/mandos/trunk : revision 654

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

78

69

import tempfile

79

70

import itertools

80

71

import collections

81

import codecs

82

72

83

73

import dbus

84

74

import dbus.service

85

try:

86

import gobject

87

except ImportError:

88

from gi.repository import GObject as gobject

75

import gobject

89

76

import avahi

90

77

from dbus.mainloop.glib import DBusGMainLoop

91

78

import ctypes

101

88

except ImportError:

102

89

SO_BINDTODEVICE = None

103

90

104

if sys.version_info.major == 2:

105

str = unicode

106

107

version = "1.6.9"

91

version = "1.6.3"

108

92

stored_state_file = "clients.pickle"

109

93

110

94

logger = logging.getLogger()

111

syslogger = None

95

syslogger = (logging.handlers.SysLogHandler

96

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

97

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

112

98

113

99

try:

114

if_nametoindex = ctypes.cdll.LoadLibrary(

115

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

100

if_nametoindex = (ctypes.cdll.LoadLibrary

101

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

102

.if_nametoindex)

116

103

except (OSError, AttributeError):

117

118

104

def if_nametoindex(interface):

119

105

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

120

106

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

121

107

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

122

108

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

123

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

124

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

109

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

110

interface))

111

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

112

ifreq[16:20])[0]

125

113

return interface_index

126

114

127

115

128

116

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

129

117

"""init logger and add loglevel"""

130

118

131

global syslogger

132

syslogger = (logging.handlers.SysLogHandler(

133

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

134

address = "/dev/log"))

135

119

syslogger.setFormatter(logging.Formatter

136

120

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

137

121

' %(message)s'))

154

138

155

139

class PGPEngine(object):

156

140

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

157

158

141

def __init__(self):

159

142

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

160

143

self.gnupgargs = ['--batch',

199

182

200

183

def encrypt(self, data, password):

201

184

passphrase = self.password_encode(password)

202

with tempfile.NamedTemporaryFile(

203

dir=self.tempdir) as passfile:

185

with tempfile.NamedTemporaryFile(dir=self.tempdir

186

) as passfile:

204

187

passfile.write(passphrase)

205

188

passfile.flush()

206

189

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

217

200

218

201

def decrypt(self, data, password):

219

202

passphrase = self.password_encode(password)

220

with tempfile.NamedTemporaryFile(

221

dir = self.tempdir) as passfile:

203

with tempfile.NamedTemporaryFile(dir = self.tempdir

204

) as passfile:

222

205

passfile.write(passphrase)

223

206

passfile.flush()

224

207

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

228

211

stdin = subprocess.PIPE,

229

212

stdout = subprocess.PIPE,

230

213

stderr = subprocess.PIPE)

231

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

214

decrypted_plaintext, err = proc.communicate(input

215

= data)

232

216

if proc.returncode != 0:

233

217

raise PGPError(err)

234

218

return decrypted_plaintext

237

221

class AvahiError(Exception):

238

222

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

239

223

self.value = value

240

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

241

**kwargs)

242

224

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

225

def __unicode__(self):

226

return unicode(repr(self.value))

243

227

244

228

class AvahiServiceError(AvahiError):

245

229

pass

246

230

247

248

231

class AvahiGroupError(AvahiError):

249

232

pass

250

233

270

253

bus: dbus.SystemBus()

271

254

"""

272

255

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):

256

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

257

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

258

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

259

protocol = avahi.PROTO_UNSPEC, bus = None):

284

260

self.interface = interface

285

261

self.name = name

286

262

self.type = servicetype

296

272

self.bus = bus

297

273

self.entry_group_state_changed_match = None

298

274

299

def rename(self, remove=True):

275

def rename(self):

300

276

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

301

277

if self.rename_count >= self.max_renames:

302

278

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

303

279

" after %i retries, exiting.",

304

280

self.rename_count)

305

281

raise AvahiServiceError("Too many renames")

306

self.name = str(

307

self.server.GetAlternativeServiceName(self.name))

308

self.rename_count += 1

282

self.name = unicode(self.server

283

.GetAlternativeServiceName(self.name))

309

284

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

310

285

self.name)

311

if remove:

312

self.remove()

286

self.remove()

313

287

try:

314

288

self.add()

315

289

except dbus.exceptions.DBusException as error:

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)

290

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

291

self.cleanup()

292

os._exit(1)

293

self.rename_count += 1

324

294

325

295

def remove(self):

326

296

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

364

334

self.rename()

365

335

elif state == avahi.ENTRY_GROUP_FAILURE:

366

336

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

367

str(error))

368

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

337

unicode(error))

338

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

339

.format(error))

369

340

370

341

def cleanup(self):

371

342

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

381

352

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

382

353

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

383

354

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

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

}

355

bad_states = { avahi.SERVER_INVALID:

356

"Zeroconf server invalid",

357

avahi.SERVER_REGISTERING: None,

358

avahi.SERVER_COLLISION:

359

"Zeroconf server name collision",

360

avahi.SERVER_FAILURE:

361

"Zeroconf server failure" }

390

362

if state in bad_states:

391

363

if bad_states[state] is not None:

392

364

if error is None:

411

383

follow_name_owner_changes=True),

412

384

avahi.DBUS_INTERFACE_SERVER)

413

385

self.server.connect_to_signal("StateChanged",

414

self.server_state_changed)

386

self.server_state_changed)

415

387

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

416

388

417

389

418

390

class AvahiServiceToSyslog(AvahiService):

419

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

391

def rename(self):

420

392

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

421

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

422

syslogger.setFormatter(logging.Formatter(

423

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

424

.format(self.name)))

393

ret = AvahiService.rename(self)

394

syslogger.setFormatter(logging.Formatter

395

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

396

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

397

.format(self.name)))

425

398

return ret

426

399

427

400

401

def timedelta_to_milliseconds(td):

402

"Convert a datetime.timedelta() to milliseconds"

403

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

404

+ (td.seconds * 1000)

405

+ (td.microseconds // 1000))

406

407

428

408

class Client(object):

429

409

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

430

410

474

454

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

475

455

"last_approval_request", "last_checked_ok",

476

456

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

477

client_defaults = {

478

"timeout": "PT5M",

479

"extended_timeout": "PT15M",

480

"interval": "PT2M",

481

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

482

"host": "",

483

"approval_delay": "PT0S",

484

"approval_duration": "PT1S",

485

"approved_by_default": "True",

486

"enabled": "True",

487

}

457

client_defaults = { "timeout": "PT5M",

458

"extended_timeout": "PT15M",

459

"interval": "PT2M",

460

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

461

"host": "",

462

"approval_delay": "PT0S",

463

"approval_duration": "PT1S",

464

"approved_by_default": "True",

465

"enabled": "True",

466

}

467

468

def timeout_milliseconds(self):

469

"Return the 'timeout' attribute in milliseconds"

470

return timedelta_to_milliseconds(self.timeout)

471

472

def extended_timeout_milliseconds(self):

473

"Return the 'extended_timeout' attribute in milliseconds"

474

return timedelta_to_milliseconds(self.extended_timeout)

475

476

def interval_milliseconds(self):

477

"Return the 'interval' attribute in milliseconds"

478

return timedelta_to_milliseconds(self.interval)

479

480

def approval_delay_milliseconds(self):

481

return timedelta_to_milliseconds(self.approval_delay)

488

482

489

483

@staticmethod

490

484

def config_parser(config):

506

500

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

507

501

"enabled")

508

502

509

# Uppercase and remove spaces from fingerprint for later

510

# comparison purposes with return value from the

511

# fingerprint() function

512

503

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

513

504

.replace(" ", ""))

514

505

if "secret" in section:

519

510

"rb") as secfile:

520

511

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

521

512

else:

522

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

513

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

523

514

.format(section))

524

515

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

525

516

client["extended_timeout"] = string_to_delta(

542

533

server_settings = {}

543

534

self.server_settings = server_settings

544

535

# adding all client settings

545

for setting, value in settings.items():

