/mandos/trunk : revision 713

1

#!/usr/bin/python2.7

1

#!/usr/bin/python

2

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

3

#

4

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

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

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

18

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

36

37

from future_builtins import *

38

39

try:

40

import SocketServer as socketserver

41

except ImportError:

42

import socketserver

39

import SocketServer as socketserver

43

40

import socket

44

41

import argparse

45

42

import datetime

50

47

import gnutls.library.functions

51

48

import gnutls.library.constants

52

49

import gnutls.library.types

53

try:

54

import ConfigParser as configparser

55

except ImportError:

56

import configparser

50

import ConfigParser as configparser

57

51

import sys

58

52

import re

59

53

import os

68

62

import struct

69

63

import fcntl

70

64

import functools

71

try:

72

import cPickle as pickle

73

except ImportError:

74

import pickle

65

import cPickle as pickle

75

66

import multiprocessing

76

67

import types

77

68

import binascii

78

69

import tempfile

79

70

import itertools

80

71

import collections

81

import codecs

82

72

83

73

import dbus

84

74

import dbus.service

85

try:

86

import gobject

87

except ImportError:

88

from gi.repository import GObject as gobject

75

import gobject

89

76

import avahi

90

77

from dbus.mainloop.glib import DBusGMainLoop

91

78

import ctypes

101

88

except ImportError:

102

89

SO_BINDTODEVICE = None

103

90

104

if sys.version_info.major == 2:

105

str = unicode

106

107

version = "1.6.9"

91

version = "1.6.6"

108

92

stored_state_file = "clients.pickle"

109

93

110

94

logger = logging.getLogger()

111

95

syslogger = None

112

96

113

97

try:

114

if_nametoindex = ctypes.cdll.LoadLibrary(

115

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

98

if_nametoindex = (ctypes.cdll.LoadLibrary

99

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

100

.if_nametoindex)

116

101

except (OSError, AttributeError):

117

118

102

def if_nametoindex(interface):

119

103

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

120

104

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

121

105

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

122

106

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

123

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

124

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

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

125

111

return interface_index

126

112

127

113

129

115

"""init logger and add loglevel"""

130

116

131

117

global syslogger

132

syslogger = (logging.handlers.SysLogHandler(

133

facility = logging.handlers.SysLogHandler.LOG_DAEMON,

134

address = "/dev/log"))

118

syslogger = (logging.handlers.SysLogHandler

119

(facility =

120

logging.handlers.SysLogHandler.LOG_DAEMON,

121

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

135

122

syslogger.setFormatter(logging.Formatter

136

123

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

137

124

' %(message)s'))

154

141

155

142

class PGPEngine(object):

156

143

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

157

158

144

def __init__(self):

159

145

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

160

146

self.gnupgargs = ['--batch',

199

185

200

186

def encrypt(self, data, password):

201

187

passphrase = self.password_encode(password)

202

with tempfile.NamedTemporaryFile(

203

dir=self.tempdir) as passfile:

188

with tempfile.NamedTemporaryFile(dir=self.tempdir

189

) as passfile:

204

190

passfile.write(passphrase)

205

191

passfile.flush()

206

192

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

217

203

218

204

def decrypt(self, data, password):

219

205

passphrase = self.password_encode(password)

220

with tempfile.NamedTemporaryFile(

221

dir = self.tempdir) as passfile:

206

with tempfile.NamedTemporaryFile(dir = self.tempdir

207

) as passfile:

222

208

passfile.write(passphrase)

223

209

passfile.flush()

224

210

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

228

214

stdin = subprocess.PIPE,

229

215

stdout = subprocess.PIPE,

230

216

stderr = subprocess.PIPE)

231

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

217

decrypted_plaintext, err = proc.communicate(input

218

= data)

232

219

if proc.returncode != 0:

233

220

raise PGPError(err)

234

221

return decrypted_plaintext

237

224

class AvahiError(Exception):

238

225

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

239

226

self.value = value

240

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

241

**kwargs)

242

227

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

228

def __unicode__(self):

229

return unicode(repr(self.value))

243

230

244

231

class AvahiServiceError(AvahiError):

245

232

pass

246

233

247

248

234

class AvahiGroupError(AvahiError):

249

235

pass

250

236

270

256

bus: dbus.SystemBus()

271

257

"""

272

258

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):

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):

284

263

self.interface = interface

285

264

self.name = name

286

265

self.type = servicetype

296

275

self.bus = bus

297

276

self.entry_group_state_changed_match = None

298

277

299

def rename(self, remove=True):

278

def rename(self):

300

279

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

301

280

if self.rename_count >= self.max_renames:

302

281

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

303

282

" after %i retries, exiting.",

304

283

self.rename_count)

305

284

raise AvahiServiceError("Too many renames")

306

self.name = str(

307

self.server.GetAlternativeServiceName(self.name))

308

self.rename_count += 1

285

self.name = unicode(self.server

286

.GetAlternativeServiceName(self.name))

309

287

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

310

288

self.name)

311

if remove:

312

self.remove()

289

self.remove()

313

290

try:

314

291

self.add()

315

292

except dbus.exceptions.DBusException as error:

316

if (error.get_dbus_name()

317

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

318

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

319

return self.rename(remove=False)

320

else:

321

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

322

self.cleanup()

323

os._exit(1)

293

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

294

self.cleanup()

295

os._exit(1)

296

self.rename_count += 1

324

297

325

298

def remove(self):

326

299

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

364

337

self.rename()

365

338

elif state == avahi.ENTRY_GROUP_FAILURE:

366

339

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

367

str(error))

368

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

340

unicode(error))

341

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

342

.format(error))

369

343

370

344

def cleanup(self):

371

345

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

381

355

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

382

356

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

383

357

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

384

bad_states = {

385

avahi.SERVER_INVALID: "Zeroconf server invalid",

386

avahi.SERVER_REGISTERING: None,

387

avahi.SERVER_COLLISION: "Zeroconf server name collision",

388

avahi.SERVER_FAILURE: "Zeroconf server failure",

389

}

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" }

390

365

if state in bad_states:

391

366

if bad_states[state] is not None:

392

367

if error is None:

395

370

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

396

371

self.cleanup()

397

372

elif state == avahi.SERVER_RUNNING:

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)

373

self.add()

410

374

else:

411

375

if error is None:

412

376

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

422

386

follow_name_owner_changes=True),

423

387

avahi.DBUS_INTERFACE_SERVER)

424

388

self.server.connect_to_signal("StateChanged",

425

self.server_state_changed)

389

self.server_state_changed)

426

390

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

427

391

428

392

429

393

class AvahiServiceToSyslog(AvahiService):

430

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

394

def rename(self):

431

395

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

432

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

433

syslogger.setFormatter(logging.Formatter(

434

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

435

.format(self.name)))

396

ret = AvahiService.rename(self)

397

syslogger.setFormatter(logging.Formatter

398

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

399

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

400

.format(self.name)))

436

401

return ret

437

402

438

def call_pipe(connection, # : multiprocessing.Connection

439

func, *args, **kwargs):

440

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

441

442

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

443

return value on the provided multiprocessing.Connection.

