/mandos/release : revision 237.7.242

1

#!/usr/bin/python2.7

1

#!/usr/bin/python

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

try:

40

import SocketServer as socketserver

41

except ImportError:

42

import socketserver

39

import SocketServer as socketserver

43

40

import socket

44

41

import argparse

45

42

import datetime

50

47

import gnutls.library.functions

51

48

import gnutls.library.constants

52

49

import gnutls.library.types

53

try:

54

import ConfigParser as configparser

55

except ImportError:

56

import configparser

50

import ConfigParser as configparser

57

51

import sys

58

52

import re

59

53

import os

68

62

import struct

69

63

import fcntl

70

64

import functools

71

try:

72

import cPickle as pickle

73

except ImportError:

74

import pickle

65

import cPickle as pickle

75

66

import multiprocessing

76

67

import types

77

68

import binascii

81

72

82

73

import dbus

83

74

import dbus.service

84

try:

85

import gobject

86

except ImportError:

87

from gi.repository import GObject as gobject

75

import gobject

88

76

import avahi

89

77

from dbus.mainloop.glib import DBusGMainLoop

90

78

import ctypes

100

88

except ImportError:

101

89

SO_BINDTODEVICE = None

102

90

103

if sys.version_info.major == 2:

104

str = unicode

105

106

version = "1.6.9"

91

version = "1.6.5"

107

92

stored_state_file = "clients.pickle"

108

93

109

94

logger = logging.getLogger()

110

95

syslogger = None

111

96

112

97

try:

113

if_nametoindex = ctypes.cdll.LoadLibrary(

114

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

98

if_nametoindex = (ctypes.cdll.LoadLibrary

99

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

100

.if_nametoindex)

115

101

except (OSError, AttributeError):

116

117

102

def if_nametoindex(interface):

118

103

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

119

104

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

120

105

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

121

106

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

122

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

123

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

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

124

111

return interface_index

125

112

126

113

127

114

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

128

115

"""init logger and add loglevel"""

129

116

130

global syslogger

131

syslogger = (logging.handlers.SysLogHandler(

132

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

133

address = "/dev/log"))

117

syslogger = (logging.handlers.SysLogHandler

118

(facility =

119

logging.handlers.SysLogHandler.LOG_DAEMON,

120

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

134

121

syslogger.setFormatter(logging.Formatter

135

122

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

136

123

' %(message)s'))

153

140

154

141

class PGPEngine(object):

155

142

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

156

157

143

def __init__(self):

158

144

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

159

145

self.gnupgargs = ['--batch',

198

184

199

185

def encrypt(self, data, password):

200

186

passphrase = self.password_encode(password)

201

with tempfile.NamedTemporaryFile(

202

dir=self.tempdir) as passfile:

187

with tempfile.NamedTemporaryFile(dir=self.tempdir

188

) as passfile:

203

189

passfile.write(passphrase)

204

190

passfile.flush()

205

191

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

216

202

217

203

def decrypt(self, data, password):

218

204

passphrase = self.password_encode(password)

219

with tempfile.NamedTemporaryFile(

220

dir = self.tempdir) as passfile:

205

with tempfile.NamedTemporaryFile(dir = self.tempdir

206

) as passfile:

221

207

passfile.write(passphrase)

222

208

passfile.flush()

223

209

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

227

213

stdin = subprocess.PIPE,

228

214

stdout = subprocess.PIPE,

229

215

stderr = subprocess.PIPE)

230

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

216

decrypted_plaintext, err = proc.communicate(input

217

= data)

231

218

if proc.returncode != 0:

232

219

raise PGPError(err)

233

220

return decrypted_plaintext

236

223

class AvahiError(Exception):

237

224

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

238

225

self.value = value

239

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

240

**kwargs)

241

226

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

227

def __unicode__(self):

228

return unicode(repr(self.value))

242

229

243

230

class AvahiServiceError(AvahiError):

244

231

pass

245

232

246

247

233

class AvahiGroupError(AvahiError):

248

234

pass

249

235

269

255

bus: dbus.SystemBus()

270

256

"""

271

257

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):

258

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

259

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

260

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

261

protocol = avahi.PROTO_UNSPEC, bus = None):

283

262

self.interface = interface

284

263

self.name = name

285

264

self.type = servicetype

295

274

self.bus = bus

296

275

self.entry_group_state_changed_match = None

297

276

298

def rename(self, remove=True):

277

def rename(self):

299

278

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

300

279

if self.rename_count >= self.max_renames:

301

280

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

302

281

" after %i retries, exiting.",

303

282

self.rename_count)

304

283

raise AvahiServiceError("Too many renames")

305

self.name = str(

306

self.server.GetAlternativeServiceName(self.name))

307

self.rename_count += 1

284

self.name = unicode(self.server

285

.GetAlternativeServiceName(self.name))

308

286

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

309

287

self.name)

310

if remove:

311

self.remove()

288

self.remove()

312

289

try:

313

290

self.add()

314

291

except dbus.exceptions.DBusException as error:

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)

292

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

293

self.cleanup()

294

os._exit(1)

295

self.rename_count += 1

323

296

324

297

def remove(self):

325

298

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

363

336

self.rename()

364

337

elif state == avahi.ENTRY_GROUP_FAILURE:

365

338

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

366

str(error))

367

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

339

unicode(error))

340

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

341

.format(error))

368

342

369

343

def cleanup(self):

370

344

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

380

354

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

381

355

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

382

356

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

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

}

357

bad_states = { avahi.SERVER_INVALID:

358

"Zeroconf server invalid",

359

avahi.SERVER_REGISTERING: None,

360

avahi.SERVER_COLLISION:

361

"Zeroconf server name collision",

362

avahi.SERVER_FAILURE:

363

"Zeroconf server failure" }

389

364

if state in bad_states:

390

365

if bad_states[state] is not None:

391

366

if error is None:

410

385

follow_name_owner_changes=True),

411

386

avahi.DBUS_INTERFACE_SERVER)

412

387

self.server.connect_to_signal("StateChanged",

413

self.server_state_changed)

388

self.server_state_changed)

414

389

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

415

390

416

391

417

392

class AvahiServiceToSyslog(AvahiService):

418

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

393

def rename(self):

419

394

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

420

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

421

syslogger.setFormatter(logging.Formatter(

422

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

423

.format(self.name)))

395

ret = AvahiService.rename(self)

396

syslogger.setFormatter(logging.Formatter

397

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

398

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

399

.format(self.name)))

424

400

return ret

425

401

426

def call_pipe(connection, # : multiprocessing.Connection

427

func, *args, **kwargs):

428

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

429

430

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

431

return value on the provided multiprocessing.Connection.

432

"""

433

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

434

connection.close()

402

403

def timedelta_to_milliseconds(td):

404

"Convert a datetime.timedelta() to milliseconds"

405

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

406

+ (td.seconds * 1000)

407

+ (td.microseconds // 1000))

408

435

409

436

410

class Client(object):

437

411

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

464

438

last_checker_status: integer between 0 and 255 reflecting exit

465

439

status of last checker. -1 reflects crashed

466

440

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

469

441

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

470

442

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

471

443

D-Bus identifiers

484

456

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

485

457

"last_approval_request", "last_checked_ok",

486

458

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

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

}

459

client_defaults = { "timeout": "PT5M",

460

"extended_timeout": "PT15M",

461

"interval": "PT2M",

462

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

463

"host": "",

464

"approval_delay": "PT0S",

465

"approval_duration": "PT1S",

466

"approved_by_default": "True",

467

"enabled": "True",

468

}

469

470

def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

473

474

def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

477

478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

498

484

499

485

@staticmethod

500

486

def config_parser(config):

516

502

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

517

503

"enabled")

518

504

519

# Uppercase and remove spaces from fingerprint for later

520

# comparison purposes with return value from the

521

# fingerprint() function

522

505

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

523

506

.replace(" ", ""))

524

507

if "secret" in section:

529

512

"rb") as secfile:

530

513

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

531

514

else:

532

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

515

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

533

516

.format(section))

534

517

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

535

518

client["extended_timeout"] = string_to_delta(

552

535

server_settings = {}

553

536

self.server_settings = server_settings

554

537

# adding all client settings

555

for setting, value in settings.items():

538

for setting, value in settings.iteritems():

556

539

setattr(self, setting, value)

557

540

558

541

if self.enabled:

566

549

self.expires = None

567

550

568

551

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

552

# Uppercase and remove spaces from fingerprint for later

553

# comparison purposes with return value from the fingerprint()

554

# function

569

555

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

570

556

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

571

557

datetime.datetime.utcnow())

578

564

self.current_checker_command = None

579

565

self.approved = None

580

566

self.approvals_pending = 0

581

self.changedstate = multiprocessing_manager.Condition(

582

multiprocessing_manager.Lock())

583

self.client_structure = [attr

584

for attr in self.__dict__.iterkeys()

567

self.changedstate = (multiprocessing_manager

568

.Condition(multiprocessing_manager

569

.Lock()))

570

self.client_structure = [attr for attr in

571

self.__dict__.iterkeys()

585

572

if not attr.startswith("_")]

586

573

self.client_structure.append("client_structure")

587

574

588

for name, t in inspect.getmembers(

589

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

575

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

576

lambda obj:

577

isinstance(obj,

578

property)):

590

579

if not name.startswith("_"):

591

580

self.client_structure.append(name)

592

581

634

623

# and every interval from then on.

635

624

if self.checker_initiator_tag is not None:

636

625

gobject.source_remove(self.checker_initiator_tag)

637

self.checker_initiator_tag = gobject.timeout_add(

638

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

639

self.start_checker)

626

self.checker_initiator_tag = (gobject.timeout_add

627

(self.interval_milliseconds(),

628

self.start_checker))

640

629

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

641

630

if self.disable_initiator_tag is not None:

642

631

gobject.source_remove(self.disable_initiator_tag)

643

self.disable_initiator_tag = gobject.timeout_add(

644

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

632

self.disable_initiator_tag = (gobject.timeout_add

633

(self.timeout_milliseconds(),

634

self.disable))

645

635

# Also start a new checker *right now*.

646

636

self.start_checker()

647

637

648

def checker_callback(self, source, condition,

649

(connection, command)):

638

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

650

639

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

651

640

self.checker_callback_tag = None

652

641

self.checker = None

653

# Read return code from connection (see 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

if os.WIFEXITED(condition):

643

self.last_checker_status = os.WEXITSTATUS(condition)

660

644

if self.last_checker_status == 0:

661

645

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

662

646

vars(self))

663

647

self.checked_ok()

664

648

else:

665

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

649

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

650

vars(self))

666

651

else:

667

652

self.last_checker_status = -1

668

self.last_checker_signal = -returncode

669

653

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

670

654

vars(self))

671

return False

672

655

673

656

def checked_ok(self):

674

657

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

675

658

self.last_checked_ok = datetime.datetime.utcnow()

676

659

self.last_checker_status = 0

677

self.last_checker_signal = None

678

660

self.bump_timeout()

679

661

680

662

def bump_timeout(self, timeout=None):

685

667

gobject.source_remove(self.disable_initiator_tag)

686

668

self.disable_initiator_tag = None

687

669

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

688

self.disable_initiator_tag = gobject.timeout_add(

689

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

670

self.disable_initiator_tag = (gobject.timeout_add

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

690

673

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

691

674

692

675

def need_approval(self):

706

689

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

707

690

# should be.

708

691

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

692

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

693

try:

694

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

695

except AttributeError:

696

pass

697

except OSError as error:

698

if error.errno != errno.ECHILD:

699

raise

700

else:

701

if pid:

702

logger.warning("Checker was a zombie")

703

gobject.source_remove(self.checker_callback_tag)

704

self.checker_callback(pid, status,

705

self.current_checker_command)

713

706

# Start a new checker if needed

714

707

if self.checker is None:

715

708

# Escape attributes for the shell

716

escaped_attrs = {

717

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

718

for attr in self.runtime_expansions }

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

719

713

try:

720

714

command = self.checker_command % escaped_attrs

721

715

except TypeError as error:

722

716

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

723

self.checker_command,

717

self.checker_command, exc_info=error)

718

return True # Try again later

719

self.current_checker_command = command

720

try:

721

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

722

command, self.name)

723

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

724

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

725

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

726

# always replaced by /dev/null.)

727

# The exception is when not debugging but nevertheless

728

# running in the foreground; use the previously

729

# created wnull.

730

popen_args = {}

731

if (not self.server_settings["debug"]

732

and self.server_settings["foreground"]):

733

popen_args.update({"stdout": wnull,

734

"stderr": wnull })

735

self.checker = subprocess.Popen(command,

736

close_fds=True,

737

shell=True, cwd="/",

738

**popen_args)

739

except OSError as error:

740

logger.error("Failed to start subprocess",

724

741

exc_info=error)

725

return True # Try again later

726

self.current_checker_command = 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 = call_pipe,

746

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

747

kwargs = popen_args)

748

self.checker.start()

749

self.checker_callback_tag = gobject.io_add_watch(

750

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

751

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

742

return True

743

self.checker_callback_tag = (gobject.child_watch_add

744

(self.checker.pid,

745

self.checker_callback,

746

data=command))

747

# The checker may have completed before the gobject

748

# watch was added. Check for this.

749

try:

750

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

751

except OSError as error:

752

if error.errno == errno.ECHILD:

753

# This should never happen

754

logger.error("Child process vanished",

755

exc_info=error)

756

return True

757

raise

758

if pid:

759

gobject.source_remove(self.checker_callback_tag)

760

self.checker_callback(pid, status, command)

752

761

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

753

762

return True

754

763

760

769

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

761

770

return

762

771

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

763

self.checker.terminate()

772

try:

773

self.checker.terminate()

774

#time.sleep(0.5)

775

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

776

# self.checker.kill()

777

except OSError as error:

778

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

779

raise

764

780

self.checker = None

765

781

766

782

767

def dbus_service_property(dbus_interface,

768

signature="v",

769

access="readwrite",

770

byte_arrays=False):

783

def dbus_service_property(dbus_interface, signature="v",

784

access="readwrite", byte_arrays=False):

771

785

"""Decorators for marking methods of a DBusObjectWithProperties to

772

786

become properties on the D-Bus.

773

787

782

796

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

783

797

if byte_arrays and signature != "ay":

784

798

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

785

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

786

799

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

787

800

def decorator(func):

788

801

func._dbus_is_property = True

789

802

func._dbus_interface = dbus_interface

794

807

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

795

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

796

809

return func

797

798

810

return decorator

799

811

800

812

809

821

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

810

822

"false"}

811

823

"""

812

813

824

def decorator(func):

814

825

func._dbus_is_interface = True

815

826

func._dbus_interface = dbus_interface

816

827

func._dbus_name = dbus_interface

817

828

return func

818

819

829

return decorator

820

830

821

831

823

833

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

824

834

Usage:

825

835

826

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

827

"org.freedesktop.DBus.Property."

828

"EmitsChangedSignal": "false"})

829

836

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

830

837

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

831

841

def Property_dbus_property(self):

832

842

return dbus.Boolean(False)

833

843

"""

834

835

844

def decorator(func):

836

845

func._dbus_annotations = annotations

837

846

return func

838

839

847

return decorator

840

848

841

849

842

850

class DBusPropertyException(dbus.exceptions.DBusException):

843

851

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

844

852

"""

845

pass

853

def __unicode__(self):

854

return unicode(str(self))

846

855

847

856

848

857

class DBusPropertyAccessException(DBusPropertyException):

872

881

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

873

882

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

874

883

"""

875

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

884

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

876

885

False)

877

886

878

887

def _get_all_dbus_things(self, thing):

879

888

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

880

889

"""

881

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

890

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

891

name),

882

892

athing.__get__(self))

883

893

for cls in self.__class__.__mro__

884

894

for name, athing in

885

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

895

inspect.getmembers(cls,

896

self._is_dbus_thing(thing)))

886

897

887

898

def _get_dbus_property(self, interface_name, property_name):

888

899

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

889

900

property with the specified name and interface.

