/mandos/trunk : revision 752

1

#!/usr/bin/python

1

#!/usr/bin/python2.7

2

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

3

#

4

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

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

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

18

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

36

37

from future_builtins import *

38

39

import SocketServer as socketserver

39

try:

40

import SocketServer as socketserver

41

except ImportError:

42

import socketserver

40

43

import socket

41

44

import argparse

42

45

import datetime

47

50

import gnutls.library.functions

48

51

import gnutls.library.constants

49

52

import gnutls.library.types

50

import ConfigParser as configparser

53

try:

54

import ConfigParser as configparser

55

except ImportError:

56

import configparser

51

57

import sys

52

58

import re

53

59

import os

62

68

import struct

63

69

import fcntl

64

70

import functools

65

import cPickle as pickle

71

try:

72

import cPickle as pickle

73

except ImportError:

74

import pickle

66

75

import multiprocessing

67

76

import types

68

77

import binascii

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

88

101

except ImportError:

89

102

SO_BINDTODEVICE = None

90

103

91

version = "1.6.0"

104

if sys.version_info.major == 2:

105

str = unicode

106

107

version = "1.6.9"

92

108

stored_state_file = "clients.pickle"

93

109

94

110

logger = logging.getLogger()

95

syslogger = (logging.handlers.SysLogHandler

96

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

97

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

111

syslogger = None

98

112

99

113

try:

100

if_nametoindex = (ctypes.cdll.LoadLibrary

101

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

102

.if_nametoindex)

114

if_nametoindex = ctypes.cdll.LoadLibrary(

115

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

103

116

except (OSError, AttributeError):

117

104

118

def if_nametoindex(interface):

105

119

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

106

120

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

107

121

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

108

122

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

109

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

110

interface))

111

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

112

ifreq[16:20])[0]

123

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

124

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

113

125

return interface_index

114

126

115

127

116

128

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

117

129

"""init logger and add loglevel"""

118

130

131

global syslogger

132

syslogger = (logging.handlers.SysLogHandler(

133

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

134

address = "/dev/log"))

119

135

syslogger.setFormatter(logging.Formatter

120

136

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

121

137

' %(message)s'))

138

154

139

155

class PGPEngine(object):

140

156

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

157

141

158

def __init__(self):

142

159

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

143

160

self.gnupgargs = ['--batch',

172

189

def password_encode(self, password):

173

190

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

174

191

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

175

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

192

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

193

if len(encoded) > 2048:

194

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

195

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

196

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

197

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

198

return encoded

176

199

177

200

def encrypt(self, data, password):

178

201

passphrase = self.password_encode(password)

179

with tempfile.NamedTemporaryFile(dir=self.tempdir

180

) as passfile:

202

with tempfile.NamedTemporaryFile(

203

dir=self.tempdir) as passfile:

181

204

passfile.write(passphrase)

182

205

passfile.flush()

183

206

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

194

217

195

218

def decrypt(self, data, password):

196

219

passphrase = self.password_encode(password)

197

with tempfile.NamedTemporaryFile(dir = self.tempdir

198

) as passfile:

220

with tempfile.NamedTemporaryFile(

221

dir = self.tempdir) as passfile:

199

222

passfile.write(passphrase)

200

223

passfile.flush()

201

224

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

205

228

stdin = subprocess.PIPE,

206

229

stdout = subprocess.PIPE,

207

230

stderr = subprocess.PIPE)

208

decrypted_plaintext, err = proc.communicate(input

209

= data)

231

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

210

232

if proc.returncode != 0:

211

233

raise PGPError(err)

212

234

return decrypted_plaintext

215

237

class AvahiError(Exception):

216

238

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

217

239

self.value = value

218

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

219

def __unicode__(self):

220

return unicode(repr(self.value))

240

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

241

**kwargs)

242

221

243

222

244

class AvahiServiceError(AvahiError):

223

245

pass

224

246

247

225

248

class AvahiGroupError(AvahiError):

226

249

pass

227

250

247

270

bus: dbus.SystemBus()

248

271

"""

249

272

250

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

251

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

252

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

253

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):

254

284

self.interface = interface

255

285

self.name = name

256

286

self.type = servicetype

266

296

self.bus = bus

267

297

self.entry_group_state_changed_match = None

268

298

269

def rename(self):

299

def rename(self, remove=True):

270

300

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

271

301

if self.rename_count >= self.max_renames:

272

302

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

273

303

" after %i retries, exiting.",

274

304

self.rename_count)

275

305

raise AvahiServiceError("Too many renames")

276

self.name = unicode(self.server

277

.GetAlternativeServiceName(self.name))

306

self.name = str(

307

self.server.GetAlternativeServiceName(self.name))

308

self.rename_count += 1

278

309

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

279

310

self.name)

280

self.remove()

311

if remove:

312

self.remove()

281

313

try:

282

314

self.add()

283

315

except dbus.exceptions.DBusException as error:

284

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

285

self.cleanup()

286

os._exit(1)

287

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)

288

324

289

325

def remove(self):

290

326

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

328

364

self.rename()

329

365

elif state == avahi.ENTRY_GROUP_FAILURE:

330

366

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

331

unicode(error))

332

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

333

.format(error))

367

str(error))

368

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

334

369

335

370

def cleanup(self):

336

371

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

346

381

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

347

382

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

348

383

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

349

bad_states = { avahi.SERVER_INVALID:

350

"Zeroconf server invalid",

351

avahi.SERVER_REGISTERING: None,

352

avahi.SERVER_COLLISION:

353

"Zeroconf server name collision",

354

avahi.SERVER_FAILURE:

355

"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

}

356

390

if state in bad_states:

357

391

if bad_states[state] is not None:

358

392

if error is None:

377

411

follow_name_owner_changes=True),

378

412

avahi.DBUS_INTERFACE_SERVER)

379

413

self.server.connect_to_signal("StateChanged",

380

self.server_state_changed)

414

self.server_state_changed)

381

415

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

382

416

383

417

384

418

class AvahiServiceToSyslog(AvahiService):

385

def rename(self):

419

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

386

420

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

387

ret = AvahiService.rename(self)

388

syslogger.setFormatter(logging.Formatter

389

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

390

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

391

.format(self.name)))

421

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

422

syslogger.setFormatter(logging.Formatter(

423

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

424

.format(self.name)))

392

425

return ret

393

426

394

427

395

def timedelta_to_milliseconds(td):

396

"Convert a datetime.timedelta() to milliseconds"

397

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

398

+ (td.seconds * 1000)

399

+ (td.microseconds // 1000))

400

401

402

428

class Client(object):

403

429

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

404

430

448

474

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

449

475

"last_approval_request", "last_checked_ok",

450

476

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

451

client_defaults = { "timeout": "PT5M",

452

"extended_timeout": "PT15M",

453

"interval": "PT2M",

454

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

455

"host": "",

456

"approval_delay": "PT0S",

457

"approval_duration": "PT1S",

458

"approved_by_default": "True",

459

"enabled": "True",

460

}

461

462

def timeout_milliseconds(self):

463

"Return the 'timeout' attribute in milliseconds"

464

return timedelta_to_milliseconds(self.timeout)

465

466

def extended_timeout_milliseconds(self):

467

"Return the 'extended_timeout' attribute in milliseconds"

468

return timedelta_to_milliseconds(self.extended_timeout)

469

470

def interval_milliseconds(self):

471

"Return the 'interval' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.interval)

473

474

def approval_delay_milliseconds(self):

475

return timedelta_to_milliseconds(self.approval_delay)

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

}

476

488

477

489

@staticmethod

478

490

def config_parser(config):

494

506

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

495

507

"enabled")

496

508

509

# Uppercase and remove spaces from fingerprint for later

510

# comparison purposes with return value from the

511

# fingerprint() function

497

512

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

498

513

.replace(" ", ""))

499

514

if "secret" in section:

504

519

"rb") as secfile:

505

520

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

506

521

else:

507

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

522

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

508

523

.format(section))

509

524

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

510

525

client["extended_timeout"] = string_to_delta(

527

542

server_settings = {}

528

543

self.server_settings = server_settings

529

544

# adding all client settings

530

for setting, value in settings.iteritems():

545

for setting, value in settings.items():

