/mandos/trunk : revision 775

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 = "1.6.6"

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

111

syslogger = None

96

112

97

113

try:

98

if_nametoindex = (ctypes.cdll.LoadLibrary

99

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

100

.if_nametoindex)

114

if_nametoindex = ctypes.cdll.LoadLibrary(

115

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

101

116

except (OSError, AttributeError):

117

102

118

def if_nametoindex(interface):

103

119

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

104

120

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

105

121

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

106

122

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

123

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

124

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

111

125

return interface_index

112

126

113

127

115

129

"""init logger and add loglevel"""

116

130

117

131

global syslogger

118

syslogger = (logging.handlers.SysLogHandler

119

(facility =

120

logging.handlers.SysLogHandler.LOG_DAEMON,

121

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

132

syslogger = (logging.handlers.SysLogHandler(

133

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

134

address = "/dev/log"))

122

135

syslogger.setFormatter(logging.Formatter

123

136

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

124

137

' %(message)s'))

141

154

142

155

class PGPEngine(object):

143

156

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

157

144

158

def __init__(self):

145

159

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

146

160

self.gnupgargs = ['--batch',

185

199

186

200

def encrypt(self, data, password):

187

201

passphrase = self.password_encode(password)

188

with tempfile.NamedTemporaryFile(dir=self.tempdir

189

) as passfile:

202

with tempfile.NamedTemporaryFile(

203

dir=self.tempdir) as passfile:

190

204

passfile.write(passphrase)

191

205

passfile.flush()

192

206

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

203

217

204

218

def decrypt(self, data, password):

205

219

passphrase = self.password_encode(password)

206

with tempfile.NamedTemporaryFile(dir = self.tempdir

207

) as passfile:

220

with tempfile.NamedTemporaryFile(

221

dir = self.tempdir) as passfile:

208

222

passfile.write(passphrase)

209

223

passfile.flush()

210

224

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

214

228

stdin = subprocess.PIPE,

215

229

stdout = subprocess.PIPE,

216

230

stderr = subprocess.PIPE)

217

decrypted_plaintext, err = proc.communicate(input

218

= data)

231

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

219

232

if proc.returncode != 0:

220

233

raise PGPError(err)

221

234

return decrypted_plaintext

224

237

class AvahiError(Exception):

225

238

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

226

239

self.value = value

227

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

228

def __unicode__(self):

229

return unicode(repr(self.value))

240

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

241

**kwargs)

242

230

243

231

244

class AvahiServiceError(AvahiError):

232

245

pass

233

246

247

234

248

class AvahiGroupError(AvahiError):

235

249

pass

236

250

256

270

bus: dbus.SystemBus()

257

271

"""

258

272

259

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

260

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

261

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

262

protocol = avahi.PROTO_UNSPEC, bus = None):

273

def __init__(self,

274

interface = avahi.IF_UNSPEC,

275

name = None,

276

servicetype = None,

277

port = None,

278

TXT = None,

279

domain = "",

280

host = "",

281

max_renames = 32768,

282

protocol = avahi.PROTO_UNSPEC,

283

bus = None):

263

284

self.interface = interface

264

285

self.name = name

265

286

self.type = servicetype

275

296

self.bus = bus

276

297

self.entry_group_state_changed_match = None

277

298

278

def rename(self):

299

def rename(self, remove=True):

279

300

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

280

301

if self.rename_count >= self.max_renames:

281

302

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

282

303

" after %i retries, exiting.",

283

304

self.rename_count)

284

305

raise AvahiServiceError("Too many renames")

285

self.name = unicode(self.server

286

.GetAlternativeServiceName(self.name))

306

self.name = str(

307

self.server.GetAlternativeServiceName(self.name))

308

self.rename_count += 1

287

309

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

288

310

self.name)

289

self.remove()

311

if remove:

312

self.remove()

290

313

try:

291

314

self.add()

292

315

except dbus.exceptions.DBusException as error:

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

316

if (error.get_dbus_name()

317

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

318

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

319

return self.rename(remove=False)

320

else:

321

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

322

self.cleanup()

323

os._exit(1)

297

324

298

325

def remove(self):

299

326

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

337

364

self.rename()

338

365

elif state == avahi.ENTRY_GROUP_FAILURE:

339

366

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

340

unicode(error))

341

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

342

.format(error))

367

str(error))

368

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

343

369

344

370

def cleanup(self):

345

371

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

355

381

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

356

382

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

357

383

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

358

bad_states = { avahi.SERVER_INVALID:

359

"Zeroconf server invalid",

360

avahi.SERVER_REGISTERING: None,

361

avahi.SERVER_COLLISION:

362

"Zeroconf server name collision",

363

avahi.SERVER_FAILURE:

364

"Zeroconf server failure" }

384

bad_states = {

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

386

avahi.SERVER_REGISTERING: None,

387

avahi.SERVER_COLLISION: "Zeroconf server name collision",

388

avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

365

390

if state in bad_states:

366

391

if bad_states[state] is not None:

367

392

if error is None:

370

395

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

371

396

self.cleanup()

372

397

elif state == avahi.SERVER_RUNNING:

373

self.add()

398

try:

399

self.add()

400

except dbus.exceptions.DBusException as error:

401

if (error.get_dbus_name()

402

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

403

logger.info("Local Zeroconf service name"

404

" collision.")

405

return self.rename(remove=False)

406

else:

407

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

408

self.cleanup()

409

os._exit(1)

374

410

else:

375

411

if error is None:

376

412

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

386

422

follow_name_owner_changes=True),

387

423

avahi.DBUS_INTERFACE_SERVER)

388

424

self.server.connect_to_signal("StateChanged",

389

self.server_state_changed)

425

self.server_state_changed)

390

426

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

391

427

392

428

393

429

class AvahiServiceToSyslog(AvahiService):

394

def rename(self):

430

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

395

431

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

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

432

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

433

syslogger.setFormatter(logging.Formatter(

434

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

435

.format(self.name)))

401

436

return ret

402

437

403

404

def timedelta_to_milliseconds(td):

405

"Convert a datetime.timedelta() to milliseconds"

406

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

407

+ (td.seconds * 1000)

408

+ (td.microseconds // 1000))

409

438

def call_pipe(connection, # : multiprocessing.Connection

439

func, *args, **kwargs):

440

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

441

442

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

443

return value on the provided multiprocessing.Connection.

444

"""

445

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

446

connection.close()

410

447

411

448

class Client(object):

412

449

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

439

476

last_checker_status: integer between 0 and 255 reflecting exit

440

477

status of last checker. -1 reflects crashed

441

478

checker, -2 means no checker completed yet.