890

901

"""

891

for cls in self.__class__.__mro__:

892

for name, value in inspect.getmembers(

893

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

902

for cls in self.__class__.__mro__:

903

for name, value in (inspect.getmembers

904

(cls,

905

self._is_dbus_thing("property"))):

894

906

if (value._dbus_name == property_name

895

907

and value._dbus_interface == interface_name):

896

908

return value.__get__(self)

897

909

898

910

# No such property

899

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

900

self.dbus_object_path, interface_name, property_name))

911

raise DBusPropertyNotFound(self.dbus_object_path + ":"

912

+ interface_name + "."

913

+ property_name)

901

914

902

@dbus.service.method(dbus.PROPERTIES_IFACE,

903

in_signature="ss",

915

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

904

916

out_signature="v")

905

917

def Get(self, interface_name, property_name):

906

918

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

925

937

# signatures other than "ay".

926

938

if prop._dbus_signature != "ay":

927

939

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

928

"'ay' signature {!r}"

940

"'ay' signature {0!r}"

929

941

.format(prop._dbus_signature))

930

942

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

931

943

for byte in value))

932

944

prop(value)

933

945

934

@dbus.service.method(dbus.PROPERTIES_IFACE,

935

in_signature="s",

946

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

936

947

out_signature="a{sv}")

937

948

def GetAll(self, interface_name):

938

949

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

953

964

if not hasattr(value, "variant_level"):

954

965

properties[name] = value

955

966

continue

956

properties[name] = type(value)(

957

value, variant_level = value.variant_level + 1)

967

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

968

value.variant_level+1)

958

969

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

959

970

960

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

961

def PropertiesChanged(self, interface_name, changed_properties,

962

invalidated_properties):

963

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

964

standard.

965

"""

966

pass

967

968

971

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

969

972

out_signature="s",

970

973

path_keyword='object_path',

978

981

connection)

979

982

try:

980

983

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

981

982

984

def make_tag(document, name, prop):

983

985

e = document.createElement("property")

984

986

e.setAttribute("name", name)

985

987

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

986

988

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

987

989

return e

988

989

990

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

990

991

# Add property tags

991

992

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

1003

1004

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

1004

1005

and prop._dbus_interface

1005

1006

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

1006

annots.update(getattr(

1007

prop, "_dbus_annotations", {}))

1008

for name, value in annots.items():

1007

annots.update(getattr

1008

(prop,

1009

"_dbus_annotations",

1010

{}))

1011

for name, value in annots.iteritems():

1009

1012

ann_tag = document.createElement(

1010

1013

"annotation")

1011

1014

ann_tag.setAttribute("name", name)

1014

1017

# Add interface annotation tags

1015

1018

for annotation, value in dict(

1016

1019

itertools.chain.from_iterable(

1017

annotations().items()

1018

for name, annotations

1019

in self._get_all_dbus_things("interface")

1020

annotations().iteritems()

1021

for name, annotations in

1022

self._get_all_dbus_things("interface")

1020

1023

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

1021

)).items():

1024

)).iteritems():

1022

1025

ann_tag = document.createElement("annotation")

1023

1026

ann_tag.setAttribute("name", annotation)

1024

1027

ann_tag.setAttribute("value", value)

1051

1054

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

1052

1055

if dt is None:

1053

1056

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

1054

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

1057

return dbus.String(dt.isoformat(),

1058

variant_level=variant_level)

1055

1059

1056

1060

1057

1061

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1077

1081

(from DBusObjectWithProperties) and interfaces (from the

1078

1082

dbus_interface_annotations decorator).

1079

1083

"""

1080

1081

1084

def wrapper(cls):

1082

1085

for orig_interface_name, alt_interface_name in (

1083

alt_interface_names.items()):

1086

alt_interface_names.iteritems()):

1084

1087

attr = {}

1085

1088

interface_names = set()

1086

1089

# Go though all attributes of the class

1088

1091

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

1089

1092

# with the wrong interface name

1090

1093

if (not hasattr(attribute, "_dbus_interface")

1091

or not attribute._dbus_interface.startswith(

1092

orig_interface_name)):

1094

or not attribute._dbus_interface

1095

.startswith(orig_interface_name)):

1093

1096

continue

1094

1097

# Create an alternate D-Bus interface name based on

1095

1098

# the current name

1096

alt_interface = attribute._dbus_interface.replace(

1097

orig_interface_name, alt_interface_name)

1099

alt_interface = (attribute._dbus_interface

1100

.replace(orig_interface_name,

1101

alt_interface_name))

1098

1102

interface_names.add(alt_interface)

1099

1103

# Is this a D-Bus signal?

1100

1104

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

1101

1105

# Extract the original non-method undecorated

1102

1106

# function by black magic

1103

1107

nonmethod_func = (dict(

1104

zip(attribute.func_code.co_freevars,

1105

attribute.__closure__))

1106

["func"].cell_contents)

1108

zip(attribute.func_code.co_freevars,

1109

attribute.__closure__))["func"]

1110

.cell_contents)

1107

1111

# Create a new, but exactly alike, function

1108

1112

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

1109

1113

# with the alternate D-Bus interface name

1110

new_function = (dbus.service.signal(

1111

alt_interface, attribute._dbus_signature)

1114

new_function = (dbus.service.signal

1115

(alt_interface,

1116

attribute._dbus_signature)

1112

1117

(types.FunctionType(

1113

nonmethod_func.func_code,

1114

nonmethod_func.func_globals,

1115

nonmethod_func.func_name,

1116

nonmethod_func.func_defaults,

1117

nonmethod_func.func_closure)))

1118

nonmethod_func.func_code,

1119

nonmethod_func.func_globals,

1120

nonmethod_func.func_name,

1121

nonmethod_func.func_defaults,

1122

nonmethod_func.func_closure)))

1118

1123

# Copy annotations, if any

1119

1124

try:

1120

new_function._dbus_annotations = dict(

1121

attribute._dbus_annotations)

1125

new_function._dbus_annotations = (

1126

dict(attribute._dbus_annotations))

1122

1127

except AttributeError:

1123

1128

pass

1124

1129

# Define a creator of a function to call both the

1129

1134

"""This function is a scope container to pass

1130

1135

func1 and func2 to the "call_both" function

1131

1136

outside of its arguments"""

1132

1133

1137

def call_both(*args, **kwargs):

1134

1138

"""This function will emit two D-Bus

1135

1139

signals by calling func1 and func2"""

1136

1140

func1(*args, **kwargs)

1137

1141

func2(*args, **kwargs)

1138

1139

1142

return call_both

1140

1143

# Create the "call_both" function and add it to

1141

1144

# the class

1146

1149

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

1147

1150

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

1148

1151

# to the class.

1149

attr[attrname] = (

1150

dbus.service.method(

1151

alt_interface,

1152

attribute._dbus_in_signature,

1153

attribute._dbus_out_signature)

1154

(types.FunctionType(attribute.func_code,

1155

attribute.func_globals,

1156

attribute.func_name,

1157

attribute.func_defaults,

1158

attribute.func_closure)))

1152

attr[attrname] = (dbus.service.method

1153

(alt_interface,

1154

attribute._dbus_in_signature,

1155

attribute._dbus_out_signature)

1156

(types.FunctionType

1157

(attribute.func_code,

1158

attribute.func_globals,

1159

attribute.func_name,

1160

attribute.func_defaults,

1161

attribute.func_closure)))

1159

1162

# Copy annotations, if any

1160

1163

try:

1161

attr[attrname]._dbus_annotations = dict(

1162

attribute._dbus_annotations)

1164

attr[attrname]._dbus_annotations = (

1165

dict(attribute._dbus_annotations))

1163

1166

except AttributeError:

1164

1167

pass

1165

1168

# Is this a D-Bus property?

1168

1171

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

1169

1172

# property with the alternate D-Bus interface

1170

1173

# name. Add it to the class.

1171

attr[attrname] = (dbus_service_property(

1172

alt_interface, attribute._dbus_signature,

1173

attribute._dbus_access,

1174

attribute._dbus_get_args_options

1175

["byte_arrays"])

1176

(types.FunctionType(

1177

attribute.func_code,

1178

attribute.func_globals,

1179

attribute.func_name,

1180

attribute.func_defaults,

1181

attribute.func_closure)))

1174

attr[attrname] = (dbus_service_property

1175

(alt_interface,

1176

attribute._dbus_signature,

1177

attribute._dbus_access,

1178

attribute

1179

._dbus_get_args_options

1180

["byte_arrays"])

1181

(types.FunctionType

1182

(attribute.func_code,

1183

attribute.func_globals,

1184

attribute.func_name,

1185

attribute.func_defaults,

1186

attribute.func_closure)))

1182

1187

# Copy annotations, if any

1183

1188

try:

1184

attr[attrname]._dbus_annotations = dict(

1185

attribute._dbus_annotations)

1189

attr[attrname]._dbus_annotations = (

1190

dict(attribute._dbus_annotations))

1186

1191

except AttributeError:

1187

1192

pass

1188

1193

# Is this a D-Bus interface?

1191

1196

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

1192

1197

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

1193

1198

# to the class.

1194

attr[attrname] = (

1195

dbus_interface_annotations(alt_interface)

1196

(types.FunctionType(attribute.func_code,

1197

attribute.func_globals,

1198

attribute.func_name,

1199

attribute.func_defaults,

1200

attribute.func_closure)))

1199

attr[attrname] = (dbus_interface_annotations

1200

(alt_interface)

1201

(types.FunctionType

1202

(attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1201

1207

if deprecate:

1202

1208

# Deprecate all alternate interfaces

1203

iname="_AlternateDBusNames_interface_annotation{}"

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1204

1210

for interface_name in interface_names:

1205

1206

1211

@dbus_interface_annotations(interface_name)

1207

1212

def func(self):

1208

1213

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

1209

"true" }

1214

"true" }

1210

1215

# Find an unused name

1211

1216

for aname in (iname.format(i)

1212

1217

for i in itertools.count()):

1216

1221

if interface_names:

1217

1222

# Replace the class with a new subclass of it with

1218

1223

# methods, signals, etc. as created above.

1219

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

1220

(cls, ), attr)

1224

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

1225

(cls,), attr)

1221

1226

return cls

1222

1223

1227

return wrapper

1224

1228

1225

1229

1226

1230

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

1227

"se.bsnet.fukt.Mandos"})

1231

"se.bsnet.fukt.Mandos"})

1228

1232

class ClientDBus(Client, DBusObjectWithProperties):

1229

1233

"""A Client class using D-Bus

1230

1234

1238

"""

1235

1239

1236

1240

runtime_expansions = (Client.runtime_expansions

1237

+ ("dbus_object_path", ))

1238

1239

_interface = "se.recompile.Mandos.Client"

1241

+ ("dbus_object_path",))

1240

1242

1241

1243

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

1242

1244

1245

1247

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

1246

1248

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

1247

1249

# the D-Bus

1248

client_object_name = str(self.name).translate(

1250

client_object_name = unicode(self.name).translate(

1249

1251

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

1250

1252

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

1251

self.dbus_object_path = dbus.ObjectPath(

1252

"/clients/" + client_object_name)

1253

self.dbus_object_path = (dbus.ObjectPath

1254

("/clients/" + client_object_name))

1253

1255

DBusObjectWithProperties.__init__(self, self.bus,

1254

1256

self.dbus_object_path)

1255

1257

1256

def notifychangeproperty(transform_func, dbus_name,

1257

type_func=lambda x: x,

1258

variant_level=1,

1259

invalidate_only=False,

1260

_interface=_interface):

1258

def notifychangeproperty(transform_func,

1259

dbus_name, type_func=lambda x: x,

1260

variant_level=1):

1261

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

1262

its changes to DBus.

1263

1268

to the D-Bus. Default: no transform

1269

variant_level: D-Bus variant level. Default: 1

1270

"""

1271

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

1272

1271

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

1273

1272

def setter(self, value):

1274

1273

if hasattr(self, "dbus_object_path"):

1275

1274

if (not hasattr(self, attrname) or

1276

1275

type_func(getattr(self, attrname, None))

1277

1276

!= type_func(value)):

1278

if invalidate_only:

1279

self.PropertiesChanged(

1280

_interface, dbus.Dictionary(),

1281

dbus.Array((dbus_name, )))

1282

else:

1283

dbus_value = transform_func(

1284

type_func(value),

1285

variant_level = variant_level)

1286

self.PropertyChanged(dbus.String(dbus_name),

1287

dbus_value)

1288

self.PropertiesChanged(

1289

_interface,

1290

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

1291

dbus_value }),

1292

dbus.Array())

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1293

1282

setattr(self, attrname, value)

1294

1283

1295

1284

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

1301

1290

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

1302

1291

last_enabled = notifychangeproperty(datetime_to_dbus,

1303

1292

"LastEnabled")

1304

checker = notifychangeproperty(

1305

dbus.Boolean, "CheckerRunning",

1306

type_func = lambda checker: checker is not None)

1293

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

1294

type_func = lambda checker:

1295

checker is not None)

1307

1296

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1308

1297

"LastCheckedOK")

1309

1298

last_checker_status = notifychangeproperty(dbus.Int16,

1312

1301

datetime_to_dbus, "LastApprovalRequest")

1313

1302

approved_by_default = notifychangeproperty(dbus.Boolean,

1314

1303

"ApprovedByDefault")

1315

approval_delay = notifychangeproperty(

1316

dbus.UInt64, "ApprovalDelay",

1317

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

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1305

"ApprovalDelay",

1306

type_func =

1307

timedelta_to_milliseconds)

1318

1308

approval_duration = notifychangeproperty(

1319

1309

dbus.UInt64, "ApprovalDuration",

1320

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

1310

type_func = timedelta_to_milliseconds)

1321

1311

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

1322

timeout = notifychangeproperty(

1323

dbus.UInt64, "Timeout",

1324

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

1312

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

1313

type_func =

1314

timedelta_to_milliseconds)

1325

1315

extended_timeout = notifychangeproperty(

1326

1316

dbus.UInt64, "ExtendedTimeout",

1327

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

1328

interval = notifychangeproperty(

1329

dbus.UInt64, "Interval",

1330

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

1317

type_func = timedelta_to_milliseconds)

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

timedelta_to_milliseconds)

1331

1322

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

1332

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

1333

invalidate_only=True)

1334

1323

1335

1324

del notifychangeproperty

1336

1325

1343

1332

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

1344

1333

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

1345

1334

1346

def checker_callback(self, source, condition,

1347

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

1348

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

1349

(connection, command), *args,

1350

**kwargs)

1351

exitstatus = self.last_checker_status

1352

if exitstatus >= 0:

1335

def checker_callback(self, pid, condition, command,

1336

*args, **kwargs):

1337

self.checker_callback_tag = None

1338

self.checker = None

1339

if os.WIFEXITED(condition):

1340

exitstatus = os.WEXITSTATUS(condition)

1353

1341

# Emit D-Bus signal

1354

1342

self.CheckerCompleted(dbus.Int16(exitstatus),

1355

dbus.Int64(0),

1343

dbus.Int64(condition),

1356

1344

dbus.String(command))

1357

1345

else:

1358

1346

# Emit D-Bus signal

1359

1347

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

1360

dbus.Int64(

1361

self.last_checker_signal),

1348

dbus.Int64(condition),

1362

1349

dbus.String(command))

1363

return ret

1350

1351

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

1352

*args, **kwargs)

1364

1353

1365

1354

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

1366

1355

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

1378

1367

1379

1368

def approve(self, value=True):

