/mandos/release : revision 237.7.281

1

#!/usr/bin/python3 -bI

2

# -*- coding: utf-8; lexical-binding: t -*-

3

#

1

#!/usr/bin/python2.7

2

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

3

#

4

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

5

#

5

#

6

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

7

# service publisher, downloaded from

8

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

9

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

10

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

11

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

12

#

12

#

13

# Everything else is

14

15

16

#

17

# This file is part of Mandos.

18

#

19

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

20

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

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

21

19

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

22

20

# (at your option) any later version.

23

21

#

24

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

25

# WITHOUT ANY WARRANTY; without even the implied warranty of

22

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

23

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

26

24

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

27

25

# GNU General Public License for more details.

28

#

26

#

29

27

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

30

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

31

#

28

# along with this program. If not, see

29

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

30

#

32

31

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

33

#

32

#

33

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

try:

38

from future_builtins import *

39

except ImportError:

40

pass

37

from future_builtins import *

41

38

42

import sys

43

import unittest

39

import SocketServer as socketserver

40

import socket

44

41

import argparse

45

import logging

46

import os

47

try:

48

import SocketServer as socketserver

49

except ImportError:

50

import socketserver

51

import socket

52

42

import datetime

53

43

import errno

54

try:

55

import ConfigParser as configparser

56

except ImportError:

57

import configparser

44

import gnutls.crypto

45

import gnutls.connection

46

import gnutls.errors

47

import gnutls.library.functions

48

import gnutls.library.constants

49

import gnutls.library.types

50

import ConfigParser as configparser

51

import sys

58

52

import re

53

import os

59

54

import signal

60

55

import subprocess

61

56

import atexit

62

57

import stat

58

import logging

63

59

import logging.handlers

64

60

import pwd

65

61

import contextlib

66

62

import struct

67

63

import fcntl

68

64

import functools

69

try:

70

import cPickle as pickle

71

except ImportError:

72

import pickle

65

import cPickle as pickle

73

66

import multiprocessing

74

67

import types

75

68

import binascii

76

69

import tempfile

77

70

import itertools

78

71

import collections

79

import codecs

80

import random

81

import shlex

82

72

83

73

import dbus

84

74

import dbus.service

85

import gi

86

from gi.repository import GLib

75

import gobject

76

import avahi

87

77

from dbus.mainloop.glib import DBusGMainLoop

88

78

import ctypes

89

79

import ctypes.util

90

80

import xml.dom.minidom

91

81

import inspect

92

82

93

if sys.version_info.major == 2:

94

__metaclass__ = type

95

str = unicode

96

input = raw_input

97

98

# Add collections.abc.Callable if it does not exist

99

try:

100

collections.abc.Callable

101

except AttributeError:

102

class abc:

103

Callable = collections.Callable

104

collections.abc = abc

105

del abc

106

107

# Add shlex.quote if it does not exist

108

try:

109

shlex.quote

110

except AttributeError:

111

shlex.quote = re.escape

112

113

# Show warnings by default

114

if not sys.warnoptions:

115

import warnings

116

warnings.simplefilter("default")

117

118

# Try to find the value of SO_BINDTODEVICE:

119

try:

120

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

121

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

83

try:

122

84

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

123

85

except AttributeError:

124

86

try:

125

# This is where SO_BINDTODEVICE was up to and including Python

126

# 2.6, and also 3.2:

127

87

from IN import SO_BINDTODEVICE

128

88

except ImportError:

129

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

130

# Try running the C preprocessor:

131

try:

132

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

133

"/dev/stdin"],

134

stdin=subprocess.PIPE,

135

stdout=subprocess.PIPE)

136

stdout = cc.communicate(

137

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

138

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

139

except (OSError, ValueError, IndexError):

140

# No value found

141

SO_BINDTODEVICE = None

142

143

if sys.version_info < (3, 2):

144

configparser.Configparser = configparser.SafeConfigParser

145

146

version = "1.8.15"

89

SO_BINDTODEVICE = None

90

91

if sys.version_info.major == 2:

92

str = unicode

93

94

version = "1.6.8"

147

95

stored_state_file = "clients.pickle"

148

96

149

log = logging.getLogger(os.path.basename(sys.argv[0]))

150

logging.captureWarnings(True) # Show warnings via the logging system

97

logger = logging.getLogger()

151

98

syslogger = None

152

99

153

100

try:

154

if_nametoindex = ctypes.cdll.LoadLibrary(

155

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

101

if_nametoindex = (ctypes.cdll.LoadLibrary

102

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

103

.if_nametoindex)

156

104

except (OSError, AttributeError):

157

158

105

def if_nametoindex(interface):

159

106

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

160

107

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

165

112

return interface_index

166

113

167

114

168

def copy_function(func):

169

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

170

if sys.version_info.major == 2:

171

return types.FunctionType(func.func_code,

172

func.func_globals,

173

func.func_name,

174

func.func_defaults,

175

func.func_closure)

176

else:

177

return types.FunctionType(func.__code__,

178

func.__globals__,

179

func.__name__,

180

func.__defaults__,

181

func.__closure__)

182

183

184

115

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

185

116

"""init logger and add loglevel"""

186

117

187

118

global syslogger

188

syslogger = (logging.handlers.SysLogHandler(

189

facility=logging.handlers.SysLogHandler.LOG_DAEMON,

190

address="/dev/log"))

119

syslogger = (logging.handlers.SysLogHandler

120

(facility =

121

logging.handlers.SysLogHandler.LOG_DAEMON,

122

address = "/dev/log"))

191

123

syslogger.setFormatter(logging.Formatter

192

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

193

" %(message)s"))

194

log.addHandler(syslogger)

195

124

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

125

' %(message)s'))

126

logger.addHandler(syslogger)

127

196

128

if debug:

197

129

console = logging.StreamHandler()

198

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

199

" [%(process)d]:"

200

" %(levelname)s:"

201

" %(message)s"))

202

log.addHandler(console)

203

log.setLevel(level)

130

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

131

' [%(process)d]:'

132

' %(levelname)s:'

133

' %(message)s'))

134

logger.addHandler(console)

135

logger.setLevel(level)

204

136

205

137

206

138

class PGPError(Exception):

208

140

pass

209

141

210

142

211

class PGPEngine:

143

class PGPEngine(object):

212

144

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

213

214

145

def __init__(self):

215

146

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

216

self.gpg = "gpg"

217

try:

218

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

219

for line in output.splitlines():

220

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

221

if name == b"gpg":

222

self.gpg = path

223

break

224

except OSError as e:

225

if e.errno != errno.ENOENT:

226

raise

227

self.gnupgargs = ["--batch",

228

"--homedir", self.tempdir,

229

"--force-mdc",

230

"--quiet"]

231

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

232

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

233

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

234

147

self.gnupgargs = ['--batch',

148

'--home', self.tempdir,

149

'--force-mdc',

150

'--quiet',

151

'--no-use-agent']

152

235

153

def __enter__(self):

236

154

return self

237

155

238

156

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

239

157

self._cleanup()

240

158

return False

241

159

242

160

def __del__(self):

243

161

self._cleanup()

244

162

245

163

def _cleanup(self):

246

164

if self.tempdir is not None:

247

165

# Delete contents of tempdir

248

166

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

249

topdown=False):

167

topdown = False):

250

168

for filename in files:

251

169

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

252

170

for dirname in dirs:

254

172

# Remove tempdir

255

173

os.rmdir(self.tempdir)

256

174

self.tempdir = None

257

175

258

176

def password_encode(self, password):

259

177

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

260

178

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

265

183

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

266

184

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

267

185

return encoded

268

186

269

187

def encrypt(self, data, password):

270

188

passphrase = self.password_encode(password)

271

with tempfile.NamedTemporaryFile(

272

dir=self.tempdir) as passfile:

189

with tempfile.NamedTemporaryFile(dir=self.tempdir

190

) as passfile:

273

191

passfile.write(passphrase)

274

192

passfile.flush()

275

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

276

"--passphrase-file",

193

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

194

'--passphrase-file',

277

195

passfile.name]

278

196

+ self.gnupgargs,

279

stdin=subprocess.PIPE,

280

stdout=subprocess.PIPE,

281

stderr=subprocess.PIPE)

282

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

197

stdin = subprocess.PIPE,

198

stdout = subprocess.PIPE,

199

stderr = subprocess.PIPE)

200

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

283

201

if proc.returncode != 0:

284

202

raise PGPError(err)

285

203

return ciphertext

286

204

287

205

def decrypt(self, data, password):

288

206

passphrase = self.password_encode(password)

289

with tempfile.NamedTemporaryFile(

290

dir=self.tempdir) as passfile:

207

with tempfile.NamedTemporaryFile(dir = self.tempdir

208

) as passfile:

291

209

passfile.write(passphrase)

292

210

passfile.flush()

293

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

294

"--passphrase-file",

211

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

212

'--passphrase-file',

295

213

passfile.name]

296

214

+ self.gnupgargs,

297

stdin=subprocess.PIPE,

298

stdout=subprocess.PIPE,

299

stderr=subprocess.PIPE)

300

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

215

stdin = subprocess.PIPE,

216

stdout = subprocess.PIPE,

217

stderr = subprocess.PIPE)

218

decrypted_plaintext, err = proc.communicate(input

219

= data)

301

220

if proc.returncode != 0:

302

221

raise PGPError(err)

303

222

return decrypted_plaintext

304

223

305

224

306

# Pretend that we have an Avahi module

307

class avahi:

308

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

309

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

310

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

311

PROTO_INET = 0 # avahi-common/address.h

312

PROTO_INET6 = 1 # avahi-common/address.h

313

DBUS_NAME = "org.freedesktop.Avahi"

314

DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"

315

DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"

316

DBUS_PATH_SERVER = "/"

317

318

@staticmethod

319

def string_array_to_txt_array(t):

320

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

321

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

322

ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h

323

ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h

324

ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h

325

SERVER_INVALID = 0 # avahi-common/defs.h

326

SERVER_REGISTERING = 1 # avahi-common/defs.h

327

SERVER_RUNNING = 2 # avahi-common/defs.h

328

SERVER_COLLISION = 3 # avahi-common/defs.h

329

SERVER_FAILURE = 4 # avahi-common/defs.h

330

331

332

225

class AvahiError(Exception):

333

226

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

334

227

self.value = value

335

228

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

336

229

**kwargs)

337

230

338

339

231

class AvahiServiceError(AvahiError):

340

232

pass

341

233

342

343

234

class AvahiGroupError(AvahiError):

344

235

pass

345

236

346

237

347

class AvahiService:

238

class AvahiService(object):

348

239

"""An Avahi (Zeroconf) service.

349

240

350

241

Attributes:

351

242

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

352

243

Used to optionally bind to the specified interface.

353

354

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

244

245

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

355

246

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

356

247

port: integer; what port to announce

357

248

TXT: list of strings; TXT record for the service

364

255

server: D-Bus Server

365

256

bus: dbus.SystemBus()

366

257

"""

367

368

def __init__(self,

369

interface=avahi.IF_UNSPEC,

370

name=None,

371

servicetype=None,

372

port=None,

373

TXT=None,

374

domain="",

375

host="",

376

max_renames=32768,

377

protocol=avahi.PROTO_UNSPEC,

378

bus=None):

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):

379

263

self.interface = interface

380

264

self.name = name

381

265

self.type = servicetype

390

274

self.server = None

391

275

self.bus = bus

392

276

self.entry_group_state_changed_match = None

393

394

def rename(self, remove=True):

277

278

def rename(self):

395

279

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

396

280

if self.rename_count >= self.max_renames:

397

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

398

" after %i retries, exiting.",

399

self.rename_count)

281

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

282

" after %i retries, exiting.",

283

self.rename_count)

400

284

raise AvahiServiceError("Too many renames")

401

self.name = str(

402

self.server.GetAlternativeServiceName(self.name))

285

self.name = str(self.server

286

.GetAlternativeServiceName(self.name))

287

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

288

self.name)

289

self.remove()

290

try:

291

self.add()

292

except dbus.exceptions.DBusException as error:

293

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

294

self.cleanup()

295

os._exit(1)

403

296

self.rename_count += 1

404

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

405

self.name)

406

if remove:

407

self.remove()

408

try:

409

self.add()

410

except dbus.exceptions.DBusException as error:

411

if (error.get_dbus_name()

412

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

413

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

414

return self.rename(remove=False)

415

else:

416

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

417

self.cleanup()

418

os._exit(1)

419

297

420

298

def remove(self):

421

299

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

422

300

if self.entry_group_state_changed_match is not None:

424

302

self.entry_group_state_changed_match = None

425

303

if self.group is not None:

426

304

self.group.Reset()

427

305

428

306

def add(self):

429

307

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

430

308

self.remove()

435

313

avahi.DBUS_INTERFACE_ENTRY_GROUP)

436

314

self.entry_group_state_changed_match = (

437

315

self.group.connect_to_signal(

438

"StateChanged", self.entry_group_state_changed))

439

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

440

self.name, self.type)

316

'StateChanged', self.entry_group_state_changed))

317

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

318

self.name, self.type)

441

319

self.group.AddService(

442

320

self.interface,

443

321

self.protocol,

447

325

dbus.UInt16(self.port),

448

326

avahi.string_array_to_txt_array(self.TXT))

449

327

self.group.Commit()

450

328

451

329

def entry_group_state_changed(self, state, error):

452

330

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

453

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

454

331

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

332

455

333

if state == avahi.ENTRY_GROUP_ESTABLISHED:

456

log.debug("Zeroconf service established.")

334

logger.debug("Zeroconf service established.")

457

335

elif state == avahi.ENTRY_GROUP_COLLISION:

458

log.info("Zeroconf service name collision.")

336

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

459

337

self.rename()

460

338

elif state == avahi.ENTRY_GROUP_FAILURE:

461

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

462

str(error))

463

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

464

339

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

340

str(error))

341

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

342

.format(error))

343

465

344

def cleanup(self):

466

345

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

467

346

if self.group is not None:

472

351

pass

473

352

self.group = None

474

353

self.remove()

475

354

476

355

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

477

356

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

478

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

479

bad_states = {

480

avahi.SERVER_INVALID: "Zeroconf server invalid",

481

avahi.SERVER_REGISTERING: None,

482

avahi.SERVER_COLLISION: "Zeroconf server name collision",

483

avahi.SERVER_FAILURE: "Zeroconf server failure",

484

}

357

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" }

485

365

if state in bad_states:

486

366

if bad_states[state] is not None:

487

367

if error is None:

488

log.error(bad_states[state])

368

logger.error(bad_states[state])

489

369

else:

490

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

370

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

491

371

self.cleanup()

492

372

elif state == avahi.SERVER_RUNNING:

493

try:

494

self.add()

495

except dbus.exceptions.DBusException as error:

496

if (error.get_dbus_name()

497

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

498

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

499

return self.rename(remove=False)

500

else:

501

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

502

self.cleanup()

503

os._exit(1)

373

self.add()

504

374

else:

505

375

if error is None:

506

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

376

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

507

377

else:

508

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

509

378

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

379

510

380

def activate(self):

511

381

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

512

382

if self.server is None:

516

386

follow_name_owner_changes=True),

517

387

avahi.DBUS_INTERFACE_SERVER)

518

388

self.server.connect_to_signal("StateChanged",

519

self.server_state_changed)

389

self.server_state_changed)

520

390

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

521

391

522

392

523

393

class AvahiServiceToSyslog(AvahiService):

524

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

394

def rename(self):

525

395

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

526

ret = super(AvahiServiceToSyslog, self).rename(*args,

527

**kwargs)

528

syslogger.setFormatter(logging.Formatter(

529

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

530

.format(self.name)))

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

531

401

return ret

532

402

533

403

534

# Pretend that we have a GnuTLS module

535

class gnutls:

536

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

537

538

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

539

if library is None:

540

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

541

_library = ctypes.cdll.LoadLibrary(library)

542

del library

543

544

# Unless otherwise indicated, the constants and types below are

545

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

546

547

# Constants

548

E_SUCCESS = 0

549

E_INTERRUPTED = -52

550

E_AGAIN = -28

551

CRT_OPENPGP = 2

552

CRT_RAWPK = 3

553

CLIENT = 2

554

SHUT_RDWR = 0

555

CRD_CERTIFICATE = 1

556

E_NO_CERTIFICATE_FOUND = -49

557

X509_FMT_DER = 0

558

NO_TICKETS = 1<<10

559

ENABLE_RAWPK = 1<<18

560

CTYPE_PEERS = 3

561

KEYID_USE_SHA256 = 1 # gnutls/x509.h

562

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

563

564

# Types

565

class _session_int(ctypes.Structure):

566

_fields_ = []

567

session_t = ctypes.POINTER(_session_int)

568

569

class certificate_credentials_st(ctypes.Structure):

570

_fields_ = []

571

certificate_credentials_t = ctypes.POINTER(

572

certificate_credentials_st)

