/mandos/release : revision 237.7.332

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

69

78

import tempfile

70

79

import itertools

71

80

import collections

81

import codecs

72

82

73

83

import dbus

74

84

import dbus.service

75

import gobject

85

try:

86

import gobject

87

except ImportError:

88

from gi.repository import GObject as gobject

76

89

import avahi

77

90

from dbus.mainloop.glib import DBusGMainLoop

78

91

import ctypes

91

104

if sys.version_info.major == 2:

92

105

str = unicode

93

106

94

version = "1.6.8"

107

version = "1.6.9"

95

108

stored_state_file = "clients.pickle"

96

109

97

110

logger = logging.getLogger()

98

111

syslogger = None

99

112

100

113

try:

101

if_nametoindex = (ctypes.cdll.LoadLibrary

102

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

103

.if_nametoindex)

114

if_nametoindex = ctypes.cdll.LoadLibrary(

115

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

104

116

except (OSError, AttributeError):

117

105

118

def if_nametoindex(interface):

106

119

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

107

120

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

116

129

"""init logger and add loglevel"""

117

130

118

131

global syslogger

119

syslogger = (logging.handlers.SysLogHandler

120

(facility =

121

logging.handlers.SysLogHandler.LOG_DAEMON,

122

address = "/dev/log"))

132

syslogger = (logging.handlers.SysLogHandler(

133

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

134

address = "/dev/log"))

123

135

syslogger.setFormatter(logging.Formatter

124

136

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

125

137

' %(message)s'))

142

154

143

155

class PGPEngine(object):

144

156

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

157

145

158

def __init__(self):

146

159

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

147

160

self.gnupgargs = ['--batch',

186

199

187

200

def encrypt(self, data, password):

188

201

passphrase = self.password_encode(password)

189

with tempfile.NamedTemporaryFile(dir=self.tempdir

190

) as passfile:

202

with tempfile.NamedTemporaryFile(

203

dir=self.tempdir) as passfile:

191

204

passfile.write(passphrase)

192

205

passfile.flush()

193

206

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

204

217

205

218

def decrypt(self, data, password):

206

219

passphrase = self.password_encode(password)

207

with tempfile.NamedTemporaryFile(dir = self.tempdir

208

) as passfile:

220

with tempfile.NamedTemporaryFile(

221

dir = self.tempdir) as passfile:

209

222

passfile.write(passphrase)

210

223

passfile.flush()

211

224

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

215

228

stdin = subprocess.PIPE,

216

229

stdout = subprocess.PIPE,

217

230

stderr = subprocess.PIPE)

218

decrypted_plaintext, err = proc.communicate(input

219

= data)

231

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

220

232

if proc.returncode != 0:

221

233

raise PGPError(err)

222

234

return decrypted_plaintext

228

240

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

229

241

**kwargs)

230

242

243

231

244

class AvahiServiceError(AvahiError):

232

245

pass

233

246

247

234

248

class AvahiGroupError(AvahiError):

235

249

pass

236

250

256

270

bus: dbus.SystemBus()

257

271

"""

258

272

259

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

260

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

261

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

262

protocol = avahi.PROTO_UNSPEC, bus = None):

273

def __init__(self,

274

interface = avahi.IF_UNSPEC,

275

name = None,

276

servicetype = None,

277

port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

263

284

self.interface = interface

264

285

self.name = name

265

286

self.type = servicetype

275

296

self.bus = bus

276

297

self.entry_group_state_changed_match = None

277

298

278

def rename(self):

299

def rename(self, remove=True):

279

300

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

280

301

if self.rename_count >= self.max_renames:

281

302

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

282

303

" after %i retries, exiting.",

283

304

self.rename_count)

284

305

raise AvahiServiceError("Too many renames")

285

self.name = str(self.server

286

.GetAlternativeServiceName(self.name))

306

self.name = str(

307

self.server.GetAlternativeServiceName(self.name))

308

self.rename_count += 1

287

309

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

288

310

self.name)

289

self.remove()

311

if remove:

312

self.remove()

290

313

try:

291

314

self.add()

292

315

except dbus.exceptions.DBusException as error:

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

316

if (error.get_dbus_name()

317

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

318

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

319

return self.rename(remove=False)

320

else:

321

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

322

self.cleanup()

323

os._exit(1)

297

324

298

325

def remove(self):

299

326

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

338

365

elif state == avahi.ENTRY_GROUP_FAILURE:

339

366

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

340

367

str(error))

341

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

342

.format(error))

368

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

343

369

344

370

def cleanup(self):

345

371

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

355

381

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

356

382

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

357

383

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

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

364

"Zeroconf server failure" }

384

bad_states = {

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

386

avahi.SERVER_REGISTERING: None,

387

avahi.SERVER_COLLISION: "Zeroconf server name collision",

388

avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

365

390

if state in bad_states:

366

391

if bad_states[state] is not None:

367

392

if error is None:

370

395

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

371

396

self.cleanup()

372

397

elif state == avahi.SERVER_RUNNING:

373

self.add()

398

try:

399

self.add()

400

except dbus.exceptions.DBusException as error:

401

if (error.get_dbus_name()

402

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

403

logger.info("Local Zeroconf service name"

404

" collision.")

405

return self.rename(remove=False)

406

else:

407

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

408

self.cleanup()

409

os._exit(1)

374

410

else:

375

411

if error is None:

376

412

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

386

422

follow_name_owner_changes=True),

387

423

avahi.DBUS_INTERFACE_SERVER)

388

424

self.server.connect_to_signal("StateChanged",

389

self.server_state_changed)

425

self.server_state_changed)

390

426

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

391

427

392

428

393

429

class AvahiServiceToSyslog(AvahiService):

394

def rename(self):

430

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

395

431

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

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

432

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

433

syslogger.setFormatter(logging.Formatter(

434

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

435

.format(self.name)))

401

436

return ret

402

437

438

def call_pipe(connection, # : multiprocessing.Connection

439

func, *args, **kwargs):

440

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

441

442

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

443

return value on the provided multiprocessing.Connection.

444

"""

445

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

446

connection.close()

403

447

404

448

class Client(object):

405

449

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

432

476

last_checker_status: integer between 0 and 255 reflecting exit

433

477

status of last checker. -1 reflects crashed

434

478

checker, -2 means no checker completed yet.

479

last_checker_signal: The signal which killed the last checker, if

480

last_checker_status is -1

435

481

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

436

482

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

437

483

D-Bus identifiers

450

496

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

451

497

"last_approval_request", "last_checked_ok",

452

498

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

453

client_defaults = { "timeout": "PT5M",

454

"extended_timeout": "PT15M",

455

"interval": "PT2M",

456

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

457

"host": "",

458

"approval_delay": "PT0S",

459

"approval_duration": "PT1S",

460

"approved_by_default": "True",

461

"enabled": "True",

462

}

499

client_defaults = {

500

"timeout": "PT5M",

501

"extended_timeout": "PT15M",

502

"interval": "PT2M",

503

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

504

"host": "",

505

"approval_delay": "PT0S",

506

"approval_duration": "PT1S",

507

"approved_by_default": "True",

508

"enabled": "True",

509

}

463

510

464

511

@staticmethod

465

512

def config_parser(config):

481

528

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

482

529

"enabled")

483

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

484

534

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

485

535

.replace(" ", ""))

486

536

if "secret" in section:

528

578

self.expires = None

529

579

530

580

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

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the fingerprint()

533

# function

534

581

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

535

582

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

536

583

datetime.datetime.utcnow())

543

590

self.current_checker_command = None

544

591

self.approved = None

545

592

self.approvals_pending = 0

546

self.changedstate = (multiprocessing_manager

547

.Condition(multiprocessing_manager

548

.Lock()))

549

self.client_structure = [attr for attr in

550

self.__dict__.iterkeys()

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

551

597

if not attr.startswith("_")]

552

598

self.client_structure.append("client_structure")

553

599

554

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

555

lambda obj:

556

isinstance(obj,

557

property)):

600

for name, t in inspect.getmembers(

601

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

558

602

if not name.startswith("_"):