479

last_checker_signal: The signal which killed the last checker, if

480

last_checker_status is -1

442

481

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

443

482

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

444

483

D-Bus identifiers

457

496

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

458

497

"last_approval_request", "last_checked_ok",

459

498

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

460

client_defaults = { "timeout": "PT5M",

461

"extended_timeout": "PT15M",

462

"interval": "PT2M",

463

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

464

"host": "",

465

"approval_delay": "PT0S",

466

"approval_duration": "PT1S",

467

"approved_by_default": "True",

468

"enabled": "True",

469

}

470

471

def timeout_milliseconds(self):

472

"Return the 'timeout' attribute in milliseconds"

473

return timedelta_to_milliseconds(self.timeout)

474

475

def extended_timeout_milliseconds(self):

476

"Return the 'extended_timeout' attribute in milliseconds"

477

return timedelta_to_milliseconds(self.extended_timeout)

478

479

def interval_milliseconds(self):

480

"Return the 'interval' attribute in milliseconds"

481

return timedelta_to_milliseconds(self.interval)

482

483

def approval_delay_milliseconds(self):

484

return timedelta_to_milliseconds(self.approval_delay)

499

client_defaults = {

500

"timeout": "PT5M",

501

"extended_timeout": "PT15M",

502

"interval": "PT2M",

503

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

504

"host": "",

505

"approval_delay": "PT0S",

506

"approval_duration": "PT1S",

507

"approved_by_default": "True",

508

"enabled": "True",

509

}

485

510

486

511

@staticmethod

487

512

def config_parser(config):

503

528

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

504

529

"enabled")

505

530

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

506

534

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

507

535

.replace(" ", ""))

508

536

if "secret" in section:

513

541

"rb") as secfile:

514

542

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

515

543

else:

516

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

544

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

517

545

.format(section))

518

546

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

519

547

client["extended_timeout"] = string_to_delta(

536

564

server_settings = {}

537

565

self.server_settings = server_settings

538

566

# adding all client settings

539

for setting, value in settings.iteritems():

567

for setting, value in settings.items():

540

568

setattr(self, setting, value)

541

569

542

570

if self.enabled:

550

578

self.expires = None

551

579

552

580

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

553

# Uppercase and remove spaces from fingerprint for later

554

# comparison purposes with return value from the fingerprint()

555

# function

556

581

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

557

582

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

558

583

datetime.datetime.utcnow())

565

590

self.current_checker_command = None

566

591

self.approved = None

567

592

self.approvals_pending = 0

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

573

597

if not attr.startswith("_")]

574

598

self.client_structure.append("client_structure")

575

599

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

600

for name, t in inspect.getmembers(

601

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

580

602

if not name.startswith("_"):

581

603

self.client_structure.append(name)

582

604

624

646

# and every interval from then on.

625

647

if self.checker_initiator_tag is not None:

626

648

gobject.source_remove(self.checker_initiator_tag)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

630

652

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

631

653

if self.disable_initiator_tag is not None:

632

654

gobject.source_remove(self.disable_initiator_tag)

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

636

657

# Also start a new checker *right now*.

637

658

self.start_checker()

638

659

639

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

660

def checker_callback(self, source, condition, connection,

661

command):

640

662

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

641

663

self.checker_callback_tag = None

642

664

self.checker = None

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

665

# Read return code from connection (see call_pipe)

666

returncode = connection.recv()

667

connection.close()

668

669

if returncode >= 0:

670

self.last_checker_status = returncode

671

self.last_checker_signal = None

645

672

if self.last_checker_status == 0:

646

673

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

647

674

vars(self))

648

675

self.checked_ok()

649

676

else:

650

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

651

vars(self))

677

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

652

678

else:

653

679

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

654

681

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

655

682

vars(self))

683

return False

656

684

657

685

def checked_ok(self):

658

686

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

659

687

self.last_checked_ok = datetime.datetime.utcnow()

660

688

self.last_checker_status = 0

689

self.last_checker_signal = None

661

690

self.bump_timeout()

662

691

663

692

def bump_timeout(self, timeout=None):

668

697

gobject.source_remove(self.disable_initiator_tag)

669

698

self.disable_initiator_tag = None

670

699

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

674

702

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

675

703

676

704

def need_approval(self):

690

718

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

691

719

# should be.

692

720

693

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

694

try:

695

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

696

except AttributeError:

697

pass

698

except OSError as error:

699

if error.errno != errno.ECHILD:

700

raise

701

else:

702

if pid:

703

logger.warning("Checker was a zombie")

704

gobject.source_remove(self.checker_callback_tag)

705

self.checker_callback(pid, status,

706

self.current_checker_command)

721

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

722

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

723

self.checker.join()

724

self.checker = None

707

725

# Start a new checker if needed

708

726

if self.checker is None:

709

727

# Escape attributes for the shell

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

714

731

try:

715

732

command = self.checker_command % escaped_attrs

716

733

except TypeError as error:

717

734

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

718

self.checker_command, exc_info=error)

719

return True # Try again later

735

self.checker_command,

736

exc_info=error)

737

return True # Try again later

720

738

self.current_checker_command = command

721

try:

722

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

723

command, self.name)

724

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

725

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

726

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

727

# always replaced by /dev/null.)

728

# The exception is when not debugging but nevertheless

729

# running in the foreground; use the previously

730

# created wnull.

731

popen_args = {}

732

if (not self.server_settings["debug"]

733

and self.server_settings["foreground"]):

734

popen_args.update({"stdout": wnull,

735

"stderr": wnull })

736

self.checker = subprocess.Popen(command,

737

close_fds=True,

738

shell=True, cwd="/",

739

**popen_args)

740

except OSError as error:

741

logger.error("Failed to start subprocess",

742

exc_info=error)

743

return True

744

self.checker_callback_tag = (gobject.child_watch_add

745

(self.checker.pid,

746

self.checker_callback,

747

data=command))

748

# The checker may have completed before the gobject

749

# watch was added. Check for this.

750

try:

751

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

752

except OSError as error:

753

if error.errno == errno.ECHILD:

754

# This should never happen

755

logger.error("Child process vanished",

756

exc_info=error)

757

return True

758

raise

759

if pid:

760

gobject.source_remove(self.checker_callback_tag)

761

self.checker_callback(pid, status, command)

739

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

740

self.name)

741

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

742

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

743

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

744

# always replaced by /dev/null.)

745

# The exception is when not debugging but nevertheless

746

# running in the foreground; use the previously

747

# created wnull.

748

popen_args = { "close_fds": True,

749

"shell": True,

750

"cwd": "/" }

751

if (not self.server_settings["debug"]

752

and self.server_settings["foreground"]):

753

popen_args.update({"stdout": wnull,

754

"stderr": wnull })

755

pipe = multiprocessing.Pipe(duplex = False)

756

self.checker = multiprocessing.Process(

757

target = call_pipe,

758

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

759

kwargs = popen_args)

760

self.checker.start()

761

self.checker_callback_tag = gobject.io_add_watch(

762

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

763

self.checker_callback, pipe[0], command)

762

764

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

763

765

return True

764

766

770

772

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

771

773

return

772

774

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

773

try:

774

self.checker.terminate()

775

#time.sleep(0.5)

776

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

777

# self.checker.kill()

778

except OSError as error:

779

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

780

raise

775

self.checker.terminate()

781

776

self.checker = None

782

777

783

778

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

786

783

"""Decorators for marking methods of a DBusObjectWithProperties to

787

784

become properties on the D-Bus.