444

"""

445

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

446

connection.close()

403

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

447

410

448

411

class Client(object):

449

412

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

476

439

last_checker_status: integer between 0 and 255 reflecting exit

477

440

status of last checker. -1 reflects crashed

478

441

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

481

442

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

482

443

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

483

444

D-Bus identifiers

496

457

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

497

458

"last_approval_request", "last_checked_ok",

498

459

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

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

}

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)

510

485

511

486

@staticmethod

512

487

def config_parser(config):

528

503

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

529

504

"enabled")

530

505

531

# Uppercase and remove spaces from fingerprint for later

532

# comparison purposes with return value from the

533

# fingerprint() function

534

506

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

535

507

.replace(" ", ""))

536

508

if "secret" in section:

541

513

"rb") as secfile:

542

514

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

543

515

else:

544

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

516

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

545

517

.format(section))

546

518

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

547

519

client["extended_timeout"] = string_to_delta(

564

536

server_settings = {}

565

537

self.server_settings = server_settings

566

538

# adding all client settings

567

for setting, value in settings.items():

539

for setting, value in settings.iteritems():

568

540

setattr(self, setting, value)

569

541

570

542

if self.enabled:

578

550

self.expires = None

579

551

580

552

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

581

556

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

582

557

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

583

558

datetime.datetime.utcnow())

590

565

self.current_checker_command = None

591

566

self.approved = None

592

567

self.approvals_pending = 0

593

self.changedstate = multiprocessing_manager.Condition(

594

multiprocessing_manager.Lock())

595

self.client_structure = [attr

596

for attr in self.__dict__.iterkeys()

568

self.changedstate = (multiprocessing_manager

569

.Condition(multiprocessing_manager

570

.Lock()))

571

self.client_structure = [attr for attr in

572

self.__dict__.iterkeys()

597

573

if not attr.startswith("_")]

598

574

self.client_structure.append("client_structure")

599

575

600

for name, t in inspect.getmembers(

601

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

576

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

577

lambda obj:

578

isinstance(obj,

579

property)):

602

580

if not name.startswith("_"):

603

581

self.client_structure.append(name)

604

582

646

624

# and every interval from then on.

647

625

if self.checker_initiator_tag is not None:

648

626

gobject.source_remove(self.checker_initiator_tag)

649

self.checker_initiator_tag = gobject.timeout_add(

650

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

651

self.start_checker)

627

self.checker_initiator_tag = (gobject.timeout_add

628

(self.interval_milliseconds(),

629

self.start_checker))

652

630

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

653

631

if self.disable_initiator_tag is not None:

654

632

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = gobject.timeout_add(

656

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

633

self.disable_initiator_tag = (gobject.timeout_add

634

(self.timeout_milliseconds(),

635

self.disable))

657

636

# Also start a new checker *right now*.

658

637

self.start_checker()

659

638

660

def checker_callback(self, source, condition, connection,

661

command):

639

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

662

640

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

663

641

self.checker_callback_tag = None

664

642

self.checker = None

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

643

if os.WIFEXITED(condition):

644

self.last_checker_status = os.WEXITSTATUS(condition)

672

645

if self.last_checker_status == 0:

673

646

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

674

647

vars(self))

675

648

self.checked_ok()

676

649

else:

677

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

650

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

651

vars(self))

678

652

else:

679

653

self.last_checker_status = -1

680

self.last_checker_signal = -returncode

681

654

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

682

655

vars(self))

683

return False

684

656

685

657

def checked_ok(self):

686

658

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

687

659

self.last_checked_ok = datetime.datetime.utcnow()

688

660

self.last_checker_status = 0

689

self.last_checker_signal = None

690

661

self.bump_timeout()

691

662

692

663

def bump_timeout(self, timeout=None):

697

668

gobject.source_remove(self.disable_initiator_tag)

698

669

self.disable_initiator_tag = None

699

670

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

700

self.disable_initiator_tag = gobject.timeout_add(

701

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

671

self.disable_initiator_tag = (gobject.timeout_add

672

(timedelta_to_milliseconds

673

(timeout), self.disable))

702

674

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

703

675

704

676

def need_approval(self):

718

690

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

719

691

# should be.

720

692

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

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)

725

707

# Start a new checker if needed

726

708

if self.checker is None:

727

709

# Escape attributes for the shell

728

escaped_attrs = {

729

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

730

for attr in self.runtime_expansions }

710

escaped_attrs = dict(

711

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

712

for attr in

713

self.runtime_expansions)

731

714

try:

732

715

command = self.checker_command % escaped_attrs

733

716

except TypeError as error:

734

717

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

735

self.checker_command,

718

self.checker_command, exc_info=error)

719

return True # Try again later

720

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",

736

742

exc_info=error)

737

return True # Try again later

738

self.current_checker_command = 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)

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)

764

762

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

765

763

return True

766

764

772

770

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

773

771

return

774

772

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

775

self.checker.terminate()

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

776

781

self.checker = None

777

782

778

783

779

def dbus_service_property(dbus_interface,

780

signature="v",

781

access="readwrite",

782

byte_arrays=False):

784

def dbus_service_property(dbus_interface, signature="v",

785

access="readwrite", byte_arrays=False):

783

786

"""Decorators for marking methods of a DBusObjectWithProperties to

784

787

become properties on the D-Bus.

785

788

794

797

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

795

798

if byte_arrays and signature != "ay":

796

799

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

797

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

798

800

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

799

801

def decorator(func):

800

802

func._dbus_is_property = True

801

803

func._dbus_interface = dbus_interface

806

808

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

807

809

func._dbus_get_args_options = {'byte_arrays': byte_arrays }

808

810

return func

809

810

811

return decorator

811

812

813

821

822

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

822

823

"false"}

823

824

"""

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

830

return decorator

832

831

833

832

835

834

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

836

835

Usage:

837

836

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

841

837

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

842

838

access="r")

839

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

840

"org.freedesktop.DBus.Property."

841

"EmitsChangedSignal": "false"})

843

842

def Property_dbus_property(self):

844

843

return dbus.Boolean(False)

845

844

"""

846

847

845

def decorator(func):

848

846

func._dbus_annotations = annotations

849

847

return func

850

851

848

return decorator

852

849

853

850

854

851

class DBusPropertyException(dbus.exceptions.DBusException):

855

852

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

856

853

"""

857

pass

854

def __unicode__(self):

855

return unicode(str(self))

858

856

859

857

860

858

class DBusPropertyAccessException(DBusPropertyException):

884

882

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

885

883

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

886

884

"""

887

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

885

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

888

886

False)

889

887

890

888

def _get_all_dbus_things(self, thing):

891

889

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

892

890

"""

893

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

891

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

892

name),

894

893

athing.__get__(self))

895

894

for cls in self.__class__.__mro__

896

895

for name, athing in

897

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

896

inspect.getmembers(cls,

897

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, self._is_dbus_thing("property")):

903

for cls in self.__class__.__mro__:

904

for name, value in (inspect.getmembers

905

(cls,

906

self._is_dbus_thing("property"))):

906

907

if (value._dbus_name == property_name

907

908

and value._dbus_interface == interface_name):

908

909

return value.__get__(self)

909

910

911

# No such property

911

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

912

self.dbus_object_path, interface_name, property_name))

912

raise DBusPropertyNotFound(self.dbus_object_path + ":"

913

+ interface_name + "."