559

603

self.client_structure.append(name)

560

604

602

646

# and every interval from then on.

603

647

if self.checker_initiator_tag is not None:

604

648

gobject.source_remove(self.checker_initiator_tag)

605

self.checker_initiator_tag = (gobject.timeout_add

606

(int(self.interval

607

.total_seconds() * 1000),

608

self.start_checker))

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

609

652

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

610

653

if self.disable_initiator_tag is not None:

611

654

gobject.source_remove(self.disable_initiator_tag)

612

self.disable_initiator_tag = (gobject.timeout_add

613

(int(self.timeout

614

.total_seconds() * 1000),

615

self.disable))

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

616

657

# Also start a new checker *right now*.

617

658

self.start_checker()

618

659

619

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

660

def checker_callback(self, source, condition, connection,

661

command):

620

662

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

621

663

self.checker_callback_tag = None

622

664

self.checker = None

623

if os.WIFEXITED(condition):

624

self.last_checker_status = os.WEXITSTATUS(condition)

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

625

672

if self.last_checker_status == 0:

626

673

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

627

674

vars(self))

628

675

self.checked_ok()

629

676

else:

630

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

631

vars(self))

677

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

632

678

else:

633

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

634

681

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

635

682

vars(self))

683

return False

636

684

637

685

def checked_ok(self):

638

686

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

639

687

self.last_checked_ok = datetime.datetime.utcnow()

640

688

self.last_checker_status = 0

689

self.last_checker_signal = None

641

690

self.bump_timeout()

642

691

643

692

def bump_timeout(self, timeout=None):

648

697

gobject.source_remove(self.disable_initiator_tag)

649

698

self.disable_initiator_tag = None

650

699

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

651

self.disable_initiator_tag = (gobject.timeout_add

652

(int(timeout.total_seconds()

653

* 1000), self.disable))

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

654

702

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

655

703

656

704

def need_approval(self):

670

718

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

671

719

# should be.

672

720

673

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

674

try:

675

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

676

except AttributeError:

677

pass

678

except OSError as error:

679

if error.errno != errno.ECHILD:

680

raise

681

else:

682

if pid:

683

logger.warning("Checker was a zombie")

684

gobject.source_remove(self.checker_callback_tag)

685

self.checker_callback(pid, status,

686

self.current_checker_command)

721

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

722

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

723

self.checker.join()

724

self.checker = None

687

725

# Start a new checker if needed

688

726

if self.checker is None:

689

727

# Escape attributes for the shell

690

escaped_attrs = { attr:

691

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

692

for attr in self.runtime_expansions }

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

693

731

try:

694

732

command = self.checker_command % escaped_attrs

695

733

except TypeError as error:

696

734

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

697

self.checker_command, exc_info=error)

698

return True # Try again later

735

self.checker_command,

736

exc_info=error)

737

return True # Try again later

699

738

self.current_checker_command = command

700

try:

701

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

702

command, self.name)

703

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

704

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

705

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

706

# always replaced by /dev/null.)

707

# The exception is when not debugging but nevertheless

708

# running in the foreground; use the previously

709

# created wnull.

710

popen_args = {}

711

if (not self.server_settings["debug"]

712

and self.server_settings["foreground"]):

713

popen_args.update({"stdout": wnull,

714

"stderr": wnull })

715

self.checker = subprocess.Popen(command,

716

close_fds=True,

717

shell=True, cwd="/",

718

**popen_args)

719

except OSError as error:

720

logger.error("Failed to start subprocess",

721

exc_info=error)

722

return True

723

self.checker_callback_tag = (gobject.child_watch_add

724

(self.checker.pid,

725

self.checker_callback,

726

data=command))

727

# The checker may have completed before the gobject

728

# watch was added. Check for this.

729

try:

730

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

731

except OSError as error:

732

if error.errno == errno.ECHILD:

733

# This should never happen

734

logger.error("Child process vanished",

735

exc_info=error)

736

return True

737

raise

738

if pid:

739

gobject.source_remove(self.checker_callback_tag)

740

self.checker_callback(pid, status, command)

739

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

740

self.name)

741

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

742

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

743

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

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

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

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

763

self.checker_callback, pipe[0], command)

741

764

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

742

765

return True

743

766

749

772

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

750

773

return

751

774

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

752

try:

753

self.checker.terminate()

754

#time.sleep(0.5)

755

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

756

# self.checker.kill()

757

except OSError as error:

758

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

759

raise

775

self.checker.terminate()

760

776

self.checker = None

761

777

762

778

763

def dbus_service_property(dbus_interface, signature="v",

764

access="readwrite", byte_arrays=False):

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

765

783

"""Decorators for marking methods of a DBusObjectWithProperties to

766

784

become properties on the D-Bus.

767

785

777

795

if byte_arrays and signature != "ay":

778

796

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

779

797

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

798

780

799

def decorator(func):

781

800

func._dbus_is_property = True

782

801

func._dbus_interface = dbus_interface

787

806

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

788

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

789

808

return func

809

790

810

return decorator

791

811

792

812

801

821

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

802

822

"false"}

803

823

"""

824

804

825

def decorator(func):

805

826

func._dbus_is_interface = True

806

827

func._dbus_interface = dbus_interface

807

828

func._dbus_name = dbus_interface

808

829

return func

830

809

831

return decorator

810

832

811

833

820

842

access="r")

821

843

def Property_dbus_property(self):

822

844

return dbus.Boolean(False)

845

846

See also the DBusObjectWithAnnotations class.

823

847

"""

848

824

849

def decorator(func):

825

850

func._dbus_annotations = annotations

826

851

return func

852

827

853

return decorator

828

854

829

855

832

858

"""

833

859

pass

834

860

861

835

862

class DBusPropertyAccessException(DBusPropertyException):

836

863

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

837

864

"""

844

871

pass

845

872

846

873

847

class DBusObjectWithProperties(dbus.service.Object):

848

"""A D-Bus object with properties.

874

class DBusObjectWithAnnotations(dbus.service.Object):

875

"""A D-Bus object with annotations.

849

876

850

Classes inheriting from this can use the dbus_service_property

851

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

852

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

877

Classes inheriting from this can use the dbus_annotations

878

decorator to add annotations to methods or signals.

853

879

"""

854

880

855

881

@staticmethod

865

891

def _get_all_dbus_things(self, thing):

866

892

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

867

893

"""

868

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

869

name),

894

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

870

895

athing.__get__(self))

871

896

for cls in self.__class__.__mro__

872

897

for name, athing in

873

inspect.getmembers(cls,

874

self._is_dbus_thing(thing)))

898

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

899

900

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

901

out_signature = "s",

902

path_keyword = 'object_path',

903

connection_keyword = 'connection')

904

def Introspect(self, object_path, connection):

905

"""Overloading of standard D-Bus method.

906

907

Inserts annotation tags on methods and signals.

908

"""

909

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

910

connection)

911

try:

912

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

913

914

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

915

# Add annotation tags

916

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

917

for tag in if_tag.getElementsByTagName(typ):

918

annots = dict()

919

for name, prop in (self.

920

_get_all_dbus_things(typ)):

921

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

922

and prop._dbus_interface

923

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

924

annots.update(getattr(

925

prop, "_dbus_annotations", {}))

926

for name, value in annots.items():

927

ann_tag = document.createElement(

928

"annotation")

929

ann_tag.setAttribute("name", name)

930

ann_tag.setAttribute("value", value)

931

tag.appendChild(ann_tag)

932

# Add interface annotation tags

933

for annotation, value in dict(

934

itertools.chain.from_iterable(

935

annotations().items()

936

for name, annotations

937

in self._get_all_dbus_things("interface")

938

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

939

)).items():

940

ann_tag = document.createElement("annotation")

941

ann_tag.setAttribute("name", annotation)

942

ann_tag.setAttribute("value", value)

943

if_tag.appendChild(ann_tag)

944

# Fix argument name for the Introspect method itself

945

if (if_tag.getAttribute("name")

946

== dbus.INTROSPECTABLE_IFACE):

947

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

948

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

949

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

950

if (arg.getAttribute("direction")

951

== "out"):

952

arg.setAttribute("name",

953

"xml_data")

954

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

955

document.unlink()

956

except (AttributeError, xml.dom.DOMException,

957

xml.parsers.expat.ExpatError) as error:

958

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

959

exc_info=error)

960

return xmlstring

961

962

963

class DBusObjectWithProperties(DBusObjectWithAnnotations):

964

"""A D-Bus object with properties.