788

785

797

794

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

798

795

if byte_arrays and signature != "ay":

799

796

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

800

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

797

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

798

801

799

def decorator(func):

802

800

func._dbus_is_property = True

803

801

func._dbus_interface = dbus_interface

808

806

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

809

807

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

810

808

return func

809

811

810

return decorator

812

811

813

812

822

821

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

823

822

"false"}

824

823

"""

824

825

def decorator(func):

826

func._dbus_is_interface = True

827

func._dbus_interface = dbus_interface

828

func._dbus_name = dbus_interface

829

return func

830

831

return decorator

831

832

833

834

835

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

835

836

Usage:

836

837

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

837

841

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

838

842

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

842

843

def Property_dbus_property(self):

843

844

return dbus.Boolean(False)

844

845

"""

846

845

847

def decorator(func):

846

848

func._dbus_annotations = annotations

847

849

return func

850

848

851

return decorator

849

852

850

853

851

854

class DBusPropertyException(dbus.exceptions.DBusException):

852

855

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

853

856

"""

854

def __unicode__(self):

855

return unicode(str(self))

857

pass

856

858

857

859

858

860

class DBusPropertyAccessException(DBusPropertyException):

882

884

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

883

885

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

884

886

"""

885

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

887

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

886

888

False)

887

889

888

890

def _get_all_dbus_things(self, thing):

889

891

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

890

892

"""

891

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

892

name),

893

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

893

894

athing.__get__(self))

894

895

for cls in self.__class__.__mro__

895

896

for name, athing in

896

inspect.getmembers(cls,

897

self._is_dbus_thing(thing)))

897

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

898

899

def _get_dbus_property(self, interface_name, property_name):

900

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

901

property with the specified name and interface.

902

"""

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

903

for cls in self.__class__.__mro__:

904

for name, value in inspect.getmembers(

905

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

907

906

if (value._dbus_name == property_name

908

907

and value._dbus_interface == interface_name):

909

908

return value.__get__(self)

910

909

911

910

# No such property

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

911

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

912

self.dbus_object_path, interface_name, property_name))

915

913

916

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

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

in_signature="ss",

917

916

out_signature="v")

918

917

def Get(self, interface_name, property_name):

919

918

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

938

937

# signatures other than "ay".

939

938

if prop._dbus_signature != "ay":

940

939

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

941

"'ay' signature {0!r}"

940

"'ay' signature {!r}"

942

941

.format(prop._dbus_signature))

943

942

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

944

943

for byte in value))

945

944

prop(value)

946

945

947

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

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

947

in_signature="s",

948

out_signature="a{sv}")

949

def GetAll(self, interface_name):

950

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

965

if not hasattr(value, "variant_level"):

966

properties[name] = value

967

continue

968

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

969

value.variant_level+1)

968

properties[name] = type(value)(

969

value, variant_level = value.variant_level + 1)

970

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

971

972

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

973

def PropertiesChanged(self, interface_name, changed_properties,

974

invalidated_properties):

975

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

976

standard.

977

"""

978

pass

979

972

980

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

973

981

out_signature="s",

974

982

path_keyword='object_path',

982

990

connection)

983

991

try:

984

992

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

993

985

994

def make_tag(document, name, prop):

986

995

e = document.createElement("property")

987

996

e.setAttribute("name", name)

988

997

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

989

998

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

990

999

return e

1000

991

1001

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

992

1002

# Add property tags

993

1003

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

1005

1015

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

1006

1016

and prop._dbus_interface

1007

1017

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

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1013

1021

ann_tag = document.createElement(

1014

1022

"annotation")

1015

1023

ann_tag.setAttribute("name", name)

1018

1026

# Add interface annotation tags

1019

1027

for annotation, value in dict(

1020

1028

itertools.chain.from_iterable(

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1024

1032

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

1025

)).iteritems():

1033

)).items():

1026

1034

ann_tag = document.createElement("annotation")

1027

1035

ann_tag.setAttribute("name", annotation)

1028

1036

ann_tag.setAttribute("value", value)

1055

1063

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

1056

1064

if dt is None:

1057

1065

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1066

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

1060

1067

1061

1068

1062

1069

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1082

1089

(from DBusObjectWithProperties) and interfaces (from the

1083

1090

dbus_interface_annotations decorator).

1084

1091

"""

1092

1085

1093

def wrapper(cls):

1086

1094

for orig_interface_name, alt_interface_name in (

1087

alt_interface_names.iteritems()):

1095

alt_interface_names.items()):

1088

1096

attr = {}

1089

1097

interface_names = set()

1090

1098

# Go though all attributes of the class

1092

1100

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

1093

1101

# with the wrong interface name

1094

1102

if (not hasattr(attribute, "_dbus_interface")

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1103

or not attribute._dbus_interface.startswith(

1104

orig_interface_name)):

1097

1105

continue

1098

1106

# Create an alternate D-Bus interface name based on

1099

1107

# the current name

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1108

alt_interface = attribute._dbus_interface.replace(

1109

orig_interface_name, alt_interface_name)

1103

1110

interface_names.add(alt_interface)

1104

1111

# Is this a D-Bus signal?

1105

1112

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

1106

# Extract the original non-method undecorated

1107

# function by black magic

1108

nonmethod_func = (dict(

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

nonmethod_func = (dict(

1109

1117

zip(attribute.func_code.co_freevars,

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1118

attribute.__closure__))

1119

["func"].cell_contents)

1120

else:

1121

nonmethod_func = attribute

1112

1122

# Create a new, but exactly alike, function

1113

1123

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

1114

1124

# with the alternate D-Bus interface name

1115

new_function = (dbus.service.signal

1116

(alt_interface,

1117

attribute._dbus_signature)

1118

(types.FunctionType(

1119

nonmethod_func.func_code,

1120

nonmethod_func.func_globals,

1121

nonmethod_func.func_name,

1122

nonmethod_func.func_defaults,

1123

nonmethod_func.func_closure)))

1125

if sys.version_info.major == 2:

1126

new_function = types.FunctionType(

1127

nonmethod_func.func_code,

1128

nonmethod_func.func_globals,

1129

nonmethod_func.func_name,

1130

nonmethod_func.func_defaults,

1131

nonmethod_func.func_closure)

1132

else:

1133

new_function = types.FunctionType(

1134

nonmethod_func.__code__,

1135

nonmethod_func.__globals__,

1136

nonmethod_func.__name__,

1137

nonmethod_func.__defaults__,

1138

nonmethod_func.__closure__)

1139

new_function = (dbus.service.signal(

1140

alt_interface,

1141

attribute._dbus_signature)(new_function))

1124

1142

# Copy annotations, if any

1125

1143

try:

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1144

new_function._dbus_annotations = dict(

1145

attribute._dbus_annotations)

1128

1146

except AttributeError:

1129

1147

pass

1130

1148

# Define a creator of a function to call both the

1135

1153

"""This function is a scope container to pass

1136

1154

func1 and func2 to the "call_both" function

1137

1155

outside of its arguments"""

1156

1138

1157

def call_both(*args, **kwargs):

1139

1158

"""This function will emit two D-Bus

1140

1159

signals by calling func1 and func2"""