573

certificate_type_t = ctypes.c_int

574

575

class datum_t(ctypes.Structure):

576

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

577

("size", ctypes.c_uint)]

578

579

class _openpgp_crt_int(ctypes.Structure):

580

_fields_ = []

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

582

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

583

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

584

credentials_type_t = ctypes.c_int

585

transport_ptr_t = ctypes.c_void_p

586

close_request_t = ctypes.c_int

587

588

# Exceptions

589

class Error(Exception):

590

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

591

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

592

# code is passed, convert it to a string with

593

# gnutls.strerror()

594

self.code = code

595

if message is None and code is not None:

596

message = gnutls.strerror(code).decode(

597

"utf-8", errors="replace")

598

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

599

message, *args)

600

601

class CertificateSecurityError(Error):

602

pass

603

604

class PointerTo:

605

def __init__(self, cls):

606

self.cls = cls

607

608

def from_param(self, obj):

609

if not isinstance(obj, self.cls):

610

raise TypeError("Not of type {}: {!r}"

611

.format(self.cls.__name__, obj))

612

return ctypes.byref(obj.from_param(obj))

613

614

class CastToVoidPointer:

615

def __init__(self, cls):

616

self.cls = cls

617

618

def from_param(self, obj):

619

if not isinstance(obj, self.cls):

620

raise TypeError("Not of type {}: {!r}"

621

.format(self.cls.__name__, obj))

622

return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)

623

624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

629

# Classes

630

class Credentials(With_from_param):

631

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

634

self.type = gnutls.CRD_CERTIFICATE

635

636

def __del__(self):

637

gnutls.certificate_free_credentials(self)

638

639

class ClientSession(With_from_param):

640

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

641

self._as_parameter_ = gnutls.session_t()

642

gnutls_flags = gnutls.CLIENT

643

if gnutls.check_version(b"3.5.6"):

644

gnutls_flags |= gnutls.NO_TICKETS

645

if gnutls.has_rawpk:

646

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

648

del gnutls_flags

649

gnutls.set_default_priority(self)

650

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

651

gnutls.handshake_set_private_extensions(self, True)

652

self.socket = socket

653

if credentials is None:

654

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

657

self.credentials = credentials

658

659

def __del__(self):

660

gnutls.deinit(self)

661

662

def handshake(self):

663

return gnutls.handshake(self)

664

665

def send(self, data):

666

data = bytes(data)

667

data_len = len(data)

668

while data_len > 0:

669

data_len -= gnutls.record_send(self, data[-data_len:],

670

data_len)

671

672

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

674

675

# Error handling functions

676

def _error_code(result):

677

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

678

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

679

if result >= gnutls.E_SUCCESS:

680

return result

681

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

raise gnutls.CertificateSecurityError(code=result)

683

raise gnutls.Error(code=result)

684

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

687

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

688

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

689

while result < gnutls.E_SUCCESS:

690

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

691

return _error_code(result)

692

result = func(*arguments)

693

return result

694

695

# Unless otherwise indicated, the function declarations below are

696

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

697

698

# Functions

699

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

701

ctypes.POINTER(ctypes.c_char_p)]

702

priority_set_direct.restype = _error_code

703

704

init = _library.gnutls_init

705

init.argtypes = [PointerTo(ClientSession), ctypes.c_int]

706

init.restype = _error_code

707

708

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

710

set_default_priority.restype = _error_code

711

712

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

714

ctypes.c_size_t]

715

record_send.restype = ctypes.c_ssize_t

716

record_send.errcheck = _retry_on_error

717

718

certificate_allocate_credentials = (

719

_library.gnutls_certificate_allocate_credentials)

720

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

722

certificate_allocate_credentials.restype = _error_code

723

724

certificate_free_credentials = (

725

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

727

certificate_free_credentials.restype = None

728

729

handshake_set_private_extensions = (

730

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

732

ctypes.c_int]

733

handshake_set_private_extensions.restype = None

734

735

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

738

credentials_set.restype = _error_code

739

740

strerror = _library.gnutls_strerror

741

strerror.argtypes = [ctypes.c_int]

742

strerror.restype = ctypes.c_char_p

743

744

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

746

certificate_type_get.restype = _error_code

747

748

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

750

ctypes.POINTER(ctypes.c_uint)]

751

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

753

global_set_log_level = _library.gnutls_global_set_log_level

754

global_set_log_level.argtypes = [ctypes.c_int]

755

global_set_log_level.restype = None

756

757

global_set_log_function = _library.gnutls_global_set_log_function

758

global_set_log_function.argtypes = [log_func]

759

global_set_log_function.restype = None

760

761

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

763

deinit.restype = None

764

765

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

768

handshake.errcheck = _retry_on_error

769

770

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

772

transport_set_ptr.restype = None

773

774

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

777

bye.errcheck = _retry_on_error

778

779

check_version = _library.gnutls_check_version

780

check_version.argtypes = [ctypes.c_char_p]

781

check_version.restype = ctypes.c_char_p

782

783

_need_version = b"3.3.0"

784

if check_version(_need_version) is None:

785

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

786

.format(_need_version))

787

788

_tls_rawpk_version = b"3.6.6"

789

has_rawpk = bool(check_version(_tls_rawpk_version))

790

791

if has_rawpk:

792

# Types

793

class pubkey_st(ctypes.Structure):

794

_fields = []

795

pubkey_t = ctypes.POINTER(pubkey_st)

796

797

x509_crt_fmt_t = ctypes.c_int

798

799

# All the function declarations below are from

800

# gnutls/abstract.h

801

pubkey_init = _library.gnutls_pubkey_init

802

pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]

803

pubkey_init.restype = _error_code

804

805

pubkey_import = _library.gnutls_pubkey_import

806

pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),

807

x509_crt_fmt_t]

808

pubkey_import.restype = _error_code

809

810

pubkey_get_key_id = _library.gnutls_pubkey_get_key_id

811

pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,

812

ctypes.POINTER(ctypes.c_ubyte),

813

ctypes.POINTER(ctypes.c_size_t)]

814

pubkey_get_key_id.restype = _error_code

815

816

pubkey_deinit = _library.gnutls_pubkey_deinit

817

pubkey_deinit.argtypes = [pubkey_t]

818

pubkey_deinit.restype = None

819

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

822

823

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

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

825

openpgp_crt_init.restype = _error_code

826

827

openpgp_crt_import = _library.gnutls_openpgp_crt_import

828

openpgp_crt_import.argtypes = [openpgp_crt_t,

829

ctypes.POINTER(datum_t),

830

openpgp_crt_fmt_t]

831

openpgp_crt_import.restype = _error_code

832

833

openpgp_crt_verify_self = \

834

_library.gnutls_openpgp_crt_verify_self

835

openpgp_crt_verify_self.argtypes = [

836

openpgp_crt_t,

837

ctypes.c_uint,

838

ctypes.POINTER(ctypes.c_uint),

839

]

840

openpgp_crt_verify_self.restype = _error_code

841

842

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

843

openpgp_crt_deinit.argtypes = [openpgp_crt_t]

844

openpgp_crt_deinit.restype = None

845

846

openpgp_crt_get_fingerprint = (

847

_library.gnutls_openpgp_crt_get_fingerprint)

848

openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,

849

ctypes.c_void_p,

850

ctypes.POINTER(

851

ctypes.c_size_t)]

852

openpgp_crt_get_fingerprint.restype = _error_code

853

854

if check_version(b"3.6.4"):

855

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

857

certificate_type_get2.restype = _error_code

858

859

# Remove non-public functions

860

del _error_code, _retry_on_error

861

862

863

def call_pipe(connection, # : multiprocessing.Connection

864

func, *args, **kwargs):

865

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

866

867

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

868

return value on the provided multiprocessing.Connection.

869

"""

870

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

871

connection.close()

872

873

874

class Client:

404

class Client(object):

875

405

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

876

406

877

407

Attributes:

878

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

408

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

879

409

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

880

410

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

881

checker: multiprocessing.Process(); a running checker process used

882

to see if the client lives. None if no process is

883

running.

884

checker_callback_tag: a GLib event source tag, or None

411

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

412

to see if the client lives.

413

'None' if no process is running.

414

checker_callback_tag: a gobject event source tag, or None

885

415

checker_command: string; External command which is run to check

886

416

if client lives. %() expansions are done at

887

417

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

888

418

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

889

checker_initiator_tag: a GLib event source tag, or None

419

checker_initiator_tag: a gobject event source tag, or None

890

420

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

891

421

client_structure: Object describing what attributes a client has

892

422

and is used for storing the client at exit

893

423

current_checker_command: string; current running checker_command

894

disable_initiator_tag: a GLib event source tag, or None

424

disable_initiator_tag: a gobject event source tag, or None

895

425

enabled: bool()

896

426

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

897

uniquely identify an OpenPGP client

898

key_id: string (64 hexadecimal digits); used to uniquely identify

899

a client using raw public keys

427

uniquely identify the client

900

428

host: string; available for use by the checker command

901

429

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

902

430

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

904

432

last_checker_status: integer between 0 and 255 reflecting exit

905

433

status of last checker. -1 reflects crashed

906

434

checker, -2 means no checker completed yet.

907

last_checker_signal: The signal which killed the last checker, if

908

last_checker_status is -1

909

435

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

910

436

911

437

D-Bus identifiers

918

444

disabled, or None

919

445

server_settings: The server_settings dict from main()

920

446

"""

921

447

922

448

runtime_expansions = ("approval_delay", "approval_duration",

923

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

449

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

924

450

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

925

451

"last_approval_request", "last_checked_ok",

926

452

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

927

client_defaults = {

928

"timeout": "PT5M",

929

"extended_timeout": "PT15M",

930

"interval": "PT2M",

931

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

932

"host": "",

933

"approval_delay": "PT0S",

934

"approval_duration": "PT1S",

935

"approved_by_default": "True",

936

"enabled": "True",

937

}

938

453

client_defaults = { "timeout": "PT5M",

454

"extended_timeout": "PT15M",

455

"interval": "PT2M",

456

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

457

"host": "",

458

"approval_delay": "PT0S",

459

"approval_duration": "PT1S",

460

"approved_by_default": "True",

461

"enabled": "True",

462

}

463

939

464

@staticmethod

940

465

def config_parser(config):

941

466

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

948

473

for client_name in config.sections():

949

474

section = dict(config.items(client_name))

950

475

client = settings[client_name] = {}

951

476

952

477

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

953

478

# Reformat values from string types to Python types

954

479

client["approved_by_default"] = config.getboolean(

955

480

client_name, "approved_by_default")

956

481

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

957

482

"enabled")

958

959

# Uppercase and remove spaces from key_id and fingerprint

960

# for later comparison purposes with return value from the

961

# key_id() and fingerprint() functions

962

client["key_id"] = (section.get("key_id", "").upper()

963

.replace(" ", ""))

483

964

484

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

965

485

.replace(" ", ""))

966

486

if "secret" in section:

967

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

968

.encode("utf-8"),

969

"base64")

487

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

970

488

elif "secfile" in section:

971

489

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

972

490

(section["secfile"])),

987

505

client["last_approval_request"] = None

988

506

client["last_checked_ok"] = None

989

507

client["last_checker_status"] = -2

990

508

991

509

return settings

992

993

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

510

511

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

994

512

self.name = name

995

513

if server_settings is None:

996

514

server_settings = {}

998

516

# adding all client settings

999

517

for setting, value in settings.items():

1000

518

setattr(self, setting, value)

1001

519

1002

520

if self.enabled:

1003

521

if not hasattr(self, "last_enabled"):

1004

522

self.last_enabled = datetime.datetime.utcnow()

1008

526

else:

1009

527

self.last_enabled = None

1010

528

self.expires = None

1011

1012

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

1013

log.debug(" Key ID: %s", self.key_id)

1014

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

529

530

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

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the fingerprint()

533

# function

534

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

1015

535

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

1016

536

datetime.datetime.utcnow())

1017

537

1018

538

# attributes specific for this server instance

1019

539

self.checker = None

1020

540

self.checker_initiator_tag = None

1023

543

self.current_checker_command = None

1024

544

self.approved = None

1025

545

self.approvals_pending = 0

1026

self.changedstate = multiprocessing_manager.Condition(

1027

multiprocessing_manager.Lock())

1028

self.client_structure = [attr

1029

for attr in self.__dict__.keys()

546

self.changedstate = (multiprocessing_manager

547

.Condition(multiprocessing_manager

548

.Lock()))

549

self.client_structure = [attr for attr in

550

self.__dict__.iterkeys()

1030

551

if not attr.startswith("_")]

1031

552

self.client_structure.append("client_structure")

1032

1033

for name, t in inspect.getmembers(

1034

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

553

554

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

555

lambda obj:

556

isinstance(obj,

557

property)):

1035

558

if not name.startswith("_"):

1036

559

self.client_structure.append(name)

1037

560

1038

561

# Send notice to process children that client state has changed

1039

562

def send_changedstate(self):

1040

563

with self.changedstate:

1041

564

self.changedstate.notify_all()

1042

565

1043

566

def enable(self):

1044

567

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

1045

568

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

1046

569

# Already enabled

1047

570

return

571

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

1048

572

self.enabled = True

1049

573

self.last_enabled = datetime.datetime.utcnow()

1050

574

self.init_checker()

1051

575

self.send_changedstate()

1052

576

1053

577

def disable(self, quiet=True):

1054

578

"""Disable this client."""

1055

579

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

1056

580

return False

1057

581

if not quiet:

1058

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

582

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

1059

583

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

1060

GLib.source_remove(self.disable_initiator_tag)

584

gobject.source_remove(self.disable_initiator_tag)

1061

585

self.disable_initiator_tag = None

1062

586

self.expires = None

1063

587

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

1064

GLib.source_remove(self.checker_initiator_tag)

588

gobject.source_remove(self.checker_initiator_tag)

1065

589

self.checker_initiator_tag = None

1066

590

self.stop_checker()

1067

591

self.enabled = False

1068

592

if not quiet:

1069

593

self.send_changedstate()

1070

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

594

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

1071

595

return False

1072

596

1073

597

def __del__(self):

1074

598

self.disable()

1075

1076

def init_checker(self, randomize_start=False):

1077

# Schedule a new checker to be started a randomly selected

1078

# time (a fraction of 'interval') from now. This spreads out

1079

# the startup of checkers over time when the server is

1080

# started.

599

600

def init_checker(self):

601

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

602

# and every interval from then on.

1081

603

if self.checker_initiator_tag is not None:

1082

GLib.source_remove(self.checker_initiator_tag)

1083

interval_milliseconds = int(self.interval.total_seconds()

1084

* 1000)

1085

if randomize_start:

1086

delay_milliseconds = random.randrange(

1087

interval_milliseconds + 1)

1088

else:

1089

delay_milliseconds = interval_milliseconds

1090

self.checker_initiator_tag = GLib.timeout_add(

1091

delay_milliseconds, self.start_checker, randomize_start)

1092

delay = datetime.timedelta(0, 0, 0, delay_milliseconds)

1093

# A checker might take up to an 'interval' of time, so we can

1094

# expire at the soonest one interval after a checker was

1095

# started. Since the initial checker is delayed, the expire

1096

# time might have to be extended.

1097

now = datetime.datetime.utcnow()

1098

self.expires = now + delay + self.interval

1099

# Schedule a disable() at expire time

604

gobject.source_remove(self.checker_initiator_tag)

605

self.checker_initiator_tag = (gobject.timeout_add

606

(int(self.interval

607

.total_seconds() * 1000),

608

self.start_checker))

609

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

1100

610

if self.disable_initiator_tag is not None:

1101

GLib.source_remove(self.disable_initiator_tag)

1102

self.disable_initiator_tag = GLib.timeout_add(

1103

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

1104

self.disable)

1105

1106

def checker_callback(self, source, condition, connection,

1107

command):

611

gobject.source_remove(self.disable_initiator_tag)

612

self.disable_initiator_tag = (gobject.timeout_add

613

(int(self.timeout

614

.total_seconds() * 1000),

615

self.disable))

616

# Also start a new checker *right now*.

617

self.start_checker()

618

619

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

1108

620

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

1109

# Read return code from connection (see call_pipe)

1110

returncode = connection.recv()

1111

connection.close()

1112

if self.checker is not None:

1113

self.checker.join()

1114

621

self.checker_callback_tag = None

1115

622

self.checker = None

1116

1117

if returncode >= 0:

1118

self.last_checker_status = returncode

1119

self.last_checker_signal = None

623

if os.WIFEXITED(condition):

624

self.last_checker_status = os.WEXITSTATUS(condition)

1120

625

if self.last_checker_status == 0:

1121

log.info("Checker for %(name)s succeeded", vars(self))

626

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

627

vars(self))

1122

628

self.checked_ok()

1123

629

else:

1124

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

630

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

631

vars(self))

1125

632

else:

1126

633

self.last_checker_status = -1

1127

self.last_checker_signal = -returncode

1128

log.warning("Checker for %(name)s crashed?", vars(self))

1129

return False

1130

634

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

635

vars(self))

636

1131

637

def checked_ok(self):

1132

638

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

1133

639

self.last_checked_ok = datetime.datetime.utcnow()

1134

640

self.last_checker_status = 0

1135

self.last_checker_signal = None

1136

641

self.bump_timeout()

1137

642

1138

643

def bump_timeout(self, timeout=None):

1139

644

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

1140

645

if timeout is None:

1141

646

timeout = self.timeout

1142

647

if self.disable_initiator_tag is not None:

1143

GLib.source_remove(self.disable_initiator_tag)

648

gobject.source_remove(self.disable_initiator_tag)

1144

649

self.disable_initiator_tag = None

1145

650

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

1146

self.disable_initiator_tag = GLib.timeout_add(

1147

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

651

self.disable_initiator_tag = (gobject.timeout_add

652

(int(timeout.total_seconds()

653

* 1000), self.disable))

1148

654

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

1149

655

1150

656

def need_approval(self):

1151

657

self.last_approval_request = datetime.datetime.utcnow()

1152

1153

def start_checker(self, start_was_randomized=False):

658

659

def start_checker(self):

1154

660

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

1155

661

1156

662

If a checker already exists, leave it running and do

1157

663

nothing."""

