/mandos/trunk : revision 878

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

from future_builtins import *

37

try:

38

from future_builtins import *

39

except ImportError:

40

pass

38

41

39

import SocketServer as socketserver

42

try:

43

import SocketServer as socketserver

44

except ImportError:

45

import socketserver

40

46

import socket

41

47

import argparse

42

48

import datetime

43

49

import errno

44

import gnutls.crypto

45

import gnutls.connection

46

import gnutls.errors

47

import gnutls.library.functions

48

import gnutls.library.constants

49

import gnutls.library.types

50

import ConfigParser as configparser

50

try:

51

import ConfigParser as configparser

52

except ImportError:

53

import configparser

51

54

import sys

52

55

import re

53

56

import os

62

65

import struct

63

66

import fcntl

64

67

import functools

65

import cPickle as pickle

68

try:

69

import cPickle as pickle

70

except ImportError:

71

import pickle

66

72

import multiprocessing

67

73

import types

68

74

import binascii

69

75

import tempfile

70

76

import itertools

71

77

import collections

78

import codecs

72

79

73

80

import dbus

74

81

import dbus.service

75

import gobject

76

import avahi

82

from gi.repository import GLib

77

83

from dbus.mainloop.glib import DBusGMainLoop

78

84

import ctypes

79

85

import ctypes.util

80

86

import xml.dom.minidom

81

87

import inspect

82

88

89

# Try to find the value of SO_BINDTODEVICE:

83

90

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:

84

93

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

85

94

except AttributeError:

86

95

try:

96

# This is where SO_BINDTODEVICE was up to and including Python

97

# 2.6, and also 3.2:

87

98

from IN import SO_BINDTODEVICE

88

99

except ImportError:

89

SO_BINDTODEVICE = None

90

91

version = "1.6.6"

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 = "1.7.12"

92

118

stored_state_file = "clients.pickle"

93

119

94

120

logger = logging.getLogger()

95

121

syslogger = None

96

122

97

123

try:

98

if_nametoindex = (ctypes.cdll.LoadLibrary

99

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

100

.if_nametoindex)

124

if_nametoindex = ctypes.cdll.LoadLibrary(

125

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

101

126

except (OSError, AttributeError):

127

102

128

def if_nametoindex(interface):

103

129

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

104

130

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

105

131

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

106

132

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

133

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

134

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

111

135

return interface_index

112

136

113

137

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

114

154

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

115

155

"""init logger and add loglevel"""

116

156

117

157

global syslogger

118

syslogger = (logging.handlers.SysLogHandler

119

(facility =

120

logging.handlers.SysLogHandler.LOG_DAEMON,

121

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

158

syslogger = (logging.handlers.SysLogHandler(

159

facility=logging.handlers.SysLogHandler.LOG_DAEMON,

160

address="/dev/log"))

122

161

syslogger.setFormatter(logging.Formatter

123

162

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

124

163

' %(message)s'))

125

164

logger.addHandler(syslogger)

126

165

127

166

if debug:

128

167

console = logging.StreamHandler()

129

168

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

141

180

142

181

class PGPEngine(object):

143

182

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

183

144

184

def __init__(self):

145

185

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

146

197

self.gnupgargs = ['--batch',

147

'--home', self.tempdir,

198

'--homedir', self.tempdir,

148

199

'--force-mdc',

149

'--quiet',

150

'--no-use-agent']

151

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

152

205

def __enter__(self):

153

206

return self

154

207

155

208

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

156

209

self._cleanup()

157

210

return False

158

211

159

212

def __del__(self):

160

213

self._cleanup()

161

214

162

215

def _cleanup(self):

163

216

if self.tempdir is not None:

164

217

# Delete contents of tempdir

165

218

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

166

topdown = False):

219

topdown=False):

167

220

for filename in files:

168

221

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

169

222

for dirname in dirs:

171

224

# Remove tempdir

172

225

os.rmdir(self.tempdir)

173

226

self.tempdir = None

174

227

175

228

def password_encode(self, password):

176

229

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

177

230

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

182

235

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

183

236

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

184

237

return encoded

185

238

186

239

def encrypt(self, data, password):

187

240

passphrase = self.password_encode(password)

188

with tempfile.NamedTemporaryFile(dir=self.tempdir

189

) as passfile:

241

with tempfile.NamedTemporaryFile(

242

dir=self.tempdir) as passfile:

190

243

passfile.write(passphrase)

191

244

passfile.flush()

192

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

245

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

193

246

'--passphrase-file',

194

247

passfile.name]

195

248

+ self.gnupgargs,

196

stdin = subprocess.PIPE,

197

stdout = subprocess.PIPE,

198

stderr = subprocess.PIPE)

199

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

249

stdin=subprocess.PIPE,

250

stdout=subprocess.PIPE,

251

stderr=subprocess.PIPE)

252

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

200

253

if proc.returncode != 0:

201

254

raise PGPError(err)

202

255

return ciphertext

203

256

204

257

def decrypt(self, data, password):

205

258

passphrase = self.password_encode(password)

206

with tempfile.NamedTemporaryFile(dir = self.tempdir

207

) as passfile:

259

with tempfile.NamedTemporaryFile(

260

dir=self.tempdir) as passfile:

208

261

passfile.write(passphrase)

209

262

passfile.flush()

210

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

263

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

211

264

'--passphrase-file',

212

265

passfile.name]

213

266

+ self.gnupgargs,

214

stdin = subprocess.PIPE,

215

stdout = subprocess.PIPE,

216

stderr = subprocess.PIPE)

217

decrypted_plaintext, err = proc.communicate(input

218

= data)

267

stdin=subprocess.PIPE,

268

stdout=subprocess.PIPE,

269

stderr=subprocess.PIPE)

270

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

219

271

if proc.returncode != 0:

220

272

raise PGPError(err)

221

273

return decrypted_plaintext

222

274

223

275

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

224

303

class AvahiError(Exception):

225

304

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

226

305

self.value = value

227

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

228

def __unicode__(self):

229

return unicode(repr(self.value))

306

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

307

**kwargs)

308

230

309

231

310

class AvahiServiceError(AvahiError):

232

311

pass

233

312

313

234

314

class AvahiGroupError(AvahiError):

235

315

pass

236

316

237

317

238

318

class AvahiService(object):

239

319

"""An Avahi (Zeroconf) service.

240

320

241

321

Attributes:

242

322

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

243

323

Used to optionally bind to the specified interface.

255

335

server: D-Bus Server

256

336

bus: dbus.SystemBus()

257

337

"""

258

259

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

260

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

261

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

262

protocol = avahi.PROTO_UNSPEC, bus = None):

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):

263

350

self.interface = interface

264

351

self.name = name

265

352

self.type = servicetype

274

361

self.server = None

275

362

self.bus = bus

276

363

self.entry_group_state_changed_match = None

277

278

def rename(self):

364

365

def rename(self, remove=True):

279

366

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

280

367

if self.rename_count >= self.max_renames:

281

368

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

282

369

" after %i retries, exiting.",

283

370

self.rename_count)

284

371

raise AvahiServiceError("Too many renames")

285

self.name = unicode(self.server

286

.GetAlternativeServiceName(self.name))

372

self.name = str(

373

self.server.GetAlternativeServiceName(self.name))

374

self.rename_count += 1

287

375

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

288

376

self.name)

289

self.remove()

377

if remove:

378

self.remove()

290

379

try:

291

380

self.add()

292

381

except dbus.exceptions.DBusException as error:

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

297

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

298

391

def remove(self):

299

392

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

300

393

if self.entry_group_state_changed_match is not None:

302

395

self.entry_group_state_changed_match = None

303

396

if self.group is not None:

304

397

self.group.Reset()

305

398

306

399

def add(self):

307

400

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

308

401

self.remove()

325

418

dbus.UInt16(self.port),

326

419

avahi.string_array_to_txt_array(self.TXT))

327

420

self.group.Commit()

328

421

329

422

def entry_group_state_changed(self, state, error):

330

423

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

331

424

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

332

425

333

426

if state == avahi.ENTRY_GROUP_ESTABLISHED:

334

427

logger.debug("Zeroconf service established.")

335

428

elif state == avahi.ENTRY_GROUP_COLLISION:

337

430

self.rename()

338

431

elif state == avahi.ENTRY_GROUP_FAILURE:

339

432

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

340

unicode(error))

341

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

342

.format(error))

343

433

str(error))

434

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

435

344

436

def cleanup(self):

345

437

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

346

438

if self.group is not None:

351

443

pass

352

444

self.group = None

353

445

self.remove()

354

446

355

447

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

356

448

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

357

449

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

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

364

"Zeroconf server failure" }

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

}

365

456

if state in bad_states:

366

457

if bad_states[state] is not None:

367

458

if error is None:

370

461

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

371

462

self.cleanup()

372

463

elif state == avahi.SERVER_RUNNING:

373

self.add()

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)

374

476

else:

375

477

if error is None:

376

478

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

377

479

else:

378

480

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

379

481

380

482

def activate(self):

381

483

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

382

484

if self.server is None:

386

488

follow_name_owner_changes=True),

387

489

avahi.DBUS_INTERFACE_SERVER)

388

490

self.server.connect_to_signal("StateChanged",

389

self.server_state_changed)

491

self.server_state_changed)

390

492

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

391

493

392

494

393

495

class AvahiServiceToSyslog(AvahiService):

394

def rename(self):

496

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

395

497

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

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

498

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

499

syslogger.setFormatter(logging.Formatter(

500

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

501

.format(self.name)))

401

502

return ret

402

503

403

504

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

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.util.find_library("gnutls")

511

if library is None:

512

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

513

_library = ctypes.cdll.LoadLibrary(library)

514

del library

515

_need_version = b"3.3.0"

516

517

def __init__(self):

518

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

519

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

520

# happens.

521

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

522

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

523

.format(self._need_version))

524

525

# Unless otherwise indicated, the constants and types below are

526

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

527

528

# Constants

529

E_SUCCESS = 0

530

E_INTERRUPTED = -52

531

E_AGAIN = -28

532

CRT_OPENPGP = 2

533

CLIENT = 2

534

SHUT_RDWR = 0

535

CRD_CERTIFICATE = 1

536

E_NO_CERTIFICATE_FOUND = -49

537

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

538

539

# Types

540

class session_int(ctypes.Structure):

541

_fields_ = []

542

session_t = ctypes.POINTER(session_int)

543

544

class certificate_credentials_st(ctypes.Structure):

545

_fields_ = []

546

certificate_credentials_t = ctypes.POINTER(

547

certificate_credentials_st)

548

certificate_type_t = ctypes.c_int

549

550

class datum_t(ctypes.Structure):

551

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

552

('size', ctypes.c_uint)]

553

554

class openpgp_crt_int(ctypes.Structure):

555

_fields_ = []

556

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

557

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

558

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

559

credentials_type_t = ctypes.c_int

560

transport_ptr_t = ctypes.c_void_p

561

close_request_t = ctypes.c_int

562

563

# Exceptions

564

class Error(Exception):

565

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

566

# exception might be raised from within GnuTLS.__init__,

567

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

568

# global variable has happened.

569

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

570

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

571

# code is passed, convert it to a string with

572

# gnutls.strerror()

573

self.code = code

574

if message is None and code is not None:

575

message = GnuTLS.strerror(code)

576

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

577

message, *args)

578

579

class CertificateSecurityError(Error):

580

pass

581

582

# Classes

583

class Credentials(object):

584

def __init__(self):

585

self._c_object = gnutls.certificate_credentials_t()

586

gnutls.certificate_allocate_credentials(

587

ctypes.byref(self._c_object))

588

self.type = gnutls.CRD_CERTIFICATE

589

590

def __del__(self):

591

gnutls.certificate_free_credentials(self._c_object)

592

593

class ClientSession(object):

594

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

595

self._c_object = gnutls.session_t()

596

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

597

gnutls.set_default_priority(self._c_object)

598

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

599

gnutls.handshake_set_private_extensions(self._c_object,

600

True)

601

self.socket = socket

602

if credentials is None:

603

credentials = gnutls.Credentials()

604

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

605

ctypes.cast(credentials._c_object,

606

ctypes.c_void_p))

607

self.credentials = credentials

608

609

def __del__(self):

610

gnutls.deinit(self._c_object)

611

612

def handshake(self):

613

return gnutls.handshake(self._c_object)

614

615

def send(self, data):

616

data = bytes(data)

617

data_len = len(data)

618

while data_len > 0:

619

data_len -= gnutls.record_send(self._c_object,

620

data[-data_len:],

621

data_len)

622

623

def bye(self):

624

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

625

626

# Error handling functions

627

def _error_code(result):

628

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

629

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

630

if result >= 0:

631

return result

632

if result == gnutls.E_NO_CERTIFICATE_FOUND:

633

raise gnutls.CertificateSecurityError(code=result)