965

966

Classes inheriting from this can use the dbus_service_property

967

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

968

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

969

"""

875

970

876

971

def _get_dbus_property(self, interface_name, property_name):

877

972

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

878

973

property with the specified name and interface.

879

974

"""

880

for cls in self.__class__.__mro__:

881

for name, value in (inspect.getmembers

882

(cls,

883

self._is_dbus_thing("property"))):

975

for cls in self.__class__.__mro__:

976

for name, value in inspect.getmembers(

977

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

884

978

if (value._dbus_name == property_name

885

979

and value._dbus_interface == interface_name):

886

980

return value.__get__(self)

887

981

888

982

# No such property

889

raise DBusPropertyNotFound(self.dbus_object_path + ":"

890

+ interface_name + "."

891

+ property_name)

983

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

984

self.dbus_object_path, interface_name, property_name))

892

985

893

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

986

@dbus.service.method(dbus.PROPERTIES_IFACE,

987

in_signature="ss",

894

988

out_signature="v")

895

989

def Get(self, interface_name, property_name):

896

990

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

921

1015

for byte in value))

922

1016

prop(value)

923

1017

924

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

1018

@dbus.service.method(dbus.PROPERTIES_IFACE,

1019

in_signature="s",

925

1020

out_signature="a{sv}")

926

1021

def GetAll(self, interface_name):

927

1022

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

942

1037

if not hasattr(value, "variant_level"):

943

1038

properties[name] = value

944

1039

continue

945

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

946

value.variant_level+1)

1040

properties[name] = type(value)(

1041

value, variant_level = value.variant_level + 1)

947

1042

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

948

1043

949

1044

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

963

1058

964

1059

Inserts property tags and interface annotation tags.

965

1060

"""

966

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

967

connection)

1061

xmlstring = DBusObjectWithAnnotations.Introspect(self,

1062

object_path,

1063

connection)

968

1064

try:

969

1065

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

1066

970

1067

def make_tag(document, name, prop):

971

1068

e = document.createElement("property")

972

1069

e.setAttribute("name", name)

973

1070

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

974

1071

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

975

1072

return e

1073

976

1074

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

977

1075

# Add property tags

978

1076

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

981

1079

if prop._dbus_interface

982

1080

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

983

1081

if_tag.appendChild(tag)

984

# Add annotation tags

985

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

986

for tag in if_tag.getElementsByTagName(typ):

987

annots = dict()

988

for name, prop in (self.

989

_get_all_dbus_things(typ)):

990

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

991

and prop._dbus_interface

992

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

993

annots.update(getattr

994

(prop,

995

"_dbus_annotations",

996

{}))

997

for name, value in annots.items():

998

ann_tag = document.createElement(

999

"annotation")

1000

ann_tag.setAttribute("name", name)

1001

ann_tag.setAttribute("value", value)

1002

tag.appendChild(ann_tag)

1003

# Add interface annotation tags

1004

for annotation, value in dict(

1005

itertools.chain.from_iterable(

1006

annotations().items()

1007

for name, annotations in

1008

self._get_all_dbus_things("interface")

1009

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

1010

)).items():

1011

ann_tag = document.createElement("annotation")

1012

ann_tag.setAttribute("name", annotation)

1013

ann_tag.setAttribute("value", value)

1014

if_tag.appendChild(ann_tag)

1082

# Add annotation tags for properties

1083

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

1084

annots = dict()

1085

for name, prop in self._get_all_dbus_things(

1086

"property"):

1087

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

1088

and prop._dbus_interface

1089

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

1090

annots.update(getattr(

1091

prop, "_dbus_annotations", {}))

1092

for name, value in annots.items():

1093

ann_tag = document.createElement(

1094

"annotation")

1095

ann_tag.setAttribute("name", name)

1096

ann_tag.setAttribute("value", value)

1097

tag.appendChild(ann_tag)

1015

1098

# Add the names to the return values for the

1016

1099

# "org.freedesktop.DBus.Properties" methods

1017

1100

if (if_tag.getAttribute("name")

1040

1123

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

1041

1124

if dt is None:

1042

1125

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

1043

return dbus.String(dt.isoformat(),

1044

variant_level=variant_level)

1126

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

1045

1127

1046

1128

1047

1129

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1067

1149

(from DBusObjectWithProperties) and interfaces (from the

1068

1150

dbus_interface_annotations decorator).

1069

1151

"""

1152

1070

1153

def wrapper(cls):

1071

1154

for orig_interface_name, alt_interface_name in (

1072

alt_interface_names.items()):

1155

alt_interface_names.items()):

1073

1156

attr = {}

1074

1157

interface_names = set()

1075

1158

# Go though all attributes of the class

1077

1160

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

1078

1161

# with the wrong interface name

1079

1162

if (not hasattr(attribute, "_dbus_interface")

1080

or not attribute._dbus_interface

1081

.startswith(orig_interface_name)):

1163

or not attribute._dbus_interface.startswith(

1164

orig_interface_name)):

1082

1165

continue

1083

1166

# Create an alternate D-Bus interface name based on

1084

1167

# the current name

1085

alt_interface = (attribute._dbus_interface

1086

.replace(orig_interface_name,

1087

alt_interface_name))

1168

alt_interface = attribute._dbus_interface.replace(

1169

orig_interface_name, alt_interface_name)

1088

1170

interface_names.add(alt_interface)

1089

1171

# Is this a D-Bus signal?

1090

1172

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

1091

# Extract the original non-method undecorated

1092

# function by black magic

1093

nonmethod_func = (dict(

1173

if sys.version_info.major == 2:

1174

# Extract the original non-method undecorated

1175

# function by black magic

1176

nonmethod_func = (dict(

1094

1177

zip(attribute.func_code.co_freevars,

1095

attribute.__closure__))["func"]

1096

.cell_contents)

1178

attribute.__closure__))

1179

["func"].cell_contents)

1180

else:

1181

nonmethod_func = attribute

1097

1182

# Create a new, but exactly alike, function

1098

1183

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

1099

1184

# with the alternate D-Bus interface name

1100

new_function = (dbus.service.signal

1101

(alt_interface,

1102

attribute._dbus_signature)

1103

(types.FunctionType(

1104

nonmethod_func.func_code,

1105

nonmethod_func.func_globals,

1106

nonmethod_func.func_name,

1107

nonmethod_func.func_defaults,

1108

nonmethod_func.func_closure)))

1185

if sys.version_info.major == 2:

1186

new_function = types.FunctionType(

1187

nonmethod_func.func_code,

1188

nonmethod_func.func_globals,

1189

nonmethod_func.func_name,

1190

nonmethod_func.func_defaults,

1191

nonmethod_func.func_closure)

1192

else:

1193

new_function = types.FunctionType(

1194

nonmethod_func.__code__,

1195

nonmethod_func.__globals__,

1196

nonmethod_func.__name__,

1197

nonmethod_func.__defaults__,

1198

nonmethod_func.__closure__)

1199

new_function = (dbus.service.signal(

1200

alt_interface,

1201

attribute._dbus_signature)(new_function))

1109

1202

# Copy annotations, if any

1110

1203

try:

1111

new_function._dbus_annotations = (

1112

dict(attribute._dbus_annotations))

1204

new_function._dbus_annotations = dict(

1205

attribute._dbus_annotations)

1113

1206

except AttributeError:

1114

1207

pass

1115

1208

# Define a creator of a function to call both the

1120

1213

"""This function is a scope container to pass

1121

1214

func1 and func2 to the "call_both" function

1122

1215

outside of its arguments"""

1216

1123

1217

def call_both(*args, **kwargs):

1124

1218

"""This function will emit two D-Bus

1125

1219

signals by calling func1 and func2"""