1158

664

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

1163

669

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

1164

670

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

1165

671

# should be.

1166

1167

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

1168

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

1169

self.checker.join()

1170

self.checker = None

672

673

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

674

try:

675

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

676

except AttributeError:

677

pass

678

except OSError as error:

679

if error.errno != errno.ECHILD:

680

raise

681

else:

682

if pid:

683

logger.warning("Checker was a zombie")

684

gobject.source_remove(self.checker_callback_tag)

685

self.checker_callback(pid, status,

686

self.current_checker_command)

1171

687

# Start a new checker if needed

1172

688

if self.checker is None:

1173

689

# Escape attributes for the shell

1174

escaped_attrs = {

1175

attr: shlex.quote(str(getattr(self, attr)))

1176

for attr in self.runtime_expansions}

690

escaped_attrs = { attr:

691

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

692

for attr in self.runtime_expansions }

1177

693

try:

1178

694

command = self.checker_command % escaped_attrs

1179

695

except TypeError as error:

1180

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

1181

self.checker_command, exc_info=error)

1182

return True # Try again later

696

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

697

self.checker_command, exc_info=error)

698

return True # Try again later

1183

699

self.current_checker_command = command

1184

log.info("Starting checker %r for %s", command, self.name)

1185

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

1186

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

1187

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

1188

# always replaced by /dev/null.)

1189

# The exception is when not debugging but nevertheless

1190

# running in the foreground; use the previously

1191

# created wnull.

1192

popen_args = {"close_fds": True,

1193

"shell": True,

1194

"cwd": "/"}

1195

if (not self.server_settings["debug"]

1196

and self.server_settings["foreground"]):

1197

popen_args.update({"stdout": wnull,

1198

"stderr": wnull})

1199

pipe = multiprocessing.Pipe(duplex=False)

1200

self.checker = multiprocessing.Process(

1201

target=call_pipe,

1202

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

1203

kwargs=popen_args)

1204

self.checker.start()

1205

self.checker_callback_tag = GLib.io_add_watch(

1206

GLib.IOChannel.unix_new(pipe[0].fileno()),

1207

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1208

self.checker_callback, pipe[0], command)

1209

if start_was_randomized:

1210

# We were started after a random delay; Schedule a new

1211

# checker to be started an 'interval' from now, and every

1212

# interval from then on.

1213

now = datetime.datetime.utcnow()

1214

self.checker_initiator_tag = GLib.timeout_add(

1215

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

1216

self.start_checker)

1217

self.expires = max(self.expires, now + self.interval)

1218

# Don't start a new checker again after same random delay

1219

return False

1220

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

700

try:

701

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

702

command, self.name)

703

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

704

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

705

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

706

# always replaced by /dev/null.)

707

# The exception is when not debugging but nevertheless

708

# running in the foreground; use the previously

709

# created wnull.

710

popen_args = {}

711

if (not self.server_settings["debug"]

712

and self.server_settings["foreground"]):

713

popen_args.update({"stdout": wnull,

714

"stderr": wnull })

715

self.checker = subprocess.Popen(command,

716

close_fds=True,

717

shell=True, cwd="/",

718

**popen_args)

719

except OSError as error:

720

logger.error("Failed to start subprocess",

721

exc_info=error)

722

return True

723

self.checker_callback_tag = (gobject.child_watch_add

724

(self.checker.pid,

725

self.checker_callback,

726

data=command))

727

# The checker may have completed before the gobject

728

# watch was added. Check for this.

729

try:

730

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

731

except OSError as error:

732

if error.errno == errno.ECHILD:

733

# This should never happen

734

logger.error("Child process vanished",

735

exc_info=error)

736

return True

737

raise

738

if pid:

739

gobject.source_remove(self.checker_callback_tag)

740

self.checker_callback(pid, status, command)

741

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

1221

742

return True

1222

743

1223

744

def stop_checker(self):

1224

745

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

1225

746

if self.checker_callback_tag:

1226

GLib.source_remove(self.checker_callback_tag)

747

gobject.source_remove(self.checker_callback_tag)

1227

748

self.checker_callback_tag = None

1228

749

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

1229

750

return

1230

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

1231

self.checker.terminate()

751

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

752

try:

753

self.checker.terminate()

754

#time.sleep(0.5)

755

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

756

# self.checker.kill()

757

except OSError as error:

758

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

759

raise

1232

760

self.checker = None

1233

761

1234

762

1235

def dbus_service_property(dbus_interface,

1236

signature="v",

1237

access="readwrite",

1238

byte_arrays=False):

763

def dbus_service_property(dbus_interface, signature="v",

764

access="readwrite", byte_arrays=False):

1239

765

"""Decorators for marking methods of a DBusObjectWithProperties to

1240

766

become properties on the D-Bus.

1241

767

1242

768

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

1243

769

and with one argument by "Set".

1244

770

1245

771

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

1246

772

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

1247

773

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

1251

777

if byte_arrays and signature != "ay":

1252

778

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

1253

779

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

1254

1255

780

def decorator(func):

1256

781

func._dbus_is_property = True

1257

782

func._dbus_interface = dbus_interface

1260

785

func._dbus_name = func.__name__

1261

786

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

1262

787

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

1263

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

788

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

1264

789

return func

1265

1266

790

return decorator

1267

791

1268

792

1269

793

def dbus_interface_annotations(dbus_interface):

1270

794

"""Decorator for marking functions returning interface annotations

1271

795

1272

796

Usage:

1273

797

1274

798

@dbus_interface_annotations("org.example.Interface")

1275

799

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

1276

800

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

1277

801

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

1278

802

"false"}

1279

803

"""

1280

1281

804

def decorator(func):

1282

805

func._dbus_is_interface = True

1283

806

func._dbus_interface = dbus_interface

1284

807

func._dbus_name = dbus_interface

1285

808

return func

1286

1287

809

return decorator

1288

810

1289

811

1290

812

def dbus_annotations(annotations):

1291

813

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

1292

814

Usage:

1293

815

1294

816

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

1295

817

"org.freedesktop.DBus.Property."

1296

818

"EmitsChangedSignal": "false"})

1298

820

access="r")

1299

821

def Property_dbus_property(self):

1300

822

return dbus.Boolean(False)

1301

1302

See also the DBusObjectWithAnnotations class.

1303

823

"""

1304

1305

824

def decorator(func):

1306

825

func._dbus_annotations = annotations

1307

826

return func

1308

1309

827

return decorator

1310

828

1311

829

1314

832

"""

1315

833

pass

1316

834

1317

1318

835

class DBusPropertyAccessException(DBusPropertyException):

1319

836

"""A property's access permissions disallows an operation.

1320

837

"""

1327

844

pass

1328

845

1329

846

1330

class DBusObjectWithAnnotations(dbus.service.Object):

1331

"""A D-Bus object with annotations.

1332

1333

Classes inheriting from this can use the dbus_annotations

1334

decorator to add annotations to methods or signals.

847

class DBusObjectWithProperties(dbus.service.Object):

848

"""A D-Bus object with properties.

849

850

Classes inheriting from this can use the dbus_service_property

851

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

852

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

1335

853

"""

1336

854

1337

855

@staticmethod

1338

856

def _is_dbus_thing(thing):

1339

857

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

1340

858

1341

859

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

1342

860

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

1343

861

"""

1344

862

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

1345

863

False)

1346

864

1347

865

def _get_all_dbus_things(self, thing):

1348

866

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

1349

867

"""

1350

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

868

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

869

name),

1351

870

athing.__get__(self))

1352

871

for cls in self.__class__.__mro__

1353

872

for name, athing in

1354

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

1355

1356

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1357

out_signature="s",

1358

path_keyword="object_path",

1359

connection_keyword="connection")

1360

def Introspect(self, object_path, connection):

1361

"""Overloading of standard D-Bus method.

1362

1363

Inserts annotation tags on methods and signals.

1364

"""

1365

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

1366

connection)

1367

try:

1368

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

1369

1370

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

1371

# Add annotation tags

1372

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

1373

for tag in if_tag.getElementsByTagName(typ):

1374

annots = dict()

1375

for name, prop in (self.

1376

_get_all_dbus_things(typ)):

1377

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

1378

and prop._dbus_interface

1379

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

1380

annots.update(getattr(

1381

prop, "_dbus_annotations", {}))

1382

for name, value in annots.items():

1383

ann_tag = document.createElement(

1384

"annotation")

1385

ann_tag.setAttribute("name", name)

1386

ann_tag.setAttribute("value", value)

1387

tag.appendChild(ann_tag)

1388

# Add interface annotation tags

1389

for annotation, value in dict(

1390

itertools.chain.from_iterable(

1391

annotations().items()

1392

for name, annotations

1393

in self._get_all_dbus_things("interface")

1394

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

1395

)).items():

1396

ann_tag = document.createElement("annotation")

1397

ann_tag.setAttribute("name", annotation)

1398

ann_tag.setAttribute("value", value)

1399

if_tag.appendChild(ann_tag)

1400

# Fix argument name for the Introspect method itself

1401

if (if_tag.getAttribute("name")

1402

== dbus.INTROSPECTABLE_IFACE):

1403

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

1404

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

1405

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

1406

if (arg.getAttribute("direction")

1407

== "out"):

1408

arg.setAttribute("name",

1409

"xml_data")

1410

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

1411

document.unlink()

1412

except (AttributeError, xml.dom.DOMException,

1413

xml.parsers.expat.ExpatError) as error:

1414

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

1415

exc_info=error)

1416

return xmlstring

1417

1418

1419

class DBusObjectWithProperties(DBusObjectWithAnnotations):

1420

"""A D-Bus object with properties.

1421

1422

Classes inheriting from this can use the dbus_service_property

1423

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

1424

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

1425

"""

1426

873

inspect.getmembers(cls,

874

self._is_dbus_thing(thing)))

875

1427

876

def _get_dbus_property(self, interface_name, property_name):

1428

877

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

1429

878

property with the specified name and interface.

1430

879

"""

1431

for cls in self.__class__.__mro__:

1432

for name, value in inspect.getmembers(

1433

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

880

for cls in self.__class__.__mro__:

881

for name, value in (inspect.getmembers

882

(cls,

883

self._is_dbus_thing("property"))):

1434

884

if (value._dbus_name == property_name

1435

885

and value._dbus_interface == interface_name):

1436

886

return value.__get__(self)

1437

887

1438

888

# No such property

1439

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

1440

self.dbus_object_path, interface_name, property_name))

1441

1442

@classmethod

1443

def _get_all_interface_names(cls):

1444

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

1445

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

1446

"_dbus_interface", None)

1447

for x in (inspect.getmro(cls))

1448

for attr in dir(x))

1449

if name is not None)

1450

1451

@dbus.service.method(dbus.PROPERTIES_IFACE,

1452

in_signature="ss",

889

raise DBusPropertyNotFound(self.dbus_object_path + ":"

890

+ interface_name + "."

891

+ property_name)

892

893

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

1453

894

out_signature="v")

1454

895

def Get(self, interface_name, property_name):

1455

896

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

1461

902

if not hasattr(value, "variant_level"):

1462

903

return value

1463

904

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

1464

905

1465

906

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

1466

907

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

1467

908

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

1476

917

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

1477

918

"'ay' signature {!r}"

1478

919

.format(prop._dbus_signature))

1479

value = dbus.ByteArray(bytes(value))

920

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

921

for byte in value))

1480

922

prop(value)

1481

1482

@dbus.service.method(dbus.PROPERTIES_IFACE,

1483

in_signature="s",

923

924

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

1484

925

out_signature="a{sv}")

1485

926

def GetAll(self, interface_name):

1486

927

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

1487

928

standard.

1488

929

1489

930

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

1490

931

"""

1491

932

properties = {}

1501

942

if not hasattr(value, "variant_level"):

1502

943

properties[name] = value

1503

944

continue

1504

properties[name] = type(value)(

1505

value, variant_level=value.variant_level + 1)

945

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

946

value.variant_level+1)

1506

947

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

1507

948

1508

949

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

1509

950

def PropertiesChanged(self, interface_name, changed_properties,

1510

951

invalidated_properties):

1512

953

standard.

1513

954

"""

1514

955

pass

1515

956

1516

957

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1517

958

out_signature="s",

1518

path_keyword="object_path",

1519

connection_keyword="connection")

959

path_keyword='object_path',

960

connection_keyword='connection')

1520

961

def Introspect(self, object_path, connection):

1521

962

"""Overloading of standard D-Bus method.

1522

963

1523

964

Inserts property tags and interface annotation tags.

1524

965

"""

1525

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1526

object_path,

1527

connection)

966

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

967

connection)

1528

968

try:

1529

969

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

1530

1531

970

def make_tag(document, name, prop):

1532

971

e = document.createElement("property")

1533

972

e.setAttribute("name", name)

1534

973

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

1535

974

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

1536

975

return e

1537

1538

976

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

1539

977

# Add property tags

1540

978

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

1543

981

if prop._dbus_interface

1544

982

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

1545

983

if_tag.appendChild(tag)

1546

# Add annotation tags for properties

1547

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

1548

annots = dict()

1549

for name, prop in self._get_all_dbus_things(

1550

"property"):

1551

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

1552

and prop._dbus_interface

1553

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

1554

annots.update(getattr(

1555

prop, "_dbus_annotations", {}))

1556

for name, value in annots.items():

1557

ann_tag = document.createElement(

1558

"annotation")

1559

ann_tag.setAttribute("name", name)

1560

ann_tag.setAttribute("value", value)

1561

tag.appendChild(ann_tag)

984

# Add annotation tags

985

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

986

for tag in if_tag.getElementsByTagName(typ):

987

annots = dict()

988

for name, prop in (self.

989

_get_all_dbus_things(typ)):

990

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

991

and prop._dbus_interface

992

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

993

annots.update(getattr

994

(prop,

995

"_dbus_annotations",

996

{}))

997

for name, value in annots.items():

998

ann_tag = document.createElement(

999

"annotation")

1000

ann_tag.setAttribute("name", name)

1001

ann_tag.setAttribute("value", value)

1002

tag.appendChild(ann_tag)

1003

# Add interface annotation tags

1004

for annotation, value in dict(

1005

itertools.chain.from_iterable(

1006

annotations().items()

1007

for name, annotations in

1008

self._get_all_dbus_things("interface")

1009

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

1010

)).items():

1011

ann_tag = document.createElement("annotation")

1012

ann_tag.setAttribute("name", annotation)

1013

ann_tag.setAttribute("value", value)

1014

if_tag.appendChild(ann_tag)

1562

1015

# Add the names to the return values for the

1563

1016

# "org.freedesktop.DBus.Properties" methods

1564

1017

if (if_tag.getAttribute("name")

1578

1031

document.unlink()

1579

1032

except (AttributeError, xml.dom.DOMException,

1580

1033

xml.parsers.expat.ExpatError) as error:

1581

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

1582

exc_info=error)

1583

return xmlstring

1584

1585

1586

try:

1587

dbus.OBJECT_MANAGER_IFACE

1588

except AttributeError:

1589

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

1590

1591

1592

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1593

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

1594

1595

Classes inheriting from this exposes the standard

1596

GetManagedObjects call and the InterfacesAdded and

1597

InterfacesRemoved signals on the standard

1598

"org.freedesktop.DBus.ObjectManager" interface.

1599

1600

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

1601

manually.

1602

"""

1603

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1604

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

1605

def GetManagedObjects(self):

1606

"""This function must be overridden"""

1607

raise NotImplementedError()

1608

1609

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1610

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

1611

def InterfacesAdded(self, object_path, interfaces_and_properties):

1612

pass

1613

1614

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

1615

def InterfacesRemoved(self, object_path, interfaces):

1616

pass

1617

1618

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1619

out_signature="s",

1620

path_keyword="object_path",

1621

connection_keyword="connection")

1622

def Introspect(self, object_path, connection):

1623

"""Overloading of standard D-Bus method.