536

for setting, value in settings.iteritems():

546

537

setattr(self, setting, value)

547

538

548

539

if self.enabled:

556

547

self.expires = None

557

548

558

549

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

550

# Uppercase and remove spaces from fingerprint for later

551

# comparison purposes with return value from the fingerprint()

552

# function

559

553

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

560

554

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

561

555

datetime.datetime.utcnow())

568

562

self.current_checker_command = None

569

563

self.approved = None

570

564

self.approvals_pending = 0

571

self.changedstate = multiprocessing_manager.Condition(

572

multiprocessing_manager.Lock())

573

self.client_structure = [attr

574

for attr in self.__dict__.iterkeys()

565

self.changedstate = (multiprocessing_manager

566

.Condition(multiprocessing_manager

567

.Lock()))

568

self.client_structure = [attr for attr in

569

self.__dict__.iterkeys()

575

570

if not attr.startswith("_")]

576

571

self.client_structure.append("client_structure")

577

572

578

for name, t in inspect.getmembers(

579

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

573

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

574

lambda obj:

575

isinstance(obj,

576

property)):

580

577

if not name.startswith("_"):

581

578

self.client_structure.append(name)

582

579

624

621

# and every interval from then on.

625

622

if self.checker_initiator_tag is not None:

626

623

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = gobject.timeout_add(

628

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

629

self.start_checker)

624

self.checker_initiator_tag = (gobject.timeout_add

625

(self.interval_milliseconds(),

626

self.start_checker))

630

627

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

631

628

if self.disable_initiator_tag is not None:

632

629

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = gobject.timeout_add(

634

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

630

self.disable_initiator_tag = (gobject.timeout_add

631

(self.timeout_milliseconds(),

632

self.disable))

635

633

# Also start a new checker *right now*.

636

634

self.start_checker()

637

635

646

644

vars(self))

647

645

self.checked_ok()

648

646

else:

649

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

647

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

648

vars(self))

650

649

else:

651

650

self.last_checker_status = -1

652

651

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

666

665

gobject.source_remove(self.disable_initiator_tag)

667

666

self.disable_initiator_tag = None

668

667

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

669

self.disable_initiator_tag = gobject.timeout_add(

670

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

668

self.disable_initiator_tag = (gobject.timeout_add

669

(timedelta_to_milliseconds

670

(timeout), self.disable))

671

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

672

673

def need_approval(self):

704

# Start a new checker if needed

705

if self.checker is None:

706

# Escape attributes for the shell

707

escaped_attrs = {

708

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

709

for attr in self.runtime_expansions }

707

escaped_attrs = dict(

708

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

709

for attr in

710

self.runtime_expansions)

710

711

try:

711

712

command = self.checker_command % escaped_attrs

712

713

except TypeError as error:

713

714

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

714

self.checker_command,

715

exc_info=error)

716

return True # Try again later

715

self.checker_command, exc_info=error)

716

return True # Try again later

717

self.current_checker_command = command

718

try:

719

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

720

self.name)

719

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

720

command, self.name)

721

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

722

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

723

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

732

"stderr": wnull })

733

self.checker = subprocess.Popen(command,

734

close_fds=True,

735

shell=True,

736

cwd="/",

735

shell=True, cwd="/",

737

736

**popen_args)

738

737

except OSError as error:

739

738

logger.error("Failed to start subprocess",

740

739

exc_info=error)

741

740

return True

742

self.checker_callback_tag = gobject.child_watch_add(

743

self.checker.pid, self.checker_callback, data=command)

741

self.checker_callback_tag = (gobject.child_watch_add

742

(self.checker.pid,

743

self.checker_callback,

744

data=command))

744

745

# The checker may have completed before the gobject

745

746

# watch was added. Check for this.

746

747

try:

777

778

self.checker = None

778

779

780

def dbus_service_property(dbus_interface,

781

signature="v",

782

access="readwrite",

783

byte_arrays=False):

781

def dbus_service_property(dbus_interface, signature="v",

782

access="readwrite", byte_arrays=False):

784

783

"""Decorators for marking methods of a DBusObjectWithProperties to

785

784

become properties on the D-Bus.

786

785

795

794

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

796

795

if byte_arrays and signature != "ay":

797

796

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

798

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

799

797

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

800

798

def decorator(func):

801

799

func._dbus_is_property = True

802

800

func._dbus_interface = dbus_interface

807

805

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

808

806

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

809

807

return func

810

811

808

return decorator

812

809

813

810

822

819

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

823

820

"false"}

824

821

"""

825

826

822

def decorator(func):

827

823

func._dbus_is_interface = True

828

824

func._dbus_interface = dbus_interface

829

825

func._dbus_name = dbus_interface

830

826

return func

831

832

827

return decorator

833

828

834

829

836

831

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

837

832

Usage:

838

833

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

842

834

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

843

835

access="r")

836

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

837

"org.freedesktop.DBus.Property."

838

"EmitsChangedSignal": "false"})

844

839

def Property_dbus_property(self):

845

840

return dbus.Boolean(False)

846

841

"""

847

848

842

def decorator(func):

849

843

func._dbus_annotations = annotations

850

844

return func

851

852

845

return decorator

853

846

854

847

855

848

class DBusPropertyException(dbus.exceptions.DBusException):

856

849

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

857

850

"""

858

pass

851

def __unicode__(self):

852

return unicode(str(self))

859

853

860

854

861

855

class DBusPropertyAccessException(DBusPropertyException):

885

879

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

886

880

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

887

881

"""

888

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

882

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

889

883

False)

890

884

891

885

def _get_all_dbus_things(self, thing):

892

886

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

893

887

"""

894

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

888

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

889

name),

895

890

athing.__get__(self))

896

891

for cls in self.__class__.__mro__

897

892

for name, athing in

898

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

893

inspect.getmembers(cls,

894

self._is_dbus_thing(thing)))

899

895

900

896

def _get_dbus_property(self, interface_name, property_name):

901

897

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

902

898

property with the specified name and interface.

903

899

"""

904

for cls in self.__class__.__mro__:

905

for name, value in inspect.getmembers(

906

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

900

for cls in self.__class__.__mro__:

901

for name, value in (inspect.getmembers

902

(cls,

903

self._is_dbus_thing("property"))):

907

904

if (value._dbus_name == property_name

908

905

and value._dbus_interface == interface_name):

909

906

return value.__get__(self)

910

907

911

908

# No such property

912

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

913

self.dbus_object_path, interface_name, property_name))

909

raise DBusPropertyNotFound(self.dbus_object_path + ":"

910

+ interface_name + "."

911

+ property_name)

914

912

915

@dbus.service.method(dbus.PROPERTIES_IFACE,

916

in_signature="ss",

913

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

917

914

out_signature="v")

918

915

def Get(self, interface_name, property_name):

919

916

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

938

935

# signatures other than "ay".

939

936

if prop._dbus_signature != "ay":

940

937

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

941

"'ay' signature {!r}"

938

"'ay' signature {0!r}"

942

939

.format(prop._dbus_signature))

943

940

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

944

941

for byte in value))

945

942

prop(value)

946

943

947

@dbus.service.method(dbus.PROPERTIES_IFACE,

948

in_signature="s",

944

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

949

945

out_signature="a{sv}")

950

946

def GetAll(self, interface_name):

951

947

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

966

962

if not hasattr(value, "variant_level"):

967

963

properties[name] = value

968

964

continue

969

properties[name] = type(value)(

970

value, variant_level = value.variant_level + 1)

965

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

966

value.variant_level+1)

971

967

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

972

968

973

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

974

def PropertiesChanged(self, interface_name, changed_properties,

975

invalidated_properties):

976

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

977

standard.

