/mandos/trunk : revision 749.1.1

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

36

37

from future_builtins import *

38

39

import SocketServer as socketserver

39

try:

40

import SocketServer as socketserver

41

except ImportError:

42

import socketserver

40

43

import socket

41

44

import argparse

42

45

import datetime

47

50

import gnutls.library.functions

48

51

import gnutls.library.constants

49

52

import gnutls.library.types

50

import ConfigParser as configparser

53

try:

54

import ConfigParser as configparser

55

except ImportError:

56

import configparser

51

57

import sys

52

58

import re

53

59

import os

62

68

import struct

63

69

import fcntl

64

70

import functools

65

import cPickle as pickle

71

try:

72

import cPickle as pickle

73

except ImportError:

74

import pickle

66

75

import multiprocessing

67

76

import types

68

77

import binascii

72

81

73

82

import dbus

74

83

import dbus.service

75

import gobject

84

try:

85

import gobject

86

except ImportError:

87

from gi.repository import GObject as gobject

76

88

import avahi

77

89

from dbus.mainloop.glib import DBusGMainLoop

78

90

import ctypes

88

100

except ImportError:

89

101

SO_BINDTODEVICE = None

90

102

91

version = "1.6.3"

103

if sys.version_info.major == 2:

104

str = unicode

105

106

version = "1.6.9"

92

107

stored_state_file = "clients.pickle"

93

108

94

109

logger = logging.getLogger()

95

syslogger = (logging.handlers.SysLogHandler

96

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

97

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

110

syslogger = None

98

111

99

112

try:

100

if_nametoindex = (ctypes.cdll.LoadLibrary

101

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

102

.if_nametoindex)

113

if_nametoindex = ctypes.cdll.LoadLibrary(

114

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

103

115

except (OSError, AttributeError):

116

104

117

def if_nametoindex(interface):

105

118

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

106

119

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

107

120

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

108

121

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

109

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

110

interface))

111

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

112

ifreq[16:20])[0]

122

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

123

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

113

124

return interface_index

114

125

115

126

116

127

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

117

128

"""init logger and add loglevel"""

118

129

130

global syslogger

131

syslogger = (logging.handlers.SysLogHandler(

132

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

133

address = "/dev/log"))

119

134

syslogger.setFormatter(logging.Formatter

120

135

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

121

136

' %(message)s'))

138

153

139

154

class PGPEngine(object):

140

155

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

156

141

157

def __init__(self):

142

158

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

143

159

self.gnupgargs = ['--batch',

182

198

183

199

def encrypt(self, data, password):

184

200

passphrase = self.password_encode(password)

185

with tempfile.NamedTemporaryFile(dir=self.tempdir

186

) as passfile:

201

with tempfile.NamedTemporaryFile(

202

dir=self.tempdir) as passfile:

187

203

passfile.write(passphrase)

188

204

passfile.flush()

189

205

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

200

216

201

217

def decrypt(self, data, password):

202

218

passphrase = self.password_encode(password)

203

with tempfile.NamedTemporaryFile(dir = self.tempdir

204

) as passfile:

219

with tempfile.NamedTemporaryFile(

220

dir = self.tempdir) as passfile:

205

221

passfile.write(passphrase)

206

222

passfile.flush()

207

223

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

211

227

stdin = subprocess.PIPE,

212

228

stdout = subprocess.PIPE,

213

229

stderr = subprocess.PIPE)

214

decrypted_plaintext, err = proc.communicate(input

215

= data)

230

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

216

231

if proc.returncode != 0:

217

232

raise PGPError(err)

218

233

return decrypted_plaintext

221

236

class AvahiError(Exception):

222

237

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

223

238

self.value = value

224

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

225

def __unicode__(self):

226

return unicode(repr(self.value))

239

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

240

**kwargs)

241

227

242

228

243

class AvahiServiceError(AvahiError):

229

244

pass

230

245

246

231

247

class AvahiGroupError(AvahiError):

232

248

pass

233

249

253

269

bus: dbus.SystemBus()

254

270

"""

255

271

256

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

257

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

258

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

259

protocol = avahi.PROTO_UNSPEC, bus = None):

272

def __init__(self,

273

interface = avahi.IF_UNSPEC,

274

name = None,

275

servicetype = None,

276

port = None,

277

TXT = None,

278

domain = "",

279

host = "",

280

max_renames = 32768,

281

protocol = avahi.PROTO_UNSPEC,

282

bus = None):

260

283

self.interface = interface

261

284

self.name = name

262

285

self.type = servicetype

272

295

self.bus = bus

273

296

self.entry_group_state_changed_match = None

274

297

275

def rename(self):

298

def rename(self, remove=True):

276

299

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

277

300

if self.rename_count >= self.max_renames:

278

301

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

279

302

" after %i retries, exiting.",

280

303

self.rename_count)

281

304

raise AvahiServiceError("Too many renames")

282

self.name = unicode(self.server

283

.GetAlternativeServiceName(self.name))

305

self.name = str(

306

self.server.GetAlternativeServiceName(self.name))

307

self.rename_count += 1

284

308

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

285

309

self.name)

286

self.remove()

310

if remove:

311

self.remove()

287

312

try:

288

313

self.add()

289

314

except dbus.exceptions.DBusException as error:

290

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

291

self.cleanup()

292

os._exit(1)

293

self.rename_count += 1

315

if (error.get_dbus_name()

316

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

317

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

318

return self.rename(remove=False)

319

else:

320

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

321

self.cleanup()

322

os._exit(1)

294

323

295

324

def remove(self):

296

325

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

334

363

self.rename()

335

364

elif state == avahi.ENTRY_GROUP_FAILURE:

336

365

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

337

unicode(error))

338

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

339

.format(error))

366

str(error))

367

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

340

368

341

369

def cleanup(self):

342

370

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

352

380

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

353

381

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

354

382

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

355

bad_states = { avahi.SERVER_INVALID:

356

"Zeroconf server invalid",

357

avahi.SERVER_REGISTERING: None,

358

avahi.SERVER_COLLISION:

359

"Zeroconf server name collision",

360

avahi.SERVER_FAILURE:

361

"Zeroconf server failure" }

383

bad_states = {

384

avahi.SERVER_INVALID: "Zeroconf server invalid",

385

avahi.SERVER_REGISTERING: None,

386

avahi.SERVER_COLLISION: "Zeroconf server name collision",

387

avahi.SERVER_FAILURE: "Zeroconf server failure",

388

}

362

389

if state in bad_states:

363

390

if bad_states[state] is not None:

364

391

if error is None:

383

410

follow_name_owner_changes=True),

384

411

avahi.DBUS_INTERFACE_SERVER)

385

412

self.server.connect_to_signal("StateChanged",

386

self.server_state_changed)

413

self.server_state_changed)

387

414

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

388

415

389

416

390

417

class AvahiServiceToSyslog(AvahiService):

391

def rename(self):

418

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

392

419

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

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

396

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

397

.format(self.name)))

420

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

421

syslogger.setFormatter(logging.Formatter(

422

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

423

.format(self.name)))

398

424

return ret

399

425

400

401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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

404

+ (td.seconds * 1000)

405

+ (td.microseconds // 1000))

406

426

def subprocess_call_pipe(connection, # : multiprocessing.Connection

427

*args, **kwargs):

428

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

429

430

This function runs a synchronous subprocess.call(), and writes the

431

resulting return code on the provided multiprocessing.Connection.

432

"""

433

connection.send(subprocess.call(*args, **kwargs))

434

connection.close()

407

435

408

436

class Client(object):

409

437

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

436

464

last_checker_status: integer between 0 and 255 reflecting exit

437

465

status of last checker. -1 reflects crashed

438

466

checker, -2 means no checker completed yet.