1624

1625

Override return argument name of GetManagedObjects to be

1626

"objpath_interfaces_and_properties"

1627

"""

1628

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1629

object_path,

1630

connection)

1631

try:

1632

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

1633

1634

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

1635

# Fix argument name for the GetManagedObjects method

1636

if (if_tag.getAttribute("name")

1637

== dbus.OBJECT_MANAGER_IFACE):

1638

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

1639

if (cn.getAttribute("name")

1640

== "GetManagedObjects"):

1641

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

1642

if (arg.getAttribute("direction")

1643

== "out"):

1644

arg.setAttribute(

1645

"name",

1646

"objpath_interfaces"

1647

"_and_properties")

1648

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

1649

document.unlink()

1650

except (AttributeError, xml.dom.DOMException,

1651

xml.parsers.expat.ExpatError) as error:

1652

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

1653

exc_info=error)

1034

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

1035

exc_info=error)

1654

1036

return xmlstring

1655

1037

1656

1038

1657

1039

def datetime_to_dbus(dt, variant_level=0):

1658

1040

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

1659

1041

if dt is None:

1660

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

1661

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

1042

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

1043

return dbus.String(dt.isoformat(),

1044

variant_level=variant_level)

1662

1045

1663

1046

1664

1047

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1666

1049

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

1667

1050

interface names according to the "alt_interface_names" mapping.

1668

1051

Usage:

1669

1052

1670

1053

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

1671

1054

"net.example.AlternateInterface"})

1672

1055

class SampleDBusObject(dbus.service.Object):

1673

1056

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

1674

1057

def SampleDBusMethod():

1675

1058

pass

1676

1059

1677

1060

The above "SampleDBusMethod" on "SampleDBusObject" will be

1678

1061

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

1679

1062

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

1680

1063

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

1681

1064

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

1682

1065

1683

1066

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

1684

1067

(from DBusObjectWithProperties) and interfaces (from the

1685

1068

dbus_interface_annotations decorator).

1686

1069

"""

1687

1688

1070

def wrapper(cls):

1689

1071

for orig_interface_name, alt_interface_name in (

1690

alt_interface_names.items()):

1072

alt_interface_names.items()):

1691

1073

attr = {}

1692

1074

interface_names = set()

1693

1075

# Go though all attributes of the class

1695

1077

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

1696

1078

# with the wrong interface name

1697

1079

if (not hasattr(attribute, "_dbus_interface")

1698

or not attribute._dbus_interface.startswith(

1699

orig_interface_name)):

1080

or not attribute._dbus_interface

1081

.startswith(orig_interface_name)):

1700

1082

continue

1701

1083

# Create an alternate D-Bus interface name based on

1702

1084

# the current name

1703

alt_interface = attribute._dbus_interface.replace(

1704

orig_interface_name, alt_interface_name)

1085

alt_interface = (attribute._dbus_interface

1086

.replace(orig_interface_name,

1087

alt_interface_name))

1705

1088

interface_names.add(alt_interface)

1706

1089

# Is this a D-Bus signal?

1707

1090

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

1708

1091

# Extract the original non-method undecorated

1709

1092

# function by black magic

1710

if sys.version_info.major == 2:

1711

nonmethod_func = (dict(

1093

nonmethod_func = (dict(

1712

1094

zip(attribute.func_code.co_freevars,

1713

attribute.__closure__))

1714

["func"].cell_contents)

1715

else:

1716

nonmethod_func = (dict(

1717

zip(attribute.__code__.co_freevars,

1718

attribute.__closure__))

1719

["func"].cell_contents)

1095

attribute.__closure__))["func"]

1096

.cell_contents)

1720

1097

# Create a new, but exactly alike, function

1721

1098

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

1722

1099

# with the alternate D-Bus interface name

1723

new_function = copy_function(nonmethod_func)

1724

new_function = (dbus.service.signal(

1725

alt_interface,

1726

attribute._dbus_signature)(new_function))

1100

new_function = (dbus.service.signal

1101

(alt_interface,

1102

attribute._dbus_signature)

1103

(types.FunctionType(

1104

nonmethod_func.func_code,

1105

nonmethod_func.func_globals,

1106

nonmethod_func.func_name,

1107

nonmethod_func.func_defaults,

1108

nonmethod_func.func_closure)))

1727

1109

# Copy annotations, if any

1728

1110

try:

1729

new_function._dbus_annotations = dict(

1730

attribute._dbus_annotations)

1111

new_function._dbus_annotations = (

1112

dict(attribute._dbus_annotations))

1731

1113

except AttributeError:

1732

1114

pass

1733

1734

1115

# Define a creator of a function to call both the

1735

1116

# original and alternate functions, so both the

1736

1117

# original and alternate signals gets sent when

1739

1120

"""This function is a scope container to pass

1740

1121

func1 and func2 to the "call_both" function

1741

1122

outside of its arguments"""

1742

1743

@functools.wraps(func2)

1744

1123

def call_both(*args, **kwargs):

1745

1124

"""This function will emit two D-Bus

1746

1125

signals by calling func1 and func2"""

1747

1126

func1(*args, **kwargs)

1748

1127

func2(*args, **kwargs)

1749

# Make wrapper function look like a D-Bus

1750

# signal

1751

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

1752

if name.startswith("_dbus_"):

1753

setattr(call_both, name, attr)

1754

1755

1128

return call_both

1756

1129

# Create the "call_both" function and add it to

1757

1130

# the class

1762

1135

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

1763

1136

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

1764

1137

# to the class.

1765

attr[attrname] = (

1766

dbus.service.method(

1767

alt_interface,

1768

attribute._dbus_in_signature,

1769

attribute._dbus_out_signature)

1770

(copy_function(attribute)))

1138

attr[attrname] = (dbus.service.method

1139

(alt_interface,

1140

attribute._dbus_in_signature,

1141

attribute._dbus_out_signature)

1142

(types.FunctionType

1143

(attribute.func_code,

1144

attribute.func_globals,

1145

attribute.func_name,

1146

attribute.func_defaults,

1147

attribute.func_closure)))

1771

1148

# Copy annotations, if any

1772

1149

try:

1773

attr[attrname]._dbus_annotations = dict(

1774

attribute._dbus_annotations)

1150

attr[attrname]._dbus_annotations = (

1151

dict(attribute._dbus_annotations))

1775

1152

except AttributeError:

1776

1153

pass

1777

1154

# Is this a D-Bus property?

1780

1157

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

1781

1158

# property with the alternate D-Bus interface

1782

1159

# name. Add it to the class.

1783

attr[attrname] = (dbus_service_property(

1784

alt_interface, attribute._dbus_signature,

1785

attribute._dbus_access,

1786

attribute._dbus_get_args_options

1787

["byte_arrays"])

1788

(copy_function(attribute)))

1160

attr[attrname] = (dbus_service_property

1161

(alt_interface,

1162

attribute._dbus_signature,

1163

attribute._dbus_access,

1164

attribute

1165

._dbus_get_args_options

1166

["byte_arrays"])

1167

(types.FunctionType

1168

(attribute.func_code,

1169

attribute.func_globals,

1170

attribute.func_name,

1171

attribute.func_defaults,

1172

attribute.func_closure)))

1789

1173

# Copy annotations, if any

1790

1174

try:

1791

attr[attrname]._dbus_annotations = dict(

1792

attribute._dbus_annotations)

1175

attr[attrname]._dbus_annotations = (

1176

dict(attribute._dbus_annotations))

1793

1177

except AttributeError:

1794

1178

pass

1795

1179

# Is this a D-Bus interface?

1798

1182

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

1799

1183

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

1800

1184

# to the class.

1801

attr[attrname] = (

1802

dbus_interface_annotations(alt_interface)

1803

(copy_function(attribute)))

1185

attr[attrname] = (dbus_interface_annotations

1186

(alt_interface)

1187

(types.FunctionType

1188

(attribute.func_code,

1189

attribute.func_globals,

1190

attribute.func_name,

1191

attribute.func_defaults,

1192

attribute.func_closure)))

1804

1193

if deprecate:

1805

1194

# Deprecate all alternate interfaces

1806

iname = "_AlternateDBusNames_interface_annotation{}"

1195

iname="_AlternateDBusNames_interface_annotation{}"

1807

1196

for interface_name in interface_names:

1808

1809

1197

@dbus_interface_annotations(interface_name)

1810

1198

def func(self):

1811

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

1812

"true"}

1199

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

1200

"true" }

1813

1201

# Find an unused name

1814

1202

for aname in (iname.format(i)

1815

1203

for i in itertools.count()):

1819

1207

if interface_names:

1820

1208

# Replace the class with a new subclass of it with

1821

1209

# methods, signals, etc. as created above.

1822

if sys.version_info.major == 2:

1823

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

1824

(cls, ), attr)

1825

else:

1826

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

1827

(cls, ), attr)

1210

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

1211

(cls,), attr)

1828

1212

return cls

1829

1830

1213

return wrapper

1831

1214

1832

1215

1833

1216

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

1834

"se.bsnet.fukt.Mandos"})

1217

"se.bsnet.fukt.Mandos"})

1835

1218

class ClientDBus(Client, DBusObjectWithProperties):

1836

1219

"""A Client class using D-Bus

1837

1220

1838

1221

Attributes:

1839

1222

dbus_object_path: dbus.ObjectPath

1840

1223

bus: dbus.SystemBus()

1841

1224

"""

1842

1225

1843

1226

runtime_expansions = (Client.runtime_expansions

1844

+ ("dbus_object_path", ))

1845

1227

+ ("dbus_object_path",))

1228

1846

1229

_interface = "se.recompile.Mandos.Client"

1847

1230

1848

1231

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

1849

1850

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

1232

1233

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

1851

1234

self.bus = bus

1852

1235

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

1853

1236

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

1855

1238

client_object_name = str(self.name).translate(

1856

1239

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

1857

1240

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

1858

self.dbus_object_path = dbus.ObjectPath(

1859

"/clients/" + client_object_name)

1241

self.dbus_object_path = (dbus.ObjectPath

1242

("/clients/" + client_object_name))

1860

1243

DBusObjectWithProperties.__init__(self, self.bus,

1861

1244

self.dbus_object_path)

1862

1863

def notifychangeproperty(transform_func, dbus_name,

1864

type_func=lambda x: x,

1865

variant_level=1,

1866

invalidate_only=False,

1245

1246

def notifychangeproperty(transform_func,

1247

dbus_name, type_func=lambda x: x,

1248

variant_level=1, invalidate_only=False,

1867

1249

_interface=_interface):

1868

1250

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

1869

1251

its changes to DBus.

1870

1252

1871

1253

transform_fun: Function that takes a value and a variant_level

1872

1254

and transforms it to a D-Bus type.

1873

1255

dbus_name: D-Bus name of the variable

1876

1258

variant_level: D-Bus variant level. Default: 1

1877

1259

"""

1878

1260

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

1879

1880

1261

def setter(self, value):

1881

1262

if hasattr(self, "dbus_object_path"):

1882

1263

if (not hasattr(self, attrname) or

1883

1264

type_func(getattr(self, attrname, None))

1884

1265

!= type_func(value)):

1885

1266

if invalidate_only:

1886

self.PropertiesChanged(

1887

_interface, dbus.Dictionary(),

1888

dbus.Array((dbus_name, )))

1267

self.PropertiesChanged(_interface,

1268

dbus.Dictionary(),

1269

dbus.Array

1270

((dbus_name,)))

1889

1271

else:

1890

dbus_value = transform_func(

1891

type_func(value),

1892

variant_level=variant_level)

1272

dbus_value = transform_func(type_func(value),

1273

variant_level

1274

=variant_level)

1893

1275

self.PropertyChanged(dbus.String(dbus_name),

1894

1276

dbus_value)

1895

self.PropertiesChanged(

1896

_interface,

1897

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

1898

dbus_value}),

1899

dbus.Array())

1277

self.PropertiesChanged(_interface,

1278

dbus.Dictionary({

1279

dbus.String(dbus_name):

1280

dbus_value }), dbus.Array())

1900

1281

setattr(self, attrname, value)

1901

1282

1902

1283

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

1903

1284

1904

1285

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1905

1286

approvals_pending = notifychangeproperty(dbus.Boolean,

1906

1287

"ApprovalPending",

1907

type_func=bool)

1288

type_func = bool)

1908

1289

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

1909

1290

last_enabled = notifychangeproperty(datetime_to_dbus,

1910

1291

"LastEnabled")

1911

checker = notifychangeproperty(

1912

dbus.Boolean, "CheckerRunning",

1913

type_func=lambda checker: checker is not None)

1292

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

1293

type_func = lambda checker:

1294

checker is not None)

1914

1295

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1915

1296

"LastCheckedOK")

1916

1297

last_checker_status = notifychangeproperty(dbus.Int16,

1919

1300

datetime_to_dbus, "LastApprovalRequest")

1920

1301

approved_by_default = notifychangeproperty(dbus.Boolean,

1921

1302

"ApprovedByDefault")

1922

approval_delay = notifychangeproperty(

1923

dbus.UInt64, "ApprovalDelay",

1924

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

1303

approval_delay = notifychangeproperty(dbus.UInt64,

1304

"ApprovalDelay",

1305

type_func =

1306

lambda td: td.total_seconds()

1307

* 1000)

1925

1308

approval_duration = notifychangeproperty(

1926

1309

dbus.UInt64, "ApprovalDuration",

1927

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

1310

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

1928

1311

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

1929

timeout = notifychangeproperty(

1930

dbus.UInt64, "Timeout",

1931

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

1312

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

1313

type_func = lambda td:

1314

td.total_seconds() * 1000)

1932

1315

extended_timeout = notifychangeproperty(

1933

1316

dbus.UInt64, "ExtendedTimeout",

1934

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

1935

interval = notifychangeproperty(

1936

dbus.UInt64, "Interval",

1937

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

1317

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

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

lambda td: td.total_seconds()

1322

* 1000)

1938

1323

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

1939

1324

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

1940

1325

invalidate_only=True)

1941

1326

1942

1327

del notifychangeproperty

1943

1328

1944

1329

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

1945

1330

try:

1946

1331

self.remove_from_connection()

1949

1334

if hasattr(DBusObjectWithProperties, "__del__"):

1950

1335

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

1951

1336

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

1952

1953

def checker_callback(self, source, condition,

1954

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

1955

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

1956

connection, command, *args,

1957

**kwargs)

1958

exitstatus = self.last_checker_status

1959

if exitstatus >= 0:

1337

1338

def checker_callback(self, pid, condition, command,

1339

*args, **kwargs):

1340

self.checker_callback_tag = None

1341

self.checker = None

1342

if os.WIFEXITED(condition):

1343

exitstatus = os.WEXITSTATUS(condition)

1960

1344

# Emit D-Bus signal

1961

1345

self.CheckerCompleted(dbus.Int16(exitstatus),

1962

# This is specific to GNU libC

1963

dbus.Int64(exitstatus << 8),

1346

dbus.Int64(condition),

1964

1347

dbus.String(command))

1965

1348

else:

1966

1349

# Emit D-Bus signal

1967

1350

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

1968

dbus.Int64(

1969

# This is specific to GNU libC

1970

(exitstatus << 8)

1971

| self.last_checker_signal),

1351

dbus.Int64(condition),

1972

1352

dbus.String(command))

1973

return ret

1974

1353

1354

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

1355

*args, **kwargs)

1356

1975

1357

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

1976

1358

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

1977

1359

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

1981

1363

# Emit D-Bus signal

1982

1364

self.CheckerStarted(self.current_checker_command)

1983

1365

return r

1984

1366

1985

1367

def _reset_approved(self):

1986

1368

self.approved = None

1987

1369

return False

1988

1370

1989

1371

def approve(self, value=True):

1990

1372

self.approved = value

1991

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

1992

* 1000), self._reset_approved)

1373

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

1374

* 1000), self._reset_approved)

1993

1375

self.send_changedstate()

1994

1995

# D-Bus methods, signals & properties

1996

1997

# Interfaces

1998

1999

# Signals

2000

1376

1377

## D-Bus methods, signals & properties

1378

1379

## Interfaces

1380

1381

## Signals

1382

2001

1383

# CheckerCompleted - signal

2002

1384

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

2003

1385

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

2004

1386

"D-Bus signal"

2005

1387

pass

2006

1388

2007

1389

# CheckerStarted - signal

2008

1390

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

2009

1391

def CheckerStarted(self, command):

2010

1392

"D-Bus signal"

2011

1393

pass

2012

1394

2013

1395

# PropertyChanged - signal

2014

1396

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

2015

1397

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

2016

1398

def PropertyChanged(self, property, value):

2017

1399

"D-Bus signal"

2018

1400

pass

2019

1401

2020

1402

# GotSecret - signal

2021

1403

@dbus.service.signal(_interface)

