/mandos/release : revision 237.7.709

1

#!/usr/bin/python3 -bI

2

# -*- coding: utf-8; lexical-binding: t -*-

1

#!/usr/bin/python

2

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

3

#

4

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

5

#

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

# This file is part of Mandos.

18

#

31

#

32

# Contact the authors at <mandos@recompile.se>.

33

#

34

35

from __future__ import (division, absolute_import, print_function,

35

36

unicode_literals)

36

37

39

40

except ImportError:

40

41

pass

41

42

import sys

43

import unittest

44

import argparse

45

import logging

46

import os

47

43

try:

48

44

import SocketServer as socketserver

49

45

except ImportError:

50

46

import socketserver

51

47

import socket

48

import argparse

52

49

import datetime

53

50

import errno

54

51

try:

55

52

import ConfigParser as configparser

56

53

except ImportError:

57

54

import configparser

55

import sys

58

56

import re

57

import os

59

58

import signal

60

59

import subprocess

61

60

import atexit

62

61

import stat

62

import logging

63

import logging.handlers

64

import pwd

65

import contextlib

77

import itertools

78

import collections

79

import codecs

80

import random

81

import shlex

82

80

83

81

import dbus

84

82

import dbus.service

92

90

93

91

if sys.version_info.major == 2:

94

92

__metaclass__ = type

95

str = unicode

96

input = raw_input

97

98

# Add collections.abc.Callable if it does not exist

99

try:

100

collections.abc.Callable

101

except AttributeError:

102

class abc:

103

Callable = collections.Callable

104

collections.abc = abc

105

del abc

106

107

# Add shlex.quote if it does not exist

108

try:

109

shlex.quote

110

except AttributeError:

111

shlex.quote = re.escape

112

113

# Show warnings by default

114

if not sys.warnoptions:

115

import warnings

116

warnings.simplefilter("default")

117

93

118

94

# Try to find the value of SO_BINDTODEVICE:

119

95

try:

140

116

# No value found

141

117

SO_BINDTODEVICE = None

142

118

119

if sys.version_info.major == 2:

120

str = unicode

121

143

122

if sys.version_info < (3, 2):

144

123

configparser.Configparser = configparser.SafeConfigParser

145

124

146

version = "1.8.17"

125

version = "1.8.7"

147

126

stored_state_file = "clients.pickle"

148

127

149

log = logging.getLogger(os.path.basename(sys.argv[0]))

150

logging.captureWarnings(True) # Show warnings via the logging system

128

logger = logging.getLogger()

151

129

syslogger = None

152

130

153

131

try:

189

167

facility=logging.handlers.SysLogHandler.LOG_DAEMON,

190

168

address="/dev/log"))

191

169

syslogger.setFormatter(logging.Formatter

192

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

193

" %(message)s"))

194

log.addHandler(syslogger)

170

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

171

' %(message)s'))

172

logger.addHandler(syslogger)

195

173

196

174

if debug:

197

175

console = logging.StreamHandler()

198

console.setFormatter(logging.Formatter("%(asctime)s %(name)s"

199

" [%(process)d]:"

200

" %(levelname)s:"

201

" %(message)s"))

202

log.addHandler(console)

203

log.setLevel(level)

176

console.setFormatter(logging.Formatter('%(asctime)s %(name)s'

177

' [%(process)d]:'

178

' %(levelname)s:'

179

' %(message)s'))

180

logger.addHandler(console)

181

logger.setLevel(level)

204

182

205

183

206

184

class PGPError(Exception):

218

196

output = subprocess.check_output(["gpgconf"])

219

197

for line in output.splitlines():

220

198

name, text, path = line.split(b":")

221

if name == b"gpg":

199

if name == "gpg":

222

200

self.gpg = path

223

201

break

224

202

except OSError as e:

225

203

if e.errno != errno.ENOENT:

226

204

raise

227

self.gnupgargs = ["--batch",

228

"--homedir", self.tempdir,

229

"--force-mdc",

230

"--quiet"]

205

self.gnupgargs = ['--batch',

206

'--homedir', self.tempdir,

207

'--force-mdc',

208

'--quiet']

