/mandos/release : revision 237.7.333

1

#!/usr/bin/python

1

#!/usr/bin/python2.7

2

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

3

#

4

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

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

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

18

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

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

import SocketServer as socketserver

37

from future_builtins import *

38

39

try:

40

import SocketServer as socketserver

41

except ImportError:

42

import socketserver

38

43

import socket

39

44

import argparse

40

45

import datetime

45

50

import gnutls.library.functions

46

51

import gnutls.library.constants

47

52

import gnutls.library.types

48

import ConfigParser as configparser

53

try:

54

import ConfigParser as configparser

55

except ImportError:

56

import configparser

49

57

import sys

50

58

import re

51

59

import os

60

68

import struct

61

69

import fcntl

62

70

import functools

63

import cPickle as pickle

71

try:

72

import cPickle as pickle

73

except ImportError:

74

import pickle

64

75

import multiprocessing

65

76

import types

66

77

import binascii

67

78

import tempfile

79

import itertools

80

import collections

81

import codecs

68

82

69

83

import dbus

70

84

import dbus.service

71

import gobject

85

try:

86

import gobject

87

except ImportError:

88

from gi.repository import GObject as gobject

72

89

import avahi

73

90

from dbus.mainloop.glib import DBusGMainLoop

74

91

import ctypes

75

92

import ctypes.util

76

93

import xml.dom.minidom

77

94

import inspect

78

import GnuPGInterface

79

95

80

96

try:

81

97

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

85

101

except ImportError:

86

102

SO_BINDTODEVICE = None

87

103

88

version = "1.4.1"

104

if sys.version_info.major == 2:

105

str = unicode

106

107

version = "1.6.9"

89

108

stored_state_file = "clients.pickle"

90

109

91

110

logger = logging.getLogger()

92

syslogger = (logging.handlers.SysLogHandler

93

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

94

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

111

syslogger = None

95

112

96

113

try:

97

if_nametoindex = (ctypes.cdll.LoadLibrary

98

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

99

.if_nametoindex)

114

if_nametoindex = ctypes.cdll.LoadLibrary(

115

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

100

116

except (OSError, AttributeError):

117

101

118

def if_nametoindex(interface):

102

119

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

103

120

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

104

121

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

105

122

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

106

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

107

interface))

108

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

109

ifreq[16:20])[0]

123

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

124

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

110

125

return interface_index

111

126

112

127

113

def initlogger(level=logging.WARNING):

128

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

114

129

"""init logger and add loglevel"""

115

130

131

global syslogger

132

syslogger = (logging.handlers.SysLogHandler(

133

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

134

address = "/dev/log"))

116

135

syslogger.setFormatter(logging.Formatter

117

136

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

118

137

' %(message)s'))

119

138

logger.addHandler(syslogger)

120

139

121

console = logging.StreamHandler()

122

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

123

' [%(process)d]:'

124

' %(levelname)s:'

125

' %(message)s'))

126

logger.addHandler(console)

140

if debug:

141

console = logging.StreamHandler()

142

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

143

' [%(process)d]:'

144

' %(levelname)s:'

145

' %(message)s'))

146

logger.addHandler(console)

127

147

logger.setLevel(level)

128

148

129

149

134

154

135

155

class PGPEngine(object):

136

156

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

157

137

158

def __init__(self):

138

self.gnupg = GnuPGInterface.GnuPG()

139

159

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

140

self.gnupg = GnuPGInterface.GnuPG()

141

self.gnupg.options.meta_interactive = False

142

self.gnupg.options.homedir = self.tempdir

143

self.gnupg.options.extra_args.extend(['--force-mdc',

144

'--quiet'])

160

self.gnupgargs = ['--batch',

161

'--home', self.tempdir,

162

'--force-mdc',

163

'--quiet',

164

'--no-use-agent']

145

165

146

166

def __enter__(self):

147

167

return self

148

168

149

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

169

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

150

170

self._cleanup()

151

171

return False

152

172

169

189

def password_encode(self, password):

170

190

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

171

191

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

172

return b"mandos" + binascii.hexlify(password)

192

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

193

if len(encoded) > 2048:

194

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

195

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

196

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

197

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

198

return encoded

173

199

174

200

def encrypt(self, data, password):

175

self.gnupg.passphrase = self.password_encode(password)

176

with open(os.devnull) as devnull:

177

try:

178

proc = self.gnupg.run(['--symmetric'],

179

create_fhs=['stdin', 'stdout'],

180

attach_fhs={'stderr': devnull})

181

with contextlib.closing(proc.handles['stdin']) as f:

182

f.write(data)

183

with contextlib.closing(proc.handles['stdout']) as f:

184

ciphertext = f.read()

185

proc.wait()

186

except IOError as e:

187

raise PGPError(e)

188

self.gnupg.passphrase = None

201

passphrase = self.password_encode(password)

202

with tempfile.NamedTemporaryFile(

203

dir=self.tempdir) as passfile:

204

passfile.write(passphrase)

205

passfile.flush()

206

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

207

'--passphrase-file',

208

passfile.name]

209

+ self.gnupgargs,

210

stdin = subprocess.PIPE,

211

stdout = subprocess.PIPE,

212

stderr = subprocess.PIPE)

213

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

214

if proc.returncode != 0:

215

raise PGPError(err)

189

216

return ciphertext

190

217

191

218

def decrypt(self, data, password):

192

self.gnupg.passphrase = self.password_encode(password)

193

with open(os.devnull) as devnull:

194

try:

195

proc = self.gnupg.run(['--decrypt'],

196

create_fhs=['stdin', 'stdout'],

197

attach_fhs={'stderr': devnull})

198

with contextlib.closing(proc.handles['stdin'] ) as f:

199

f.write(data)

200

with contextlib.closing(proc.handles['stdout']) as f:

201

decrypted_plaintext = f.read()

202

proc.wait()

203

except IOError as e:

204

raise PGPError(e)

205

self.gnupg.passphrase = None

219

passphrase = self.password_encode(password)

220

with tempfile.NamedTemporaryFile(

221

dir = self.tempdir) as passfile:

222

passfile.write(passphrase)

223

passfile.flush()

224

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

225

'--passphrase-file',

226

passfile.name]

227

+ self.gnupgargs,

228

stdin = subprocess.PIPE,

229

stdout = subprocess.PIPE,

230

stderr = subprocess.PIPE)

231

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

232

if proc.returncode != 0:

233

raise PGPError(err)

206

234

return decrypted_plaintext

207

235

208

236

209

210

237

class AvahiError(Exception):

211

238

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

212

239

self.value = value

213

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

214

def __unicode__(self):

215

return unicode(repr(self.value))

240

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

241

**kwargs)

242

216

243

217

244

class AvahiServiceError(AvahiError):

218

245

pass

219

246

247

220

248

class AvahiGroupError(AvahiError):

221

249

pass

222

250

229

257

Used to optionally bind to the specified interface.

230

258

name: string; Example: 'Mandos'

231

259

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

232

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

260

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

233

261

port: integer; what port to announce

234

262

TXT: list of strings; TXT record for the service

235

263

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

241

269

server: D-Bus Server

242

270

bus: dbus.SystemBus()

243

271

"""

244

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

245

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

246

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

247

protocol = avahi.PROTO_UNSPEC, bus = None):

272

273

def __init__(self,

274

interface = avahi.IF_UNSPEC,

275

name = None,

276

servicetype = None,

277

port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

248

284

self.interface = interface

249

285

self.name = name

250

286

self.type = servicetype

259

295

self.server = None

260

296

self.bus = bus

261

297

self.entry_group_state_changed_match = None

262

def rename(self):

298

299

def rename(self, remove=True):

263

300

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

264

301

if self.rename_count >= self.max_renames:

265

302

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

266

303

" after %i retries, exiting.",

267

304

self.rename_count)

268

305

raise AvahiServiceError("Too many renames")

269

self.name = unicode(self.server

270

.GetAlternativeServiceName(self.name))

306

self.name = str(

307

self.server.GetAlternativeServiceName(self.name))

308

self.rename_count += 1

271

309

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

272

310

self.name)

273

self.remove()

311

if remove:

312

self.remove()

274

313

try:

275

314

self.add()

276

315

except dbus.exceptions.DBusException as error:

277

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

278

self.cleanup()

279

os._exit(1)

280

self.rename_count += 1

316

if (error.get_dbus_name()

317

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

318

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

319

return self.rename(remove=False)

320

else:

321

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

322

self.cleanup()

323

os._exit(1)

324

281

325

def remove(self):

282

326

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

283

327

if self.entry_group_state_changed_match is not None:

285

329

self.entry_group_state_changed_match = None

286

330

if self.group is not None:

287

331

self.group.Reset()

332

288

333

def add(self):

289

334

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

290

335

self.remove()

307

352

dbus.UInt16(self.port),

308

353

avahi.string_array_to_txt_array(self.TXT))

309

354

self.group.Commit()

355

310

356

def entry_group_state_changed(self, state, error):

311

357

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

312

358

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

318

364

self.rename()

319

365

elif state == avahi.ENTRY_GROUP_FAILURE:

320

366

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

321

unicode(error))

322

raise AvahiGroupError("State changed: %s"

323

% unicode(error))

367

str(error))

368

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

369

324

370

def cleanup(self):

325

371

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

326

372

if self.group is not None:

331

377

pass

332

378

self.group = None

333

379

self.remove()

380

334

381

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

335

382

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

336

383

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

337

bad_states = { avahi.SERVER_INVALID:

338

"Zeroconf server invalid",

339

avahi.SERVER_REGISTERING: None,

340

avahi.SERVER_COLLISION:

341

"Zeroconf server name collision",

342

avahi.SERVER_FAILURE:

343

"Zeroconf server failure" }

384

bad_states = {

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

386

avahi.SERVER_REGISTERING: None,

387

avahi.SERVER_COLLISION: "Zeroconf server name collision",

388

avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

344

390

if state in bad_states:

345

391

if bad_states[state] is not None:

346

392

if error is None:

349

395

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

350

396

self.cleanup()

351

397

elif state == avahi.SERVER_RUNNING:

352

self.add()

398

try:

399

self.add()

400

except dbus.exceptions.DBusException as error:

401

if (error.get_dbus_name()

402

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

403

logger.info("Local Zeroconf service name"

404

" collision.")

405

return self.rename(remove=False)

406

else:

407

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

408

self.cleanup()

409

os._exit(1)

353

410

else:

354

411

if error is None:

355

412

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

356

413

else:

357

414

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

415

358

416

def activate(self):

359

417

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

360

418

if self.server is None:

364

422

follow_name_owner_changes=True),

365

423

avahi.DBUS_INTERFACE_SERVER)

366

424

self.server.connect_to_signal("StateChanged",

367

self.server_state_changed)

425

self.server_state_changed)

368

426

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

369

427

428

370

429

class AvahiServiceToSyslog(AvahiService):

371

def rename(self):

430

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

372

431

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

373

ret = AvahiService.rename(self)

374

syslogger.setFormatter(logging.Formatter

375

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

376

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

377

% self.name))

432

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

433

syslogger.setFormatter(logging.Formatter(

434

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

435

.format(self.name)))

378

436

return ret

379

437

380

def timedelta_to_milliseconds(td):

381

"Convert a datetime.timedelta() to milliseconds"

382

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

383

+ (td.seconds * 1000)

384

+ (td.microseconds // 1000))

385

438

def call_pipe(connection, # : multiprocessing.Connection

439

func, *args, **kwargs):

440

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

441

442

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

443

return value on the provided multiprocessing.Connection.

444

"""

445

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

446

connection.close()

447

386

448

class Client(object):

387

449

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

388

450

413

475

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

414

476

last_checker_status: integer between 0 and 255 reflecting exit

415

477

status of last checker. -1 reflects crashed

416

checker, or None.

478

checker, -2 means no checker completed yet.

479

last_checker_signal: The signal which killed the last checker, if

480

last_checker_status is -1

417

481

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

418

482

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

419

483

D-Bus identifiers

420

484

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

421

485

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

422

486

until this client is disabled

423

extended_timeout: extra long timeout when password has been sent

487

extended_timeout: extra long timeout when secret has been sent

424

488

runtime_expansions: Allowed attributes for runtime expansion.