467

last_checker_signal: The signal which killed the last checker, if

468

last_checker_status is -1

439

469

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

440

470

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

441

471

D-Bus identifiers

454

484

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

455

485

"last_approval_request", "last_checked_ok",

456

486

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

457

client_defaults = { "timeout": "PT5M",

458

"extended_timeout": "PT15M",

459

"interval": "PT2M",

460

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

461

"host": "",

462

"approval_delay": "PT0S",

463

"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

471

472

def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

475

476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

487

client_defaults = {

488

"timeout": "PT5M",

489

"extended_timeout": "PT15M",

490

"interval": "PT2M",

491

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

492

"host": "",

493

"approval_delay": "PT0S",

494

"approval_duration": "PT1S",

495

"approved_by_default": "True",

496

"enabled": "True",

497

}

482

498

483

499

@staticmethod

484

500

def config_parser(config):

500

516

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

501

517

"enabled")

502

518

519

# Uppercase and remove spaces from fingerprint for later

520

# comparison purposes with return value from the

521

# fingerprint() function

503

522

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

504

523

.replace(" ", ""))

505

524

if "secret" in section:

510

529

"rb") as secfile:

511

530

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

512

531

else:

513

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

532

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

514

533

.format(section))

515

534

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

516

535

client["extended_timeout"] = string_to_delta(

533

552

server_settings = {}

534

553

self.server_settings = server_settings

535

554

# adding all client settings

536

for setting, value in settings.iteritems():

555

for setting, value in settings.items():

537

556

setattr(self, setting, value)

538

557

539

558

if self.enabled:

547

566

self.expires = None

548

567

549

568

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

553

569

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

554

570

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

555

571

datetime.datetime.utcnow())

562

578

self.current_checker_command = None

563

579

self.approved = None

564

580

self.approvals_pending = 0

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

581

self.changedstate = multiprocessing_manager.Condition(

582

multiprocessing_manager.Lock())

583

self.client_structure = [attr

584

for attr in self.__dict__.iterkeys()

570

585

if not attr.startswith("_")]

571

586

self.client_structure.append("client_structure")

572

587

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

588

for name, t in inspect.getmembers(

589

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

577

590

if not name.startswith("_"):

578

591

self.client_structure.append(name)

579

592

621

634

# and every interval from then on.

622

635

if self.checker_initiator_tag is not None:

623

636

gobject.source_remove(self.checker_initiator_tag)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

637

self.checker_initiator_tag = gobject.timeout_add(

638

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

639

self.start_checker)

627

640

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

628

641

if self.disable_initiator_tag is not None:

629

642

gobject.source_remove(self.disable_initiator_tag)

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

643

self.disable_initiator_tag = gobject.timeout_add(

644

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

633

645

# Also start a new checker *right now*.

634

646

self.start_checker()

635

647

636

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

648

def checker_callback(self, source, condition,

649

(connection, command)):

637

650

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

638

651

self.checker_callback_tag = None

639

652

self.checker = None

640

if os.WIFEXITED(condition):

641

self.last_checker_status = os.WEXITSTATUS(condition)

653

# Read return code from connection (see subprocess_call_pipe)

654

returncode = connection.recv()

655

connection.close()

656

657

if returncode >= 0:

658

self.last_checker_status = returncode

659

self.last_checker_signal = None

642

660

if self.last_checker_status == 0:

643

661

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

644

662

vars(self))

645

663

self.checked_ok()

646

664

else:

647

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

648

vars(self))

665

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

649

666

else:

650

667

self.last_checker_status = -1

668

self.last_checker_signal = -returncode

651

669

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

652

670

vars(self))

671

return False

653

672

654

673

def checked_ok(self):

655

674

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

656

675

self.last_checked_ok = datetime.datetime.utcnow()

657

676

self.last_checker_status = 0

677

self.last_checker_signal = None

658

678

self.bump_timeout()

659

679

660

680

def bump_timeout(self, timeout=None):

665

685

gobject.source_remove(self.disable_initiator_tag)

666

686

self.disable_initiator_tag = None

667

687

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

688

self.disable_initiator_tag = gobject.timeout_add(

689

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

671

690

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

672

691

673

692

def need_approval(self):

687

706

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

688

707

# should be.

689

708

690

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

691

try:

692

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

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

698

else:

699

if pid:

700

logger.warning("Checker was a zombie")

701

gobject.source_remove(self.checker_callback_tag)

702

self.checker_callback(pid, status,

703

self.current_checker_command)

709

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

710

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

711

self.checker.join()

712

self.checker = None

704

713

# Start a new checker if needed

705

714

if self.checker is None:

706

715

# Escape attributes for the shell

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

716

escaped_attrs = {

717

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

718

for attr in self.runtime_expansions }

711

719

try:

712

720

command = self.checker_command % escaped_attrs

713

721

except TypeError as error:

714

722

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

715

self.checker_command, exc_info=error)

716

return True # Try again later

723

self.checker_command,

724

exc_info=error)

725

return True # Try again later

717

726

self.current_checker_command = command

718

try:

719

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

720

command, self.name)

721

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

722

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

723

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

724

# always replaced by /dev/null.)

725

# The exception is when not debugging but nevertheless

726

# running in the foreground; use the previously

727

# created wnull.

728

popen_args = {}

729

if (not self.server_settings["debug"]

730

and self.server_settings["foreground"]):

731

popen_args.update({"stdout": wnull,

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True, cwd="/",

736

**popen_args)

737

except OSError as error:

738

logger.error("Failed to start subprocess",

739

exc_info=error)

740

return True

741

self.checker_callback_tag = (gobject.child_watch_add

742

(self.checker.pid,

743

self.checker_callback,

744

data=command))

745

# The checker may have completed before the gobject

746

# watch was added. Check for this.

747

try:

748

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

749

except OSError as error:

750

if error.errno == errno.ECHILD:

751

# This should never happen

752

logger.error("Child process vanished",

753

exc_info=error)

754

return True

755

raise

756

if pid:

757

gobject.source_remove(self.checker_callback_tag)

758

self.checker_callback(pid, status, command)

727

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

728

self.name)

729

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

730

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

731

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

732

# always replaced by /dev/null.)

733

# The exception is when not debugging but nevertheless

734

# running in the foreground; use the previously

735

# created wnull.

736

popen_args = { "close_fds": True,

737

"shell": True,

738

"cwd": "/" }

739

if (not self.server_settings["debug"]

740

and self.server_settings["foreground"]):

741

popen_args.update({"stdout": wnull,

742

"stderr": wnull })

743

pipe = multiprocessing.Pipe(duplex=False)

744

self.checker = multiprocessing.Process(

745

target=subprocess_call_pipe, args=(pipe[1], command),

746

kwargs=popen_args)

747

self.checker.start()

748

self.checker_callback_tag = gobject.io_add_watch(

749

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

750

self.checker_callback, (pipe[0], command))

759

751

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

760

752

return True

761

753

767

759

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

768

760

return

769

761

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

770

try:

771

self.checker.terminate()

772

#time.sleep(0.5)

773

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

774

# self.checker.kill()

775

except OSError as error:

776

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

777

raise

762

self.checker.terminate()

778

763

self.checker = None

779

764

780

765

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

766

def dbus_service_property(dbus_interface,

767

signature="v",

768

access="readwrite",

769

byte_arrays=False):

783

770

"""Decorators for marking methods of a DBusObjectWithProperties to

784

771

become properties on the D-Bus.

785

772

794

781

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

795

782

if byte_arrays and signature != "ay":

796

783

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

797

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

784

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

785

798

786

def decorator(func):

799

787

func._dbus_is_property = True

800

788

func._dbus_interface = dbus_interface

805

793

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

806

794

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

807

795

return func

796

808

797

return decorator

809

798

810

799

819

808

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

820

809

"false"}

821

810

"""

811

822

812

def decorator(func):

823

813

func._dbus_is_interface = True

824

814

func._dbus_interface = dbus_interface

825

815

func._dbus_name = dbus_interface

826

816

return func

817

827

818

return decorator

828

819

829

820

831

822

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

832

823

Usage:

833

824

825

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

826

"org.freedesktop.DBus.Property."