978

"""

979

pass

980

981

969

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

982

970

out_signature="s",

983

971

path_keyword='object_path',

991

979

connection)

992

980

try:

993

981

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

994

995

982

def make_tag(document, name, prop):

996

983

e = document.createElement("property")

997

984

e.setAttribute("name", name)

998

985

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

999

986

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

1000

987

return e

1001

1002

988

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

1003

989

# Add property tags

1004

990

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

1016

1002

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

1017

1003

and prop._dbus_interface

1018

1004

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

1019

annots.update(getattr(

1020

prop, "_dbus_annotations", {}))

1021

for name, value in annots.items():

1005

annots.update(getattr

1006

(prop,

1007

"_dbus_annotations",

1008

{}))

1009

for name, value in annots.iteritems():

1022

1010

ann_tag = document.createElement(

1023

1011

"annotation")

1024

1012

ann_tag.setAttribute("name", name)

1027

1015

# Add interface annotation tags

1028

1016

for annotation, value in dict(

1029

1017

itertools.chain.from_iterable(

1030

annotations().items()

1031

for name, annotations

1032

in self._get_all_dbus_things("interface")

1018

annotations().iteritems()

1019

for name, annotations in

1020

self._get_all_dbus_things("interface")

1033

1021

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

1034

)).items():

1022

)).iteritems():

1035

1023

ann_tag = document.createElement("annotation")

1036

1024

ann_tag.setAttribute("name", annotation)

1037

1025

ann_tag.setAttribute("value", value)

1064

1052

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

1065

1053

if dt is None:

1066

1054

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

1067

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

1055

return dbus.String(dt.isoformat(),

1056

variant_level=variant_level)

1068

1057

1069

1058

1070

1059

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1090

1079

(from DBusObjectWithProperties) and interfaces (from the

1091

1080

dbus_interface_annotations decorator).

1092

1081

"""

1093

1094

1082

def wrapper(cls):

1095

1083

for orig_interface_name, alt_interface_name in (

1096

alt_interface_names.items()):

1084

alt_interface_names.iteritems()):

1097

1085

attr = {}

1098

1086

interface_names = set()

1099

1087

# Go though all attributes of the class

1101

1089

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

1102

1090

# with the wrong interface name

1103

1091

if (not hasattr(attribute, "_dbus_interface")

1104

or not attribute._dbus_interface.startswith(

1105

orig_interface_name)):

1092

or not attribute._dbus_interface

1093

.startswith(orig_interface_name)):

1106

1094

continue

1107

1095

# Create an alternate D-Bus interface name based on

1108

1096

# the current name

1109

alt_interface = attribute._dbus_interface.replace(

1110

orig_interface_name, alt_interface_name)

1097

alt_interface = (attribute._dbus_interface

1098

.replace(orig_interface_name,

1099

alt_interface_name))

1111

1100

interface_names.add(alt_interface)

1112

1101

# Is this a D-Bus signal?

1113

1102

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

1114

if sys.version == 2:

1115

# Extract the original non-method undecorated

1116

# function by black magic

1117

nonmethod_func = (dict(

1103

# Extract the original non-method undecorated

1104

# function by black magic

1105

nonmethod_func = (dict(

1118

1106

zip(attribute.func_code.co_freevars,

1119

attribute.__closure__))

1120

["func"].cell_contents)

1121

else:

1122

nonmethod_func = attribute

1107

attribute.__closure__))["func"]

1108

.cell_contents)

1123

1109

# Create a new, but exactly alike, function

1124

1110

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

1125

1111

# with the alternate D-Bus interface name

1126

if sys.version == 2:

1127

new_function = types.FunctionType(

1128

nonmethod_func.func_code,

1129

nonmethod_func.func_globals,

1130

nonmethod_func.func_name,

1131

nonmethod_func.func_defaults,

1132

nonmethod_func.func_closure)

1133

else:

1134

new_function = types.FunctionType(

1135

nonmethod_func.__code__,

1136

nonmethod_func.__globals__,

1137

nonmethod_func.__name__,

1138

nonmethod_func.__defaults__,

1139

nonmethod_func.__closure__)

1140

new_function = (dbus.service.signal(

1141

alt_interface,

1142

attribute._dbus_signature)(new_function))

1112

new_function = (dbus.service.signal

1113

(alt_interface,

1114

attribute._dbus_signature)

1115

(types.FunctionType(

1116

nonmethod_func.func_code,

1117

nonmethod_func.func_globals,

1118

nonmethod_func.func_name,

1119

nonmethod_func.func_defaults,

1120

nonmethod_func.func_closure)))

1143

1121

# Copy annotations, if any

1144

1122

try:

1145

new_function._dbus_annotations = dict(

1146

attribute._dbus_annotations)

1123

new_function._dbus_annotations = (

1124

dict(attribute._dbus_annotations))

1147

1125

except AttributeError:

1148

1126

pass

1149

1127

# Define a creator of a function to call both the

1154

1132

"""This function is a scope container to pass

1155

1133

func1 and func2 to the "call_both" function

1156

1134

outside of its arguments"""

1157

1158

1135

def call_both(*args, **kwargs):

1159

1136

"""This function will emit two D-Bus

1160

1137

signals by calling func1 and func2"""

1161

1138

func1(*args, **kwargs)

1162

1139

func2(*args, **kwargs)

1163

1164

1140

return call_both

1165

1141

# Create the "call_both" function and add it to

1166

1142

# the class

1171

1147

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

1172

1148

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

1173

1149

# to the class.

1174

attr[attrname] = (

1175

dbus.service.method(

1176

alt_interface,

1177

attribute._dbus_in_signature,

1178

attribute._dbus_out_signature)

1179

(types.FunctionType(attribute.func_code,

1180

attribute.func_globals,

1181

attribute.func_name,

1182

attribute.func_defaults,

1183

attribute.func_closure)))

1150

attr[attrname] = (dbus.service.method

1151

(alt_interface,

1152

attribute._dbus_in_signature,

1153

attribute._dbus_out_signature)

1154

(types.FunctionType

1155

(attribute.func_code,

1156

attribute.func_globals,

1157

attribute.func_name,

1158

attribute.func_defaults,

1159

attribute.func_closure)))

1184

1160

# Copy annotations, if any

1185

1161

try:

1186

attr[attrname]._dbus_annotations = dict(

1187

attribute._dbus_annotations)

1162

attr[attrname]._dbus_annotations = (

1163

dict(attribute._dbus_annotations))

1188

1164

except AttributeError:

1189

1165

pass

1190

1166

# Is this a D-Bus property?

1193

1169

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

1194

1170

# property with the alternate D-Bus interface

1195

1171

# name. Add it to the class.

1196

attr[attrname] = (dbus_service_property(

1197

alt_interface, attribute._dbus_signature,

1198

attribute._dbus_access,

1199

attribute._dbus_get_args_options

1200

["byte_arrays"])

1201

(types.FunctionType(

1202

attribute.func_code,

1203

attribute.func_globals,

1204

attribute.func_name,

1205

attribute.func_defaults,

1206

attribute.func_closure)))

1172

attr[attrname] = (dbus_service_property

1173

(alt_interface,

1174

attribute._dbus_signature,

1175

attribute._dbus_access,

1176

attribute

1177

._dbus_get_args_options

1178

["byte_arrays"])

1179

(types.FunctionType

1180

(attribute.func_code,

1181

attribute.func_globals,

1182

attribute.func_name,

1183

attribute.func_defaults,

1184

attribute.func_closure)))

1207

1185

# Copy annotations, if any

1208

1186

try:

1209

attr[attrname]._dbus_annotations = dict(

1210

attribute._dbus_annotations)

1187

attr[attrname]._dbus_annotations = (

1188

dict(attribute._dbus_annotations))

1211

1189

except AttributeError:

1212

1190

pass

1213

1191

# Is this a D-Bus interface?

1216

1194

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

1217

1195

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

1218

1196

# to the class.

1219

attr[attrname] = (

1220

dbus_interface_annotations(alt_interface)

1221

(types.FunctionType(attribute.func_code,

1222

attribute.func_globals,

1223

attribute.func_name,

1224

attribute.func_defaults,

1225

attribute.func_closure)))

1197

attr[attrname] = (dbus_interface_annotations

1198

(alt_interface)