425

489

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

426

490

disabled, or None

491

server_settings: The server_settings dict from main()

427

492

"""

428

493

429

494

runtime_expansions = ("approval_delay", "approval_duration",

430

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

431

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

495

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

496

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

497

"last_approval_request", "last_checked_ok",

432

498

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

433

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

434

"extended_timeout": "15m",

435

"interval": "2m",

436

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

437

"host": "",

438

"approval_delay": "0s",

439

"approval_duration": "1s",

440

"approved_by_default": "True",

441

"enabled": "True",

442

}

443

444

def timeout_milliseconds(self):

445

"Return the 'timeout' attribute in milliseconds"

446

return timedelta_to_milliseconds(self.timeout)

447

448

def extended_timeout_milliseconds(self):

449

"Return the 'extended_timeout' attribute in milliseconds"

450

return timedelta_to_milliseconds(self.extended_timeout)

451

452

def interval_milliseconds(self):

453

"Return the 'interval' attribute in milliseconds"

454

return timedelta_to_milliseconds(self.interval)

455

456

def approval_delay_milliseconds(self):

457

return timedelta_to_milliseconds(self.approval_delay)

458

499

client_defaults = {

500

"timeout": "PT5M",

501

"extended_timeout": "PT15M",

502

"interval": "PT2M",

503

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

504

"host": "",

505

"approval_delay": "PT0S",

506

"approval_duration": "PT1S",

507

"approved_by_default": "True",

508

"enabled": "True",

509

}

510

459

511

@staticmethod

460

512

def config_parser(config):

461

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

513

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

462

514

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

463

with exceptions for any special settings as defined above"""

515

with exceptions for any special settings as defined above.

516

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

517

value given the same arguments.

518

"""

464

519

settings = {}

465

520

for client_name in config.sections():

466

521

section = dict(config.items(client_name))

470

525

# Reformat values from string types to Python types

471

526

client["approved_by_default"] = config.getboolean(

472

527

client_name, "approved_by_default")

473

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

528

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

529

"enabled")

474

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

475

534

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

476

535

.replace(" ", ""))

477

536

if "secret" in section:

482

541

"rb") as secfile:

483

542

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

484

543

else:

485

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

486

% section)

544

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

545

.format(section))

487

546

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

488

547

client["extended_timeout"] = string_to_delta(

489

548

section["extended_timeout"])

495

554

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

496

555

client["last_approval_request"] = None

497

556

client["last_checked_ok"] = None

498

client["last_checker_status"] = None

499

if client["enabled"]:

500

client["last_enabled"] = datetime.datetime.utcnow()

501

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

502

+ client["timeout"])

503

else:

504

client["last_enabled"] = None

505

client["expires"] = None

506

557

client["last_checker_status"] = -2

558

507

559

return settings

508

509

510

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

511

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

512

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

513

attribute."""

560

561

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

514

562

self.name = name

563

if server_settings is None:

564

server_settings = {}

565

self.server_settings = server_settings

515

566

# adding all client settings

516

for setting, value in settings.iteritems():

567

for setting, value in settings.items():

517

568

setattr(self, setting, value)

518

569

570

if self.enabled:

571

if not hasattr(self, "last_enabled"):

572

self.last_enabled = datetime.datetime.utcnow()

573

if not hasattr(self, "expires"):

574

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

575

+ self.timeout)

576

else:

577

self.last_enabled = None

578

self.expires = None

579

519

580

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

520

# Uppercase and remove spaces from fingerprint for later

521

# comparison purposes with return value from the fingerprint()

522

# function

523

581

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

524

self.created = settings.get("created", datetime.datetime.utcnow())

525

582

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

583

datetime.datetime.utcnow())

584

526

585

# attributes specific for this server instance

527

586

self.checker = None

528

587

self.checker_initiator_tag = None

531

590

self.current_checker_command = None

532

591

self.approved = None

533

592

self.approvals_pending = 0

534

self.changedstate = (multiprocessing_manager

535

.Condition(multiprocessing_manager

536

.Lock()))

537

self.client_structure = [attr for attr in

538

self.__dict__.iterkeys()

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

539

597

if not attr.startswith("_")]

540

598

self.client_structure.append("client_structure")

541

599

542

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

543

lambda obj:

544

isinstance(obj,

545

property)):

600

for name, t in inspect.getmembers(

601

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

546

602

if not name.startswith("_"):

547

603

self.client_structure.append(name)

548

604

556

612

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

557

613

# Already enabled

558

614

return

559

self.send_changedstate()

560

615

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

561

616

self.enabled = True

562

617

self.last_enabled = datetime.datetime.utcnow()

563

618

self.init_checker()

619

self.send_changedstate()

564

620

565

621

def disable(self, quiet=True):

566

622

"""Disable this client."""

567

623

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

568

624

return False

569

625

if not quiet:

570

self.send_changedstate()

571

if not quiet:

572

626

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

573

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

627

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

574

628

gobject.source_remove(self.disable_initiator_tag)

575

629

self.disable_initiator_tag = None

576

630

self.expires = None

577

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

631

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

578

632

gobject.source_remove(self.checker_initiator_tag)

579

633

self.checker_initiator_tag = None

580

634

self.stop_checker()

581

635

self.enabled = False

636

if not quiet:

637

self.send_changedstate()

582

638

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

583

639

return False

584

640

588

644

def init_checker(self):

589

645

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

590

646

# and every interval from then on.

591

self.checker_initiator_tag = (gobject.timeout_add

592

(self.interval_milliseconds(),

593

self.start_checker))

647

if self.checker_initiator_tag is not None:

648

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

594

652

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

595

self.disable_initiator_tag = (gobject.timeout_add

596

(self.timeout_milliseconds(),

597

self.disable))

653

if self.disable_initiator_tag is not None:

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

598

657

# Also start a new checker *right now*.

599

658

self.start_checker()

600

659

601

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

660

def checker_callback(self, source, condition, connection,

661

command):

602

662

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

603

663

self.checker_callback_tag = None

604

664

self.checker = None

605

if os.WIFEXITED(condition):

606

self.last_checker_status = os.WEXITSTATUS(condition)

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

607

672

if self.last_checker_status == 0:

608

673

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

609

674

vars(self))

610

675

self.checked_ok()

611

676

else:

612

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

613

vars(self))

677

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

614

678

else:

615

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

616

681

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

617

682

vars(self))

618

619

def checked_ok(self, timeout=None):

620

"""Bump up the timeout for this client.

621

622

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

623

alive and well.

624

"""

683

return False

684

685

def checked_ok(self):

686

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

687

self.last_checked_ok = datetime.datetime.utcnow()

688

self.last_checker_status = 0

689

self.last_checker_signal = None

690

self.bump_timeout()

691

692

def bump_timeout(self, timeout=None):

693

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

625

694

if timeout is None:

626

695

timeout = self.timeout

627

self.last_checked_ok = datetime.datetime.utcnow()

628

696

if self.disable_initiator_tag is not None:

629

697

gobject.source_remove(self.disable_initiator_tag)

698

self.disable_initiator_tag = None

630

699

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

631

self.disable_initiator_tag = (gobject.timeout_add

632

(timedelta_to_milliseconds

633

(timeout), self.disable))

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

634

702

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

635

703

636

704

def need_approval(self):

642

710

If a checker already exists, leave it running and do

643

711

nothing."""

644

712

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

645

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

646

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

647

# client would inevitably timeout, since no checker would get

648

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

713

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

714

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

715

# would inevitably timeout, since no checker would get a

716

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

649

717

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

650

718

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

651

719

# should be.

652

720

653

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

654

try:

655

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

656

except (AttributeError, OSError) as error:

657

if (isinstance(error, OSError)

658

and error.errno != errno.ECHILD):

659

raise error

660

else:

661

if pid:

662

logger.warning("Checker was a zombie")

663

gobject.source_remove(self.checker_callback_tag)

664

self.checker_callback(pid, status,

665

self.current_checker_command)

721

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

722

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

723

self.checker.join()

724

self.checker = None

666

725

# Start a new checker if needed

667

726

if self.checker is None:

727

# Escape attributes for the shell

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

668

731

try:

669

# In case checker_command has exactly one % operator

670

command = self.checker_command % self.host

671

except TypeError:

672

# Escape attributes for the shell

673

escaped_attrs = dict(

674

(attr,

675

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

676

errors=

677

'replace')))

678

for attr in

679

self.runtime_expansions)

680

681

try:

682

command = self.checker_command % escaped_attrs

683

except TypeError as error:

684

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

685

' %s', self.checker_command, error)

686

return True # Try again later

732

command = self.checker_command % escaped_attrs

733

except TypeError as error:

734

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

735

self.checker_command,

736

exc_info=error)

737

return True # Try again later

687

738

self.current_checker_command = command

688

try:

689

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

690

command, self.name)

691

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

692

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

693

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

694

# always replaced by /dev/null.)

695

self.checker = subprocess.Popen(command,

696

close_fds=True,

697

shell=True, cwd="/")

698

self.checker_callback_tag = (gobject.child_watch_add

699

(self.checker.pid,

700

self.checker_callback,

701

data=command))

702

# The checker may have completed before the gobject

703

# watch was added. Check for this.

704

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

705

if pid:

706

gobject.source_remove(self.checker_callback_tag)

707

self.checker_callback(pid, status, command)

708

except OSError as error:

709

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

710

error)

739

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

740

self.name)

741

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

742

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

743

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

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

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

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

763

self.checker_callback, pipe[0], command)

711

764

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

712

765

return True

713

766

719

772

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

720

773

return

721

774

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

722

try:

723

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

724

#time.sleep(0.5)

725

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

726

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

727

except OSError as error:

728

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

729

raise

775

self.checker.terminate()

730

776

self.checker = None

731

777

732

778

733

def dbus_service_property(dbus_interface, signature="v",

734

access="readwrite", byte_arrays=False):

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

735

783

"""Decorators for marking methods of a DBusObjectWithProperties to

736

784

become properties on the D-Bus.

737

785

746

794

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

747

795

if byte_arrays and signature != "ay":

748

796

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

749

" signature %r" % signature)

797

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

798

750

799

def decorator(func):

751

800

func._dbus_is_property = True

752

801

func._dbus_interface = dbus_interface

757

806

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

758

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

759

808

return func

809

810

return decorator

811

812

813

def dbus_interface_annotations(dbus_interface):

814

"""Decorator for marking functions returning interface annotations

815

816

Usage:

817

818

@dbus_interface_annotations("org.example.Interface")

819

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

820

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

821

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

822

"false"}

823

"""

824

825

def decorator(func):

826

func._dbus_is_interface = True

827

func._dbus_interface = dbus_interface

828

func._dbus_name = dbus_interface

829

return func

830

831

return decorator

832

833

834

def dbus_annotations(annotations):

835

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

836

Usage:

837

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

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

842

access="r")

843

def Property_dbus_property(self):

844

return dbus.Boolean(False)

845

846

See also the DBusObjectWithAnnotations class.

847

"""

848

849

def decorator(func):

850

func._dbus_annotations = annotations

851

return func

852

760

853

return decorator

761

854

762

855

763

856

class DBusPropertyException(dbus.exceptions.DBusException):

764

857

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

765

858

"""

766

def __unicode__(self):

767

return unicode(str(self))

859

pass

768

860

769

861

770

862

class DBusPropertyAccessException(DBusPropertyException):

779

871

pass

780

872

781

873

782

class DBusObjectWithProperties(dbus.service.Object):

874

class DBusObjectWithAnnotations(dbus.service.Object):

875

"""A D-Bus object with annotations.

876

877

Classes inheriting from this can use the dbus_annotations

878

decorator to add annotations to methods or signals.

879

"""

880

881

@staticmethod

882

def _is_dbus_thing(thing):

883

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

884

885

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

886

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

887

"""

888

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

889

False)

890

891

def _get_all_dbus_things(self, thing):

892

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

893

"""

894

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

895

athing.__get__(self))

896

for cls in self.__class__.__mro__

897

for name, athing in

898

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

899

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

904

def Introspect(self, object_path, connection):

905

"""Overloading of standard D-Bus method.

906

907

Inserts annotation tags on methods and signals.

908

"""

909

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

910

connection)

911

try:

912

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

913

914

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

915

# Add annotation tags

916

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

917

for tag in if_tag.getElementsByTagName(typ):

918

annots = dict()

919

for name, prop in (self.