827

"EmitsChangedSignal": "false"})

834

828

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

835

829

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

839

830

def Property_dbus_property(self):

840

831

return dbus.Boolean(False)

841

832

"""

833

842

834

def decorator(func):

843

835

func._dbus_annotations = annotations

844

836

return func

837

845

838

return decorator

846

839

847

840

848

841

class DBusPropertyException(dbus.exceptions.DBusException):

849

842

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

850

843

"""

851

def __unicode__(self):

852

return unicode(str(self))

844

pass

853

845

854

846

855

847

class DBusPropertyAccessException(DBusPropertyException):

879

871

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

880

872

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

881

873

"""

882

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

874

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

883

875

False)

884

876

885

877

def _get_all_dbus_things(self, thing):

886

878

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

887

879

"""

888

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

889

name),

880

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

890

881

athing.__get__(self))

891

882

for cls in self.__class__.__mro__

892

883

for name, athing in

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

884

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

895

885

896

886

def _get_dbus_property(self, interface_name, property_name):

897

887

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

898

888

property with the specified name and interface.

899

889

"""

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

self._is_dbus_thing("property"))):

890

for cls in self.__class__.__mro__:

891

for name, value in inspect.getmembers(

892

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

904

893

if (value._dbus_name == property_name

905

894

and value._dbus_interface == interface_name):

906

895

return value.__get__(self)

907

896

908

897

# No such property

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

898

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

899

self.dbus_object_path, interface_name, property_name))

912

900

913

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

901

@dbus.service.method(dbus.PROPERTIES_IFACE,

902

in_signature="ss",

914

903

out_signature="v")

915

904

def Get(self, interface_name, property_name):

916

905

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

935

924

# signatures other than "ay".

936

925

if prop._dbus_signature != "ay":

937

926

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

938

"'ay' signature {0!r}"

927

"'ay' signature {!r}"

939

928

.format(prop._dbus_signature))

940

929

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

941

930

for byte in value))

942

931

prop(value)

943

932

944

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

933

@dbus.service.method(dbus.PROPERTIES_IFACE,

934

in_signature="s",

945

935

out_signature="a{sv}")

946

936

def GetAll(self, interface_name):

947

937

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

962

952

if not hasattr(value, "variant_level"):

963

953

properties[name] = value

964

954

continue

965

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

966

value.variant_level+1)

955

properties[name] = type(value)(

956

value, variant_level = value.variant_level + 1)

967

957

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

968

958

959

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

960

def PropertiesChanged(self, interface_name, changed_properties,

961

invalidated_properties):

962

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

963

standard.

964

"""

965

pass

966

969

967

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

970

968

out_signature="s",

971

969

path_keyword='object_path',

979

977

connection)

980

978

try:

981

979

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

980

982

981

def make_tag(document, name, prop):

983

982

e = document.createElement("property")

984

983

e.setAttribute("name", name)

985

984

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

986

985

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

987

986

return e

987

988

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

989

# Add property tags

990

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

1002

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

1003

and prop._dbus_interface

1004

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

1005

annots.update(getattr

1006

(prop,

1007

"_dbus_annotations",

1008

{}))

1009

for name, value in annots.iteritems():

1005

annots.update(getattr(

1006

prop, "_dbus_annotations", {}))

1007

for name, value in annots.items():

1010

1008

ann_tag = document.createElement(

1011

1009

"annotation")

1012

1010

ann_tag.setAttribute("name", name)

1015

1013

# Add interface annotation tags

1016

1014

for annotation, value in dict(

1017

1015

itertools.chain.from_iterable(

1018

annotations().iteritems()

1019

for name, annotations in

1020

self._get_all_dbus_things("interface")

1016

annotations().items()

1017

for name, annotations

1018

in self._get_all_dbus_things("interface")

1021

1019

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

1022

)).iteritems():

1020

)).items():

1023

1021

ann_tag = document.createElement("annotation")

1024

1022

ann_tag.setAttribute("name", annotation)

1025

1023

ann_tag.setAttribute("value", value)

1052

1050

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

1053

1051

if dt is None:

1054

1052

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

1055

return dbus.String(dt.isoformat(),

1056

variant_level=variant_level)

1053

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

1057

1054

1058

1055

1059

1056

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1079

1076

(from DBusObjectWithProperties) and interfaces (from the

1080

1077

dbus_interface_annotations decorator).

1081

1078

"""

1079

1082

1080

def wrapper(cls):

1083

1081

for orig_interface_name, alt_interface_name in (

1084

alt_interface_names.iteritems()):

1082

alt_interface_names.items()):

1085

1083

attr = {}

1086

1084

interface_names = set()

1087

1085

# Go though all attributes of the class

1089

1087

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

1090

1088

# with the wrong interface name

1091

1089

if (not hasattr(attribute, "_dbus_interface")

1092

or not attribute._dbus_interface

1093

.startswith(orig_interface_name)):

1090

or not attribute._dbus_interface.startswith(

1091

orig_interface_name)):

1094

1092

continue

1095

1093

# Create an alternate D-Bus interface name based on

1096

1094

# the current name

1097

alt_interface = (attribute._dbus_interface

1098

.replace(orig_interface_name,

1099

alt_interface_name))

1095

alt_interface = attribute._dbus_interface.replace(

1096

orig_interface_name, alt_interface_name)

1100

1097

interface_names.add(alt_interface)

1101

1098

# Is this a D-Bus signal?

1102

1099

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

1103

1100

# Extract the original non-method undecorated

1104

1101

# function by black magic

1105

1102

nonmethod_func = (dict(

1106

zip(attribute.func_code.co_freevars,

1107

attribute.__closure__))["func"]

1108

.cell_contents)

1103

zip(attribute.func_code.co_freevars,

1104

attribute.__closure__))

1105

["func"].cell_contents)

1109

1106

# Create a new, but exactly alike, function

1110

1107

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

1111

1108

# with the alternate D-Bus interface name

1112

new_function = (dbus.service.signal

1113

(alt_interface,

1114

attribute._dbus_signature)

1109

new_function = (dbus.service.signal(

1110

alt_interface, attribute._dbus_signature)

1115

1111

(types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)))

1112

nonmethod_func.func_code,

1113

nonmethod_func.func_globals,

1114

nonmethod_func.func_name,

1115

nonmethod_func.func_defaults,

1116

nonmethod_func.func_closure)))

1121

1117

# Copy annotations, if any

1122

1118

try:

1123

new_function._dbus_annotations = (

1124

dict(attribute._dbus_annotations))

1119

new_function._dbus_annotations = dict(

1120

attribute._dbus_annotations)

1125

1121

except AttributeError:

1126

1122

pass

1127

1123

# Define a creator of a function to call both the

1132

1128

"""This function is a scope container to pass

1133

1129

func1 and func2 to the "call_both" function

1134

1130

outside of its arguments"""

1131

1135

1132

def call_both(*args, **kwargs):

1136

1133

"""This function will emit two D-Bus

1137

1134

signals by calling func1 and func2"""

1138

1135

func1(*args, **kwargs)

1139

1136

func2(*args, **kwargs)

1137

1140

1138

return call_both

1141

1139

# Create the "call_both" function and add it to

1142

1140

# the class

1147

1145

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

1148

1146

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

1149

1147

# to the class.

1150

attr[attrname] = (dbus.service.method

1151

(alt_interface,

1152

attribute._dbus_in_signature,

1153

attribute._dbus_out_signature)

1154

(types.FunctionType

1155

(attribute.func_code,

1156

attribute.func_globals,

1157

attribute.func_name,

1158

attribute.func_defaults,

1159

attribute.func_closure)))

1148

attr[attrname] = (

1149

dbus.service.method(

1150

alt_interface,

1151

attribute._dbus_in_signature,

1152

attribute._dbus_out_signature)

1153

(types.FunctionType(attribute.func_code,

1154

attribute.func_globals,

1155

attribute.func_name,

1156

attribute.func_defaults,

1157

attribute.func_closure)))

1160

1158

# Copy annotations, if any

1161

1159

try:

1162

attr[attrname]._dbus_annotations = (

1163

dict(attribute._dbus_annotations))

1160

attr[attrname]._dbus_annotations = dict(

1161

attribute._dbus_annotations)

1164

1162

except AttributeError:

1165

1163

pass

1166

1164

# Is this a D-Bus property?

1169

1167

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

1170

1168

# property with the alternate D-Bus interface

1171

1169

# name. Add it to the class.

1172

attr[attrname] = (dbus_service_property

1173

(alt_interface,

1174

attribute._dbus_signature,

1175

attribute._dbus_access,

1176

attribute

1177

._dbus_get_args_options

1178

["byte_arrays"])