1199

(types.FunctionType

1200

(attribute.func_code,

1201

attribute.func_globals,

1202

attribute.func_name,

1203

attribute.func_defaults,

1204

attribute.func_closure)))

1226

1205

if deprecate:

1227

1206

# Deprecate all alternate interfaces

1228

iname="_AlternateDBusNames_interface_annotation{}"

1207

iname="_AlternateDBusNames_interface_annotation{0}"

1229

1208

for interface_name in interface_names:

1230

1231

1209

@dbus_interface_annotations(interface_name)

1232

1210

def func(self):

1233

1211

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

1234

"true" }

1212

"true" }

1235

1213

# Find an unused name

1236

1214

for aname in (iname.format(i)

1237

1215

for i in itertools.count()):

1241

1219

if interface_names:

1242

1220

# Replace the class with a new subclass of it with

1243

1221

# methods, signals, etc. as created above.

1244

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

1245

(cls, ), attr)

1222

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

1223

(cls,), attr)

1246

1224

return cls

1247

1248

1225

return wrapper

1249

1226

1250

1227

1251

1228

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

1252

"se.bsnet.fukt.Mandos"})

1229

"se.bsnet.fukt.Mandos"})

1253

1230

class ClientDBus(Client, DBusObjectWithProperties):

1254

1231

"""A Client class using D-Bus

1255

1232

1259

1236

"""

1260

1237

1261

1238

runtime_expansions = (Client.runtime_expansions

1262

+ ("dbus_object_path", ))

1263

1264

_interface = "se.recompile.Mandos.Client"

1239

+ ("dbus_object_path",))

1265

1240

1266

1241

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

1267

1242

1270

1245

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

1271

1246

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

1272

1247

# the D-Bus

1273

client_object_name = str(self.name).translate(

1248

client_object_name = unicode(self.name).translate(

1274

1249

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

1275

1250

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

1276

self.dbus_object_path = dbus.ObjectPath(

1277

"/clients/" + client_object_name)

1251

self.dbus_object_path = (dbus.ObjectPath

1252

("/clients/" + client_object_name))

1278

1253

DBusObjectWithProperties.__init__(self, self.bus,

1279

1254

self.dbus_object_path)

1280

1255

1281

def notifychangeproperty(transform_func, dbus_name,

1282

type_func=lambda x: x,

1283

variant_level=1,

1284

invalidate_only=False,

1285

_interface=_interface):

1256

def notifychangeproperty(transform_func,

1257

dbus_name, type_func=lambda x: x,

1258

variant_level=1):

1286

1259

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

1287

1260

its changes to DBus.

1288

1261

1293

1266

to the D-Bus. Default: no transform

1294

1267

variant_level: D-Bus variant level. Default: 1

1295

1268

"""

1296

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

1297

1269

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

1298

1270

def setter(self, value):

1299

1271

if hasattr(self, "dbus_object_path"):

1300

1272

if (not hasattr(self, attrname) or

1301

1273

type_func(getattr(self, attrname, None))

1302

1274

!= type_func(value)):

1303

if invalidate_only:

1304

self.PropertiesChanged(

1305

_interface, dbus.Dictionary(),

1306

dbus.Array((dbus_name, )))

1307

else:

1308

dbus_value = transform_func(

1309

type_func(value),

1310

variant_level = variant_level)

1311

self.PropertyChanged(dbus.String(dbus_name),

1312

dbus_value)

1313

self.PropertiesChanged(

1314

_interface,

1315

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

1316

dbus_value }),

1317

dbus.Array())

1275

dbus_value = transform_func(type_func(value),

1276

variant_level

1277

=variant_level)

1278

self.PropertyChanged(dbus.String(dbus_name),

1279

dbus_value)

1318

1280

setattr(self, attrname, value)

1319

1281

1320

1282

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

1326

1288

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

1327

1289

last_enabled = notifychangeproperty(datetime_to_dbus,

1328

1290

"LastEnabled")

1329

checker = notifychangeproperty(

1330

dbus.Boolean, "CheckerRunning",

1331

type_func = lambda checker: checker is not None)

1291

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

1292

type_func = lambda checker:

1293

checker is not None)

1332

1294

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1333

1295

"LastCheckedOK")

1334

1296

last_checker_status = notifychangeproperty(dbus.Int16,

1337

1299

datetime_to_dbus, "LastApprovalRequest")

1338

1300

approved_by_default = notifychangeproperty(dbus.Boolean,

1339

1301

"ApprovedByDefault")

1340

approval_delay = notifychangeproperty(

1341

dbus.UInt64, "ApprovalDelay",

1342

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

1302

approval_delay = notifychangeproperty(dbus.UInt64,

1303

"ApprovalDelay",

1304

type_func =

1305

timedelta_to_milliseconds)

1343

1306

approval_duration = notifychangeproperty(

1344

1307

dbus.UInt64, "ApprovalDuration",

1345

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

1308

type_func = timedelta_to_milliseconds)

1346

1309

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

1347

timeout = notifychangeproperty(

1348

dbus.UInt64, "Timeout",

1349

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

1310

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

1311

type_func =

1312

timedelta_to_milliseconds)

1350

1313

extended_timeout = notifychangeproperty(

1351

1314

dbus.UInt64, "ExtendedTimeout",

1352

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

1353

interval = notifychangeproperty(

1354

dbus.UInt64, "Interval",

1355

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

1315

type_func = timedelta_to_milliseconds)

1316

interval = notifychangeproperty(dbus.UInt64,

1317

"Interval",

1318

type_func =

1319

timedelta_to_milliseconds)

1356

1320

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

1357

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

1358

invalidate_only=True)

1359

1321

1360

1322

del notifychangeproperty

1361

1323

1388

1350

*args, **kwargs)

1389

1351

1390

1352

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

1391

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

1353

old_checker = self.checker

1354

if self.checker is not None:

1355

old_checker_pid = self.checker.pid

1356

else:

1357

old_checker_pid = None

1392

1358

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

1393

1359

# Only if new checker process was started

1394

1360

if (self.checker is not None

1403

1369

1404

1370

def approve(self, value=True):

1405

1371

self.approved = value

1406

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

1407

* 1000), self._reset_approved)

1372

gobject.timeout_add(timedelta_to_milliseconds

1373

(self.approval_duration),

1374

self._reset_approved)

1408

1375

self.send_changedstate()

1409

1376

1410

1377

## D-Bus methods, signals & properties

1378

_interface = "se.recompile.Mandos.Client"

1411

1379

1412

1380

## Interfaces

1413

1381

1382

@dbus_interface_annotations(_interface)

1383

def _foo(self):

1384

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

1385

"false"}

1386

1414

1387

## Signals

1415

1388

1416

1389

# CheckerCompleted - signal

1426

1399

pass

1427

1400

1428

1401

# PropertyChanged - signal

1429

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

1430

1402

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

1431

1403

def PropertyChanged(self, property, value):

1432

1404

"D-Bus signal"

1496

1468

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

1497

1469

1498

1470

# ApprovedByDefault - property

1499

@dbus_service_property(_interface,

1500

signature="b",

1471

@dbus_service_property(_interface, signature="b",

1501

1472

access="readwrite")

1502

1473

def ApprovedByDefault_dbus_property(self, value=None):

1503

1474

if value is None: # get

1505

1476

self.approved_by_default = bool(value)

1506

1477

1507

1478

# ApprovalDelay - property

1508

@dbus_service_property(_interface,

1509

signature="t",

1479

@dbus_service_property(_interface, signature="t",

1510

1480

access="readwrite")

1511

1481

def ApprovalDelay_dbus_property(self, value=None):

1512

1482

if value is None: # get

1513

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

1514

* 1000)

1483

return dbus.UInt64(self.approval_delay_milliseconds())

1515

1484

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

1516

1485

1517

1486

# ApprovalDuration - property

1518

@dbus_service_property(_interface,

1519

signature="t",

1487

@dbus_service_property(_interface, signature="t",

1520

1488

access="readwrite")

1521

1489

def ApprovalDuration_dbus_property(self, value=None):