231

209

# Only GPG version 1 has the --no-use-agent option.

232

if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):

210

if self.gpg == "gpg" or self.gpg.endswith("/gpg"):

233

211

self.gnupgargs.append("--no-use-agent")

234

212

235

213

def __enter__(self):

272

250

dir=self.tempdir) as passfile:

273

251

passfile.write(passphrase)

274

252

passfile.flush()

275

proc = subprocess.Popen([self.gpg, "--symmetric",

276

"--passphrase-file",

253

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

254

'--passphrase-file',

277

255

passfile.name]

278

256

+ self.gnupgargs,

279

257

stdin=subprocess.PIPE,

290

268

dir=self.tempdir) as passfile:

291

269

passfile.write(passphrase)

292

270

passfile.flush()

293

proc = subprocess.Popen([self.gpg, "--decrypt",

294

"--passphrase-file",

271

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

272

'--passphrase-file',

295

273

passfile.name]

296

274

+ self.gnupgargs,

297

275

stdin=subprocess.PIPE,

350

328

Attributes:

351

329

interface: integer; avahi.IF_UNSPEC or an interface index.

352

330

Used to optionally bind to the specified interface.

353

name: string; Example: "Mandos"

354

type: string; Example: "_mandos._tcp".

331

name: string; Example: 'Mandos'

332

type: string; Example: '_mandos._tcp'.

355

333

See <https://www.iana.org/assignments/service-names-port-numbers>

356

334

port: integer; what port to announce

357

335

TXT: list of strings; TXT record for the service

394

372

def rename(self, remove=True):

395

373

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

396

374

if self.rename_count >= self.max_renames:

397

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

398

" after %i retries, exiting.",

399

self.rename_count)

375

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

376

" after %i retries, exiting.",

377

self.rename_count)

400

378

raise AvahiServiceError("Too many renames")

401

379

self.name = str(

402

380

self.server.GetAlternativeServiceName(self.name))

403

381

self.rename_count += 1

404

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

405

self.name)

382

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

383

self.name)

406

384

if remove:

407

385

self.remove()

408

386

try:

410

388

except dbus.exceptions.DBusException as error:

411

389

if (error.get_dbus_name()

412

390

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

413

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

391

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

414

392

return self.rename(remove=False)

415

393

else:

416

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

394

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

417

395

self.cleanup()

418

396

os._exit(1)

419

397

435

413

avahi.DBUS_INTERFACE_ENTRY_GROUP)

436

414

self.entry_group_state_changed_match = (

437

415

self.group.connect_to_signal(

438

"StateChanged", self.entry_group_state_changed))

439

log.debug("Adding Zeroconf service '%s' of type '%s' ...",

440

self.name, self.type)

416

'StateChanged', self.entry_group_state_changed))

417

logger.debug("Adding Zeroconf service '%s' of type '%s' ...",

418

self.name, self.type)

441

419

self.group.AddService(

442

420

self.interface,

443

421

self.protocol,

450

428

451

429

def entry_group_state_changed(self, state, error):

452

430

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

453

log.debug("Avahi entry group state change: %i", state)

431

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

454

432

455

433

if state == avahi.ENTRY_GROUP_ESTABLISHED:

456

log.debug("Zeroconf service established.")

434

logger.debug("Zeroconf service established.")

457

435

elif state == avahi.ENTRY_GROUP_COLLISION:

458

log.info("Zeroconf service name collision.")

436

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

459

437

self.rename()

460

438

elif state == avahi.ENTRY_GROUP_FAILURE:

461

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

462

str(error))

439

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

440

str(error))

463

441

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

464

442

465

443

def cleanup(self):

475

453

476

454

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

477

455

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

478

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

456

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

479

457

bad_states = {

480

458

avahi.SERVER_INVALID: "Zeroconf server invalid",

481

459

avahi.SERVER_REGISTERING: None,

485

463

if state in bad_states:

486

464

if bad_states[state] is not None:

487

465

if error is None:

488

log.error(bad_states[state])

466

logger.error(bad_states[state])

489

467

else:

490

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

468

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

491

469

self.cleanup()

492

470

elif state == avahi.SERVER_RUNNING:

493

471

try:

495

473

except dbus.exceptions.DBusException as error:

496

474

if (error.get_dbus_name()

497

475

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

498

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

476

logger.info("Local Zeroconf service name"

477

" collision.")