634

raise gnutls.Error(code=result)

635

636

def _retry_on_error(result, func, arguments):

637

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

638

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

639

while result < 0:

640

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

641

return _error_code(result)

642

result = func(*arguments)

643

return result

644

645

# Unless otherwise indicated, the function declarations below are

646

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

647

648

# Functions

649

priority_set_direct = _library.gnutls_priority_set_direct

650

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

651

ctypes.POINTER(ctypes.c_char_p)]

652

priority_set_direct.restype = _error_code

653

654

init = _library.gnutls_init

655

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

656

init.restype = _error_code

657

658

set_default_priority = _library.gnutls_set_default_priority

659

set_default_priority.argtypes = [session_t]

660

set_default_priority.restype = _error_code

661

662

record_send = _library.gnutls_record_send

663

record_send.argtypes = [session_t, ctypes.c_void_p,

664

ctypes.c_size_t]

665

record_send.restype = ctypes.c_ssize_t

666

record_send.errcheck = _retry_on_error

667

668

certificate_allocate_credentials = (

669

_library.gnutls_certificate_allocate_credentials)

670

certificate_allocate_credentials.argtypes = [

671

ctypes.POINTER(certificate_credentials_t)]

672

certificate_allocate_credentials.restype = _error_code

673

674

certificate_free_credentials = (

675

_library.gnutls_certificate_free_credentials)

676

certificate_free_credentials.argtypes = [

677

certificate_credentials_t]

678

certificate_free_credentials.restype = None

679

680

handshake_set_private_extensions = (

681

_library.gnutls_handshake_set_private_extensions)

682

handshake_set_private_extensions.argtypes = [session_t,

683

ctypes.c_int]

684

handshake_set_private_extensions.restype = None

685

686

credentials_set = _library.gnutls_credentials_set

687

credentials_set.argtypes = [session_t, credentials_type_t,

688

ctypes.c_void_p]

689

credentials_set.restype = _error_code

690

691

strerror = _library.gnutls_strerror

692

strerror.argtypes = [ctypes.c_int]

693

strerror.restype = ctypes.c_char_p

694

695

certificate_type_get = _library.gnutls_certificate_type_get

696

certificate_type_get.argtypes = [session_t]

697

certificate_type_get.restype = _error_code

698

699

certificate_get_peers = _library.gnutls_certificate_get_peers

700

certificate_get_peers.argtypes = [session_t,

701

ctypes.POINTER(ctypes.c_uint)]

702

certificate_get_peers.restype = ctypes.POINTER(datum_t)

703

704

global_set_log_level = _library.gnutls_global_set_log_level

705

global_set_log_level.argtypes = [ctypes.c_int]

706

global_set_log_level.restype = None

707

708

global_set_log_function = _library.gnutls_global_set_log_function

709

global_set_log_function.argtypes = [log_func]

710

global_set_log_function.restype = None

711

712

deinit = _library.gnutls_deinit

713

deinit.argtypes = [session_t]

714

deinit.restype = None

715

716

handshake = _library.gnutls_handshake

717

handshake.argtypes = [session_t]

718

handshake.restype = _error_code

719

handshake.errcheck = _retry_on_error

720

721

transport_set_ptr = _library.gnutls_transport_set_ptr

722

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

723

transport_set_ptr.restype = None

724

725

bye = _library.gnutls_bye

726

bye.argtypes = [session_t, close_request_t]

727

bye.restype = _error_code

728

bye.errcheck = _retry_on_error

729

730

check_version = _library.gnutls_check_version

731

check_version.argtypes = [ctypes.c_char_p]

732

check_version.restype = ctypes.c_char_p

733

734

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

735

736

openpgp_crt_init = _library.gnutls_openpgp_crt_init

737

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

738

openpgp_crt_init.restype = _error_code

739

740

openpgp_crt_import = _library.gnutls_openpgp_crt_import

741

openpgp_crt_import.argtypes = [openpgp_crt_t,

742

ctypes.POINTER(datum_t),

743

openpgp_crt_fmt_t]

744

openpgp_crt_import.restype = _error_code

745

746

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

747

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

748

ctypes.POINTER(ctypes.c_uint)]

749

openpgp_crt_verify_self.restype = _error_code

750

751

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

752

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

753

openpgp_crt_deinit.restype = None

754

755

openpgp_crt_get_fingerprint = (

756

_library.gnutls_openpgp_crt_get_fingerprint)

757

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

758

ctypes.c_void_p,

759

ctypes.POINTER(

760

ctypes.c_size_t)]

761

openpgp_crt_get_fingerprint.restype = _error_code

762

763

# Remove non-public functions

764

del _error_code, _retry_on_error

765

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

766

gnutls = GnuTLS()

767

768

769

def call_pipe(connection, # : multiprocessing.Connection

770

func, *args, **kwargs):

771

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

772

773

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

774

return value on the provided multiprocessing.Connection.

775

"""

776

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

777

connection.close()

409

778

410

779

411

780

class Client(object):

412

781

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

413

782

414

783

Attributes:

415

784

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

416

785

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

418

787

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

419

788

to see if the client lives.

420

789

'None' if no process is running.

421

checker_callback_tag: a gobject event source tag, or None

790

checker_callback_tag: a GLib event source tag, or None

422

791

checker_command: string; External command which is run to check

423

792

if client lives. %() expansions are done at

424

793

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

425

794

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

426

checker_initiator_tag: a gobject event source tag, or None

795

checker_initiator_tag: a GLib event source tag, or None

427

796

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

428

797

client_structure: Object describing what attributes a client has

429

798

and is used for storing the client at exit

430

799

current_checker_command: string; current running checker_command

431

disable_initiator_tag: a gobject event source tag, or None

800

disable_initiator_tag: a GLib event source tag, or None

432

801

enabled: bool()

433

802

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

434

803

uniquely identify the client

439

808

last_checker_status: integer between 0 and 255 reflecting exit

440

809

status of last checker. -1 reflects crashed

441

810

checker, -2 means no checker completed yet.

811

last_checker_signal: The signal which killed the last checker, if

812

last_checker_status is -1

442

813

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

443

814

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

444

815

D-Bus identifiers

451

822

disabled, or None

452

823

server_settings: The server_settings dict from main()

453

824

"""

454

825

455

826

runtime_expansions = ("approval_delay", "approval_duration",

456

827

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

457

828

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

458

829

"last_approval_request", "last_checked_ok",

459

830

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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

485

831

client_defaults = {

832

"timeout": "PT5M",

833

"extended_timeout": "PT15M",

834

"interval": "PT2M",

835

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

836

"host": "",

837

"approval_delay": "PT0S",

838

"approval_duration": "PT1S",

839

"approved_by_default": "True",

840

"enabled": "True",

841

}

842

486

843

@staticmethod

487

844

def config_parser(config):

488

845

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

495

852

for client_name in config.sections():

496

853

section = dict(config.items(client_name))

497

854

client = settings[client_name] = {}

498

855

499

856

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

500

857

# Reformat values from string types to Python types

501

858

client["approved_by_default"] = config.getboolean(

502

859

client_name, "approved_by_default")

503

860

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

504

861

"enabled")

505

862

863

# Uppercase and remove spaces from fingerprint for later

864

# comparison purposes with return value from the

865

# fingerprint() function

506

866

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

507

867

.replace(" ", ""))

508

868

if "secret" in section:

509

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

869

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

870

.encode("utf-8"),

871

"base64")

510

872

elif "secfile" in section:

511

873

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

512

874

(section["secfile"])),

513

875

"rb") as secfile:

514

876

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

515

877

else:

516

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

878

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

517

879

.format(section))

518

880

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

519

881

client["extended_timeout"] = string_to_delta(

527

889

client["last_approval_request"] = None

528

890

client["last_checked_ok"] = None

529

891

client["last_checker_status"] = -2

530

892

531

893

return settings

532

533

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

894

895

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

534

896

self.name = name

535

897

if server_settings is None:

536

898

server_settings = {}

537

899

self.server_settings = server_settings

538

900

# adding all client settings

539

for setting, value in settings.iteritems():

901

for setting, value in settings.items():

540

902

setattr(self, setting, value)

541

903

542

904

if self.enabled:

543

905

if not hasattr(self, "last_enabled"):

544

906

self.last_enabled = datetime.datetime.utcnow()

548

910

else:

549

911

self.last_enabled = None

550

912

self.expires = None

551

913

552

914

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

556

915

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

557

916

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

558

917

datetime.datetime.utcnow())

559

918

560

919

# attributes specific for this server instance

561

920

self.checker = None

562

921

self.checker_initiator_tag = None

565

924

self.current_checker_command = None

566

925

self.approved = None

567

926

self.approvals_pending = 0

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

927

self.changedstate = multiprocessing_manager.Condition(

928

multiprocessing_manager.Lock())

929

self.client_structure = [attr

930

for attr in self.__dict__.keys()

573

931

if not attr.startswith("_")]

574

932

self.client_structure.append("client_structure")

575

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

933

934

for name, t in inspect.getmembers(

935

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

580

936

if not name.startswith("_"):

581

937

self.client_structure.append(name)

582

938

583

939

# Send notice to process children that client state has changed

584

940

def send_changedstate(self):

585

941

with self.changedstate:

586

942

self.changedstate.notify_all()

587

943

588

944

def enable(self):

589

945

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

590

946

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

595

951

self.last_enabled = datetime.datetime.utcnow()

596

952

self.init_checker()

597

953

self.send_changedstate()

598

954

599

955

def disable(self, quiet=True):

600

956

"""Disable this client."""

601

957

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

603

959

if not quiet:

604

960

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

605

961

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

606

gobject.source_remove(self.disable_initiator_tag)

962

GLib.source_remove(self.disable_initiator_tag)

607

963

self.disable_initiator_tag = None

608

964

self.expires = None

609

965

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

610

gobject.source_remove(self.checker_initiator_tag)

966

GLib.source_remove(self.checker_initiator_tag)

611

967

self.checker_initiator_tag = None

612

968

self.stop_checker()

613

969

self.enabled = False

614

970

if not quiet:

615

971

self.send_changedstate()

616

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

972

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

617

973

return False

618

974

619

975

def __del__(self):

620

976

self.disable()

621

977

622

978

def init_checker(self):

623

979

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

624

980

# and every interval from then on.

625

981

if self.checker_initiator_tag is not None:

626

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

982

GLib.source_remove(self.checker_initiator_tag)

983

self.checker_initiator_tag = GLib.timeout_add(

984

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

985

self.start_checker)

630

986

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

631

987

if self.disable_initiator_tag is not None:

632

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

988

GLib.source_remove(self.disable_initiator_tag)

989

self.disable_initiator_tag = GLib.timeout_add(

990

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

636

991

# Also start a new checker *right now*.

637

992

self.start_checker()

638

639

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

993

994

def checker_callback(self, source, condition, connection,

995

command):

640

996

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

641

997

self.checker_callback_tag = None

642

998

self.checker = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

999

# Read return code from connection (see call_pipe)

1000

returncode = connection.recv()

1001

connection.close()

1002

1003

if returncode >= 0:

1004

self.last_checker_status = returncode

1005

self.last_checker_signal = None

645

1006

if self.last_checker_status == 0:

646

1007

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

647

1008

vars(self))

648

1009

self.checked_ok()

649

1010

else:

650

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

651

vars(self))

1011

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

652

1012

else:

653

1013

self.last_checker_status = -1

1014

self.last_checker_signal = -returncode

654

1015

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

655

1016

vars(self))

656

1017

return False

1018

657

1019

def checked_ok(self):

658

1020

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

659

1021

self.last_checked_ok = datetime.datetime.utcnow()

660

1022

self.last_checker_status = 0

1023

self.last_checker_signal = None

661

1024

self.bump_timeout()

662

1025

663

1026

def bump_timeout(self, timeout=None):

664

1027

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

665

1028

if timeout is None:

666

1029

timeout = self.timeout

667

1030

if self.disable_initiator_tag is not None:

668

gobject.source_remove(self.disable_initiator_tag)

1031

GLib.source_remove(self.disable_initiator_tag)

669

1032

self.disable_initiator_tag = None

670

1033

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

1034

self.disable_initiator_tag = GLib.timeout_add(

1035

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

674

1036

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

675

1037

676

1038

def need_approval(self):

677

1039

self.last_approval_request = datetime.datetime.utcnow()

678

1040

679

1041

def start_checker(self):

680

1042

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

681

1043

682

1044

If a checker already exists, leave it running and do

683

1045

nothing."""