1522

1490

if value is None: # get

1523

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

1524

* 1000)

1491

return dbus.UInt64(timedelta_to_milliseconds(

1492

self.approval_duration))

1525

1493

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

1526

1494

1527

1495

# Name - property

1535

1503

return dbus.String(self.fingerprint)

1536

1504

1537

1505

# Host - property

1538

@dbus_service_property(_interface,

1539

signature="s",

1506

@dbus_service_property(_interface, signature="s",

1540

1507

access="readwrite")

1541

1508

def Host_dbus_property(self, value=None):

1542

1509

if value is None: # get

1543

1510

return dbus.String(self.host)

1544

self.host = str(value)

1511

self.host = unicode(value)

1545

1512

1546

1513

# Created - property

1547

1514

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

1554

1521

return datetime_to_dbus(self.last_enabled)

1555

1522

1556

1523

# Enabled - property

1557

@dbus_service_property(_interface,

1558

signature="b",

1524

@dbus_service_property(_interface, signature="b",

1559

1525

access="readwrite")

1560

1526

def Enabled_dbus_property(self, value=None):

1561

1527

if value is None: # get

1566

1532

self.disable()

1567

1533

1568

1534

# LastCheckedOK - property

1569

@dbus_service_property(_interface,

1570

signature="s",

1535

@dbus_service_property(_interface, signature="s",

1571

1536

access="readwrite")

1572

1537

def LastCheckedOK_dbus_property(self, value=None):

1573

1538

if value is not None:

1576

1541

return datetime_to_dbus(self.last_checked_ok)

1577

1542

1578

1543

# LastCheckerStatus - property

1579

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

1544

@dbus_service_property(_interface, signature="n",

1545

access="read")

1580

1546

def LastCheckerStatus_dbus_property(self):

1581

1547

return dbus.Int16(self.last_checker_status)

1582

1548

1591

1557

return datetime_to_dbus(self.last_approval_request)

1592

1558

1593

1559

# Timeout - property

1594

@dbus_service_property(_interface,

1595

signature="t",

1560

@dbus_service_property(_interface, signature="t",

1596

1561

access="readwrite")

1597

1562

def Timeout_dbus_property(self, value=None):

1598

1563

if value is None: # get

1599

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

1564

return dbus.UInt64(self.timeout_milliseconds())

1600

1565

old_timeout = self.timeout

1601

1566

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

1602

1567

# Reschedule disabling

1611

1576

is None):

1612

1577

return

1613

1578

gobject.source_remove(self.disable_initiator_tag)

1614

self.disable_initiator_tag = gobject.timeout_add(

1615

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

1616

self.disable)

1579

self.disable_initiator_tag = (

1580

gobject.timeout_add(

1581

timedelta_to_milliseconds(self.expires - now),

1582

self.disable))

1617

1583

1618

1584

# ExtendedTimeout - property

1619

@dbus_service_property(_interface,

1620

signature="t",

1585

@dbus_service_property(_interface, signature="t",

1621

1586

access="readwrite")

1622

1587

def ExtendedTimeout_dbus_property(self, value=None):

1623

1588

if value is None: # get

1624

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

1625

* 1000)

1589

return dbus.UInt64(self.extended_timeout_milliseconds())

1626

1590

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

1627

1591

1628

1592

# Interval - property

1629

@dbus_service_property(_interface,

1630

signature="t",

1593

@dbus_service_property(_interface, signature="t",

1631

1594

access="readwrite")

1632

1595

def Interval_dbus_property(self, value=None):

1633

1596

if value is None: # get

1634

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

1597

return dbus.UInt64(self.interval_milliseconds())

1635

1598

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

1636

1599

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

1637

1600

return

1638

1601

if self.enabled:

1639

1602

# Reschedule checker run

1640

1603

gobject.source_remove(self.checker_initiator_tag)

1641

self.checker_initiator_tag = gobject.timeout_add(

1642

value, self.start_checker)

1643

self.start_checker() # Start one now, too

1604

self.checker_initiator_tag = (gobject.timeout_add

1605

(value, self.start_checker))

1606

self.start_checker() # Start one now, too

1644

1607

1645

1608

# Checker - property

1646

@dbus_service_property(_interface,

1647

signature="s",

1609

@dbus_service_property(_interface, signature="s",

1648

1610

access="readwrite")

1649

1611

def Checker_dbus_property(self, value=None):

1650

1612

if value is None: # get

1651

1613

return dbus.String(self.checker_command)

1652

self.checker_command = str(value)

1614

self.checker_command = unicode(value)

1653

1615

1654

1616

# CheckerRunning - property

1655

@dbus_service_property(_interface,

1656

signature="b",

1617

@dbus_service_property(_interface, signature="b",

1657

1618

access="readwrite")

1658

1619

def CheckerRunning_dbus_property(self, value=None):

1659

1620

if value is None: # get

1669

1630

return self.dbus_object_path # is already a dbus.ObjectPath

1670

1631

1671

1632

# Secret = property

1672

@dbus_service_property(_interface,

1673

signature="ay",

1674

access="write",

1675

byte_arrays=True)

1633

@dbus_service_property(_interface, signature="ay",

1634

access="write", byte_arrays=True)

1676

1635

def Secret_dbus_property(self, value):

1677

self.secret = bytes(value)

1636

self.secret = str(value)

1678

1637

1679

1638

del _interface

1680

1639

1684

1643

self._pipe = child_pipe

1685

1644

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

1686

1645

if not self._pipe.recv():

1687

raise KeyError(fpr)

1646

raise KeyError()

1688

1647

1689

1648

def __getattribute__(self, name):

1690

1649

if name == '_pipe':

1694

1653

if data[0] == 'data':

1695

1654

return data[1]

1696

1655

if data[0] == 'function':

1697

1698

1656

def func(*args, **kwargs):

1699

1657

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

1700

1658

return self._pipe.recv()[1]

1701

1702

1659

return func

1703

1660

1704

1661

def __setattr__(self, name, value):

1716

1673

def handle(self):

1717

1674

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

1718

1675

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

1719

str(self.client_address))

1676

unicode(self.client_address))

1720

1677

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

1721

1678

self.server.child_pipe.fileno())

1722

1679

1723

session = gnutls.connection.ClientSession(

1724

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

1680

session = (gnutls.connection

1681

.ClientSession(self.request,

1682

gnutls.connection

1683

.X509Credentials()))

1725

1684

1726

1685

# Note: gnutls.connection.X509Credentials is really a

1727

1686

# generic GnuTLS certificate credentials object so long as

1736

1695

priority = self.server.gnutls_priority

1737

1696

if priority is None:

1738

1697

priority = "NORMAL"

1739

gnutls.library.functions.gnutls_priority_set_direct(

1740

session._c_object, priority, None)

1698

(gnutls.library.functions

1699

.gnutls_priority_set_direct(session._c_object,

1700

priority, None))

1741

1701

1742

1702

# Start communication using the Mandos protocol

1743

1703

# Get protocol number

1763

1723

approval_required = False

1764

1724

try:

1765

1725

try:

1766

fpr = self.fingerprint(

1767

self.peer_certificate(session))

1726

fpr = self.fingerprint(self.peer_certificate

1727

(session))

1768

1728

except (TypeError,

1769

1729

gnutls.errors.GNUTLSError) as error:

1770

1730

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

1785

1745

while True:

1786

1746

if not client.enabled:

1787

1747

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

1788

client.name)

1748

client.name)

1789

1749

if self.server.use_dbus:

1790

1750

# Emit D-Bus signal

1791

1751

client.Rejected("Disabled")

1800

1760

if self.server.use_dbus:

1801

1761

# Emit D-Bus signal

1802

1762

client.NeedApproval(

1803

client.approval_delay.total_seconds()

1804

* 1000, client.approved_by_default)

1763

client.approval_delay_milliseconds(),

1764

client.approved_by_default)

1805

1765

else:

1806

1766

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

1807

1767

client.name)