1141

1160

func1(*args, **kwargs)

1142

1161

func2(*args, **kwargs)

1162

1143

1163

return call_both

1144

1164

# Create the "call_both" function and add it to

1145

1165

# the class

1150

1170

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

1151

1171

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

1152

1172

# to the class.

1153

attr[attrname] = (dbus.service.method

1154

(alt_interface,

1155

attribute._dbus_in_signature,

1156

attribute._dbus_out_signature)

1157

(types.FunctionType

1158

(attribute.func_code,

1159

attribute.func_globals,

1160

attribute.func_name,

1161

attribute.func_defaults,

1162

attribute.func_closure)))

1173

attr[attrname] = (

1174

dbus.service.method(

1175

alt_interface,

1176

attribute._dbus_in_signature,

1177

attribute._dbus_out_signature)

1178

(types.FunctionType(attribute.func_code,

1179

attribute.func_globals,

1180

attribute.func_name,

1181

attribute.func_defaults,

1182

attribute.func_closure)))

1163

1183

# Copy annotations, if any

1164

1184

try:

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1185

attr[attrname]._dbus_annotations = dict(

1186

attribute._dbus_annotations)

1167

1187

except AttributeError:

1168

1188

pass

1169

1189

# Is this a D-Bus property?

1172

1192

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

1173

1193

# property with the alternate D-Bus interface

1174

1194

# name. Add it to the class.

1175

attr[attrname] = (dbus_service_property

1176

(alt_interface,

1177

attribute._dbus_signature,

1178

attribute._dbus_access,

1179

attribute

1180

._dbus_get_args_options

1181

["byte_arrays"])

1182

(types.FunctionType

1183

(attribute.func_code,

1184

attribute.func_globals,

1185

attribute.func_name,

1186

attribute.func_defaults,

1187

attribute.func_closure)))

1195

attr[attrname] = (dbus_service_property(

1196

alt_interface, attribute._dbus_signature,

1197

attribute._dbus_access,

1198

attribute._dbus_get_args_options

1199

["byte_arrays"])

1200

(types.FunctionType(

1201

attribute.func_code,

1202

attribute.func_globals,

1203

attribute.func_name,

1204

attribute.func_defaults,

1205

attribute.func_closure)))

1188

1206

# Copy annotations, if any

1189

1207

try:

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1208

attr[attrname]._dbus_annotations = dict(

1209

attribute._dbus_annotations)

1192

1210

except AttributeError:

1193

1211

pass

1194

1212

# Is this a D-Bus interface?

1197

1215

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

1198

1216

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

1199

1217

# to the class.

1200

attr[attrname] = (dbus_interface_annotations

1201

(alt_interface)

1202

(types.FunctionType

1203

(attribute.func_code,

1204

attribute.func_globals,

1205

attribute.func_name,

1206

attribute.func_defaults,

1207

attribute.func_closure)))

1218

attr[attrname] = (

1219

dbus_interface_annotations(alt_interface)

1220

(types.FunctionType(attribute.func_code,

1221

attribute.func_globals,

1222

attribute.func_name,

1223

attribute.func_defaults,

1224

attribute.func_closure)))

1208

1225

if deprecate:

1209

1226

# Deprecate all alternate interfaces

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1227

iname="_AlternateDBusNames_interface_annotation{}"

1211

1228

for interface_name in interface_names:

1229

1212

1230

@dbus_interface_annotations(interface_name)

1213

1231

def func(self):

1214

1232

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

1215

"true" }

1233

"true" }

1216

1234

# Find an unused name

1217

1235

for aname in (iname.format(i)

1218

1236

for i in itertools.count()):

1222

1240

if interface_names:

1223

1241

# Replace the class with a new subclass of it with

1224

1242

# methods, signals, etc. as created above.

1225

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

1226

(cls,), attr)

1243

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

1244

(cls, ), attr)

1227

1245

return cls

1246

1228

1247

return wrapper

1229

1248

1230

1249

1231

1250

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

1232

"se.bsnet.fukt.Mandos"})

1251

"se.bsnet.fukt.Mandos"})

1233

1252

class ClientDBus(Client, DBusObjectWithProperties):

1234

1253

"""A Client class using D-Bus

1235

1254

1239

1258

"""

1240

1259

1241

1260

runtime_expansions = (Client.runtime_expansions

1242

+ ("dbus_object_path",))

1261

+ ("dbus_object_path", ))

1262

1263

_interface = "se.recompile.Mandos.Client"

1243

1264

1244

1265

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

1245

1266

1248

1269

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

1249

1270

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

1250

1271

# the D-Bus

1251

client_object_name = unicode(self.name).translate(

1272

client_object_name = str(self.name).translate(

1252

1273

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

1253

1274

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

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1275

self.dbus_object_path = dbus.ObjectPath(

1276

"/clients/" + client_object_name)

1256

1277

DBusObjectWithProperties.__init__(self, self.bus,

1257

1278

self.dbus_object_path)

1258

1279

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1280

def notifychangeproperty(transform_func, dbus_name,

1281

type_func=lambda x: x,

1282

variant_level=1,

1283

invalidate_only=False,

1284

_interface=_interface):

1262

1285

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

1263

1286

its changes to DBus.

1264

1287

1269

1292

to the D-Bus. Default: no transform

1270

1293

variant_level: D-Bus variant level. Default: 1

1271

1294

"""

1272

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

1295

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

1296

1273

1297

def setter(self, value):

1274

1298

if hasattr(self, "dbus_object_path"):

1275

1299

if (not hasattr(self, attrname) or

1276

1300

type_func(getattr(self, attrname, None))

1277

1301

!= type_func(value)):

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1302

if invalidate_only:

1303

self.PropertiesChanged(

1304

_interface, dbus.Dictionary(),

1305

dbus.Array((dbus_name, )))

1306

else:

1307

dbus_value = transform_func(

1308

type_func(value),

1309

variant_level = variant_level)

1310

self.PropertyChanged(dbus.String(dbus_name),

1311

dbus_value)

1312

self.PropertiesChanged(

1313

_interface,

1314

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

1315

dbus_value }),

1316

dbus.Array())

1283

1317

setattr(self, attrname, value)

1284

1318

1285

1319

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

1291

1325

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

1292

1326

last_enabled = notifychangeproperty(datetime_to_dbus,

1293

1327

"LastEnabled")

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1328

checker = notifychangeproperty(

1329

dbus.Boolean, "CheckerRunning",

1330

type_func = lambda checker: checker is not None)

1297

1331

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1298

1332

"LastCheckedOK")

1299

1333

last_checker_status = notifychangeproperty(dbus.Int16,

1302

1336

datetime_to_dbus, "LastApprovalRequest")

1303

1337

approved_by_default = notifychangeproperty(dbus.Boolean,

1304

1338

"ApprovedByDefault")

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1339

approval_delay = notifychangeproperty(

1340

dbus.UInt64, "ApprovalDelay",

1341

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

1309

1342

approval_duration = notifychangeproperty(

1310

1343

dbus.UInt64, "ApprovalDuration",

1311

type_func = timedelta_to_milliseconds)