499

478

return self.rename(remove=False)

500

479

else:

501

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

480

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

502

481

self.cleanup()

503

482

os._exit(1)

504

483

else:

505

484

if error is None:

506

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

485

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

507

486

else:

508

log.debug("Unknown state: %r: %r", state, error)

487

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

509

488

510

489

def activate(self):

511

490

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

523

502

class AvahiServiceToSyslog(AvahiService):

524

503

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

525

504

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

526

ret = super(AvahiServiceToSyslog, self).rename(*args,

527

**kwargs)

505

ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)

528

506

syslogger.setFormatter(logging.Formatter(

529

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

507

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

530

508

.format(self.name)))

531

509

return ret

532

510

562

540

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

563

541

564

542

# Types

565

class _session_int(ctypes.Structure):

543

class session_int(ctypes.Structure):

566

544

_fields_ = []

567

session_t = ctypes.POINTER(_session_int)

545

session_t = ctypes.POINTER(session_int)

568

546

569

547

class certificate_credentials_st(ctypes.Structure):

570

548

_fields_ = []

573

551

certificate_type_t = ctypes.c_int

574

552

575

553

class datum_t(ctypes.Structure):

576

_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),

577

("size", ctypes.c_uint)]

554

_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),

555

('size', ctypes.c_uint)]

578

556

579

class _openpgp_crt_int(ctypes.Structure):

557

class openpgp_crt_int(ctypes.Structure):

580

558

_fields_ = []

581

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

559

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

582

560

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

583

561

log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)

584

562

credentials_type_t = ctypes.c_int

593

571

# gnutls.strerror()

594

572

self.code = code

595

573

if message is None and code is not None:

596

message = gnutls.strerror(code).decode(

597

"utf-8", errors="replace")

574

message = gnutls.strerror(code)

598

575

return super(gnutls.Error, self).__init__(

599

576

message, *args)

600

577

601

578

class CertificateSecurityError(Error):

602

579

pass

603

580

604

class PointerTo:

605

def __init__(self, cls):

606

self.cls = cls

607

608

def from_param(self, obj):

609

if not isinstance(obj, self.cls):

610

raise TypeError("Not of type {}: {!r}"

611

.format(self.cls.__name__, obj))

612

return ctypes.byref(obj.from_param(obj))

613

614

class CastToVoidPointer:

615

def __init__(self, cls):

616

self.cls = cls

617

618

def from_param(self, obj):

619

if not isinstance(obj, self.cls):

620

raise TypeError("Not of type {}: {!r}"

621

.format(self.cls.__name__, obj))

622

return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)

623

624

class With_from_param:

625

@classmethod

626

def from_param(cls, obj):

627

return obj._as_parameter_

628

629

581

# Classes

630

class Credentials(With_from_param):

582

class Credentials:

631

583

def __init__(self):

632

self._as_parameter_ = gnutls.certificate_credentials_t()

633

gnutls.certificate_allocate_credentials(self)

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

634

587

self.type = gnutls.CRD_CERTIFICATE

635

588

636

589

def __del__(self):

637

gnutls.certificate_free_credentials(self)

590

gnutls.certificate_free_credentials(self._c_object)

638

591

639

class ClientSession(With_from_param):

592

class ClientSession:

640

593

def __init__(self, socket, credentials=None):

641

self._as_parameter_ = gnutls.session_t()

594

self._c_object = gnutls.session_t()

642

595

gnutls_flags = gnutls.CLIENT

643

596

if gnutls.check_version(b"3.5.6"):

644

597

gnutls_flags |= gnutls.NO_TICKETS

645

598

if gnutls.has_rawpk:

646

599

gnutls_flags |= gnutls.ENABLE_RAWPK

647

gnutls.init(self, gnutls_flags)

600

gnutls.init(ctypes.byref(self._c_object), gnutls_flags)