1179

(types.FunctionType

1180

(attribute.func_code,

1181

attribute.func_globals,

1182

attribute.func_name,

1183

attribute.func_defaults,

1184

attribute.func_closure)))

1170

attr[attrname] = (dbus_service_property(

1171

alt_interface, attribute._dbus_signature,

1172

attribute._dbus_access,

1173

attribute._dbus_get_args_options

1174

["byte_arrays"])

1175

(types.FunctionType(

1176

attribute.func_code,

1177

attribute.func_globals,

1178

attribute.func_name,

1179

attribute.func_defaults,

1180

attribute.func_closure)))

1185

1181

# Copy annotations, if any

1186

1182

try:

1187

attr[attrname]._dbus_annotations = (

1188

dict(attribute._dbus_annotations))

1183

attr[attrname]._dbus_annotations = dict(

1184

attribute._dbus_annotations)

1189

1185

except AttributeError:

1190

1186

pass

1191

1187

# Is this a D-Bus interface?

1194

1190

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

1195

1191

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

1196

1192

# to the class.

1197

attr[attrname] = (dbus_interface_annotations

1198

(alt_interface)

1199

(types.FunctionType

1200

(attribute.func_code,

1201

attribute.func_globals,

1202

attribute.func_name,

1203

attribute.func_defaults,

1204

attribute.func_closure)))

1193

attr[attrname] = (

1194

dbus_interface_annotations(alt_interface)

1195

(types.FunctionType(attribute.func_code,

1196

attribute.func_globals,

1197

attribute.func_name,

1198

attribute.func_defaults,

1199

attribute.func_closure)))

1205

1200

if deprecate:

1206

1201

# Deprecate all alternate interfaces

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1202

iname="_AlternateDBusNames_interface_annotation{}"

1208

1203

for interface_name in interface_names:

1204

1209

1205

@dbus_interface_annotations(interface_name)

1210

1206

def func(self):

1211

1207

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

1212

"true" }

1208

"true" }

1213

1209

# Find an unused name

1214

1210

for aname in (iname.format(i)

1215

1211

for i in itertools.count()):

1219

1215

if interface_names:

1220

1216

# Replace the class with a new subclass of it with

1221

1217

# methods, signals, etc. as created above.

1222

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

1223

(cls,), attr)

1218

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

1219

(cls, ), attr)

1224

1220

return cls

1221

1225

1222

return wrapper

1226

1223

1227

1224

1228

1225

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

1229

"se.bsnet.fukt.Mandos"})

1226

"se.bsnet.fukt.Mandos"})

1230

1227

class ClientDBus(Client, DBusObjectWithProperties):

1231

1228

"""A Client class using D-Bus

1232

1229

1236

1233

"""

1237

1234

1238

1235

runtime_expansions = (Client.runtime_expansions

1239

+ ("dbus_object_path",))

1236

+ ("dbus_object_path", ))

1237

1238

_interface = "se.recompile.Mandos.Client"

1240

1239

1241

1240

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

1242

1241

1245

1244

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

1246

1245

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

1247

1246

# the D-Bus

1248

client_object_name = unicode(self.name).translate(

1247

client_object_name = str(self.name).translate(

1249

1248

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

1250

1249

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

1251

self.dbus_object_path = (dbus.ObjectPath

1252

("/clients/" + client_object_name))

1250

self.dbus_object_path = dbus.ObjectPath(

1251

"/clients/" + client_object_name)

1253

1252

DBusObjectWithProperties.__init__(self, self.bus,

1254

1253

self.dbus_object_path)

1255

1254

1256

def notifychangeproperty(transform_func,

1257

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1255

def notifychangeproperty(transform_func, dbus_name,

1256

type_func=lambda x: x,

1257

variant_level=1,

1258

invalidate_only=False,

1259

_interface=_interface):

1259

1260

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

1260

1261

its changes to DBus.

1261

1262

1266

1267

to the D-Bus. Default: no transform

1267

1268

variant_level: D-Bus variant level. Default: 1

1268

1269

"""

1269

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

1270

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

1271

1270

1272

def setter(self, value):

1271

1273

if hasattr(self, "dbus_object_path"):

1272

1274

if (not hasattr(self, attrname) or

1273

1275

type_func(getattr(self, attrname, None))

1274

1276

!= type_func(value)):

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_value)

1277

if invalidate_only:

1278

self.PropertiesChanged(

1279

_interface, dbus.Dictionary(),

1280

dbus.Array((dbus_name, )))

1281

else:

1282

dbus_value = transform_func(

1283

type_func(value),

1284

variant_level = variant_level)

1285

self.PropertyChanged(dbus.String(dbus_name),

1286

dbus_value)

1287

self.PropertiesChanged(

1288

_interface,

1289

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

1290

dbus_value }),

1291

dbus.Array())

1280

1292

setattr(self, attrname, value)

1281

1293

1282

1294

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

1288

1300

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

1289

1301

last_enabled = notifychangeproperty(datetime_to_dbus,

1290

1302

"LastEnabled")

1291

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

1292

type_func = lambda checker:

1293

checker is not None)

1303

checker = notifychangeproperty(

1304

dbus.Boolean, "CheckerRunning",

1305

type_func = lambda checker: checker is not None)

1294

1306

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1295

1307

"LastCheckedOK")

1296

1308

last_checker_status = notifychangeproperty(dbus.Int16,

1299

1311

datetime_to_dbus, "LastApprovalRequest")

1300

1312

approved_by_default = notifychangeproperty(dbus.Boolean,

1301

1313

"ApprovedByDefault")

1302

approval_delay = notifychangeproperty(dbus.UInt64,

1303

"ApprovalDelay",

1304

type_func =

1305

timedelta_to_milliseconds)

1314

approval_delay = notifychangeproperty(

1315

dbus.UInt64, "ApprovalDelay",

1316

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

1306

1317

approval_duration = notifychangeproperty(

1307

1318

dbus.UInt64, "ApprovalDuration",

1308

type_func = timedelta_to_milliseconds)

1319

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

1309

1320

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

1310

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

1311

type_func =

1312

timedelta_to_milliseconds)

1321

timeout = notifychangeproperty(

1322

dbus.UInt64, "Timeout",

1323

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

1313

1324

extended_timeout = notifychangeproperty(

1314

1325

dbus.UInt64, "ExtendedTimeout",

1315

type_func = timedelta_to_milliseconds)

1316

interval = notifychangeproperty(dbus.UInt64,

1317

"Interval",

1318

type_func =

1319

timedelta_to_milliseconds)

1326

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

1327

interval = notifychangeproperty(

1328

dbus.UInt64, "Interval",

1329

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

1320

1330

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

1331

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

1332

invalidate_only=True)

1321

1333

1322

1334

del notifychangeproperty

1323

1335

1330

1342

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

1331

1343

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

1332

1344

1333

def checker_callback(self, pid, condition, command,

1334

*args, **kwargs):

1335

self.checker_callback_tag = None

1336

self.checker = None

1337

if os.WIFEXITED(condition):

1338

exitstatus = os.WEXITSTATUS(condition)

1345

def checker_callback(self, source, condition,

1346

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

1347

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

1348

(connection, command), *args,

1349

**kwargs)

1350

exitstatus = self.last_checker_status

1351

if exitstatus >= 0:

1339

1352

# Emit D-Bus signal

1340

1353

self.CheckerCompleted(dbus.Int16(exitstatus),

1341

dbus.Int64(condition),

1354

dbus.Int64(0),

1342

1355

dbus.String(command))

1343

1356

else:

1344

1357

# Emit D-Bus signal

1345

1358

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

1346

dbus.Int64(condition),

1359

dbus.Int64(

1360

self.last_checker_signal),

1347

1361

dbus.String(command))

1348

1349

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

1350

*args, **kwargs)

1362

return ret

1351

1363

1352

1364

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

1353

old_checker = self.checker

1354

if self.checker is not None:

1355

old_checker_pid = self.checker.pid

1356

else:

1357

old_checker_pid = None

1365

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

1358

1366

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

1359

1367

# Only if new checker process was started

1360

1368

if (self.checker is not None

1369

1377

1370

1378

def approve(self, value=True):