1344

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

1312

1345

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1346

timeout = notifychangeproperty(

1347

dbus.UInt64, "Timeout",

1348

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

1316

1349

extended_timeout = notifychangeproperty(

1317

1350

dbus.UInt64, "ExtendedTimeout",

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1351

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

1352

interval = notifychangeproperty(

1353

dbus.UInt64, "Interval",

1354

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

1323

1355

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

1356

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

1357

invalidate_only=True)

1324

1358

1325

1359

del notifychangeproperty

1326

1360

1333

1367

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

1334

1368

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

1335

1369

1336

def checker_callback(self, pid, condition, command,

1337

*args, **kwargs):

1338

self.checker_callback_tag = None

1339

self.checker = None

1340

if os.WIFEXITED(condition):

1341

exitstatus = os.WEXITSTATUS(condition)

1370

def checker_callback(self, source, condition,

1371

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

1372

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

1373

connection, command, *args,

1374

**kwargs)

1375

exitstatus = self.last_checker_status

1376

if exitstatus >= 0:

1342

1377

# Emit D-Bus signal

1343

1378

self.CheckerCompleted(dbus.Int16(exitstatus),

1344

dbus.Int64(condition),

1379

dbus.Int64(0),

1345

1380

dbus.String(command))

1346

1381

else:

1347

1382

# Emit D-Bus signal

1348

1383

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

1349

dbus.Int64(condition),

1384

dbus.Int64(

1385

self.last_checker_signal),

1350

1386

dbus.String(command))

1351

1352

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

1353

*args, **kwargs)

1387

return ret

1354

1388

1355

1389

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

1356

1390

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

1368

1402

1369

1403

def approve(self, value=True):

1370

1404

self.approved = value

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1405

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

1406

* 1000), self._reset_approved)

1374

1407

self.send_changedstate()

1375

1408

1376

1409

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1378

1410

1379

1411

## Interfaces

1380

1412

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1386

1413

## Signals

1387

1414

1388

1415

# CheckerCompleted - signal

1398

1425

pass

1399

1426

1400

1427

# PropertyChanged - signal

1428

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

1401

1429

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

1402

1430

def PropertyChanged(self, property, value):

1403

1431

"D-Bus signal"

1467

1495

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

1468

1496

1469

1497

# ApprovedByDefault - property

1470

@dbus_service_property(_interface, signature="b",

1498

@dbus_service_property(_interface,

1499

signature="b",

1471

1500

access="readwrite")

1472

1501

def ApprovedByDefault_dbus_property(self, value=None):

1473

1502

if value is None: # get

1475

1504

self.approved_by_default = bool(value)

1476

1505

1477

1506

# ApprovalDelay - property

1478

@dbus_service_property(_interface, signature="t",

1507

@dbus_service_property(_interface,

1508

signature="t",

1479

1509

access="readwrite")

1480

1510

def ApprovalDelay_dbus_property(self, value=None):

1481

1511

if value is None: # get

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1512

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

1513

* 1000)

1483

1514

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

1484

1515

1485

1516

# ApprovalDuration - property

1486

@dbus_service_property(_interface, signature="t",

1517

@dbus_service_property(_interface,

1518

signature="t",

1487

1519

access="readwrite")

1488

1520

def ApprovalDuration_dbus_property(self, value=None):

1489

1521

if value is None: # get

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1522

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

1523

* 1000)

1492

1524

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

1493

1525

1494

1526

# Name - property

1502

1534

return dbus.String(self.fingerprint)

1503

1535

1504

1536

# Host - property

1505

@dbus_service_property(_interface, signature="s",

1537

@dbus_service_property(_interface,

1538

signature="s",

1506

1539

access="readwrite")

1507

1540

def Host_dbus_property(self, value=None):

1508

1541

if value is None: # get

1509

1542

return dbus.String(self.host)

1510

self.host = unicode(value)

1543

self.host = str(value)

1511

1544

1512

1545

# Created - property

1513

1546

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

1520

1553

return datetime_to_dbus(self.last_enabled)

1521

1554

1522

1555

# Enabled - property

1523

@dbus_service_property(_interface, signature="b",

1556

@dbus_service_property(_interface,

1557

signature="b",

1524

1558

access="readwrite")

1525

1559

def Enabled_dbus_property(self, value=None):

1526

1560

if value is None: # get

1531

1565

self.disable()

1532

1566

1533

1567

# LastCheckedOK - property

1534

@dbus_service_property(_interface, signature="s",

1568

@dbus_service_property(_interface,

1569

signature="s",

1535

1570

access="readwrite")

1536

1571

def LastCheckedOK_dbus_property(self, value=None):

1537

1572

if value is not None:

1540

1575

return datetime_to_dbus(self.last_checked_ok)

1541

1576

1542

1577

# LastCheckerStatus - property

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

1578

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

1545

1579

def LastCheckerStatus_dbus_property(self):

1546

1580

return dbus.Int16(self.last_checker_status)

1547

1581

1556

1590

return datetime_to_dbus(self.last_approval_request)

1557

1591

1558

1592

# Timeout - property

1559

@dbus_service_property(_interface, signature="t",

1593

@dbus_service_property(_interface,

1594

signature="t",

1560

1595

access="readwrite")

1561

1596

def Timeout_dbus_property(self, value=None):

1562

1597

if value is None: # get

1563

return dbus.UInt64(self.timeout_milliseconds())

1598

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

1564

1599

old_timeout = self.timeout

1565

1600

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

1566

1601

# Reschedule disabling

1575

1610

is None):

1576

1611

return

1577

1612

gobject.source_remove(self.disable_initiator_tag)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1613

self.disable_initiator_tag = gobject.timeout_add(

1614

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

1615

self.disable)

1582

1616

1583

1617

# ExtendedTimeout - property

1584

@dbus_service_property(_interface, signature="t",

1618

@dbus_service_property(_interface,

1619

signature="t",

1585

1620

access="readwrite")

1586

1621

def ExtendedTimeout_dbus_property(self, value=None):

1587

1622

if value is None: # get

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

1623

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

1624

* 1000)

1589

1625

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

1590

1626

1591

1627

# Interval - property

1592

@dbus_service_property(_interface, signature="t",

1628

@dbus_service_property(_interface,

1629

signature="t",

1593

1630

access="readwrite")

1594

1631

def Interval_dbus_property(self, value=None):

1595

1632

if value is None: # get

1596

return dbus.UInt64(self.interval_milliseconds())

1633

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

1597

1634

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

1598

1635

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

1599

1636

return

1600

1637

if self.enabled:

1601

1638

# Reschedule checker run

1602

1639

gobject.source_remove(self.checker_initiator_tag)

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1640

self.checker_initiator_tag = gobject.timeout_add(

1641

value, self.start_checker)

1642

self.start_checker() # Start one now, too

1606

1643

1607

1644

# Checker - property

1608

@dbus_service_property(_interface, signature="s",

1645

@dbus_service_property(_interface,

1646

signature="s",

1609

1647

access="readwrite")

1610

1648

def Checker_dbus_property(self, value=None):