1126

1220

func1(*args, **kwargs)

1127

1221

func2(*args, **kwargs)

1222

1128

1223

return call_both

1129

1224

# Create the "call_both" function and add it to

1130

1225

# the class

1135

1230

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

1136

1231

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

1137

1232

# to the class.

1138

attr[attrname] = (dbus.service.method

1139

(alt_interface,

1140

attribute._dbus_in_signature,

1141

attribute._dbus_out_signature)

1142

(types.FunctionType

1143

(attribute.func_code,

1144

attribute.func_globals,

1145

attribute.func_name,

1146

attribute.func_defaults,

1147

attribute.func_closure)))

1233

attr[attrname] = (

1234

dbus.service.method(

1235

alt_interface,

1236

attribute._dbus_in_signature,

1237

attribute._dbus_out_signature)

1238

(types.FunctionType(attribute.func_code,

1239

attribute.func_globals,

1240

attribute.func_name,

1241

attribute.func_defaults,

1242

attribute.func_closure)))

1148

1243

# Copy annotations, if any

1149

1244

try:

1150

attr[attrname]._dbus_annotations = (

1151

dict(attribute._dbus_annotations))

1245

attr[attrname]._dbus_annotations = dict(

1246

attribute._dbus_annotations)

1152

1247

except AttributeError:

1153

1248

pass

1154

1249

# Is this a D-Bus property?

1157

1252

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

1158

1253

# property with the alternate D-Bus interface

1159

1254

# name. Add it to the class.

1160

attr[attrname] = (dbus_service_property

1161

(alt_interface,

1162

attribute._dbus_signature,

1163

attribute._dbus_access,

1164

attribute

1165

._dbus_get_args_options

1166

["byte_arrays"])

1167

(types.FunctionType

1168

(attribute.func_code,

1169

attribute.func_globals,

1170

attribute.func_name,

1171

attribute.func_defaults,

1172

attribute.func_closure)))

1255

attr[attrname] = (dbus_service_property(

1256

alt_interface, attribute._dbus_signature,

1257

attribute._dbus_access,

1258

attribute._dbus_get_args_options

1259

["byte_arrays"])

1260

(types.FunctionType(

1261

attribute.func_code,

1262

attribute.func_globals,

1263

attribute.func_name,

1264

attribute.func_defaults,

1265

attribute.func_closure)))

1173

1266

# Copy annotations, if any

1174

1267

try:

1175

attr[attrname]._dbus_annotations = (

1176

dict(attribute._dbus_annotations))

1268

attr[attrname]._dbus_annotations = dict(

1269

attribute._dbus_annotations)

1177

1270

except AttributeError:

1178

1271

pass

1179

1272

# Is this a D-Bus interface?

1182

1275

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

1183

1276

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

1184

1277

# to the class.

1185

attr[attrname] = (dbus_interface_annotations

1186

(alt_interface)

1187

(types.FunctionType

1188

(attribute.func_code,

1189

attribute.func_globals,

1190

attribute.func_name,

1191

attribute.func_defaults,

1192

attribute.func_closure)))

1278

attr[attrname] = (

1279

dbus_interface_annotations(alt_interface)

1280

(types.FunctionType(attribute.func_code,

1281

attribute.func_globals,

1282

attribute.func_name,

1283

attribute.func_defaults,

1284

attribute.func_closure)))

1193

1285

if deprecate:

1194

1286

# Deprecate all alternate interfaces

1195

1287

iname="_AlternateDBusNames_interface_annotation{}"

1196

1288

for interface_name in interface_names:

1289

1197

1290

@dbus_interface_annotations(interface_name)

1198

1291

def func(self):

1199

1292

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

1200

"true" }

1293

"true" }

1201

1294

# Find an unused name

1202

1295

for aname in (iname.format(i)

1203

1296

for i in itertools.count()):

1208

1301

# Replace the class with a new subclass of it with

1209

1302

# methods, signals, etc. as created above.

1210

1303

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

1211

(cls,), attr)

1304

(cls, ), attr)

1212

1305

return cls

1306

1213

1307

return wrapper

1214

1308

1215

1309

1216

1310

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

1217

"se.bsnet.fukt.Mandos"})

1311

"se.bsnet.fukt.Mandos"})

1218

1312

class ClientDBus(Client, DBusObjectWithProperties):

1219

1313

"""A Client class using D-Bus

1220

1314

1224

1318

"""

1225

1319

1226

1320

runtime_expansions = (Client.runtime_expansions

1227

+ ("dbus_object_path",))

1321

+ ("dbus_object_path", ))

1228

1322

1229

1323

_interface = "se.recompile.Mandos.Client"

1230

1324

1238

1332

client_object_name = str(self.name).translate(

1239

1333

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

1240

1334

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

1241

self.dbus_object_path = (dbus.ObjectPath

1242

("/clients/" + client_object_name))

1335

self.dbus_object_path = dbus.ObjectPath(

1336

"/clients/" + client_object_name)

1243

1337

DBusObjectWithProperties.__init__(self, self.bus,

1244

1338

self.dbus_object_path)

1245

1339

1246

def notifychangeproperty(transform_func,

1247

dbus_name, type_func=lambda x: x,

1248

variant_level=1, invalidate_only=False,

1340

def notifychangeproperty(transform_func, dbus_name,

1341

type_func=lambda x: x,

1342

variant_level=1,

1343

invalidate_only=False,

1249

1344

_interface=_interface):

1250

1345

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

1251

1346

its changes to DBus.

1258

1353

variant_level: D-Bus variant level. Default: 1

1259

1354

"""

1260

1355

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

1356

1261

1357

def setter(self, value):

1262

1358

if hasattr(self, "dbus_object_path"):

1263

1359

if (not hasattr(self, attrname) or

1264

1360

type_func(getattr(self, attrname, None))

1265

1361

!= type_func(value)):

1266

1362

if invalidate_only:

1267

self.PropertiesChanged(_interface,

1268

dbus.Dictionary(),

1269

dbus.Array

1270

((dbus_name,)))

1363

self.PropertiesChanged(

1364

_interface, dbus.Dictionary(),

1365

dbus.Array((dbus_name, )))

1271

1366

else:

1272

dbus_value = transform_func(type_func(value),

1273

variant_level

1274

=variant_level)

1367

dbus_value = transform_func(

1368

type_func(value),

1369

variant_level = variant_level)

1275

1370

self.PropertyChanged(dbus.String(dbus_name),

1276

1371

dbus_value)

1277

self.PropertiesChanged(_interface,

1278

dbus.Dictionary({

1279

dbus.String(dbus_name):

1280

dbus_value }), dbus.Array())

1372

self.PropertiesChanged(

1373

_interface,

1374

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

1375

dbus_value }),

1376

dbus.Array())

1281

1377

setattr(self, attrname, value)

1282

1378

1283

1379

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

1289

1385

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

1290

1386

last_enabled = notifychangeproperty(datetime_to_dbus,

1291

1387

"LastEnabled")

1292

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

1293

type_func = lambda checker:

1294

checker is not None)

1388

checker = notifychangeproperty(

1389

dbus.Boolean, "CheckerRunning",

1390

type_func = lambda checker: checker is not None)

1295

1391

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1296

1392

"LastCheckedOK")

1297

1393

last_checker_status = notifychangeproperty(dbus.Int16,

1300

1396

datetime_to_dbus, "LastApprovalRequest")

1301

1397

approved_by_default = notifychangeproperty(dbus.Boolean,

1302

1398

"ApprovedByDefault")

1303

approval_delay = notifychangeproperty(dbus.UInt64,

1304

"ApprovalDelay",

1305

type_func =

1306

lambda td: td.total_seconds()

1307

* 1000)

1399

approval_delay = notifychangeproperty(

1400

dbus.UInt64, "ApprovalDelay",

1401

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

1308

1402

approval_duration = notifychangeproperty(

1309

1403

dbus.UInt64, "ApprovalDuration",

1310

1404

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

1311

1405

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

1312

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

1313

type_func = lambda td:

1314

td.total_seconds() * 1000)