1371

1379

self.approved = value

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1380

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

1381

* 1000), self._reset_approved)

1375

1382

self.send_changedstate()

1376

1383

1377

1384

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1379

1385

1380

1386

## Interfaces

1381

1387

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

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

1385

"false"}

1386

1387

1388

## Signals

1388

1389

1390

# CheckerCompleted - signal

1399

1400

pass

1400

1401

1402

# PropertyChanged - signal

1403

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

1402

1404

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

1403

1405

def PropertyChanged(self, property, value):

1404

1406

"D-Bus signal"

1468

1470

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

1469

1471

1470

1472

# ApprovedByDefault - property

1471

@dbus_service_property(_interface, signature="b",

1473

@dbus_service_property(_interface,

1474

signature="b",

1472

1475

access="readwrite")

1473

1476

def ApprovedByDefault_dbus_property(self, value=None):

1474

1477

if value is None: # get

1476

1479

self.approved_by_default = bool(value)

1477

1480

1478

1481

# ApprovalDelay - property

1479

@dbus_service_property(_interface, signature="t",

1482

@dbus_service_property(_interface,

1483

signature="t",

1480

1484

access="readwrite")

1481

1485

def ApprovalDelay_dbus_property(self, value=None):

1482

1486

if value is None: # get

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1487

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

1488

* 1000)

1484

1489

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

1485

1490

1486

1491

# ApprovalDuration - property

1487

@dbus_service_property(_interface, signature="t",

1492

@dbus_service_property(_interface,

1493

signature="t",

1488

1494

access="readwrite")

1489

1495

def ApprovalDuration_dbus_property(self, value=None):

1490

1496

if value is None: # get

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1497

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

1498

* 1000)

1493

1499

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

1494

1500

1495

1501

# Name - property

1503

1509

return dbus.String(self.fingerprint)

1504

1510

1505

1511

# Host - property

1506

@dbus_service_property(_interface, signature="s",

1512

@dbus_service_property(_interface,

1513

signature="s",

1507

1514

access="readwrite")

1508

1515

def Host_dbus_property(self, value=None):

1509

1516

if value is None: # get

1510

1517

return dbus.String(self.host)

1511

self.host = unicode(value)

1518

self.host = str(value)

1512

1519

1513

1520

# Created - property

1514

1521

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

1521

1528

return datetime_to_dbus(self.last_enabled)

1522

1529

1523

1530

# Enabled - property

1524

@dbus_service_property(_interface, signature="b",

1531

@dbus_service_property(_interface,

1532

signature="b",

1525

1533

access="readwrite")

1526

1534

def Enabled_dbus_property(self, value=None):

1527

1535

if value is None: # get

1532

1540

self.disable()

1533

1541

1534

1542

# LastCheckedOK - property

1535

@dbus_service_property(_interface, signature="s",

1543

@dbus_service_property(_interface,

1544

signature="s",

1536

1545

access="readwrite")

1537

1546

def LastCheckedOK_dbus_property(self, value=None):

1538

1547

if value is not None:

1541

1550

return datetime_to_dbus(self.last_checked_ok)

1542

1551

1543

1552

# LastCheckerStatus - property

1544

@dbus_service_property(_interface, signature="n",

1545

access="read")

1553

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

1546

1554

def LastCheckerStatus_dbus_property(self):

1547

1555

return dbus.Int16(self.last_checker_status)

1548

1556

1557

1565

return datetime_to_dbus(self.last_approval_request)

1558

1566

1559

1567

# Timeout - property

1560

@dbus_service_property(_interface, signature="t",

1568

@dbus_service_property(_interface,

1569

signature="t",

1561

1570

access="readwrite")

1562

1571

def Timeout_dbus_property(self, value=None):

1563

1572

if value is None: # get

1564

return dbus.UInt64(self.timeout_milliseconds())

1573

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

1565

1574

old_timeout = self.timeout

1566

1575

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

1567

1576

# Reschedule disabling

1576

1585

is None):

1577

1586

return

1578

1587

gobject.source_remove(self.disable_initiator_tag)

1579

self.disable_initiator_tag = (

1580

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1588

self.disable_initiator_tag = gobject.timeout_add(

1589

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

1590

self.disable)

1583

1591

1584

1592

# ExtendedTimeout - property

1585

@dbus_service_property(_interface, signature="t",

1593

@dbus_service_property(_interface,

1594

signature="t",

1586

1595

access="readwrite")

1587

1596

def ExtendedTimeout_dbus_property(self, value=None):

1588

1597

if value is None: # get

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

1598

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

1599

* 1000)

1590

1600

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

1591

1601

1592

1602

# Interval - property

1593

@dbus_service_property(_interface, signature="t",

1603

@dbus_service_property(_interface,

1604

signature="t",

1594

1605

access="readwrite")

1595

1606

def Interval_dbus_property(self, value=None):

1596

1607

if value is None: # get

1597

return dbus.UInt64(self.interval_milliseconds())

1608

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

1598

1609

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

1599

1610

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

1600

1611

return

1601

1612

if self.enabled:

1602

1613

# Reschedule checker run

1603

1614

gobject.source_remove(self.checker_initiator_tag)

1604

self.checker_initiator_tag = (gobject.timeout_add

1605

(value, self.start_checker))

1606

self.start_checker() # Start one now, too

1615

self.checker_initiator_tag = gobject.timeout_add(

1616

value, self.start_checker)

1617

self.start_checker() # Start one now, too

1607

1618

1608

1619

# Checker - property

1609

@dbus_service_property(_interface, signature="s",

1620

@dbus_service_property(_interface,

1621

signature="s",

1610

1622

access="readwrite")

1611

1623

def Checker_dbus_property(self, value=None):

1612

1624

if value is None: # get

1613

1625

return dbus.String(self.checker_command)

1614

self.checker_command = unicode(value)

1626

self.checker_command = str(value)

1615

1627

1616

1628

# CheckerRunning - property

1617

@dbus_service_property(_interface, signature="b",

1629

@dbus_service_property(_interface,

1630

signature="b",

1618

1631

access="readwrite")

1619

1632

def CheckerRunning_dbus_property(self, value=None):

1620

1633

if value is None: # get

1630

1643

return self.dbus_object_path # is already a dbus.ObjectPath

1631

1644

1632

1645

# Secret = property

1633

@dbus_service_property(_interface, signature="ay",

1634

access="write", byte_arrays=True)

1646

@dbus_service_property(_interface,

1647

signature="ay",

1648

access="write",

1649

byte_arrays=True)

1635

1650

def Secret_dbus_property(self, value):

1636

self.secret = str(value)

1651

self.secret = bytes(value)

1637

1652

1638

1653

del _interface

1639

1654

1653

1668

if data[0] == 'data':

1654

1669

return data[1]

1655

1670

if data[0] == 'function':

1671

1656

1672

def func(*args, **kwargs):

1657

1673

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

1658

1674

return self._pipe.recv()[1]

1675

1659

1676

return func

1660

1677

1661

1678

def __setattr__(self, name, value):

1673

1690

def handle(self):

1674

1691

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

1675

1692

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

1676

unicode(self.client_address))

1693

str(self.client_address))

1677

1694

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

1678

1695

self.server.child_pipe.fileno())

1679

1696

1680

session = (gnutls.connection

1681

.ClientSession(self.request,

1682

gnutls.connection

1683

.X509Credentials()))

1697

session = gnutls.connection.ClientSession(

1698

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

1684

1699

1685

1700

# Note: gnutls.connection.X509Credentials is really a

1686

1701

# generic GnuTLS certificate credentials object so long as

1695

1710

priority = self.server.gnutls_priority

1696

1711

if priority is None:

1697

1712

priority = "NORMAL"

1698

(gnutls.library.functions

1699

.gnutls_priority_set_direct(session._c_object,

1700

priority, None))

1713

gnutls.library.functions.gnutls_priority_set_direct(

1714

session._c_object, priority, None)

1701

1715

1702

1716

# Start communication using the Mandos protocol

1703

1717

# Get protocol number

1723

1737

approval_required = False

1724

1738

try:

1725

1739

try:

1726

fpr = self.fingerprint(self.peer_certificate

1727

(session))