920

_get_all_dbus_things(typ)):

921

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

922

and prop._dbus_interface

923

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

924

annots.update(getattr(

925

prop, "_dbus_annotations", {}))

926

for name, value in annots.items():

927

ann_tag = document.createElement(

928

"annotation")

929

ann_tag.setAttribute("name", name)

930

ann_tag.setAttribute("value", value)

931

tag.appendChild(ann_tag)

932

# Add interface annotation tags

933

for annotation, value in dict(

934

itertools.chain.from_iterable(

935

annotations().items()

936

for name, annotations

937

in self._get_all_dbus_things("interface")

938

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

939

)).items():

940

ann_tag = document.createElement("annotation")

941

ann_tag.setAttribute("name", annotation)

942

ann_tag.setAttribute("value", value)

943

if_tag.appendChild(ann_tag)

944

# Fix argument name for the Introspect method itself

945

if (if_tag.getAttribute("name")

946

== dbus.INTROSPECTABLE_IFACE):

947

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

948

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

949

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

950

if (arg.getAttribute("direction")

951

== "out"):

952

arg.setAttribute("name",

953

"xml_data")

954

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

955

document.unlink()

956

except (AttributeError, xml.dom.DOMException,

957

xml.parsers.expat.ExpatError) as error:

958

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

959

exc_info=error)

960

return xmlstring

961

962

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

783

964

"""A D-Bus object with properties.

784

965

785

966

Classes inheriting from this can use the dbus_service_property

787

968

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

788

969

"""

789

970

790

@staticmethod

791

def _is_dbus_property(obj):

792

return getattr(obj, "_dbus_is_property", False)

793

794

def _get_all_dbus_properties(self):

795

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

796

"""

797

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

798

for cls in self.__class__.__mro__

799

for name, prop in

800

inspect.getmembers(cls, self._is_dbus_property))

801

802

971

def _get_dbus_property(self, interface_name, property_name):

803

972

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

804

973

property with the specified name and interface.

805

974

"""

806

for cls in self.__class__.__mro__:

807

for name, value in (inspect.getmembers

808

(cls, self._is_dbus_property)):

975

for cls in self.__class__.__mro__:

976

for name, value in inspect.getmembers(

977

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

809

978

if (value._dbus_name == property_name

810

979

and value._dbus_interface == interface_name):

811

980

return value.__get__(self)

812

981

813

982

# No such property

814

raise DBusPropertyNotFound(self.dbus_object_path + ":"

815

+ interface_name + "."

816

+ property_name)

817

818

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

983

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

984

self.dbus_object_path, interface_name, property_name))

985

986

@classmethod

987

def _get_all_interface_names(cls):

988

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

989

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

990

"_dbus_interface", None)

991

for x in (inspect.getmro(cls))

992

for attr in dir(x))

993

if name is not None)

994

995

@dbus.service.method(dbus.PROPERTIES_IFACE,

996

in_signature="ss",

819

997

out_signature="v")

820

998

def Get(self, interface_name, property_name):

821

999

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

839

1017

# The byte_arrays option is not supported yet on

840

1018

# signatures other than "ay".

841

1019

if prop._dbus_signature != "ay":

842

raise ValueError

843

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

844

for byte in value))

1020

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

1021

"'ay' signature {!r}"

1022

.format(prop._dbus_signature))

1023

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

1024

for byte in value))

845

1025

prop(value)

846

1026

847

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

1027

@dbus.service.method(dbus.PROPERTIES_IFACE,

1028

in_signature="s",

848

1029

out_signature="a{sv}")

849

1030

def GetAll(self, interface_name):

850

1031

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

853

1034

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

854

1035

"""

855

1036

properties = {}

856

for name, prop in self._get_all_dbus_properties():

1037

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

857

1038

if (interface_name

858

1039

and interface_name != prop._dbus_interface):

859

1040

# Interface non-empty but did not match

865

1046

if not hasattr(value, "variant_level"):

866

1047

properties[name] = value

867

1048

continue

868

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

869

value.variant_level+1)

1049

properties[name] = type(value)(

1050

value, variant_level = value.variant_level + 1)

870

1051

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

871

1052

1053

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

1054

def PropertiesChanged(self, interface_name, changed_properties,

1055

invalidated_properties):

1056

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

1057

standard.

1058

"""

1059

pass

1060

872

1061

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

873

1062

out_signature="s",

874

1063

path_keyword='object_path',

875

1064

connection_keyword='connection')

876

1065

def Introspect(self, object_path, connection):

877

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

1066

"""Overloading of standard D-Bus method.

1067

1068

Inserts property tags and interface annotation tags.

878

1069

"""

879

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

880

connection)

1070

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1071

object_path,

1072

connection)

881

1073

try:

882

1074

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

1075

883

1076

def make_tag(document, name, prop):

884

1077

e = document.createElement("property")

885

1078

e.setAttribute("name", name)

886

1079

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

887

1080

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

888

1081

return e

1082

889

1083

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

1084

# Add property tags

890

1085

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

891

1086

for name, prop

892

in self._get_all_dbus_properties()

1087

in self._get_all_dbus_things("property")

893

1088

if prop._dbus_interface

894

1089

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

895

1090

if_tag.appendChild(tag)

1091

# Add annotation tags for properties

1092

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

1093

annots = dict()

1094

for name, prop in self._get_all_dbus_things(

1095

"property"):

1096

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

1097

and prop._dbus_interface

1098

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

1099

annots.update(getattr(

1100

prop, "_dbus_annotations", {}))

1101

for name, value in annots.items():

1102

ann_tag = document.createElement(

1103

"annotation")

1104

ann_tag.setAttribute("name", name)

1105

ann_tag.setAttribute("value", value)

1106

tag.appendChild(ann_tag)

896

1107

# Add the names to the return values for the

897

1108

# "org.freedesktop.DBus.Properties" methods

898

1109

if (if_tag.getAttribute("name")

913

1124

except (AttributeError, xml.dom.DOMException,

914

1125

xml.parsers.expat.ExpatError) as error:

915

1126

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

916

error)

917

return xmlstring

918

919

920

def datetime_to_dbus (dt, variant_level=0):

1127

exc_info=error)

1128

return xmlstring

1129

1130

try:

1131

dbus.OBJECT_MANAGER_IFACE

1132

except AttributeError:

1133

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

1134

1135

class DBusObjectWithObjectManager(DBusObjectWithAnnotations):

1136

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

1137

1138

Classes inheriting from this exposes the standard

1139

GetManagedObjects call and the InterfacesAdded and

1140

InterfacesRemoved signals on the standard

1141

"org.freedesktop.DBus.ObjectManager" interface.

1142

1143

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

1144

manually.

1145

"""

1146

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

1147

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

1148

def GetManagedObjects(self):

1149

"""This function must be overridden"""

1150

raise NotImplementedError()

1151

1152

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1153

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

1154

def InterfacesAdded(self, object_path, interfaces_and_properties):

1155

pass

1156

1157

@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,

1158

signature = "oas")

1159

def InterfacesRemoved(self, object_path, interfaces):

1160

pass

1161

1162

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1163

out_signature = "s",

1164

path_keyword = 'object_path',

1165

connection_keyword = 'connection')

1166

def Introspect(self, object_path, connection):

1167

"""Overloading of standard D-Bus method.

1168

1169

Override return argument name of GetManagedObjects to be

1170

"objpath_interfaces_and_properties"

1171

"""

1172

xmlstring = DBusObjectWithAnnotations(self, object_path,

1173

connection)

1174

try:

1175

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

1176

1177

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

1178

# Fix argument name for the GetManagedObjects method

1179

if (if_tag.getAttribute("name")

1180

== dbus.OBJECT_MANAGER_IFACE):

1181

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

1182

if (cn.getAttribute("name")

1183

== "GetManagedObjects"):

1184

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

1185

if (arg.getAttribute("direction")

1186

== "out"):

1187

arg.setAttribute(

1188

"name",

1189

"objpath_interfaces"

1190

"_and_properties")

1191

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

1192

document.unlink()

1193

except (AttributeError, xml.dom.DOMException,

1194

xml.parsers.expat.ExpatError) as error:

1195

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

1196

exc_info = error)

1197

return xmlstring

1198

1199

def datetime_to_dbus(dt, variant_level=0):

921

1200

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

922

1201

if dt is None:

923

1202

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

924

return dbus.String(dt.isoformat(),

925

variant_level=variant_level)

926

927

928

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

929

.__metaclass__):

930

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

931

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

1203

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

1204

1205

1206

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1207

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

1208

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

1209

interface names according to the "alt_interface_names" mapping.

1210

Usage:

1211

1212

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

1213

"net.example.AlternateInterface"})

1214

class SampleDBusObject(dbus.service.Object):

1215

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

1216

def SampleDBusMethod():

1217

pass

1218

1219

The above "SampleDBusMethod" on "SampleDBusObject" will be

1220

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

1221

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

1222

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

1223

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

1224

1225

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

1226

(from DBusObjectWithProperties) and interfaces (from the

1227

dbus_interface_annotations decorator).

932

1228

"""

933

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

934

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

935

# methods, signals, or properties in them

936

for base in (b for b in bases

937

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

938

# Go though all attributes of the base class

939

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

1229

1230

def wrapper(cls):

1231

for orig_interface_name, alt_interface_name in (

1232

alt_interface_names.items()):

1233

attr = {}

1234

interface_names = set()

1235

# Go though all attributes of the class

1236

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

940

1237

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

941

1238

# with the wrong interface name

942

1239

if (not hasattr(attribute, "_dbus_interface")

943

or not attribute._dbus_interface

944

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

1240

or not attribute._dbus_interface.startswith(

1241

orig_interface_name)):

945

1242

continue

946

1243

# Create an alternate D-Bus interface name based on

947

1244

# the current name

948

alt_interface = (attribute._dbus_interface

949

.replace("se.recompile.Mandos",

950

"se.bsnet.fukt.Mandos"))

1245

alt_interface = attribute._dbus_interface.replace(

1246

orig_interface_name, alt_interface_name)

1247

interface_names.add(alt_interface)

951

1248

# Is this a D-Bus signal?

952

1249

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

953

# Extract the original non-method function by

954

# black magic

955

nonmethod_func = (dict(

1250

if sys.version_info.major == 2:

1251

# Extract the original non-method undecorated

1252

# function by black magic

1253

nonmethod_func = (dict(

956

1254

zip(attribute.func_code.co_freevars,

957

attribute.__closure__))["func"]

958

.cell_contents)

1255

attribute.__closure__))

1256

["func"].cell_contents)

1257

else:

1258

nonmethod_func = attribute

959

1259

# Create a new, but exactly alike, function

960

1260

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

961

1261

# with the alternate D-Bus interface name

962

new_function = (dbus.service.signal

963

(alt_interface,

964

attribute._dbus_signature)

965

(types.FunctionType(

966

nonmethod_func.func_code,

967

nonmethod_func.func_globals,

968

nonmethod_func.func_name,

969

nonmethod_func.func_defaults,

970

nonmethod_func.func_closure)))

1262

if sys.version_info.major == 2:

1263

new_function = types.FunctionType(

1264

nonmethod_func.func_code,

1265

nonmethod_func.func_globals,

1266

nonmethod_func.func_name,

1267

nonmethod_func.func_defaults,

1268

nonmethod_func.func_closure)

1269

else:

1270

new_function = types.FunctionType(

1271

nonmethod_func.__code__,

1272

nonmethod_func.__globals__,

1273

nonmethod_func.__name__,

1274

nonmethod_func.__defaults__,

1275

nonmethod_func.__closure__)

1276

new_function = (dbus.service.signal(

1277

alt_interface,

1278

attribute._dbus_signature)(new_function))

1279

# Copy annotations, if any

1280

try:

1281

new_function._dbus_annotations = dict(

1282

attribute._dbus_annotations)

1283

except AttributeError:

1284

pass

971

1285

# Define a creator of a function to call both the

972

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

973

# signals gets sent when the function is called

1286

# original and alternate functions, so both the

1287

# original and alternate signals gets sent when

1288

# the function is called

974

1289

def fixscope(func1, func2):

975

1290

"""This function is a scope container to pass

976

1291

func1 and func2 to the "call_both" function

977

1292

outside of its arguments"""

1293

978

1294

def call_both(*args, **kwargs):

979

1295

"""This function will emit two D-Bus

980

1296

signals by calling func1 and func2"""

981

1297

func1(*args, **kwargs)

982

1298

func2(*args, **kwargs)