1406

timeout = notifychangeproperty(

1407

dbus.UInt64, "Timeout",

1408

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

1315

1409

extended_timeout = notifychangeproperty(

1316

1410

dbus.UInt64, "ExtendedTimeout",

1317

1411

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

1318

interval = notifychangeproperty(dbus.UInt64,

1319

"Interval",

1320

type_func =

1321

lambda td: td.total_seconds()

1322

* 1000)

1412

interval = notifychangeproperty(

1413

dbus.UInt64, "Interval",

1414

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

1323

1415

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

1324

1416

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

1325

1417

invalidate_only=True)

1335

1427

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

1336

1428

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

1337

1429

1338

def checker_callback(self, pid, condition, command,

1339

*args, **kwargs):

1340

self.checker_callback_tag = None

1341

self.checker = None

1342

if os.WIFEXITED(condition):

1343

exitstatus = os.WEXITSTATUS(condition)

1430

def checker_callback(self, source, condition,

1431

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

1432

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

1433

connection, command, *args,

1434

**kwargs)

1435

exitstatus = self.last_checker_status

1436

if exitstatus >= 0:

1344

1437

# Emit D-Bus signal

1345

1438

self.CheckerCompleted(dbus.Int16(exitstatus),

1346

dbus.Int64(condition),

1439

# This is specific to GNU libC

1440

dbus.Int64(exitstatus << 8),

1347

1441

dbus.String(command))

1348

1442

else:

1349

1443

# Emit D-Bus signal

1350

1444

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

1351

dbus.Int64(condition),

1445

dbus.Int64(

1446

# This is specific to GNU libC

1447

(exitstatus << 8)

1448

| self.last_checker_signal),

1352

1449

dbus.String(command))

1353

1354

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

1355

*args, **kwargs)

1450

return ret

1356

1451

1357

1452

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

1358

1453

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

1433

1528

self.checked_ok()

1434

1529

1435

1530

# Enable - method

1531

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

1436

1532

@dbus.service.method(_interface)

1437

1533

def Enable(self):

1438

1534

"D-Bus method"

1439

1535

self.enable()

1440

1536

1441

1537

# StartChecker - method

1538

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

1442

1539

@dbus.service.method(_interface)

1443

1540

def StartChecker(self):

1444

1541

"D-Bus method"

1445

1542

self.start_checker()

1446

1543

1447

1544

# Disable - method

1545

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

1448

1546

@dbus.service.method(_interface)

1449

1547

def Disable(self):

1450

1548

"D-Bus method"

1451

1549

self.disable()

1452

1550

1453

1551

# StopChecker - method

1552

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

1454

1553

@dbus.service.method(_interface)

1455

1554

def StopChecker(self):

1456

1555

self.stop_checker()

1463

1562

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

1464

1563

1465

1564

# ApprovedByDefault - property

1466

@dbus_service_property(_interface, signature="b",

1565

@dbus_service_property(_interface,

1566

signature="b",

1467

1567

access="readwrite")

1468

1568

def ApprovedByDefault_dbus_property(self, value=None):

1469

1569

if value is None: # get

1471

1571

self.approved_by_default = bool(value)

1472

1572

1473

1573

# ApprovalDelay - property

1474

@dbus_service_property(_interface, signature="t",

1574

@dbus_service_property(_interface,

1575

signature="t",

1475

1576

access="readwrite")

1476

1577

def ApprovalDelay_dbus_property(self, value=None):

1477

1578

if value is None: # get

1480

1581

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

1481

1582

1482

1583

# ApprovalDuration - property

1483

@dbus_service_property(_interface, signature="t",

1584

@dbus_service_property(_interface,

1585

signature="t",

1484

1586

access="readwrite")

1485

1587

def ApprovalDuration_dbus_property(self, value=None):

1486

1588

if value is None: # get

1489

1591

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

1490

1592

1491

1593

# Name - property

1594

@dbus_annotations(

1595

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

1492

1596

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

1493

1597

def Name_dbus_property(self):

1494

1598

return dbus.String(self.name)

1495

1599

1496

1600

# Fingerprint - property

1601

@dbus_annotations(

1602

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

1497

1603

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

1498

1604

def Fingerprint_dbus_property(self):

1499

1605

return dbus.String(self.fingerprint)

1500

1606

1501

1607

# Host - property

1502

@dbus_service_property(_interface, signature="s",

1608

@dbus_service_property(_interface,

1609

signature="s",

1503

1610

access="readwrite")

1504

1611

def Host_dbus_property(self, value=None):

1505

1612

if value is None: # get

1507

1614

self.host = str(value)

1508

1615

1509

1616

# Created - property

1617

@dbus_annotations(

1618

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

1510

1619

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

1511

1620

def Created_dbus_property(self):

1512

1621

return datetime_to_dbus(self.created)

1517

1626

return datetime_to_dbus(self.last_enabled)

1518

1627

1519

1628

# Enabled - property

1520

@dbus_service_property(_interface, signature="b",

1629

@dbus_service_property(_interface,

1630

signature="b",

1521

1631

access="readwrite")

1522

1632

def Enabled_dbus_property(self, value=None):

1523

1633

if value is None: # get

1528

1638

self.disable()

1529

1639

1530

1640

# LastCheckedOK - property

1531

@dbus_service_property(_interface, signature="s",

1641

@dbus_service_property(_interface,

1642

signature="s",

1532

1643

access="readwrite")

1533

1644

def LastCheckedOK_dbus_property(self, value=None):

1534

1645

if value is not None:

1537

1648

return datetime_to_dbus(self.last_checked_ok)

1538

1649

1539

1650

# LastCheckerStatus - property

1540

@dbus_service_property(_interface, signature="n",

1541

access="read")

1651

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

1542

1652

def LastCheckerStatus_dbus_property(self):

1543

1653

return dbus.Int16(self.last_checker_status)

1544

1654

1553

1663

return datetime_to_dbus(self.last_approval_request)

1554

1664

1555

1665

# Timeout - property

1556

@dbus_service_property(_interface, signature="t",

1666

@dbus_service_property(_interface,

1667

signature="t",

1557

1668

access="readwrite")

1558

1669

def Timeout_dbus_property(self, value=None):

1559

1670

if value is None: # get

1572

1683

is None):

1573

1684

return

1574

1685

gobject.source_remove(self.disable_initiator_tag)

1575

self.disable_initiator_tag = (

1576

gobject.timeout_add(

1577

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

1578

* 1000), self.disable))

1686

self.disable_initiator_tag = gobject.timeout_add(

1687

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

1688

self.disable)

1579

1689

1580

1690

# ExtendedTimeout - property

1581

@dbus_service_property(_interface, signature="t",

1691

@dbus_service_property(_interface,

1692

signature="t",

1582

1693

access="readwrite")

1583

1694

def ExtendedTimeout_dbus_property(self, value=None):

1584

1695

if value is None: # get

1587

1698

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

1588

1699

1589

1700

# Interval - property

1590

@dbus_service_property(_interface, signature="t",

1701

@dbus_service_property(_interface,

1702

signature="t",

1591

1703

access="readwrite")

1592

1704

def Interval_dbus_property(self, value=None):

1593

1705

if value is None: # get

1598

1710

if self.enabled:

1599

1711

# Reschedule checker run

1600

1712

gobject.source_remove(self.checker_initiator_tag)

1601

self.checker_initiator_tag = (gobject.timeout_add

1602

(value, self.start_checker))

1603

self.start_checker() # Start one now, too

1713

self.checker_initiator_tag = gobject.timeout_add(

1714

value, self.start_checker)

1715

self.start_checker() # Start one now, too

1604

1716

1605

1717

# Checker - property

1606

@dbus_service_property(_interface, signature="s",

1718

@dbus_service_property(_interface,

1719

signature="s",

1607

1720

access="readwrite")

1608

1721

def Checker_dbus_property(self, value=None):

1609

1722

if value is None: # get

1611

1724

self.checker_command = str(value)

1612

1725

1613

1726

# CheckerRunning - property

1614

@dbus_service_property(_interface, signature="b",

1727

@dbus_service_property(_interface,

1728

signature="b",

1615

1729

access="readwrite")