1740

fpr = self.fingerprint(

1741

self.peer_certificate(session))

1728

1742

except (TypeError,

1729

1743

gnutls.errors.GNUTLSError) as error:

1730

1744

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

1745

1759

while True:

1746

1760

if not client.enabled:

1747

1761

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

1748

client.name)

1762

client.name)

1749

1763

if self.server.use_dbus:

1750

1764

# Emit D-Bus signal

1751

1765

client.Rejected("Disabled")

1760

1774

if self.server.use_dbus:

1761

1775

# Emit D-Bus signal

1762

1776

client.NeedApproval(

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

1777

client.approval_delay.total_seconds()

1778

* 1000, client.approved_by_default)

1765

1779

else:

1766

1780

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

1767

1781

client.name)

1773

1787

#wait until timeout or approved

1774

1788

time = datetime.datetime.now()

1775

1789

client.changedstate.acquire()

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

1790

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

1779

1791

client.changedstate.release()

1780

1792

time2 = datetime.datetime.now()

1781

1793

if (time2 - time) >= delay:

1800

1812

logger.warning("gnutls send failed",

1801

1813

exc_info=error)

1802

1814

return

1803

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

1804

sent, len(client.secret)

1805

- (sent_size + sent))

1815

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

1816

len(client.secret) - (sent_size

1817

+ sent))

1806

1818

sent_size += sent

1807

1819

1808

1820

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

1825

1837

def peer_certificate(session):

1826

1838

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

1827

1839

# If not an OpenPGP certificate...

1828

if (gnutls.library.functions

1829

.gnutls_certificate_type_get(session._c_object)

1840

if (gnutls.library.functions.gnutls_certificate_type_get(

1841

session._c_object)

1830

1842

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1831

1843

# ...do the normal thing

1832

1844

return session.peer_certificate

1846

1858

def fingerprint(openpgp):

1847

1859

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1848

1860

# New GnuTLS "datum" with the OpenPGP public key

1849

datum = (gnutls.library.types

1850

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

1851

ctypes.POINTER

1852

(ctypes.c_ubyte)),

1853

ctypes.c_uint(len(openpgp))))

1861

datum = gnutls.library.types.gnutls_datum_t(

1862

ctypes.cast(ctypes.c_char_p(openpgp),

1863

ctypes.POINTER(ctypes.c_ubyte)),

1864

ctypes.c_uint(len(openpgp)))

1854

1865

# New empty GnuTLS certificate

1855

1866

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1867

gnutls.library.functions.gnutls_openpgp_crt_init(

1868

ctypes.byref(crt))

1858

1869

# Import the OpenPGP public key into the certificate

1859

(gnutls.library.functions

1860

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

1861

gnutls.library.constants

1862

.GNUTLS_OPENPGP_FMT_RAW))

1870

gnutls.library.functions.gnutls_openpgp_crt_import(

1871

crt, ctypes.byref(datum),

1872

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1863

1873

# Verify the self signature in the key

1864

1874

crtverify = ctypes.c_uint()

1865

(gnutls.library.functions

1866

.gnutls_openpgp_crt_verify_self(crt, 0,

1867

ctypes.byref(crtverify)))

1875

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1876

crt, 0, ctypes.byref(crtverify))

1868

1877

if crtverify.value != 0:

1869

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1870

raise (gnutls.errors.CertificateSecurityError

1871

("Verify failed"))

1879

raise gnutls.errors.CertificateSecurityError(

1880

"Verify failed")

1872

1881

# New buffer for the fingerprint

1873

1882

buf = ctypes.create_string_buffer(20)

1874

1883

buf_len = ctypes.c_size_t()

1875

1884

# Get the fingerprint from the certificate into the buffer

1876

(gnutls.library.functions

1877

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

1878

ctypes.byref(buf_len)))

1885

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1886

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

1879

1887

# Deinit the certificate

1880

1888

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1881

1889

# Convert the buffer to a Python bytestring

1887

1895

1888

1896

class MultiprocessingMixIn(object):

1889

1897

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

1898

1890

1899

def sub_process_main(self, request, address):

1891

1900

try:

1892

1901

self.finish_request(request, address)

1904

1913

1905

1914

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1906

1915

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

1916

1907

1917

def process_request(self, request, client_address):

1908

1918

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

1909

1919

1930

1940

interface: None or a network interface name (string)

1931

1941

use_ipv6: Boolean; to use IPv6 or not

1932

1942

"""

1943

1933

1944

def __init__(self, server_address, RequestHandlerClass,

1934

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

1945

interface=None,

1946

use_ipv6=True,

1947

socketfd=None):

1935

1948

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

1936

1949

creating a new one with socket.socket().

1937

1950

"""

1978

1991

self.interface)

1979

1992

else:

1980

1993

try:

1981

self.socket.setsockopt(socket.SOL_SOCKET,

1982

SO_BINDTODEVICE,

1983

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

1994

self.socket.setsockopt(

1995

socket.SOL_SOCKET, SO_BINDTODEVICE,

1996

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

1984

1997

except socket.error as error:

1985

1998

if error.errno == errno.EPERM:

1986

1999

logger.error("No permission to bind to"

2004

2017

self.server_address = (any_address,

2005

2018

self.server_address[1])

2006

2019

elif not self.server_address[1]:

2007

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

2008

0)

2020

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

2009

2021

# if self.interface:

2010

2022

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

2011

2023

# 0, # port

2025

2037

2026

2038

Assumes a gobject.MainLoop event loop.

2027

2039

"""

2040

2028

2041

def __init__(self, server_address, RequestHandlerClass,

2029

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

2030

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

2042

interface=None,

2043

use_ipv6=True,

2044

clients=None,

2045

gnutls_priority=None,

2046

use_dbus=True,

2047

socketfd=None):

2031

2048

self.enabled = False

2032

2049

self.clients = clients

2033

2050

if self.clients is None:

2039

2056

interface = interface,

2040

2057

use_ipv6 = use_ipv6,

2041

2058

socketfd = socketfd)

2059

2042

2060

def server_activate(self):

2043

2061

if self.enabled:

2044

2062

return socketserver.TCPServer.server_activate(self)

2048

2066

2049

2067

def add_pipe(self, parent_pipe, proc):

2050

2068

# Call "handle_ipc" for both data and EOF events

2051

gobject.io_add_watch(parent_pipe.fileno(),

2052

gobject.IO_IN | gobject.IO_HUP,

2053

functools.partial(self.handle_ipc,

2054

parent_pipe =

2055

parent_pipe,

2056

proc = proc))

2069

gobject.io_add_watch(

2070

parent_pipe.fileno(),

2071

gobject.IO_IN | gobject.IO_HUP,

2072

functools.partial(self.handle_ipc,

2073

parent_pipe = parent_pipe,

2074

proc = proc))

2057

2075

2058

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

2059

proc = None, client_object=None):

2076

def handle_ipc(self, source, condition,

2077

parent_pipe=None,

2078

proc = None,

2079

client_object=None):

2060

2080

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

2061

2081

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

2062

2082

# Wait for other process to exit

2085

2105

parent_pipe.send(False)

2086

2106

return False

2087

2107

2088

gobject.io_add_watch(parent_pipe.fileno(),

2089

gobject.IO_IN | gobject.IO_HUP,

2090

functools.partial(self.handle_ipc,

2091

parent_pipe =

2092

parent_pipe,

2093

proc = proc,

2094

client_object =

2095

client))

2108

gobject.io_add_watch(

2109

parent_pipe.fileno(),

2110

gobject.IO_IN | gobject.IO_HUP,

2111

functools.partial(self.handle_ipc,

2112

parent_pipe = parent_pipe,

2113

proc = proc,

2114

client_object = client))

2096

2115

parent_pipe.send(True)

2097

2116

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

2098

2117

# same fileno

2104

2123

2105

2124

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

2106

2125

funcname)(*args,

2107

**kwargs)))

2126

**kwargs)))

2108

2127

2109

2128

if command == 'getattr':

2110

2129

attrname = request[1]

2111

2130

if callable(client_object.__getattribute__(attrname)):

2112

parent_pipe.send(('function',))

2131

parent_pipe.send(('function', ))

2113

2132

else:

2114

parent_pipe.send(('data', client_object

2115

.__getattribute__(attrname)))

2133

parent_pipe.send((

2134

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

2116

2135

2117

2136

if command == 'setattr':

2118

2137

attrname = request[1]

2158

2177

# None

2159

2178

"followers")) # Tokens valid after

2160

2179

# this token

2180

Token = collections.namedtuple("Token", (

2181

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

2182

# a "group" containing digits

2183

"value", # datetime.timedelta or None

2184

"followers")) # Tokens valid after this token

2161

2185

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

2162

2186

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

2163

2187

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

2164

2188

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

2165

2189

datetime.timedelta(seconds=1),

2166

frozenset((token_end,)))

2190

frozenset((token_end, )))

2167

2191

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

2168

2192

datetime.timedelta(minutes=1),

2169

2193

frozenset((token_second, token_end)))

2185

2209

frozenset((token_month, token_end)))

2186

2210

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

2187

2211

datetime.timedelta(weeks=1),

2188

frozenset((token_end,)))

2212

frozenset((token_end, )))

2189

2213

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

2190

2214

frozenset((token_year, token_month,

2191

2215

token_day, token_time,

2192

token_week))),

2216

token_week)))

2193

2217

# Define starting values

2194

2218

value = datetime.timedelta() # Value so far

2195

2219

found_token = None

2196

followers = frozenset(token_duration,) # Following valid tokens

2220

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

2197

2221

s = duration # String left to parse

2198

2222

# Loop until end token is found

2199

2223

while found_token is not token_end:

2246

2270

timevalue = datetime.timedelta(0)

2247

2271

for s in interval.split():

2248

2272

try:

2249

suffix = unicode(s[-1])

2273

suffix = s[-1]

2250

2274

value = int(s[:-1])

2251

2275

if suffix == "d":

2252

2276

delta = datetime.timedelta(value)

2259

2283

elif suffix == "w":

2260

2284

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

2261

2285

else:

2262

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

2263

.format(suffix))

2286

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

2264

2287

except IndexError as e:

2265

2288

raise ValueError(*(e.args))

2266

2289

timevalue += delta

2283

2306

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

2284

2307

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

2285

2308

raise OSError(errno.ENODEV,

2286

"{0} not a character device"

2309

"{} not a character device"

2287

2310

.format(os.devnull))

2288

2311

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

2289

2312

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

2299

2322

2300

2323

parser = argparse.ArgumentParser()

2301

2324

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

2302

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

2325

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

2303

2326

help="show version number and exit")

2304

2327

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

2305

2328

help="Bind to interface IF")

2338

2361

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

2339

2362

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

2340

2363

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

2364

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

2365

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

2366

default=None)

2341

2367

2342

2368

options = parser.parse_args()

2343

2369

2352

2378

"port": "",

2353

2379

"debug": "False",

2354

2380

"priority":

2355

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

2381

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

2382

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

2356

2383

"servicename": "Mandos",

2357

2384

"use_dbus": "True",

2358

2385

"use_ipv6": "True",

2361

2388

"socket": "",

2362

2389

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

2363

2390

"foreground": "False",

2364

}

2391

"zeroconf": "True",

2392

}

2365

2393

2366

2394

# Parse config file for server-global settings

2367

2395

server_config = configparser.SafeConfigParser(server_defaults)

2368

2396

del server_defaults

2369

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

2370

"mandos.conf"))

2397

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

2371

2398

# Convert the SafeConfigParser object to a dict

2372

2399

server_settings = server_config.defaults()

2373

2400

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

2391

2418

# Override the settings from the config file with command line

2392

2419

# options, if set.

2393

2420

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

2394

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

2395

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

2396

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

2421

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

2422

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

2423

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

2397

2424

value = getattr(options, option)

2398

2425

if value is not None:

2399

2426

server_settings[option] = value

2400

2427

del options

2401

2428

# Force all strings to be unicode

2402

2429

for option in server_settings.keys():

2403

if type(server_settings[option]) is str:

2404

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

2430

if isinstance(server_settings[option], bytes):

2431

server_settings[option] = (server_settings[option]

2432

.decode("utf-8"))

2405

2433

# Force all boolean options to be boolean

2406

2434

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

2407

"foreground"):

2435

"foreground", "zeroconf"):

2408

2436

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

2409

2437

# Debug implies foreground

2410

2438

if server_settings["debug"]:

2413

2441

2414

2442

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

2415

2443

2444

if (not server_settings["zeroconf"]

2445

and not (server_settings["port"]

2446

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

2447

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

2448

2416

2449

# For convenience

2417

2450

debug = server_settings["debug"]

2418

2451

debuglevel = server_settings["debuglevel"]

2421

2454

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

2422

2455

stored_state_file)

2423

2456

foreground = server_settings["foreground"]

2457

zeroconf = server_settings["zeroconf"]

2424

2458

2425

2459

if debug:

2426

2460

initlogger(debug, logging.DEBUG)

2432

2466

initlogger(debug, level)

2433

2467

2434

2468

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

2435

syslogger.setFormatter(logging.Formatter

2436

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

2437

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

2438

.format(server_settings

2439

["servicename"])))

2469

syslogger.setFormatter(

2470

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

2471

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

2472

server_settings["servicename"])))

2440

2473

2441

2474

# Parse config file with clients

2442

2475

client_config = configparser.SafeConfigParser(Client

2447

2480

global mandos_dbus_service

2448

2481

mandos_dbus_service = None

2449

2482

2450

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

2451

server_settings["port"]),

2452

ClientHandler,

2453

interface=(server_settings["interface"]

2454

or None),

2455

use_ipv6=use_ipv6,

2456

gnutls_priority=

2457

server_settings["priority"],

2458

use_dbus=use_dbus,

2459

socketfd=(server_settings["socket"]

2460

or None))

2483

socketfd = None

2484

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

2485

socketfd = server_settings["socket"]

2486

tcp_server = MandosServer(

2487

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

2488

ClientHandler,

2489

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

2490

use_ipv6=use_ipv6,

2491

gnutls_priority=server_settings["priority"],

2492

use_dbus=use_dbus,

2493

socketfd=socketfd)

2461

2494

if not foreground:

2462

2495

pidfilename = "/run/mandos.pid"

2463

2496

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

2497

2530

def debug_gnutls(level, string):

2498

2531

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

2499

2532

2500

(gnutls.library.functions

2501

.gnutls_global_set_log_function(debug_gnutls))

2533

gnutls.library.functions.gnutls_global_set_log_function(

2534

debug_gnutls)

2502

2535

2503

2536

# Redirect stdin so all checkers get /dev/null

2504

2537

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

2524

2557

if use_dbus:

2525

2558

try:

2526

2559

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

2527

bus, do_not_queue=True)

2528

old_bus_name = (dbus.service.BusName

2529

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

2530

do_not_queue=True))

2560

bus,

2561

do_not_queue=True)

2562

old_bus_name = dbus.service.BusName(

2563

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

2564

do_not_queue=True)

2531

2565

except dbus.exceptions.NameExistsException as e:

2532

2566

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

2533

2567

use_dbus = False

2534

2568

server_settings["use_dbus"] = False

2535

2569

tcp_server.use_dbus = False

2536

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2537

service = AvahiServiceToSyslog(name =

2538

server_settings["servicename"],

2539

servicetype = "_mandos._tcp",

2540

protocol = protocol, bus = bus)

2541

if server_settings["interface"]:

2542

service.interface = (if_nametoindex

2543

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

2570

if zeroconf:

2571

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2572

service = AvahiServiceToSyslog(

2573

name = server_settings["servicename"],

2574

servicetype = "_mandos._tcp",

2575

protocol = protocol,

2576

bus = bus)

2577

if server_settings["interface"]:

2578

service.interface = if_nametoindex(

2579

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

2544

2580

2545

2581

global multiprocessing_manager

2546

2582

multiprocessing_manager = multiprocessing.Manager()

2565

2601

if server_settings["restore"]:

2566

2602

try:

2567

2603

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

2568

clients_data, old_client_settings = (pickle.load

2569

(stored_state))

2604

clients_data, old_client_settings = pickle.load(

2605

stored_state)

2570

2606

os.remove(stored_state_path)