914

+ property_name)

913

915

914

@dbus.service.method(dbus.PROPERTIES_IFACE,

915

in_signature="ss",

916

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

916

917

out_signature="v")

917

918

def Get(self, interface_name, property_name):

918

919

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

937

938

# signatures other than "ay".

938

939

if prop._dbus_signature != "ay":

939

940

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

940

"'ay' signature {!r}"

941

"'ay' signature {0!r}"

941

942

.format(prop._dbus_signature))

942

943

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

943

944

for byte in value))

944

945

prop(value)

945

946

@dbus.service.method(dbus.PROPERTIES_IFACE,

947

in_signature="s",

947

@dbus.service.method(dbus.PROPERTIES_IFACE, 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)(

969

value, variant_level = value.variant_level + 1)

968

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

969

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

980

972

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

981

973

out_signature="s",

982

974

path_keyword='object_path',

990

982

connection)

991

983

try:

992

984

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

993

994

985

def make_tag(document, name, prop):

995

986

e = document.createElement("property")

996

987

e.setAttribute("name", name)

997

988

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

998

989

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

999

990

return e

1000

1001

991

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

1002

992

# Add property tags

1003

993

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

1015

1005

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

1016

1006

and prop._dbus_interface

1017

1007

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

1018

annots.update(getattr(

1019

prop, "_dbus_annotations", {}))

1020

for name, value in annots.items():

1008

annots.update(getattr

1009

(prop,

1010

"_dbus_annotations",

1011

{}))

1012

for name, value in annots.iteritems():

1021

1013

ann_tag = document.createElement(

1022

1014

"annotation")

1023

1015

ann_tag.setAttribute("name", name)

1026

1018

# Add interface annotation tags

1027

1019

for annotation, value in dict(

1028

1020

itertools.chain.from_iterable(

1029

annotations().items()

1030

for name, annotations

1031

in self._get_all_dbus_things("interface")

1021

annotations().iteritems()

1022

for name, annotations in

1023

self._get_all_dbus_things("interface")

1032

1024

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

1033

)).items():

1025

)).iteritems():

1034

1026

ann_tag = document.createElement("annotation")

1035

1027

ann_tag.setAttribute("name", annotation)

1036

1028

ann_tag.setAttribute("value", value)

1063

1055

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

1064

1056

if dt is None:

1065

1057

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

1066

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

1058

return dbus.String(dt.isoformat(),

1059

variant_level=variant_level)

1067

1060

1068

1061

1069

1062

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1089

1082

(from DBusObjectWithProperties) and interfaces (from the

1090

1083

dbus_interface_annotations decorator).

1091

1084

"""

1092

1093

1085

def wrapper(cls):

1094

1086

for orig_interface_name, alt_interface_name in (

1095

alt_interface_names.items()):

1087

alt_interface_names.iteritems()):

1096

1088

attr = {}

1097

1089

interface_names = set()

1098

1090

# Go though all attributes of the class

1100

1092

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

1101

1093

# with the wrong interface name

1102

1094

if (not hasattr(attribute, "_dbus_interface")

1103

or not attribute._dbus_interface.startswith(

1104

orig_interface_name)):

1095

or not attribute._dbus_interface

1096

.startswith(orig_interface_name)):

1105

1097

continue

1106

1098

# Create an alternate D-Bus interface name based on

1107

1099

# the current name

1108

alt_interface = attribute._dbus_interface.replace(

1109

orig_interface_name, alt_interface_name)

1100

alt_interface = (attribute._dbus_interface

1101

.replace(orig_interface_name,

1102

alt_interface_name))

1110

1103

interface_names.add(alt_interface)

1111

1104

# Is this a D-Bus signal?

1112

1105

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

1113

if sys.version_info.major == 2:

1114

# Extract the original non-method undecorated

1115

# function by black magic

1116

nonmethod_func = (dict(

1106

# Extract the original non-method undecorated

1107

# function by black magic

1108

nonmethod_func = (dict(

1117

1109

zip(attribute.func_code.co_freevars,

1118

attribute.__closure__))

1119

["func"].cell_contents)

1120

else:

1121

nonmethod_func = attribute

1110

attribute.__closure__))["func"]

1111

.cell_contents)

1122

1112

# Create a new, but exactly alike, function

1123

1113

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

1124

1114

# with the alternate D-Bus interface name

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))

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)))

1142

1124

# Copy annotations, if any

1143

1125

try:

1144

new_function._dbus_annotations = dict(

1145

attribute._dbus_annotations)

1126

new_function._dbus_annotations = (

1127

dict(attribute._dbus_annotations))

1146

1128

except AttributeError:

1147

1129

pass

1148

1130

# Define a creator of a function to call both the

1153

1135

"""This function is a scope container to pass

1154

1136

func1 and func2 to the "call_both" function

1155

1137

outside of its arguments"""

1156

1157

1138

def call_both(*args, **kwargs):

1158

1139

"""This function will emit two D-Bus

1159

1140

signals by calling func1 and func2"""

1160

1141

func1(*args, **kwargs)

1161

1142

func2(*args, **kwargs)

1162

1163

1143

return call_both

1164

1144

# Create the "call_both" function and add it to

1165

1145

# the class

1170

1150

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

1171

1151

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

1172

1152

# to the class.

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)))

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)))

1183

1163

# Copy annotations, if any

1184

1164

try:

1185

attr[attrname]._dbus_annotations = dict(

1186

attribute._dbus_annotations)

1165

attr[attrname]._dbus_annotations = (

1166

dict(attribute._dbus_annotations))

1187

1167

except AttributeError:

1188

1168

pass

1189

1169

# Is this a D-Bus property?

1192

1172

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

1193

1173

# property with the alternate D-Bus interface

1194

1174

# name. Add it to the class.

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)))

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)))

1206

1188

# Copy annotations, if any

1207

1189

try:

1208

attr[attrname]._dbus_annotations = dict(

1209

attribute._dbus_annotations)

1190

attr[attrname]._dbus_annotations = (

1191

dict(attribute._dbus_annotations))

1210

1192

except AttributeError:

1211

1193

pass

1212

1194

# Is this a D-Bus interface?

1215

1197

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

1216

1198

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

1217

1199

# to the class.

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)))

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)))

1225

1208

if deprecate:

1226

1209

# Deprecate all alternate interfaces

1227

iname="_AlternateDBusNames_interface_annotation{}"

1210

iname="_AlternateDBusNames_interface_annotation{0}"

1228

1211

for interface_name in interface_names:

1229

1230

1212

@dbus_interface_annotations(interface_name)

1231

1213

def func(self):

1232

1214

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

1233

"true" }

1215

"true" }

1234

1216

# Find an unused name

1235

1217

for aname in (iname.format(i)

1236

1218

for i in itertools.count()):

1240

1222

if interface_names:

1241

1223

# Replace the class with a new subclass of it with

1242

1224

# methods, signals, etc. as created above.

1243

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

1244

(cls, ), attr)

1225

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

1226

(cls,), attr)