1611

1649

if value is None: # get

1612

1650

return dbus.String(self.checker_command)

1613

self.checker_command = unicode(value)

1651

self.checker_command = str(value)

1614

1652

1615

1653

# CheckerRunning - property

1616

@dbus_service_property(_interface, signature="b",

1654

@dbus_service_property(_interface,

1655

signature="b",

1617

1656

access="readwrite")

1618

1657

def CheckerRunning_dbus_property(self, value=None):

1619

1658

if value is None: # get

1629

1668

return self.dbus_object_path # is already a dbus.ObjectPath

1630

1669

1631

1670

# Secret = property

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

1671

@dbus_service_property(_interface,

1672

signature="ay",

1673

access="write",

1674

byte_arrays=True)

1634

1675

def Secret_dbus_property(self, value):

1635

self.secret = str(value)

1676

self.secret = bytes(value)

1636

1677

1637

1678

del _interface

1638

1679

1642

1683

self._pipe = child_pipe

1643

1684

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

1644

1685

if not self._pipe.recv():

1645

raise KeyError()

1686

raise KeyError(fpr)

1646

1687

1647

1688

def __getattribute__(self, name):

1648

1689

if name == '_pipe':

1652

1693

if data[0] == 'data':

1653

1694

return data[1]

1654

1695

if data[0] == 'function':

1696

1655

1697

def func(*args, **kwargs):

1656

1698

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

1657

1699

return self._pipe.recv()[1]

1700

1658

1701

return func

1659

1702

1660

1703

def __setattr__(self, name, value):

1672

1715

def handle(self):

1673

1716

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

1674

1717

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

1675

unicode(self.client_address))

1718

str(self.client_address))

1676

1719

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

1677

1720

self.server.child_pipe.fileno())

1678

1721

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1722

session = gnutls.connection.ClientSession(

1723

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

1683

1724

1684

1725

# Note: gnutls.connection.X509Credentials is really a

1685

1726

# generic GnuTLS certificate credentials object so long as

1694

1735

priority = self.server.gnutls_priority

1695

1736

if priority is None:

1696

1737

priority = "NORMAL"

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1700

1740

1701

1741

# Start communication using the Mandos protocol

1702

1742

# Get protocol number

1722

1762

approval_required = False

1723

1763

try:

1724

1764

try:

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1727

1767

except (TypeError,

1728

1768

gnutls.errors.GNUTLSError) as error:

1729

1769

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

1744

1784

while True:

1745

1785

if not client.enabled:

1746

1786

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

1747

client.name)

1787

client.name)

1748

1788

if self.server.use_dbus:

1749

1789

# Emit D-Bus signal

1750

1790

client.Rejected("Disabled")

1759

1799

if self.server.use_dbus:

1760

1800

# Emit D-Bus signal

1761

1801

client.NeedApproval(

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

1802

client.approval_delay.total_seconds()

1803

* 1000, client.approved_by_default)

1764

1804

else:

1765

1805

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

1766

1806

client.name)

1772

1812

#wait until timeout or approved

1773

1813

time = datetime.datetime.now()

1774

1814

client.changedstate.acquire()

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

1815

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

1778

1816

client.changedstate.release()

1779

1817

time2 = datetime.datetime.now()

1780

1818

if (time2 - time) >= delay:

1799

1837

logger.warning("gnutls send failed",

1800

1838

exc_info=error)

1801

1839

return

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1805

1843

sent_size += sent

1806

1844

1807

1845

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

1824

1862

def peer_certificate(session):

1825

1863

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

1826

1864

# If not an OpenPGP certificate...

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1829

1867

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1830

1868

# ...do the normal thing

1831

1869

return session.peer_certificate

1845

1883

def fingerprint(openpgp):

1846

1884

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1847

1885

# New GnuTLS "datum" with the OpenPGP public key

1848

datum = (gnutls.library.types

1849

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

1850

ctypes.POINTER

1851

(ctypes.c_ubyte)),

1852

ctypes.c_uint(len(openpgp))))

1886

datum = gnutls.library.types.gnutls_datum_t(

1887

ctypes.cast(ctypes.c_char_p(openpgp),

1888

ctypes.POINTER(ctypes.c_ubyte)),

1889

ctypes.c_uint(len(openpgp)))

1853

1890

# New empty GnuTLS certificate

1854

1891

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

1857

1894

# Import the OpenPGP public key into the certificate

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1862

1898

# Verify the self signature in the key

1863

1899

crtverify = ctypes.c_uint()

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

1867

1902

if crtverify.value != 0:

1868

1903

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

1871

1906

# New buffer for the fingerprint

1872

1907

buf = ctypes.create_string_buffer(20)

1873

1908

buf_len = ctypes.c_size_t()

1874

1909

# Get the fingerprint from the certificate into the buffer

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

1878

1912

# Deinit the certificate

1879

1913

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1880

1914

# Convert the buffer to a Python bytestring

1886

1920

1887

1921

class MultiprocessingMixIn(object):

1888

1922

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

1923

1889

1924

def sub_process_main(self, request, address):

1890

1925

try:

1891

1926

self.finish_request(request, address)

1903

1938

1904

1939

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1905

1940

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

1941

1906

1942

def process_request(self, request, client_address):

1907

1943

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

1908

1944

1929

1965

interface: None or a network interface name (string)

1930

1966

use_ipv6: Boolean; to use IPv6 or not

1931

1967

"""

1968

1932

1969

def __init__(self, server_address, RequestHandlerClass,

1933

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

1970

interface=None,

1971

use_ipv6=True,

1972

socketfd=None):

1934

1973

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

1935

1974

creating a new one with socket.socket().

1936

1975

"""

1977

2016

self.interface)

1978

2017

else:

1979

2018

try:

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

1983

2022

except socket.error as error:

1984

2023

if error.errno == errno.EPERM:

1985

2024

logger.error("No permission to bind to"

2003

2042

self.server_address = (any_address,

2004

2043

self.server_address[1])

2005

2044

elif not self.server_address[1]:

2006

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

2007

0)

2045

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

2008

2046

# if self.interface:

2009

2047

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

2010

2048

# 0, # port

2024

2062

2025

2063

Assumes a gobject.MainLoop event loop.