684

1046

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

689

1051

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

690

1052

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

691

1053

# should be.

692

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

1054

1055

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

1056

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

1057

self.checker.join()

1058

self.checker = None

707

1059

# Start a new checker if needed

708

1060

if self.checker is None:

709

1061

# Escape attributes for the shell

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

1062

escaped_attrs = {

1063

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

1064

for attr in self.runtime_expansions}

714

1065

try:

715

1066

command = self.checker_command % escaped_attrs

716

1067

except TypeError as error:

717

1068

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

718

self.checker_command, exc_info=error)

719

return True # Try again later

1069

self.checker_command,

1070

exc_info=error)

1071

return True # Try again later

720

1072

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

742

exc_info=error)

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

762

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

1073

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

1074

self.name)

1075

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

1076

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

1077

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

1078

# always replaced by /dev/null.)

1079

# The exception is when not debugging but nevertheless

1080

# running in the foreground; use the previously

1081

# created wnull.

1082

popen_args = {"close_fds": True,

1083

"shell": True,

1084

"cwd": "/"}

1085

if (not self.server_settings["debug"]

1086

and self.server_settings["foreground"]):

1087

popen_args.update({"stdout": wnull,

1088

"stderr": wnull})

1089

pipe = multiprocessing.Pipe(duplex=False)

1090

self.checker = multiprocessing.Process(

1091

target=call_pipe,

1092

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

1093

kwargs=popen_args)

1094

self.checker.start()

1095

self.checker_callback_tag = GLib.io_add_watch(

1096

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

1097

self.checker_callback, pipe[0], command)

1098

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

763

1099

return True

764

1100

765

1101

def stop_checker(self):

766

1102

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

767

1103

if self.checker_callback_tag:

768

gobject.source_remove(self.checker_callback_tag)

1104

GLib.source_remove(self.checker_callback_tag)

769

1105

self.checker_callback_tag = None

770

1106

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

771

1107

return

772

1108

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

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

1109

self.checker.terminate()

781

1110

self.checker = None

782

1111

783

1112

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

1113

def dbus_service_property(dbus_interface,

1114

signature="v",

1115

access="readwrite",

1116

byte_arrays=False):

786

1117

"""Decorators for marking methods of a DBusObjectWithProperties to

787

1118

become properties on the D-Bus.

788

1119

789

1120

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

790

1121

and with one argument by "Set".

791

1122

792

1123

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

793

1124

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

794

1125

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

797

1128

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

798

1129

if byte_arrays and signature != "ay":

799

1130

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

800

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

1131

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

1132

801

1133

def decorator(func):

802

1134

func._dbus_is_property = True

803

1135

func._dbus_interface = dbus_interface

806

1138

func._dbus_name = func.__name__

807

1139

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

808

1140

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

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1141

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

810

1142

return func

1143

811

1144

return decorator

812

1145

813

1146

814

1147

def dbus_interface_annotations(dbus_interface):

815

1148

"""Decorator for marking functions returning interface annotations

816

1149

817

1150

Usage:

818

1151

819

1152

@dbus_interface_annotations("org.example.Interface")

820

1153

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

821

1154

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

822

1155

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

823

1156

"false"}

824

1157

"""

1158

825

1159

def decorator(func):

826

1160

func._dbus_is_interface = True

827

1161

func._dbus_interface = dbus_interface

828

1162

func._dbus_name = dbus_interface

829

1163

return func

1164

830

1165

return decorator

831

1166

832

1167

833

1168

def dbus_annotations(annotations):

834

1169

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

835

1170

Usage:

836

1171

1172

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

1173

"org.freedesktop.DBus.Property."

1174

"EmitsChangedSignal": "false"})

837

1175

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

838

1176

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

842

1177

def Property_dbus_property(self):

843

1178

return dbus.Boolean(False)

1179

1180

See also the DBusObjectWithAnnotations class.

844

1181

"""

1182

845

1183

def decorator(func):

846

1184

func._dbus_annotations = annotations

847

1185

return func

1186

848

1187

return decorator

849

1188

850

1189

851

1190

class DBusPropertyException(dbus.exceptions.DBusException):

852

1191

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

853

1192

"""

854

def __unicode__(self):

855

return unicode(str(self))

1193

pass

856

1194

857

1195

858

1196

class DBusPropertyAccessException(DBusPropertyException):

867

1205

pass

868

1206

869

1207

870

class DBusObjectWithProperties(dbus.service.Object):

871

"""A D-Bus object with properties.

872

873

Classes inheriting from this can use the dbus_service_property

874

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

875

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

1208

class DBusObjectWithAnnotations(dbus.service.Object):

1209

"""A D-Bus object with annotations.

1210

1211

Classes inheriting from this can use the dbus_annotations

1212

decorator to add annotations to methods or signals.

876

1213

"""

877

1214

878

1215

@staticmethod

879

1216

def _is_dbus_thing(thing):

880

1217

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

881

1218

882

1219

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

883

1220

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

884

1221

"""

885

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

1222

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

886

1223

False)

887

1224

888

1225

def _get_all_dbus_things(self, thing):

889

1226

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

890

1227

"""

891

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

892

name),

1228

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

893

1229

athing.__get__(self))

894

1230

for cls in self.__class__.__mro__

895

1231

for name, athing in

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

898

1232

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

1233

1234

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1235

out_signature="s",

1236

path_keyword='object_path',

1237

connection_keyword='connection')

1238

def Introspect(self, object_path, connection):

1239

"""Overloading of standard D-Bus method.

1240

1241

Inserts annotation tags on methods and signals.

1242

"""

1243

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

1244

connection)

1245

try:

1246

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

1247

1248

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

1249

# Add annotation tags

1250

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

1251

for tag in if_tag.getElementsByTagName(typ):

1252

annots = dict()

1253

for name, prop in (self.

1254

_get_all_dbus_things(typ)):

1255

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

1256

and prop._dbus_interface

1257

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

1258

annots.update(getattr(

1259

prop, "_dbus_annotations", {}))

1260

for name, value in annots.items():

1261

ann_tag = document.createElement(

1262

"annotation")

1263

ann_tag.setAttribute("name", name)

1264

ann_tag.setAttribute("value", value)

1265

tag.appendChild(ann_tag)

1266

# Add interface annotation tags

1267

for annotation, value in dict(

1268

itertools.chain.from_iterable(

1269

annotations().items()

1270

for name, annotations

1271

in self._get_all_dbus_things("interface")

1272

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

1273

)).items():

1274

ann_tag = document.createElement("annotation")

1275

ann_tag.setAttribute("name", annotation)

1276

ann_tag.setAttribute("value", value)

1277

if_tag.appendChild(ann_tag)

1278

# Fix argument name for the Introspect method itself

1279

if (if_tag.getAttribute("name")

1280

== dbus.INTROSPECTABLE_IFACE):

1281

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

1282

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

1283

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

1284

if (arg.getAttribute("direction")

1285

== "out"):

1286

arg.setAttribute("name",

1287

"xml_data")

1288

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

1289

document.unlink()

1290

except (AttributeError, xml.dom.DOMException,

1291

xml.parsers.expat.ExpatError) as error:

1292

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

1293

exc_info=error)

1294

return xmlstring

1295

1296

1297

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1298

"""A D-Bus object with properties.

1299

1300

Classes inheriting from this can use the dbus_service_property

1301

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

1302

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

1303

"""

1304

899

1305

def _get_dbus_property(self, interface_name, property_name):

900

1306

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

901

1307

property with the specified name and interface.

902

1308

"""

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

1309

for cls in self.__class__.__mro__:

1310

for name, value in inspect.getmembers(

1311

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

907

1312

if (value._dbus_name == property_name

908

1313

and value._dbus_interface == interface_name):

909

1314

return value.__get__(self)

910

1315

911

1316

# No such property

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

915

916

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

1317

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

1318

self.dbus_object_path, interface_name, property_name))

1319

1320

@classmethod

1321

def _get_all_interface_names(cls):

1322

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

1323

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

1324

"_dbus_interface", None)

1325

for x in (inspect.getmro(cls))

1326

for attr in dir(x))

1327

if name is not None)

1328

1329

@dbus.service.method(dbus.PROPERTIES_IFACE,

1330

in_signature="ss",

917

1331

out_signature="v")

918

1332

def Get(self, interface_name, property_name):

919

1333

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

925

1339

if not hasattr(value, "variant_level"):

926

1340

return value

927

1341

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

928

1342

929

1343

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

930

1344

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

931

1345

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

938

1352

# signatures other than "ay".

939

1353

if prop._dbus_signature != "ay":

940

1354

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

941

"'ay' signature {0!r}"

1355

"'ay' signature {!r}"

942

1356

.format(prop._dbus_signature))

943

1357

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

944

1358

for byte in value))

945

1359

prop(value)

946

947

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

1360

1361

@dbus.service.method(dbus.PROPERTIES_IFACE,

1362

in_signature="s",

948

1363

out_signature="a{sv}")

949

1364

def GetAll(self, interface_name):

950

1365

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

951

1366

standard.

952

1367

953

1368

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

954

1369

"""

955

1370

properties = {}

965

1380

if not hasattr(value, "variant_level"):

966

1381

properties[name] = value

967

1382

continue

968

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

969

value.variant_level+1)

1383

properties[name] = type(value)(

1384

value, variant_level=value.variant_level + 1)

970

1385

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

971

1386

1387

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

1388

def PropertiesChanged(self, interface_name, changed_properties,

1389

invalidated_properties):

1390

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

1391

standard.

1392

"""

1393

pass

1394

972

1395

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

973

1396

out_signature="s",

974

1397

path_keyword='object_path',

975

1398

connection_keyword='connection')

976

1399

def Introspect(self, object_path, connection):

977

1400

"""Overloading of standard D-Bus method.

978

1401

979

1402

Inserts property tags and interface annotation tags.

980

1403

"""

981

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

982

connection)

1404

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1405

object_path,

1406

connection)

983

1407

try:

984

1408

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

1409

985

1410

def make_tag(document, name, prop):

986

1411

e = document.createElement("property")

987

1412

e.setAttribute("name", name)

988

1413

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

989

1414

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

990

1415

return e

1416

991

1417

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

992

1418

# Add property tags

993

1419

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

996

1422

if prop._dbus_interface

997

1423

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

998

1424

if_tag.appendChild(tag)

999

# Add annotation tags

1000

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

1001

for tag in if_tag.getElementsByTagName(typ):

1002

annots = dict()

1003

for name, prop in (self.

1004

_get_all_dbus_things(typ)):

1005

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

1006

and prop._dbus_interface

1007

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1013

ann_tag = document.createElement(

1014

"annotation")

1015

ann_tag.setAttribute("name", name)

1016

ann_tag.setAttribute("value", value)

1017

tag.appendChild(ann_tag)

1018

# Add interface annotation tags

1019

for annotation, value in dict(

1020

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1024

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

1025

)).iteritems():

1026

ann_tag = document.createElement("annotation")

1027

ann_tag.setAttribute("name", annotation)

1028

ann_tag.setAttribute("value", value)

1029

if_tag.appendChild(ann_tag)

1425

# Add annotation tags for properties

1426

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

1427

annots = dict()

1428

for name, prop in self._get_all_dbus_things(

1429

"property"):

1430

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

1431

and prop._dbus_interface

1432

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

1433

annots.update(getattr(

1434

prop, "_dbus_annotations", {}))

1435

for name, value in annots.items():

1436

ann_tag = document.createElement(

1437

"annotation")

1438

ann_tag.setAttribute("name", name)

1439

ann_tag.setAttribute("value", value)

1440

tag.appendChild(ann_tag)

1030

1441

# Add the names to the return values for the

1031

1442

# "org.freedesktop.DBus.Properties" methods

1032

1443

if (if_tag.getAttribute("name")

1050

1461

exc_info=error)

1051

1462

return xmlstring

1052

1463

1464

try:

1465

dbus.OBJECT_MANAGER_IFACE

1466

except AttributeError:

1467

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

1468

1469

1470

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1471

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

1472

1473

Classes inheriting from this exposes the standard

1474

GetManagedObjects call and the InterfacesAdded and

1475

InterfacesRemoved signals on the standard

1476

"org.freedesktop.DBus.ObjectManager" interface.

1477

1478

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

1479

manually.

1480

"""

1481

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1482

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

1483

def GetManagedObjects(self):

1484

"""This function must be overridden"""

1485

raise NotImplementedError()

1486

1487

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1488

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

1489

def InterfacesAdded(self, object_path, interfaces_and_properties):

1490

pass

1491

1492

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

1493

def InterfacesRemoved(self, object_path, interfaces):

1494

pass

1495

1496

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1497

out_signature="s",

1498

path_keyword='object_path',

1499

connection_keyword='connection')

1500

def Introspect(self, object_path, connection):

1501

"""Overloading of standard D-Bus method.