2022

1404

def GotSecret(self):

2025

1407

server to mandos-client

2026

1408

"""

2027

1409

pass

2028

1410

2029

1411

# Rejected - signal

2030

1412

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

2031

1413

def Rejected(self, reason):

2032

1414

"D-Bus signal"

2033

1415

pass

2034

1416

2035

1417

# NeedApproval - signal

2036

1418

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

2037

1419

def NeedApproval(self, timeout, default):

2038

1420

"D-Bus signal"

2039

1421

return self.need_approval()

2040

2041

# Methods

2042

1422

1423

## Methods

1424

2043

1425

# Approve - method

2044

1426

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

2045

1427

def Approve(self, value):

2046

1428

self.approve(value)

2047

1429

2048

1430

# CheckedOK - method

2049

1431

@dbus.service.method(_interface)

2050

1432

def CheckedOK(self):

2051

1433

self.checked_ok()

2052

1434

2053

1435

# Enable - method

2054

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

2055

1436

@dbus.service.method(_interface)

2056

1437

def Enable(self):

2057

1438

"D-Bus method"

2058

1439

self.enable()

2059

1440

2060

1441

# StartChecker - method

2061

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

2062

1442

@dbus.service.method(_interface)

2063

1443

def StartChecker(self):

2064

1444

"D-Bus method"

2065

1445

self.start_checker()

2066

1446

2067

1447

# Disable - method

2068

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

2069

1448

@dbus.service.method(_interface)

2070

1449

def Disable(self):

2071

1450

"D-Bus method"

2072

1451

self.disable()

2073

1452

2074

1453

# StopChecker - method

2075

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

2076

1454

@dbus.service.method(_interface)

2077

1455

def StopChecker(self):

2078

1456

self.stop_checker()

2079

2080

# Properties

2081

1457

1458

## Properties

1459

2082

1460

# ApprovalPending - property

2083

1461

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

2084

1462

def ApprovalPending_dbus_property(self):

2085

1463

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

2086

1464

2087

1465

# ApprovedByDefault - property

2088

@dbus_service_property(_interface,

2089

signature="b",

1466

@dbus_service_property(_interface, signature="b",

2090

1467

access="readwrite")

2091

1468

def ApprovedByDefault_dbus_property(self, value=None):

2092

1469

if value is None: # get

2093

1470

return dbus.Boolean(self.approved_by_default)

2094

1471

self.approved_by_default = bool(value)

2095

1472

2096

1473

# ApprovalDelay - property

2097

@dbus_service_property(_interface,

2098

signature="t",

1474

@dbus_service_property(_interface, signature="t",

2099

1475

access="readwrite")

2100

1476

def ApprovalDelay_dbus_property(self, value=None):

2101

1477

if value is None: # get

2102

1478

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

2103

1479

* 1000)

2104

1480

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

2105

1481

2106

1482

# ApprovalDuration - property

2107

@dbus_service_property(_interface,

2108

signature="t",

1483

@dbus_service_property(_interface, signature="t",

2109

1484

access="readwrite")

2110

1485

def ApprovalDuration_dbus_property(self, value=None):

2111

1486

if value is None: # get

2112

1487

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

2113

1488

* 1000)

2114

1489

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

2115

1490

2116

1491

# Name - property

2117

@dbus_annotations(

2118

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

2119

1492

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

2120

1493

def Name_dbus_property(self):

2121

1494

return dbus.String(self.name)

2122

2123

# KeyID - property

2124

@dbus_annotations(

2125

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

2126

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

2127

def KeyID_dbus_property(self):

2128

return dbus.String(self.key_id)

2129

1495

2130

1496

# Fingerprint - property

2131

@dbus_annotations(

2132

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

2133

1497

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

2134

1498

def Fingerprint_dbus_property(self):

2135

1499

return dbus.String(self.fingerprint)

2136

1500

2137

1501

# Host - property

2138

@dbus_service_property(_interface,

2139

signature="s",

1502

@dbus_service_property(_interface, signature="s",

2140

1503

access="readwrite")

2141

1504

def Host_dbus_property(self, value=None):

2142

1505

if value is None: # get

2143

1506

return dbus.String(self.host)

2144

1507

self.host = str(value)

2145

1508

2146

1509

# Created - property

2147

@dbus_annotations(

2148

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

2149

1510

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

2150

1511

def Created_dbus_property(self):

2151

1512

return datetime_to_dbus(self.created)

2152

1513

2153

1514

# LastEnabled - property

2154

1515

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

2155

1516

def LastEnabled_dbus_property(self):

2156

1517

return datetime_to_dbus(self.last_enabled)

2157

1518

2158

1519

# Enabled - property

2159

@dbus_service_property(_interface,

2160

signature="b",

1520

@dbus_service_property(_interface, signature="b",

2161

1521

access="readwrite")

2162

1522

def Enabled_dbus_property(self, value=None):

2163

1523

if value is None: # get

2166

1526

self.enable()

2167

1527

else:

2168

1528

self.disable()

2169

1529

2170

1530

# LastCheckedOK - property

2171

@dbus_service_property(_interface,

2172

signature="s",

1531

@dbus_service_property(_interface, signature="s",

2173

1532

access="readwrite")

2174

1533

def LastCheckedOK_dbus_property(self, value=None):

2175

1534

if value is not None:

2176

1535

self.checked_ok()

2177

1536

return

2178

1537

return datetime_to_dbus(self.last_checked_ok)

2179

1538

2180

1539

# LastCheckerStatus - property

2181

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

1540

@dbus_service_property(_interface, signature="n",

1541

access="read")

2182

1542

def LastCheckerStatus_dbus_property(self):

2183

1543

return dbus.Int16(self.last_checker_status)

2184

1544

2185

1545

# Expires - property

2186

1546

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

2187

1547

def Expires_dbus_property(self):

2188

1548

return datetime_to_dbus(self.expires)

2189

1549

2190

1550

# LastApprovalRequest - property

2191

1551

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

2192

1552

def LastApprovalRequest_dbus_property(self):

2193

1553

return datetime_to_dbus(self.last_approval_request)

2194

1554

2195

1555

# Timeout - property

2196

@dbus_service_property(_interface,

2197

signature="t",

1556

@dbus_service_property(_interface, signature="t",

2198

1557

access="readwrite")

2199

1558

def Timeout_dbus_property(self, value=None):

2200

1559

if value is None: # get

2212

1571

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

2213

1572

is None):

2214

1573

return

2215

GLib.source_remove(self.disable_initiator_tag)

2216

self.disable_initiator_tag = GLib.timeout_add(

2217

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

2218

self.disable)

2219

1574

gobject.source_remove(self.disable_initiator_tag)

1575

self.disable_initiator_tag = (

1576

gobject.timeout_add(

1577

int((self.expires - now).total_seconds()

1578

* 1000), self.disable))

1579

2220

1580

# ExtendedTimeout - property

2221

@dbus_service_property(_interface,

2222

signature="t",

1581

@dbus_service_property(_interface, signature="t",

2223

1582

access="readwrite")

2224

1583

def ExtendedTimeout_dbus_property(self, value=None):

2225

1584

if value is None: # get

2226

1585

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

2227

1586

* 1000)

2228

1587

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

2229

1588

2230

1589

# Interval - property

2231

@dbus_service_property(_interface,

2232

signature="t",

1590

@dbus_service_property(_interface, signature="t",

2233

1591

access="readwrite")

2234

1592

def Interval_dbus_property(self, value=None):

2235

1593

if value is None: # get

2239

1597

return

2240

1598

if self.enabled:

2241

1599

# Reschedule checker run

2242

GLib.source_remove(self.checker_initiator_tag)

2243

self.checker_initiator_tag = GLib.timeout_add(

2244

value, self.start_checker)

2245

self.start_checker() # Start one now, too

2246

1600

gobject.source_remove(self.checker_initiator_tag)

1601

self.checker_initiator_tag = (gobject.timeout_add

1602

(value, self.start_checker))

1603

self.start_checker() # Start one now, too

1604

2247

1605

# Checker - property

2248

@dbus_service_property(_interface,

2249

signature="s",

1606

@dbus_service_property(_interface, signature="s",

2250

1607

access="readwrite")

2251

1608

def Checker_dbus_property(self, value=None):

2252

1609

if value is None: # get

2253

1610

return dbus.String(self.checker_command)

2254

1611

self.checker_command = str(value)

2255

1612

2256

1613

# CheckerRunning - property

2257

@dbus_service_property(_interface,

2258

signature="b",

1614

@dbus_service_property(_interface, signature="b",

2259

1615

access="readwrite")

2260

1616

def CheckerRunning_dbus_property(self, value=None):

2261

1617

if value is None: # get

2264

1620

self.start_checker()

2265

1621

else:

2266

1622

self.stop_checker()

2267

1623

2268

1624

# ObjectPath - property

2269

@dbus_annotations(

2270

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

2271

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

2272

1625

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

2273

1626

def ObjectPath_dbus_property(self):

2274

return self.dbus_object_path # is already a dbus.ObjectPath

2275

1627

return self.dbus_object_path # is already a dbus.ObjectPath

1628

2276

1629

# Secret = property

2277

@dbus_annotations(

2278

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

2279

"invalidates"})

2280

@dbus_service_property(_interface,

2281

signature="ay",

2282

access="write",

2283

byte_arrays=True)

1630

@dbus_service_property(_interface, signature="ay",

1631

access="write", byte_arrays=True)

2284

1632

def Secret_dbus_property(self, value):

2285

1633

self.secret = bytes(value)

2286

1634

2287

1635

del _interface

2288

1636

2289

1637

2290

class ProxyClient:

2291

def __init__(self, child_pipe, key_id, fpr, address):

1638

class ProxyClient(object):

1639

def __init__(self, child_pipe, fpr, address):

2292

1640

self._pipe = child_pipe

2293

self._pipe.send(("init", key_id, fpr, address))

1641

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

2294

1642

if not self._pipe.recv():

2295

raise KeyError(key_id or fpr)

2296

1643

raise KeyError()

1644

2297

1645

def __getattribute__(self, name):

2298

if name == "_pipe":

1646

if name == '_pipe':

2299

1647

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

2300

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

1648

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

2301

1649

data = self._pipe.recv()

2302

if data[0] == "data":

1650

if data[0] == 'data':

2303

1651

return data[1]

2304

if data[0] == "function":

2305

1652

if data[0] == 'function':

2306

1653

def func(*args, **kwargs):

2307

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

1654

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

2308

1655

return self._pipe.recv()[1]

2309

2310

1656

return func

2311

1657

2312

1658

def __setattr__(self, name, value):

2313

if name == "_pipe":

1659

if name == '_pipe':

2314

1660

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

2315

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

1661

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

2316

1662

2317

1663

2318

1664

class ClientHandler(socketserver.BaseRequestHandler, object):

2319

1665

"""A class to handle client connections.

2320

1666

2321

1667

Instantiated once for each connection to handle it.

2322

1668

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

2323

1669

2324

1670

def handle(self):

2325

1671

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

2326

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

2327

str(self.client_address))

2328

log.debug("Pipe FD: %d", self.server.child_pipe.fileno())

2329

2330

session = gnutls.ClientSession(self.request)

2331

2332

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

2333

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

2334

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

2335

# "+DHE-DSS"))

1672

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

1673

str(self.client_address))

1674

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

1675

self.server.child_pipe.fileno())

1676

1677

session = (gnutls.connection

1678

.ClientSession(self.request,

1679

gnutls.connection

1680

.X509Credentials()))

1681

1682

# Note: gnutls.connection.X509Credentials is really a

1683

# generic GnuTLS certificate credentials object so long as

1684

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

1685

# here despite using OpenPGP certificates.

1686

1687

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

1688

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

1689

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

1690

# "+DHE-DSS"))

2336

1691

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

2337

1692

priority = self.server.gnutls_priority

2338

1693

if priority is None:

2339

1694

priority = "NORMAL"

2340

gnutls.priority_set_direct(session,

2341

priority.encode("utf-8"), None)

2342

1695

(gnutls.library.functions

1696

.gnutls_priority_set_direct(session._c_object,

1697

priority, None))

1698

2343

1699

# Start communication using the Mandos protocol

2344

1700

# Get protocol number

2345

1701

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

2346

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

1702

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

2347

1703

try:

2348

1704

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

2349

1705

raise RuntimeError(line)

2350

1706

except (ValueError, IndexError, RuntimeError) as error:

2351

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

1707

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

2352

1708

return

2353

1709

2354

1710

# Start GnuTLS connection

2355

1711

try:

2356

1712

session.handshake()

2357

except gnutls.Error as error:

2358

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

1713

except gnutls.errors.GNUTLSError as error:

1714

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

2359

1715

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

2360

1716

# established. Just abandon the request.

2361

1717

return

2362

log.debug("Handshake succeeded")

2363

1718

logger.debug("Handshake succeeded")

1719

2364

1720

approval_required = False

2365

1721

try:

2366

if gnutls.has_rawpk:

2367

fpr = b""

2368

try:

2369

key_id = self.key_id(

2370

self.peer_certificate(session))

2371

except (TypeError, gnutls.Error) as error:

2372

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

2373

return

2374

log.debug("Key ID: %s",

2375

key_id.decode("utf-8",

2376

errors="replace"))

2377

2378

else:

2379

key_id = b""

2380

try:

2381

fpr = self.fingerprint(

2382

self.peer_certificate(session))

2383

except (TypeError, gnutls.Error) as error:

2384

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

2385

return

2386

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

2387

2388

try:

2389

client = ProxyClient(child_pipe, key_id, fpr,

1722

try:

1723

fpr = self.fingerprint(self.peer_certificate

1724

(session))

1725

except (TypeError,

1726

gnutls.errors.GNUTLSError) as error:

1727

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

1728

return

1729

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

1730

1731

try:

1732

client = ProxyClient(child_pipe, fpr,

2390

1733

self.client_address)

2391

1734

except KeyError:

2392

1735

return

2393

1736

2394

1737

if client.approval_delay:

2395

1738

delay = client.approval_delay

2396

1739

client.approvals_pending += 1

2397

1740

approval_required = True

2398

1741

2399

1742

while True:

2400

1743

if not client.enabled:

2401

log.info("Client %s is disabled", client.name)

1744

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

1745

client.name)

2402

1746

if self.server.use_dbus:

2403

1747

# Emit D-Bus signal

2404

1748

client.Rejected("Disabled")

2405

1749

return

2406

1750

2407

1751

if client.approved or not client.approval_delay:

2408

# We are approved or approval is disabled

1752

#We are approved or approval is disabled

2409

1753

break

2410

1754

elif client.approved is None:

2411

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

2412

client.name)

1755

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

1756

client.name)

2413

1757

if self.server.use_dbus:

2414

1758

# Emit D-Bus signal

2415

1759

client.NeedApproval(

2416

1760

client.approval_delay.total_seconds()

2417

1761

* 1000, client.approved_by_default)

2418

1762

else:

2419

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

2420

client.name)

1763

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

1764

client.name)

2421

1765

if self.server.use_dbus:

2422

1766

# Emit D-Bus signal

2423

1767

client.Rejected("Denied")

2424

1768

return

2425

2426

# wait until timeout or approved

1769

1770

#wait until timeout or approved

2427

1771

time = datetime.datetime.now()

2428

1772

client.changedstate.acquire()

2429

1773

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

2431

1775

time2 = datetime.datetime.now()

2432

1776

if (time2 - time) >= delay:

2433

1777

if not client.approved_by_default:

2434

log.warning("Client %s timed out while"

2435

" waiting for approval",

2436

client.name)

1778

logger.warning("Client %s timed out while"

1779

" waiting for approval",

1780

client.name)

2437

1781

if self.server.use_dbus:

2438

1782

# Emit D-Bus signal

2439

1783

client.Rejected("Approval timed out")

2442

1786

break

2443

1787

else:

2444

1788

delay -= time2 - time

2445

2446

try:

2447

session.send(client.secret)

2448

except gnutls.Error as error:

2449

log.warning("gnutls send failed", exc_info=error)

2450

return

2451

2452

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

1789

1790

sent_size = 0

1791

while sent_size < len(client.secret):

1792

try:

1793

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

1794

except gnutls.errors.GNUTLSError as error:

1795

logger.warning("gnutls send failed",

1796

exc_info=error)

1797

return

1798

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

1799

sent, len(client.secret)

1800

- (sent_size + sent))

1801

sent_size += sent

1802

1803

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

2453

1804

# bump the timeout using extended_timeout

2454

1805

client.bump_timeout(client.extended_timeout)

2455

1806

if self.server.use_dbus:

2456

1807

# Emit D-Bus signal

2457

1808

client.GotSecret()

2458

1809

2459

1810

finally:

2460

1811

if approval_required:

2461

1812

client.approvals_pending -= 1

2462

1813

try:

2463

1814

session.bye()

2464

except gnutls.Error as error:

2465

log.warning("GnuTLS bye failed", exc_info=error)

2466

1815

except gnutls.errors.GNUTLSError as error:

1816

logger.warning("GnuTLS bye failed",

1817

exc_info=error)

1818

2467

1819

@staticmethod

2468

1820

def peer_certificate(session):

2469

"Return the peer's certificate as a bytestring"

2470

try:

2471

cert_type = gnutls.certificate_type_get2(

2472

session, gnutls.CTYPE_PEERS)

2473

except AttributeError:

2474

cert_type = gnutls.certificate_type_get(session)

2475

if gnutls.has_rawpk:

2476

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2477

else:

2478

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2479

# If not a valid certificate type...

2480

if cert_type not in valid_cert_types:

2481

log.info("Cert type %r not in %r", cert_type,

2482

valid_cert_types)

2483

# ...return invalid data

2484

return b""

1821

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

1822

# If not an OpenPGP certificate...

1823

if (gnutls.library.functions

1824

.gnutls_certificate_type_get(session._c_object)

1825

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1826

# ...do the normal thing

1827

return session.peer_certificate

2485

1828

list_size = ctypes.c_uint(1)

2486

cert_list = (gnutls.certificate_get_peers

2487

(session, ctypes.byref(list_size)))

1829

cert_list = (gnutls.library.functions

1830

.gnutls_certificate_get_peers

1831

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

2488

1832

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

2489

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

1833

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

1834

" certificate")

2490

1835

if list_size.value == 0:

2491

1836

return None

2492

1837

cert = cert_list[0]

2493

1838

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

2494

2495

@staticmethod

2496

def key_id(certificate):

2497

"Convert a certificate bytestring to a hexdigit key ID"

2498

# New GnuTLS "datum" with the public key

2499

datum = gnutls.datum_t(

2500

ctypes.cast(ctypes.c_char_p(certificate),

2501

ctypes.POINTER(ctypes.c_ubyte)),

2502

ctypes.c_uint(len(certificate)))

2503

# XXX all these need to be created in the gnutls "module"

2504

# New empty GnuTLS certificate

2505

pubkey = gnutls.pubkey_t()

2506

gnutls.pubkey_init(ctypes.byref(pubkey))

2507

# Import the raw public key into the certificate

2508

gnutls.pubkey_import(pubkey,

2509

ctypes.byref(datum),

2510

gnutls.X509_FMT_DER)

2511

# New buffer for the key ID

2512

buf = ctypes.create_string_buffer(32)

2513

buf_len = ctypes.c_size_t(len(buf))

2514

# Get the key ID from the raw public key into the buffer

2515

gnutls.pubkey_get_key_id(

2516

pubkey,

2517

gnutls.KEYID_USE_SHA256,

2518

ctypes.cast(ctypes.byref(buf),

2519

ctypes.POINTER(ctypes.c_ubyte)),

2520

ctypes.byref(buf_len))

2521

# Deinit the certificate

2522

gnutls.pubkey_deinit(pubkey)

2523

2524

# Convert the buffer to a Python bytestring

2525

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

2526

# Convert the bytestring to hexadecimal notation

2527

hex_key_id = binascii.hexlify(key_id).upper()

2528

return hex_key_id

2529

1839

2530

1840

@staticmethod

2531

1841

def fingerprint(openpgp):

2532

1842

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

2533

1843

# New GnuTLS "datum" with the OpenPGP public key

2534

datum = gnutls.datum_t(

2535

ctypes.cast(ctypes.c_char_p(openpgp),

2536

ctypes.POINTER(ctypes.c_ubyte)),

2537

ctypes.c_uint(len(openpgp)))

1844

datum = (gnutls.library.types

1845

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

1846

ctypes.POINTER

1847

(ctypes.c_ubyte)),

1848

ctypes.c_uint(len(openpgp))))

2538

1849

# New empty GnuTLS certificate

2539

crt = gnutls.openpgp_crt_t()

2540

gnutls.openpgp_crt_init(ctypes.byref(crt))

1850

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1851

(gnutls.library.functions

1852

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2541

1853

# Import the OpenPGP public key into the certificate

2542

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

2543

gnutls.OPENPGP_FMT_RAW)

1854

(gnutls.library.functions

1855

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

1856

gnutls.library.constants

1857

.GNUTLS_OPENPGP_FMT_RAW))

2544

1858

# Verify the self signature in the key

2545

1859

crtverify = ctypes.c_uint()

2546

gnutls.openpgp_crt_verify_self(crt, 0,

2547

ctypes.byref(crtverify))

1860

(gnutls.library.functions

1861

.gnutls_openpgp_crt_verify_self(crt, 0,

1862

ctypes.byref(crtverify)))

2548

1863

if crtverify.value != 0:

2549

gnutls.openpgp_crt_deinit(crt)

2550

raise gnutls.CertificateSecurityError(code

2551

=crtverify.value)

1864

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1865

raise (gnutls.errors.CertificateSecurityError

1866

("Verify failed"))

2552

1867

# New buffer for the fingerprint

2553

1868

buf = ctypes.create_string_buffer(20)

2554

1869

buf_len = ctypes.c_size_t()

2555

1870

# Get the fingerprint from the certificate into the buffer

2556

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

2557

ctypes.byref(buf_len))

1871

(gnutls.library.functions

1872

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

1873

ctypes.byref(buf_len)))

2558

1874

# Deinit the certificate

2559

gnutls.openpgp_crt_deinit(crt)

1875

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

2560

1876

# Convert the buffer to a Python bytestring

2561

1877

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

2562

1878

# Convert the bytestring to hexadecimal notation

2564

1880

return hex_fpr

2565

1881

2566

1882

2567

class MultiprocessingMixIn:

1883

class MultiprocessingMixIn(object):

2568

1884

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

2569

2570

1885

def sub_process_main(self, request, address):

2571

1886

try:

2572

1887

self.finish_request(request, address)

2573

1888

except Exception:

2574

1889

self.handle_error(request, address)

2575

1890

self.close_request(request)

2576

1891

2577

1892

def process_request(self, request, address):

2578

1893

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

2579

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

2580

args=(request, address))

1894

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

1895

args = (request, address))

2581

1896

proc.start()

2582

1897

return proc

2583

1898

2584

1899

2585

class MultiprocessingMixInWithPipe(MultiprocessingMixIn):

1900

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

2586

1901

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

2587

2588

1902

def process_request(self, request, client_address):

2589

1903

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

2590

1904

2591

1905

This function creates a new pipe in self.pipe

2592

1906

"""

2593

1907

parent_pipe, self.child_pipe = multiprocessing.Pipe()

2594

1908

2595

1909

proc = MultiprocessingMixIn.process_request(self, request,

2596

1910

client_address)

2597

1911

self.child_pipe.close()

2598

1912

self.add_pipe(parent_pipe, proc)

2599

1913

2600

1914

def add_pipe(self, parent_pipe, proc):

2601

1915

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

2602

1916

raise NotImplementedError()

2603

1917

2604

1918

2605

1919

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2606

socketserver.TCPServer):

2607

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

2608

1920

socketserver.TCPServer, object):

1921

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

1922

2609

1923

Attributes:

2610

1924

enabled: Boolean; whether this server is activated yet

2611

1925

interface: None or a network interface name (string)

2612

1926

use_ipv6: Boolean; to use IPv6 or not

2613

1927

"""

2614

2615

1928

def __init__(self, server_address, RequestHandlerClass,

2616

interface=None,

2617

use_ipv6=True,

2618

socketfd=None):

1929

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

2619

1930

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

2620

1931

creating a new one with socket.socket().

2621

1932

"""

2627

1938

self.socketfd = socketfd

2628

1939

# Save the original socket.socket() function

2629

1940

self.socket_socket = socket.socket

2630

2631

1941

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

2632

#

1942

#

2633

1943

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

2634

1944

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

2635

1945

# patching socket.socket.)

2636

#

1946

#

2637

1947

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

2638

1948

@functools.wraps(socket.socket)

2639

1949

def socket_wrapper(*args, **kwargs):

2651

1961

# socket_wrapper(), if socketfd was set.

2652

1962

socketserver.TCPServer.__init__(self, server_address,

2653

1963

RequestHandlerClass)

2654

1964

2655

1965

def server_bind(self):

2656

1966

"""This overrides the normal server_bind() function

2657

1967

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

2658

1968

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

2659

global SO_BINDTODEVICE

2660

1969

if self.interface is not None:

2661

1970

if SO_BINDTODEVICE is None:

2662

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

2663

# common enough.

2664

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

2665

SO_BINDTODEVICE = 25

2666

try:

2667

self.socket.setsockopt(

2668

socket.SOL_SOCKET, SO_BINDTODEVICE,

2669

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

2670

except socket.error as error:

2671

if error.errno == errno.EPERM:

2672

log.error("No permission to bind to interface %s",

2673

self.interface)

2674

elif error.errno == errno.ENOPROTOOPT:

2675

log.error("SO_BINDTODEVICE not available; cannot"

2676

" bind to interface %s", self.interface)

2677

elif error.errno == errno.ENODEV:

2678

log.error("Interface %s does not exist, cannot"

2679

" bind", self.interface)

2680

else:

2681

raise

1971

logger.error("SO_BINDTODEVICE does not exist;"

1972

" cannot bind to interface %s",

1973

self.interface)

1974

else:

1975

try:

1976

self.socket.setsockopt(socket.SOL_SOCKET,

1977

SO_BINDTODEVICE,

1978

(self.interface + "\0")

1979

.encode("utf-8"))

1980

except socket.error as error:

1981

if error.errno == errno.EPERM:

1982

logger.error("No permission to bind to"

1983

" interface %s", self.interface)

1984

elif error.errno == errno.ENOPROTOOPT:

1985

logger.error("SO_BINDTODEVICE not available;"

1986

" cannot bind to interface %s",

1987

self.interface)

1988

elif error.errno == errno.ENODEV:

1989

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

1990

" cannot bind", self.interface)

1991

else:

1992

raise

2682

1993

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

2683

1994

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

2684

if self.server_address[1]:

2685

self.allow_reuse_address = True

2686

1995

if not self.server_address[0]:

2687

1996

if self.address_family == socket.AF_INET6:

2688

any_address = "::" # in6addr_any

1997

any_address = "::" # in6addr_any

2689

1998

else:

2690

any_address = "0.0.0.0" # INADDR_ANY

1999

any_address = "0.0.0.0" # INADDR_ANY

2691

2000

self.server_address = (any_address,

2692

2001

self.server_address[1])

2693

2002

elif not self.server_address[1]:

2694

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

2003

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

2004

0)

2695

2005

# if self.interface:

2696

2006

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

2697

2007

# 0, # port

2703

2013

2704

2014

class MandosServer(IPv6_TCPServer):

2705

2015

"""Mandos server.

2706

2016

2707

2017

Attributes:

2708

2018

clients: set of Client objects

2709

2019

gnutls_priority GnuTLS priority string

2710

2020

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

2711

2712

Assumes a GLib.MainLoop event loop.

2021

2022

Assumes a gobject.MainLoop event loop.

2713

2023

"""

2714

2715

2024

def __init__(self, server_address, RequestHandlerClass,

2716

interface=None,

2717

use_ipv6=True,

2718

clients=None,

2719

gnutls_priority=None,

2720

use_dbus=True,

2721

socketfd=None):

2025

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

2026

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

2722

2027

self.enabled = False

2723

2028

self.clients = clients

2724

2029

if self.clients is None:

2727

2032

self.gnutls_priority = gnutls_priority

2728

2033

IPv6_TCPServer.__init__(self, server_address,

2729

2034

RequestHandlerClass,

2730

interface=interface,

2731

use_ipv6=use_ipv6,

2732

socketfd=socketfd)

2733

2035

interface = interface,

2036

use_ipv6 = use_ipv6,

2037

socketfd = socketfd)

2734

2038

def server_activate(self):

2735

2039

if self.enabled:

2736

2040

return socketserver.TCPServer.server_activate(self)

2737

2041

2738

2042

def enable(self):

2739

2043

self.enabled = True

2740

2044

2741

2045

def add_pipe(self, parent_pipe, proc):

2742

2046

# Call "handle_ipc" for both data and EOF events

2743

GLib.io_add_watch(

2744

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2745

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2746

functools.partial(self.handle_ipc,

2747

parent_pipe=parent_pipe,

2748

proc=proc))

2749

2750

def handle_ipc(self, source, condition,

2751

parent_pipe=None,

2752

proc=None,

2753

client_object=None):

2047

gobject.io_add_watch(parent_pipe.fileno(),

2048

gobject.IO_IN | gobject.IO_HUP,

2049

functools.partial(self.handle_ipc,

2050

parent_pipe =

2051

parent_pipe,

2052

proc = proc))

2053

2054

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

2055

proc = None, client_object=None):

2754

2056

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

2755

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

2057

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

2756

2058

# Wait for other process to exit

2757

2059

proc.join()

2758

2060

return False

2759

2061

2760

2062

# Read a request from the child

2761

2063

request = parent_pipe.recv()

2762

2064

command = request[0]

2763

2764

if command == "init":

2765

key_id = request[1].decode("ascii")

2766

fpr = request[2].decode("ascii")

2767

address = request[3]

2768

2769

for c in self.clients.values():

2770

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2771

"27AE41E4649B934CA495991B7852B855"):

2772

continue

2773

if key_id and c.key_id == key_id:

2774

client = c

2775

break

2776

if fpr and c.fingerprint == fpr:

2065

2066

if command == 'init':

2067

fpr = request[1]

2068

address = request[2]

2069

2070

for c in self.clients.itervalues():

2071

if c.fingerprint == fpr:

2777

2072

client = c

2778

2073

break

2779

2074

else:

2780

log.info("Client not found for key ID: %s, address:"

2781

" %s", key_id or fpr, address)

2075

logger.info("Client not found for fingerprint: %s, ad"

2076

"dress: %s", fpr, address)

2782

2077

if self.use_dbus:

2783

2078

# Emit D-Bus signal

2784

mandos_dbus_service.ClientNotFound(key_id or fpr,

2079

mandos_dbus_service.ClientNotFound(fpr,

2785

2080

address[0])

2786

2081

parent_pipe.send(False)

2787

2082

return False

2788

2789

GLib.io_add_watch(

2790

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2791

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2792

functools.partial(self.handle_ipc,

2793

parent_pipe=parent_pipe,

2794

proc=proc,

2795

client_object=client))

2083

2084

gobject.io_add_watch(parent_pipe.fileno(),

2085

gobject.IO_IN | gobject.IO_HUP,

2086

functools.partial(self.handle_ipc,

2087

parent_pipe =

2088

parent_pipe,

2089

proc = proc,

2090

client_object =

2091

client))

2796

2092

parent_pipe.send(True)

2797

2093

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

2798

2094

# same fileno

2799

2095

return False

2800

if command == "funcall":

2096

if command == 'funcall':

2801

2097

funcname = request[1]

2802

2098

args = request[2]

2803

2099

kwargs = request[3]

2804

2805

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

2100

2101

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

2806

2102

funcname)(*args,

2807

**kwargs)))

2808

2809

if command == "getattr":

2103

**kwargs)))

2104

2105

if command == 'getattr':

2810

2106

attrname = request[1]

2811

if isinstance(client_object.__getattribute__(attrname),

2812

collections.abc.Callable):

2813

parent_pipe.send(("function", ))

2107

if callable(client_object.__getattribute__(attrname)):

2108

parent_pipe.send(('function',))

2814

2109

else:

2815

parent_pipe.send((

2816

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

2817

2818

if command == "setattr":

2110

parent_pipe.send(('data', client_object

2111

.__getattribute__(attrname)))

2112

2113

if command == 'setattr':

2819

2114

attrname = request[1]

2820

2115

value = request[2]

2821

2116

setattr(client_object, attrname, value)

2822

2117

2823

2118

return True

2824

2119

2825

2120

2826

2121

def rfc3339_duration_to_delta(duration):

2827

2122

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

2828

2829

>>> timedelta = datetime.timedelta

2830

>>> rfc3339_duration_to_delta("P7D") == timedelta(7)

2831

True

2832

>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)

2833

True

2834

>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)

2835

True

2836

>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)

2837

True

2838

>>> rfc3339_duration_to_delta("P1W") == timedelta(7)

2839

True

2840

>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)

2841

True

2842

>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)

2843

True

2844

>>> del timedelta

2123

2124

>>> rfc3339_duration_to_delta("P7D")

2125

datetime.timedelta(7)

2126

>>> rfc3339_duration_to_delta("PT60S")

2127

datetime.timedelta(0, 60)

2128

>>> rfc3339_duration_to_delta("PT60M")

2129

datetime.timedelta(0, 3600)

2130

>>> rfc3339_duration_to_delta("PT24H")

2131

datetime.timedelta(1)

2132

>>> rfc3339_duration_to_delta("P1W")

2133

datetime.timedelta(7)

2134

>>> rfc3339_duration_to_delta("PT5M30S")