648

601

del gnutls_flags

649

gnutls.set_default_priority(self)

650

gnutls.transport_set_ptr(self, socket.fileno())

651

gnutls.handshake_set_private_extensions(self, True)

602

gnutls.set_default_priority(self._c_object)

603

gnutls.transport_set_ptr(self._c_object, socket.fileno())

604

gnutls.handshake_set_private_extensions(self._c_object,

605

True)

652

606

self.socket = socket

653

607

if credentials is None:

654

608

credentials = gnutls.Credentials()

655

gnutls.credentials_set(self, credentials.type,

656

credentials)

609

gnutls.credentials_set(self._c_object, credentials.type,

610

ctypes.cast(credentials._c_object,

611

ctypes.c_void_p))

657

612

self.credentials = credentials

658

613

659

614

def __del__(self):

660

gnutls.deinit(self)

615

gnutls.deinit(self._c_object)

661

616

662

617

def handshake(self):

663

return gnutls.handshake(self)

618

return gnutls.handshake(self._c_object)

664

619

665

620

def send(self, data):

666

621

data = bytes(data)

667

622

data_len = len(data)

668

623

while data_len > 0:

669

data_len -= gnutls.record_send(self, data[-data_len:],

624

data_len -= gnutls.record_send(self._c_object,

625

data[-data_len:],

670

626

data_len)

671

627

672

628

def bye(self):

673

return gnutls.bye(self, gnutls.SHUT_RDWR)

629

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

674

630

675

631

# Error handling functions

676

632

def _error_code(result):

677

633

"""A function to raise exceptions on errors, suitable

678

for the "restype" attribute on ctypes functions"""

679

if result >= gnutls.E_SUCCESS:

634

for the 'restype' attribute on ctypes functions"""

635

if result >= 0:

680

636

return result

681

637

if result == gnutls.E_NO_CERTIFICATE_FOUND:

682

638

raise gnutls.CertificateSecurityError(code=result)

683

639

raise gnutls.Error(code=result)

684

640

685

def _retry_on_error(result, func, arguments,

686

_error_code=_error_code):

641

def _retry_on_error(result, func, arguments):

687

642

"""A function to retry on some errors, suitable

688

for the "errcheck" attribute on ctypes functions"""

689

while result < gnutls.E_SUCCESS:

643

for the 'errcheck' attribute on ctypes functions"""

644

while result < 0:

690

645

if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):

691

646

return _error_code(result)

692

647

result = func(*arguments)

697

652

698

653

# Functions

699

654

priority_set_direct = _library.gnutls_priority_set_direct

700

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

655

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

656

ctypes.POINTER(ctypes.c_char_p)]

702

657

priority_set_direct.restype = _error_code

703

658

704

659

init = _library.gnutls_init

705

init.argtypes = [PointerTo(ClientSession), ctypes.c_int]

660

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

706

661

init.restype = _error_code

707

662

708

663

set_default_priority = _library.gnutls_set_default_priority

709

set_default_priority.argtypes = [ClientSession]

664

set_default_priority.argtypes = [session_t]

710

665

set_default_priority.restype = _error_code

711

666

712

667

record_send = _library.gnutls_record_send

713

record_send.argtypes = [ClientSession, ctypes.c_void_p,

668

record_send.argtypes = [session_t, ctypes.c_void_p,

714

669

ctypes.c_size_t]

715

670

record_send.restype = ctypes.c_ssize_t

716

671

record_send.errcheck = _retry_on_error

718

673

certificate_allocate_credentials = (

719

674

_library.gnutls_certificate_allocate_credentials)

720

675

certificate_allocate_credentials.argtypes = [

721

PointerTo(Credentials)]

676

ctypes.POINTER(certificate_credentials_t)]

722

677

certificate_allocate_credentials.restype = _error_code

723

678

724

679

certificate_free_credentials = (

725

680

_library.gnutls_certificate_free_credentials)

726

certificate_free_credentials.argtypes = [Credentials]

681

certificate_free_credentials.argtypes = [

682

certificate_credentials_t]