1380

1369

self.approved = value

1381

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

1382

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1383

1373

self.send_changedstate()

1384

1374

1385

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1386

1377

1387

1378

## Interfaces

1388

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1389

1385

## Signals

1390

1386

1391

1387

# CheckerCompleted - signal

1401

1397

pass

1402

1398

1403

1399

# PropertyChanged - signal

1404

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

1405

1400

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

1406

1401

def PropertyChanged(self, property, value):

1407

1402

"D-Bus signal"

1471

1466

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

1472

1467

1473

1468

# ApprovedByDefault - property

1474

@dbus_service_property(_interface,

1475

signature="b",

1469

@dbus_service_property(_interface, signature="b",

1476

1470

access="readwrite")

1477

1471

def ApprovedByDefault_dbus_property(self, value=None):

1478

1472

if value is None: # get

1480

1474

self.approved_by_default = bool(value)

1481

1475

1482

1476

# ApprovalDelay - property

1483

@dbus_service_property(_interface,

1484

signature="t",

1477

@dbus_service_property(_interface, signature="t",

1485

1478

access="readwrite")

1486

1479

def ApprovalDelay_dbus_property(self, value=None):

1487

1480

if value is None: # get

1488

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

1489

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1490

1482

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

1491

1483

1492

1484

# ApprovalDuration - property

1493

@dbus_service_property(_interface,

1494

signature="t",

1485

@dbus_service_property(_interface, signature="t",

1495

1486

access="readwrite")

1496

1487

def ApprovalDuration_dbus_property(self, value=None):

1497

1488

if value is None: # get

1498

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

1499

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1500

1491

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

1501

1492

1502

1493

# Name - property

1510

1501

return dbus.String(self.fingerprint)

1511

1502

1512

1503

# Host - property

1513

@dbus_service_property(_interface,

1514

signature="s",

1504

@dbus_service_property(_interface, signature="s",

1515

1505

access="readwrite")

1516

1506

def Host_dbus_property(self, value=None):

1517

1507

if value is None: # get

1518

1508

return dbus.String(self.host)

1519

self.host = str(value)

1509

self.host = unicode(value)

1520

1510

1521

1511

# Created - property

1522

1512

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

1529

1519

return datetime_to_dbus(self.last_enabled)

1530

1520

1531

1521

# Enabled - property

1532

@dbus_service_property(_interface,

1533

signature="b",

1522

@dbus_service_property(_interface, signature="b",

1534

1523

access="readwrite")

1535

1524

def Enabled_dbus_property(self, value=None):

1536

1525

if value is None: # get

1541

1530

self.disable()

1542

1531

1543

1532

# LastCheckedOK - property

1544

@dbus_service_property(_interface,

1545

signature="s",

1533

@dbus_service_property(_interface, signature="s",

1546

1534

access="readwrite")

1547

1535

def LastCheckedOK_dbus_property(self, value=None):

1548

1536

if value is not None:

1551

1539

return datetime_to_dbus(self.last_checked_ok)

1552

1540

1553

1541

# LastCheckerStatus - property

1554

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

1542

@dbus_service_property(_interface, signature="n",

1543

access="read")

1555

1544

def LastCheckerStatus_dbus_property(self):

1556

1545

return dbus.Int16(self.last_checker_status)

1557

1546

1566

1555

return datetime_to_dbus(self.last_approval_request)

1567

1556

1568

1557

# Timeout - property

1569

@dbus_service_property(_interface,

1570

signature="t",

1558

@dbus_service_property(_interface, signature="t",

1571

1559

access="readwrite")

1572

1560

def Timeout_dbus_property(self, value=None):

1573

1561

if value is None: # get

1574

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

1562

return dbus.UInt64(self.timeout_milliseconds())

1575

1563

old_timeout = self.timeout

1576

1564

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

1577

1565

# Reschedule disabling

1586

1574

is None):

1587

1575

return

1588

1576

gobject.source_remove(self.disable_initiator_tag)

1589

self.disable_initiator_tag = gobject.timeout_add(

1590

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

1591

self.disable)

1577

self.disable_initiator_tag = (

1578

gobject.timeout_add(

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1592

1581

1593

1582

# ExtendedTimeout - property

1594

@dbus_service_property(_interface,

1595

signature="t",

1583

@dbus_service_property(_interface, signature="t",

1596

1584

access="readwrite")

1597

1585

def ExtendedTimeout_dbus_property(self, value=None):

1598

1586

if value is None: # get

1599

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

1600

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

1601

1588

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

1602

1589

1603

1590

# Interval - property

1604

@dbus_service_property(_interface,

1605

signature="t",

1591

@dbus_service_property(_interface, signature="t",

1606

1592

access="readwrite")

1607

1593

def Interval_dbus_property(self, value=None):

1608

1594

if value is None: # get

1609

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

1595

return dbus.UInt64(self.interval_milliseconds())

1610

1596

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

1611

1597

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

1612

1598

return

1613

1599

if self.enabled:

1614

1600

# Reschedule checker run

1615

1601

gobject.source_remove(self.checker_initiator_tag)

1616

self.checker_initiator_tag = gobject.timeout_add(

1617

value, self.start_checker)

1618

self.start_checker() # Start one now, too

1602

self.checker_initiator_tag = (gobject.timeout_add

1603

(value, self.start_checker))

1604

self.start_checker() # Start one now, too

1619

1605

1620

1606

# Checker - property

1621

@dbus_service_property(_interface,

1622

signature="s",

1607

@dbus_service_property(_interface, signature="s",

1623

1608

access="readwrite")

1624

1609

def Checker_dbus_property(self, value=None):

1625

1610

if value is None: # get

1626

1611

return dbus.String(self.checker_command)

1627

self.checker_command = str(value)

1612

self.checker_command = unicode(value)

1628

1613

1629

1614

# CheckerRunning - property

1630

@dbus_service_property(_interface,

1631

signature="b",

1615

@dbus_service_property(_interface, signature="b",

1632

1616

access="readwrite")

1633

1617

def CheckerRunning_dbus_property(self, value=None):

1634

1618

if value is None: # get

1644

1628

return self.dbus_object_path # is already a dbus.ObjectPath

1645

1629

1646

1630

# Secret = property

1647

@dbus_service_property(_interface,

1648

signature="ay",

1649

access="write",

1650

byte_arrays=True)

1631

@dbus_service_property(_interface, signature="ay",

1632

access="write", byte_arrays=True)

1651

1633

def Secret_dbus_property(self, value):

1652

self.secret = bytes(value)

1634

self.secret = str(value)

1653

1635

1654

1636

del _interface

1655

1637

1669

1651

if data[0] == 'data':

1670

1652

return data[1]

1671

1653

if data[0] == 'function':

1672

1673

1654

def func(*args, **kwargs):

1674

1655

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

1675

1656

return self._pipe.recv()[1]

1676

1677

1657

return func

1678

1658

1679

1659

def __setattr__(self, name, value):

1691

1671

def handle(self):

1692

1672

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

1693

1673

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

1694

str(self.client_address))

1674

unicode(self.client_address))

1695

1675

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

1696

1676

self.server.child_pipe.fileno())

1697

1677

1698

session = gnutls.connection.ClientSession(

1699

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

1678

session = (gnutls.connection

1679

.ClientSession(self.request,

1680

gnutls.connection

1681

.X509Credentials()))

1700

1682

1701

1683

# Note: gnutls.connection.X509Credentials is really a

1702

1684

# generic GnuTLS certificate credentials object so long as

1711

1693

priority = self.server.gnutls_priority

1712

1694

if priority is None:

1713

1695

priority = "NORMAL"

1714

gnutls.library.functions.gnutls_priority_set_direct(

1715

session._c_object, priority, None)

1696

(gnutls.library.functions

1697

.gnutls_priority_set_direct(session._c_object,

1698

priority, None))

1716

1699

1717

1700

# Start communication using the Mandos protocol

1718

1701

# Get protocol number

1738

1721

approval_required = False

1739

1722

try:

1740

1723

try:

1741

fpr = self.fingerprint(

1742

self.peer_certificate(session))

1724

fpr = self.fingerprint(self.peer_certificate

1725

(session))

1743

1726

except (TypeError,

1744

1727

gnutls.errors.GNUTLSError) as error:

1745

1728

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

1760

1743

while True:

1761

1744

if not client.enabled:

1762

1745

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

1763

client.name)

1746

client.name)

1764

1747

if self.server.use_dbus:

1765

1748

# Emit D-Bus signal

1766

1749

client.Rejected("Disabled")

1775

1758

if self.server.use_dbus:

1776

1759

# Emit D-Bus signal

1777

1760

client.NeedApproval(

1778

client.approval_delay.total_seconds()

1779

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

1780

1763

else:

1781

1764

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

1782

1765

client.name)

1788

1771

#wait until timeout or approved

1789

1772

time = datetime.datetime.now()

1790

1773

client.changedstate.acquire()

1791

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

1792

1777

client.changedstate.release()

1793

1778

time2 = datetime.datetime.now()

1794

1779

if (time2 - time) >= delay:

1813

1798

logger.warning("gnutls send failed",

1814

1799

exc_info=error)

1815

1800

return

1816

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

1817

len(client.secret) - (sent_size

1818

+ sent))

1801

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

1802

sent, len(client.secret)

1803

- (sent_size + sent))

1819

1804

sent_size += sent

1820

1805

1821

1806

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

1838

1823

def peer_certificate(session):

1839

1824

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

1840

1825

# If not an OpenPGP certificate...

1841

if (gnutls.library.functions.gnutls_certificate_type_get(

1842

session._c_object)

1826

if (gnutls.library.functions

1827

.gnutls_certificate_type_get(session._c_object)

1843

1828

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1844

1829

# ...do the normal thing

1845

1830

return session.peer_certificate

1859

1844

def fingerprint(openpgp):

1860

1845

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1861

1846

# New GnuTLS "datum" with the OpenPGP public key

1862

datum = gnutls.library.types.gnutls_datum_t(

1863

ctypes.cast(ctypes.c_char_p(openpgp),

1864

ctypes.POINTER(ctypes.c_ubyte)),

1865

ctypes.c_uint(len(openpgp)))

1847

datum = (gnutls.library.types

1848

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

1849

ctypes.POINTER

1850

(ctypes.c_ubyte)),

1851

ctypes.c_uint(len(openpgp))))

1866

1852

# New empty GnuTLS certificate

1867

1853

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1868

gnutls.library.functions.gnutls_openpgp_crt_init(

1869

ctypes.byref(crt))

1854

(gnutls.library.functions

1855

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1870

1856

# Import the OpenPGP public key into the certificate

1871

gnutls.library.functions.gnutls_openpgp_crt_import(

1872

crt, ctypes.byref(datum),

1873

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1857

(gnutls.library.functions

1858

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

1859

gnutls.library.constants

1860

.GNUTLS_OPENPGP_FMT_RAW))

1874

1861

# Verify the self signature in the key

1875

1862

crtverify = ctypes.c_uint()

1876

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1877

crt, 0, ctypes.byref(crtverify))

1863

(gnutls.library.functions

1864

.gnutls_openpgp_crt_verify_self(crt, 0,

1865

ctypes.byref(crtverify)))

1878

1866

if crtverify.value != 0:

1879

1867

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1880

raise gnutls.errors.CertificateSecurityError(

1881

"Verify failed")

1868

raise (gnutls.errors.CertificateSecurityError

1869

("Verify failed"))

1882

1870

# New buffer for the fingerprint

1883

1871

buf = ctypes.create_string_buffer(20)

1884

1872

buf_len = ctypes.c_size_t()

1885

1873

# Get the fingerprint from the certificate into the buffer

1886

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1887

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

1874

(gnutls.library.functions

1875

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

1876

ctypes.byref(buf_len)))

1888

1877

# Deinit the certificate

1889

1878

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1890

1879

# Convert the buffer to a Python bytestring

1896

1885

1897

1886

class MultiprocessingMixIn(object):

1898

1887

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

1899

1900

1888

def sub_process_main(self, request, address):

1901

1889

try:

1902

1890

self.finish_request(request, address)

1914

1902

1915

1903

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1916

1904

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

1917

1918

1905

def process_request(self, request, client_address):

1919

1906

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

1920

1907

1941

1928

interface: None or a network interface name (string)

1942

1929

use_ipv6: Boolean; to use IPv6 or not

1943

1930

"""

1944

1945

1931

def __init__(self, server_address, RequestHandlerClass,

1946

interface=None,

1947

use_ipv6=True,

1948

socketfd=None):

1932

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

1949

1933

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

1950

1934

creating a new one with socket.socket().

1951

1935

"""

1992

1976

self.interface)

1993

1977

else:

1994

1978

try:

1995

self.socket.setsockopt(

1996

socket.SOL_SOCKET, SO_BINDTODEVICE,

1997

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

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1980

SO_BINDTODEVICE,

1981

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

1998

1982

except socket.error as error:

1999

1983

if error.errno == errno.EPERM:

2000

1984

logger.error("No permission to bind to"

2018

2002

self.server_address = (any_address,

2019

2003

self.server_address[1])

2020

2004

elif not self.server_address[1]:

2021

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

2005

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

2006

0)

2022

2007

# if self.interface:

2023

2008

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

2024

2009

# 0, # port

2038

2023

2039

2024

Assumes a gobject.MainLoop event loop.

2040

2025

"""

2041

2042

2026

def __init__(self, server_address, RequestHandlerClass,

2043

interface=None,

2044

use_ipv6=True,

2045

clients=None,

2046

gnutls_priority=None,

2047

use_dbus=True,

2048

socketfd=None):

2027

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

2028

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

2049

2029

self.enabled = False

2050

2030

self.clients = clients

2051

2031

if self.clients is None:

2057

2037

interface = interface,

2058

2038

use_ipv6 = use_ipv6,

2059

2039

socketfd = socketfd)

2060

2061

2040

def server_activate(self):

2062

2041

if self.enabled:

2063

2042

return socketserver.TCPServer.server_activate(self)

2067

2046

2068

2047

def add_pipe(self, parent_pipe, proc):

2069

2048

# Call "handle_ipc" for both data and EOF events

2070

gobject.io_add_watch(

2071

parent_pipe.fileno(),

2072

gobject.IO_IN | gobject.IO_HUP,

2073

functools.partial(self.handle_ipc,

2074

parent_pipe = parent_pipe,

2075

proc = proc))

2049

gobject.io_add_watch(parent_pipe.fileno(),

2050

gobject.IO_IN | gobject.IO_HUP,

2051

functools.partial(self.handle_ipc,

2052

parent_pipe =

2053

parent_pipe,

2054

proc = proc))

2076

2055

2077

def handle_ipc(self, source, condition,

2078

parent_pipe=None,

2079

proc = None,

2080

client_object=None):

2056

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

2057

proc = None, client_object=None):

2081

2058

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

2082

2059

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

2083

2060

# Wait for other process to exit

2106

2083

parent_pipe.send(False)

2107

2084

return False

2108

2085

2109

gobject.io_add_watch(

2110

parent_pipe.fileno(),

2111

gobject.IO_IN | gobject.IO_HUP,

2112

functools.partial(self.handle_ipc,

2113

parent_pipe = parent_pipe,

2114

proc = proc,

2115

client_object = client))

2086

gobject.io_add_watch(parent_pipe.fileno(),

2087

gobject.IO_IN | gobject.IO_HUP,

2088

functools.partial(self.handle_ipc,

2089

parent_pipe =

2090

parent_pipe,

2091

proc = proc,

2092

client_object =

2093

client))

2116

2094

parent_pipe.send(True)

2117

2095

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

2118

2096

# same fileno

2124

2102

2125

2103

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

2126

2104

funcname)(*args,

2127

**kwargs)))

2105

**kwargs)))

2128

2106

2129

2107

if command == 'getattr':