1245

1227

return cls

1246

1247

1228

return wrapper

1248

1229

1249

1230

1250

1231

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

1251

"se.bsnet.fukt.Mandos"})

1232

"se.bsnet.fukt.Mandos"})

1252

1233

class ClientDBus(Client, DBusObjectWithProperties):

1253

1234

"""A Client class using D-Bus

1254

1235

1258

1239

"""

1259

1240

1260

1241

runtime_expansions = (Client.runtime_expansions

1261

+ ("dbus_object_path", ))

1262

1263

_interface = "se.recompile.Mandos.Client"

1242

+ ("dbus_object_path",))

1264

1243

1265

1244

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

1266

1245

1269

1248

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

1270

1249

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

1271

1250

# the D-Bus

1272

client_object_name = str(self.name).translate(

1251

client_object_name = unicode(self.name).translate(

1273

1252

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

1274

1253

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

1275

self.dbus_object_path = dbus.ObjectPath(

1276

"/clients/" + client_object_name)

1254

self.dbus_object_path = (dbus.ObjectPath

1255

("/clients/" + client_object_name))

1277

1256

DBusObjectWithProperties.__init__(self, self.bus,

1278

1257

self.dbus_object_path)

1279

1258

1280

def notifychangeproperty(transform_func, dbus_name,

1281

type_func=lambda x: x,

1282

variant_level=1,

1283

invalidate_only=False,

1284

_interface=_interface):

1259

def notifychangeproperty(transform_func,

1260

dbus_name, type_func=lambda x: x,

1261

variant_level=1):

1285

1262

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

1286

1263

its changes to DBus.

1287

1264

1292

1269

to the D-Bus. Default: no transform

1293

1270

variant_level: D-Bus variant level. Default: 1

1294

1271

"""

1295

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

1296

1272

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

1297

1273

def setter(self, value):

1298

1274

if hasattr(self, "dbus_object_path"):

1299

1275

if (not hasattr(self, attrname) or

1300

1276

type_func(getattr(self, attrname, None))

1301

1277

!= type_func(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())

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1317

1283

setattr(self, attrname, value)

1318

1284

1319

1285

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

1325

1291

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

1326

1292

last_enabled = notifychangeproperty(datetime_to_dbus,

1327

1293

"LastEnabled")

1328

checker = notifychangeproperty(

1329

dbus.Boolean, "CheckerRunning",

1330

type_func = lambda checker: checker is not None)

1294

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

1295

type_func = lambda checker:

1296

checker is not None)

1331

1297

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1332

1298

"LastCheckedOK")

1333

1299

last_checker_status = notifychangeproperty(dbus.Int16,

1336

1302

datetime_to_dbus, "LastApprovalRequest")

1337

1303

approved_by_default = notifychangeproperty(dbus.Boolean,

1338

1304

"ApprovedByDefault")

1339

approval_delay = notifychangeproperty(

1340

dbus.UInt64, "ApprovalDelay",

1341

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

1305

approval_delay = notifychangeproperty(dbus.UInt64,

1306

"ApprovalDelay",

1307

type_func =

1308

timedelta_to_milliseconds)

1342

1309

approval_duration = notifychangeproperty(

1343

1310

dbus.UInt64, "ApprovalDuration",

1344

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

1311

type_func = timedelta_to_milliseconds)

1345

1312

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

1346

timeout = notifychangeproperty(

1347

dbus.UInt64, "Timeout",

1348

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

1313

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

1314

type_func =

1315

timedelta_to_milliseconds)

1349

1316

extended_timeout = notifychangeproperty(

1350

1317

dbus.UInt64, "ExtendedTimeout",

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)

1318

type_func = timedelta_to_milliseconds)

1319

interval = notifychangeproperty(dbus.UInt64,

1320

"Interval",

1321

type_func =

1322

timedelta_to_milliseconds)

1355

1323

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

1356

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

1357

invalidate_only=True)

1358

1324

1359

1325

del notifychangeproperty

1360

1326

1367

1333

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

1368

1334

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

1369

1335

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:

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)

1377

1342

# Emit D-Bus signal

1378

1343

self.CheckerCompleted(dbus.Int16(exitstatus),

1379

dbus.Int64(0),

1344

dbus.Int64(condition),

1380

1345

dbus.String(command))

1381

1346

else:

1382

1347

# Emit D-Bus signal

1383

1348

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

1384

dbus.Int64(

1385

self.last_checker_signal),

1349

dbus.Int64(condition),

1386

1350

dbus.String(command))

1387

return ret

1351

1352

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

1353

*args, **kwargs)

1388

1354

1389

1355

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

1390

1356

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

1402

1368

1403

1369

def approve(self, value=True):

1404

1370

self.approved = value

1405

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

1406

* 1000), self._reset_approved)

1371

gobject.timeout_add(timedelta_to_milliseconds

1372

(self.approval_duration),

1373

self._reset_approved)

1407

1374

self.send_changedstate()

1408

1375

1409

1376

## D-Bus methods, signals & properties

1377

_interface = "se.recompile.Mandos.Client"

1410

1378

1411

1379

## Interfaces

1412

1380

1381

@dbus_interface_annotations(_interface)

1382

def _foo(self):

1383

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

1384

"false"}

1385

1413

1386

## Signals

1414

1387

1415

1388

# CheckerCompleted - signal

1425

1398

pass

1426

1399

1427

1400

# PropertyChanged - signal

1428

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

1429

1401

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

1430

1402

def PropertyChanged(self, property, value):

1431

1403

"D-Bus signal"

1495

1467

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

1496

1468

1497

1469

# ApprovedByDefault - property

1498

@dbus_service_property(_interface,

1499

signature="b",

1470

@dbus_service_property(_interface, signature="b",

1500

1471

access="readwrite")

1501

1472

def ApprovedByDefault_dbus_property(self, value=None):

1502

1473

if value is None: # get

1504

1475

self.approved_by_default = bool(value)

1505

1476

1506

1477

# ApprovalDelay - property

1507

@dbus_service_property(_interface,

1508

signature="t",

1478

@dbus_service_property(_interface, signature="t",

1509

1479

access="readwrite")

1510

1480

def ApprovalDelay_dbus_property(self, value=None):

1511

1481

if value is None: # get

1512

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

1513

* 1000)

1482

return dbus.UInt64(self.approval_delay_milliseconds())

1514

1483

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

1515

1484

1516

1485

# ApprovalDuration - property

1517

@dbus_service_property(_interface,

1518

signature="t",

1486

@dbus_service_property(_interface, signature="t",

1519

1487

access="readwrite")

1520

1488

def ApprovalDuration_dbus_property(self, value=None):

1521

1489

if value is None: # get

1522

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

1523

* 1000)

1490

return dbus.UInt64(timedelta_to_milliseconds(

1491

self.approval_duration))

1524

1492

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

1525

1493

1526

1494

# Name - property

1534

1502

return dbus.String(self.fingerprint)

1535

1503

1536

1504

# Host - property

1537

@dbus_service_property(_interface,

1538

signature="s",

1505

@dbus_service_property(_interface, signature="s",

1539

1506

access="readwrite")

1540

1507

def Host_dbus_property(self, value=None):