531

546

setattr(self, setting, value)

532

547

533

548

if self.enabled:

541

556

self.expires = None

542

557

543

558

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

544

# Uppercase and remove spaces from fingerprint for later

545

# comparison purposes with return value from the fingerprint()

546

# function

547

559

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

548

560

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

549

561

datetime.datetime.utcnow())

556

568

self.current_checker_command = None

557

569

self.approved = None

558

570

self.approvals_pending = 0

559

self.changedstate = (multiprocessing_manager

560

.Condition(multiprocessing_manager

561

.Lock()))

562

self.client_structure = [attr for attr in

563

self.__dict__.iterkeys()

571

self.changedstate = multiprocessing_manager.Condition(

572

multiprocessing_manager.Lock())

573

self.client_structure = [attr

574

for attr in self.__dict__.iterkeys()

564

575

if not attr.startswith("_")]

565

576

self.client_structure.append("client_structure")

566

577

567

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

568

lambda obj:

569

isinstance(obj,

570

property)):

578

for name, t in inspect.getmembers(

579

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

571

580

if not name.startswith("_"):

572

581

self.client_structure.append(name)

573

582

615

624

# and every interval from then on.

616

625

if self.checker_initiator_tag is not None:

617

626

gobject.source_remove(self.checker_initiator_tag)

618

self.checker_initiator_tag = (gobject.timeout_add

619

(self.interval_milliseconds(),

620

self.start_checker))

627

self.checker_initiator_tag = gobject.timeout_add(

628

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

629

self.start_checker)

621

630

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

622

631

if self.disable_initiator_tag is not None:

623

632

gobject.source_remove(self.disable_initiator_tag)

624

self.disable_initiator_tag = (gobject.timeout_add

625

(self.timeout_milliseconds(),

626

self.disable))

633

self.disable_initiator_tag = gobject.timeout_add(

634

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

627

635

# Also start a new checker *right now*.

628

636

self.start_checker()

629

637

638

646

vars(self))

639

647

self.checked_ok()

640

648

else:

641

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

642

vars(self))

649

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

643

650

else:

644

651

self.last_checker_status = -1

645

652

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

659

666

gobject.source_remove(self.disable_initiator_tag)

660

667

self.disable_initiator_tag = None

661

668

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

662

self.disable_initiator_tag = (gobject.timeout_add

663

(timedelta_to_milliseconds

664

(timeout), self.disable))

669

self.disable_initiator_tag = gobject.timeout_add(

670

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

665

671

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

666

672

667

673

def need_approval(self):

684

690

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

685

691

try:

686

692

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

687

except (AttributeError, OSError) as error:

688

if (isinstance(error, OSError)

689

and error.errno != errno.ECHILD):

690

raise error

693

except AttributeError:

694

pass

695

except OSError as error:

696

if error.errno != errno.ECHILD:

697

raise

691

698

else:

692

699

if pid:

693

700

logger.warning("Checker was a zombie")

697

704

# Start a new checker if needed

698

705

if self.checker is None:

699

706

# Escape attributes for the shell

700

escaped_attrs = dict(

701

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

702

for attr in

703

self.runtime_expansions)

707

escaped_attrs = {

708

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

709

for attr in self.runtime_expansions }

704

710

try:

705

711

command = self.checker_command % escaped_attrs

706

712

except TypeError as error:

707

713

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

708

self.checker_command, exc_info=error)

709

return True # Try again later

714

self.checker_command,

715

exc_info=error)

716

return True # Try again later

710

717

self.current_checker_command = command

711

718

try:

712

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

713

command, self.name)

719

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

720

self.name)

714

721

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

715

722

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

716

723

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

725

732

"stderr": wnull })

726

733

self.checker = subprocess.Popen(command,

727

734

close_fds=True,

728

shell=True, cwd="/",

735

shell=True,

736

cwd="/",

729

737

**popen_args)

730

738

except OSError as error:

731

739

logger.error("Failed to start subprocess",

732

740

exc_info=error)

733

741

return True

734

self.checker_callback_tag = (gobject.child_watch_add

735

(self.checker.pid,

736

self.checker_callback,

737

data=command))

742

self.checker_callback_tag = gobject.child_watch_add(

743

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

738

744

# The checker may have completed before the gobject

739

745

# watch was added. Check for this.

740

746

try:

771

777

self.checker = None

772

778

773

779

774

def dbus_service_property(dbus_interface, signature="v",

775

access="readwrite", byte_arrays=False):

780

def dbus_service_property(dbus_interface,

781

signature="v",

782

access="readwrite",

783

byte_arrays=False):

776

784

"""Decorators for marking methods of a DBusObjectWithProperties to

777

785

become properties on the D-Bus.

778

786

787

795

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

788

796

if byte_arrays and signature != "ay":

789

797

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

790

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

798

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

799

791

800

def decorator(func):

792

801

func._dbus_is_property = True

793

802

func._dbus_interface = dbus_interface

798

807

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

799

808

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

800

809

return func

810

801

811

return decorator

802

812

803

813

812

822

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

813

823

"false"}

814

824

"""

825

815

826

def decorator(func):

816

827

func._dbus_is_interface = True

817

828

func._dbus_interface = dbus_interface

818

829

func._dbus_name = dbus_interface

819

830

return func

831

820

832

return decorator

821

833

822

834

824

836

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

825

837

Usage:

826

838

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

827

842

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

828

843

access="r")

829

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

830

"org.freedesktop.DBus.Property."

831

"EmitsChangedSignal": "false"})

832

844

def Property_dbus_property(self):

833

845

return dbus.Boolean(False)

834

846

"""

847

835

848

def decorator(func):

836

849

func._dbus_annotations = annotations

837

850

return func

851

838

852

return decorator

839

853

840

854

841

855

class DBusPropertyException(dbus.exceptions.DBusException):

842

856

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

843

857

"""

844

def __unicode__(self):

845

return unicode(str(self))

858

pass

846

859

847

860

848

861

class DBusPropertyAccessException(DBusPropertyException):

872

885

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

873

886

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

874

887

"""

875

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

888

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

876

889

False)

877

890

878

891

def _get_all_dbus_things(self, thing):

879

892

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

880

893

"""

881

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

882

name),

894

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

883

895

athing.__get__(self))

884

896

for cls in self.__class__.__mro__

885

897

for name, athing in

886

inspect.getmembers(cls,

887

self._is_dbus_thing(thing)))

898

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

888

899

889

900

def _get_dbus_property(self, interface_name, property_name):

890

901

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

891

902

property with the specified name and interface.

892

903

"""

893

for cls in self.__class__.__mro__:

894

for name, value in (inspect.getmembers

895

(cls,

896

self._is_dbus_thing("property"))):

904

for cls in self.__class__.__mro__:

905

for name, value in inspect.getmembers(

906

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

897

907

if (value._dbus_name == property_name

898

908

and value._dbus_interface == interface_name):

899

909

return value.__get__(self)

900

910

901

911

# No such property

902

raise DBusPropertyNotFound(self.dbus_object_path + ":"

903

+ interface_name + "."