1502

1503

Override return argument name of GetManagedObjects to be

1504

"objpath_interfaces_and_properties"

1505

"""

1506

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1507

object_path,

1508

connection)

1509

try:

1510

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

1511

1512

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

1513

# Fix argument name for the GetManagedObjects method

1514

if (if_tag.getAttribute("name")

1515

== dbus.OBJECT_MANAGER_IFACE):

1516

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

1517

if (cn.getAttribute("name")

1518

== "GetManagedObjects"):

1519

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

1520

if (arg.getAttribute("direction")

1521

== "out"):

1522

arg.setAttribute(

1523

"name",

1524

"objpath_interfaces"

1525

"_and_properties")

1526

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

1527

document.unlink()

1528

except (AttributeError, xml.dom.DOMException,

1529

xml.parsers.expat.ExpatError) as error:

1530

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

1531

exc_info=error)

1532

return xmlstring

1533

1053

1534

1054

1535

def datetime_to_dbus(dt, variant_level=0):

1055

1536

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

1056

1537

if dt is None:

1057

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1538

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

1539

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

1060

1540

1061

1541

1062

1542

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1064

1544

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

1065

1545

interface names according to the "alt_interface_names" mapping.

1066

1546

Usage:

1067

1547

1068

1548

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

1069

1549

"net.example.AlternateInterface"})

1070

1550

class SampleDBusObject(dbus.service.Object):

1071

1551

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

1072

1552

def SampleDBusMethod():

1073

1553

pass

1074

1554

1075

1555

The above "SampleDBusMethod" on "SampleDBusObject" will be

1076

1556

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

1077

1557

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

1078

1558

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

1079

1559

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

1080

1560

1081

1561

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

1082

1562

(from DBusObjectWithProperties) and interfaces (from the

1083

1563

dbus_interface_annotations decorator).

1084

1564

"""

1565

1085

1566

def wrapper(cls):

1086

1567

for orig_interface_name, alt_interface_name in (

1087

alt_interface_names.iteritems()):

1568

alt_interface_names.items()):

1088

1569

attr = {}

1089

1570

interface_names = set()

1090

1571

# Go though all attributes of the class

1092

1573

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

1093

1574

# with the wrong interface name

1094

1575

if (not hasattr(attribute, "_dbus_interface")

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1576

or not attribute._dbus_interface.startswith(

1577

orig_interface_name)):

1097

1578

continue

1098

1579

# Create an alternate D-Bus interface name based on

1099

1580

# the current name

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1581

alt_interface = attribute._dbus_interface.replace(

1582

orig_interface_name, alt_interface_name)

1103

1583

interface_names.add(alt_interface)

1104

1584

# Is this a D-Bus signal?

1105

1585

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

1106

1586

# Extract the original non-method undecorated

1107

1587

# function by black magic

1108

nonmethod_func = (dict(

1588

if sys.version_info.major == 2:

1589

nonmethod_func = (dict(

1109

1590

zip(attribute.func_code.co_freevars,

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1591

attribute.__closure__))

1592

["func"].cell_contents)

1593

else:

1594

nonmethod_func = (dict(

1595

zip(attribute.__code__.co_freevars,

1596

attribute.__closure__))

1597

["func"].cell_contents)

1112

1598

# Create a new, but exactly alike, function

1113

1599

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

1114

1600

# with the alternate D-Bus interface name

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1601

new_function = copy_function(nonmethod_func)

1602

new_function = (dbus.service.signal(

1603

alt_interface,

1604

attribute._dbus_signature)(new_function))

1124

1605

# Copy annotations, if any

1125

1606

try:

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1607

new_function._dbus_annotations = dict(

1608

attribute._dbus_annotations)

1128

1609

except AttributeError:

1129

1610

pass

1611

1130

1612

# Define a creator of a function to call both the

1131

1613

# original and alternate functions, so both the

1132

1614

# original and alternate signals gets sent when

1135

1617

"""This function is a scope container to pass

1136

1618

func1 and func2 to the "call_both" function

1137

1619

outside of its arguments"""

1620

1621

@functools.wraps(func2)

1138

1622

def call_both(*args, **kwargs):

1139

1623

"""This function will emit two D-Bus

1140

1624

signals by calling func1 and func2"""

1141

1625

func1(*args, **kwargs)

1142

1626

func2(*args, **kwargs)

1627

# Make wrapper function look like a D-Bus

1628

# signal

1629

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

1630

if name.startswith("_dbus_"):

1631

setattr(call_both, name, attr)

1632

1143

1633

return call_both

1144

1634

# Create the "call_both" function and add it to

1145

1635

# the class

1150

1640

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

1151

1641

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

1152

1642

# to the class.

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1643

attr[attrname] = (

1644

dbus.service.method(

1645

alt_interface,

1646

attribute._dbus_in_signature,

1647

attribute._dbus_out_signature)

1648

(copy_function(attribute)))

1163

1649

# Copy annotations, if any

1164

1650

try:

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1651

attr[attrname]._dbus_annotations = dict(

1652

attribute._dbus_annotations)

1167

1653

except AttributeError:

1168

1654

pass

1169

1655

# Is this a D-Bus property?

1172

1658

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

1173

1659

# property with the alternate D-Bus interface

1174

1660

# name. Add it to the class.

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1661

attr[attrname] = (dbus_service_property(

1662

alt_interface, attribute._dbus_signature,

1663

attribute._dbus_access,

1664

attribute._dbus_get_args_options

1665

["byte_arrays"])

1666

(copy_function(attribute)))

1188

1667

# Copy annotations, if any

1189

1668

try:

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1669

attr[attrname]._dbus_annotations = dict(

1670

attribute._dbus_annotations)

1192

1671

except AttributeError:

1193

1672

pass

1194

1673

# Is this a D-Bus interface?

1197

1676

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

1198

1677

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

1199

1678

# to the class.

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1679

attr[attrname] = (

1680

dbus_interface_annotations(alt_interface)

1681

(copy_function(attribute)))

1208

1682

if deprecate:

1209

1683

# Deprecate all alternate interfaces

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1684

iname = "_AlternateDBusNames_interface_annotation{}"

1211

1685

for interface_name in interface_names:

1686

1212

1687

@dbus_interface_annotations(interface_name)

1213

1688

def func(self):

1214

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

1215

"true" }

1689

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

1690

"true"}

1216

1691

# Find an unused name

1217

1692

for aname in (iname.format(i)

1218

1693

for i in itertools.count()):

1222

1697

if interface_names:

1223

1698

# Replace the class with a new subclass of it with

1224

1699

# methods, signals, etc. as created above.

1225

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

1226

(cls,), attr)

1700

if sys.version_info.major == 2:

1701

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

1702

(cls, ), attr)

1703

else:

1704

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

1705

(cls, ), attr)

1227

1706

return cls

1707

1228

1708

return wrapper

1229

1709

1230

1710

1231

1711

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

1232

"se.bsnet.fukt.Mandos"})

1712

"se.bsnet.fukt.Mandos"})

1233

1713

class ClientDBus(Client, DBusObjectWithProperties):

1234

1714

"""A Client class using D-Bus

1235

1715

1236

1716

Attributes:

1237

1717

dbus_object_path: dbus.ObjectPath

1238

1718

bus: dbus.SystemBus()

1239

1719

"""

1240

1720

1241

1721

runtime_expansions = (Client.runtime_expansions

1242

+ ("dbus_object_path",))

1243

1722

+ ("dbus_object_path", ))

1723

1724

_interface = "se.recompile.Mandos.Client"

1725

1244

1726

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

1245

1246

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

1727

1728

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

1247

1729

self.bus = bus

1248

1730

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

1249

1731

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

1250

1732

# the D-Bus

1251

client_object_name = unicode(self.name).translate(

1733

client_object_name = str(self.name).translate(

1252

1734

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

1253

1735

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

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1736

self.dbus_object_path = dbus.ObjectPath(

1737

"/clients/" + client_object_name)

1256

1738

DBusObjectWithProperties.__init__(self, self.bus,

1257

1739

self.dbus_object_path)

1258

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1740

1741

def notifychangeproperty(transform_func, dbus_name,

1742

type_func=lambda x: x,

1743

variant_level=1,

1744

invalidate_only=False,

1745

_interface=_interface):

1262

1746

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

1263

1747

its changes to DBus.

1264

1748

1265

1749

transform_fun: Function that takes a value and a variant_level

1266

1750

and transforms it to a D-Bus type.

1267

1751

dbus_name: D-Bus name of the variable

1269

1753

to the D-Bus. Default: no transform

1270

1754

variant_level: D-Bus variant level. Default: 1

1271

1755

"""

1272

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

1756

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

1757

1273

1758

def setter(self, value):

1274

1759

if hasattr(self, "dbus_object_path"):

1275

1760

if (not hasattr(self, attrname) or

1276

1761

type_func(getattr(self, attrname, None))

1277

1762

!= type_func(value)):

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1763

if invalidate_only:

1764

self.PropertiesChanged(

1765

_interface, dbus.Dictionary(),

1766

dbus.Array((dbus_name, )))

1767

else:

1768

dbus_value = transform_func(

1769

type_func(value),

1770

variant_level=variant_level)

1771

self.PropertyChanged(dbus.String(dbus_name),

1772

dbus_value)

1773

self.PropertiesChanged(

1774

_interface,

1775

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

1776

dbus_value}),

1777

dbus.Array())

1283

1778

setattr(self, attrname, value)

1284

1779

1285

1780

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

1286

1781

1287

1782

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1288

1783

approvals_pending = notifychangeproperty(dbus.Boolean,

1289

1784

"ApprovalPending",

1290

type_func = bool)

1785

type_func=bool)

1291

1786

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

1292

1787

last_enabled = notifychangeproperty(datetime_to_dbus,

1293

1788

"LastEnabled")

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1789

checker = notifychangeproperty(

1790

dbus.Boolean, "CheckerRunning",

1791

type_func=lambda checker: checker is not None)

1297

1792

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1298

1793

"LastCheckedOK")

1299

1794

last_checker_status = notifychangeproperty(dbus.Int16,

1302

1797

datetime_to_dbus, "LastApprovalRequest")

1303

1798

approved_by_default = notifychangeproperty(dbus.Boolean,

1304

1799

"ApprovedByDefault")

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1800

approval_delay = notifychangeproperty(

1801

dbus.UInt64, "ApprovalDelay",

1802

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

1309

1803

approval_duration = notifychangeproperty(

1310

1804

dbus.UInt64, "ApprovalDuration",

1311

type_func = timedelta_to_milliseconds)

1805

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

1312

1806

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1807

timeout = notifychangeproperty(

1808

dbus.UInt64, "Timeout",

1809

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

1316

1810

extended_timeout = notifychangeproperty(

1317

1811

dbus.UInt64, "ExtendedTimeout",

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1812

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

1813

interval = notifychangeproperty(

1814

dbus.UInt64, "Interval",

1815

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

1323

1816

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

1324

1817

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

1818

invalidate_only=True)

1819

1325

1820

del notifychangeproperty

1326

1821

1327

1822

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

1328

1823

try:

1329

1824

self.remove_from_connection()

1332

1827

if hasattr(DBusObjectWithProperties, "__del__"):

1333

1828

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

1334

1829

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

1335

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1830

1831

def checker_callback(self, source, condition,

1832

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

1833

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

1834

connection, command, *args,

1835

**kwargs)

1836

exitstatus = self.last_checker_status

1837

if exitstatus >= 0:

1342

1838

# Emit D-Bus signal

1343

1839

self.CheckerCompleted(dbus.Int16(exitstatus),

1344

dbus.Int64(condition),

1840

# This is specific to GNU libC

1841

dbus.Int64(exitstatus << 8),

1345

1842

dbus.String(command))

1346

1843

else:

1347

1844

# Emit D-Bus signal

1348

1845

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

1349

dbus.Int64(condition),

1846

dbus.Int64(

1847

# This is specific to GNU libC

1848

(exitstatus << 8)

1849

| self.last_checker_signal),

1350

1850

dbus.String(command))

1351

1352

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

1353

*args, **kwargs)

1354

1851

return ret

1852

1355

1853

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

1356

1854

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

1357

1855

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

1361

1859

# Emit D-Bus signal

1362

1860

self.CheckerStarted(self.current_checker_command)

1363

1861

return r

1364

1862

1365

1863

def _reset_approved(self):

1366

1864

self.approved = None

1367

1865

return False

1368

1866

1369

1867

def approve(self, value=True):

1370

1868

self.approved = value

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1869

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

1870

* 1000), self._reset_approved)

1374

1871

self.send_changedstate()

1375

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1379

## Interfaces

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

## Signals

1387

1872

1873

# D-Bus methods, signals & properties

1874

1875

# Interfaces

1876

1877

# Signals

1878

1388

1879

# CheckerCompleted - signal

1389

1880

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

1390

1881

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

1391

1882

"D-Bus signal"

1392

1883

pass

1393

1884

1394

1885

# CheckerStarted - signal

1395

1886

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

1396

1887

def CheckerStarted(self, command):

1397

1888

"D-Bus signal"