2026

2064

"""

2065

2027

2066

def __init__(self, server_address, RequestHandlerClass,

2028

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

2029

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

2067

interface=None,

2068

use_ipv6=True,

2069

clients=None,

2070

gnutls_priority=None,

2071

use_dbus=True,

2072

socketfd=None):

2030

2073

self.enabled = False

2031

2074

self.clients = clients

2032

2075

if self.clients is None:

2038

2081

interface = interface,

2039

2082

use_ipv6 = use_ipv6,

2040

2083

socketfd = socketfd)

2084

2041

2085

def server_activate(self):

2042

2086

if self.enabled:

2043

2087

return socketserver.TCPServer.server_activate(self)

2047

2091

2048

2092

def add_pipe(self, parent_pipe, proc):

2049

2093

# Call "handle_ipc" for both data and EOF events

2050

gobject.io_add_watch(parent_pipe.fileno(),

2051

gobject.IO_IN | gobject.IO_HUP,

2052

functools.partial(self.handle_ipc,

2053

parent_pipe =

2054

parent_pipe,

2055

proc = proc))

2094

gobject.io_add_watch(

2095

parent_pipe.fileno(),

2096

gobject.IO_IN | gobject.IO_HUP,

2097

functools.partial(self.handle_ipc,

2098

parent_pipe = parent_pipe,

2099

proc = proc))

2056

2100

2057

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

2058

proc = None, client_object=None):

2101

def handle_ipc(self, source, condition,

2102

parent_pipe=None,

2103

proc = None,

2104

client_object=None):

2059

2105

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

2060

2106

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

2061

2107

# Wait for other process to exit

2084

2130

parent_pipe.send(False)

2085

2131

return False

2086

2132

2087

gobject.io_add_watch(parent_pipe.fileno(),

2088

gobject.IO_IN | gobject.IO_HUP,

2089

functools.partial(self.handle_ipc,

2090

parent_pipe =

2091

parent_pipe,

2092

proc = proc,

2093

client_object =

2094

client))

2133

gobject.io_add_watch(

2134

parent_pipe.fileno(),

2135

gobject.IO_IN | gobject.IO_HUP,

2136

functools.partial(self.handle_ipc,

2137

parent_pipe = parent_pipe,

2138

proc = proc,

2139

client_object = client))

2095

2140

parent_pipe.send(True)

2096

2141

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

2097

2142

# same fileno

2103

2148

2104

2149

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

2105

2150

funcname)(*args,

2106

**kwargs)))

2151

**kwargs)))

2107

2152

2108

2153

if command == 'getattr':

2109

2154

attrname = request[1]

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2155

if isinstance(client_object.__getattribute__(attrname),

2156

collections.Callable):

2157

parent_pipe.send(('function', ))

2112

2158

else:

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2159

parent_pipe.send((

2160

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

2115

2161

2116

2162

if command == 'setattr':

2117

2163

attrname = request[1]

2148

2194

# avoid excessive use of external libraries.

2149

2195

2150

2196

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

2151

Token = collections.namedtuple("Token",

2152

("regexp", # To match token; if

2153

# "value" is not None,

2154

# must have a "group"

2155

# containing digits

2156

"value", # datetime.timedelta or

2157

# None

2158

"followers")) # Tokens valid after

2159

# this token

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

2160

2202

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

2161

2203

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

2162

2204

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

2163

2205

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

2164

2206

datetime.timedelta(seconds=1),

2165

frozenset((token_end,)))

2207

frozenset((token_end, )))

2166

2208

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

2167

2209

datetime.timedelta(minutes=1),

2168

2210

frozenset((token_second, token_end)))

2184

2226

frozenset((token_month, token_end)))

2185

2227

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

2186

2228

datetime.timedelta(weeks=1),

2187

frozenset((token_end,)))

2229

frozenset((token_end, )))

2188

2230

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

2189

2231

frozenset((token_year, token_month,

2190

2232

token_day, token_time,

2191

token_week))),

2233

token_week)))

2192

2234

# Define starting values

2193

2235

value = datetime.timedelta() # Value so far

2194

2236

found_token = None

2195

followers = frozenset(token_duration,) # Following valid tokens

2237

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

2196

2238

s = duration # String left to parse

2197

2239

# Loop until end token is found

2198

2240

while found_token is not token_end:

2215

2257

break

2216

2258

else:

2217

2259

# No currently valid tokens were found

2218

raise ValueError("Invalid RFC 3339 duration")

2260

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

2261

.format(duration))

2219

2262

# End token found

2220

2263

return value

2221

2264

2245

2288

timevalue = datetime.timedelta(0)

2246

2289

for s in interval.split():

2247

2290

try:

2248

suffix = unicode(s[-1])

2291

suffix = s[-1]

2249

2292

value = int(s[:-1])

2250

2293

if suffix == "d":

2251

2294

delta = datetime.timedelta(value)

2258

2301

elif suffix == "w":

2259

2302

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

2260

2303

else:

2261

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

2262

.format(suffix))

2304

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

2263

2305

except IndexError as e:

2264

2306

raise ValueError(*(e.args))

2265

2307

timevalue += delta

2282

2324

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

2283

2325

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

2284

2326

raise OSError(errno.ENODEV,

2285

"{0} not a character device"

2327

"{} not a character device"

2286

2328

.format(os.devnull))

2287

2329

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

2288

2330

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

2298

2340

2299

2341

parser = argparse.ArgumentParser()

2300

2342

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

2301

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

2343

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

2302

2344

help="show version number and exit")

2303

2345

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

2304

2346

help="Bind to interface IF")

2354

2396

"port": "",

2355

2397

"debug": "False",

2356

2398

"priority":

2357

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

2399

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

2400

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

2358

2401

"servicename": "Mandos",

2359

2402

"use_dbus": "True",

2360

2403

"use_ipv6": "True",

2364

2407

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

2365

2408

"foreground": "False",

2366

2409

"zeroconf": "True",

2367

}

2410

}

2368

2411

2369

2412

# Parse config file for server-global settings

2370

2413

server_config = configparser.SafeConfigParser(server_defaults)

2371

2414

del server_defaults

2372

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

2373

"mandos.conf"))

2415

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

2374

2416

# Convert the SafeConfigParser object to a dict

2375

2417

server_settings = server_config.defaults()

2376

2418

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

2394

2436

# Override the settings from the config file with command line

2395

2437

# options, if set.

2396

2438

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

2397

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

2398

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

2399

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

2439

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

2440

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

2441

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

2400

2442

value = getattr(options, option)

2401

2443

if value is not None:

2402

2444

server_settings[option] = value

2403

2445

del options

2404

2446

# Force all strings to be unicode

2405

2447

for option in server_settings.keys():

2406

if type(server_settings[option]) is str:

2407

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

2448

if isinstance(server_settings[option], bytes):

2449

server_settings[option] = (server_settings[option]

2450

.decode("utf-8"))

2408

2451

# Force all boolean options to be boolean

2409

2452

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

2410

2453

"foreground", "zeroconf"):

2416

2459

2417

2460

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

2418

2461

2419

if (not server_settings["zeroconf"] and

2420

not (server_settings["port"]

2421

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

2422

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

2423

" Zeroconf")

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")

2424

2466

2425

2467

# For convenience

2426

2468

debug = server_settings["debug"]

2442

2484

initlogger(debug, level)

2443

2485

2444

2486

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

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2487

syslogger.setFormatter(

2488

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

2489

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

2490

server_settings["servicename"])))

2450

2491

2451

2492

# Parse config file with clients

2452

2493

client_config = configparser.SafeConfigParser(Client

2460

2501

socketfd = None

2461

2502

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

2462

2503

socketfd = server_settings["socket"]

2463

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

2464

server_settings["port"]),

2465

ClientHandler,

2466

interface=(server_settings["interface"]

2467

or None),

2468

use_ipv6=use_ipv6,

2469

gnutls_priority=

2470

server_settings["priority"],

2471

use_dbus=use_dbus,

2472

socketfd=socketfd)