2135

datetime.timedelta(0, 330)

2136

>>> rfc3339_duration_to_delta("P1DT3M20S")

2137

datetime.timedelta(1, 200)

2845

2138

"""

2846

2139

2847

2140

# Parsing an RFC 3339 duration with regular expressions is not

2848

2141

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

2849

2142

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

2850

2143

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

2851

2144

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

2852

2145

# avoid excessive use of external libraries.

2853

2146

2854

2147

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

2855

Token = collections.namedtuple("Token", (

2856

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

2857

# a "group" containing digits

2858

"value", # datetime.timedelta or None

2859

"followers")) # Tokens valid after this token

2148

Token = collections.namedtuple("Token",

2149

("regexp", # To match token; if

2150

# "value" is not None,

2151

# must have a "group"

2152

# containing digits

2153

"value", # datetime.timedelta or

2154

# None

2155

"followers")) # Tokens valid after

2156

# this token

2860

2157

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

2861

2158

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

2862

2159

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

2863

2160

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

2864

2161

datetime.timedelta(seconds=1),

2865

frozenset((token_end, )))

2162

frozenset((token_end,)))

2866

2163

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

2867

2164

datetime.timedelta(minutes=1),

2868

2165

frozenset((token_second, token_end)))

2884

2181

frozenset((token_month, token_end)))

2885

2182

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

2886

2183

datetime.timedelta(weeks=1),

2887

frozenset((token_end, )))

2184

frozenset((token_end,)))

2888

2185

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

2889

2186

frozenset((token_year, token_month,

2890

2187

token_day, token_time,

2891

2188

token_week)))

2892

# Define starting values:

2893

# Value so far

2894

value = datetime.timedelta()

2189

# Define starting values

2190

value = datetime.timedelta() # Value so far

2895

2191

found_token = None

2896

# Following valid tokens

2897

followers = frozenset((token_duration, ))

2898

# String left to parse

2899

s = duration

2192

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

2193

s = duration # String left to parse

2900

2194

# Loop until end token is found

2901

2195

while found_token is not token_end:

2902

2196

# Search for any currently valid tokens

2918

2212

break

2919

2213

else:

2920

2214

# No currently valid tokens were found

2921

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

2922

.format(duration))

2215

raise ValueError("Invalid RFC 3339 duration")

2923

2216

# End token found

2924

2217

return value

2925

2218

2926

2219

2927

2220

def string_to_delta(interval):

2928

2221

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

2929

2930

>>> string_to_delta("7d") == datetime.timedelta(7)

2931

True

2932

>>> string_to_delta("60s") == datetime.timedelta(0, 60)

2933

True

2934

>>> string_to_delta("60m") == datetime.timedelta(0, 3600)

2935

True

2936

>>> string_to_delta("24h") == datetime.timedelta(1)

2937

True

2938

>>> string_to_delta("1w") == datetime.timedelta(7)

2939

True

2940

>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)

2941

True

2222

2223

>>> string_to_delta('7d')

2224

datetime.timedelta(7)

2225

>>> string_to_delta('60s')

2226

datetime.timedelta(0, 60)

2227

>>> string_to_delta('60m')

2228

datetime.timedelta(0, 3600)

2229

>>> string_to_delta('24h')

2230

datetime.timedelta(1)

2231

>>> string_to_delta('1w')

2232

datetime.timedelta(7)

2233

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

2234

datetime.timedelta(0, 330)

2942

2235

"""

2943

2236

2944

2237

try:

2945

2238

return rfc3339_duration_to_delta(interval)

2946

2239

except ValueError:

2947

2240

pass

2948

2241

2949

2242

timevalue = datetime.timedelta(0)

2950

2243

for s in interval.split():

2951

2244

try:

2962

2255

elif suffix == "w":

2963

2256

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

2964

2257

else:

2965

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

2258

raise ValueError("Unknown suffix {!r}"

2259

.format(suffix))

2966

2260

except IndexError as e:

2967

2261

raise ValueError(*(e.args))

2968

2262

timevalue += delta

2969

2263

return timevalue

2970

2264

2971

2265

2972

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

2266

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

2973

2267

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

2974

2268

2975

2269

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

2976

2270

if os.fork():

2977

2271

sys.exit()

2984

2278

# Close all standard open file descriptors

2985

2279

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

2986

2280

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

2987

raise OSError(errno.ENODEV,

2988

"{} not a character device"

2281

raise OSError(errno.ENODEV, "{} not a character device"

2989

2282

.format(os.devnull))

2990

2283

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

2991

2284

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

2995

2288

2996

2289

2997

2290

def main():

2998

2291

2999

2292

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

3000

2293

# Parsing of options, both command line and config file

3001

2294

3002

2295

parser = argparse.ArgumentParser()

3003

2296

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

3004

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

2297

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

3005

2298

help="show version number and exit")

3006

2299

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

3007

2300

help="Bind to interface IF")

3043

2336

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

3044

2337

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

3045

2338

default=None)

3046

2339

3047

2340

options = parser.parse_args()

3048

2341

2342

if options.check:

2343

import doctest

2344

fail_count, test_count = doctest.testmod()

2345

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

2346

3049

2347

# Default values for config file for server-global settings

3050

if gnutls.has_rawpk:

3051

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

3052

":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")

3053

else:

3054

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

3055

":+SIGN-DSA-SHA256")

3056

server_defaults = {"interface": "",

3057

"address": "",

3058

"port": "",

3059

"debug": "False",

3060

"priority": priority,

3061

"servicename": "Mandos",

3062

"use_dbus": "True",

3063

"use_ipv6": "True",

3064

"debuglevel": "",

3065

"restore": "True",

3066

"socket": "",

3067

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

3068

"foreground": "False",

3069

"zeroconf": "True",

3070

}

3071

del priority

3072

2348

server_defaults = { "interface": "",

2349

"address": "",

2350

"port": "",

2351

"debug": "False",

2352

"priority":

2353

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

2354

"servicename": "Mandos",

2355

"use_dbus": "True",

2356

"use_ipv6": "True",

2357

"debuglevel": "",

2358

"restore": "True",

2359

"socket": "",

2360

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

2361

"foreground": "False",

2362

"zeroconf": "True",

2363

}

2364

3073

2365

# Parse config file for server-global settings

3074

server_config = configparser.ConfigParser(server_defaults)

2366

server_config = configparser.SafeConfigParser(server_defaults)

3075

2367

del server_defaults

3076

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

3077

# Convert the ConfigParser object to a dict

2368

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

2369

"mandos.conf"))

2370

# Convert the SafeConfigParser object to a dict

3078

2371

server_settings = server_config.defaults()

3079

2372

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

3080

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

3081

"foreground", "zeroconf"):

2373

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

3082

2374

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

3083

2375

option)

3084

2376

if server_settings["port"]:

3094

2386

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

3095

2387

["socket"])

3096

2388

del server_config

3097

2389

3098

2390

# Override the settings from the config file with command line

3099

2391

# options, if set.

3100

2392

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

3101

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

3102

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

3103

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

2393

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

2394

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

2395

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

3104

2396

value = getattr(options, option)

3105

2397

if value is not None:

3106

2398

server_settings[option] = value

3118

2410

if server_settings["debug"]:

3119

2411

server_settings["foreground"] = True

3120

2412

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

3121

2413

3122

2414

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

3123

3124

if (not server_settings["zeroconf"]

3125

and not (server_settings["port"]

3126

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

3127

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

3128

2415

2416

if (not server_settings["zeroconf"] and

2417

not (server_settings["port"]

2418

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

2419

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

2420

" Zeroconf")

2421

3129

2422

# For convenience

3130

2423

debug = server_settings["debug"]

3131

2424

debuglevel = server_settings["debuglevel"]

3135

2428

stored_state_file)

3136

2429

foreground = server_settings["foreground"]

3137

2430

zeroconf = server_settings["zeroconf"]

3138

2431

3139

2432

if debug:

3140

2433

initlogger(debug, logging.DEBUG)

3141

2434

else:

3144

2437

else:

3145

2438

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

3146

2439

initlogger(debug, level)

3147

2440

3148

2441

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

3149

syslogger.setFormatter(

3150

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

3151

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

3152

server_settings["servicename"])))

3153

2442

syslogger.setFormatter(logging.Formatter

2443

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

2444

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

2445

.format(server_settings

2446

["servicename"])))

2447

3154

2448

# Parse config file with clients

3155

client_config = configparser.ConfigParser(Client.client_defaults)

2449

client_config = configparser.SafeConfigParser(Client

2450

.client_defaults)

3156

2451

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

3157

2452

"clients.conf"))

3158

2453

3159

2454

global mandos_dbus_service

3160

2455

mandos_dbus_service = None

3161

2456

3162

2457

socketfd = None

3163

2458

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

3164

2459

socketfd = server_settings["socket"]

3165

tcp_server = MandosServer(

3166

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

3167

ClientHandler,

3168

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

3169

use_ipv6=use_ipv6,

3170

gnutls_priority=server_settings["priority"],

3171

use_dbus=use_dbus,

3172

socketfd=socketfd)

2460

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

2461

server_settings["port"]),

2462

ClientHandler,

2463

interface=(server_settings["interface"]

2464

or None),

2465

use_ipv6=use_ipv6,

2466

gnutls_priority=

2467

server_settings["priority"],

2468

use_dbus=use_dbus,

2469

socketfd=socketfd)

3173

2470

if not foreground:

3174

2471

pidfilename = "/run/mandos.pid"

3175

2472

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

3176

2473

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

3177

2474

pidfile = None

3178

2475

try:

3179

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

2476

pidfile = open(pidfilename, "w")

3180

2477

except IOError as e:

3181

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

3182

exc_info=e)

3183

3184

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

3185

("mandos", "mandos"),

3186

("nobody", "nogroup")):

2478

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

2479

exc_info=e)

2480

2481

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

3187

2482

try:

3188

2483

uid = pwd.getpwnam(name).pw_uid

3189

gid = pwd.getpwnam(group).pw_gid

2484

gid = pwd.getpwnam(name).pw_gid

3190

2485

break

3191

2486

except KeyError:

3192

2487

continue

3196

2491

try:

3197

2492

os.setgid(gid)

3198

2493

os.setuid(uid)

3199

log.debug("Did setuid/setgid to %s:%s", uid, gid)

3200

2494

except OSError as error:

3201

log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,

3202

os.strerror(error.errno))

3203

2495

if error.errno != errno.EPERM:

3204

2496

raise

3205

2497

3206

2498

if debug:

3207

2499

# Enable all possible GnuTLS debugging

3208

2500

3209

2501

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

3210

2502

# - GnuTLS manual

3211

gnutls.global_set_log_level(11)

3212

3213

@gnutls.log_func

2503

gnutls.library.functions.gnutls_global_set_log_level(11)

2504

2505

@gnutls.library.types.gnutls_log_func

3214

2506

def debug_gnutls(level, string):

3215

log.debug("GnuTLS: %s",

3216

string[:-1].decode("utf-8", errors="replace"))

3217

3218

gnutls.global_set_log_function(debug_gnutls)

3219

2507

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

2508

2509

(gnutls.library.functions

2510

.gnutls_global_set_log_function(debug_gnutls))

2511

3220

2512

# Redirect stdin so all checkers get /dev/null

3221

2513

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

3222

2514

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

3223

2515

if null > 2:

3224

2516

os.close(null)

3225

2517

3226

2518

# Need to fork before connecting to D-Bus

3227

2519

if not foreground:

3228

2520

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

3229

2521

daemon()

3230

3231

if gi.version_info < (3, 10, 2):

3232

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

3233

# need to inform GLib that threads will be used.

3234

GLib.threads_init()

3235

2522

2523

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

2524

# need to inform gobject that threads will be used.

2525

gobject.threads_init()

2526

3236

2527

global main_loop

3237

2528

# From the Avahi example code

3238

2529

DBusGMainLoop(set_as_default=True)

3239

main_loop = GLib.MainLoop()

2530

main_loop = gobject.MainLoop()

3240

2531

bus = dbus.SystemBus()

3241

2532

# End of Avahi example code

3242

2533

if use_dbus:

3243

2534

try:

3244

2535

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

3245

bus,

3246

do_not_queue=True)

3247

old_bus_name = dbus.service.BusName(

3248

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

3249

do_not_queue=True)

3250

except dbus.exceptions.DBusException as e:

3251

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

2536

bus, do_not_queue=True)

2537

old_bus_name = (dbus.service.BusName

2538

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

2539

do_not_queue=True))

2540

except dbus.exceptions.NameExistsException as e:

2541

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

3252

2542

use_dbus = False

3253

2543

server_settings["use_dbus"] = False

3254

2544

tcp_server.use_dbus = False

3255

2545

if zeroconf:

3256

2546

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

3257

service = AvahiServiceToSyslog(

3258

name=server_settings["servicename"],

3259

servicetype="_mandos._tcp",

3260

protocol=protocol,

3261

bus=bus)

2547

service = AvahiServiceToSyslog(name =

2548

server_settings["servicename"],

2549

servicetype = "_mandos._tcp",

2550

protocol = protocol, bus = bus)

3262

2551

if server_settings["interface"]:

3263

service.interface = if_nametoindex(

3264

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

3265

2552

service.interface = (if_nametoindex

2553

(server_settings["interface"]

2554

.encode("utf-8")))

2555

3266

2556

global multiprocessing_manager

3267

2557

multiprocessing_manager = multiprocessing.Manager()

3268

2558

3269

2559

client_class = Client

3270

2560

if use_dbus:

3271

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

3272

2561

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

2562

3273

2563

client_settings = Client.config_parser(client_config)

3274

2564

old_client_settings = {}

3275

2565

clients_data = {}

3276

2566

3277

2567

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

3278

2568

global wnull

3279

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

2569

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

3280

2570

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

3281

2571

# mode

3282

2572

if debug or not foreground:

3283

2573

wnull.close()

3284

2574

3285

2575

# Get client data and settings from last running state.

3286

2576

if server_settings["restore"]:

3287

2577

try:

3288

2578

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

3289

if sys.version_info.major == 2:

3290

clients_data, old_client_settings = pickle.load(

3291

stored_state)

3292

else:

3293

bytes_clients_data, bytes_old_client_settings = (

3294

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

3295

# Fix bytes to strings

3296

# clients_data

3297

# .keys()

3298

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

3299

if isinstance(key, bytes)

3300

else key): value

3301

for key, value in

3302

bytes_clients_data.items()}

3303

del bytes_clients_data

3304

for key in clients_data:

3305

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

3306

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

3307

for k, v in

3308

clients_data[key].items()}

3309

clients_data[key] = value

3310

# .client_structure

3311

value["client_structure"] = [

3312

(s.decode("utf-8")

3313

if isinstance(s, bytes)

3314

else s) for s in

3315

value["client_structure"]]

3316

# .name, .host, and .checker_command

3317

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

3318

if isinstance(value[k], bytes):

3319

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

3320

if "key_id" not in value:

3321

value["key_id"] = ""

3322

elif "fingerprint" not in value:

3323

value["fingerprint"] = ""

3324

# old_client_settings

3325

# .keys()

3326

old_client_settings = {

3327

(key.decode("utf-8")

3328

if isinstance(key, bytes)

3329

else key): value

3330

for key, value in

3331

bytes_old_client_settings.items()}

3332

del bytes_old_client_settings

3333

# .host and .checker_command

3334

for value in old_client_settings.values():

3335

for attribute in ("host", "checker_command"):

3336

if isinstance(value[attribute], bytes):

3337

value[attribute] = (value[attribute]

3338

.decode("utf-8"))

2579

clients_data, old_client_settings = (pickle.load

2580

(stored_state))

3339

2581

os.remove(stored_state_path)

3340

2582

except IOError as e:

3341

2583

if e.errno == errno.ENOENT:

3342

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

3343

" %s", os.strerror(e.errno))

2584

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

2585

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

3344

2586

else:

3345

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

3346

exc_info=e)

2587

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

2588

exc_info=e)

3347

2589

raise

3348

2590

except EOFError as e:

3349

log.warning("Could not load persistent state: EOFError:",

3350

exc_info=e)

3351

2591

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

2592

"EOFError:", exc_info=e)

2593

3352

2594

with PGPEngine() as pgp:

3353

2595

for client_name, client in clients_data.items():

3354

2596

# Skip removed clients

3355

2597

if client_name not in client_settings:

3356

2598

continue

3357

2599

3358

2600

# Decide which value to use after restoring saved state.

3359

2601

# We have three different values: Old config file,

3360

2602

# new config file, and saved state.

3365

2607

# For each value in new config, check if it

3366

2608

# differs from the old config value (Except for

3367

2609

# the "secret" attribute)

3368

if (name != "secret"

3369

and (value !=

3370

old_client_settings[client_name][name])):

2610

if (name != "secret" and

2611

value != old_client_settings[client_name]

2612

[name]):

3371

2613

client[name] = value

3372

2614

except KeyError:

3373

2615

pass

3374

2616

3375

2617

# Clients who has passed its expire date can still be

3376

# enabled if its last checker was successful. A Client

2618

# enabled if its last checker was successful. Clients

3377

2619

# whose checker succeeded before we stored its state is

3378

2620

# assumed to have successfully run all checkers during

3379

2621

# downtime.

3380

2622

if client["enabled"]:

3381

2623

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

3382

2624

if not client["last_checked_ok"]:

3383

log.warning("disabling client %s - Client"

3384

" never performed a successful"

3385

" checker", client_name)

2625

logger.warning(

2626

"disabling client {} - Client never "

2627

"performed a successful checker"

2628

.format(client_name))

3386

2629

client["enabled"] = False

3387

2630

elif client["last_checker_status"] != 0:

3388

log.warning("disabling client %s - Client"

3389

" last checker failed with error"

3390

" code %s", client_name,

3391

client["last_checker_status"])

2631

logger.warning(

2632

"disabling client {} - Client last"

2633

" checker failed with error code {}"

2634

.format(client_name,

2635

client["last_checker_status"]))

3392

2636

client["enabled"] = False

3393

2637

else:

3394

client["expires"] = (

3395

datetime.datetime.utcnow()

3396

+ client["timeout"])

3397

log.debug("Last checker succeeded, keeping %s"

3398

" enabled", client_name)

2638

client["expires"] = (datetime.datetime

2639

.utcnow()

2640

+ client["timeout"])

2641

logger.debug("Last checker succeeded,"

2642

" keeping {} enabled"

2643

.format(client_name))

3399

2644

try:

3400

client["secret"] = pgp.decrypt(

3401

client["encrypted_secret"],

3402

client_settings[client_name]["secret"])

2645

client["secret"] = (

2646

pgp.decrypt(client["encrypted_secret"],

2647

client_settings[client_name]

2648

["secret"]))

3403

2649

except PGPError:

3404

2650

# If decryption fails, we use secret from new settings

3405

log.debug("Failed to decrypt %s old secret",

3406

client_name)

3407

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

3408

["secret"])

3409

2651

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

2652

.format(client_name))

2653

client["secret"] = (

2654

client_settings[client_name]["secret"])

2655

3410

2656

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

3411

2657

for client_name in (set(old_client_settings)

3412

2658

- set(client_settings)):

3414

2660

for client_name in (set(client_settings)

3415

2661

- set(old_client_settings)):

3416

2662

clients_data[client_name] = client_settings[client_name]

3417

2663

3418

2664

# Create all client objects

3419

2665

for client_name, client in clients_data.items():

3420

2666

tcp_server.clients[client_name] = client_class(

3421

name=client_name,

3422

settings=client,

3423

server_settings=server_settings)

3424

2667

name = client_name, settings = client,

2668

server_settings = server_settings)

2669

3425

2670

if not tcp_server.clients:

3426

log.warning("No clients defined")

3427

2671

logger.warning("No clients defined")

2672

3428

2673

if not foreground:

3429

2674

if pidfile is not None:

3430

pid = os.getpid()

3431

2675

try:

3432

2676

with pidfile:

3433

print(pid, file=pidfile)

2677

pid = os.getpid()

2678

pidfile.write("{}\n".format(pid).encode("utf-8"))

3434

2679

except IOError:

3435

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

3436

pidfilename, pid)

2680

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

2681

pidfilename, pid)

3437

2682

del pidfile

3438

2683

del pidfilename

3439

3440

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

3441

GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,

3442

lambda: main_loop.quit() and False)

3443

2684

2685

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

2686

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

2687

3444

2688

if use_dbus:

3445

3446

@alternate_dbus_interfaces(

3447

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

3448

class MandosDBusService(DBusObjectWithObjectManager):

2689

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

2690

"se.bsnet.fukt.Mandos"})

2691

class MandosDBusService(DBusObjectWithProperties):

3449

2692

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

3450

3451

2693

def __init__(self):

3452

2694

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

3453

3454

2695

_interface = "se.recompile.Mandos"

3455

2696

2697

@dbus_interface_annotations(_interface)

2698

def _foo(self):

2699

return { "org.freedesktop.DBus.Property"

2700

".EmitsChangedSignal":

2701

"false"}

2702

3456

2703

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

3457

2704

def ClientAdded(self, objpath):

3458

2705

"D-Bus signal"

3459

2706

pass

3460

2707

3461

2708

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

3462

def ClientNotFound(self, key_id, address):

2709

def ClientNotFound(self, fingerprint, address):

3463

2710

"D-Bus signal"

3464

2711

pass

3465

3466

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

3467

"true"})

2712

3468

2713

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

3469

2714

def ClientRemoved(self, objpath, name):

3470

2715

"D-Bus signal"

3471

2716

pass

3472

3473

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

3474

"true"})

2717

3475

2718

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

3476

2719

def GetAllClients(self):

3477

2720

"D-Bus method"

3478

return dbus.Array(c.dbus_object_path for c in

3479

tcp_server.clients.values())

3480

3481

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

3482

"true"})

2721

return dbus.Array(c.dbus_object_path

2722

for c in

2723

tcp_server.clients.itervalues())

2724

3483

2725

@dbus.service.method(_interface,

3484

2726

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

3485

2727

def GetAllClientsWithProperties(self):

3486

2728

"D-Bus method"

3487

2729

return dbus.Dictionary(

3488

{c.dbus_object_path: c.GetAll(

3489

"se.recompile.Mandos.Client")

3490

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

2730

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

2731

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

3491

2732

signature="oa{sv}")

3492

2733

3493

2734

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

3494

2735

def RemoveClient(self, object_path):

3495

2736

"D-Bus method"

3496

for c in tcp_server.clients.values():

2737

for c in tcp_server.clients.itervalues():

3497

2738

if c.dbus_object_path == object_path:

3498

2739

del tcp_server.clients[c.name]

3499

2740

c.remove_from_connection()

3500

# Don't signal the disabling

2741

# Don't signal anything except ClientRemoved

3501

2742

c.disable(quiet=True)

3502

# Emit D-Bus signal for removal

3503

self.client_removed_signal(c)

2743

# Emit D-Bus signal

2744

self.ClientRemoved(object_path, c.name)

3504

2745

return

3505

2746

raise KeyError(object_path)

3506

2747

3507

2748

del _interface

3508

3509

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

3510

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

3511

def GetManagedObjects(self):

3512

"""D-Bus method"""

3513

return dbus.Dictionary(

3514

{client.dbus_object_path:

3515

dbus.Dictionary(

3516

{interface: client.GetAll(interface)

3517

for interface in

3518

client._get_all_interface_names()})

3519

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

3520

3521

def client_added_signal(self, client):

3522

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

3523

if use_dbus:

3524

# New standard signal

3525

self.InterfacesAdded(

3526

client.dbus_object_path,

3527

dbus.Dictionary(

3528

{interface: client.GetAll(interface)

3529

for interface in

3530

client._get_all_interface_names()}))

3531

# Old signal

3532

self.ClientAdded(client.dbus_object_path)

3533

3534

def client_removed_signal(self, client):

3535

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

3536

if use_dbus:

3537

# New standard signal

3538

self.InterfacesRemoved(

3539

client.dbus_object_path,

3540

client._get_all_interface_names())

3541

# Old signal

3542

self.ClientRemoved(client.dbus_object_path,

3543

client.name)

3544

2749

3545

2750

mandos_dbus_service = MandosDBusService()

3546

3547

# Save modules to variables to exempt the modules from being

3548

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

3549

mp = multiprocessing

3550

wn = wnull

3551

2751

3552

2752

def cleanup():

3553

2753

"Cleanup function; run on exit"

3554

2754

if zeroconf:

3555

2755

service.cleanup()

3556

3557

mp.active_children()

3558

wn.close()

2756

2757

multiprocessing.active_children()

2758

wnull.close()

3559

2759

if not (tcp_server.clients or client_settings):

3560

2760

return

3561

2761

3562

2762

# Store client before exiting. Secrets are encrypted with key

3563

2763

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

3564

2764

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

3565

2765

clients = {}

3566

2766

with PGPEngine() as pgp:

3567

for client in tcp_server.clients.values():

2767

for client in tcp_server.clients.itervalues():

3568

2768

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

3569

2769

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

3570

2770

key)

3571

2771

client_dict = {}

3572

2772

3573

2773

# A list of attributes that can not be pickled

3574

2774

# + secret.

3575

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

3576

"checker", "server_settings"}

3577

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

3578

.Object):

2775

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

2776

"checker", "server_settings" }

2777

for name, typ in (inspect.getmembers

2778

(dbus.service.Object)):

3579

2779

exclude.add(name)

3580

2780

3581

2781

client_dict["encrypted_secret"] = (client

3582

2782

.encrypted_secret)

3583

2783

for attr in client.client_structure:

3584

2784

if attr not in exclude:

3585

2785

client_dict[attr] = getattr(client, attr)

3586

2786

3587

2787

clients[client.name] = client_dict

3588

2788

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

3589

2789

3590

2790

try:

3591

with tempfile.NamedTemporaryFile(

3592

mode="wb",

3593

suffix=".pickle",

3594

prefix="clients-",

3595

dir=os.path.dirname(stored_state_path),

3596

delete=False) as stored_state:

3597

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

3598

protocol=2)

3599

tempname = stored_state.name

2791

with (tempfile.NamedTemporaryFile

2792

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

2793

dir=os.path.dirname(stored_state_path),

2794

delete=False)) as stored_state:

2795

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

2796

tempname=stored_state.name

3600

2797

os.rename(tempname, stored_state_path)

3601

2798

except (IOError, OSError) as e:

3602

2799

if not debug:

3605

2802

except NameError:

3606

2803

pass

3607

2804

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

3608

log.warning("Could not save persistent state: %s",

3609

os.strerror(e.errno))

2805

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

2806

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

3610

2807

else:

3611

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

3612

exc_info=e)

2808

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

2809

exc_info=e)

3613

2810

raise

3614

2811

3615

2812

# Delete all clients, and settings from config

3616

2813

while tcp_server.clients:

3617

2814

name, client = tcp_server.clients.popitem()

3618

2815

if use_dbus:

3619

2816

client.remove_from_connection()

3620

# Don't signal the disabling

2817

# Don't signal anything except ClientRemoved

3621

2818

client.disable(quiet=True)

3622

# Emit D-Bus signal for removal

3623

2819

if use_dbus:

3624

mandos_dbus_service.client_removed_signal(client)

2820

# Emit D-Bus signal

2821

mandos_dbus_service.ClientRemoved(client

2822

.dbus_object_path,

2823

client.name)

3625

2824

client_settings.clear()

3626

2825

3627

2826

atexit.register(cleanup)

3628

3629

for client in tcp_server.clients.values():

2827

2828

for client in tcp_server.clients.itervalues():

3630

2829

if use_dbus:

3631

# Emit D-Bus signal for adding

3632

mandos_dbus_service.client_added_signal(client)

2830

# Emit D-Bus signal

2831

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3633

2832

# Need to initiate checking of clients

3634

2833

if client.enabled:

3635

client.init_checker(randomize_start=True)

3636

2834

client.init_checker()

2835

3637

2836

tcp_server.enable()

3638

2837

tcp_server.server_activate()

3639

2838

3640

2839

# Find out what port we got

3641

2840

if zeroconf:

3642

2841

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

3643

2842

if use_ipv6:

3644

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

3645

" scope_id %d", *tcp_server.socket.getsockname())

2843

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

2844

" flowinfo %d, scope_id %d",

2845

*tcp_server.socket.getsockname())

3646

2846

else: # IPv4

3647

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

3648

*tcp_server.socket.getsockname())

3649

3650

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

3651

2847

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

2848

*tcp_server.socket.getsockname())

2849

2850

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

2851

3652

2852

try:

3653

2853

if zeroconf:

3654

2854

# From the Avahi example code

3655

2855

try:

3656

2856

service.activate()

3657

2857

except dbus.exceptions.DBusException as error:

3658

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

2858

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

3659

2859

cleanup()

3660

2860

sys.exit(1)

3661

2861

# End of Avahi example code

3662

3663

GLib.io_add_watch(

3664

GLib.IOChannel.unix_new(tcp_server.fileno()),

3665

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3666

lambda *args, **kwargs: (tcp_server.handle_request

3667

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

3668

3669

log.debug("Starting main loop")

2862

2863

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

2864

lambda *args, **kwargs:

2865

(tcp_server.handle_request

2866

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

2867

2868

logger.debug("Starting main loop")

3670

2869

main_loop.run()

3671

2870

except AvahiError as error:

3672

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

2871

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

3673

2872

cleanup()

3674

2873

sys.exit(1)

3675

2874

except KeyboardInterrupt:

3676

2875

if debug:

3677

2876

print("", file=sys.stderr)

3678

log.debug("Server received KeyboardInterrupt")

3679

log.debug("Server exiting")

2877

logger.debug("Server received KeyboardInterrupt")

2878

logger.debug("Server exiting")

3680

2879

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

3681

2880

cleanup()

3682

2881

3683

3684

def parse_test_args():

3685

# type: () -> argparse.Namespace

3686

parser = argparse.ArgumentParser(add_help=False)

3687

parser.add_argument("--check", action="store_true")

3688

parser.add_argument("--prefix", )

3689

args, unknown_args = parser.parse_known_args()

3690

if args.check:

3691

# Remove test options from sys.argv

3692

sys.argv[1:] = unknown_args

3693

return args

3694

3695

# Add all tests from doctest strings

3696

def load_tests(loader, tests, none):

3697

import doctest

3698

tests.addTests(doctest.DocTestSuite())

3699

return tests

3700

3701

if __name__ == "__main__":

3702

options = parse_test_args()

3703

try:

3704

if options.check:

3705

extra_test_prefix = options.prefix

3706

if extra_test_prefix is not None:

3707

if not (unittest.main(argv=[""], exit=False)

3708

.result.wasSuccessful()):

3709

sys.exit(1)

3710

class ExtraTestLoader(unittest.TestLoader):

3711

testMethodPrefix = extra_test_prefix

3712

# Call using ./scriptname --test [--verbose]

3713

unittest.main(argv=[""], testLoader=ExtraTestLoader())

3714

else:

3715

unittest.main(argv=[""])

3716

else:

3717

main()

3718

finally:

3719

logging.shutdown()

3720

3721

# Local Variables:

3722

# run-tests:

3723

# (lambda (&optional extra)

3724

# (if (not (funcall run-tests-in-test-buffer default-directory

3725

# extra))

3726

# (funcall show-test-buffer-in-test-window)

3727

# (funcall remove-test-window)

3728

# (if extra (message "Extra tests run successfully!"))))

3729

# run-tests-in-test-buffer:

3730

# (lambda (dir &optional extra)

3731

# (with-current-buffer (get-buffer-create "*Test*")

3732

# (setq buffer-read-only nil

3733

# default-directory dir)

3734

# (erase-buffer)

3735

# (compilation-mode))

3736

# (let ((process-result

3737

# (let ((inhibit-read-only t))

3738

# (process-file-shell-command

3739

# (funcall get-command-line extra) nil "*Test*"))))

3740

# (and (numberp process-result)

3741

# (= process-result 0))))

3742

# get-command-line:

3743

# (lambda (&optional extra)

3744

# (let ((quoted-script

3745

# (shell-quote-argument (funcall get-script-name))))

3746

# (format

3747

# (concat "%s --check" (if extra " --prefix=atest" ""))

3748

# quoted-script)))

3749

# get-script-name:

3750

# (lambda ()

3751

# (if (fboundp 'file-local-name)

3752

# (file-local-name (buffer-file-name))

3753

# (or (file-remote-p (buffer-file-name) 'localname)

3754

# (buffer-file-name))))

3755

# remove-test-window:

3756

# (lambda ()

3757

# (let ((test-window (get-buffer-window "*Test*")))

3758

# (if test-window (delete-window test-window))))

3759

# show-test-buffer-in-test-window:

3760

# (lambda ()

3761

# (when (not (get-buffer-window-list "*Test*"))

3762

# (setq next-error-last-buffer (get-buffer "*Test*"))

3763

# (let* ((side (if (>= (window-width) 146) 'right 'bottom))

3764

# (display-buffer-overriding-action

3765

# `((display-buffer-in-side-window) (side . ,side)

3766

# (window-height . fit-window-to-buffer)

3767

# (window-width . fit-window-to-buffer))))

3768

# (display-buffer "*Test*"))))

3769

# eval:

3770

# (progn

3771

# (let* ((run-extra-tests (lambda () (interactive)

3772

# (funcall run-tests t)))

3773

# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t

3774

# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c

3775

# (setq minor-mode-overriding-map-alist

3776

# (cons `(run-tests . ,outer-keymap)

3777

# minor-mode-overriding-map-alist)))

3778

# (add-hook 'after-save-hook run-tests 90 t))

3779

# End:

2882

if __name__ == '__main__':

2883

main()