1398

1889

pass

1399

1890

1400

1891

# PropertyChanged - signal

1892

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

1401

1893

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

1402

1894

def PropertyChanged(self, property, value):

1403

1895

"D-Bus signal"

1404

1896

pass

1405

1897

1406

1898

# GotSecret - signal

1407

1899

@dbus.service.signal(_interface)

1408

1900

def GotSecret(self):

1411

1903

server to mandos-client

1412

1904

"""

1413

1905

pass

1414

1906

1415

1907

# Rejected - signal

1416

1908

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

1417

1909

def Rejected(self, reason):

1418

1910

"D-Bus signal"

1419

1911

pass

1420

1912

1421

1913

# NeedApproval - signal

1422

1914

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

1423

1915

def NeedApproval(self, timeout, default):

1424

1916

"D-Bus signal"

1425

1917

return self.need_approval()

1426

1427

## Methods

1428

1918

1919

# Methods

1920

1429

1921

# Approve - method

1430

1922

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

1431

1923

def Approve(self, value):

1432

1924

self.approve(value)

1433

1925

1434

1926

# CheckedOK - method

1435

1927

@dbus.service.method(_interface)

1436

1928

def CheckedOK(self):

1437

1929

self.checked_ok()

1438

1930

1439

1931

# Enable - method

1932

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

1440

1933

@dbus.service.method(_interface)

1441

1934

def Enable(self):

1442

1935

"D-Bus method"

1443

1936

self.enable()

1444

1937

1445

1938

# StartChecker - method

1939

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

1446

1940

@dbus.service.method(_interface)

1447

1941

def StartChecker(self):

1448

1942

"D-Bus method"

1449

1943

self.start_checker()

1450

1944

1451

1945

# Disable - method

1946

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

1452

1947

@dbus.service.method(_interface)

1453

1948

def Disable(self):

1454

1949

"D-Bus method"

1455

1950

self.disable()

1456

1951

1457

1952

# StopChecker - method

1953

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

1458

1954

@dbus.service.method(_interface)

1459

1955

def StopChecker(self):

1460

1956

self.stop_checker()

1461

1462

## Properties

1463

1957

1958

# Properties

1959

1464

1960

# ApprovalPending - property

1465

1961

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

1466

1962

def ApprovalPending_dbus_property(self):

1467

1963

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

1468

1964

1469

1965

# ApprovedByDefault - property

1470

@dbus_service_property(_interface, signature="b",

1966

@dbus_service_property(_interface,

1967

signature="b",

1471

1968

access="readwrite")

1472

1969

def ApprovedByDefault_dbus_property(self, value=None):

1473

1970

if value is None: # get

1474

1971

return dbus.Boolean(self.approved_by_default)

1475

1972

self.approved_by_default = bool(value)

1476

1973

1477

1974

# ApprovalDelay - property

1478

@dbus_service_property(_interface, signature="t",

1975

@dbus_service_property(_interface,

1976

signature="t",

1479

1977

access="readwrite")

1480

1978

def ApprovalDelay_dbus_property(self, value=None):

1481

1979

if value is None: # get

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1980

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

1981

* 1000)

1483

1982

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

1484

1983

1485

1984

# ApprovalDuration - property

1486

@dbus_service_property(_interface, signature="t",

1985

@dbus_service_property(_interface,

1986

signature="t",

1487

1987

access="readwrite")

1488

1988

def ApprovalDuration_dbus_property(self, value=None):

1489

1989

if value is None: # get

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1990

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

1991

* 1000)

1492

1992

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

1493

1993

1494

1994

# Name - property

1995

@dbus_annotations(

1996

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

1495

1997

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

1496

1998

def Name_dbus_property(self):

1497

1999

return dbus.String(self.name)

1498

2000

1499

2001

# Fingerprint - property

2002

@dbus_annotations(

2003

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

1500

2004

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

1501

2005

def Fingerprint_dbus_property(self):

1502

2006

return dbus.String(self.fingerprint)

1503

2007

1504

2008

# Host - property

1505

@dbus_service_property(_interface, signature="s",

2009

@dbus_service_property(_interface,

2010

signature="s",

1506

2011

access="readwrite")

1507

2012

def Host_dbus_property(self, value=None):

1508

2013

if value is None: # get

1509

2014

return dbus.String(self.host)

1510

self.host = unicode(value)

1511

2015

self.host = str(value)

2016

1512

2017

# Created - property

2018

@dbus_annotations(

2019

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

1513

2020

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

1514

2021

def Created_dbus_property(self):

1515

2022

return datetime_to_dbus(self.created)

1516

2023

1517

2024

# LastEnabled - property

1518

2025

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

1519

2026

def LastEnabled_dbus_property(self):

1520

2027

return datetime_to_dbus(self.last_enabled)

1521

2028

1522

2029

# Enabled - property

1523

@dbus_service_property(_interface, signature="b",

2030

@dbus_service_property(_interface,

2031

signature="b",

1524

2032

access="readwrite")

1525

2033

def Enabled_dbus_property(self, value=None):

1526

2034

if value is None: # get

1529

2037

self.enable()

1530

2038

else:

1531

2039

self.disable()

1532

2040

1533

2041

# LastCheckedOK - property

1534

@dbus_service_property(_interface, signature="s",

2042

@dbus_service_property(_interface,

2043

signature="s",

1535

2044

access="readwrite")

1536

2045

def LastCheckedOK_dbus_property(self, value=None):

1537

2046

if value is not None:

1538

2047

self.checked_ok()

1539

2048

return

1540

2049

return datetime_to_dbus(self.last_checked_ok)

1541

2050

1542

2051

# LastCheckerStatus - property

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

2052

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

1545

2053

def LastCheckerStatus_dbus_property(self):

1546

2054

return dbus.Int16(self.last_checker_status)

1547

2055

1548

2056

# Expires - property

1549

2057

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

1550

2058

def Expires_dbus_property(self):

1551

2059

return datetime_to_dbus(self.expires)

1552

2060

1553

2061

# LastApprovalRequest - property

1554

2062

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

1555

2063

def LastApprovalRequest_dbus_property(self):

1556

2064

return datetime_to_dbus(self.last_approval_request)

1557

2065

1558

2066

# Timeout - property

1559

@dbus_service_property(_interface, signature="t",

2067

@dbus_service_property(_interface,

2068

signature="t",

1560

2069

access="readwrite")

1561

2070

def Timeout_dbus_property(self, value=None):

1562

2071

if value is None: # get

1563

return dbus.UInt64(self.timeout_milliseconds())

2072

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

1564

2073

old_timeout = self.timeout

1565

2074

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

1566

2075

# Reschedule disabling

1574

2083

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

1575

2084

is None):

1576

2085

return

1577

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1582

2086

GLib.source_remove(self.disable_initiator_tag)

2087

self.disable_initiator_tag = GLib.timeout_add(

2088

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

2089

self.disable)

2090

1583

2091

# ExtendedTimeout - property

1584

@dbus_service_property(_interface, signature="t",

2092

@dbus_service_property(_interface,

2093

signature="t",

1585

2094

access="readwrite")

1586

2095

def ExtendedTimeout_dbus_property(self, value=None):

1587

2096

if value is None: # get

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

2097

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

2098

* 1000)

1589

2099

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

1590

2100

1591

2101

# Interval - property

1592

@dbus_service_property(_interface, signature="t",

2102

@dbus_service_property(_interface,

2103

signature="t",

1593

2104

access="readwrite")

1594

2105

def Interval_dbus_property(self, value=None):

1595

2106

if value is None: # get

1596

return dbus.UInt64(self.interval_milliseconds())

2107

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

1597

2108

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

1598

2109

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

1599

2110

return

1600

2111

if self.enabled:

1601

2112

# Reschedule checker run

1602

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1606

2113

GLib.source_remove(self.checker_initiator_tag)

2114

self.checker_initiator_tag = GLib.timeout_add(

2115

value, self.start_checker)

2116

self.start_checker() # Start one now, too

2117

1607

2118

# Checker - property

1608

@dbus_service_property(_interface, signature="s",

2119

@dbus_service_property(_interface,

2120

signature="s",

1609

2121

access="readwrite")

1610

2122

def Checker_dbus_property(self, value=None):

1611

2123

if value is None: # get

1612

2124

return dbus.String(self.checker_command)

1613

self.checker_command = unicode(value)

1614

2125

self.checker_command = str(value)

2126

1615

2127

# CheckerRunning - property

1616

@dbus_service_property(_interface, signature="b",

2128

@dbus_service_property(_interface,

2129

signature="b",

1617

2130

access="readwrite")

1618

2131

def CheckerRunning_dbus_property(self, value=None):

1619

2132

if value is None: # get

1622

2135

self.start_checker()

1623

2136

else:

1624

2137

self.stop_checker()

1625

2138

1626

2139

# ObjectPath - property

2140

@dbus_annotations(

2141

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

2142

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

1627

2143

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

1628

2144

def ObjectPath_dbus_property(self):

1629

return self.dbus_object_path # is already a dbus.ObjectPath

1630

2145

return self.dbus_object_path # is already a dbus.ObjectPath

2146

1631

2147

# Secret = property

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

2148

@dbus_annotations(

2149

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

2150

"invalidates"})

2151

@dbus_service_property(_interface,

2152

signature="ay",

2153

access="write",

2154

byte_arrays=True)

1634

2155

def Secret_dbus_property(self, value):

1635

self.secret = str(value)

1636

2156

self.secret = bytes(value)

2157

1637

2158

del _interface

1638

2159

1639

2160

1642

2163

self._pipe = child_pipe

1643

2164

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

1644

2165

if not self._pipe.recv():

1645

raise KeyError()

1646

2166

raise KeyError(fpr)

2167

1647

2168

def __getattribute__(self, name):

1648

2169

if name == '_pipe':

1649

2170

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

1652

2173

if data[0] == 'data':

1653

2174

return data[1]

1654

2175

if data[0] == 'function':

2176

1655

2177

def func(*args, **kwargs):

1656

2178

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

1657

2179

return self._pipe.recv()[1]

2180

1658

2181

return func

1659

2182

1660

2183

def __setattr__(self, name, value):

1661

2184

if name == '_pipe':

1662

2185

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

1665

2188

1666

2189

class ClientHandler(socketserver.BaseRequestHandler, object):

1667

2190

"""A class to handle client connections.

1668

2191

1669

2192

Instantiated once for each connection to handle it.

1670

2193

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

1671

2194

1672

2195

def handle(self):

1673

2196

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

1674

2197

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

1675

unicode(self.client_address))

2198

str(self.client_address))

1676

2199

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

1677

2200

self.server.child_pipe.fileno())

1678

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1683

1684

# Note: gnutls.connection.X509Credentials is really a

1685

# generic GnuTLS certificate credentials object so long as

1686

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

1687

# here despite using OpenPGP certificates.

1688

1689

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

1690

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

1691

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

1692

# "+DHE-DSS"))

2201

2202

session = gnutls.ClientSession(self.request)

2203

2204

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

2205

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

2206

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

2207

# "+DHE-DSS"))

1693

2208

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

1694

2209

priority = self.server.gnutls_priority

1695

2210

if priority is None:

1696

2211

priority = "NORMAL"

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1700

2212

gnutls.priority_set_direct(session._c_object,

2213

priority.encode("utf-8"),

2214

None)

2215

1701

2216

# Start communication using the Mandos protocol

1702

2217

# Get protocol number

1703

2218

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

1708

2223

except (ValueError, IndexError, RuntimeError) as error:

1709

2224

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

1710

2225

return

1711

2226

1712

2227

# Start GnuTLS connection

1713

2228

try:

1714

2229

session.handshake()

1715

except gnutls.errors.GNUTLSError as error:

2230

except gnutls.Error as error:

1716

2231

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

1717

2232

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

1718

2233

# established. Just abandon the request.

1719

2234

return

1720

2235

logger.debug("Handshake succeeded")

1721

2236

1722

2237

approval_required = False

1723

2238

try:

1724

2239

try:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1727

except (TypeError,

1728

gnutls.errors.GNUTLSError) as error:

2240

fpr = self.fingerprint(

2241

self.peer_certificate(session))

2242

except (TypeError, gnutls.Error) as error:

1729

2243

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

1730

2244

return

1731

2245

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

1732

2246

1733

2247

try:

1734

2248

client = ProxyClient(child_pipe, fpr,

1735

2249

self.client_address)

1736

2250

except KeyError:

1737

2251

return

1738

2252

1739

2253

if client.approval_delay:

1740

2254

delay = client.approval_delay

1741

2255

client.approvals_pending += 1

1742

2256

approval_required = True

1743

2257

1744

2258

while True:

1745

2259

if not client.enabled:

1746

2260

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

1747

client.name)

2261

client.name)

1748

2262

if self.server.use_dbus:

1749

2263

# Emit D-Bus signal

1750

2264

client.Rejected("Disabled")

1751

2265

return

1752

2266

1753

2267

if client.approved or not client.approval_delay:

1754

#We are approved or approval is disabled

2268

# We are approved or approval is disabled

1755

2269

break

1756

2270

elif client.approved is None:

1757

2271

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

1759

2273

if self.server.use_dbus:

1760

2274

# Emit D-Bus signal

1761

2275

client.NeedApproval(

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

2276

client.approval_delay.total_seconds()

2277

* 1000, client.approved_by_default)

1764

2278

else:

1765

2279

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

1766

2280

client.name)

1768

2282

# Emit D-Bus signal

1769

2283

client.Rejected("Denied")

1770

2284

return

1771

1772

#wait until timeout or approved

2285

2286

# wait until timeout or approved

1773

2287

time = datetime.datetime.now()

1774

2288

client.changedstate.acquire()

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

2289

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

1778

2290

client.changedstate.release()

1779

2291

time2 = datetime.datetime.now()

1780

2292

if (time2 - time) >= delay:

1790

2302

break

1791

2303

else:

1792

2304

delay -= time2 - time

1793

1794

sent_size = 0

1795

while sent_size < len(client.secret):

1796

try:

1797

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

1798

except gnutls.errors.GNUTLSError as error:

1799

logger.warning("gnutls send failed",

1800

exc_info=error)

1801

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1805

sent_size += sent

1806

2305

2306

try:

2307

session.send(client.secret)

2308

except gnutls.Error as error:

2309

logger.warning("gnutls send failed",

2310

exc_info=error)

2311

return

2312

1807

2313

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

1808

2314

# bump the timeout using extended_timeout

1809

2315

client.bump_timeout(client.extended_timeout)

1810

2316

if self.server.use_dbus:

1811

2317

# Emit D-Bus signal

1812

2318

client.GotSecret()

1813

2319

1814

2320

finally:

1815

2321

if approval_required:

1816

2322

client.approvals_pending -= 1

1817

2323

try:

1818

2324

session.bye()

1819

except gnutls.errors.GNUTLSError as error:

2325

except gnutls.Error as error:

1820

2326

logger.warning("GnuTLS bye failed",

1821

2327

exc_info=error)

1822

2328

1823

2329

@staticmethod

1824

2330

def peer_certificate(session):

1825

2331

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

1826

2332

# If not an OpenPGP certificate...

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

# ...do the normal thing

1831

return session.peer_certificate

2333

if (gnutls.certificate_type_get(session._c_object)

2334

!= gnutls.CRT_OPENPGP):

2335

# ...return invalid data

2336

return b""

1832

2337

list_size = ctypes.c_uint(1)

1833

cert_list = (gnutls.library.functions

1834

.gnutls_certificate_get_peers

2338

cert_list = (gnutls.certificate_get_peers

1835

2339

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

1836

2340

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

1837

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

1838

" certificate")

2341

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

1839

2342

if list_size.value == 0:

1840

2343

return None

1841

2344

cert = cert_list[0]

1842

2345

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

1843

2346

1844

2347

@staticmethod

1845

2348

def fingerprint(openpgp):

1846

2349

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1847

2350

# New GnuTLS "datum" with the OpenPGP public key

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

2351

datum = gnutls.datum_t(

2352

ctypes.cast(ctypes.c_char_p(openpgp),

2353

ctypes.POINTER(ctypes.c_ubyte)),

2354

ctypes.c_uint(len(openpgp)))

1853

2355

# New empty GnuTLS certificate

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2356

crt = gnutls.openpgp_crt_t()

2357

gnutls.openpgp_crt_init(ctypes.byref(crt))

1857

2358

# Import the OpenPGP public key into the certificate

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

2359

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

2360

gnutls.OPENPGP_FMT_RAW)

1862

2361

# Verify the self signature in the key

1863

2362

crtverify = ctypes.c_uint()

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

2363

gnutls.openpgp_crt_verify_self(crt, 0,

2364

ctypes.byref(crtverify))

1867

2365

if crtverify.value != 0:

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

2366

gnutls.openpgp_crt_deinit(crt)

2367

raise gnutls.CertificateSecurityError("Verify failed")

1871

2368

# New buffer for the fingerprint

1872

2369

buf = ctypes.create_string_buffer(20)

1873

2370

buf_len = ctypes.c_size_t()

1874

2371

# Get the fingerprint from the certificate into the buffer

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

2372

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

2373

ctypes.byref(buf_len))

1878

2374

# Deinit the certificate

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2375

gnutls.openpgp_crt_deinit(crt)

1880

2376

# Convert the buffer to a Python bytestring

1881

2377

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

1882

2378

# Convert the bytestring to hexadecimal notation

1886

2382

1887

2383

class MultiprocessingMixIn(object):

1888

2384

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

2385

1889

2386

def sub_process_main(self, request, address):

1890

2387

try:

1891

2388

self.finish_request(request, address)

1892

2389

except Exception:

1893

2390

self.handle_error(request, address)

1894

2391

self.close_request(request)

1895

2392

1896

2393

def process_request(self, request, address):

1897

2394

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

1898

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

1899

args = (request, address))

2395

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

2396

args=(request, address))

1900

2397

proc.start()

1901

2398

return proc

1902

2399

1903

2400

1904

2401

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1905

2402

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

2403

1906

2404

def process_request(self, request, client_address):

1907

2405

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

1908

2406

1909

2407

This function creates a new pipe in self.pipe

1910

2408

"""

1911

2409

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1912

2410

1913

2411

proc = MultiprocessingMixIn.process_request(self, request,

1914

2412

client_address)

1915

2413

self.child_pipe.close()

1916

2414

self.add_pipe(parent_pipe, proc)

1917

2415

1918

2416

def add_pipe(self, parent_pipe, proc):

1919

2417

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

1920

2418

raise NotImplementedError()

1923

2421

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1924

2422

socketserver.TCPServer, object):

1925

2423

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

1926

2424

1927

2425

Attributes:

1928

2426

enabled: Boolean; whether this server is activated yet

1929

2427

interface: None or a network interface name (string)

1930

2428

use_ipv6: Boolean; to use IPv6 or not

1931

2429

"""

2430

1932

2431

def __init__(self, server_address, RequestHandlerClass,

1933

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

2432

interface=None,

2433

use_ipv6=True,

2434

socketfd=None):

1934

2435

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

1935

2436

creating a new one with socket.socket().

1936

2437

"""

1942

2443

self.socketfd = socketfd

1943

2444

# Save the original socket.socket() function

1944

2445

self.socket_socket = socket.socket

2446

1945

2447

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

1946

#

2448

#

1947

2449

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

1948

2450

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

1949

2451

# patching socket.socket.)

1950

#

2452

#

1951

2453

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

1952

2454

@functools.wraps(socket.socket)

1953

2455

def socket_wrapper(*args, **kwargs):

1965

2467

# socket_wrapper(), if socketfd was set.

1966

2468

socketserver.TCPServer.__init__(self, server_address,

1967

2469

RequestHandlerClass)

1968

2470

1969

2471

def server_bind(self):

1970

2472

"""This overrides the normal server_bind() function

1971

2473

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

1972

2474

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

2475

global SO_BINDTODEVICE

1973

2476

if self.interface is not None:

1974

2477

if SO_BINDTODEVICE is None:

1975

logger.error("SO_BINDTODEVICE does not exist;"

1976

" cannot bind to interface %s",

1977

self.interface)

1978

else:

1979

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

1983

except socket.error as error:

1984

if error.errno == errno.EPERM:

1985

logger.error("No permission to bind to"

1986

" interface %s", self.interface)

1987

elif error.errno == errno.ENOPROTOOPT:

1988

logger.error("SO_BINDTODEVICE not available;"

1989

" cannot bind to interface %s",

1990

self.interface)

1991

elif error.errno == errno.ENODEV:

1992

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

1993

" cannot bind", self.interface)

1994

else:

1995

raise

2478

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

2479

# common enough.

2480

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

2481

SO_BINDTODEVICE = 25

2482

try:

2483

self.socket.setsockopt(

2484

socket.SOL_SOCKET, SO_BINDTODEVICE,

2485

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

2486

except socket.error as error:

2487

if error.errno == errno.EPERM:

2488

logger.error("No permission to bind to"

2489

" interface %s", self.interface)

2490

elif error.errno == errno.ENOPROTOOPT:

2491

logger.error("SO_BINDTODEVICE not available;"

2492

" cannot bind to interface %s",

2493

self.interface)

2494

elif error.errno == errno.ENODEV:

2495

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

2496

" cannot bind", self.interface)

2497

else:

2498

raise

1996

2499

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

1997

2500

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

1998

2501

if not self.server_address[0]:

1999

2502

if self.address_family == socket.AF_INET6:

2000

any_address = "::" # in6addr_any

2503

any_address = "::" # in6addr_any

2001

2504

else:

2002

any_address = "0.0.0.0" # INADDR_ANY

2505

any_address = "0.0.0.0" # INADDR_ANY

2003

2506

self.server_address = (any_address,

2004

2507

self.server_address[1])

2005

2508

elif not self.server_address[1]:

2006

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

2007

0)

2509

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

2008

2510

# if self.interface:

2009

2511

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

2010

2512

# 0, # port

2016

2518

2017

2519

class MandosServer(IPv6_TCPServer):

2018

2520

"""Mandos server.

2019

2521

2020

2522

Attributes:

2021

2523

clients: set of Client objects

2022

2524

gnutls_priority GnuTLS priority string

2023

2525

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

2024

2025

Assumes a gobject.MainLoop event loop.

2526

2527

Assumes a GLib.MainLoop event loop.

2026

2528

"""

2529

2027

2530

def __init__(self, server_address, RequestHandlerClass,

2028

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

2029

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

2531

interface=None,

2532

use_ipv6=True,

2533

clients=None,

2534

gnutls_priority=None,

2535

use_dbus=True,

2536

socketfd=None):

2030

2537

self.enabled = False

2031

2538

self.clients = clients

2032

2539

if self.clients is None:

2035

2542

self.gnutls_priority = gnutls_priority

2036

2543

IPv6_TCPServer.__init__(self, server_address,

2037

2544

RequestHandlerClass,

2038

interface = interface,

2039

use_ipv6 = use_ipv6,

2040

socketfd = socketfd)

2545

interface=interface,

2546

use_ipv6=use_ipv6,

2547

socketfd=socketfd)

2548

2041

2549

def server_activate(self):

2042

2550

if self.enabled:

2043

2551

return socketserver.TCPServer.server_activate(self)

2044

2552

2045

2553

def enable(self):

2046

2554

self.enabled = True

2047

2555

2048

2556

def add_pipe(self, parent_pipe, proc):

2049

2557

# Call "handle_ipc" for both data and EOF events

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2056

2057

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

2058

proc = None, client_object=None):

2558

GLib.io_add_watch(

2559

parent_pipe.fileno(),

2560

GLib.IO_IN | GLib.IO_HUP,

2561

functools.partial(self.handle_ipc,

2562

parent_pipe=parent_pipe,

2563

proc=proc))

2564

2565

def handle_ipc(self, source, condition,

2566

parent_pipe=None,

2567

proc=None,

2568

client_object=None):

2059

2569

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

2060

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

2570

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

2061

2571

# Wait for other process to exit

2062

2572

proc.join()

2063

2573

return False

2064

2574

2065

2575

# Read a request from the child

2066

2576

request = parent_pipe.recv()

2067

2577

command = request[0]

2068

2578

2069

2579

if command == 'init':

2070

2580

fpr = request[1]

2071

2581

address = request[2]

2072

2073

for c in self.clients.itervalues():

2582

2583

for c in self.clients.values():

2074

2584

if c.fingerprint == fpr:

2075

2585

client = c

2076

2586

break

2083

2593

address[0])

2084

2594

parent_pipe.send(False)

2085

2595

return False

2086

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2596

2597

GLib.io_add_watch(

2598

parent_pipe.fileno(),

2599

GLib.IO_IN | GLib.IO_HUP,

2600

functools.partial(self.handle_ipc,

2601

parent_pipe=parent_pipe,

2602

proc=proc,

2603

client_object=client))

2095

2604

parent_pipe.send(True)

2096

2605

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

2097

2606

# same fileno

2100

2609

funcname = request[1]

2101

2610

args = request[2]

2102

2611

kwargs = request[3]

2103

2612

2104

2613

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

2105

2614

funcname)(*args,

2106

**kwargs)))

2107

2615

**kwargs)))

2616

2108

2617

if command == 'getattr':

2109

2618

attrname = request[1]

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2619

if isinstance(client_object.__getattribute__(attrname),

2620

collections.Callable):

2621

parent_pipe.send(('function', ))

2112

2622

else:

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2115

2623

parent_pipe.send((

2624

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

2625

2116

2626

if command == 'setattr':