904

+ property_name)

912

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

913

self.dbus_object_path, interface_name, property_name))

905

914

906

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

915

@dbus.service.method(dbus.PROPERTIES_IFACE,

916

in_signature="ss",

907

917

out_signature="v")

908

918

def Get(self, interface_name, property_name):

909

919

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

927

937

# The byte_arrays option is not supported yet on

928

938

# signatures other than "ay".

929

939

if prop._dbus_signature != "ay":

930

raise ValueError

940

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

941

"'ay' signature {!r}"

942

.format(prop._dbus_signature))

931

943

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

932

944

for byte in value))

933

945

prop(value)

934

946

935

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

947

@dbus.service.method(dbus.PROPERTIES_IFACE,

948

in_signature="s",

936

949

out_signature="a{sv}")

937

950

def GetAll(self, interface_name):

938

951

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

953

966

if not hasattr(value, "variant_level"):

954

967

properties[name] = value

955

968

continue

956

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

957

value.variant_level+1)

969

properties[name] = type(value)(

970

value, variant_level = value.variant_level + 1)

958

971

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

959

972

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

960

981

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

961

982

out_signature="s",

962

983

path_keyword='object_path',

970

991

connection)

971

992

try:

972

993

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

994

973

995

def make_tag(document, name, prop):

974

996

e = document.createElement("property")

975

997

e.setAttribute("name", name)

976

998

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

977

999

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

978

1000

return e

1001

979

1002

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

980

1003

# Add property tags

981

1004

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

993

1016

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

994

1017

and prop._dbus_interface

995

1018

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

996

annots.update(getattr

997

(prop,

998

"_dbus_annotations",

999

{}))

1000

for name, value in annots.iteritems():

1019

annots.update(getattr(

1020

prop, "_dbus_annotations", {}))

1021

for name, value in annots.items():

1001

1022

ann_tag = document.createElement(

1002

1023

"annotation")

1003

1024

ann_tag.setAttribute("name", name)

1006

1027

# Add interface annotation tags

1007

1028

for annotation, value in dict(

1008

1029

itertools.chain.from_iterable(

1009

annotations().iteritems()

1010

for name, annotations in

1011

self._get_all_dbus_things("interface")

1030

annotations().items()

1031

for name, annotations

1032

in self._get_all_dbus_things("interface")

1012

1033

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

1013

)).iteritems():

1034

)).items():

1014

1035

ann_tag = document.createElement("annotation")

1015

1036

ann_tag.setAttribute("name", annotation)

1016

1037

ann_tag.setAttribute("value", value)

1043

1064

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

1044

1065

if dt is None:

1045

1066

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

1046

return dbus.String(dt.isoformat(),

1047

variant_level=variant_level)

1067

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

1048

1068

1049

1069

1050

1070

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1070

1090

(from DBusObjectWithProperties) and interfaces (from the

1071

1091

dbus_interface_annotations decorator).

1072

1092

"""

1093

1073

1094

def wrapper(cls):

1074

1095

for orig_interface_name, alt_interface_name in (

1075

alt_interface_names.iteritems()):

1096

alt_interface_names.items()):

1076

1097

attr = {}

1077

1098

interface_names = set()

1078

1099

# Go though all attributes of the class

1080

1101

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

1081

1102

# with the wrong interface name

1082

1103

if (not hasattr(attribute, "_dbus_interface")

1083

or not attribute._dbus_interface

1084

.startswith(orig_interface_name)):

1104

or not attribute._dbus_interface.startswith(

1105

orig_interface_name)):

1085

1106

continue

1086

1107

# Create an alternate D-Bus interface name based on

1087

1108

# the current name

1088

alt_interface = (attribute._dbus_interface

1089

.replace(orig_interface_name,

1090

alt_interface_name))

1109

alt_interface = attribute._dbus_interface.replace(

1110

orig_interface_name, alt_interface_name)

1091

1111

interface_names.add(alt_interface)

1092

1112

# Is this a D-Bus signal?

1093

1113

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

1094

1114

# Extract the original non-method undecorated

1095

1115

# function by black magic

1096

1116

nonmethod_func = (dict(

1097

zip(attribute.func_code.co_freevars,

1098

attribute.__closure__))["func"]

1099

.cell_contents)

1117

zip(attribute.func_code.co_freevars,

1118

attribute.__closure__))

1119

["func"].cell_contents)

1100

1120

# Create a new, but exactly alike, function

1101

1121

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

1102

1122

# with the alternate D-Bus interface name

1103

new_function = (dbus.service.signal

1104

(alt_interface,

1105

attribute._dbus_signature)

1123

new_function = (dbus.service.signal(

1124

alt_interface, attribute._dbus_signature)

1106

1125

(types.FunctionType(

1107

nonmethod_func.func_code,

1108

nonmethod_func.func_globals,

1109

nonmethod_func.func_name,

1110

nonmethod_func.func_defaults,

1111

nonmethod_func.func_closure)))

1126

nonmethod_func.func_code,

1127

nonmethod_func.func_globals,

1128

nonmethod_func.func_name,

1129

nonmethod_func.func_defaults,

1130

nonmethod_func.func_closure)))

1112

1131

# Copy annotations, if any

1113

1132

try:

1114

new_function._dbus_annotations = (

1115

dict(attribute._dbus_annotations))

1133

new_function._dbus_annotations = dict(

1134

attribute._dbus_annotations)

1116

1135

except AttributeError:

1117

1136

pass

1118

1137

# Define a creator of a function to call both the

1123

1142

"""This function is a scope container to pass

1124

1143

func1 and func2 to the "call_both" function

1125

1144

outside of its arguments"""

1145

1126

1146

def call_both(*args, **kwargs):

1127

1147

"""This function will emit two D-Bus

1128

1148

signals by calling func1 and func2"""

1129

1149

func1(*args, **kwargs)

1130

1150

func2(*args, **kwargs)

1151

1131

1152

return call_both

1132

1153

# Create the "call_both" function and add it to

1133

1154

# the class

1138

1159

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

1139

1160

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

1140

1161

# to the class.

1141

attr[attrname] = (dbus.service.method

1142

(alt_interface,

1143

attribute._dbus_in_signature,

1144

attribute._dbus_out_signature)

1145

(types.FunctionType

1146

(attribute.func_code,

1147

attribute.func_globals,

1148

attribute.func_name,

1149

attribute.func_defaults,

1150

attribute.func_closure)))

1162

attr[attrname] = (

1163

dbus.service.method(

1164

alt_interface,

1165

attribute._dbus_in_signature,

1166

attribute._dbus_out_signature)

1167

(types.FunctionType(attribute.func_code,

1168

attribute.func_globals,

1169

attribute.func_name,

1170

attribute.func_defaults,

1171

attribute.func_closure)))

1151

1172

# Copy annotations, if any

1152

1173

try:

1153

attr[attrname]._dbus_annotations = (

1154

dict(attribute._dbus_annotations))

1174

attr[attrname]._dbus_annotations = dict(

1175

attribute._dbus_annotations)

1155

1176

except AttributeError:

1156

1177

pass

1157

1178

# Is this a D-Bus property?

1160

1181

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

1161

1182

# property with the alternate D-Bus interface

1162

1183

# name. Add it to the class.

1163

attr[attrname] = (dbus_service_property

1164

(alt_interface,

1165

attribute._dbus_signature,

1166

attribute._dbus_access,

1167

attribute

1168

._dbus_get_args_options

1169

["byte_arrays"])

1170

(types.FunctionType

1171

(attribute.func_code,

1172

attribute.func_globals,

1173

attribute.func_name,

1174

attribute.func_defaults,

1175

attribute.func_closure)))

1184

attr[attrname] = (dbus_service_property(

1185

alt_interface, attribute._dbus_signature,

1186

attribute._dbus_access,

1187

attribute._dbus_get_args_options

1188

["byte_arrays"])

1189

(types.FunctionType(

1190

attribute.func_code,

1191

attribute.func_globals,

1192

attribute.func_name,

1193

attribute.func_defaults,

1194

attribute.func_closure)))

1176

1195

# Copy annotations, if any

1177

1196

try:

1178

attr[attrname]._dbus_annotations = (

1179

dict(attribute._dbus_annotations))

1197

attr[attrname]._dbus_annotations = dict(

1198

attribute._dbus_annotations)

1180

1199

except AttributeError:

1181

1200

pass

1182

1201

# Is this a D-Bus interface?

1185

1204

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

1186

1205

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

1187

1206

# to the class.

1188

attr[attrname] = (dbus_interface_annotations

1189

(alt_interface)

1190

(types.FunctionType

1191

(attribute.func_code,

1192

attribute.func_globals,

1193

attribute.func_name,

1194

attribute.func_defaults,

1195

attribute.func_closure)))

1207

attr[attrname] = (

1208

dbus_interface_annotations(alt_interface)

1209

(types.FunctionType(attribute.func_code,

1210

attribute.func_globals,

1211

attribute.func_name,

1212

attribute.func_defaults,

1213

attribute.func_closure)))

1196

1214

if deprecate:

1197

1215

# Deprecate all alternate interfaces

1198

iname="_AlternateDBusNames_interface_annotation{0}"

1216

iname="_AlternateDBusNames_interface_annotation{}"

1199

1217

for interface_name in interface_names:

1218

1200

1219

@dbus_interface_annotations(interface_name)

1201

1220

def func(self):