1541

1508

if value is None: # get

1542

1509

return dbus.String(self.host)

1543

self.host = str(value)

1510

self.host = unicode(value)

1544

1511

1545

1512

# Created - property

1546

1513

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

1553

1520

return datetime_to_dbus(self.last_enabled)

1554

1521

1555

1522

# Enabled - property

1556

@dbus_service_property(_interface,

1557

signature="b",

1523

@dbus_service_property(_interface, signature="b",

1558

1524

access="readwrite")

1559

1525

def Enabled_dbus_property(self, value=None):

1560

1526

if value is None: # get

1565

1531

self.disable()

1566

1532

1567

1533

# LastCheckedOK - property

1568

@dbus_service_property(_interface,

1569

signature="s",

1534

@dbus_service_property(_interface, signature="s",

1570

1535

access="readwrite")

1571

1536

def LastCheckedOK_dbus_property(self, value=None):

1572

1537

if value is not None:

1575

1540

return datetime_to_dbus(self.last_checked_ok)

1576

1541

1577

1542

# LastCheckerStatus - property

1578

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

1543

@dbus_service_property(_interface, signature="n",

1544

access="read")

1579

1545

def LastCheckerStatus_dbus_property(self):

1580

1546

return dbus.Int16(self.last_checker_status)

1581

1547

1590

1556

return datetime_to_dbus(self.last_approval_request)

1591

1557

1592

1558

# Timeout - property

1593

@dbus_service_property(_interface,

1594

signature="t",

1559

@dbus_service_property(_interface, signature="t",

1595

1560

access="readwrite")

1596

1561

def Timeout_dbus_property(self, value=None):

1597

1562

if value is None: # get

1598

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

1563

return dbus.UInt64(self.timeout_milliseconds())

1599

1564

old_timeout = self.timeout

1600

1565

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

1601

1566

# Reschedule disabling

1610

1575

is None):

1611

1576

return

1612

1577

gobject.source_remove(self.disable_initiator_tag)

1613

self.disable_initiator_tag = gobject.timeout_add(

1614

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

1615

self.disable)

1578

self.disable_initiator_tag = (

1579

gobject.timeout_add(

1580

timedelta_to_milliseconds(self.expires - now),

1581

self.disable))

1616

1582

1617

1583

# ExtendedTimeout - property

1618

@dbus_service_property(_interface,

1619

signature="t",

1584

@dbus_service_property(_interface, signature="t",

1620

1585

access="readwrite")

1621

1586

def ExtendedTimeout_dbus_property(self, value=None):

1622

1587

if value is None: # get

1623

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

1624

* 1000)

1588

return dbus.UInt64(self.extended_timeout_milliseconds())

1625

1589

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

1626

1590

1627

1591

# Interval - property

1628

@dbus_service_property(_interface,

1629

signature="t",

1592

@dbus_service_property(_interface, signature="t",

1630

1593

access="readwrite")

1631

1594

def Interval_dbus_property(self, value=None):

1632

1595

if value is None: # get

1633

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

1596

return dbus.UInt64(self.interval_milliseconds())

1634

1597

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

1635

1598

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

1636

1599

return

1637

1600

if self.enabled:

1638

1601

# Reschedule checker run

1639

1602

gobject.source_remove(self.checker_initiator_tag)

1640

self.checker_initiator_tag = gobject.timeout_add(

1641

value, self.start_checker)

1642

self.start_checker() # Start one now, too

1603

self.checker_initiator_tag = (gobject.timeout_add

1604

(value, self.start_checker))

1605

self.start_checker() # Start one now, too

1643

1606

1644

1607

# Checker - property

1645

@dbus_service_property(_interface,

1646

signature="s",

1608

@dbus_service_property(_interface, signature="s",

1647

1609

access="readwrite")

1648

1610

def Checker_dbus_property(self, value=None):

1649

1611

if value is None: # get

1650

1612

return dbus.String(self.checker_command)

1651

self.checker_command = str(value)

1613

self.checker_command = unicode(value)

1652

1614

1653

1615

# CheckerRunning - property

1654

@dbus_service_property(_interface,

1655

signature="b",

1616

@dbus_service_property(_interface, signature="b",

1656

1617

access="readwrite")

1657

1618

def CheckerRunning_dbus_property(self, value=None):

1658

1619

if value is None: # get

1668

1629

return self.dbus_object_path # is already a dbus.ObjectPath

1669

1630

1670

1631

# Secret = property

1671

@dbus_service_property(_interface,

1672

signature="ay",

1673

access="write",

1674

byte_arrays=True)

1632

@dbus_service_property(_interface, signature="ay",

1633

access="write", byte_arrays=True)

1675

1634

def Secret_dbus_property(self, value):

1676

self.secret = bytes(value)

1635

self.secret = str(value)

1677

1636

1678

1637

del _interface

1679

1638

1683

1642

self._pipe = child_pipe

1684

1643

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

1685

1644

if not self._pipe.recv():

1686

raise KeyError(fpr)

1645

raise KeyError()

1687

1646

1688

1647

def __getattribute__(self, name):

1689

1648

if name == '_pipe':

1693

1652

if data[0] == 'data':

1694

1653

return data[1]

1695

1654

if data[0] == 'function':

1696

1697

1655

def func(*args, **kwargs):

1698

1656

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

1699

1657

return self._pipe.recv()[1]

1700

1701

1658

return func

1702

1659

1703

1660

def __setattr__(self, name, value):

1715

1672

def handle(self):

1716

1673

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

1717

1674

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

1718

str(self.client_address))

1675

unicode(self.client_address))

1719

1676

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

1720

1677

self.server.child_pipe.fileno())

1721

1678

1722

session = gnutls.connection.ClientSession(

1723

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

1679

session = (gnutls.connection

1680

.ClientSession(self.request,

1681

gnutls.connection

1682

.X509Credentials()))

1724

1683

1725

1684

# Note: gnutls.connection.X509Credentials is really a

1726

1685

# generic GnuTLS certificate credentials object so long as

1735

1694

priority = self.server.gnutls_priority

1736

1695

if priority is None:

1737

1696

priority = "NORMAL"

1738

gnutls.library.functions.gnutls_priority_set_direct(

1739

session._c_object, priority, None)

1697

(gnutls.library.functions

1698

.gnutls_priority_set_direct(session._c_object,

1699

priority, None))

1740

1700

1741

1701

# Start communication using the Mandos protocol

1742

1702

# Get protocol number

1762

1722

approval_required = False

1763

1723

try:

1764

1724

try:

1765

fpr = self.fingerprint(

1766

self.peer_certificate(session))

1725

fpr = self.fingerprint(self.peer_certificate

1726

(session))

1767

1727

except (TypeError,

1768

1728

gnutls.errors.GNUTLSError) as error:

1769

1729

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

1784

1744

while True:

1785

1745

if not client.enabled:

1786

1746

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

1787

client.name)

1747

client.name)

1788

1748

if self.server.use_dbus:

1789

1749

# Emit D-Bus signal

1790

1750

client.Rejected("Disabled")

1799

1759

if self.server.use_dbus:

1800

1760

# Emit D-Bus signal

1801

1761

client.NeedApproval(

1802

client.approval_delay.total_seconds()

1803

* 1000, client.approved_by_default)

1762

client.approval_delay_milliseconds(),

1763

client.approved_by_default)

1804

1764

else:

1805

1765

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

1806

1766

client.name)

1812

1772

#wait until timeout or approved

1813

1773

time = datetime.datetime.now()

1814

1774

client.changedstate.acquire()

1815

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

1775

client.changedstate.wait(

1776

float(timedelta_to_milliseconds(delay)

1777

/ 1000))

1816

1778

client.changedstate.release()

1817

1779

time2 = datetime.datetime.now()

1818

1780

if (time2 - time) >= delay:

1837

1799

logger.warning("gnutls send failed",

1838

1800

exc_info=error)

1839

1801

return

1840

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

1841

len(client.secret) - (sent_size

1842

+ sent))

1802

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

1803

sent, len(client.secret)

1804

- (sent_size + sent))

1843

1805

sent_size += sent

1844

1806

1845

1807

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

1862

1824

def peer_certificate(session):

1863

1825

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

1864

1826

# If not an OpenPGP certificate...

1865

if (gnutls.library.functions.gnutls_certificate_type_get(

1866

session._c_object)

1827

if (gnutls.library.functions

1828

.gnutls_certificate_type_get(session._c_object)

1867

1829

!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):

1868

1830

# ...do the normal thing

1869

1831

return session.peer_certificate

1883

1845

def fingerprint(openpgp):

1884

1846

"Convert an OpenPGP bytestring to a hexdigit fingerprint"

1885

1847

# New GnuTLS "datum" with the OpenPGP public key

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)))

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))))

1890

1853

# New empty GnuTLS certificate

1891

1854

crt = gnutls.library.types.gnutls_openpgp_crt_t()

1892

gnutls.library.functions.gnutls_openpgp_crt_init(

1893

ctypes.byref(crt))

1855

(gnutls.library.functions

1856

.gnutls_openpgp_crt_init(ctypes.byref(crt)))

1894

1857

# Import the OpenPGP public key into the certificate

1895

gnutls.library.functions.gnutls_openpgp_crt_import(

1896

crt, ctypes.byref(datum),

1897

gnutls.library.constants.GNUTLS_OPENPGP_FMT_RAW)

1858

(gnutls.library.functions

1859

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

1860

gnutls.library.constants

1861

.GNUTLS_OPENPGP_FMT_RAW))

1898

1862

# Verify the self signature in the key

1899

1863

crtverify = ctypes.c_uint()

1900

gnutls.library.functions.gnutls_openpgp_crt_verify_self(

1901

crt, 0, ctypes.byref(crtverify))

1864

(gnutls.library.functions

1865

.gnutls_openpgp_crt_verify_self(crt, 0,

1866

ctypes.byref(crtverify)))

1902

1867

if crtverify.value != 0:

1903

1868

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1904

raise gnutls.errors.CertificateSecurityError(

1905

"Verify failed")

1869

raise (gnutls.errors.CertificateSecurityError

1870

("Verify failed"))

1906

1871

# New buffer for the fingerprint

1907

1872

buf = ctypes.create_string_buffer(20)

1908

1873

buf_len = ctypes.c_size_t()

1909

1874

# Get the fingerprint from the certificate into the buffer

1910

gnutls.library.functions.gnutls_openpgp_crt_get_fingerprint(

1911

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

1875

(gnutls.library.functions

1876

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

1877

ctypes.byref(buf_len)))

1912

1878

# Deinit the certificate

1913

1879

gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)

1914

1880

# Convert the buffer to a Python bytestring

1920

1886

1921

1887

class MultiprocessingMixIn(object):

1922

1888

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

1923

1924

1889

def sub_process_main(self, request, address):

1925

1890

try:

1926

1891

self.finish_request(request, address)

1938

1903

1939

1904

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1940

1905

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

1941

1942

1906

def process_request(self, request, client_address):

1943

1907

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

1944

1908

1965

1929

interface: None or a network interface name (string)

1966

1930

use_ipv6: Boolean; to use IPv6 or not

1967

1931

"""

1968

1969

1932

def __init__(self, server_address, RequestHandlerClass,

1970

interface=None,

1971

use_ipv6=True,

1972

socketfd=None):

1933

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

1973

1934

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

1974

1935

creating a new one with socket.socket().

1975

1936

"""

2016

1977

self.interface)

2017

1978

else:

2018

1979

try:

2019

self.socket.setsockopt(

2020

socket.SOL_SOCKET, SO_BINDTODEVICE,

2021

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

1980

self.socket.setsockopt(socket.SOL_SOCKET,

1981

SO_BINDTODEVICE,

1982

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

2022

1983

except socket.error as error:

2023

1984

if error.errno == errno.EPERM:

2024

1985

logger.error("No permission to bind to"

2042

2003

self.server_address = (any_address,

2043

2004

self.server_address[1])

2044

2005

elif not self.server_address[1]:

2045

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

2006

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

2007

0)

2046

2008

# if self.interface:

2047

2009

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

2048

2010

# 0, # port

2062

2024

2063

2025

Assumes a gobject.MainLoop event loop.

2064

2026

"""

2065

2066

2027

def __init__(self, server_address, RequestHandlerClass,

2067

interface=None,

2068

use_ipv6=True,

2069

clients=None,

2070

gnutls_priority=None,

2071

use_dbus=True,

2072

socketfd=None):

2028

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

2029

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

2073

2030

self.enabled = False

2074

2031

self.clients = clients

2075

2032

if self.clients is None:

2081

2038

interface = interface,

2082

2039

use_ipv6 = use_ipv6,

2083

2040

socketfd = socketfd)

2084

2085

2041

def server_activate(self):

2086

2042

if self.enabled:

2087

2043

return socketserver.TCPServer.server_activate(self)

2091

2047

2092

2048

def add_pipe(self, parent_pipe, proc):

2093

2049

# Call "handle_ipc" for both data and EOF events

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))

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))

2100

2056

2101

def handle_ipc(self, source, condition,

2102

parent_pipe=None,

2103

proc = None,

2104

client_object=None):

2057

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

2058

proc = None, client_object=None):

2105

2059

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

2106

2060

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

2107

2061

# Wait for other process to exit

2130

2084

parent_pipe.send(False)

2131

2085

return False

2132

2086

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))

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))

2140

2095

parent_pipe.send(True)

2141

2096

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

2142

2097

# same fileno

2148

2103

2149

2104

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

2150

2105

funcname)(*args,

2151

**kwargs)))

2106

**kwargs)))

2152

2107

2153

2108

if command == 'getattr':

2154

2109

attrname = request[1]

2155

if isinstance(client_object.__getattribute__(attrname),

2156

collections.Callable):

2157

parent_pipe.send(('function', ))

2110

if callable(client_object.__getattribute__(attrname)):

2111

parent_pipe.send(('function',))

2158

2112

else:

2159

parent_pipe.send((

2160

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

2113

parent_pipe.send(('data', client_object

2114

.__getattribute__(attrname)))

2161

2115

2162

2116

if command == 'setattr':

2163

2117

attrname = request[1]