2117

2627

attrname = request[1]

2118

2628

value = request[2]

2119

2629

setattr(client_object, attrname, value)

2120

2630

2121

2631

return True

2122

2632

2123

2633

2124

2634

def rfc3339_duration_to_delta(duration):

2125

2635

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

2126

2636

2127

2637

>>> rfc3339_duration_to_delta("P7D")

2128

2638

datetime.timedelta(7)

2129

2639

>>> rfc3339_duration_to_delta("PT60S")

2139

2649

>>> rfc3339_duration_to_delta("P1DT3M20S")

2140

2650

datetime.timedelta(1, 200)

2141

2651

"""

2142

2652

2143

2653

# Parsing an RFC 3339 duration with regular expressions is not

2144

2654

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

2145

2655

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

2146

2656

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

2147

2657

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

2148

2658

# avoid excessive use of external libraries.

2149

2659

2150

2660

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

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

2661

Token = collections.namedtuple("Token", (

2662

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

2663

# a "group" containing digits

2664

"value", # datetime.timedelta or None

2665

"followers")) # Tokens valid after this token

2160

2666

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

2161

2667

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

2162

2668

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

2163

2669

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

2164

2670

datetime.timedelta(seconds=1),

2165

frozenset((token_end,)))

2671

frozenset((token_end, )))

2166

2672

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

2167

2673

datetime.timedelta(minutes=1),

2168

2674

frozenset((token_second, token_end)))

2184

2690

frozenset((token_month, token_end)))

2185

2691

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

2186

2692

datetime.timedelta(weeks=1),

2187

frozenset((token_end,)))

2693

frozenset((token_end, )))

2188

2694

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

2189

2695

frozenset((token_year, token_month,

2190

2696

token_day, token_time,

2191

token_week))),

2192

# Define starting values

2193

value = datetime.timedelta() # Value so far

2697

token_week)))

2698

# Define starting values:

2699

# Value so far

2700

value = datetime.timedelta()

2194

2701

found_token = None

2195

followers = frozenset(token_duration,) # Following valid tokens

2196

s = duration # String left to parse

2702

# Following valid tokens

2703

followers = frozenset((token_duration, ))

2704

# String left to parse

2705

s = duration

2197

2706

# Loop until end token is found

2198

2707

while found_token is not token_end:

2199

2708

# Search for any currently valid tokens

2215

2724

break

2216

2725

else:

2217

2726

# No currently valid tokens were found

2218

raise ValueError("Invalid RFC 3339 duration")

2727

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

2728

.format(duration))

2219

2729

# End token found

2220

2730

return value

2221

2731

2222

2732

2223

2733

def string_to_delta(interval):

2224

2734

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

2225

2735

2226

2736

>>> string_to_delta('7d')

2227

2737

datetime.timedelta(7)

2228

2738

>>> string_to_delta('60s')

2236

2746

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

2237

2747

datetime.timedelta(0, 330)

2238

2748

"""

2239

2749

2240

2750

try:

2241

2751

return rfc3339_duration_to_delta(interval)

2242

2752

except ValueError:

2243

2753

pass

2244

2754

2245

2755

timevalue = datetime.timedelta(0)

2246

2756

for s in interval.split():

2247

2757

try:

2248

suffix = unicode(s[-1])

2758

suffix = s[-1]

2249

2759

value = int(s[:-1])

2250

2760

if suffix == "d":

2251

2761

delta = datetime.timedelta(value)

2258

2768

elif suffix == "w":

2259

2769

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

2260

2770

else:

2261

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

2262

.format(suffix))

2771

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

2263

2772

except IndexError as e:

2264

2773

raise ValueError(*(e.args))

2265

2774

timevalue += delta

2266

2775

return timevalue

2267

2776

2268

2777

2269

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

2778

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

2270

2779

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

2271

2780

2272

2781

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

2273

2782

if os.fork():

2274

2783

sys.exit()

2282

2791

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

2283

2792

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

2284

2793

raise OSError(errno.ENODEV,

2285

"{0} not a character device"

2794

"{} not a character device"

2286

2795

.format(os.devnull))

2287

2796

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

2288

2797

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

2292

2801

2293

2802

2294

2803

def main():

2295

2804

2296

2805

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

2297

2806

# Parsing of options, both command line and config file

2298

2807

2299

2808

parser = argparse.ArgumentParser()

2300

2809

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

2301

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

2810

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

2302

2811

help="show version number and exit")

2303

2812

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

2304

2813

help="Bind to interface IF")

2340

2849

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

2341

2850

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

2342

2851

default=None)

2343

2852

2344

2853

options = parser.parse_args()

2345

2854

2346

2855

if options.check:

2347

2856

import doctest

2348

2857

fail_count, test_count = doctest.testmod()

2349

2858

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

2350

2859

2351

2860

# Default values for config file for server-global settings

2352

server_defaults = { "interface": "",

2353

"address": "",

2354

"port": "",

2355

"debug": "False",

2356

"priority":

2357

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

2358

"servicename": "Mandos",

2359

"use_dbus": "True",

2360

"use_ipv6": "True",

2361

"debuglevel": "",

2362

"restore": "True",

2363

"socket": "",

2364

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

2365

"foreground": "False",

2366

"zeroconf": "True",

2367

}

2368

2861

server_defaults = {"interface": "",

2862

"address": "",

2863

"port": "",

2864

"debug": "False",

2865

"priority":

2866

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

2867

":+SIGN-DSA-SHA256",

2868

"servicename": "Mandos",

2869

"use_dbus": "True",

2870

"use_ipv6": "True",

2871

"debuglevel": "",

2872

"restore": "True",

2873

"socket": "",

2874

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

2875

"foreground": "False",

2876

"zeroconf": "True",

2877

}

2878

2369

2879

# Parse config file for server-global settings

2370

2880

server_config = configparser.SafeConfigParser(server_defaults)

2371

2881

del server_defaults

2372

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

2373

"mandos.conf"))

2882

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

2374

2883

# Convert the SafeConfigParser object to a dict

2375

2884

server_settings = server_config.defaults()

2376

2885

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

2390

2899

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

2391

2900

["socket"])

2392

2901

del server_config

2393

2902

2394

2903

# Override the settings from the config file with command line

2395

2904

# options, if set.

2396

2905

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

2397

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

2398

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

2399

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

2906

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

2907

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

2908

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

2400

2909

value = getattr(options, option)

2401

2910

if value is not None:

2402

2911

server_settings[option] = value

2403

2912

del options

2404

2913

# Force all strings to be unicode

2405

2914

for option in server_settings.keys():

2406

if type(server_settings[option]) is str:

2407

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

2915

if isinstance(server_settings[option], bytes):

2916

server_settings[option] = (server_settings[option]

2917

.decode("utf-8"))

2408

2918

# Force all boolean options to be boolean

2409

2919

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

2410

2920

"foreground", "zeroconf"):

2413

2923

if server_settings["debug"]:

2414

2924

server_settings["foreground"] = True

2415

2925

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

2416

2926

2417

2927

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

2418

2419

if (not server_settings["zeroconf"] and

2420

not (server_settings["port"]

2421

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

2422

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

2423

" Zeroconf")

2424

2928

2929

if (not server_settings["zeroconf"]

2930

and not (server_settings["port"]

2931

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

2932

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

2933

2425

2934

# For convenience

2426

2935

debug = server_settings["debug"]

2427

2936

debuglevel = server_settings["debuglevel"]

2431

2940

stored_state_file)

2432

2941

foreground = server_settings["foreground"]

2433

2942

zeroconf = server_settings["zeroconf"]

2434

2943

2435

2944

if debug:

2436

2945

initlogger(debug, logging.DEBUG)

2437

2946

else:

2440

2949

else:

2441

2950

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

2442

2951

initlogger(debug, level)

2443

2952

2444

2953

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

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2450

2954

syslogger.setFormatter(

2955

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

2956

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

2957

server_settings["servicename"])))

2958

2451

2959

# Parse config file with clients

2452

2960

client_config = configparser.SafeConfigParser(Client

2453

2961

.client_defaults)

2454

2962

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

2455

2963

"clients.conf"))

2456

2964

2457

2965

global mandos_dbus_service

2458

2966

mandos_dbus_service = None

2459

2967

2460

2968

socketfd = None

2461

2969

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

2462

2970

socketfd = server_settings["socket"]

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

2971

tcp_server = MandosServer(

2972

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

2973

ClientHandler,

2974

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

2975

use_ipv6=use_ipv6,

2976

gnutls_priority=server_settings["priority"],

2977

use_dbus=use_dbus,

2978

socketfd=socketfd)

2473

2979

if not foreground:

2474

2980

pidfilename = "/run/mandos.pid"

2475

2981

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

2476

2982

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

2477

2983

pidfile = None

2478

2984

try:

2479

pidfile = open(pidfilename, "w")

2985

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

2480

2986

except IOError as e:

2481

2987

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

2482

2988

exc_info=e)

2483

2484

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

2989

2990

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

2991

("mandos", "mandos"),

2992

("nobody", "nogroup")):

2485

2993

try:

2486

2994

uid = pwd.getpwnam(name).pw_uid

2487

gid = pwd.getpwnam(name).pw_gid

2995

gid = pwd.getpwnam(group).pw_gid

2488

2996

break

2489

2997

except KeyError:

2490

2998

continue

2494

3002

try:

2495

3003

os.setgid(gid)

2496

3004

os.setuid(uid)

3005

if debug:

3006

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

3007

gid))

2497

3008

except OSError as error:

3009

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

3010

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

2498

3011

if error.errno != errno.EPERM:

2499

3012

raise

2500

3013

2501

3014

if debug:

2502

3015

# Enable all possible GnuTLS debugging

2503

3016

2504

3017

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

2505

3018

# - GnuTLS manual

2506

gnutls.library.functions.gnutls_global_set_log_level(11)

2507

2508

@gnutls.library.types.gnutls_log_func

3019

gnutls.global_set_log_level(11)

3020

3021

@gnutls.log_func

2509

3022

def debug_gnutls(level, string):

2510

3023

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

2511

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2514

3024

3025

gnutls.global_set_log_function(debug_gnutls)

3026

2515

3027

# Redirect stdin so all checkers get /dev/null

2516

3028

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

2517

3029

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

2518

3030

if null > 2:

2519

3031

os.close(null)

2520

3032

2521

3033

# Need to fork before connecting to D-Bus

2522

3034

if not foreground:

2523

3035

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

2524

3036

daemon()

2525

2526

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

2527

# need to inform gobject that threads will be used.

2528

gobject.threads_init()

2529

3037

3038

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

3039

# to inform GLib that threads will be used.

3040

GLib.threads_init()

3041

2530

3042

global main_loop

2531

3043

# From the Avahi example code

2532

3044

DBusGMainLoop(set_as_default=True)

2533

main_loop = gobject.MainLoop()

3045

main_loop = GLib.MainLoop()

2534

3046

bus = dbus.SystemBus()

2535

3047

# End of Avahi example code

2536

3048

if use_dbus:

2537

3049

try:

2538

3050

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

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

3051

bus,

3052

do_not_queue=True)

3053

old_bus_name = dbus.service.BusName(

3054

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

3055

do_not_queue=True)

3056

except dbus.exceptions.DBusException as e:

2544

3057

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

2545

3058

use_dbus = False

2546

3059

server_settings["use_dbus"] = False

2547

3060

tcp_server.use_dbus = False

2548

3061

if zeroconf:

2549

3062

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

3063

service = AvahiServiceToSyslog(

3064

name=server_settings["servicename"],

3065

servicetype="_mandos._tcp",

3066

protocol=protocol,

3067

bus=bus)

2554

3068

if server_settings["interface"]:

2555

service.interface = (if_nametoindex

2556

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

2557

3069

service.interface = if_nametoindex(

3070

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

3071

2558

3072

global multiprocessing_manager

2559

3073

multiprocessing_manager = multiprocessing.Manager()

2560

3074

2561

3075

client_class = Client

2562

3076

if use_dbus:

2563

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

2564

3077

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

3078

2565

3079

client_settings = Client.config_parser(client_config)

2566

3080

old_client_settings = {}

2567

3081

clients_data = {}

2568

3082

2569

3083

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

2570

3084

global wnull

2571

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

3085

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

2572

3086

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

2573

3087

# mode

2574

3088

if debug or not foreground:

2575

3089

wnull.close()

2576

3090

2577

3091

# Get client data and settings from last running state.

2578

3092

if server_settings["restore"]:

2579

3093

try:

2580

3094

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

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

3095

if sys.version_info.major == 2:

3096

clients_data, old_client_settings = pickle.load(

3097

stored_state)

3098

else:

3099

bytes_clients_data, bytes_old_client_settings = (

3100

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

3101

# Fix bytes to strings

3102

# clients_data

3103

# .keys()

3104

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

3105

if isinstance(key, bytes)