1202

1221

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

1203

"true" }

1222

"true" }

1204

1223

# Find an unused name

1205

1224

for aname in (iname.format(i)

1206

1225

for i in itertools.count()):

1210

1229

if interface_names:

1211

1230

# Replace the class with a new subclass of it with

1212

1231

# methods, signals, etc. as created above.

1213

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

1214

(cls,), attr)

1232

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

1233

(cls, ), attr)

1215

1234

return cls

1235

1216

1236

return wrapper

1217

1237

1218

1238

1219

1239

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

1220

"se.bsnet.fukt.Mandos"})

1240

"se.bsnet.fukt.Mandos"})

1221

1241

class ClientDBus(Client, DBusObjectWithProperties):

1222

1242

"""A Client class using D-Bus

1223

1243

1227

1247

"""

1228

1248

1229

1249

runtime_expansions = (Client.runtime_expansions

1230

+ ("dbus_object_path",))

1250

+ ("dbus_object_path", ))

1251

1252

_interface = "se.recompile.Mandos.Client"

1231

1253

1232

1254

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

1233

1255

1236

1258

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

1237

1259

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

1238

1260

# the D-Bus

1239

client_object_name = unicode(self.name).translate(

1261

client_object_name = str(self.name).translate(

1240

1262

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

1241

1263

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

1242

self.dbus_object_path = (dbus.ObjectPath

1243

("/clients/" + client_object_name))

1264

self.dbus_object_path = dbus.ObjectPath(

1265

"/clients/" + client_object_name)

1244

1266

DBusObjectWithProperties.__init__(self, self.bus,

1245

1267

self.dbus_object_path)

1246

1268

1247

def notifychangeproperty(transform_func,

1248

dbus_name, type_func=lambda x: x,

1249

variant_level=1):

1269

def notifychangeproperty(transform_func, dbus_name,

1270

type_func=lambda x: x,

1271

variant_level=1,

1272

invalidate_only=False,

1273

_interface=_interface):

1250

1274

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

1251

1275

its changes to DBus.

1252

1276

1257

1281

to the D-Bus. Default: no transform

1258

1282

variant_level: D-Bus variant level. Default: 1

1259

1283

"""

1260

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

1284

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

1285

1261

1286

def setter(self, value):

1262

1287

if hasattr(self, "dbus_object_path"):

1263

1288

if (not hasattr(self, attrname) or

1264

1289

type_func(getattr(self, attrname, None))

1265

1290

!= type_func(value)):

1266

dbus_value = transform_func(type_func(value),

1267

variant_level

1268

=variant_level)

1269

self.PropertyChanged(dbus.String(dbus_name),

1270

dbus_value)

1291

if invalidate_only:

1292

self.PropertiesChanged(

1293

_interface, dbus.Dictionary(),

1294

dbus.Array((dbus_name, )))

1295

else:

1296

dbus_value = transform_func(

1297

type_func(value),

1298

variant_level = variant_level)

1299

self.PropertyChanged(dbus.String(dbus_name),

1300

dbus_value)

1301

self.PropertiesChanged(

1302

_interface,

1303

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

1304

dbus_value }),

1305

dbus.Array())

1271

1306

setattr(self, attrname, value)

1272

1307

1273

1308

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

1279

1314

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

1280

1315

last_enabled = notifychangeproperty(datetime_to_dbus,

1281

1316

"LastEnabled")

1282

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

1283

type_func = lambda checker:

1284

checker is not None)

1317

checker = notifychangeproperty(

1318

dbus.Boolean, "CheckerRunning",

1319

type_func = lambda checker: checker is not None)

1285

1320

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1286

1321

"LastCheckedOK")

1287

1322

last_checker_status = notifychangeproperty(dbus.Int16,

1290

1325

datetime_to_dbus, "LastApprovalRequest")

1291

1326

approved_by_default = notifychangeproperty(dbus.Boolean,

1292

1327

"ApprovedByDefault")

1293

approval_delay = notifychangeproperty(dbus.UInt64,

1294

"ApprovalDelay",

1295

type_func =

1296

timedelta_to_milliseconds)

1328

approval_delay = notifychangeproperty(

1329

dbus.UInt64, "ApprovalDelay",

1330

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

1297

1331

approval_duration = notifychangeproperty(

1298

1332

dbus.UInt64, "ApprovalDuration",

1299

type_func = timedelta_to_milliseconds)

1333

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

1300

1334

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

1301

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

1302

type_func =

1303

timedelta_to_milliseconds)

1335

timeout = notifychangeproperty(

1336

dbus.UInt64, "Timeout",

1337

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

1304

1338

extended_timeout = notifychangeproperty(

1305

1339

dbus.UInt64, "ExtendedTimeout",

1306

type_func = timedelta_to_milliseconds)

1307

interval = notifychangeproperty(dbus.UInt64,

1308

"Interval",

1309

type_func =

1310

timedelta_to_milliseconds)

1340

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

1341

interval = notifychangeproperty(

1342

dbus.UInt64, "Interval",

1343

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

1311

1344

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

1345

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

1346

invalidate_only=True)

1312

1347

1313

1348

del notifychangeproperty

1314

1349

1341

1376

*args, **kwargs)

1342

1377

1343

1378

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

1344

old_checker = self.checker

1345

if self.checker is not None:

1346

old_checker_pid = self.checker.pid

1347

else:

1348

old_checker_pid = None

1379

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

1349

1380

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

1350

1381

# Only if new checker process was started

1351

1382

if (self.checker is not None

1360

1391

1361

1392

def approve(self, value=True):

1362

1393

self.approved = value

1363

gobject.timeout_add(timedelta_to_milliseconds

1364

(self.approval_duration),

1365

self._reset_approved)

1394

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

1395

* 1000), self._reset_approved)

1366

1396

self.send_changedstate()

1367

1397

1368

1398

## D-Bus methods, signals & properties

1369

_interface = "se.recompile.Mandos.Client"

1370

1399

1371

1400

## Interfaces

1372

1401

1373

@dbus_interface_annotations(_interface)

1374

def _foo(self):

1375

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

1376

"false"}

1377

1378

1402

## Signals

1379

1403

1380

1404

# CheckerCompleted - signal

1390

1414

pass

1391

1415

1392

1416

# PropertyChanged - signal

1417

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

1393

1418

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

1394

1419

def PropertyChanged(self, property, value):

1395

1420

"D-Bus signal"

1459

1484

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

1460

1485

1461

1486

# ApprovedByDefault - property

1462

@dbus_service_property(_interface, signature="b",

1487

@dbus_service_property(_interface,

1488

signature="b",

1463

1489

access="readwrite")

1464

1490

def ApprovedByDefault_dbus_property(self, value=None):

1465

1491

if value is None: # get

1467

1493

self.approved_by_default = bool(value)

1468

1494

1469

1495

# ApprovalDelay - property

1470

@dbus_service_property(_interface, signature="t",

1496

@dbus_service_property(_interface,

1497

signature="t",

1471

1498

access="readwrite")

1472

1499

def ApprovalDelay_dbus_property(self, value=None):

1473

1500

if value is None: # get

1474

return dbus.UInt64(self.approval_delay_milliseconds())

1501

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

1502

* 1000)

1475

1503

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

1476

1504

1477

1505

# ApprovalDuration - property

1478

@dbus_service_property(_interface, signature="t",

1506

@dbus_service_property(_interface,

1507

signature="t",

1479

1508

access="readwrite")

1480

1509

def ApprovalDuration_dbus_property(self, value=None):

1481

1510

if value is None: # get

1482

return dbus.UInt64(timedelta_to_milliseconds(

1483

self.approval_duration))

1511

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

1512

* 1000)

1484

1513

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

1485

1514

1486

1515

# Name - property

1494

1523

return dbus.String(self.fingerprint)

1495

1524

1496

1525

# Host - property

1497

@dbus_service_property(_interface, signature="s",

1526

@dbus_service_property(_interface,

1527

signature="s",

1498

1528

access="readwrite")

1499

1529

def Host_dbus_property(self, value=None):

1500

1530

if value is None: # get

1501

1531

return dbus.String(self.host)

1502

self.host = unicode(value)

1532

self.host = str(value)