1299

983

1300

return call_both

984

1301

# Create the "call_both" function and add it to

985

1302

# the class

986

attr[attrname] = fixscope(attribute,

987

new_function)

1303

attr[attrname] = fixscope(attribute, new_function)

988

1304

# Is this a D-Bus method?

989

1305

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

990

1306

# Create a new, but exactly alike, function

991

1307

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

992

1308

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

993

1309

# to the class.

994

attr[attrname] = (dbus.service.method

995

(alt_interface,

996

attribute._dbus_in_signature,

997

attribute._dbus_out_signature)

998

(types.FunctionType

999

(attribute.func_code,

1000

attribute.func_globals,

1001

attribute.func_name,

1002

attribute.func_defaults,

1003

attribute.func_closure)))

1310

attr[attrname] = (

1311

dbus.service.method(

1312

alt_interface,

1313

attribute._dbus_in_signature,

1314

attribute._dbus_out_signature)

1315

(types.FunctionType(attribute.func_code,

1316

attribute.func_globals,

1317

attribute.func_name,

1318

attribute.func_defaults,

1319

attribute.func_closure)))

1320

# Copy annotations, if any

1321

try:

1322

attr[attrname]._dbus_annotations = dict(

1323

attribute._dbus_annotations)

1324

except AttributeError:

1325

pass

1004

1326

# Is this a D-Bus property?

1005

1327

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

1006

1328

# Create a new, but exactly alike, function

1007

1329

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

1008

1330

# property with the alternate D-Bus interface

1009

1331

# name. Add it to the class.

1010

attr[attrname] = (dbus_service_property

1011

(alt_interface,

1012

attribute._dbus_signature,

1013

attribute._dbus_access,

1014

attribute

1015

._dbus_get_args_options

1016

["byte_arrays"])

1017

(types.FunctionType

1018

(attribute.func_code,

1019

attribute.func_globals,

1020

attribute.func_name,

1021

attribute.func_defaults,

1022

attribute.func_closure)))

1023

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

1024

1025

1332

attr[attrname] = (dbus_service_property(

1333

alt_interface, attribute._dbus_signature,

1334

attribute._dbus_access,

1335

attribute._dbus_get_args_options

1336

["byte_arrays"])

1337

(types.FunctionType(

1338

attribute.func_code,

1339

attribute.func_globals,

1340

attribute.func_name,

1341

attribute.func_defaults,

1342

attribute.func_closure)))

1343

# Copy annotations, if any

1344

try:

1345

attr[attrname]._dbus_annotations = dict(

1346

attribute._dbus_annotations)

1347

except AttributeError:

1348

pass

1349

# Is this a D-Bus interface?

1350

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

1351

# Create a new, but exactly alike, function

1352

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

1353

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

1354

# to the class.

1355

attr[attrname] = (

1356

dbus_interface_annotations(alt_interface)

1357

(types.FunctionType(attribute.func_code,

1358

attribute.func_globals,

1359

attribute.func_name,

1360

attribute.func_defaults,

1361

attribute.func_closure)))

1362

if deprecate:

1363

# Deprecate all alternate interfaces

1364

iname="_AlternateDBusNames_interface_annotation{}"

1365

for interface_name in interface_names:

1366

1367

@dbus_interface_annotations(interface_name)

1368

def func(self):

1369

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

1370

"true" }

1371

# Find an unused name

1372

for aname in (iname.format(i)

1373

for i in itertools.count()):

1374

if aname not in attr:

1375

attr[aname] = func

1376

break

1377

if interface_names:

1378

# Replace the class with a new subclass of it with

1379

# methods, signals, etc. as created above.

1380

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

1381

(cls, ), attr)

1382

return cls

1383

1384

return wrapper

1385

1386

1387

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

1388

"se.bsnet.fukt.Mandos"})

1026

1389

class ClientDBus(Client, DBusObjectWithProperties):

1027

1390

"""A Client class using D-Bus

1028

1391

1032

1395

"""

1033

1396

1034

1397

runtime_expansions = (Client.runtime_expansions

1035

+ ("dbus_object_path",))

1398

+ ("dbus_object_path", ))

1399

1400

_interface = "se.recompile.Mandos.Client"

1036

1401

1037

1402

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

1038

1403

1039

1404

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

1040

1405

self.bus = bus

1041

1406

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

1042

self._approvals_pending = 0

1043

1044

self._approvals_pending = 0

1045

1407

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

1046

1408

# the D-Bus

1047

client_object_name = unicode(self.name).translate(

1409

client_object_name = str(self.name).translate(

1048

1410

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

1049

1411

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

1050

self.dbus_object_path = (dbus.ObjectPath

1051

("/clients/" + client_object_name))

1412

self.dbus_object_path = dbus.ObjectPath(

1413

"/clients/" + client_object_name)

1052

1414

DBusObjectWithProperties.__init__(self, self.bus,

1053

1415

self.dbus_object_path)

1054

1055

def notifychangeproperty(transform_func,

1056

dbus_name, type_func=lambda x: x,

1057

variant_level=1):

1416

1417

def notifychangeproperty(transform_func, dbus_name,

1418

type_func=lambda x: x,

1419

variant_level=1,

1420

invalidate_only=False,

1421

_interface=_interface):

1058

1422

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

1059

1423

its changes to DBus.

1060

1424

1065

1429

to the D-Bus. Default: no transform

1066

1430

variant_level: D-Bus variant level. Default: 1

1067

1431

"""

1068

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

1432

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

1433

1069

1434

def setter(self, value):

1070

1435

if hasattr(self, "dbus_object_path"):

1071

1436

if (not hasattr(self, attrname) or

1072

1437

type_func(getattr(self, attrname, None))

1073

1438

!= type_func(value)):

1074

dbus_value = transform_func(type_func(value),

1075

variant_level

1076

=variant_level)

1077

self.PropertyChanged(dbus.String(dbus_name),

1078

dbus_value)

1439

if invalidate_only:

1440

self.PropertiesChanged(

1441

_interface, dbus.Dictionary(),

1442

dbus.Array((dbus_name, )))

1443

else:

1444

dbus_value = transform_func(

1445

type_func(value),

1446

variant_level = variant_level)

1447

self.PropertyChanged(dbus.String(dbus_name),

1448

dbus_value)

1449

self.PropertiesChanged(

1450

_interface,

1451

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

1452

dbus_value }),

1453

dbus.Array())

1079

1454

setattr(self, attrname, value)

1080

1455

1081

1456

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

1082

1457

1083

1084

1458

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1085

1459

approvals_pending = notifychangeproperty(dbus.Boolean,

1086

1460

"ApprovalPending",

1088

1462

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

1089

1463

last_enabled = notifychangeproperty(datetime_to_dbus,

1090

1464

"LastEnabled")

1091

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

1092

type_func = lambda checker:

1093

checker is not None)

1465

checker = notifychangeproperty(

1466

dbus.Boolean, "CheckerRunning",

1467

type_func = lambda checker: checker is not None)

1094

1468

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1095

1469

"LastCheckedOK")

1470

last_checker_status = notifychangeproperty(dbus.Int16,

1471

"LastCheckerStatus")

1096

1472

last_approval_request = notifychangeproperty(

1097

1473

datetime_to_dbus, "LastApprovalRequest")

1098

1474

approved_by_default = notifychangeproperty(dbus.Boolean,

1099

1475

"ApprovedByDefault")

1100

approval_delay = notifychangeproperty(dbus.UInt64,

1101

"ApprovalDelay",

1102

type_func =

1103

timedelta_to_milliseconds)

1476

approval_delay = notifychangeproperty(

1477

dbus.UInt64, "ApprovalDelay",

1478

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

1104

1479

approval_duration = notifychangeproperty(

1105

1480

dbus.UInt64, "ApprovalDuration",

1106

type_func = timedelta_to_milliseconds)

1481

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

1107

1482

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

1108

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

1109

type_func =

1110

timedelta_to_milliseconds)

1483

timeout = notifychangeproperty(

1484

dbus.UInt64, "Timeout",

1485

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

1111

1486

extended_timeout = notifychangeproperty(

1112

1487

dbus.UInt64, "ExtendedTimeout",

1113

type_func = timedelta_to_milliseconds)

1114

interval = notifychangeproperty(dbus.UInt64,

1115

"Interval",

1116

type_func =

1117

timedelta_to_milliseconds)

1488

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

1489

interval = notifychangeproperty(

1490

dbus.UInt64, "Interval",

1491

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

1118

1492

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

1493

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

1494

invalidate_only=True)

1119

1495

1120

1496

del notifychangeproperty

1121

1497

1128

1504

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

1129

1505

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

1130

1506

1131

def checker_callback(self, pid, condition, command,

1132

*args, **kwargs):

1133

self.checker_callback_tag = None

1134

self.checker = None

1135

if os.WIFEXITED(condition):

1136

exitstatus = os.WEXITSTATUS(condition)

1507

def checker_callback(self, source, condition,

1508

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

1509

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

1510

connection, command, *args,

1511

**kwargs)

1512

exitstatus = self.last_checker_status

1513

if exitstatus >= 0:

1137

1514

# Emit D-Bus signal

1138

1515

self.CheckerCompleted(dbus.Int16(exitstatus),

1139

dbus.Int64(condition),

1516

# This is specific to GNU libC

1517

dbus.Int64(exitstatus << 8),

1140

1518

dbus.String(command))

1141

1519

else:

1142

1520

# Emit D-Bus signal

1143

1521

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

1144

dbus.Int64(condition),

1522

dbus.Int64(

1523

# This is specific to GNU libC

1524

(exitstatus << 8)

1525

| self.last_checker_signal),

1145

1526

dbus.String(command))

1146

1147

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

1148

*args, **kwargs)

1527

return ret

1149

1528

1150

1529

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

1151

old_checker = self.checker

1152

if self.checker is not None:

1153

old_checker_pid = self.checker.pid

1154

else:

1155

old_checker_pid = None

1530

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

1156

1531

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

1157

1532

# Only if new checker process was started

1158

1533

if (self.checker is not None

1166

1541

return False

1167

1542

1168

1543

def approve(self, value=True):

1169

self.send_changedstate()

1170

1544

self.approved = value

1171

gobject.timeout_add(timedelta_to_milliseconds

1172

(self.approval_duration),

1173

self._reset_approved)

1174

1545

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

1546

* 1000), self._reset_approved)

1547

self.send_changedstate()

1175

1548

1176

1549

## D-Bus methods, signals & properties

1177

_interface = "se.recompile.Mandos.Client"

1550

1551

## Interfaces

1178

1552

1179

1553

## Signals

1180

1554

1191

1565

pass

1192

1566

1193

1567

# PropertyChanged - signal

1568

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

1194

1569

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

1195

1570

def PropertyChanged(self, property, value):

1196

1571

"D-Bus signal"

1217

1592

"D-Bus signal"

1218

1593

return self.need_approval()

1219

1594

1220

# NeRwequest - signal

1221

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

1222

def NewRequest(self, ip):

1223

"""D-Bus signal

1224

Is sent after a client request a password.