1813

1773

#wait until timeout or approved

1814

1774

time = datetime.datetime.now()

1815

1775

client.changedstate.acquire()

1816

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

1776

client.changedstate.wait(

1777

float(timedelta_to_milliseconds(delay)

1778

/ 1000))

1817

1779

client.changedstate.release()

1818

1780

time2 = datetime.datetime.now()

1819

1781

if (time2 - time) >= delay:

1838

1800

logger.warning("gnutls send failed",

1839

1801

exc_info=error)

1840

1802

return

1841

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

1842

len(client.secret) - (sent_size

1843

+ sent))

1803

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

1804

sent, len(client.secret)

1805

- (sent_size + sent))

1844

1806

sent_size += sent

1845

1807

1846

1808

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

1863

1825

def peer_certificate(session):

1864

1826

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

1865

1827

# If not an OpenPGP certificate...

1866

if (gnutls.library.functions.gnutls_certificate_type_get(

1867

session._c_object)

1828

if (gnutls.library.functions

1829

.gnutls_certificate_type_get(session._c_object)

1868

1830

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1869

1831

# ...do the normal thing

1870

1832

return session.peer_certificate

1884

1846

def fingerprint(openpgp):

1885

1847

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1886

1848

# New GnuTLS "datum" with the OpenPGP public key

1887

datum = gnutls.library.types.gnutls_datum_t(

1888

ctypes.cast(ctypes.c_char_p(openpgp),

1889

ctypes.POINTER(ctypes.c_ubyte)),

1890

ctypes.c_uint(len(openpgp)))

1849

datum = (gnutls.library.types

1850

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

1851

ctypes.POINTER

1852

(ctypes.c_ubyte)),

1853

ctypes.c_uint(len(openpgp))))

1891

1854

# New empty GnuTLS certificate

1892

1855

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1893

gnutls.library.functions.gnutls_openpgp_crt_init(

1894

ctypes.byref(crt))

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1895

1858

# Import the OpenPGP public key into the certificate

1896

gnutls.library.functions.gnutls_openpgp_crt_import(

1897

crt, ctypes.byref(datum),

1898

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1859

(gnutls.library.functions

1860

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

1861

gnutls.library.constants

1862

.GNUTLS_OPENPGP_FMT_RAW))

1899

1863

# Verify the self signature in the key

1900

1864

crtverify = ctypes.c_uint()

1901

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1902

crt, 0, ctypes.byref(crtverify))

1865

(gnutls.library.functions

1866

.gnutls_openpgp_crt_verify_self(crt, 0,

1867

ctypes.byref(crtverify)))

1903

1868

if crtverify.value != 0:

1904

1869

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1905

raise gnutls.errors.CertificateSecurityError(

1906

"Verify failed")

1870

raise (gnutls.errors.CertificateSecurityError

1871

("Verify failed"))

1907

1872

# New buffer for the fingerprint

1908

1873

buf = ctypes.create_string_buffer(20)

1909

1874

buf_len = ctypes.c_size_t()

1910

1875

# Get the fingerprint from the certificate into the buffer

1911

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1912

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

1876

(gnutls.library.functions

1877

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

1878

ctypes.byref(buf_len)))

1913

1879

# Deinit the certificate

1914

1880

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1915

1881

# Convert the buffer to a Python bytestring

1921

1887

1922

1888

class MultiprocessingMixIn(object):

1923

1889

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

1924

1925

1890

def sub_process_main(self, request, address):

1926

1891

try:

1927

1892

self.finish_request(request, address)

1939

1904

1940

1905

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1941

1906

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

1942

1943

1907

def process_request(self, request, client_address):

1944

1908

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

1945

1909

1966

1930

interface: None or a network interface name (string)

1967

1931

use_ipv6: Boolean; to use IPv6 or not

1968

1932

"""

1969

1970

1933

def __init__(self, server_address, RequestHandlerClass,

1971

interface=None,

1972

use_ipv6=True,

1973

socketfd=None):

1934

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

1974

1935

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

1975

1936

creating a new one with socket.socket().

1976

1937

"""

2017

1978

self.interface)

2018

1979

else:

2019

1980

try:

2020

self.socket.setsockopt(

2021

socket.SOL_SOCKET, SO_BINDTODEVICE,

2022

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

1981

self.socket.setsockopt(socket.SOL_SOCKET,

1982

SO_BINDTODEVICE,

1983

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

2023

1984

except socket.error as error:

2024

1985

if error.errno == errno.EPERM:

2025

1986

logger.error("No permission to bind to"

2043

2004

self.server_address = (any_address,

2044

2005

self.server_address[1])

2045

2006

elif not self.server_address[1]:

2046

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

2007

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

2008

0)

2047

2009

# if self.interface:

2048

2010

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

2049

2011

# 0, # port

2063

2025

2064

2026

Assumes a gobject.MainLoop event loop.

2065

2027

"""

2066

2067

2028

def __init__(self, server_address, RequestHandlerClass,

2068

interface=None,

2069

use_ipv6=True,

2070

clients=None,

2071

gnutls_priority=None,

2072

use_dbus=True,

2073

socketfd=None):

2029

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

2030

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

2074

2031

self.enabled = False

2075

2032

self.clients = clients

2076

2033

if self.clients is None:

2082

2039

interface = interface,

2083

2040

use_ipv6 = use_ipv6,

2084

2041

socketfd = socketfd)

2085

2086

2042

def server_activate(self):

2087

2043

if self.enabled:

2088

2044

return socketserver.TCPServer.server_activate(self)

2092

2048

2093

2049

def add_pipe(self, parent_pipe, proc):

2094

2050

# Call "handle_ipc" for both data and EOF events

2095

gobject.io_add_watch(

2096

parent_pipe.fileno(),

2097

gobject.IO_IN | gobject.IO_HUP,

2098

functools.partial(self.handle_ipc,

2099

parent_pipe = parent_pipe,

2100

proc = proc))

2051

gobject.io_add_watch(parent_pipe.fileno(),

2052

gobject.IO_IN | gobject.IO_HUP,

2053

functools.partial(self.handle_ipc,

2054

parent_pipe =

2055

parent_pipe,

2056

proc = proc))

2101

2057

2102

def handle_ipc(self, source, condition,

2103

parent_pipe=None,

2104

proc = None,

2105

client_object=None):

2058

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

2059

proc = None, client_object=None):

2106

2060

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

2107

2061

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

2108

2062

# Wait for other process to exit

2131

2085

parent_pipe.send(False)

2132

2086

return False

2133

2087

2134

gobject.io_add_watch(

2135

parent_pipe.fileno(),

2136

gobject.IO_IN | gobject.IO_HUP,

2137

functools.partial(self.handle_ipc,

2138

parent_pipe = parent_pipe,

2139

proc = proc,

2140

client_object = client))

2088

gobject.io_add_watch(parent_pipe.fileno(),

2089

gobject.IO_IN | gobject.IO_HUP,

2090

functools.partial(self.handle_ipc,

2091

parent_pipe =

2092

parent_pipe,

2093

proc = proc,

2094

client_object =

2095

client))

2141

2096

parent_pipe.send(True)

2142

2097

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

2143

2098

# same fileno

2149

2104

2150

2105

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

2151

2106

funcname)(*args,

2152

**kwargs)))

2107

**kwargs)))

2153

2108

2154

2109

if command == 'getattr':

2155

2110

attrname = request[1]

2156

2111

if callable(client_object.__getattribute__(attrname)):

2157

parent_pipe.send(('function', ))

2112

parent_pipe.send(('function',))

2158

2113

else:

2159

parent_pipe.send((

2160

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

2114

parent_pipe.send(('data', client_object

2115

.__getattribute__(attrname)))

2161

2116

2162

2117

if command == 'setattr':

2163

2118

attrname = request[1]