2194

2148

# avoid excessive use of external libraries.

2195

2149

2196

2150

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

2197

Token = collections.namedtuple("Token", (

2198

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

2199

# a "group" containing digits

2200

"value", # datetime.timedelta or None

2201

"followers")) # Tokens valid after this token

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

2202

2160

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

2203

2161

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

2204

2162

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

2205

2163

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

2206

2164

datetime.timedelta(seconds=1),

2207

frozenset((token_end, )))

2165

frozenset((token_end,)))

2208

2166

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

2209

2167

datetime.timedelta(minutes=1),

2210

2168

frozenset((token_second, token_end)))

2226

2184

frozenset((token_month, token_end)))

2227

2185

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

2228

2186

datetime.timedelta(weeks=1),

2229

frozenset((token_end, )))

2187

frozenset((token_end,)))

2230

2188

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

2231

2189

frozenset((token_year, token_month,

2232

2190

token_day, token_time,

2233

token_week)))

2191

token_week))),

2234

2192

# Define starting values

2235

2193

value = datetime.timedelta() # Value so far

2236

2194

found_token = None

2237

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

2195

followers = frozenset(token_duration,) # Following valid tokens

2238

2196

s = duration # String left to parse

2239

2197

# Loop until end token is found

2240

2198

while found_token is not token_end:

2257

2215

break

2258

2216

else:

2259

2217

# No currently valid tokens were found

2260

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

2261

.format(duration))

2218

raise ValueError("Invalid RFC 3339 duration")

2262

2219

# End token found

2263

2220

return value

2264

2221

2288

2245

timevalue = datetime.timedelta(0)

2289

2246

for s in interval.split():

2290

2247

try:

2291

suffix = s[-1]

2248

suffix = unicode(s[-1])

2292

2249

value = int(s[:-1])

2293

2250

if suffix == "d":

2294

2251

delta = datetime.timedelta(value)

2301

2258

elif suffix == "w":

2302

2259

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

2303

2260

else:

2304

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

2261

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

2262

.format(suffix))

2305

2263

except IndexError as e:

2306

2264

raise ValueError(*(e.args))

2307

2265

timevalue += delta

2324

2282

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

2325

2283

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

2326

2284

raise OSError(errno.ENODEV,

2327

"{} not a character device"

2285

"{0} not a character device"

2328

2286

.format(os.devnull))

2329

2287

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

2330

2288

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

2340

2298

2341

2299

parser = argparse.ArgumentParser()

2342

2300

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

2343

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

2301

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

2344

2302

help="show version number and exit")

2345

2303

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

2346

2304

help="Bind to interface IF")

2396

2354

"port": "",

2397

2355

"debug": "False",

2398

2356

"priority":

2399

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

2400

":+SIGN-DSA-SHA256",

2357

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

2401

2358

"servicename": "Mandos",

2402

2359

"use_dbus": "True",

2403

2360

"use_ipv6": "True",

2407

2364

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

2408

2365

"foreground": "False",

2409

2366

"zeroconf": "True",

2410

}

2367

}

2411

2368

2412

2369

# Parse config file for server-global settings

2413

2370

server_config = configparser.SafeConfigParser(server_defaults)

2414

2371

del server_defaults

2415

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

2372

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

2373

"mandos.conf"))

2416

2374

# Convert the SafeConfigParser object to a dict

2417

2375

server_settings = server_config.defaults()

2418

2376

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

2436

2394

# Override the settings from the config file with command line

2437

2395

# options, if set.

2438

2396

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

2439

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

2440

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

2441

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

2397

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

2398

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

2399

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

2442

2400

value = getattr(options, option)

2443

2401

if value is not None:

2444

2402

server_settings[option] = value

2445

2403

del options

2446

2404

# Force all strings to be unicode

2447

2405

for option in server_settings.keys():

2448

if isinstance(server_settings[option], bytes):

2449

server_settings[option] = (server_settings[option]

2450

.decode("utf-8"))

2406

if type(server_settings[option]) is str:

2407

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

2451

2408

# Force all boolean options to be boolean

2452

2409

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

2453

2410

"foreground", "zeroconf"):

2459

2416

2460

2417

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

2461

2418

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")

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")

2466

2424

2467

2425

# For convenience

2468

2426

debug = server_settings["debug"]

2484

2442

initlogger(debug, level)

2485

2443

2486

2444

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

2487

syslogger.setFormatter(

2488

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

2489

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

2490

server_settings["servicename"])))

2445

syslogger.setFormatter(logging.Formatter

2446

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

2447

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

2448

.format(server_settings

2449

["servicename"])))

2491

2450

2492

2451

# Parse config file with clients

2493

2452

client_config = configparser.SafeConfigParser(Client

2501

2460

socketfd = None

2502

2461

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

2503

2462

socketfd = server_settings["socket"]

2504

tcp_server = MandosServer(

2505

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

2506

ClientHandler,

2507

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

2508

use_ipv6=use_ipv6,

2509

gnutls_priority=server_settings["priority"],

2510

use_dbus=use_dbus,

2511

socketfd=socketfd)

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)

2512

2473

if not foreground:

2513

2474

pidfilename = "/run/mandos.pid"

2514

2475

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

2515

2476

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

2516

2477

pidfile = None

2517

2478

try:

2518

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

2479

pidfile = open(pidfilename, "w")

2519

2480

except IOError as e:

2520

2481

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

2521

2482

exc_info=e)

2548

2509

def debug_gnutls(level, string):

2549

2510

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

2550

2511

2551

gnutls.library.functions.gnutls_global_set_log_function(

2552

debug_gnutls)

2512

(gnutls.library.functions

2513

.gnutls_global_set_log_function(debug_gnutls))

2553

2514

2554

2515

# Redirect stdin so all checkers get /dev/null

2555

2516

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

2575

2536

if use_dbus:

2576

2537

try:

2577

2538

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

2578

bus,

2579

do_not_queue=True)

2580

old_bus_name = dbus.service.BusName(

2581

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

2582

do_not_queue=True)

2583

except dbus.exceptions.DBusException as e:

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:

2584

2544

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

2585

2545

use_dbus = False

2586

2546

server_settings["use_dbus"] = False

2587

2547

tcp_server.use_dbus = False

2588

2548

if zeroconf:

2589

2549

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2590

service = AvahiServiceToSyslog(

2591

name = server_settings["servicename"],

2592

servicetype = "_mandos._tcp",

2593

protocol = protocol,

2594

bus = bus)

2550

service = AvahiServiceToSyslog(name =

2551

server_settings["servicename"],

2552

servicetype = "_mandos._tcp",

2553

protocol = protocol, bus = bus)

2595

2554

if server_settings["interface"]:

2596

service.interface = if_nametoindex(

2597

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

2555

service.interface = (if_nametoindex

2556

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

2598

2557

2599

2558

global multiprocessing_manager

2600

2559

multiprocessing_manager = multiprocessing.Manager()

2619

2578

if server_settings["restore"]:

2620

2579

try:

2621

2580

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

2622

clients_data, old_client_settings = pickle.load(

2623

stored_state)

2581

clients_data, old_client_settings = (pickle.load

2582

(stored_state))