1225

"""

1226

pass

1227

1228

1595

## Methods

1229

1596

1230

1597

# Approve - method

1238

1605

self.checked_ok()

1239

1606

1240

1607

# Enable - method

1608

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

1241

1609

@dbus.service.method(_interface)

1242

1610

def Enable(self):

1243

1611

"D-Bus method"

1244

1612

self.enable()

1245

1613

1246

1614

# StartChecker - method

1615

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

1247

1616

@dbus.service.method(_interface)

1248

1617

def StartChecker(self):

1249

1618

"D-Bus method"

1250

1619

self.start_checker()

1251

1620

1252

1621

# Disable - method

1622

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

1253

1623

@dbus.service.method(_interface)

1254

1624

def Disable(self):

1255

1625

"D-Bus method"

1256

1626

self.disable()

1257

1627

1258

1628

# StopChecker - method

1629

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

1259

1630

@dbus.service.method(_interface)

1260

1631

def StopChecker(self):

1261

1632

self.stop_checker()

1268

1639

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

1269

1640

1270

1641

# ApprovedByDefault - property

1271

@dbus_service_property(_interface, signature="b",

1642

@dbus_service_property(_interface,

1643

signature="b",

1272

1644

access="readwrite")

1273

1645

def ApprovedByDefault_dbus_property(self, value=None):

1274

1646

if value is None: # get

1276

1648

self.approved_by_default = bool(value)

1277

1649

1278

1650

# ApprovalDelay - property

1279

@dbus_service_property(_interface, signature="t",

1651

@dbus_service_property(_interface,

1652

signature="t",

1280

1653

access="readwrite")

1281

1654

def ApprovalDelay_dbus_property(self, value=None):

1282

1655

if value is None: # get

1283

return dbus.UInt64(self.approval_delay_milliseconds())

1656

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

1657

* 1000)

1284

1658

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

1285

1659

1286

1660

# ApprovalDuration - property

1287

@dbus_service_property(_interface, signature="t",

1661

@dbus_service_property(_interface,

1662

signature="t",

1288

1663

access="readwrite")

1289

1664

def ApprovalDuration_dbus_property(self, value=None):

1290

1665

if value is None: # get

1291

return dbus.UInt64(timedelta_to_milliseconds(

1292

self.approval_duration))

1666

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

1667

* 1000)

1293

1668

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

1294

1669

1295

1670

# Name - property

1671

@dbus_annotations(

1672

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

1296

1673

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

1297

1674

def Name_dbus_property(self):

1298

1675

return dbus.String(self.name)

1299

1676

1300

1677

# Fingerprint - property

1678

@dbus_annotations(

1679

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

1301

1680

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

1302

1681

def Fingerprint_dbus_property(self):

1303

1682

return dbus.String(self.fingerprint)

1304

1683

1305

1684

# Host - property

1306

@dbus_service_property(_interface, signature="s",

1685

@dbus_service_property(_interface,

1686

signature="s",

1307

1687

access="readwrite")

1308

1688

def Host_dbus_property(self, value=None):

1309

1689

if value is None: # get

1310

1690

return dbus.String(self.host)

1311

self.host = unicode(value)

1691

self.host = str(value)

1312

1692

1313

1693

# Created - property

1694

@dbus_annotations(

1695

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

1314

1696

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

1315

1697

def Created_dbus_property(self):

1316

1698

return datetime_to_dbus(self.created)

1321

1703

return datetime_to_dbus(self.last_enabled)

1322

1704

1323

1705

# Enabled - property

1324

@dbus_service_property(_interface, signature="b",

1706

@dbus_service_property(_interface,

1707

signature="b",

1325

1708

access="readwrite")

1326

1709

def Enabled_dbus_property(self, value=None):

1327

1710

if value is None: # get

1332

1715

self.disable()

1333

1716

1334

1717

# LastCheckedOK - property

1335

@dbus_service_property(_interface, signature="s",

1718

@dbus_service_property(_interface,

1719

signature="s",

1336

1720

access="readwrite")

1337

1721

def LastCheckedOK_dbus_property(self, value=None):

1338

1722

if value is not None:

1340

1724

return

1341

1725

return datetime_to_dbus(self.last_checked_ok)

1342

1726

1727

# LastCheckerStatus - property

1728

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

1729

def LastCheckerStatus_dbus_property(self):

1730

return dbus.Int16(self.last_checker_status)

1731

1343

1732

# Expires - property

1344

1733

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

1345

1734

def Expires_dbus_property(self):

1351

1740

return datetime_to_dbus(self.last_approval_request)

1352

1741

1353

1742

# Timeout - property

1354

@dbus_service_property(_interface, signature="t",

1743

@dbus_service_property(_interface,

1744

signature="t",

1355

1745

access="readwrite")

1356

1746

def Timeout_dbus_property(self, value=None):

1357

1747

if value is None: # get

1358

return dbus.UInt64(self.timeout_milliseconds())

1748

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

1749

old_timeout = self.timeout

1359

1750

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

1360

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

1361

return

1362

# Reschedule timeout

1363

gobject.source_remove(self.disable_initiator_tag)

1364

self.disable_initiator_tag = None

1365

self.expires = None

1366

time_to_die = timedelta_to_milliseconds((self

1367

.last_checked_ok

1368

+ self.timeout)

1369

- datetime.datetime

1370

.utcnow())

1371

if time_to_die <= 0:

1372

# The timeout has passed

1373

self.disable()

1374

else:

1375

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

1376

+ datetime.timedelta(milliseconds =

1377

time_to_die))

1378

self.disable_initiator_tag = (gobject.timeout_add

1379

(time_to_die, self.disable))

1751

# Reschedule disabling

1752

if self.enabled:

1753

now = datetime.datetime.utcnow()

1754

self.expires += self.timeout - old_timeout

1755

if self.expires <= now:

1756

# The timeout has passed

1757

self.disable()

1758

else:

1759

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

1760

is None):

1761

return

1762

gobject.source_remove(self.disable_initiator_tag)

1763

self.disable_initiator_tag = gobject.timeout_add(

1764

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

1765

self.disable)

1380

1766

1381

1767

# ExtendedTimeout - property

1382

@dbus_service_property(_interface, signature="t",

1768

@dbus_service_property(_interface,

1769

signature="t",

1383

1770

access="readwrite")

1384

1771

def ExtendedTimeout_dbus_property(self, value=None):

1385

1772

if value is None: # get

1386

return dbus.UInt64(self.extended_timeout_milliseconds())

1773

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

1774

* 1000)

1387

1775

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

1388

1776

1389

1777

# Interval - property

1390

@dbus_service_property(_interface, signature="t",

1778

@dbus_service_property(_interface,

1779

signature="t",

1391

1780

access="readwrite")

1392

1781

def Interval_dbus_property(self, value=None):

1393

1782

if value is None: # get

1394

return dbus.UInt64(self.interval_milliseconds())

1783

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

1395

1784

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

1396

1785

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

1397

1786

return

1398

1787

if self.enabled:

1399

1788

# Reschedule checker run

1400

1789

gobject.source_remove(self.checker_initiator_tag)

1401

self.checker_initiator_tag = (gobject.timeout_add

1402

(value, self.start_checker))

1403

self.start_checker() # Start one now, too

1790

self.checker_initiator_tag = gobject.timeout_add(

1791

value, self.start_checker)

1792

self.start_checker() # Start one now, too

1404

1793

1405

1794

# Checker - property

1406

@dbus_service_property(_interface, signature="s",

1795

@dbus_service_property(_interface,

1796

signature="s",

1407

1797

access="readwrite")

1408

1798

def Checker_dbus_property(self, value=None):

1409

1799

if value is None: # get

1410

1800

return dbus.String(self.checker_command)

1411

self.checker_command = unicode(value)

1801

self.checker_command = str(value)

1412

1802

1413

1803

# CheckerRunning - property

1414

@dbus_service_property(_interface, signature="b",

1804

@dbus_service_property(_interface,

1805

signature="b",

1415

1806

access="readwrite")

1416

1807

def CheckerRunning_dbus_property(self, value=None):

1417

1808

if value is None: # get

1422

1813

self.stop_checker()

1423

1814

1424

1815

# ObjectPath - property

1816

@dbus_annotations(

1817

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

1818

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

1425

1819

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

1426

1820

def ObjectPath_dbus_property(self):

1427

1821

return self.dbus_object_path # is already a dbus.ObjectPath

1428

1822

1429

1823

# Secret = property

1430

@dbus_service_property(_interface, signature="ay",

1431

access="write", byte_arrays=True)

1824

@dbus_annotations(

1825

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

1826

"invalidates"})

1827

@dbus_service_property(_interface,

1828

signature="ay",

1829

access="write",

1830

byte_arrays=True)

1432

1831

def Secret_dbus_property(self, value):

1433

self.secret = str(value)

1832

self.secret = bytes(value)

1434

1833

1435

1834

del _interface

1436

1835

1440

1839

self._pipe = child_pipe

1441

1840

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

1442

1841

if not self._pipe.recv():

1443

raise KeyError()

1842

raise KeyError(fpr)

1444

1843

1445

1844

def __getattribute__(self, name):

1446

1845

if name == '_pipe':

1450

1849

if data[0] == 'data':

1451

1850

return data[1]

1452

1851

if data[0] == 'function':

1852

1453

1853

def func(*args, **kwargs):

1454

1854

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

1455

1855

return self._pipe.recv()[1]

1856

1456

1857

return func

1457

1858

1458

1859

def __setattr__(self, name, value):

1461

1862

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

1462

1863

1463

1864

1464

class ClientDBusTransitional(ClientDBus):

1465

__metaclass__ = AlternateDBusNamesMetaclass

1466

1467

1468

1865

class ClientHandler(socketserver.BaseRequestHandler, object):

1469

1866

"""A class to handle client connections.

1470

1867

1474

1871

def handle(self):

1475

1872

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

1476

1873

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

1477

unicode(self.client_address))

1874

str(self.client_address))

1478

1875

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

1479

1876

self.server.child_pipe.fileno())

1480

1877

1481

session = (gnutls.connection

1482

.ClientSession(self.request,

1483

gnutls.connection

1484

.X509Credentials()))

1878

session = gnutls.connection.ClientSession(

1879

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

1485

1880

1486

1881

# Note: gnutls.connection.X509Credentials is really a

1487

1882

# generic GnuTLS certificate credentials object so long as

1496

1891

priority = self.server.gnutls_priority

1497

1892

if priority is None:

1498

1893

priority = "NORMAL"

1499

(gnutls.library.functions

1500

.gnutls_priority_set_direct(session._c_object,

1501

priority, None))

1894

gnutls.library.functions.gnutls_priority_set_direct(

1895

session._c_object, priority, None)

1502

1896

1503

1897

# Start communication using the Mandos protocol

1504

1898

# Get protocol number

1506

1900

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

1507

1901

try:

1508

1902

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

1509

raise RuntimeError

1903

raise RuntimeError(line)

1510

1904

except (ValueError, IndexError, RuntimeError) as error:

1511

1905

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

1512

1906

return

1524

1918

approval_required = False

1525

1919

try:

1526

1920

try:

1527

fpr = self.fingerprint(self.peer_certificate

1528

(session))

1921

fpr = self.fingerprint(

1922

self.peer_certificate(session))

1529

1923

except (TypeError,

1530

1924

gnutls.errors.GNUTLSError) as error:

1531

1925

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

1538

1932

except KeyError:

1539

1933

return

1540

1934

1541

if self.server.use_dbus:

1542

# Emit D-Bus signal

1543

client.NewRequest(str(self.client_address))

1544

1545

1935

if client.approval_delay:

1546

1936

delay = client.approval_delay

1547

1937

client.approvals_pending += 1

1550

1940

while True:

1551

1941

if not client.enabled:

1552

1942

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

1553

client.name)

1943

client.name)

1554

1944

if self.server.use_dbus:

1555

1945

# Emit D-Bus signal

1556

1946

client.Rejected("Disabled")

1565

1955

if self.server.use_dbus:

1566

1956

# Emit D-Bus signal

1567

1957

client.NeedApproval(

1568

client.approval_delay_milliseconds(),

1569

client.approved_by_default)

1958

client.approval_delay.total_seconds()

1959

* 1000, client.approved_by_default)

1570

1960

else:

1571

1961

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

1572

1962

client.name)

1578

1968

#wait until timeout or approved

1579

1969

time = datetime.datetime.now()

1580

1970

client.changedstate.acquire()

1581

(client.changedstate.wait

1582

(float(client.timedelta_to_milliseconds(delay)

1583

/ 1000)))

1971

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

1584

1972

client.changedstate.release()

1585

1973

time2 = datetime.datetime.now()

1586

1974

if (time2 - time) >= delay:

1602

1990

try:

1603

1991

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

1604

1992

except gnutls.errors.GNUTLSError as error:

1605

logger.warning("gnutls send failed")

1993

logger.warning("gnutls send failed",

1994

exc_info=error)

1606

1995

return

1607

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

1608

sent, len(client.secret)

1609

- (sent_size + sent))

1996

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

1997

len(client.secret) - (sent_size

1998

+ sent))

1610

1999

sent_size += sent

1611

2000

1612

2001

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

1613

2002

# bump the timeout using extended_timeout

1614

client.checked_ok(client.extended_timeout)

2003

client.bump_timeout(client.extended_timeout)

1615

2004

if self.server.use_dbus:

1616

2005

# Emit D-Bus signal

1617

2006

client.GotSecret()

1622

2011

try:

1623

2012

session.bye()

1624

2013

except gnutls.errors.GNUTLSError as error:

1625

logger.warning("GnuTLS bye failed")

2014

logger.warning("GnuTLS bye failed",

2015

exc_info=error)