2194

2149

# avoid excessive use of external libraries.

2195

2150

2196

2151

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

2197

Token = collections.namedtuple("Token", (

2198

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

2199

# a "group" containing digits

2200

"value", # datetime.timedelta or None

2201

"followers")) # Tokens valid after this token

2152

Token = collections.namedtuple("Token",

2153

("regexp", # To match token; if

2154

# "value" is not None,

2155

# must have a "group"

2156

# containing digits

2157

"value", # datetime.timedelta or

2158

# None

2159

"followers")) # Tokens valid after

2160

# this token

2202

2161

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

2203

2162

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

2204

2163

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

2205

2164

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

2206

2165

datetime.timedelta(seconds=1),

2207

frozenset((token_end, )))

2166

frozenset((token_end,)))

2208

2167

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

2209

2168

datetime.timedelta(minutes=1),

2210

2169

frozenset((token_second, token_end)))

2226

2185

frozenset((token_month, token_end)))

2227

2186

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

2228

2187

datetime.timedelta(weeks=1),

2229

frozenset((token_end, )))

2188

frozenset((token_end,)))

2230

2189

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

2231

2190

frozenset((token_year, token_month,

2232

2191

token_day, token_time,

2233

token_week)))

2192

token_week))),

2234

2193

# Define starting values

2235

2194

value = datetime.timedelta() # Value so far

2236

2195

found_token = None

2237

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

2196

followers = frozenset(token_duration,) # Following valid tokens

2238

2197

s = duration # String left to parse

2239

2198

# Loop until end token is found

2240

2199

while found_token is not token_end:

2257

2216

break

2258

2217

else:

2259

2218

# No currently valid tokens were found

2260

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

2261

.format(duration))

2219

raise ValueError("Invalid RFC 3339 duration")

2262

2220

# End token found

2263

2221

return value

2264

2222

2288

2246

timevalue = datetime.timedelta(0)

2289

2247

for s in interval.split():

2290

2248

try:

2291

suffix = s[-1]

2249

suffix = unicode(s[-1])

2292

2250

value = int(s[:-1])

2293

2251

if suffix == "d":

2294

2252

delta = datetime.timedelta(value)

2301

2259

elif suffix == "w":

2302

2260

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

2303

2261

else:

2304

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

2262

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

2263

.format(suffix))

2305

2264

except IndexError as e:

2306

2265

raise ValueError(*(e.args))

2307

2266

timevalue += delta

2324

2283

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

2325

2284

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

2326

2285

raise OSError(errno.ENODEV,

2327

"{} not a character device"

2286

"{0} not a character device"

2328

2287

.format(os.devnull))

2329

2288

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

2330

2289

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

2340

2299

2341

2300

parser = argparse.ArgumentParser()

2342

2301

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

2343

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

2302

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

2344

2303

help="show version number and exit")

2345

2304

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

2346

2305

help="Bind to interface IF")

2379

2338

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

2380

2339

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

2381

2340

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

2382

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

2383

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

2384

default=None)

2385

2341

2386

2342

options = parser.parse_args()

2387

2343

2396

2352

"port": "",

2397

2353

"debug": "False",

2398

2354

"priority":

2399

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

2400

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

2355

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

2401

2356

"servicename": "Mandos",

2402

2357

"use_dbus": "True",

2403

2358

"use_ipv6": "True",

2406

2361

"socket": "",

2407

2362

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

2408

2363

"foreground": "False",

2409

"zeroconf": "True",

2410

}

2364

}

2411

2365

2412

2366

# Parse config file for server-global settings

2413

2367

server_config = configparser.SafeConfigParser(server_defaults)

2414

2368

del server_defaults

2415

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

2369

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

2370

"mandos.conf"))

2416

2371

# Convert the SafeConfigParser object to a dict

2417

2372

server_settings = server_config.defaults()

2418

2373

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

2436

2391

# Override the settings from the config file with command line

2437

2392

# options, if set.

2438

2393

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

2439

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

2440

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

2441

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

2394

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

2395

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

2396

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

2442

2397

value = getattr(options, option)

2443

2398

if value is not None:

2444

2399

server_settings[option] = value

2445

2400

del options

2446

2401

# Force all strings to be unicode

2447

2402

for option in server_settings.keys():

2448

if isinstance(server_settings[option], bytes):

2449

server_settings[option] = (server_settings[option]

2450

.decode("utf-8"))

2403

if type(server_settings[option]) is str:

2404

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

2451

2405

# Force all boolean options to be boolean

2452

2406

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

2453

"foreground", "zeroconf"):

2407

"foreground"):

2454

2408

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

2455

2409

# Debug implies foreground

2456

2410

if server_settings["debug"]:

2459

2413

2460

2414

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

2461

2415

2462

if (not server_settings["zeroconf"]

2463

and not (server_settings["port"]

2464

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

2465

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

2466

2467

2416

# For convenience

2468

2417

debug = server_settings["debug"]

2469

2418

debuglevel = server_settings["debuglevel"]

2472

2421

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

2473

2422

stored_state_file)

2474

2423

foreground = server_settings["foreground"]

2475

zeroconf = server_settings["zeroconf"]

2476

2424

2477

2425

if debug:

2478

2426

initlogger(debug, logging.DEBUG)

2484

2432

initlogger(debug, level)

2485

2433

2486

2434

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

2487

syslogger.setFormatter(

2488

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

2489

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

2490

server_settings["servicename"])))

2435

syslogger.setFormatter(logging.Formatter

2436

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

2437

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

2438

.format(server_settings

2439

["servicename"])))

2491

2440

2492

2441

# Parse config file with clients

2493

2442

client_config = configparser.SafeConfigParser(Client

2498

2447

global mandos_dbus_service

2499

2448

mandos_dbus_service = None

2500

2449

2501

socketfd = None

2502

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

2503

socketfd = server_settings["socket"]

2504

tcp_server = MandosServer(

2505

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

2506

ClientHandler,

2507

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

2508

use_ipv6=use_ipv6,

2509

gnutls_priority=server_settings["priority"],

2510

use_dbus=use_dbus,

2511

socketfd=socketfd)

2450

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

2451

server_settings["port"]),

2452

ClientHandler,

2453

interface=(server_settings["interface"]

2454

or None),

2455

use_ipv6=use_ipv6,

2456

gnutls_priority=

2457

server_settings["priority"],

2458

use_dbus=use_dbus,

2459

socketfd=(server_settings["socket"]

2460

or None))

2512

2461

if not foreground:

2513

2462

pidfilename = "/run/mandos.pid"

2514

2463

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

2515

2464

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

2516

2465

pidfile = None

2517

2466

try:

2518

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

2467

pidfile = open(pidfilename, "w")

2519

2468

except IOError as e:

2520

2469

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

2521

2470

exc_info=e)

2548

2497

def debug_gnutls(level, string):

2549

2498

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

2550

2499

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2500

(gnutls.library.functions

2501

.gnutls_global_set_log_function(debug_gnutls))

2553

2502

2554

2503

# Redirect stdin so all checkers get /dev/null

2555

2504

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

2575

2524

if use_dbus:

2576

2525

try:

2577

2526

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

2578

bus,

2579

do_not_queue=True)

2580

old_bus_name = dbus.service.BusName(

2581

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

2582

do_not_queue=True)

2583

except dbus.exceptions.DBusException as e:

2527

bus, do_not_queue=True)

2528

old_bus_name = (dbus.service.BusName

2529

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

2530

do_not_queue=True))

2531

except dbus.exceptions.NameExistsException as e:

2584

2532

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

2585

2533

use_dbus = False

2586

2534

server_settings["use_dbus"] = False

2587

2535

tcp_server.use_dbus = False

2588

if zeroconf:

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2590

service = AvahiServiceToSyslog(

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

2595

if server_settings["interface"]:

2596

service.interface = if_nametoindex(

2597

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

2536

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2537

service = AvahiServiceToSyslog(name =

2538

server_settings["servicename"],

2539

servicetype = "_mandos._tcp",

2540

protocol = protocol, bus = bus)

2541

if server_settings["interface"]:

2542

service.interface = (if_nametoindex

2543

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

2598

2544

2599

2545

global multiprocessing_manager

2600

2546

multiprocessing_manager = multiprocessing.Manager()