2130

2108

attrname = request[1]

2131

2109

if callable(client_object.__getattribute__(attrname)):

2132

parent_pipe.send(('function', ))

2110

parent_pipe.send(('function',))

2133

2111

else:

2134

parent_pipe.send((

2135

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

2112

parent_pipe.send(('data', client_object

2113

.__getattribute__(attrname)))

2136

2114

2137

2115

if command == 'setattr':

2138

2116

attrname = request[1]

2178

2156

# None

2179

2157

"followers")) # Tokens valid after

2180

2158

# this token

2181

Token = collections.namedtuple("Token", (

2182

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

2183

# a "group" containing digits

2184

"value", # datetime.timedelta or None

2185

"followers")) # Tokens valid after this token

2186

2159

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

2187

2160

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

2188

2161

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

2189

2162

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

2190

2163

datetime.timedelta(seconds=1),

2191

frozenset((token_end, )))

2164

frozenset((token_end,)))

2192

2165

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

2193

2166

datetime.timedelta(minutes=1),

2194

2167

frozenset((token_second, token_end)))

2210

2183

frozenset((token_month, token_end)))

2211

2184

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

2212

2185

datetime.timedelta(weeks=1),

2213

frozenset((token_end, )))

2186

frozenset((token_end,)))

2214

2187

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

2215

2188

frozenset((token_year, token_month,

2216

2189

token_day, token_time,

2217

token_week)))

2190

token_week))),

2218

2191

# Define starting values

2219

2192

value = datetime.timedelta() # Value so far

2220

2193

found_token = None

2221

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

2194

followers = frozenset(token_duration,) # Following valid tokens

2222

2195

s = duration # String left to parse

2223

2196

# Loop until end token is found

2224

2197

while found_token is not token_end:

2271

2244

timevalue = datetime.timedelta(0)

2272

2245

for s in interval.split():

2273

2246

try:

2274

suffix = s[-1]

2247

suffix = unicode(s[-1])

2275

2248

value = int(s[:-1])

2276

2249

if suffix == "d":

2277

2250

delta = datetime.timedelta(value)

2284

2257

elif suffix == "w":

2285

2258

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

2286

2259

else:

2287

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

2260

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

2261

.format(suffix))

2288

2262

except IndexError as e:

2289

2263

raise ValueError(*(e.args))

2290

2264

timevalue += delta

2307

2281

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

2308

2282

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

2309

2283

raise OSError(errno.ENODEV,

2310

"{} not a character device"

2284

"{0} not a character device"

2311

2285

.format(os.devnull))

2312

2286

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

2313

2287

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

2323

2297

2324

2298

parser = argparse.ArgumentParser()

2325

2299

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

2326

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

2300

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

2327

2301

help="show version number and exit")

2328

2302

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

2329

2303

help="Bind to interface IF")

2362

2336

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

2363

2337

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

2364

2338

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

2365

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

2366

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

2367

default=None)

2368

2339

2369

2340

options = parser.parse_args()

2370

2341

2379

2350

"port": "",

2380

2351

"debug": "False",

2381

2352

"priority":

2382

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

2383

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

2353

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

2384

2354

"servicename": "Mandos",

2385

2355

"use_dbus": "True",

2386

2356

"use_ipv6": "True",

2389

2359

"socket": "",

2390

2360

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

2391

2361

"foreground": "False",

2392

"zeroconf": "True",

2393

}

2362

}

2394

2363

2395

2364

# Parse config file for server-global settings

2396

2365

server_config = configparser.SafeConfigParser(server_defaults)

2397

2366

del server_defaults

2398

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

2367

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

2368

"mandos.conf"))

2399

2369

# Convert the SafeConfigParser object to a dict

2400

2370

server_settings = server_config.defaults()

2401

2371

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

2419

2389

# Override the settings from the config file with command line

2420

2390

# options, if set.

2421

2391

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

2422

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

2423

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

2424

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

2392

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

2393

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

2394

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

2425

2395

value = getattr(options, option)

2426

2396

if value is not None:

2427

2397

server_settings[option] = value

2428

2398

del options

2429

2399

# Force all strings to be unicode

2430

2400

for option in server_settings.keys():

2431

if isinstance(server_settings[option], bytes):

2432

server_settings[option] = (server_settings[option]

2433

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2434

2403

# Force all boolean options to be boolean

2435

2404

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

2436

"foreground", "zeroconf"):

2405

"foreground"):

2437

2406

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

2438

2407

# Debug implies foreground

2439

2408

if server_settings["debug"]:

2442

2411

2443

2412

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

2444

2413

2445

if (not server_settings["zeroconf"]

2446

and not (server_settings["port"]

2447

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

2448

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

2449

2450

2414

# For convenience

2451

2415

debug = server_settings["debug"]

2452

2416

debuglevel = server_settings["debuglevel"]

2455

2419

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

2456

2420

stored_state_file)

2457

2421

foreground = server_settings["foreground"]

2458

zeroconf = server_settings["zeroconf"]

2459

2422

2460

2423

if debug:

2461

2424

initlogger(debug, logging.DEBUG)

2467

2430

initlogger(debug, level)

2468

2431

2469

2432

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

2470

syslogger.setFormatter(

2471

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

2472

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

2473

server_settings["servicename"])))

2433

syslogger.setFormatter(logging.Formatter

2434

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

2435

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

2436

.format(server_settings

2437

["servicename"])))

2474

2438

2475

2439

# Parse config file with clients

2476

2440

client_config = configparser.SafeConfigParser(Client

2481

2445

global mandos_dbus_service

2482

2446

mandos_dbus_service = None

2483

2447

2484

socketfd = None

2485

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

2486

socketfd = server_settings["socket"]

2487

tcp_server = MandosServer(

2488

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

2489

ClientHandler,

2490

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

2491

use_ipv6=use_ipv6,

2492

gnutls_priority=server_settings["priority"],

2493

use_dbus=use_dbus,

2494

socketfd=socketfd)

2448

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

2449

server_settings["port"]),

2450

ClientHandler,

2451

interface=(server_settings["interface"]

2452

or None),

2453

use_ipv6=use_ipv6,

2454

gnutls_priority=

2455

server_settings["priority"],

2456

use_dbus=use_dbus,

2457

socketfd=(server_settings["socket"]

2458

or None))

2495

2459

if not foreground:

2496

2460

pidfilename = "/run/mandos.pid"

2497

2461

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

2531

2495

def debug_gnutls(level, string):

2532

2496

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

2533

2497

2534

gnutls.library.functions.gnutls_global_set_log_function(

2535

debug_gnutls)

2498

(gnutls.library.functions

2499

.gnutls_global_set_log_function(debug_gnutls))

2536

2500

2537

2501

# Redirect stdin so all checkers get /dev/null

2538

2502

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

2558

2522

if use_dbus:

2559

2523

try:

2560

2524

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

2561

bus,

2562

do_not_queue=True)

2563

old_bus_name = dbus.service.BusName(

2564

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

2565

do_not_queue=True)

2525

bus, do_not_queue=True)

2526

old_bus_name = (dbus.service.BusName

2527

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

2528

do_not_queue=True))

2566

2529

except dbus.exceptions.NameExistsException as e:

2567

2530

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

2568

2531

use_dbus = False

2569

2532

server_settings["use_dbus"] = False

2570

2533

tcp_server.use_dbus = False

2571

if zeroconf:

2572

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2573

service = AvahiServiceToSyslog(

2574

name = server_settings["servicename"],

2575

servicetype = "_mandos._tcp",

2576

protocol = protocol,

2577

bus = bus)

2578

if server_settings["interface"]:

2579

service.interface = if_nametoindex(

2580

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

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

2581

2542

2582

2543

global multiprocessing_manager

2583

2544

multiprocessing_manager = multiprocessing.Manager()

2602

2563

if server_settings["restore"]:

2603

2564

try:

2604

2565

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

2605

clients_data, old_client_settings = pickle.load(

2606

stored_state)

2566

clients_data, old_client_settings = (pickle.load

2567

(stored_state))

2607

2568

os.remove(stored_state_path)

2608

2569

except IOError as e:

2609

2570

if e.errno == errno.ENOENT:

2610

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

2611

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

2571

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

2572

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

2612

2573

else:

2613

2574

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

2614

2575

exc_info=e)

2615

2576

raise

2616

2577

except EOFError as e:

2617

2578

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

2618

"EOFError:",

2619

exc_info=e)

2579

"EOFError:", exc_info=e)

2620

2580

2621

2581

with PGPEngine() as pgp:

2622

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

2623

2583

# Skip removed clients

2624

2584

if client_name not in client_settings:

2625

2585

continue

2634

2594

# For each value in new config, check if it

2635

2595

# differs from the old config value (Except for

2636

2596

# the "secret" attribute)

2637

if (name != "secret"

2638

and (value !=

2639

old_client_settings[client_name][name])):

2597

if (name != "secret" and

2598

value != old_client_settings[client_name]

2599

[name]):

2640

2600

client[name] = value

2641

2601

except KeyError:

2642

2602

pass

2643

2603

2644

2604

# Clients who has passed its expire date can still be

2645

# enabled if its last checker was successful. A Client

2605

# enabled if its last checker was successful. Clients

2646

2606

# whose checker succeeded before we stored its state is

2647

2607

# assumed to have successfully run all checkers during

2648

2608

# downtime.

2650

2610

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

2651

2611

if not client["last_checked_ok"]:

2652

2612

logger.warning(

2653

"disabling client {} - Client never "

2654

"performed a successful checker".format(

2655

client_name))

2613

"disabling client {0} - Client never "

2614

"performed a successful checker"

2615

.format(client_name))

2656

2616

client["enabled"] = False

2657

2617

elif client["last_checker_status"] != 0:

2658

2618

logger.warning(

2659

"disabling client {} - Client last"

2660

" checker failed with error code"

2661

" {}".format(

2662

client_name,

2663

client["last_checker_status"]))

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2621

.format(client_name,

2622

client["last_checker_status"]))

2664

2623

client["enabled"] = False

2665

2624

else:

2666

client["expires"] = (

2667

datetime.datetime.utcnow()

2668

+ client["timeout"])

2625

client["expires"] = (datetime.datetime

2626

.utcnow()

2627

+ client["timeout"])

2669

2628

logger.debug("Last checker succeeded,"

2670

" keeping {} enabled".format(

2671

client_name))

2629

" keeping {0} enabled"

2630

.format(client_name))

2672

2631

try:

2673

client["secret"] = pgp.decrypt(

2674

client["encrypted_secret"],

2675

client_settings[client_name]["secret"])

2632

client["secret"] = (

2633

pgp.decrypt(client["encrypted_secret"],

2634

client_settings[client_name]

2635

["secret"]))

2676

2636

except PGPError:

2677

2637

# If decryption fails, we use secret from new settings

2678

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

2679

client_name))

2680

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

2681

["secret"])

2638

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

2639

.format(client_name))

2640

client["secret"] = (

2641

client_settings[client_name]["secret"])

2682

2642

2683

2643

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

2684

2644

for client_name in (set(old_client_settings)

2689

2649

clients_data[client_name] = client_settings[client_name]

2690

2650

2691

2651

# Create all client objects

2692

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

2693

2653

tcp_server.clients[client_name] = client_class(

2694

name = client_name,

2695

settings = client,

2654

name = client_name, settings = client,

2696

2655

server_settings = server_settings)

2697

2656

2698

2657

if not tcp_server.clients:

2703

2662

try:

2704

2663

with pidfile:

2705

2664

pid = os.getpid()

2706

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

2665

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

2707

2666

except IOError:

2708

2667

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

2709

2668

pidfilename, pid)

2714

2673

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

2715

2674

2716

2675

if use_dbus:

2717

2718

@alternate_dbus_interfaces(

2719

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

2676

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

2677

"se.bsnet.fukt.Mandos"})

2720

2678

class MandosDBusService(DBusObjectWithProperties):

2721

2679

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

2722

2723

2680

def __init__(self):

2724

2681

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

2725

2726

2682

_interface = "se.recompile.Mandos"

2727

2683

2728

2684

@dbus_interface_annotations(_interface)

2729

2685

def _foo(self):

2730

return {

2731

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

2732

"false" }

2686

return { "org.freedesktop.DBus.Property"

2687

".EmitsChangedSignal":

2688

"false"}

2733

2689

2734

2690

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

2735

2691

def ClientAdded(self, objpath):

2749

2705

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

2750

2706

def GetAllClients(self):

2751

2707

"D-Bus method"

2752

return dbus.Array(c.dbus_object_path for c in

2708

return dbus.Array(c.dbus_object_path

2709

for c in

2753

2710

tcp_server.clients.itervalues())

2754

2711

2755

2712

@dbus.service.method(_interface,

2757

2714

def GetAllClientsWithProperties(self):

2758

2715

"D-Bus method"

2759

2716

return dbus.Dictionary(

2760

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

2761

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

2717

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

2718

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

2762

2719

signature="oa{sv}")

2763

2720

2764

2721

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

2781

2738

2782

2739

def cleanup():

2783

2740

"Cleanup function; run on exit"

2784

if zeroconf:

2785

service.cleanup()

2741

service.cleanup()

2786

2742

2787

2743

multiprocessing.active_children()

2788

2744

wnull.close()

2802

2758

2803

2759

# A list of attributes that can not be pickled

2804

2760

# + secret.

2805

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

2806

"checker", "server_settings" }

2807

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

2808

.Object):

2761

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

2762

"checker", "server_settings"))

2763

for name, typ in (inspect.getmembers

2764

(dbus.service.Object)):

2809

2765

exclude.add(name)

2810

2766

2811

2767

client_dict["encrypted_secret"] = (client

2818

2774

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

2819

2775

2820

2776

try:

2821

with tempfile.NamedTemporaryFile(

2822

mode='wb',

2823

suffix=".pickle",

2824

prefix='clients-',

2825

dir=os.path.dirname(stored_state_path),

2826

delete=False) as stored_state:

2777

with (tempfile.NamedTemporaryFile

2778

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

2779

dir=os.path.dirname(stored_state_path),

2780

delete=False)) as stored_state:

2827

2781

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

2828

tempname = stored_state.name

2782

tempname=stored_state.name

2829

2783

os.rename(tempname, stored_state_path)

2830

2784

except (IOError, OSError) as e:

2831

2785

if not debug:

2834

2788

except NameError:

2835

2789

pass

2836

2790

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

2837

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

2791

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

2838

2792

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

2839

2793

else:

2840

2794

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

2850

2804

client.disable(quiet=True)

2851

2805

if use_dbus:

2852

2806

# Emit D-Bus signal

2853

mandos_dbus_service.ClientRemoved(

2854

client.dbus_object_path, client.name)

2807

mandos_dbus_service.ClientRemoved(client

2808

.dbus_object_path,

2809

client.name)

2855

2810

client_settings.clear()

2856

2811

2857

2812

atexit.register(cleanup)

2868

2823

tcp_server.server_activate()

2869

2824

2870

2825

# Find out what port we got

2871

if zeroconf:

2872

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

2826

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

2873

2827

if use_ipv6:

2874

2828

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

2875

2829

" flowinfo %d, scope_id %d",

2881

2835

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

2882

2836

2883

2837

try:

2884

if zeroconf:

2885

# From the Avahi example code

2886

try:

2887

service.activate()

2888

except dbus.exceptions.DBusException as error:

2889

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

2890

cleanup()

2891

sys.exit(1)

2892

# End of Avahi example code

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

2893

2846

2894

2847

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

2895

2848

lambda *args, **kwargs:

2910

2863

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

2911

2864

cleanup()

2912

2865

2913

2914

2866

if __name__ == '__main__':

2915

2867

main()