2571

2607

except IOError as e:

2572

2608

if e.errno == errno.ENOENT:

2573

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

2574

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

2609

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

2610

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

2575

2611

else:

2576

2612

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

2577

2613

exc_info=e)

2578

2614

raise

2579

2615

except EOFError as e:

2580

2616

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

2581

"EOFError:", exc_info=e)

2617

"EOFError:",

2618

exc_info=e)

2582

2619

2583

2620

with PGPEngine() as pgp:

2584

for client_name, client in clients_data.iteritems():

2621

for client_name, client in clients_data.items():

2585

2622

# Skip removed clients

2586

2623

if client_name not in client_settings:

2587

2624

continue

2596

2633

# For each value in new config, check if it

2597

2634

# differs from the old config value (Except for

2598

2635

# the "secret" attribute)

2599

if (name != "secret" and

2600

value != old_client_settings[client_name]

2601

[name]):

2636

if (name != "secret"

2637

and (value !=

2638

old_client_settings[client_name][name])):

2602

2639

client[name] = value

2603

2640

except KeyError:

2604

2641

pass

2605

2642

2606

2643

# Clients who has passed its expire date can still be

2607

# enabled if its last checker was successful. Clients

2644

# enabled if its last checker was successful. A Client

2608

2645

# whose checker succeeded before we stored its state is

2609

2646

# assumed to have successfully run all checkers during

2610

2647

# downtime.

2612

2649

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

2613

2650

if not client["last_checked_ok"]:

2614

2651

logger.warning(

2615

"disabling client {0} - Client never "

2616

"performed a successful checker"

2617

.format(client_name))

2652

"disabling client {} - Client never "

2653

"performed a successful checker".format(

2654

client_name))

2618

2655

client["enabled"] = False

2619

2656

elif client["last_checker_status"] != 0:

2620

2657

logger.warning(

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2623

.format(client_name,

2624

client["last_checker_status"]))

2658

"disabling client {} - Client last"

2659

" checker failed with error code"

2660

" {}".format(

2661

client_name,

2662

client["last_checker_status"]))

2625

2663

client["enabled"] = False

2626

2664

else:

2627

client["expires"] = (datetime.datetime

2628

.utcnow()

2629

+ client["timeout"])

2665

client["expires"] = (

2666

datetime.datetime.utcnow()

2667

+ client["timeout"])

2630

2668

logger.debug("Last checker succeeded,"

2631

" keeping {0} enabled"

2632

.format(client_name))

2669

" keeping {} enabled".format(

2670

client_name))

2633

2671

try:

2634

client["secret"] = (

2635

pgp.decrypt(client["encrypted_secret"],

2636

client_settings[client_name]

2637

["secret"]))

2672

client["secret"] = pgp.decrypt(

2673

client["encrypted_secret"],

2674

client_settings[client_name]["secret"])

2638

2675

except PGPError:

2639

2676

# If decryption fails, we use secret from new settings

2640

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

2641

.format(client_name))

2642

client["secret"] = (

2643

client_settings[client_name]["secret"])

2677

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

2678

client_name))

2679

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

2680

["secret"])

2644

2681

2645

2682

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

2646

2683

for client_name in (set(old_client_settings)

2651

2688

clients_data[client_name] = client_settings[client_name]

2652

2689

2653

2690

# Create all client objects

2654

for client_name, client in clients_data.iteritems():

2691

for client_name, client in clients_data.items():

2655

2692

tcp_server.clients[client_name] = client_class(

2656

name = client_name, settings = client,

2693

name = client_name,

2694

settings = client,

2657

2695

server_settings = server_settings)

2658

2696

2659

2697

if not tcp_server.clients:

2664

2702

try:

2665

2703

with pidfile:

2666

2704

pid = os.getpid()

2667

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

2705

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

2668

2706

except IOError:

2669

2707

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

2670

2708

pidfilename, pid)

2675

2713

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

2676

2714

2677

2715

if use_dbus:

2678

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

2679

"se.bsnet.fukt.Mandos"})

2716

2717

@alternate_dbus_interfaces(

2718

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

2680

2719

class MandosDBusService(DBusObjectWithProperties):

2681

2720

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

2721

2682

2722

def __init__(self):

2683

2723

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

2724

2684

2725

_interface = "se.recompile.Mandos"

2685

2726

2686

2727

@dbus_interface_annotations(_interface)

2687

2728

def _foo(self):

2688

return { "org.freedesktop.DBus.Property"

2689

".EmitsChangedSignal":

2690

"false"}

2729

return {

2730

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

2731

"false" }

2691

2732

2692

2733

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

2693

2734

def ClientAdded(self, objpath):

2707

2748

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

2708

2749

def GetAllClients(self):

2709

2750

"D-Bus method"

2710

return dbus.Array(c.dbus_object_path

2711

for c in

2751

return dbus.Array(c.dbus_object_path for c in

2712

2752

tcp_server.clients.itervalues())

2713

2753

2714

2754

@dbus.service.method(_interface,

2716

2756

def GetAllClientsWithProperties(self):

2717

2757

"D-Bus method"

2718

2758

return dbus.Dictionary(

2719

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

2720

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

2759

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

2760

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

2721

2761

signature="oa{sv}")

2722

2762

2723

2763

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

2740

2780

2741

2781

def cleanup():

2742

2782

"Cleanup function; run on exit"

2743

service.cleanup()

2783

if zeroconf:

2784

service.cleanup()

2744

2785

2745

2786

multiprocessing.active_children()

2746

2787

wnull.close()

2760

2801

2761

2802

# A list of attributes that can not be pickled

2762

2803

# + secret.

2763

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

2764

"checker", "server_settings"))

2765

for name, typ in (inspect.getmembers

2766

(dbus.service.Object)):

2804

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

2805

"checker", "server_settings" }

2806

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

2807

.Object):

2767

2808

exclude.add(name)

2768

2809

2769

2810

client_dict["encrypted_secret"] = (client

2776

2817

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

2777

2818

2778

2819

try:

2779

with (tempfile.NamedTemporaryFile

2780

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

2781

dir=os.path.dirname(stored_state_path),

2782

delete=False)) as stored_state:

2820

with tempfile.NamedTemporaryFile(

2821

mode='wb',

2822

suffix=".pickle",

2823

prefix='clients-',

2824

dir=os.path.dirname(stored_state_path),

2825

delete=False) as stored_state:

2783

2826

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

2784

tempname=stored_state.name

2827

tempname = stored_state.name

2785

2828

os.rename(tempname, stored_state_path)

2786

2829

except (IOError, OSError) as e:

2787

2830

if not debug:

2790

2833

except NameError:

2791

2834

pass

2792

2835

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

2793

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

2836

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

2794

2837

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

2795

2838

else:

2796

2839

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

2806

2849

client.disable(quiet=True)

2807

2850

if use_dbus:

2808

2851

# Emit D-Bus signal

2809

mandos_dbus_service.ClientRemoved(client

2810

.dbus_object_path,

2811

client.name)

2852

mandos_dbus_service.ClientRemoved(

2853

client.dbus_object_path, client.name)

2812

2854

client_settings.clear()

2813

2855

2814

2856

atexit.register(cleanup)

2825

2867

tcp_server.server_activate()

2826

2868

2827

2869

# Find out what port we got

2828

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

2870

if zeroconf:

2871

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

2829

2872

if use_ipv6:

2830

2873

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

2831

2874

" flowinfo %d, scope_id %d",

2837

2880

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

2838

2881

2839

2882

try:

2840

# From the Avahi example code

2841

try:

2842

service.activate()

2843

except dbus.exceptions.DBusException as error:

2844

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

2845

cleanup()

2846

sys.exit(1)

2847

# End of Avahi example code

2883

if zeroconf:

2884

# From the Avahi example code

2885

try:

2886

service.activate()

2887

except dbus.exceptions.DBusException as error:

2888

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

2889

cleanup()

2890

sys.exit(1)

2891

# End of Avahi example code

2848

2892

2849

2893

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

2850

2894

lambda *args, **kwargs:

2865

2909

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

2866

2910

cleanup()

2867

2911

2912

2868

2913

if __name__ == '__main__':

2869

2914

main()