1616

1730

def CheckerRunning_dbus_property(self, value=None):

1617

1731

if value is None: # get

1622

1736

self.stop_checker()

1623

1737

1624

1738

# ObjectPath - property

1739

@dbus_annotations(

1740

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

1741

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

1625

1742

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

1626

1743

def ObjectPath_dbus_property(self):

1627

1744

return self.dbus_object_path # is already a dbus.ObjectPath

1628

1745

1629

1746

# Secret = property

1630

@dbus_service_property(_interface, signature="ay",

1631

access="write", byte_arrays=True)

1747

@dbus_annotations(

1748

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

1749

"invalidates"})

1750

@dbus_service_property(_interface,

1751

signature="ay",

1752

access="write",

1753

byte_arrays=True)

1632

1754

def Secret_dbus_property(self, value):

1633

1755

self.secret = bytes(value)

1634

1756

1640

1762

self._pipe = child_pipe

1641

1763

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

1642

1764

if not self._pipe.recv():

1643

raise KeyError()

1765

raise KeyError(fpr)

1644

1766

1645

1767

def __getattribute__(self, name):

1646

1768

if name == '_pipe':

1650

1772

if data[0] == 'data':

1651

1773

return data[1]

1652

1774

if data[0] == 'function':

1775

1653

1776

def func(*args, **kwargs):

1654

1777

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

1655

1778

return self._pipe.recv()[1]

1779

1656

1780

return func

1657

1781

1658

1782

def __setattr__(self, name, value):

1674

1798

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

1675

1799

self.server.child_pipe.fileno())

1676

1800

1677

session = (gnutls.connection

1678

.ClientSession(self.request,

1679

gnutls.connection

1680

.X509Credentials()))

1801

session = gnutls.connection.ClientSession(

1802

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

1681

1803

1682

1804

# Note: gnutls.connection.X509Credentials is really a

1683

1805

# generic GnuTLS certificate credentials object so long as

1692

1814

priority = self.server.gnutls_priority

1693

1815

if priority is None:

1694

1816

priority = "NORMAL"

1695

(gnutls.library.functions

1696

.gnutls_priority_set_direct(session._c_object,

1697

priority, None))

1817

gnutls.library.functions.gnutls_priority_set_direct(

1818

session._c_object, priority, None)

1698

1819

1699

1820

# Start communication using the Mandos protocol

1700

1821

# Get protocol number

1720

1841

approval_required = False

1721

1842

try:

1722

1843

try:

1723

fpr = self.fingerprint(self.peer_certificate

1724

(session))

1844

fpr = self.fingerprint(

1845

self.peer_certificate(session))

1725

1846

except (TypeError,

1726

1847

gnutls.errors.GNUTLSError) as error:

1727

1848

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

1742

1863

while True:

1743

1864

if not client.enabled:

1744

1865

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

1745

client.name)

1866

client.name)

1746

1867

if self.server.use_dbus:

1747

1868

# Emit D-Bus signal

1748

1869

client.Rejected("Disabled")

1795

1916

logger.warning("gnutls send failed",

1796

1917

exc_info=error)

1797

1918

return

1798

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

1799

sent, len(client.secret)

1800

- (sent_size + sent))

1919

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

1920

len(client.secret) - (sent_size

1921

+ sent))

1801

1922

sent_size += sent

1802

1923

1803

1924

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

1820

1941

def peer_certificate(session):

1821

1942

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

1822

1943

# If not an OpenPGP certificate...

1823

if (gnutls.library.functions

1824

.gnutls_certificate_type_get(session._c_object)

1944

if (gnutls.library.functions.gnutls_certificate_type_get(

1945

session._c_object)

1825

1946

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1826

1947

# ...do the normal thing

1827

1948

return session.peer_certificate

1841

1962

def fingerprint(openpgp):

1842

1963

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1843

1964

# New GnuTLS "datum" with the OpenPGP public key

1844

datum = (gnutls.library.types

1845

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

1846

ctypes.POINTER

1847

(ctypes.c_ubyte)),

1848

ctypes.c_uint(len(openpgp))))

1965

datum = gnutls.library.types.gnutls_datum_t(

1966

ctypes.cast(ctypes.c_char_p(openpgp),

1967

ctypes.POINTER(ctypes.c_ubyte)),

1968

ctypes.c_uint(len(openpgp)))

1849

1969

# New empty GnuTLS certificate

1850

1970

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1851

(gnutls.library.functions

1852

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1971

gnutls.library.functions.gnutls_openpgp_crt_init(

1972

ctypes.byref(crt))

1853

1973

# Import the OpenPGP public key into the certificate

1854

(gnutls.library.functions

1855

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

1856

gnutls.library.constants

1857

.GNUTLS_OPENPGP_FMT_RAW))

1974

gnutls.library.functions.gnutls_openpgp_crt_import(

1975

crt, ctypes.byref(datum),

1976

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1858

1977

# Verify the self signature in the key

1859

1978

crtverify = ctypes.c_uint()

1860

(gnutls.library.functions

1861

.gnutls_openpgp_crt_verify_self(crt, 0,

1862

ctypes.byref(crtverify)))

1979

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1980

crt, 0, ctypes.byref(crtverify))

1863

1981

if crtverify.value != 0:

1864

1982

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1865

raise (gnutls.errors.CertificateSecurityError

1866

("Verify failed"))

1983

raise gnutls.errors.CertificateSecurityError(

1984

"Verify failed")

1867

1985

# New buffer for the fingerprint

1868

1986

buf = ctypes.create_string_buffer(20)

1869

1987

buf_len = ctypes.c_size_t()

1870

1988

# Get the fingerprint from the certificate into the buffer

1871

(gnutls.library.functions

1872

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

1873

ctypes.byref(buf_len)))

1989

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1990

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

1874

1991

# Deinit the certificate

1875

1992

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1876

1993

# Convert the buffer to a Python bytestring

1882

1999

1883

2000

class MultiprocessingMixIn(object):

1884

2001

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

2002

1885

2003

def sub_process_main(self, request, address):

1886

2004

try:

1887

2005

self.finish_request(request, address)

1899

2017

1900

2018

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1901

2019

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

2020

1902

2021

def process_request(self, request, client_address):

1903

2022

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

1904

2023

1925

2044

interface: None or a network interface name (string)

1926

2045

use_ipv6: Boolean; to use IPv6 or not

1927

2046

"""

2047

1928

2048

def __init__(self, server_address, RequestHandlerClass,

1929

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

2049

interface=None,

2050

use_ipv6=True,

2051

socketfd=None):

1930

2052

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

1931

2053

creating a new one with socket.socket().

1932

2054

"""

1973

2095

self.interface)

1974

2096

else:

1975

2097

try:

1976

self.socket.setsockopt(socket.SOL_SOCKET,

1977

SO_BINDTODEVICE,

1978

(self.interface + "\0")

1979

.encode("utf-8"))

2098

self.socket.setsockopt(

2099

socket.SOL_SOCKET, SO_BINDTODEVICE,

2100

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

1980

2101

except socket.error as error:

1981

2102

if error.errno == errno.EPERM:

1982

2103

logger.error("No permission to bind to"

2000

2121

self.server_address = (any_address,

2001

2122

self.server_address[1])

2002

2123

elif not self.server_address[1]:

2003

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

2004

0)

2124

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

2005

2125

# if self.interface:

2006

2126

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

2007

2127

# 0, # port

2021

2141

2022

2142

Assumes a gobject.MainLoop event loop.