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)

2473

2512

if not foreground:

2474

2513

pidfilename = "/run/mandos.pid"

2475

2514

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

2476

2515

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

2477

2516

pidfile = None

2478

2517

try:

2479

pidfile = open(pidfilename, "w")

2518

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

2480

2519

except IOError as e:

2481

2520

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

2482

2521

exc_info=e)

2509

2548

def debug_gnutls(level, string):

2510

2549

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

2511

2550

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2514

2553

2515

2554

# Redirect stdin so all checkers get /dev/null

2516

2555

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

2536

2575

if use_dbus:

2537

2576

try:

2538

2577

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

2539

bus, do_not_queue=True)

2540

old_bus_name = (dbus.service.BusName

2541

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

2542

do_not_queue=True))

2543

except dbus.exceptions.NameExistsException as e:

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:

2544

2584

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

2545

2585

use_dbus = False

2546

2586

server_settings["use_dbus"] = False

2547

2587

tcp_server.use_dbus = False

2548

2588

if zeroconf:

2549

2589

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

2590

service = AvahiServiceToSyslog(

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

2554

2595

if server_settings["interface"]:

2555

service.interface = (if_nametoindex

2556

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

2596

service.interface = if_nametoindex(

2597

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

2557

2598

2558

2599

global multiprocessing_manager

2559

2600

multiprocessing_manager = multiprocessing.Manager()

2578

2619

if server_settings["restore"]:

2579

2620

try:

2580

2621

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

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

2583

2624

os.remove(stored_state_path)

2584

2625

except IOError as e:

2585

2626

if e.errno == errno.ENOENT:

2586

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

2587

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

2627

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

2628

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

2588

2629

else:

2589

2630

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

2590

2631

exc_info=e)

2591

2632

raise

2592

2633

except EOFError as e:

2593

2634

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

2594

"EOFError:", exc_info=e)

2635

"EOFError:",

2636

exc_info=e)

2595

2637

2596

2638

with PGPEngine() as pgp:

2597

for client_name, client in clients_data.iteritems():

2639

for client_name, client in clients_data.items():

2598

2640

# Skip removed clients

2599

2641

if client_name not in client_settings:

2600

2642

continue

2609

2651

# For each value in new config, check if it

2610

2652

# differs from the old config value (Except for

2611

2653

# the "secret" attribute)

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

2654

if (name != "secret"

2655

and (value !=

2656

old_client_settings[client_name][name])):

2615

2657

client[name] = value

2616

2658

except KeyError:

2617

2659

pass

2618

2660

2619

2661

# Clients who has passed its expire date can still be

2620

# enabled if its last checker was successful. Clients

2662

# enabled if its last checker was successful. A Client

2621

2663

# whose checker succeeded before we stored its state is

2622

2664

# assumed to have successfully run all checkers during

2623

2665

# downtime.

2625

2667

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

2626

2668

if not client["last_checked_ok"]:

2627

2669

logger.warning(

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

2631

2673

client["enabled"] = False

2632

2674

elif client["last_checker_status"] != 0:

2633

2675

logger.warning(

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

2638

2681

client["enabled"] = False

2639

2682

else:

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

2683

client["expires"] = (

2684

datetime.datetime.utcnow()

2685

+ client["timeout"])

2643

2686

logger.debug("Last checker succeeded,"

2644

" keeping {0} enabled"

2645

.format(client_name))

2687

" keeping {} enabled".format(

2688

client_name))

2646

2689

try:

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

2690

client["secret"] = pgp.decrypt(

2691

client["encrypted_secret"],

2692

client_settings[client_name]["secret"])

2651

2693

except PGPError:

2652

2694

# If decryption fails, we use secret from new settings

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2695

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

2696

client_name))

2697

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

2698

["secret"])

2657

2699

2658

2700

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

2659

2701

for client_name in (set(old_client_settings)

2664

2706

clients_data[client_name] = client_settings[client_name]

2665

2707

2666

2708

# Create all client objects

2667

for client_name, client in clients_data.iteritems():

2709

for client_name, client in clients_data.items():

2668

2710

tcp_server.clients[client_name] = client_class(

2669

name = client_name, settings = client,

2711

name = client_name,

2712

settings = client,

2670

2713

server_settings = server_settings)

2671

2714

2672

2715

if not tcp_server.clients:

2674

2717

2675

2718

if not foreground:

2676

2719

if pidfile is not None:

2720

pid = os.getpid()

2677

2721

try:

2678

2722

with pidfile:

2679

pid = os.getpid()

2680

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

2723

print(pid, file=pidfile)

2681

2724

except IOError:

2682

2725

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

2683

2726

pidfilename, pid)

2688

2731

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

2689

2732

2690

2733

if use_dbus:

2691

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

2692

"se.bsnet.fukt.Mandos"})

2734

2735

@alternate_dbus_interfaces(

2736

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

2693

2737

class MandosDBusService(DBusObjectWithProperties):

2694

2738

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

2739

2695

2740

def __init__(self):

2696

2741

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

2742

2697

2743

_interface = "se.recompile.Mandos"

2698

2744

2699

2745

@dbus_interface_annotations(_interface)

2700

2746

def _foo(self):

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2747

return {

2748

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

2749

"false" }

2704

2750

2705

2751

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

2706

2752

def ClientAdded(self, objpath):

2720

2766

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

2721

2767

def GetAllClients(self):

2722

2768

"D-Bus method"

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2769

return dbus.Array(c.dbus_object_path for c in

2725

2770

tcp_server.clients.itervalues())

2726

2771

2727

2772

@dbus.service.method(_interface,

2729

2774

def GetAllClientsWithProperties(self):

2730

2775

"D-Bus method"

2731

2776

return dbus.Dictionary(

2732

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

2733

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

2777

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

2778

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

2734

2779

signature="oa{sv}")

2735

2780

2736

2781

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

2774

2819

2775

2820

# A list of attributes that can not be pickled

2776

2821

# + secret.

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

2822

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

2823

"checker", "server_settings" }

2824

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

2825

.Object):

2781

2826

exclude.add(name)

2782

2827

2783

2828

client_dict["encrypted_secret"] = (client

2790

2835

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

2791

2836

2792

2837

try:

2793

with (tempfile.NamedTemporaryFile

2794

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

2795

dir=os.path.dirname(stored_state_path),

2796

delete=False)) as stored_state:

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:

2797

2844

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

2798

tempname=stored_state.name

2845

tempname = stored_state.name

2799

2846

os.rename(tempname, stored_state_path)

2800

2847

except (IOError, OSError) as e:

2801

2848

if not debug:

2804

2851

except NameError:

2805

2852

pass

2806

2853

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

2807

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

2854

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

2808

2855

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

2809

2856

else:

2810

2857

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

2820

2867

client.disable(quiet=True)

2821

2868

if use_dbus:

2822

2869

# Emit D-Bus signal

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

2826

2872

client_settings.clear()

2827

2873

2828

2874

atexit.register(cleanup)

2881

2927

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

2882

2928

cleanup()

2883

2929

2930

2884

2931

if __name__ == '__main__':

2885

2932

main()