727

683

certificate_free_credentials.restype = None

728

684

729

685

handshake_set_private_extensions = (

730

686

_library.gnutls_handshake_set_private_extensions)

731

handshake_set_private_extensions.argtypes = [ClientSession,

687

handshake_set_private_extensions.argtypes = [session_t,

732

688

ctypes.c_int]

733

689

handshake_set_private_extensions.restype = None

734

690

735

691

credentials_set = _library.gnutls_credentials_set

736

credentials_set.argtypes = [ClientSession, credentials_type_t,

737

CastToVoidPointer(Credentials)]

692

credentials_set.argtypes = [session_t, credentials_type_t,

693

ctypes.c_void_p]

738

694

credentials_set.restype = _error_code

739

695

740

696

strerror = _library.gnutls_strerror

742

698

strerror.restype = ctypes.c_char_p

743

699

744

700

certificate_type_get = _library.gnutls_certificate_type_get

745

certificate_type_get.argtypes = [ClientSession]

701

certificate_type_get.argtypes = [session_t]

746

702

certificate_type_get.restype = _error_code

747

703

748

704

certificate_get_peers = _library.gnutls_certificate_get_peers

749

certificate_get_peers.argtypes = [ClientSession,

705

certificate_get_peers.argtypes = [session_t,

750

706

ctypes.POINTER(ctypes.c_uint)]

751

707

certificate_get_peers.restype = ctypes.POINTER(datum_t)

752

708

759

715

global_set_log_function.restype = None

760

716

761

717

deinit = _library.gnutls_deinit

762

deinit.argtypes = [ClientSession]

718

deinit.argtypes = [session_t]

763

719

deinit.restype = None

764

720

765

721

handshake = _library.gnutls_handshake

766

handshake.argtypes = [ClientSession]

767

handshake.restype = ctypes.c_int

722

handshake.argtypes = [session_t]

723

handshake.restype = _error_code

768

724

handshake.errcheck = _retry_on_error

769

725

770

726

transport_set_ptr = _library.gnutls_transport_set_ptr

771

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

727

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

728

transport_set_ptr.restype = None

773

729

774

730

bye = _library.gnutls_bye

775

bye.argtypes = [ClientSession, close_request_t]

776

bye.restype = ctypes.c_int

731

bye.argtypes = [session_t, close_request_t]

732

bye.restype = _error_code

777

733

bye.errcheck = _retry_on_error

778

734

779

735

check_version = _library.gnutls_check_version

796

752

797

753

x509_crt_fmt_t = ctypes.c_int

798

754

799

# All the function declarations below are from

800

# gnutls/abstract.h

755

# All the function declarations below are from gnutls/abstract.h

801

756

pubkey_init = _library.gnutls_pubkey_init

802

757

pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]

803

758

pubkey_init.restype = _error_code

817

772

pubkey_deinit.argtypes = [pubkey_t]

818

773

pubkey_deinit.restype = None

819

774

else:

820

# All the function declarations below are from

821

# gnutls/openpgp.h

775

# All the function declarations below are from gnutls/openpgp.h

822

776

823

777

openpgp_crt_init = _library.gnutls_openpgp_crt_init

824

778

openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]

830

784

openpgp_crt_fmt_t]

831

785

openpgp_crt_import.restype = _error_code

832

786

833

openpgp_crt_verify_self = \

834

_library.gnutls_openpgp_crt_verify_self

835

openpgp_crt_verify_self.argtypes = [

836

openpgp_crt_t,

837

ctypes.c_uint,

838

ctypes.POINTER(ctypes.c_uint),

839

]

787

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

788

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

789

ctypes.POINTER(ctypes.c_uint)]

840

790

openpgp_crt_verify_self.restype = _error_code

841

791

842

792

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

853

803

854

804

if check_version(b"3.6.4"):

855

805

certificate_type_get2 = _library.gnutls_certificate_type_get2

856

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

806

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

807

certificate_type_get2.restype = _error_code

858

808

859

809

# Remove non-public functions

875

825

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

876

826

877

827

Attributes:

878

approved: bool(); None if not yet approved/disapproved

828

approved: bool(); 'None' if not yet approved/disapproved

879

829

approval_delay: datetime.timedelta(); Time to wait for approval

880

830

approval_duration: datetime.timedelta(); Duration of one approval

881

831

checker: multiprocessing.Process(); a running checker process used

882

to see if the client lives. None if no process is

832

to see if the client lives. 'None' if no process is

883

833

running.