2619

2565

if server_settings["restore"]:

2620

2566

try:

2621

2567

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

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

2568

clients_data, old_client_settings = (pickle.load

2569

(stored_state))

2624

2570

os.remove(stored_state_path)

2625

2571

except IOError as e:

2626

2572

if e.errno == errno.ENOENT:

2627

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

2628

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

2573

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

2574

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

2629

2575

else:

2630

2576

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

2631

2577

exc_info=e)

2632

2578

raise

2633

2579

except EOFError as e:

2634

2580

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

2635

"EOFError:",

2636

exc_info=e)

2581

"EOFError:", exc_info=e)

2637

2582

2638

2583

with PGPEngine() as pgp:

2639

for client_name, client in clients_data.items():

2584

for client_name, client in clients_data.iteritems():

2640

2585

# Skip removed clients

2641

2586

if client_name not in client_settings:

2642

2587

continue

2651

2596

# For each value in new config, check if it

2652

2597

# differs from the old config value (Except for

2653

2598

# the "secret" attribute)

2654

if (name != "secret"

2655

and (value !=

2656

old_client_settings[client_name][name])):

2599

if (name != "secret" and

2600

value != old_client_settings[client_name]

2601

[name]):

2657

2602

client[name] = value

2658

2603

except KeyError:

2659

2604

pass

2667

2612

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

2668

2613

if not client["last_checked_ok"]:

2669

2614

logger.warning(

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

2615

"disabling client {0} - Client never "

2616

"performed a successful checker"

2617

.format(client_name))

2673

2618

client["enabled"] = False

2674

2619

elif client["last_checker_status"] != 0:

2675

2620

logger.warning(

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

2621

"disabling client {0} - Client "

2622

"last checker failed with error code {1}"

2623

.format(client_name,

2624

client["last_checker_status"]))

2681

2625

client["enabled"] = False

2682

2626

else:

2683

client["expires"] = (

2684

datetime.datetime.utcnow()

2685

+ client["timeout"])

2627

client["expires"] = (datetime.datetime

2628

.utcnow()

2629

+ client["timeout"])

2686

2630

logger.debug("Last checker succeeded,"

2687

" keeping {} enabled".format(

2688

client_name))

2631

" keeping {0} enabled"

2632

.format(client_name))

2689

2633

try:

2690

client["secret"] = pgp.decrypt(

2691

client["encrypted_secret"],

2692

client_settings[client_name]["secret"])

2634

client["secret"] = (

2635

pgp.decrypt(client["encrypted_secret"],

2636

client_settings[client_name]

2637

["secret"]))

2693

2638

except PGPError:

2694

2639

# If decryption fails, we use secret from new settings

2695

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

2696

client_name))

2697

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

2698

["secret"])

2640

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

2641

.format(client_name))

2642

client["secret"] = (

2643

client_settings[client_name]["secret"])

2699

2644

2700

2645

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

2701

2646

for client_name in (set(old_client_settings)

2706

2651

clients_data[client_name] = client_settings[client_name]

2707

2652

2708

2653

# Create all client objects

2709

for client_name, client in clients_data.items():

2654

for client_name, client in clients_data.iteritems():

2710

2655

tcp_server.clients[client_name] = client_class(

2711

name = client_name,

2712

settings = client,

2656

name = client_name, settings = client,

2713

2657

server_settings = server_settings)

2714

2658

2715

2659

if not tcp_server.clients:

2717

2661

2718

2662

if not foreground:

2719

2663

if pidfile is not None:

2720

pid = os.getpid()

2721

2664

try:

2722

2665

with pidfile:

2723

print(pid, file=pidfile)

2666

pid = os.getpid()

2667

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

2724

2668

except IOError:

2725

2669

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

2726

2670

pidfilename, pid)

2731

2675

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

2732

2676

2733

2677

if use_dbus:

2734

2735

@alternate_dbus_interfaces(

2736

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

2678

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

2679

"se.bsnet.fukt.Mandos"})

2737

2680

class MandosDBusService(DBusObjectWithProperties):

2738

2681

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

2739

2740

2682

def __init__(self):

2741

2683

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

2742

2743

2684

_interface = "se.recompile.Mandos"

2744

2685

2745

2686

@dbus_interface_annotations(_interface)

2746

2687

def _foo(self):

2747

return {

2748

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

2749

"false" }

2688

return { "org.freedesktop.DBus.Property"

2689

".EmitsChangedSignal":

2690

"false"}

2750

2691

2751

2692

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

2752

2693

def ClientAdded(self, objpath):

2766

2707

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

2767

2708

def GetAllClients(self):

2768

2709

"D-Bus method"

2769

return dbus.Array(c.dbus_object_path for c in

2710

return dbus.Array(c.dbus_object_path

2711

for c in

2770

2712

tcp_server.clients.itervalues())

2771

2713

2772

2714

@dbus.service.method(_interface,

2774

2716

def GetAllClientsWithProperties(self):

2775

2717

"D-Bus method"

2776

2718

return dbus.Dictionary(

2777

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

2778

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

2719

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

2720

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

2779

2721

signature="oa{sv}")

2780

2722

2781

2723

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

2798

2740

2799

2741

def cleanup():

2800

2742

"Cleanup function; run on exit"

2801

if zeroconf:

2802

service.cleanup()

2743

service.cleanup()

2803

2744

2804

2745

multiprocessing.active_children()

2805

2746

wnull.close()

2819

2760

2820

2761

# A list of attributes that can not be pickled

2821

2762

# + secret.

2822

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

2823

"checker", "server_settings" }

2824

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

2825

.Object):

2763

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

2764

"checker", "server_settings"))

2765

for name, typ in (inspect.getmembers

2766

(dbus.service.Object)):

2826

2767

exclude.add(name)

2827

2768

2828

2769

client_dict["encrypted_secret"] = (client

2835

2776

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

2836

2777

2837

2778

try:

2838

with tempfile.NamedTemporaryFile(

2839

mode='wb',

2840

suffix=".pickle",

2841

prefix='clients-',

2842

dir=os.path.dirname(stored_state_path),

2843

delete=False) as stored_state:

2779

with (tempfile.NamedTemporaryFile

2780

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

2781

dir=os.path.dirname(stored_state_path),

2782

delete=False)) as stored_state:

2844

2783

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

2845

tempname = stored_state.name

2784

tempname=stored_state.name

2846

2785

os.rename(tempname, stored_state_path)

2847

2786

except (IOError, OSError) as e:

2848

2787

if not debug:

2851

2790

except NameError:

2852

2791

pass

2853

2792

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

2854

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

2793

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

2855

2794

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

2856

2795

else:

2857

2796

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

2867

2806

client.disable(quiet=True)

2868

2807

if use_dbus:

2869

2808

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

2809

mandos_dbus_service.ClientRemoved(client

2810

.dbus_object_path,

2811

client.name)

2872

2812

client_settings.clear()

2873

2813

2874

2814

atexit.register(cleanup)

2885

2825

tcp_server.server_activate()

2886

2826

2887

2827

# Find out what port we got

2888

if zeroconf:

2889

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

2828

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

2890

2829

if use_ipv6:

2891

2830

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

2892

2831

" flowinfo %d, scope_id %d",

2898

2837

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

2899

2838

2900

2839

try:

2901

if zeroconf:

2902

# From the Avahi example code

2903

try:

2904

service.activate()

2905

except dbus.exceptions.DBusException as error:

2906

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

2907

cleanup()

2908

sys.exit(1)

2909

# End of Avahi example code

2840

# From the Avahi example code

2841

try:

2842

service.activate()

2843

except dbus.exceptions.DBusException as error:

2844

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

2845

cleanup()

2846

sys.exit(1)

2847

# End of Avahi example code

2910

2848

2911

2849

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

2912

2850

lambda *args, **kwargs:

2927

2865

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

2928

2866

cleanup()

2929

2867

2930

2931

2868

if __name__ == '__main__':

2932

2869

main()