2023

2143

"""

2144

2024

2145

def __init__(self, server_address, RequestHandlerClass,

2025

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

2026

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

2146

interface=None,

2147

use_ipv6=True,

2148

clients=None,

2149

gnutls_priority=None,

2150

use_dbus=True,

2151

socketfd=None):

2027

2152

self.enabled = False

2028

2153

self.clients = clients

2029

2154

if self.clients is None:

2035

2160

interface = interface,

2036

2161

use_ipv6 = use_ipv6,

2037

2162

socketfd = socketfd)

2163

2038

2164

def server_activate(self):

2039

2165

if self.enabled:

2040

2166

return socketserver.TCPServer.server_activate(self)

2044

2170

2045

2171

def add_pipe(self, parent_pipe, proc):

2046

2172

# Call "handle_ipc" for both data and EOF events

2047

gobject.io_add_watch(parent_pipe.fileno(),

2048

gobject.IO_IN | gobject.IO_HUP,

2049

functools.partial(self.handle_ipc,

2050

parent_pipe =

2051

parent_pipe,

2052

proc = proc))

2173

gobject.io_add_watch(

2174

parent_pipe.fileno(),

2175

gobject.IO_IN | gobject.IO_HUP,

2176

functools.partial(self.handle_ipc,

2177

parent_pipe = parent_pipe,

2178

proc = proc))

2053

2179

2054

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

2055

proc = None, client_object=None):

2180

def handle_ipc(self, source, condition,

2181

parent_pipe=None,

2182

proc = None,

2183

client_object=None):

2056

2184

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

2057

2185

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

2058

2186

# Wait for other process to exit

2081

2209

parent_pipe.send(False)

2082

2210

return False

2083

2211

2084

gobject.io_add_watch(parent_pipe.fileno(),

2085

gobject.IO_IN | gobject.IO_HUP,

2086

functools.partial(self.handle_ipc,

2087

parent_pipe =

2088

parent_pipe,

2089

proc = proc,

2090

client_object =

2091

client))

2212

gobject.io_add_watch(

2213

parent_pipe.fileno(),

2214

gobject.IO_IN | gobject.IO_HUP,

2215

functools.partial(self.handle_ipc,

2216

parent_pipe = parent_pipe,

2217

proc = proc,

2218

client_object = client))

2092

2219

parent_pipe.send(True)

2093

2220

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

2094

2221

# same fileno

2100

2227

2101

2228

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

2102

2229

funcname)(*args,

2103

**kwargs)))

2230

**kwargs)))

2104

2231

2105

2232

if command == 'getattr':

2106

2233

attrname = request[1]

2107

if callable(client_object.__getattribute__(attrname)):

2108

parent_pipe.send(('function',))

2234

if isinstance(client_object.__getattribute__(attrname),

2235

collections.Callable):

2236

parent_pipe.send(('function', ))

2109

2237

else:

2110

parent_pipe.send(('data', client_object

2111

.__getattribute__(attrname)))

2238

parent_pipe.send((

2239

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

2112

2240

2113

2241

if command == 'setattr':

2114

2242

attrname = request[1]

2145

2273

# avoid excessive use of external libraries.

2146

2274

2147

2275

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

2148

Token = collections.namedtuple("Token",

2149

("regexp", # To match token; if

2150

# "value" is not None,

2151

# must have a "group"

2152

# containing digits

2153

"value", # datetime.timedelta or

2154

# None

2155

"followers")) # Tokens valid after

2156

# this token

2276

Token = collections.namedtuple("Token", (

2277

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

2278

# a "group" containing digits

2279

"value", # datetime.timedelta or None

2280

"followers")) # Tokens valid after this token

2157

2281

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

2158

2282

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

2159

2283

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

2160

2284

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

2161

2285

datetime.timedelta(seconds=1),

2162

frozenset((token_end,)))

2286

frozenset((token_end, )))

2163

2287

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

2164

2288

datetime.timedelta(minutes=1),

2165

2289

frozenset((token_second, token_end)))

2181

2305

frozenset((token_month, token_end)))

2182

2306

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

2183

2307

datetime.timedelta(weeks=1),

2184

frozenset((token_end,)))

2308

frozenset((token_end, )))

2185

2309

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

2186

2310

frozenset((token_year, token_month,

2187

2311

token_day, token_time,

2189

2313

# Define starting values

2190

2314

value = datetime.timedelta() # Value so far

2191

2315

found_token = None

2192

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

2316

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

2193

2317

s = duration # String left to parse

2194

2318

# Loop until end token is found

2195

2319

while found_token is not token_end:

2212

2336

break

2213

2337

else:

2214

2338

# No currently valid tokens were found

2215

raise ValueError("Invalid RFC 3339 duration")

2339

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

2340

.format(duration))

2216

2341

# End token found

2217

2342

return value

2218

2343

2255

2380

elif suffix == "w":

2256

2381

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

2257

2382

else:

2258

raise ValueError("Unknown suffix {!r}"

2259

.format(suffix))

2383

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

2260

2384

except IndexError as e:

2261

2385

raise ValueError(*(e.args))

2262

2386

timevalue += delta

2278

2402

# Close all standard open file descriptors

2279

2403

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

2280

2404

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

2281

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

2405

raise OSError(errno.ENODEV,

2406

"{} not a character device"

2282

2407

.format(os.devnull))

2283

2408

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

2284

2409

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

2350

2475

"port": "",

2351

2476

"debug": "False",

2352

2477

"priority":

2353

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

2478

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

2479

":+SIGN-DSA-SHA256",

2354

2480

"servicename": "Mandos",

2355

2481

"use_dbus": "True",

2356

2482

"use_ipv6": "True",

2360

2486

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

2361

2487

"foreground": "False",

2362

2488

"zeroconf": "True",

2363

}

2489

}

2364

2490

2365

2491

# Parse config file for server-global settings

2366

2492

server_config = configparser.SafeConfigParser(server_defaults)

2367

2493

del server_defaults

2368

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

2369

"mandos.conf"))

2494

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

2370

2495

# Convert the SafeConfigParser object to a dict

2371

2496

server_settings = server_config.defaults()

2372

2497

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

2390

2515

# Override the settings from the config file with command line

2391

2516

# options, if set.

2392

2517

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

2393

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

2394

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

2395

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

2518

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

2519

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

2520

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

2396

2521

value = getattr(options, option)

2397

2522

if value is not None:

2398

2523

server_settings[option] = value

2413

2538

2414

2539

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

2415

2540

2416

if (not server_settings["zeroconf"] and

2417

not (server_settings["port"]

2418

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

2419

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

2420

" Zeroconf")

2541

if (not server_settings["zeroconf"]

2542

and not (server_settings["port"]

2543

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

2544

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

2421

2545

2422

2546

# For convenience

2423

2547

debug = server_settings["debug"]

2439

2563

initlogger(debug, level)

2440

2564

2441

2565

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

2442

syslogger.setFormatter(logging.Formatter

2443

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

2444

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

2445

.format(server_settings

2446

["servicename"])))

2566

syslogger.setFormatter(

2567

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

2568

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

2569

server_settings["servicename"])))

2447

2570

2448

2571

# Parse config file with clients

2449

2572

client_config = configparser.SafeConfigParser(Client

2457

2580

socketfd = None

2458

2581

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

2459

2582

socketfd = server_settings["socket"]

2460

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

2461

server_settings["port"]),

2462

ClientHandler,

2463

interface=(server_settings["interface"]

2464

or None),

2465

use_ipv6=use_ipv6,

2466

gnutls_priority=

2467

server_settings["priority"],

2468

use_dbus=use_dbus,

2469

socketfd=socketfd)

2583

tcp_server = MandosServer(

2584

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

2585

ClientHandler,

2586

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

2587

use_ipv6=use_ipv6,

2588

gnutls_priority=server_settings["priority"],

2589

use_dbus=use_dbus,

2590

socketfd=socketfd)

2470

2591

if not foreground:

2471

2592

pidfilename = "/run/mandos.pid"

2472

2593

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

2473

2594

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

2474

2595

pidfile = None

2475

2596

try:

2476

pidfile = open(pidfilename, "w")

2597

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

2477

2598

except IOError as e:

2478

2599

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

2479

2600

exc_info=e)

2506

2627

def debug_gnutls(level, string):

2507

2628

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

2508

2629

2509

(gnutls.library.functions

2510

.gnutls_global_set_log_function(debug_gnutls))

2630

gnutls.library.functions.gnutls_global_set_log_function(

2631

debug_gnutls)

2511

2632

2512

2633

# Redirect stdin so all checkers get /dev/null

2513

2634

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

2533

2654

if use_dbus:

2534

2655

try:

2535

2656

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

2536

bus, do_not_queue=True)

2537

old_bus_name = (dbus.service.BusName

2538

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

2539

do_not_queue=True))

2540

except dbus.exceptions.NameExistsException as e:

2657

bus,

2658

do_not_queue=True)

2659

old_bus_name = dbus.service.BusName(

2660

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

2661

do_not_queue=True)

2662

except dbus.exceptions.DBusException as e:

2541

2663

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

2542

2664

use_dbus = False

2543

2665

server_settings["use_dbus"] = False

2544

2666

tcp_server.use_dbus = False

2545

2667

if zeroconf:

2546

2668

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2547

service = AvahiServiceToSyslog(name =

2548

server_settings["servicename"],

2549

servicetype = "_mandos._tcp",

2550

protocol = protocol, bus = bus)

2669

service = AvahiServiceToSyslog(

2670

name = server_settings["servicename"],

2671

servicetype = "_mandos._tcp",

2672

protocol = protocol,

2673

bus = bus)

2551

2674

if server_settings["interface"]:

2552

service.interface = (if_nametoindex

2553

(server_settings["interface"]

2554

.encode("utf-8")))

2675

service.interface = if_nametoindex(

2676

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

2555

2677

2556

2678

global multiprocessing_manager

2557

2679

multiprocessing_manager = multiprocessing.Manager()

2576

2698

if server_settings["restore"]:

2577

2699

try:

2578

2700

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

2579

clients_data, old_client_settings = (pickle.load

2580

(stored_state))

2701

clients_data, old_client_settings = pickle.load(

2702

stored_state)

2581

2703

os.remove(stored_state_path)

2582

2704

except IOError as e:

2583

2705

if e.errno == errno.ENOENT:

2584

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

2585

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

2706

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

2707

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

2586

2708

else:

2587

2709

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

2588

2710

exc_info=e)

2589

2711

raise

2590

2712

except EOFError as e:

2591

2713

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

2592

"EOFError:", exc_info=e)

2714

"EOFError:",

2715

exc_info=e)

2593

2716

2594

2717

with PGPEngine() as pgp:

2595

2718

for client_name, client in clients_data.items():

2607

2730

# For each value in new config, check if it

2608

2731

# differs from the old config value (Except for

2609

2732

# the "secret" attribute)

2610

if (name != "secret" and

2611

value != old_client_settings[client_name]

2612

[name]):

2733

if (name != "secret"

2734

and (value !=

2735

old_client_settings[client_name][name])):

2613

2736

client[name] = value

2614

2737

except KeyError:

2615

2738

pass

2616

2739

2617

2740

# Clients who has passed its expire date can still be

2618

# enabled if its last checker was successful. Clients

2741

# enabled if its last checker was successful. A Client

2619

2742

# whose checker succeeded before we stored its state is

2620

2743

# assumed to have successfully run all checkers during

2621

2744

# downtime.

2624

2747

if not client["last_checked_ok"]:

2625

2748

logger.warning(

2626

2749

"disabling client {} - Client never "

2627

"performed a successful checker"

2628

.format(client_name))

2750

"performed a successful checker".format(

2751

client_name))

2629

2752

client["enabled"] = False

2630

2753

elif client["last_checker_status"] != 0:

2631

2754

logger.warning(

2632

2755

"disabling client {} - Client last"

2633

" checker failed with error code {}"

2634

.format(client_name,

2635

client["last_checker_status"]))

2756

" checker failed with error code"

2757

" {}".format(

2758

client_name,

2759

client["last_checker_status"]))

2636

2760

client["enabled"] = False

2637

2761

else:

2638

client["expires"] = (datetime.datetime

2639

.utcnow()

2640

+ client["timeout"])

2762

client["expires"] = (

2763

datetime.datetime.utcnow()

2764

+ client["timeout"])

2641

2765

logger.debug("Last checker succeeded,"

2642

" keeping {} enabled"

2643

.format(client_name))

2766

" keeping {} enabled".format(

2767

client_name))

2644

2768

try:

2645

client["secret"] = (

2646

pgp.decrypt(client["encrypted_secret"],

2647

client_settings[client_name]

2648

["secret"]))

2769

client["secret"] = pgp.decrypt(

2770

client["encrypted_secret"],

2771

client_settings[client_name]["secret"])

2649

2772

except PGPError:

2650

2773

# If decryption fails, we use secret from new settings

2651

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

2652

.format(client_name))

2653

client["secret"] = (

2654

client_settings[client_name]["secret"])

2774

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

2775

client_name))

2776

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

2777

["secret"])

2655

2778

2656

2779

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

2657

2780

for client_name in (set(old_client_settings)

2664

2787

# Create all client objects

2665

2788

for client_name, client in clients_data.items():

2666

2789

tcp_server.clients[client_name] = client_class(

2667

name = client_name, settings = client,

2790

name = client_name,

2791

settings = client,

2668

2792

server_settings = server_settings)

2669

2793

2670

2794

if not tcp_server.clients:

2672

2796

2673

2797

if not foreground:

2674

2798

if pidfile is not None:

2799

pid = os.getpid()

2675

2800

try:

2676

2801

with pidfile:

2677

pid = os.getpid()

2678

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

2802

print(pid, file=pidfile)

2679

2803

except IOError:

2680

2804

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

2681

2805

pidfilename, pid)

2686

2810

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

2687

2811

2688

2812

if use_dbus:

2689

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

2690

"se.bsnet.fukt.Mandos"})

2691

class MandosDBusService(DBusObjectWithProperties):

2813

2814

@alternate_dbus_interfaces(

2815

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

2816

class MandosDBusService(DBusObjectWithAnnotations):

2692

2817

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

2818

2693

2819

def __init__(self):

2694

2820

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

2821

2695

2822

_interface = "se.recompile.Mandos"

2696

2823

2697

@dbus_interface_annotations(_interface)

2698

def _foo(self):

2699

return { "org.freedesktop.DBus.Property"

2700

".EmitsChangedSignal":

2701

"false"}

2702

2703

2824

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

2704

2825

def ClientAdded(self, objpath):

2705

2826

"D-Bus signal"

2718

2839

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

2719

2840

def GetAllClients(self):

2720

2841

"D-Bus method"

2721

return dbus.Array(c.dbus_object_path

2722

for c in

2842

return dbus.Array(c.dbus_object_path for c in

2723

2843

tcp_server.clients.itervalues())

2724

2844

2725

2845

@dbus.service.method(_interface,

2774

2894

# + secret.

2775

2895

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

2776

2896

"checker", "server_settings" }

2777

for name, typ in (inspect.getmembers

2778

(dbus.service.Object)):

2897

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

2898

.Object):

2779

2899

exclude.add(name)

2780

2900

2781

2901

client_dict["encrypted_secret"] = (client

2788

2908

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

2789

2909

2790

2910

try:

2791

with (tempfile.NamedTemporaryFile

2792

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

2793

dir=os.path.dirname(stored_state_path),

2794

delete=False)) as stored_state:

2911

with tempfile.NamedTemporaryFile(

2912

mode='wb',

2913

suffix=".pickle",

2914

prefix='clients-',

2915

dir=os.path.dirname(stored_state_path),

2916

delete=False) as stored_state:

2795

2917

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

2796

tempname=stored_state.name

2918

tempname = stored_state.name

2797

2919

os.rename(tempname, stored_state_path)

2798

2920

except (IOError, OSError) as e:

2799

2921

if not debug:

2818

2940

client.disable(quiet=True)

2819

2941

if use_dbus:

2820

2942

# Emit D-Bus signal

2821

mandos_dbus_service.ClientRemoved(client

2822

.dbus_object_path,

2823

client.name)

2943

mandos_dbus_service.ClientRemoved(

2944

client.dbus_object_path, client.name)

2824

2945

client_settings.clear()

2825

2946

2826

2947

atexit.register(cleanup)

2879

3000

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

2880

3001

cleanup()

2881

3002

3003

2882

3004

if __name__ == '__main__':

2883

3005

main()