884

834

checker_callback_tag: a GLib event source tag, or None

885

835

checker_command: string; External command which is run to check

961

911

# key_id() and fingerprint() functions

962

912

client["key_id"] = (section.get("key_id", "").upper()

963

913

.replace(" ", ""))

964

client["fingerprint"] = (section.get("fingerprint",

965

"").upper()

914

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

966

915

.replace(" ", ""))

967

if not (client["key_id"] or client["fingerprint"]):

968

log.error("Skipping client %s without key_id or"

969

" fingerprint", client_name)

970

del settings[client_name]

971

continue

972

916

if "secret" in section:

973

917

client["secret"] = codecs.decode(section["secret"]

974

918

.encode("utf-8"),

1015

959

self.last_enabled = None

1016

960

self.expires = None

1017

961

1018

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

1019

log.debug(" Key ID: %s", self.key_id)

1020

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

962

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

963

logger.debug(" Key ID: %s", self.key_id)

964

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

1021

965

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

1022

966

datetime.datetime.utcnow())

1023

967

1051

995

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

1052

996

# Already enabled

1053

997

return

998

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

1054

999

self.enabled = True

1055

1000

self.last_enabled = datetime.datetime.utcnow()

1056

1001

self.init_checker()

1061

1006

if not getattr(self, "enabled", False):

1062

1007

return False

1063

1008

if not quiet:

1064

log.info("Disabling client %s", self.name)

1009

logger.info("Disabling client %s", self.name)

1065

1010

if getattr(self, "disable_initiator_tag", None) is not None:

1066

1011

GLib.source_remove(self.disable_initiator_tag)

1067

1012

self.disable_initiator_tag = None

1079

1024

def __del__(self):

1080

1025

self.disable()

1081

1026

1082

def init_checker(self, randomize_start=False):

1083

# Schedule a new checker to be started a randomly selected

1084

# time (a fraction of 'interval') from now. This spreads out

1085

# the startup of checkers over time when the server is

1086

# started.

1027

def init_checker(self):

1028

# Schedule a new checker to be started an 'interval' from now,

1029

# and every interval from then on.

1087

1030

if self.checker_initiator_tag is not None:

1088

1031

GLib.source_remove(self.checker_initiator_tag)

1089

interval_milliseconds = int(self.interval.total_seconds()

1090

* 1000)

1091

if randomize_start:

1092

delay_milliseconds = random.randrange(

1093

interval_milliseconds + 1)

1094

else:

1095

delay_milliseconds = interval_milliseconds

1096

1032

self.checker_initiator_tag = GLib.timeout_add(

1097

delay_milliseconds, self.start_checker, randomize_start)

1098

delay = datetime.timedelta(0, 0, 0, delay_milliseconds)

1099

# A checker might take up to an 'interval' of time, so we can

1100

# expire at the soonest one interval after a checker was

1101

# started. Since the initial checker is delayed, the expire

1102

# time might have to be extended.

1103

now = datetime.datetime.utcnow()

1104

self.expires = now + delay + self.interval

1105

# Schedule a disable() at expire time

1033

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

1034

self.start_checker)

1035

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

1106

1036

if self.disable_initiator_tag is not None:

1107

1037

GLib.source_remove(self.disable_initiator_tag)

1108

1038

self.disable_initiator_tag = GLib.timeout_add(

1109

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

1110

self.disable)

1039

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

1040

# Also start a new checker *right now*.

1041

self.start_checker()

1111

1042

1112

1043

def checker_callback(self, source, condition, connection,

1113

1044

command):

1115

1046

# Read return code from connection (see call_pipe)

1116

1047

returncode = connection.recv()

1117

1048

connection.close()

1118

if self.checker is not None:

1119

self.checker.join()

1049

self.checker.join()