1503

1533

1504

1534

# Created - property

1505

1535

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

1512

1542

return datetime_to_dbus(self.last_enabled)

1513

1543

1514

1544

# Enabled - property

1515

@dbus_service_property(_interface, signature="b",

1545

@dbus_service_property(_interface,

1546

signature="b",

1516

1547

access="readwrite")

1517

1548

def Enabled_dbus_property(self, value=None):

1518

1549

if value is None: # get

1523

1554

self.disable()

1524

1555

1525

1556

# LastCheckedOK - property

1526

@dbus_service_property(_interface, signature="s",

1557

@dbus_service_property(_interface,

1558

signature="s",

1527

1559

access="readwrite")

1528

1560

def LastCheckedOK_dbus_property(self, value=None):

1529

1561

if value is not None:

1532

1564

return datetime_to_dbus(self.last_checked_ok)

1533

1565

1534

1566

# LastCheckerStatus - property

1535

@dbus_service_property(_interface, signature="n",

1536

access="read")

1567

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

1537

1568

def LastCheckerStatus_dbus_property(self):

1538

1569

return dbus.Int16(self.last_checker_status)

1539

1570

1548

1579

return datetime_to_dbus(self.last_approval_request)

1549

1580

1550

1581

# Timeout - property

1551

@dbus_service_property(_interface, signature="t",

1582

@dbus_service_property(_interface,

1583

signature="t",

1552

1584

access="readwrite")

1553

1585

def Timeout_dbus_property(self, value=None):

1554

1586

if value is None: # get

1555

return dbus.UInt64(self.timeout_milliseconds())

1587

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

1556

1588

old_timeout = self.timeout

1557

1589

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

1558

1590

# Reschedule disabling

1567

1599

is None):

1568

1600

return

1569

1601

gobject.source_remove(self.disable_initiator_tag)

1570

self.disable_initiator_tag = (

1571

gobject.timeout_add(

1572

timedelta_to_milliseconds(self.expires - now),

1573

self.disable))

1602

self.disable_initiator_tag = gobject.timeout_add(

1603

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

1604

self.disable)

1574

1605

1575

1606

# ExtendedTimeout - property

1576

@dbus_service_property(_interface, signature="t",

1607

@dbus_service_property(_interface,

1608

signature="t",

1577

1609

access="readwrite")

1578

1610

def ExtendedTimeout_dbus_property(self, value=None):

1579

1611

if value is None: # get

1580

return dbus.UInt64(self.extended_timeout_milliseconds())

1612

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

1613

* 1000)

1581

1614

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

1582

1615

1583

1616

# Interval - property

1584

@dbus_service_property(_interface, signature="t",

1617

@dbus_service_property(_interface,

1618

signature="t",

1585

1619

access="readwrite")

1586

1620

def Interval_dbus_property(self, value=None):

1587

1621

if value is None: # get

1588

return dbus.UInt64(self.interval_milliseconds())

1622

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

1589

1623

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

1590

1624

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

1591

1625

return

1592

1626

if self.enabled:

1593

1627

# Reschedule checker run

1594

1628

gobject.source_remove(self.checker_initiator_tag)

1595

self.checker_initiator_tag = (gobject.timeout_add

1596

(value, self.start_checker))

1597

self.start_checker() # Start one now, too

1629

self.checker_initiator_tag = gobject.timeout_add(

1630

value, self.start_checker)

1631

self.start_checker() # Start one now, too

1598

1632

1599

1633

# Checker - property

1600

@dbus_service_property(_interface, signature="s",

1634

@dbus_service_property(_interface,

1635

signature="s",

1601

1636

access="readwrite")

1602

1637

def Checker_dbus_property(self, value=None):

1603

1638

if value is None: # get

1604

1639

return dbus.String(self.checker_command)

1605

self.checker_command = unicode(value)

1640

self.checker_command = str(value)

1606

1641

1607

1642

# CheckerRunning - property

1608

@dbus_service_property(_interface, signature="b",

1643

@dbus_service_property(_interface,

1644

signature="b",

1609

1645

access="readwrite")

1610

1646

def CheckerRunning_dbus_property(self, value=None):

1611

1647

if value is None: # get

1621

1657

return self.dbus_object_path # is already a dbus.ObjectPath

1622

1658

1623

1659

# Secret = property

1624

@dbus_service_property(_interface, signature="ay",

1625

access="write", byte_arrays=True)

1660

@dbus_service_property(_interface,

1661

signature="ay",

1662

access="write",

1663

byte_arrays=True)

1626

1664

def Secret_dbus_property(self, value):

1627

self.secret = str(value)

1665

self.secret = bytes(value)

1628

1666

1629

1667

del _interface

1630

1668

1634

1672

self._pipe = child_pipe

1635

1673

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

1636

1674

if not self._pipe.recv():

1637

raise KeyError()

1675

raise KeyError(fpr)

1638

1676

1639

1677

def __getattribute__(self, name):

1640

1678

if name == '_pipe':

1644

1682

if data[0] == 'data':

1645

1683

return data[1]

1646

1684

if data[0] == 'function':

1685

1647

1686

def func(*args, **kwargs):

1648

1687

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

1649

1688

return self._pipe.recv()[1]

1689

1650

1690

return func

1651

1691

1652

1692

def __setattr__(self, name, value):

1664

1704

def handle(self):

1665

1705

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

1666

1706

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

1667

unicode(self.client_address))

1707

str(self.client_address))

1668

1708

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

1669

1709

self.server.child_pipe.fileno())

1670

1710

1671

session = (gnutls.connection

1672

.ClientSession(self.request,

1673

gnutls.connection

1674

.X509Credentials()))

1711

session = gnutls.connection.ClientSession(

1712

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

1675

1713

1676

1714

# Note: gnutls.connection.X509Credentials is really a

1677

1715

# generic GnuTLS certificate credentials object so long as

1686

1724

priority = self.server.gnutls_priority

1687

1725

if priority is None:

1688

1726

priority = "NORMAL"

1689

(gnutls.library.functions

1690

.gnutls_priority_set_direct(session._c_object,

1691

priority, None))

1727

gnutls.library.functions.gnutls_priority_set_direct(

1728

session._c_object, priority, None)

1692

1729

1693

1730

# Start communication using the Mandos protocol

1694

1731

# Get protocol number

1696

1733

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

1697

1734

try:

1698

1735

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

1699

raise RuntimeError

1736

raise RuntimeError(line)

1700

1737

except (ValueError, IndexError, RuntimeError) as error:

1701

1738

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

1702

1739

return

1714

1751

approval_required = False

1715

1752

try:

1716

1753

try:

1717

fpr = self.fingerprint(self.peer_certificate

1718

(session))

1754

fpr = self.fingerprint(

1755

self.peer_certificate(session))

1719

1756

except (TypeError,

1720

1757

gnutls.errors.GNUTLSError) as error:

1721

1758

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

1736

1773

while True:

1737

1774

if not client.enabled:

1738

1775

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

1739

client.name)

1776

client.name)

1740

1777

if self.server.use_dbus:

1741

1778

# Emit D-Bus signal

1742

1779

client.Rejected("Disabled")

1751

1788

if self.server.use_dbus:

1752

1789

# Emit D-Bus signal

1753

1790

client.NeedApproval(

1754

client.approval_delay_milliseconds(),

1755

client.approved_by_default)

1791

client.approval_delay.total_seconds()

1792

* 1000, client.approved_by_default)

1756

1793

else:

1757

1794

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

1758

1795

client.name)

1764

1801

#wait until timeout or approved

1765

1802

time = datetime.datetime.now()

1766

1803

client.changedstate.acquire()

1767

client.changedstate.wait(

1768

float(timedelta_to_milliseconds(delay)

1769

/ 1000))

1804

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

1770

1805

client.changedstate.release()

1771

1806

time2 = datetime.datetime.now()

1772

1807

if (time2 - time) >= delay:

1791

1826

logger.warning("gnutls send failed",

1792

1827

exc_info=error)

1793

1828

return

1794

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

1795

sent, len(client.secret)

1796

- (sent_size + sent))

1829

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

1830

len(client.secret) - (sent_size

1831

+ sent))

1797

1832

sent_size += sent

1798

1833

1799

1834

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

1816

1851

def peer_certificate(session):