2624

2583

os.remove(stored_state_path)

2625

2584

except IOError as e:

2626

2585

if e.errno == errno.ENOENT:

2627

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

2628

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

2586

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

2587

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

2629

2588

else:

2630

2589

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

2631

2590

exc_info=e)

2632

2591

raise

2633

2592

except EOFError as e:

2634

2593

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

2635

"EOFError:",

2636

exc_info=e)

2594

"EOFError:", exc_info=e)

2637

2595

2638

2596

with PGPEngine() as pgp:

2639

for client_name, client in clients_data.items():

2597

for client_name, client in clients_data.iteritems():

2640

2598

# Skip removed clients

2641

2599

if client_name not in client_settings:

2642

2600

continue

2651

2609

# For each value in new config, check if it

2652

2610

# differs from the old config value (Except for

2653

2611

# the "secret" attribute)

2654

if (name != "secret"

2655

and (value !=

2656

old_client_settings[client_name][name])):

2612

if (name != "secret" and

2613

value != old_client_settings[client_name]

2614

[name]):

2657

2615

client[name] = value

2658

2616

except KeyError:

2659

2617

pass

2660

2618

2661

2619

# Clients who has passed its expire date can still be

2662

# enabled if its last checker was successful. A Client

2620

# enabled if its last checker was successful. Clients

2663

2621

# whose checker succeeded before we stored its state is

2664

2622

# assumed to have successfully run all checkers during

2665

2623

# downtime.

2667

2625

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

2668

2626

if not client["last_checked_ok"]:

2669

2627

logger.warning(

2670

"disabling client {} - Client never "

2671

"performed a successful checker".format(

2672

client_name))

2628

"disabling client {0} - Client never "

2629

"performed a successful checker"

2630

.format(client_name))

2673

2631

client["enabled"] = False

2674

2632

elif client["last_checker_status"] != 0:

2675

2633

logger.warning(

2676

"disabling client {} - Client last"

2677

" checker failed with error code"

2678

" {}".format(

2679

client_name,

2680

client["last_checker_status"]))

2634

"disabling client {0} - Client "

2635

"last checker failed with error code {1}"

2636

.format(client_name,

2637

client["last_checker_status"]))

2681

2638

client["enabled"] = False

2682

2639

else:

2683

client["expires"] = (

2684

datetime.datetime.utcnow()

2685

+ client["timeout"])

2640

client["expires"] = (datetime.datetime

2641

.utcnow()

2642

+ client["timeout"])

2686

2643

logger.debug("Last checker succeeded,"

2687

" keeping {} enabled".format(

2688

client_name))

2644

" keeping {0} enabled"

2645

.format(client_name))

2689

2646

try:

2690

client["secret"] = pgp.decrypt(

2691

client["encrypted_secret"],

2692

client_settings[client_name]["secret"])

2647

client["secret"] = (

2648

pgp.decrypt(client["encrypted_secret"],

2649

client_settings[client_name]

2650

["secret"]))

2693

2651

except PGPError:

2694

2652

# If decryption fails, we use secret from new settings

2695

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

2696

client_name))

2697

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

2698

["secret"])

2653

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

2654

.format(client_name))

2655

client["secret"] = (

2656

client_settings[client_name]["secret"])

2699

2657

2700

2658

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

2701

2659

for client_name in (set(old_client_settings)

2706

2664

clients_data[client_name] = client_settings[client_name]

2707

2665

2708

2666

# Create all client objects

2709

for client_name, client in clients_data.items():

2667

for client_name, client in clients_data.iteritems():

2710

2668

tcp_server.clients[client_name] = client_class(

2711

name = client_name,

2712

settings = client,

2669

name = client_name, settings = client,

2713

2670

server_settings = server_settings)

2714

2671

2715

2672

if not tcp_server.clients:

2717

2674

2718

2675

if not foreground:

2719

2676

if pidfile is not None:

2720

pid = os.getpid()

2721

2677

try:

2722

2678

with pidfile:

2723

print(pid, file=pidfile)

2679

pid = os.getpid()

2680

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

2724

2681

except IOError:

2725

2682

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

2726

2683

pidfilename, pid)

2731

2688

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

2732

2689

2733

2690

if use_dbus:

2734

2735

@alternate_dbus_interfaces(

2736

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

2691

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

2692

"se.bsnet.fukt.Mandos"})

2737

2693

class MandosDBusService(DBusObjectWithProperties):

2738

2694

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

2739

2740

2695

def __init__(self):

2741

2696

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

2742

2743

2697

_interface = "se.recompile.Mandos"

2744

2698

2745

2699

@dbus_interface_annotations(_interface)

2746

2700

def _foo(self):

2747

return {

2748

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

2749

"false" }

2701

return { "org.freedesktop.DBus.Property"

2702

".EmitsChangedSignal":

2703

"false"}

2750

2704

2751

2705

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

2752

2706

def ClientAdded(self, objpath):

2766

2720

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

2767

2721

def GetAllClients(self):

2768

2722

"D-Bus method"

2769

return dbus.Array(c.dbus_object_path for c in

2723

return dbus.Array(c.dbus_object_path

2724

for c in

2770

2725

tcp_server.clients.itervalues())

2771

2726

2772

2727

@dbus.service.method(_interface,

2774

2729

def GetAllClientsWithProperties(self):

2775

2730

"D-Bus method"

2776

2731

return dbus.Dictionary(

2777

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

2778

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

2732

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

2733

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

2779

2734

signature="oa{sv}")

2780

2735

2781

2736

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

2819

2774

2820

2775

# A list of attributes that can not be pickled

2821

2776

# + secret.

2822

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

2823

"checker", "server_settings" }

2824

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

2825

.Object):

2777

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

2778

"checker", "server_settings"))

2779

for name, typ in (inspect.getmembers

2780

(dbus.service.Object)):

2826

2781

exclude.add(name)

2827

2782

2828

2783

client_dict["encrypted_secret"] = (client

2835

2790

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

2836

2791

2837

2792

try:

2838

with tempfile.NamedTemporaryFile(

2839

mode='wb',

2840

suffix=".pickle",

2841

prefix='clients-',

2842

dir=os.path.dirname(stored_state_path),

2843

delete=False) as stored_state:

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:

2844

2797

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

2845

tempname = stored_state.name

2798

tempname=stored_state.name

2846

2799

os.rename(tempname, stored_state_path)

2847

2800

except (IOError, OSError) as e:

2848

2801

if not debug:

2851

2804

except NameError:

2852

2805

pass

2853

2806

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

2854

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

2807

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

2855

2808

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

2856

2809

else:

2857

2810

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

2867

2820

client.disable(quiet=True)

2868

2821

if use_dbus:

2869

2822

# Emit D-Bus signal

2870

mandos_dbus_service.ClientRemoved(

2871

client.dbus_object_path, client.name)

2823

mandos_dbus_service.ClientRemoved(client

2824

.dbus_object_path,

2825

client.name)

2872

2826

client_settings.clear()

2873

2827

2874

2828

atexit.register(cleanup)

2927

2881

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

2928

2882

cleanup()

2929

2883

2930

2931

2884

if __name__ == '__main__':

2932

2885

main()