1626

2016

1627

2017

@staticmethod

1628

2018

def peer_certificate(session):

1629

2019

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

1630

2020

# If not an OpenPGP certificate...

1631

if (gnutls.library.functions

1632

.gnutls_certificate_type_get(session._c_object)

2021

if (gnutls.library.functions.gnutls_certificate_type_get(

2022

session._c_object)

1633

2023

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1634

2024

# ...do the normal thing

1635

2025

return session.peer_certificate

1649

2039

def fingerprint(openpgp):

1650

2040

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1651

2041

# New GnuTLS "datum" with the OpenPGP public key

1652

datum = (gnutls.library.types

1653

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

1654

ctypes.POINTER

1655

(ctypes.c_ubyte)),

1656

ctypes.c_uint(len(openpgp))))

2042

datum = gnutls.library.types.gnutls_datum_t(

2043

ctypes.cast(ctypes.c_char_p(openpgp),

2044

ctypes.POINTER(ctypes.c_ubyte)),

2045

ctypes.c_uint(len(openpgp)))

1657

2046

# New empty GnuTLS certificate

1658

2047

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1659

(gnutls.library.functions

1660

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

2048

gnutls.library.functions.gnutls_openpgp_crt_init(

2049

ctypes.byref(crt))

1661

2050

# Import the OpenPGP public key into the certificate

1662

(gnutls.library.functions

1663

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

1664

gnutls.library.constants

1665

.GNUTLS_OPENPGP_FMT_RAW))

2051

gnutls.library.functions.gnutls_openpgp_crt_import(

2052

crt, ctypes.byref(datum),

2053

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1666

2054

# Verify the self signature in the key

1667

2055

crtverify = ctypes.c_uint()

1668

(gnutls.library.functions

1669

.gnutls_openpgp_crt_verify_self(crt, 0,

1670

ctypes.byref(crtverify)))

2056

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

2057

crt, 0, ctypes.byref(crtverify))

1671

2058

if crtverify.value != 0:

1672

2059

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1673

raise (gnutls.errors.CertificateSecurityError

1674

("Verify failed"))

2060

raise gnutls.errors.CertificateSecurityError(

2061

"Verify failed")

1675

2062

# New buffer for the fingerprint

1676

2063

buf = ctypes.create_string_buffer(20)

1677

2064

buf_len = ctypes.c_size_t()

1678

2065

# Get the fingerprint from the certificate into the buffer

1679

(gnutls.library.functions

1680

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

1681

ctypes.byref(buf_len)))

2066

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

2067

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

1682

2068

# Deinit the certificate

1683

2069

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1684

2070

# Convert the buffer to a Python bytestring

1690

2076

1691

2077

class MultiprocessingMixIn(object):

1692

2078

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

2079

1693

2080

def sub_process_main(self, request, address):

1694

2081

try:

1695

2082

self.finish_request(request, address)

1700

2087

def process_request(self, request, address):

1701

2088

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

1702

2089

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

1703

args = (request,

1704

address))

2090

args = (request, address))

1705

2091

proc.start()

1706

2092

return proc

1707

2093

1708

2094

1709

2095

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1710

2096

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

2097

1711

2098

def process_request(self, request, client_address):

1712

2099

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

1713

2100

1722

2109

1723

2110

def add_pipe(self, parent_pipe, proc):

1724

2111

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

1725

raise NotImplementedError

2112

raise NotImplementedError()

1726

2113

1727

2114

1728

2115

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1734

2121

interface: None or a network interface name (string)

1735

2122

use_ipv6: Boolean; to use IPv6 or not

1736

2123

"""

2124

1737

2125

def __init__(self, server_address, RequestHandlerClass,

1738

interface=None, use_ipv6=True):

2126

interface=None,

2127

use_ipv6=True,

2128

socketfd=None):

2129

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

2130

creating a new one with socket.socket().

2131

"""

1739

2132

self.interface = interface

1740

2133

if use_ipv6:

1741

2134

self.address_family = socket.AF_INET6

2135

if socketfd is not None:

2136

# Save the file descriptor

2137

self.socketfd = socketfd

2138

# Save the original socket.socket() function

2139

self.socket_socket = socket.socket

2140

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

2141

#

2142

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

2143

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

2144

# patching socket.socket.)

2145

#

2146

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

2147

@functools.wraps(socket.socket)

2148

def socket_wrapper(*args, **kwargs):

2149

# Restore original function so subsequent calls are

2150

# not affected.

2151

socket.socket = self.socket_socket

2152

del self.socket_socket

2153

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

2154

# saved file descriptor.

2155

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

2156

# Replace socket.socket() function with wrapper

2157

socket.socket = socket_wrapper

2158

# The socketserver.TCPServer.__init__ will call

2159

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

2160

# socket_wrapper(), if socketfd was set.

1742

2161

socketserver.TCPServer.__init__(self, server_address,

1743

2162

RequestHandlerClass)

2163

1744

2164

def server_bind(self):

1745

2165

"""This overrides the normal server_bind() function

1746

2166

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

1752

2172

self.interface)

1753

2173

else:

1754

2174

try:

1755

self.socket.setsockopt(socket.SOL_SOCKET,

1756

SO_BINDTODEVICE,

1757

str(self.interface

1758

+ '\0'))

2175

self.socket.setsockopt(

2176

socket.SOL_SOCKET, SO_BINDTODEVICE,

2177

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

1759

2178

except socket.error as error:

1760

if error[0] == errno.EPERM:

1761

logger.error("No permission to"

1762

" bind to interface %s",

1763

self.interface)

1764

elif error[0] == errno.ENOPROTOOPT:

2179

if error.errno == errno.EPERM:

2180

logger.error("No permission to bind to"

2181

" interface %s", self.interface)

2182

elif error.errno == errno.ENOPROTOOPT:

1765

2183

logger.error("SO_BINDTODEVICE not available;"

1766

2184

" cannot bind to interface %s",

1767

2185

self.interface)

2186

elif error.errno == errno.ENODEV:

2187

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

2188

" cannot bind", self.interface)

1768

2189

else:

1769

2190

raise

1770

2191

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

1773

2194

if self.address_family == socket.AF_INET6:

1774

2195

any_address = "::" # in6addr_any

1775

2196

else:

1776

any_address = socket.INADDR_ANY

2197

any_address = "0.0.0.0" # INADDR_ANY

1777

2198

self.server_address = (any_address,

1778

2199

self.server_address[1])

1779

2200

elif not self.server_address[1]:

1780

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

1781

0)

2201

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

1782

2202

# if self.interface:

1783

2203

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

1784

2204

# 0, # port

1798

2218

1799

2219

Assumes a gobject.MainLoop event loop.

1800

2220

"""

2221

1801

2222

def __init__(self, server_address, RequestHandlerClass,

1802

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

1803

gnutls_priority=None, use_dbus=True):

2223

interface=None,

2224

use_ipv6=True,

2225

clients=None,

2226

gnutls_priority=None,

2227

use_dbus=True,

2228

socketfd=None):

1804

2229

self.enabled = False

1805

2230

self.clients = clients

1806

2231

if self.clients is None:

1810

2235

IPv6_TCPServer.__init__(self, server_address,

1811

2236

RequestHandlerClass,

1812

2237

interface = interface,

1813

use_ipv6 = use_ipv6)

2238

use_ipv6 = use_ipv6,

2239

socketfd = socketfd)

2240

1814

2241

def server_activate(self):

1815

2242

if self.enabled:

1816

2243

return socketserver.TCPServer.server_activate(self)

1820

2247

1821

2248

def add_pipe(self, parent_pipe, proc):

1822

2249

# Call "handle_ipc" for both data and EOF events

1823

gobject.io_add_watch(parent_pipe.fileno(),

1824

gobject.IO_IN | gobject.IO_HUP,

1825

functools.partial(self.handle_ipc,

1826

parent_pipe =

1827

parent_pipe,

1828

proc = proc))

2250

gobject.io_add_watch(

2251

parent_pipe.fileno(),

2252

gobject.IO_IN | gobject.IO_HUP,

2253

functools.partial(self.handle_ipc,

2254

parent_pipe = parent_pipe,

2255

proc = proc))

1829

2256

1830

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

1831

proc = None, client_object=None):

1832

condition_names = {

1833

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

1834

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

1835

# blocking).

1836

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

1837

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

1838

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

1839

# broken, usually for pipes and

1840

# sockets).

1841

}

1842

conditions_string = ' | '.join(name

1843

for cond, name in

1844

condition_names.iteritems()

1845

if cond & condition)

2257

def handle_ipc(self, source, condition,

2258

parent_pipe=None,

2259

proc = None,

2260

client_object=None):

1846

2261

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

1847

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

2262

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

1848

2263

# Wait for other process to exit

1849

2264

proc.join()

1850

2265

return False

1871

2286

parent_pipe.send(False)

1872

2287

return False

1873

2288

1874

gobject.io_add_watch(parent_pipe.fileno(),

1875

gobject.IO_IN | gobject.IO_HUP,

1876

functools.partial(self.handle_ipc,

1877

parent_pipe =

1878

parent_pipe,

1879

proc = proc,

1880

client_object =

1881

client))

2289

gobject.io_add_watch(

2290

parent_pipe.fileno(),

2291

gobject.IO_IN | gobject.IO_HUP,

2292

functools.partial(self.handle_ipc,

2293

parent_pipe = parent_pipe,

2294

proc = proc,

2295

client_object = client))

1882

2296

parent_pipe.send(True)

1883

2297

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

1884

2298

# same fileno

1890

2304

1891

2305

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

1892

2306

funcname)(*args,

1893

**kwargs)))

2307

**kwargs)))

1894

2308

1895

2309

if command == 'getattr':

1896

2310

attrname = request[1]

1897

if callable(client_object.__getattribute__(attrname)):

1898

parent_pipe.send(('function',))

2311

if isinstance(client_object.__getattribute__(attrname),

2312

collections.Callable):

2313

parent_pipe.send(('function', ))

1899

2314

else:

1900

parent_pipe.send(('data', client_object

1901

.__getattribute__(attrname)))

2315

parent_pipe.send((

2316

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

1902

2317

1903

2318

if command == 'setattr':

1904

2319

attrname = request[1]

1908

2323

return True

1909

2324

1910

2325

2326

def rfc3339_duration_to_delta(duration):

2327

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

2328

2329

>>> rfc3339_duration_to_delta("P7D")

2330

datetime.timedelta(7)

2331

>>> rfc3339_duration_to_delta("PT60S")

2332

datetime.timedelta(0, 60)

2333

>>> rfc3339_duration_to_delta("PT60M")

2334

datetime.timedelta(0, 3600)

2335

>>> rfc3339_duration_to_delta("PT24H")

2336

datetime.timedelta(1)

2337

>>> rfc3339_duration_to_delta("P1W")

2338

datetime.timedelta(7)

2339

>>> rfc3339_duration_to_delta("PT5M30S")

2340

datetime.timedelta(0, 330)

2341

>>> rfc3339_duration_to_delta("P1DT3M20S")

2342

datetime.timedelta(1, 200)

2343

"""

2344

2345

# Parsing an RFC 3339 duration with regular expressions is not

2346

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

2347

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

2348

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

2349

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

2350

# avoid excessive use of external libraries.

2351

2352

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

2353

Token = collections.namedtuple("Token", (

2354

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

2355

# a "group" containing digits

2356

"value", # datetime.timedelta or None

2357

"followers")) # Tokens valid after this token

2358

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

2359

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

2360

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

2361

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

2362

datetime.timedelta(seconds=1),

2363

frozenset((token_end, )))

2364

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

2365

datetime.timedelta(minutes=1),

2366

frozenset((token_second, token_end)))

2367

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

2368

datetime.timedelta(hours=1),

2369

frozenset((token_minute, token_end)))

2370

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

2371

None,

2372

frozenset((token_hour, token_minute,

2373

token_second)))

2374

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

2375

datetime.timedelta(days=1),

2376

frozenset((token_time, token_end)))

2377

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

2378

datetime.timedelta(weeks=4),

2379

frozenset((token_day, token_end)))

2380

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

2381

datetime.timedelta(weeks=52),

2382

frozenset((token_month, token_end)))

2383

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

2384

datetime.timedelta(weeks=1),

2385

frozenset((token_end, )))

2386

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

2387

frozenset((token_year, token_month,

2388

token_day, token_time,

2389

token_week)))