1817

1852

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

1818

1853

# If not an OpenPGP certificate...

1819

if (gnutls.library.functions

1820

.gnutls_certificate_type_get(session._c_object)

1854

if (gnutls.library.functions.gnutls_certificate_type_get(

1855

session._c_object)

1821

1856

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1822

1857

# ...do the normal thing

1823

1858

return session.peer_certificate

1837

1872

def fingerprint(openpgp):

1838

1873

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1839

1874

# New GnuTLS "datum" with the OpenPGP public key

1840

datum = (gnutls.library.types

1841

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

1842

ctypes.POINTER

1843

(ctypes.c_ubyte)),

1844

ctypes.c_uint(len(openpgp))))

1875

datum = gnutls.library.types.gnutls_datum_t(

1876

ctypes.cast(ctypes.c_char_p(openpgp),

1877

ctypes.POINTER(ctypes.c_ubyte)),

1878

ctypes.c_uint(len(openpgp)))

1845

1879

# New empty GnuTLS certificate

1846

1880

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1847

(gnutls.library.functions

1848

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1881

gnutls.library.functions.gnutls_openpgp_crt_init(

1882

ctypes.byref(crt))

1849

1883

# Import the OpenPGP public key into the certificate

1850

(gnutls.library.functions

1851

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

1852

gnutls.library.constants

1853

.GNUTLS_OPENPGP_FMT_RAW))

1884

gnutls.library.functions.gnutls_openpgp_crt_import(

1885

crt, ctypes.byref(datum),

1886

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1854

1887

# Verify the self signature in the key

1855

1888

crtverify = ctypes.c_uint()

1856

(gnutls.library.functions

1857

.gnutls_openpgp_crt_verify_self(crt, 0,

1858

ctypes.byref(crtverify)))

1889

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1890

crt, 0, ctypes.byref(crtverify))

1859

1891

if crtverify.value != 0:

1860

1892

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1861

raise (gnutls.errors.CertificateSecurityError

1862

("Verify failed"))

1893

raise gnutls.errors.CertificateSecurityError(

1894

"Verify failed")

1863

1895

# New buffer for the fingerprint

1864

1896

buf = ctypes.create_string_buffer(20)

1865

1897

buf_len = ctypes.c_size_t()

1866

1898

# Get the fingerprint from the certificate into the buffer

1867

(gnutls.library.functions

1868

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

1869

ctypes.byref(buf_len)))

1899

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1900

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

1870

1901

# Deinit the certificate

1871

1902

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1872

1903

# Convert the buffer to a Python bytestring

1878

1909

1879

1910

class MultiprocessingMixIn(object):

1880

1911

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

1912

1881

1913

def sub_process_main(self, request, address):

1882

1914

try:

1883

1915

self.finish_request(request, address)

1895

1927

1896

1928

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1897

1929

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

1930

1898

1931

def process_request(self, request, client_address):

1899

1932

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

1900

1933

1909

1942

1910

1943

def add_pipe(self, parent_pipe, proc):

1911

1944

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

1912

raise NotImplementedError

1945

raise NotImplementedError()

1913

1946

1914

1947

1915

1948

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1921

1954

interface: None or a network interface name (string)

1922

1955

use_ipv6: Boolean; to use IPv6 or not

1923

1956

"""

1957

1924

1958

def __init__(self, server_address, RequestHandlerClass,

1925

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

1959

interface=None,

1960

use_ipv6=True,

1961

socketfd=None):

1926

1962

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

1927

1963

creating a new one with socket.socket().

1928

1964

"""

1969

2005

self.interface)

1970

2006

else:

1971

2007

try:

1972

self.socket.setsockopt(socket.SOL_SOCKET,

1973

SO_BINDTODEVICE,

1974

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

2008

self.socket.setsockopt(

2009

socket.SOL_SOCKET, SO_BINDTODEVICE,

2010

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

1975

2011

except socket.error as error:

1976

2012

if error.errno == errno.EPERM:

1977

2013

logger.error("No permission to bind to"

1995

2031

self.server_address = (any_address,

1996

2032

self.server_address[1])

1997

2033

elif not self.server_address[1]:

1998

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

1999

0)

2034

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

2000

2035

# if self.interface:

2001

2036

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

2002

2037

# 0, # port

2016

2051

2017

2052

Assumes a gobject.MainLoop event loop.

2018

2053

"""

2054

2019

2055

def __init__(self, server_address, RequestHandlerClass,

2020

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

2021

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

2056

interface=None,

2057

use_ipv6=True,

2058

clients=None,

2059

gnutls_priority=None,

2060

use_dbus=True,

2061

socketfd=None):

2022

2062

self.enabled = False

2023

2063

self.clients = clients

2024

2064

if self.clients is None:

2030

2070

interface = interface,

2031

2071

use_ipv6 = use_ipv6,

2032

2072

socketfd = socketfd)

2073

2033

2074

def server_activate(self):

2034

2075

if self.enabled:

2035

2076

return socketserver.TCPServer.server_activate(self)

2039

2080

2040

2081

def add_pipe(self, parent_pipe, proc):

2041

2082

# Call "handle_ipc" for both data and EOF events

2042

gobject.io_add_watch(parent_pipe.fileno(),

2043

gobject.IO_IN | gobject.IO_HUP,

2044

functools.partial(self.handle_ipc,

2045

parent_pipe =

2046

parent_pipe,

2047

proc = proc))

2083

gobject.io_add_watch(

2084

parent_pipe.fileno(),

2085

gobject.IO_IN | gobject.IO_HUP,

2086

functools.partial(self.handle_ipc,

2087

parent_pipe = parent_pipe,

2088

proc = proc))

2048

2089

2049

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

2050

proc = None, client_object=None):

2090

def handle_ipc(self, source, condition,

2091

parent_pipe=None,

2092

proc = None,

2093

client_object=None):

2051

2094

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

2052

2095

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

2053

2096

# Wait for other process to exit

2076

2119

parent_pipe.send(False)

2077

2120

return False

2078

2121

2079

gobject.io_add_watch(parent_pipe.fileno(),

2080

gobject.IO_IN | gobject.IO_HUP,

2081

functools.partial(self.handle_ipc,

2082

parent_pipe =

2083

parent_pipe,

2084

proc = proc,

2085

client_object =

2086

client))

2122

gobject.io_add_watch(

2123

parent_pipe.fileno(),

2124

gobject.IO_IN | gobject.IO_HUP,

2125

functools.partial(self.handle_ipc,

2126

parent_pipe = parent_pipe,

2127

proc = proc,

2128

client_object = client))

2087

2129

parent_pipe.send(True)

2088

2130

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

2089

2131

# same fileno

2095

2137

2096

2138

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

2097

2139

funcname)(*args,

2098

**kwargs)))

2140

**kwargs)))

2099

2141

2100

2142

if command == 'getattr':

2101

2143

attrname = request[1]

2102

2144

if callable(client_object.__getattribute__(attrname)):

2103

parent_pipe.send(('function',))

2145

parent_pipe.send(('function', ))

2104

2146

else:

2105

parent_pipe.send(('data', client_object

2106

.__getattribute__(attrname)))

2147

parent_pipe.send((

2148

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

2107

2149

2108

2150

if command == 'setattr':

2109

2151

attrname = request[1]

2149

2191

# None

2150

2192

"followers")) # Tokens valid after

2151

2193

# this token

2194

Token = collections.namedtuple("Token", (

2195

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

2196

# a "group" containing digits

2197

"value", # datetime.timedelta or None

2198

"followers")) # Tokens valid after this token

2152

2199

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

2153

2200

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

2154

2201

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

2155

2202

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

2156

2203

datetime.timedelta(seconds=1),

2157

frozenset((token_end,)))

2204

frozenset((token_end, )))

2158

2205

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

2159

2206

datetime.timedelta(minutes=1),

2160

2207

frozenset((token_second, token_end)))

2176

2223

frozenset((token_month, token_end)))

2177

2224

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

2178

2225

datetime.timedelta(weeks=1),

2179

frozenset((token_end,)))

2226

frozenset((token_end, )))

2180

2227

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

2181

2228

frozenset((token_year, token_month,

2182

2229

token_day, token_time,

2183

token_week))),

2230

token_week)))

