.GetAll(

3292

"se.recompile.Mandos.Client")

3293

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

2717

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

2718

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

3294

2719

signature="oa{sv}")

3295

2720

3296

2721

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

3297

2722

def RemoveClient(self, object_path):

3298

2723

"D-Bus method"

3299

for c in tcp_server.clients.values():

2724

for c in tcp_server.clients.itervalues():

3300

2725

if c.dbus_object_path == object_path:

3301

2726

del tcp_server.clients[c.name]

3302

2727

c.remove_from_connection()

3303

# Don't signal the disabling

2728

# Don't signal anything except ClientRemoved

3304

2729

c.disable(quiet=True)

3305

# Emit D-Bus signal for removal

3306

self.client_removed_signal(c)

2730

# Emit D-Bus signal

2731

self.ClientRemoved(object_path, c.name)

3307

2732

return

3308

2733

raise KeyError(object_path)

3309

2734

3310

2735

del _interface

3311

3312

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3313

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

3314

def GetManagedObjects(self):

3315

"""D-Bus method"""

3316

return dbus.Dictionary(

3317

{client.dbus_object_path:

3318

dbus.Dictionary(

3319

{interface: client.GetAll(interface)

3320

for interface in

3321

client._get_all_interface_names()})

3322

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

3323

3324

def client_added_signal(self, client):

3325

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

3326

if use_dbus:

3327

# New standard signal

3328

self.InterfacesAdded(

3329

client.dbus_object_path,

3330

dbus.Dictionary(

3331

{interface: client.GetAll(interface)

3332

for interface in

3333

client._get_all_interface_names()}))

3334

# Old signal

3335

self.ClientAdded(client.dbus_object_path)

3336

3337

def client_removed_signal(self, client):

3338

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

3339

if use_dbus:

3340

# New standard signal

3341

self.InterfacesRemoved(

3342

client.dbus_object_path,

3343

client._get_all_interface_names())

3344

# Old signal

3345

self.ClientRemoved(client.dbus_object_path,

3346

client.name)

3347

2736

3348

2737

mandos_dbus_service = MandosDBusService()

3349

3350

# Save modules to variables to exempt the modules from being

3351

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

3352

mp = multiprocessing

3353

wn = wnull

3354

2738

3355

2739

def cleanup():

3356

2740

"Cleanup function; run on exit"

3357

if zeroconf:

3358

service.cleanup()

3359

3360

mp.active_children()

3361

wn.close()

2741

service.cleanup()

2742

2743

multiprocessing.active_children()

2744

wnull.close()

3362

2745

if not (tcp_server.clients or client_settings):

3363

2746

return

3364

2747

3365

2748

# Store client before exiting. Secrets are encrypted with key

3366

2749

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

3367

2750

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

3368

2751

clients = {}

3369

2752

with PGPEngine() as pgp:

3370

for client in tcp_server.clients.values():

2753

for client in tcp_server.clients.itervalues():

3371

2754

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

3372

2755

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

3373

2756

key)

3374

2757

client_dict = {}

3375

2758

3376

2759

# A list of attributes that can not be pickled

3377

2760

# + secret.

3378

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

3379

"checker", "server_settings"}

3380

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

3381

.Object):

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

3382

2765

exclude.add(name)

3383

2766

3384

2767

client_dict["encrypted_secret"] = (client

3385

2768

.encrypted_secret)

3386

2769

for attr in client.client_structure:

3387

2770

if attr not in exclude:

3388

2771

client_dict[attr] = getattr(client, attr)

3389

2772

3390

2773

clients[client.name] = client_dict

3391

2774

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

3392

2775

3393

2776

try:

3394

with tempfile.NamedTemporaryFile(

3395

mode='wb',

3396

suffix=".pickle",

3397

prefix='clients-',

3398

dir=os.path.dirname(stored_state_path),

3399

delete=False) as stored_state:

3400

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

3401

protocol=2)

3402

tempname = stored_state.name

2777

with (tempfile.NamedTemporaryFile

2778

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

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

2781

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

2782

tempname=stored_state.name

3403

2783

os.rename(tempname, stored_state_path)

3404

2784

except (IOError, OSError) as e:

3405

2785

if not debug:

3408

2788

except NameError:

3409

2789

pass

3410

2790

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

3411

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

2791

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

3412

2792

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

3413

2793

else:

3414

2794

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

3415

2795

exc_info=e)

3416

2796

raise

3417

2797

3418

2798

# Delete all clients, and settings from config

3419

2799

while tcp_server.clients:

3420

2800

name, client = tcp_server.clients.popitem()

3421

2801

if use_dbus:

3422

2802

client.remove_from_connection()

3423

# Don't signal the disabling

2803

# Don't signal anything except ClientRemoved

3424

2804

client.disable(quiet=True)

3425

# Emit D-Bus signal for removal

3426

2805

if use_dbus:

3427

mandos_dbus_service.client_removed_signal(client)

2806

# Emit D-Bus signal

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

3428

2810

client_settings.clear()

3429

2811

3430

2812

atexit.register(cleanup)

3431

3432

for client in tcp_server.clients.values():

2813

2814

for client in tcp_server.clients.itervalues():

3433

2815

if use_dbus:

3434

# Emit D-Bus signal for adding

3435

mandos_dbus_service.client_added_signal(client)

2816

# Emit D-Bus signal

2817

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3436

2818

# Need to initiate checking of clients

3437

2819

if client.enabled:

3438

2820

client.init_checker()

3439

2821

3440

2822

tcp_server.enable()

3441

2823

tcp_server.server_activate()

3442

2824

3443

2825

# Find out what port we got

3444

if zeroconf:

3445

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

2826

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

3446

2827

if use_ipv6:

3447

2828

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

3448

2829

" flowinfo %d, scope_id %d",

3450

2831

else: # IPv4

3451

2832

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

3452

2833

*tcp_server.socket.getsockname())

3453

3454

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

3455

2834

2835

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

2836

3456

2837

try:

3457

if zeroconf:

3458

# From the Avahi example code

3459

try:

3460

service.activate()

3461

except dbus.exceptions.DBusException as error:

3462

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

3463

cleanup()

3464

sys.exit(1)

3465

# End of Avahi example code

3466

3467

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

3468

lambda *args, **kwargs:

3469

(tcp_server.handle_request

3470

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

3471

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

2846

2847

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

2848

lambda *args, **kwargs:

2849

(tcp_server.handle_request

2850

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

2851

3472

2852

logger.debug("Starting main loop")

3473

2853

main_loop.run()

3474

2854

except AvahiError as error:

3483

2863

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

3484

2864

cleanup()

3485

2865

3486

3487

2866

if __name__ == '__main__':

3488

2867

main()