3106

else key): value

3107

for key, value in

3108

bytes_clients_data.items()}

3109

del bytes_clients_data

3110

for key in clients_data:

3111

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

3112

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

3113

for k, v in

3114

clients_data[key].items()}

3115

clients_data[key] = value

3116

# .client_structure

3117

value["client_structure"] = [

3118

(s.decode("utf-8")

3119

if isinstance(s, bytes)

3120

else s) for s in

3121

value["client_structure"]]

3122

# .name & .host

3123

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

3124

if isinstance(value[k], bytes):

3125

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

3126

# old_client_settings

3127

# .keys()

3128

old_client_settings = {

3129

(key.decode("utf-8")

3130

if isinstance(key, bytes)

3131

else key): value

3132

for key, value in

3133

bytes_old_client_settings.items()}

3134

del bytes_old_client_settings

3135

# .host

3136

for value in old_client_settings.values():

3137

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

3138

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

3139

.decode("utf-8"))

2583

3140

os.remove(stored_state_path)

2584

3141

except IOError as e:

2585

3142

if e.errno == errno.ENOENT:

2586

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

2587

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

3143

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

3144

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

2588

3145

else:

2589

3146

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

2590

3147

exc_info=e)

2591

3148

raise

2592

3149

except EOFError as e:

2593

3150

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

2594

"EOFError:", exc_info=e)

2595

3151

"EOFError:",

3152

exc_info=e)

3153

2596

3154

with PGPEngine() as pgp:

2597

for client_name, client in clients_data.iteritems():

3155

for client_name, client in clients_data.items():

2598

3156

# Skip removed clients

2599

3157

if client_name not in client_settings:

2600

3158

continue

2601

3159

2602

3160

# Decide which value to use after restoring saved state.

2603

3161

# We have three different values: Old config file,

2604

3162

# new config file, and saved state.

2609

3167

# For each value in new config, check if it

2610

3168

# differs from the old config value (Except for

2611

3169

# the "secret" attribute)

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

3170

if (name != "secret"

3171

and (value !=

3172

old_client_settings[client_name][name])):

2615

3173

client[name] = value

2616

3174

except KeyError:

2617

3175

pass

2618

3176

2619

3177

# Clients who has passed its expire date can still be

2620

# enabled if its last checker was successful. Clients

3178

# enabled if its last checker was successful. A Client

2621

3179

# whose checker succeeded before we stored its state is

2622

3180

# assumed to have successfully run all checkers during

2623

3181

# downtime.

2625

3183

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

2626

3184

if not client["last_checked_ok"]:

2627

3185

logger.warning(

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

3186

"disabling client {} - Client never "

3187

"performed a successful checker".format(

3188

client_name))

2631

3189

client["enabled"] = False

2632

3190

elif client["last_checker_status"] != 0:

2633

3191

logger.warning(

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

3192

"disabling client {} - Client last"

3193

" checker failed with error code"

3194

" {}".format(

3195

client_name,

3196

client["last_checker_status"]))

2638

3197

client["enabled"] = False

2639

3198

else:

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

3199

client["expires"] = (

3200

datetime.datetime.utcnow()

3201

+ client["timeout"])

2643

3202

logger.debug("Last checker succeeded,"

2644

" keeping {0} enabled"

2645

.format(client_name))

3203

" keeping {} enabled".format(

3204

client_name))

2646

3205

try:

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

3206

client["secret"] = pgp.decrypt(

3207

client["encrypted_secret"],

3208

client_settings[client_name]["secret"])

2651

3209

except PGPError:

2652

3210

# If decryption fails, we use secret from new settings

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2657

3211

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

3212

client_name))

3213

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

3214

["secret"])

3215

2658

3216

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

2659

3217

for client_name in (set(old_client_settings)

2660

3218

- set(client_settings)):

2662

3220

for client_name in (set(client_settings)

2663

3221

- set(old_client_settings)):

2664

3222

clients_data[client_name] = client_settings[client_name]

2665

3223

2666

3224

# Create all client objects

2667

for client_name, client in clients_data.iteritems():

3225

for client_name, client in clients_data.items():

2668

3226

tcp_server.clients[client_name] = client_class(

2669

name = client_name, settings = client,

2670

server_settings = server_settings)

2671

3227

name=client_name,

3228

settings=client,

3229

server_settings=server_settings)

3230

2672

3231

if not tcp_server.clients:

2673

3232

logger.warning("No clients defined")

2674

3233

2675

3234

if not foreground:

2676

3235

if pidfile is not None:

3236

pid = os.getpid()

2677

3237

try:

2678

3238

with pidfile:

2679

pid = os.getpid()

2680

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

3239

print(pid, file=pidfile)

2681

3240

except IOError:

2682

3241

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

2683

3242

pidfilename, pid)

2684

3243

del pidfile

2685

3244

del pidfilename

2686

2687

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

2688

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

2689

3245

3246

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

3247

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3248

lambda: main_loop.quit() and False)

3249

2690

3250

if use_dbus:

2691

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

2692

"se.bsnet.fukt.Mandos"})

2693

class MandosDBusService(DBusObjectWithProperties):

3251

3252

@alternate_dbus_interfaces(

3253

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

3254

class MandosDBusService(DBusObjectWithObjectManager):

2694

3255

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

3256

2695

3257

def __init__(self):

2696

3258

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

3259

2697

3260

_interface = "se.recompile.Mandos"

2698

2699

@dbus_interface_annotations(_interface)

2700

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2704

3261

2705

3262

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

2706

3263

def ClientAdded(self, objpath):

2707

3264

"D-Bus signal"

2708

3265

pass

2709

3266

2710

3267

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

2711

3268

def ClientNotFound(self, fingerprint, address):

2712

3269

"D-Bus signal"

2713

3270

pass

2714

3271

3272

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

3273

"true"})

2715

3274

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

2716

3275

def ClientRemoved(self, objpath, name):

2717

3276

"D-Bus signal"

2718

3277

pass

2719

3278

3279

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

3280

"true"})

2720

3281

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

2721

3282

def GetAllClients(self):

2722

3283

"D-Bus method"

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2725

tcp_server.clients.itervalues())

2726

3284

return dbus.Array(c.dbus_object_path for c in

3285

tcp_server.clients.values())

3286

3287

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

3288

"true"})

2727

3289

@dbus.service.method(_interface,

2728

3290

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

2729

3291

def GetAllClientsWithProperties(self):

2730

3292

"D-Bus method"

2731

3293

return dbus.Dictionary(

2732

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

2733

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

3294

{c.dbus_object_path: c.GetAll(

3295

"se.recompile.Mandos.Client")

3296

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

2734

3297

signature="oa{sv}")

2735

3298

2736

3299

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

2737

3300

def RemoveClient(self, object_path):

2738

3301

"D-Bus method"

2739

for c in tcp_server.clients.itervalues():

3302

for c in tcp_server.clients.values():

2740

3303

if c.dbus_object_path == object_path:

2741

3304

del tcp_server.clients[c.name]

2742

3305

c.remove_from_connection()

2743

# Don't signal anything except ClientRemoved

3306

# Don't signal the disabling

2744

3307

c.disable(quiet=True)

2745

# Emit D-Bus signal

2746

self.ClientRemoved(object_path, c.name)

3308

# Emit D-Bus signal for removal

3309

self.client_removed_signal(c)

2747

3310

return

2748

3311

raise KeyError(object_path)

2749

3312

2750

3313

del _interface

2751

3314

3315

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3316

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

3317

def GetManagedObjects(self):

3318

"""D-Bus method"""

3319

return dbus.Dictionary(

3320

{client.dbus_object_path:

3321

dbus.Dictionary(

3322

{interface: client.GetAll(interface)

3323

for interface in

3324

client._get_all_interface_names()})

3325

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

3326

3327

def client_added_signal(self, client):

3328

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

3329

if use_dbus:

3330

# New standard signal

3331

self.InterfacesAdded(

3332

client.dbus_object_path,

3333

dbus.Dictionary(

3334

{interface: client.GetAll(interface)

3335

for interface in

3336

client._get_all_interface_names()}))

3337

# Old signal

3338

self.ClientAdded(client.dbus_object_path)

3339

3340

def client_removed_signal(self, client):

3341

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

3342

if use_dbus:

3343

# New standard signal

3344

self.InterfacesRemoved(

3345

client.dbus_object_path,

3346

client._get_all_interface_names())

3347

# Old signal

3348

self.ClientRemoved(client.dbus_object_path,

3349

client.name)

3350

2752

3351

mandos_dbus_service = MandosDBusService()

2753

3352

3353

# Save modules to variables to exempt the modules from being

3354

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

3355

mp = multiprocessing

3356

wn = wnull

3357

2754

3358

def cleanup():

2755

3359

"Cleanup function; run on exit"

2756

3360

if zeroconf:

2757

3361

service.cleanup()

2758

2759

multiprocessing.active_children()

2760

wnull.close()

3362

3363

mp.active_children()

3364

wn.close()

2761

3365

if not (tcp_server.clients or client_settings):

2762

3366

return

2763

3367

2764

3368

# Store client before exiting. Secrets are encrypted with key

2765

3369

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

2766

3370

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

2767

3371

clients = {}

2768

3372

with PGPEngine() as pgp:

2769

for client in tcp_server.clients.itervalues():

3373

for client in tcp_server.clients.values():

2770

3374

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

2771

3375

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

2772

3376

key)

2773

3377

client_dict = {}

2774

3378

2775

3379

# A list of attributes that can not be pickled

2776

3380

# + secret.

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

3381

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

3382

"checker", "server_settings"}

3383

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

3384

.Object):

2781

3385

exclude.add(name)

2782

3386

2783

3387

client_dict["encrypted_secret"] = (client

2784

3388

.encrypted_secret)

2785

3389

for attr in client.client_structure:

2786

3390

if attr not in exclude:

2787

3391

client_dict[attr] = getattr(client, attr)

2788

3392

2789

3393

clients[client.name] = client_dict

2790

3394

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

2791

3395

2792

3396

try:

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

2797

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

2798

tempname=stored_state.name

3397

with tempfile.NamedTemporaryFile(

3398

mode='wb',

3399

suffix=".pickle",

3400

prefix='clients-',

3401

dir=os.path.dirname(stored_state_path),

3402

delete=False) as stored_state:

3403

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

3404

protocol=2)

3405

tempname = stored_state.name

2799

3406

os.rename(tempname, stored_state_path)

2800

3407

except (IOError, OSError) as e:

2801

3408

if not debug:

2804

3411

except NameError:

2805

3412

pass

2806

3413

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

2807

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

3414

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

2808

3415

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

2809

3416

else:

2810

3417

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

2811

3418

exc_info=e)

2812

3419

raise

2813

3420

2814

3421

# Delete all clients, and settings from config

2815

3422

while tcp_server.clients:

2816

3423

name, client = tcp_server.clients.popitem()

2817

3424

if use_dbus:

2818

3425

client.remove_from_connection()

2819

# Don't signal anything except ClientRemoved

3426

# Don't signal the disabling

2820

3427

client.disable(quiet=True)

3428

# Emit D-Bus signal for removal

2821

3429

if use_dbus:

2822

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

3430

mandos_dbus_service.client_removed_signal(client)

2826

3431

client_settings.clear()

2827

3432

2828

3433

atexit.register(cleanup)

2829

2830

for client in tcp_server.clients.itervalues():

3434

3435

for client in tcp_server.clients.values():

2831

3436

if use_dbus:

2832

# Emit D-Bus signal

2833

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3437

# Emit D-Bus signal for adding

3438

mandos_dbus_service.client_added_signal(client)

2834

3439

# Need to initiate checking of clients

2835

3440

if client.enabled:

2836

3441

client.init_checker()

2837

3442

2838

3443

tcp_server.enable()

2839

3444

tcp_server.server_activate()

2840

3445

2841

3446

# Find out what port we got

2842

3447

if zeroconf:

2843

3448

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

2848

3453

else: # IPv4

2849

3454

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

2850

3455

*tcp_server.socket.getsockname())

2851

2852

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

2853

3456

3457

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

3458

2854

3459

try:

2855

3460

if zeroconf:

2856

3461

# From the Avahi example code

2861

3466

cleanup()

2862

3467

sys.exit(1)

2863

3468

# End of Avahi example code

2864

2865

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

2866

lambda *args, **kwargs:

2867

(tcp_server.handle_request

2868

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

2869

3469

3470

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

3471

lambda *args, **kwargs:

3472

(tcp_server.handle_request

3473

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

3474

2870

3475

logger.debug("Starting main loop")

2871

3476

main_loop.run()

2872

3477

except AvahiError as error:

2881

3486

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

2882

3487

cleanup()

2883

3488

3489

2884

3490

if __name__ == '__main__':

2885

3491

main()