2184

2231

# Define starting values

2185

2232

value = datetime.timedelta() # Value so far

2186

2233

found_token = None

2187

followers = frozenset(token_duration,) # Following valid tokens

2234

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

2188

2235

s = duration # String left to parse

2189

2236

# Loop until end token is found

2190

2237

while found_token is not token_end:

2207

2254

break

2208

2255

else:

2209

2256

# No currently valid tokens were found

2210

raise ValueError("Invalid RFC 3339 duration")

2257

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

2258

.format(duration))

2211

2259

# End token found

2212

2260

return value

2213

2261

2237

2285

timevalue = datetime.timedelta(0)

2238

2286

for s in interval.split():

2239

2287

try:

2240

suffix = unicode(s[-1])

2288

suffix = s[-1]

2241

2289

value = int(s[:-1])

2242

2290

if suffix == "d":

2243

2291

delta = datetime.timedelta(value)

2250

2298

elif suffix == "w":

2251

2299

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

2252

2300

else:

2253

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

2254

.format(suffix))

2255

except (ValueError, IndexError) as e:

2301

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

2302

except IndexError as e:

2256

2303

raise ValueError(*(e.args))

2257

2304

timevalue += delta

2258

2305

return timevalue

2274

2321

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

2275

2322

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

2276

2323

raise OSError(errno.ENODEV,

2277

"{0} not a character device"

2324

"{} not a character device"

2278

2325

.format(os.devnull))

2279

2326

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

2280

2327

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

2290

2337

2291

2338

parser = argparse.ArgumentParser()

2292

2339

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

2293

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

2340

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

2294

2341

help="show version number and exit")

2295

2342

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

2296

2343

help="Bind to interface IF")

2329

2376

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

2330

2377

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

2331

2378

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

2379

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

2380

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

2381

default=None)

2332

2382

2333

2383

options = parser.parse_args()

2334

2384

2335

2385

if options.check:

2336

2386

import doctest

2337

doctest.testmod()

2338

sys.exit()

2387

fail_count, test_count = doctest.testmod()

2388

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

2339

2389

2340

2390

# Default values for config file for server-global settings

2341

2391

server_defaults = { "interface": "",

2343

2393

"port": "",

2344

2394

"debug": "False",

2345

2395

"priority":

2346

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

2396

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

2397

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

2347

2398

"servicename": "Mandos",

2348

2399

"use_dbus": "True",

2349

2400

"use_ipv6": "True",

2352

2403

"socket": "",

2353

2404

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

2354

2405

"foreground": "False",

2355

}

2406

"zeroconf": "True",

2407

}

2356

2408

2357

2409

# Parse config file for server-global settings

2358

2410

server_config = configparser.SafeConfigParser(server_defaults)

2359

2411

del server_defaults

2360

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

2361

"mandos.conf"))

2412

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

2362

2413

# Convert the SafeConfigParser object to a dict

2363

2414

server_settings = server_config.defaults()

2364

2415

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

2382

2433

# Override the settings from the config file with command line

2383

2434

# options, if set.

2384

2435

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

2385

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

2386

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

2387

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

2436

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

2437

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

2438

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

2388

2439

value = getattr(options, option)

2389

2440

if value is not None:

2390

2441

server_settings[option] = value

2391

2442

del options

2392

2443

# Force all strings to be unicode

2393

2444

for option in server_settings.keys():

2394

if type(server_settings[option]) is str:

2395

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

2445

if isinstance(server_settings[option], bytes):

2446

server_settings[option] = (server_settings[option]

2447

.decode("utf-8"))

2396

2448

# Force all boolean options to be boolean

2397

2449

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

2398

"foreground"):

2450

"foreground", "zeroconf"):

2399

2451

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

2400

2452

# Debug implies foreground

2401

2453

if server_settings["debug"]:

2404

2456

2405

2457

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

2406

2458

2459

if (not server_settings["zeroconf"]

2460

and not (server_settings["port"]

2461

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

2462

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

2463

2407

2464

# For convenience

2408

2465

debug = server_settings["debug"]

2409

2466

debuglevel = server_settings["debuglevel"]

2412

2469

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

2413

2470

stored_state_file)

2414

2471

foreground = server_settings["foreground"]

2472

zeroconf = server_settings["zeroconf"]

2415

2473

2416

2474

if debug:

2417

2475

initlogger(debug, logging.DEBUG)

2423

2481

initlogger(debug, level)

2424

2482

2425

2483

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

2426

syslogger.setFormatter(logging.Formatter

2427

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

2428

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

2429

.format(server_settings

2430

["servicename"])))

2484

syslogger.setFormatter(

2485

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

2486

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

2487

server_settings["servicename"])))

2431

2488

2432

2489

# Parse config file with clients

2433

2490

client_config = configparser.SafeConfigParser(Client

2438

2495

global mandos_dbus_service

2439

2496

mandos_dbus_service = None

2440

2497

2441

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

2442

server_settings["port"]),

2443

ClientHandler,

2444

interface=(server_settings["interface"]

2445

or None),

2446

use_ipv6=use_ipv6,

2447

gnutls_priority=

2448

server_settings["priority"],

2449

use_dbus=use_dbus,

2450

socketfd=(server_settings["socket"]

2451

or None))

2498

socketfd = None

2499

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

2500

socketfd = server_settings["socket"]

2501

tcp_server = MandosServer(

2502

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

2503

ClientHandler,

2504

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

2505

use_ipv6=use_ipv6,

2506

gnutls_priority=server_settings["priority"],

2507

use_dbus=use_dbus,

2508

socketfd=socketfd)

2452

2509

if not foreground:

2453

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

2510

pidfilename = "/run/mandos.pid"

2511

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

2512

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

2454

2513

pidfile = None

2455

2514

try:

2456

pidfile = open(pidfilename, "w")

2515

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

2457

2516

except IOError as e:

2458

2517

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

2459

2518

exc_info=e)

2473

2532

os.setuid(uid)

2474

2533

except OSError as error:

2475

2534

if error.errno != errno.EPERM:

2476

raise error

2535

raise

2477

2536

2478

2537

if debug:

2479

2538

# Enable all possible GnuTLS debugging

2486

2545

def debug_gnutls(level, string):

2487

2546

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

2488

2547

2489

(gnutls.library.functions

2490

.gnutls_global_set_log_function(debug_gnutls))

2548

gnutls.library.functions.gnutls_global_set_log_function(

2549

debug_gnutls)

2491

2550

2492

2551

# Redirect stdin so all checkers get /dev/null

2493

2552

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

2513

2572

if use_dbus:

2514

2573

try:

2515

2574

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

2516

bus, do_not_queue=True)

2517

old_bus_name = (dbus.service.BusName

2518

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

2519

do_not_queue=True))

2520

except dbus.exceptions.NameExistsException as e:

2575

bus,

2576

do_not_queue=True)

2577

old_bus_name = dbus.service.BusName(

2578

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

2579

do_not_queue=True)

2580

except dbus.exceptions.DBusException as e:

2521

2581

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

2522

2582

use_dbus = False

2523

2583

server_settings["use_dbus"] = False

2524

2584

tcp_server.use_dbus = False

2525

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2526

service = AvahiServiceToSyslog(name =

2527

server_settings["servicename"],

2528

servicetype = "_mandos._tcp",

2529

protocol = protocol, bus = bus)

2530

if server_settings["interface"]:

2531

service.interface = (if_nametoindex

2532

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

2585

if zeroconf:

2586

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2587

service = AvahiServiceToSyslog(

2588

name = server_settings["servicename"],

2589

servicetype = "_mandos._tcp",

2590

protocol = protocol,

2591

bus = bus)

2592

if server_settings["interface"]:

2593

service.interface = if_nametoindex(

2594

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

2533

2595

2534

2596

global multiprocessing_manager

2535

2597

multiprocessing_manager = multiprocessing.Manager()

2554

2616

if server_settings["restore"]:

2555

2617

try:

2556

2618

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

2557

clients_data, old_client_settings = (pickle.load

2558

(stored_state))

2619

clients_data, old_client_settings = pickle.load(

2620

stored_state)

2559

2621

os.remove(stored_state_path)

2560

2622

except IOError as e:

2561

2623

if e.errno == errno.ENOENT:

2562

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

2563

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

2624

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

2625

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

2564

2626

else:

2565

2627

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

2566

2628

exc_info=e)

2567

2629

raise

2568

2630

except EOFError as e:

2569

2631

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

2570

"EOFError:", exc_info=e)

2632

"EOFError:",

2633

exc_info=e)

2571

2634

2572

2635

with PGPEngine() as pgp:

2573

for client_name, client in clients_data.iteritems():

2636

for client_name, client in clients_data.items():

2574

2637

# Skip removed clients

2575

2638

if client_name not in client_settings:

2576

2639

continue

2585

2648

# For each value in new config, check if it

2586

2649

# differs from the old config value (Except for

2587

2650

# the "secret" attribute)

2588

if (name != "secret" and

2589

value != old_client_settings[client_name]

2590

[name]):

2651

if (name != "secret"

2652

and (value !=

2653

old_client_settings[client_name][name])):

2591

2654

client[name] = value

2592

2655

except KeyError:

2593

2656

pass

2601

2664

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

2602

2665

if not client["last_checked_ok"]:

2603

2666

logger.warning(

2604

"disabling client {0} - Client never "

2605

"performed a successful checker"

2606

.format(client_name))

2667

"disabling client {} - Client never "

2668

"performed a successful checker".format(

2669

client_name))

2607

2670

client["enabled"] = False

2608

2671

elif client["last_checker_status"] != 0:

2609

2672

logger.warning(

2610

"disabling client {0} - Client "

2611

"last checker failed with error code {1}"

2612

.format(client_name,

2613

client["last_checker_status"]))

2673

"disabling client {} - Client last"

2674

" checker failed with error code"

2675

" {}".format(

2676

client_name,

2677

client["last_checker_status"]))

2614

2678

client["enabled"] = False

2615

2679

else:

2616

client["expires"] = (datetime.datetime

2617

.utcnow()

2618

+ client["timeout"])

2680

client["expires"] = (

2681

datetime.datetime.utcnow()

2682

+ client["timeout"])

2619

2683

logger.debug("Last checker succeeded,"

2620

" keeping {0} enabled"

2621

.format(client_name))

2684

" keeping {} enabled".format(

2685

client_name))

2622

2686

try:

2623

client["secret"] = (

2624

pgp.decrypt(client["encrypted_secret"],

2625

client_settings[client_name]

2626

["secret"]))

2687

client["secret"] = pgp.decrypt(

2688

client["encrypted_secret"],

2689

client_settings[client_name]["secret"])

2627

2690

except PGPError:

2628

2691

# If decryption fails, we use secret from new settings

2629

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

2630

.format(client_name))

2631

client["secret"] = (

2632

client_settings[client_name]["secret"])

2692

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

2693

client_name))

2694

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

2695

["secret"])

2633

2696

2634

2697

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

2635

2698

for client_name in (set(old_client_settings)

2640

2703

clients_data[client_name] = client_settings[client_name]

2641

2704

2642

2705

# Create all client objects

2643

for client_name, client in clients_data.iteritems():

2706

for client_name, client in clients_data.items():

2644

2707

tcp_server.clients[client_name] = client_class(

2645

name = client_name, settings = client,

2708

name = client_name,

2709

settings = client,

2646

2710

server_settings = server_settings)

2647

2711

2648

2712

if not tcp_server.clients:

2650

2714

2651

2715

if not foreground:

2652

2716

if pidfile is not None:

2717

pid = os.getpid()

2653

2718

try:

2654

2719

with pidfile:

2655

pid = os.getpid()

2656

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

2720

print(pid, file=pidfile)

2657

2721

except IOError:

2658

2722

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

2659

2723

pidfilename, pid)

2664

2728

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

2665

2729

2666

2730

if use_dbus:

2667

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

2668

"se.bsnet.fukt.Mandos"})

2731

2732

@alternate_dbus_interfaces(

2733

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

2669

2734

class MandosDBusService(DBusObjectWithProperties):

2670

2735

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

2736

2671

2737

def __init__(self):

2672

2738

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

2739

2673

2740

_interface = "se.recompile.Mandos"

2674

2741

2675

2742

@dbus_interface_annotations(_interface)

2676

2743

def _foo(self):

2677

return { "org.freedesktop.DBus.Property"

2678

".EmitsChangedSignal":

2679

"false"}

2744

return {

2745

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

2746

"false" }

2680

2747

2681

2748

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

2682

2749

def ClientAdded(self, objpath):

2696

2763

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

2697

2764

def GetAllClients(self):

2698

2765

"D-Bus method"

2699

return dbus.Array(c.dbus_object_path

2700

for c in

2766

return dbus.Array(c.dbus_object_path for c in

2701

2767

tcp_server.clients.itervalues())

2702

2768

2703

2769

@dbus.service.method(_interface,

2705

2771

def GetAllClientsWithProperties(self):

2706

2772

"D-Bus method"

2707

2773

return dbus.Dictionary(

2708

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

2709

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

2774

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

2775

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

2710

2776

signature="oa{sv}")

2711

2777

2712

2778

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

2729

2795

2730

2796

def cleanup():

2731

2797

"Cleanup function; run on exit"

2732

service.cleanup()

2798

if zeroconf:

2799

service.cleanup()

2733

2800

2734

2801

multiprocessing.active_children()

2735

2802

wnull.close()

2749

2816

2750

2817

# A list of attributes that can not be pickled

2751

2818

# + secret.

2752

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

2753

"checker", "server_settings"))

2754

for name, typ in (inspect.getmembers

2755

(dbus.service.Object)):

2819

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

2820

"checker", "server_settings" }

2821

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

2822

.Object):

2756

2823

exclude.add(name)

2757

2824

2758

2825

client_dict["encrypted_secret"] = (client

2765

2832

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

2766

2833

2767

2834

try:

2768

with (tempfile.NamedTemporaryFile

2769

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

2770

dir=os.path.dirname(stored_state_path),

2771

delete=False)) as stored_state:

2835

with tempfile.NamedTemporaryFile(

2836

mode='wb',

2837

suffix=".pickle",

2838

prefix='clients-',

2839

dir=os.path.dirname(stored_state_path),

2840

delete=False) as stored_state:

2772

2841

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

2773

tempname=stored_state.name

2842

tempname = stored_state.name

2774

2843

os.rename(tempname, stored_state_path)

2775

2844

except (IOError, OSError) as e:

2776

2845

if not debug:

2779

2848

except NameError:

2780

2849

pass

2781

2850

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

2782

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

2851

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

2783

2852

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

2784

2853

else:

2785

2854

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

2786

2855

exc_info=e)

2787

raise e

2856

raise

2788

2857

2789

2858

# Delete all clients, and settings from config

2790

2859

while tcp_server.clients:

2795

2864

client.disable(quiet=True)

2796

2865

if use_dbus:

2797

2866

# Emit D-Bus signal

2798

mandos_dbus_service.ClientRemoved(client

2799

.dbus_object_path,

2800

client.name)

2867

mandos_dbus_service.ClientRemoved(

2868

client.dbus_object_path, client.name)

2801

2869

client_settings.clear()

2802

2870

2803

2871

atexit.register(cleanup)

2814

2882

tcp_server.server_activate()

2815

2883

2816

2884

# Find out what port we got

2817

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

2885

if zeroconf:

2886

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

2818

2887

if use_ipv6:

2819

2888

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

2820

2889

" flowinfo %d, scope_id %d",

2826

2895

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

2827

2896

2828

2897

try:

2829

# From the Avahi example code

2830

try:

2831

service.activate()

2832

except dbus.exceptions.DBusException as error:

2833

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

2834

cleanup()

2835

sys.exit(1)

2836

# End of Avahi example code

2898

if zeroconf:

2899

# From the Avahi example code

2900

try:

2901

service.activate()

2902

except dbus.exceptions.DBusException as error:

2903

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

2904

cleanup()

2905

sys.exit(1)

2906

# End of Avahi example code

2837

2907

2838

2908

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

2839

2909

lambda *args, **kwargs:

2854

2924

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

2855

2925

cleanup()

2856

2926

2927

2857

2928

if __name__ == '__main__':

2858

2929

main()