2390

# Define starting values

2391

value = datetime.timedelta() # Value so far

2392

found_token = None

2393

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

2394

s = duration # String left to parse

2395

# Loop until end token is found

2396

while found_token is not token_end:

2397

# Search for any currently valid tokens

2398

for token in followers:

2399

match = token.regexp.match(s)

2400

if match is not None:

2401

# Token found

2402

if token.value is not None:

2403

# Value found, parse digits

2404

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

2405

# Add to value so far

2406

value += factor * token.value

2407

# Strip token from string

2408

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

2409

# Go to found token

2410

found_token = token

2411

# Set valid next tokens

2412

followers = found_token.followers

2413

break

2414

else:

2415

# No currently valid tokens were found

2416

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

2417

.format(duration))

2418

# End token found

2419

return value

2420

2421

1911

2422

def string_to_delta(interval):

1912

2423

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

1913

2424

1924

2435

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

1925

2436

datetime.timedelta(0, 330)

1926

2437

"""

2438

2439

try:

2440

return rfc3339_duration_to_delta(interval)

2441

except ValueError:

2442

pass

2443

1927

2444

timevalue = datetime.timedelta(0)

1928

2445

for s in interval.split():

1929

2446

try:

1930

suffix = unicode(s[-1])

2447

suffix = s[-1]

1931

2448

value = int(s[:-1])

1932

2449

if suffix == "d":

1933

2450

delta = datetime.timedelta(value)

1940

2457

elif suffix == "w":

1941

2458

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

1942

2459

else:

1943

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

1944

except (ValueError, IndexError) as e:

2460

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

2461

except IndexError as e:

1945

2462

raise ValueError(*(e.args))

1946

2463

timevalue += delta

1947

2464

return timevalue

1960

2477

sys.exit()

1961

2478

if not noclose:

1962

2479

# Close all standard open file descriptors

1963

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

2480

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

1964

2481

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

1965

2482

raise OSError(errno.ENODEV,

1966

"%s not a character device"

1967

% os.path.devnull)

2483

"{} not a character device"

2484

.format(os.devnull))

1968

2485

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

1969

2486

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

1970

2487

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

1979

2496

1980

2497

parser = argparse.ArgumentParser()

1981

2498

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

1982

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

2499

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

1983

2500

help="show version number and exit")

1984

2501

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

1985

2502

help="Bind to interface IF")

1991

2508

help="Run self-test")

1992

2509

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

1993

2510

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

1994

" to terminal")

2511

" to terminal", default=None)

1995

2512

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

1996

2513

help="Debug level for stdout output")

1997

2514

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

2004

2521

" files")

2005

2522

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

2006

2523

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

2007

" system bus interface")

2524

" system bus interface", default=None)

2008

2525

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

2009

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

2526

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

2527

default=None)

2010

2528

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

2011

2529

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

2012

" state")

2530

" state", default=None)

2531

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

2532

help="Specify a file descriptor to a network"

2533

" socket to use instead of creating one")

2013

2534

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

2014

2535

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

2536

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

2537

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

2538

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

2539

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

2540

default=None)

2015

2541

2016

2542

options = parser.parse_args()

2017

2543

2018

2544

if options.check:

2019

2545

import doctest

2020

doctest.testmod()

2021

sys.exit()

2546

fail_count, test_count = doctest.testmod()

2547

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

2022

2548

2023

2549

# Default values for config file for server-global settings

2024

2550

server_defaults = { "interface": "",

2026

2552

"port": "",

2027

2553

"debug": "False",

2028

2554

"priority":

2029

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

2555

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

2556

":+SIGN-DSA-SHA256",

2030

2557

"servicename": "Mandos",

2031

2558

"use_dbus": "True",

2032

2559

"use_ipv6": "True",

2033

2560

"debuglevel": "",

2034

2561

"restore": "True",

2035

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

2036

}

2562

"socket": "",

2563

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

2564

"foreground": "False",

2565

"zeroconf": "True",

2566

}

2037

2567

2038

2568

# Parse config file for server-global settings

2039

2569

server_config = configparser.SafeConfigParser(server_defaults)

2040

2570

del server_defaults

2041

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

2042

"mandos.conf"))

2571

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

2043

2572

# Convert the SafeConfigParser object to a dict

2044

2573

server_settings = server_config.defaults()

2045

2574

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

2046

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

2575

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

2047

2576

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

2048

2577

option)

2049

2578

if server_settings["port"]:

2050

2579

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

2051

2580

"port")

2581

if server_settings["socket"]:

2582

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

2583

"socket")

2584

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

2585

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

2586

# happen with a supplied network socket.

2587

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

2588

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

2589

["socket"])

2052

2590

del server_config

2053

2591

2054

2592

# Override the settings from the config file with command line

2055

2593

# options, if set.

2056

2594

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

2057

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

2058

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

2059

"statedir"):

2595

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

2596

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

2597

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

2060

2598

value = getattr(options, option)

2061

2599

if value is not None:

2062

2600

server_settings[option] = value

2063

2601

del options

2064

2602

# Force all strings to be unicode

2065

2603

for option in server_settings.keys():

2066

if type(server_settings[option]) is str:

2067

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

2604

if isinstance(server_settings[option], bytes):

2605

server_settings[option] = (server_settings[option]

2606

.decode("utf-8"))

2607

# Force all boolean options to be boolean

2608

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

2609

"foreground", "zeroconf"):

2610

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

2611

# Debug implies foreground

2612

if server_settings["debug"]:

2613

server_settings["foreground"] = True

2068

2614

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

2069

2615

2070

2616

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

2071

2617

2618

if (not server_settings["zeroconf"]

2619

and not (server_settings["port"]

2620

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

2621

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

2622

2072

2623

# For convenience

2073

2624

debug = server_settings["debug"]

2074

2625

debuglevel = server_settings["debuglevel"]

2076

2627

use_ipv6 = server_settings["use_ipv6"]

2077

2628

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

2078

2629

stored_state_file)

2630

foreground = server_settings["foreground"]

2631

zeroconf = server_settings["zeroconf"]

2079

2632

2080

2633

if debug:

2081

initlogger(logging.DEBUG)

2634

initlogger(debug, logging.DEBUG)

2082

2635

else:

2083

2636

if not debuglevel:

2084

initlogger()

2637

initlogger(debug)

2085

2638

else:

2086

2639

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

2087

initlogger(level)

2640

initlogger(debug, level)

2088

2641

2089

2642

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

2090

syslogger.setFormatter(logging.Formatter

2091

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

2092

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

2093

% server_settings["servicename"]))

2643

syslogger.setFormatter(

2644

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

2645

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

2646

server_settings["servicename"])))

2094

2647

2095

2648

# Parse config file with clients

2096

client_config = configparser.SafeConfigParser(Client.client_defaults)

2649

client_config = configparser.SafeConfigParser(Client

2650

.client_defaults)

2097

2651

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

2098

2652

"clients.conf"))

2099

2653

2100

2654

global mandos_dbus_service

2101

2655

mandos_dbus_service = None

2102

2656

2103

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

2104

server_settings["port"]),

2105

ClientHandler,

2106

interface=(server_settings["interface"]

2107

or None),

2108

use_ipv6=use_ipv6,

2109

gnutls_priority=

2110

server_settings["priority"],

2111

use_dbus=use_dbus)

2112

if not debug:

2113

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

2657

socketfd = None

2658

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

2659

socketfd = server_settings["socket"]

2660

tcp_server = MandosServer(

2661

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

2662

ClientHandler,

2663

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

2664

use_ipv6=use_ipv6,

2665

gnutls_priority=server_settings["priority"],

2666

use_dbus=use_dbus,

2667

socketfd=socketfd)

2668

if not foreground:

2669

pidfilename = "/run/mandos.pid"

2670

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

2671

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

2672

pidfile = None

2114

2673

try:

2115

pidfile = open(pidfilename, "w")

2116

except IOError:

2117

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

2674

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

2675

except IOError as e:

2676

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

2677

exc_info=e)

2118

2678

2119

try:

2120

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

2121

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

2122

except KeyError:

2679

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

2123

2680

try:

2124

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

2125

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

2681

uid = pwd.getpwnam(name).pw_uid

2682

gid = pwd.getpwnam(name).pw_gid

2683

break

2126

2684

except KeyError:

2127

try:

2128

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

2129

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

2130

except KeyError:

2131

uid = 65534

2132

gid = 65534

2685

continue

2686

else:

2687

uid = 65534

2688

gid = 65534

2133

2689

try:

2134

2690

os.setgid(gid)

2135

2691

os.setuid(uid)

2136

2692

except OSError as error:

2137

if error[0] != errno.EPERM:

2138

raise error

2693

if error.errno != errno.EPERM:

2694

raise

2139

2695

2140

2696

if debug:

2141

2697

# Enable all possible GnuTLS debugging

2148

2704

def debug_gnutls(level, string):

2149

2705

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

2150

2706

2151

(gnutls.library.functions

2152

.gnutls_global_set_log_function(debug_gnutls))

2707

gnutls.library.functions.gnutls_global_set_log_function(

2708

debug_gnutls)

2153

2709

2154

2710

# Redirect stdin so all checkers get /dev/null

2155

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

2711

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

2156

2712

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

2157

2713

if null > 2:

2158

2714

os.close(null)

2159

else:

2160

# No console logging

2161

logger.removeHandler(console)

2162

2715

2163

2716

# Need to fork before connecting to D-Bus

2164

if not debug:

2717

if not foreground:

2165

2718

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

2166

2719

daemon()

2167

2720

2721

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

2722

# need to inform gobject that threads will be used.

2168

2723

gobject.threads_init()

2169

2724

2170

2725

global main_loop

2171

2726

# From the Avahi example code

2172

DBusGMainLoop(set_as_default=True )

2727

DBusGMainLoop(set_as_default=True)

2173

2728

main_loop = gobject.MainLoop()

2174

2729

bus = dbus.SystemBus()

2175

2730

# End of Avahi example code

2176

2731

if use_dbus:

2177

2732

try:

2178

2733

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

2179

bus, do_not_queue=True)

2180

old_bus_name = (dbus.service.BusName

2181

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

2182

do_not_queue=True))

2183

except dbus.exceptions.NameExistsException as e:

2184

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

2734

bus,

2735

do_not_queue=True)

2736

old_bus_name = dbus.service.BusName(

2737

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

2738

do_not_queue=True)

2739

except dbus.exceptions.DBusException as e:

2740

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

2185

2741

use_dbus = False

2186

2742

server_settings["use_dbus"] = False

2187

2743

tcp_server.use_dbus = False

2188

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2189

service = AvahiServiceToSyslog(name =

2190

server_settings["servicename"],

2191

servicetype = "_mandos._tcp",

2192

protocol = protocol, bus = bus)

2193

if server_settings["interface"]:

2194

service.interface = (if_nametoindex

2195

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

2744

if zeroconf:

2745

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2746

service = AvahiServiceToSyslog(

2747

name = server_settings["servicename"],

2748

servicetype = "_mandos._tcp",

2749

protocol = protocol,

2750

bus = bus)

2751

if server_settings["interface"]:

2752

service.interface = if_nametoindex(

2753

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

2196

2754

2197

2755

global multiprocessing_manager

2198

2756

multiprocessing_manager = multiprocessing.Manager()

2199

2757

2200

2758

client_class = Client

2201

2759

if use_dbus:

2202

client_class = functools.partial(ClientDBusTransitional,

2203

bus = bus)

2760

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

2204

2761

2205

2762

client_settings = Client.config_parser(client_config)

2206

2763

old_client_settings = {}

2207

2764

clients_data = {}

2208

2765

2766

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

2767

global wnull

2768

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

2769

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

2770

# mode

2771

if debug or not foreground:

2772

wnull.close()

2773

2209

2774

# Get client data and settings from last running state.

2210

2775

if server_settings["restore"]:

2211

2776

try:

2212

2777

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

2213

clients_data, old_client_settings = (pickle.load

2214

(stored_state))

2778

clients_data, old_client_settings = pickle.load(

2779

stored_state)

2215

2780

os.remove(stored_state_path)

2216

2781

except IOError as e:

2217

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

2218

.format(e))

2219

if e.errno != errno.ENOENT:

2782

if e.errno == errno.ENOENT:

2783

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

2784

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

2785

else:

2786

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

2787

exc_info=e)

2220

2788

raise

2221

2789

except EOFError as e:

2222

2790

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

2223

"EOFError: {0}".format(e))

2791

"EOFError:",

2792

exc_info=e)

2224

2793

2225

2794

with PGPEngine() as pgp:

2226

for client_name, client in clients_data.iteritems():

2795

for client_name, client in clients_data.items():

2796

# Skip removed clients

2797

if client_name not in client_settings:

2798

continue

2799

2227

2800

# Decide which value to use after restoring saved state.

2228

2801

# We have three different values: Old config file,

2229

2802

# new config file, and saved state.

2234

2807

# For each value in new config, check if it

2235

2808

# differs from the old config value (Except for

2236

2809

# the "secret" attribute)

2237

if (name != "secret" and

2238

value != old_client_settings[client_name]

2239

[name]):

2810

if (name != "secret"

2811

and (value !=

2812

old_client_settings[client_name][name])):

2240

2813

client[name] = value

2241

2814

except KeyError:

2242

2815

pass

2243

2816

2244

2817

# Clients who has passed its expire date can still be

2245

# enabled if its last checker was successful. Clients

2246

# whose checker failed before we stored its state is

2247

# assumed to have failed all checkers during downtime.

2818

# enabled if its last checker was successful. A Client

2819

# whose checker succeeded before we stored its state is

2820

# assumed to have successfully run all checkers during

2821

# downtime.

2248

2822

if client["enabled"]:

2249

2823

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

2250

2824

if not client["last_checked_ok"]:

2251

2825

logger.warning(

2252

"disabling client {0} - Client never "

2253

"performed a successfull checker"

2254

.format(client["name"]))

2826

"disabling client {} - Client never "

2827

"performed a successful checker".format(

2828

client_name))

2255

2829

client["enabled"] = False

2256

2830

elif client["last_checker_status"] != 0:

2257

2831

logger.warning(

2258

"disabling client {0} - Client "

2259

"last checker failed with error code {1}"

2260

.format(client["name"],

2261

client["last_checker_status"]))

2832

"disabling client {} - Client last"

2833

" checker failed with error code"

2834

" {}".format(

2835

client_name,

2836

client["last_checker_status"]))

2262

2837

client["enabled"] = False

2263

2838

else:

2264

client["expires"] = (datetime.datetime

2265

.utcnow()

2266

+ client["timeout"])

2267

2839

client["expires"] = (

2840

datetime.datetime.utcnow()

2841

+ client["timeout"])

2842

logger.debug("Last checker succeeded,"

2843

" keeping {} enabled".format(

2844

client_name))

2268

2845

try:

2269

client["secret"] = (

2270

pgp.decrypt(client["encrypted_secret"],

2271

client_settings[client_name]

2272

["secret"]))

2846

client["secret"] = pgp.decrypt(

2847

client["encrypted_secret"],

2848

client_settings[client_name]["secret"])

2273

2849

except PGPError:

2274

2850

# If decryption fails, we use secret from new settings

2275

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

2276

.format(client_name))

2277

client["secret"] = (

2278

client_settings[client_name]["secret"])

2279

2851

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

2852

client_name))

2853

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

2854

["secret"])

2280

2855

2281

2856

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

2282

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

2857

for client_name in (set(old_client_settings)

2858

- set(client_settings)):

2283

2859

del clients_data[client_name]

2284

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

2860

for client_name in (set(client_settings)

2861

- set(old_client_settings)):

2285

2862

clients_data[client_name] = client_settings[client_name]

2286

2287

# Create clients all clients

2288

for client_name, client in clients_data.iteritems():

2863

2864

# Create all client objects

2865

for client_name, client in clients_data.items():

2289

2866

tcp_server.clients[client_name] = client_class(

2290

name = client_name, settings = client)

2867

name = client_name,

2868

settings = client,

2869

server_settings = server_settings)

2291

2870

2292

2871

if not tcp_server.clients:

2293

2872

logger.warning("No clients defined")

2294

2295

if not debug:

2296

try:

2297

with pidfile:

2298

pid = os.getpid()

2299

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

2300

del pidfile

2301

except IOError:

2302

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

2303

pidfilename, pid)

2304

except NameError:

2305

# "pidfile" was never created

2306

pass

2873

2874

if not foreground:

2875

if pidfile is not None:

2876

pid = os.getpid()

2877

try:

2878

with pidfile:

2879

print(pid, file=pidfile)

2880

except IOError:

2881

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

2882

pidfilename, pid)

2883

del pidfile

2307

2884

del pidfilename

2308

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

2309

2885

2310

2886

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

2311

2887

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

2312

2888

2313

2889

if use_dbus:

2314

class MandosDBusService(dbus.service.Object):

2890

2891

@alternate_dbus_interfaces(

2892

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

2893

class MandosDBusService(DBusObjectWithObjectManager):

2315

2894

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

2895

2316

2896

def __init__(self):

2317

2897

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

2898

2318

2899

_interface = "se.recompile.Mandos"

2319

2900

2320

2901

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

2327

2908

"D-Bus signal"

2328

2909

pass

2329

2910

2911

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

2912

"true"})

2330

2913

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

2331

2914

def ClientRemoved(self, objpath, name):

2332

2915

"D-Bus signal"

2333

2916

pass

2334

2917

2918

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

2919

"true"})

2335

2920

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

2336

2921

def GetAllClients(self):

2337

2922

"D-Bus method"

2338

return dbus.Array(c.dbus_object_path

2339

for c in

2923

return dbus.Array(c.dbus_object_path for c in

2340

2924

tcp_server.clients.itervalues())

2341

2925

2926

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

2927

"true"})

2342

2928

@dbus.service.method(_interface,

2343

2929

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

2344

2930

def GetAllClientsWithProperties(self):

2345

2931

"D-Bus method"

2346

2932

return dbus.Dictionary(

2347

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

2348

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

2933

{ c.dbus_object_path: c.GetAll(

2934

"se.recompile.Mandos.Client")

2935

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

2349

2936

signature="oa{sv}")

2350

2937

2351

2938

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

2355

2942

if c.dbus_object_path == object_path:

2356

2943

del tcp_server.clients[c.name]

2357

2944

c.remove_from_connection()

2358

# Don't signal anything except ClientRemoved

2945

# Don't signal the disabling

2359

2946

c.disable(quiet=True)

2360

# Emit D-Bus signal

2361

self.ClientRemoved(object_path, c.name)

2947

# Emit D-Bus signal for removal

2948

self.client_removed_signal(c)

2362

2949

return

2363

2950

raise KeyError(object_path)

2364

2951

2365

2952

del _interface

2953

2954

@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,

2955

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

2956

def GetManagedObjects(self):

2957

"""D-Bus method"""

2958

return dbus.Dictionary(

2959

{ client.dbus_object_path:

2960

dbus.Dictionary(

2961

{ interface: client.GetAll(interface)

2962

for interface in

2963

client._get_all_interface_names()})

2964

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

2965

2966

def client_added_signal(self, client):

2967

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

2968

if use_dbus:

2969

# New standard signal

2970

self.InterfacesAdded(

2971

client.dbus_object_path,

2972

dbus.Dictionary(

2973

{ interface: client.GetAll(interface)

2974

for interface in

2975

client._get_all_interface_names()}))

2976

# Old signal

2977

self.ClientAdded(client.dbus_object_path)

2978

2979

def client_removed_signal(self, client):

2980

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

2981

if use_dbus:

2982

# New standard signal

2983

self.InterfacesRemoved(

2984

client.dbus_object_path,

2985

client._get_all_interface_names())

2986

# Old signal

2987

self.ClientRemoved(client.dbus_object_path,

2988

client.name)

2366

2989

2367

class MandosDBusServiceTransitional(MandosDBusService):

2368

__metaclass__ = AlternateDBusNamesMetaclass

2369

mandos_dbus_service = MandosDBusServiceTransitional()

2990

mandos_dbus_service = MandosDBusService()

2370

2991

2371

2992

def cleanup():

2372

2993

"Cleanup function; run on exit"

2373

service.cleanup()

2994

if zeroconf:

2995

service.cleanup()

2374

2996

2375

2997

multiprocessing.active_children()

2998

wnull.close()

2376

2999

if not (tcp_server.clients or client_settings):

2377

3000

return

2378

3001

2389

3012

2390

3013

# A list of attributes that can not be pickled

2391

3014

# + secret.

2392

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

2393

"checker"))

2394

for name, typ in (inspect.getmembers

2395

(dbus.service.Object)):

3015

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

3016

"checker", "server_settings" }

3017

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

3018

.Object):

2396

3019

exclude.add(name)

2397

3020

2398

3021

client_dict["encrypted_secret"] = (client

2405

3028

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

2406

3029

2407

3030

try:

2408

with os.fdopen(os.open(stored_state_path,

2409

(os.O_CREAT | os.O_WRONLY

2410

| os.O_TRUNC | os.O_EXCL),

2411

(stat.S_IREAD | stat.S_IWRITE)),

2412

"wb") as stored_state:

3031

with tempfile.NamedTemporaryFile(

3032

mode='wb',

3033

suffix=".pickle",

3034

prefix='clients-',

3035

dir=os.path.dirname(stored_state_path),

3036

delete=False) as stored_state:

2413

3037

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

3038

tempname = stored_state.name

3039

os.rename(tempname, stored_state_path)

2414

3040

except (IOError, OSError) as e:

2415

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

2416

.format(e))

2417

if e.errno not in set((errno.ENOENT, errno.EACCES,

2418

errno.EEXIST)):

3041

if not debug:

3042

try:

3043

os.remove(tempname)

3044

except NameError:

3045

pass

3046

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

3047

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

3048

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

3049

else:

3050

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

3051

exc_info=e)

2419

3052

raise

2420

3053

2421

3054

# Delete all clients, and settings from config

2423

3056

name, client = tcp_server.clients.popitem()

2424

3057

if use_dbus:

2425

3058

client.remove_from_connection()

2426

# Don't signal anything except ClientRemoved

3059

# Don't signal the disabling

2427

3060

client.disable(quiet=True)

2428

if use_dbus:

2429

# Emit D-Bus signal

2430

mandos_dbus_service.ClientRemoved(client

2431

.dbus_object_path,

2432

client.name)

3061

# Emit D-Bus signal for removal

3062

mandos_dbus_service.client_removed_signal(client)

2433

3063

client_settings.clear()

2434

3064

2435

3065

atexit.register(cleanup)

2436

3066

2437

3067

for client in tcp_server.clients.itervalues():

2438

3068

if use_dbus:

2439

# Emit D-Bus signal

2440

mandos_dbus_service.ClientAdded(client.dbus_object_path)

3069

# Emit D-Bus signal for adding

3070

mandos_dbus_service.client_added_signal(client)

2441

3071

# Need to initiate checking of clients

2442

3072

if client.enabled:

2443

3073

client.init_checker()

2446

3076

tcp_server.server_activate()

2447

3077

2448

3078

# Find out what port we got

2449

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

3079

if zeroconf:

3080

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

2450

3081

if use_ipv6:

2451

3082

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

2452

" flowinfo %d, scope_id %d"

2453

% tcp_server.socket.getsockname())

3083

" flowinfo %d, scope_id %d",

3084

*tcp_server.socket.getsockname())

2454

3085

else: # IPv4

2455

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

2456

% tcp_server.socket.getsockname())

3086

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

3087

*tcp_server.socket.getsockname())

2457

3088

2458

3089

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

2459

3090

2460

3091

try:

2461

# From the Avahi example code

2462

try:

2463

service.activate()

2464

except dbus.exceptions.DBusException as error:

2465

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

2466

cleanup()

2467

sys.exit(1)

2468

# End of Avahi example code

3092

if zeroconf:

3093

# From the Avahi example code

3094

try:

3095

service.activate()

3096

except dbus.exceptions.DBusException as error:

3097

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

3098

cleanup()

3099

sys.exit(1)

3100

# End of Avahi example code

2469

3101

2470

3102

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

2471

3103

lambda *args, **kwargs:

2475

3107

logger.debug("Starting main loop")

2476

3108

main_loop.run()

2477

3109

except AvahiError as error:

2478

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

3110

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

2479

3111

cleanup()

2480

3112

sys.exit(1)

2481

3113

except KeyboardInterrupt:

2486

3118

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

2487

3119

cleanup()

2488

3120

3121

2489

3122

if __name__ == '__main__':

2490

3123

main()