1120

1050

self.checker_callback_tag = None

1121

1051

self.checker = None

1122

1052

1124

1054

self.last_checker_status = returncode

1125

1055

self.last_checker_signal = None

1126

1056

if self.last_checker_status == 0:

1127

log.info("Checker for %(name)s succeeded", vars(self))

1057

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

1058

vars(self))

1128

1059

self.checked_ok()

1129

1060

else:

1130

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

1061

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

1131

1062

else:

1132

1063

self.last_checker_status = -1

1133

1064

self.last_checker_signal = -returncode

1134

log.warning("Checker for %(name)s crashed?", vars(self))

1065

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

1066

vars(self))

1135

1067

return False

1136

1068

1137

1069

def checked_ok(self):

1156

1088

def need_approval(self):

1157

1089

self.last_approval_request = datetime.datetime.utcnow()

1158

1090

1159

def start_checker(self, start_was_randomized=False):

1091

def start_checker(self):

1160

1092

"""Start a new checker subprocess if one is not running.

1161

1093

1162

1094

If a checker already exists, leave it running and do

1171

1103

# should be.

1172

1104

1173

1105

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

1174

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

1106

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

1175

1107

self.checker.join()

1176

1108

self.checker = None

1177

1109

# Start a new checker if needed

1178

1110

if self.checker is None:

1179

1111

# Escape attributes for the shell

1180

1112

escaped_attrs = {

1181

attr: shlex.quote(str(getattr(self, attr)))

1113

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

1182

1114

for attr in self.runtime_expansions}

1183

1115

try:

1184

1116

command = self.checker_command % escaped_attrs

1185

1117

except TypeError as error:

1186

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

1187

self.checker_command, exc_info=error)

1118

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

1119

self.checker_command,

1120

exc_info=error)

1188

1121

return True # Try again later

1189

1122

self.current_checker_command = command

1190

log.info("Starting checker %r for %s", command, self.name)

1123

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

1124

self.name)

1191

1125

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

1192

1126

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

1193

1127

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

1209

1143

kwargs=popen_args)

1210

1144

self.checker.start()

1211

1145

self.checker_callback_tag = GLib.io_add_watch(

1212

GLib.IOChannel.unix_new(pipe[0].fileno()),

1213

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1146

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

1214

1147

self.checker_callback, pipe[0], command)

1215

if start_was_randomized:

1216

# We were started after a random delay; Schedule a new

1217

# checker to be started an 'interval' from now, and every

1218

# interval from then on.

1219

now = datetime.datetime.utcnow()

1220

self.checker_initiator_tag = GLib.timeout_add(

1221

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

1222

self.start_checker)

1223

self.expires = max(self.expires, now + self.interval)

1224

# Don't start a new checker again after same random delay

1225

return False

1226

1148

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

1227

1149

return True

1228

1150

1233

1155

self.checker_callback_tag = None

1234

1156

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

1235

1157

return

1236

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

1158

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

1237

1159

self.checker.terminate()

1238

1160

self.checker = None

1239

1161

1266

1188

func._dbus_name = func.__name__

1267

1189

if func._dbus_name.endswith("_dbus_property"):

1268

1190

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

1269

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1191

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1270

1192

return func

1271

1193

1272

1194

return decorator

1361

1283

1362

1284

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1363

1285

out_signature="s",

1364

path_keyword="object_path",

1365

connection_keyword="connection")

1286

path_keyword='object_path',

1287

connection_keyword='connection')

1366

1288

def Introspect(self, object_path, connection):

1367

1289

"""Overloading of standard D-Bus method.

1368

1290

1417

1339

document.unlink()

1418

1340

except (AttributeError, xml.dom.DOMException,

1419

1341

xml.parsers.expat.ExpatError) as error:

1420

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

1421

exc_info=error)

1342

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

1343

exc_info=error)

1422

1344

return xmlstring

1423

1345

1424

1346

1482

1404

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

1483

1405

"'ay' signature {!r}"

1484

1406

.format(prop._dbus_signature))

1485

value = dbus.ByteArray(bytes(value))

1407

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

1408

for byte in value))

1486

1409

prop(value)

1487

1410

1488

1411

@dbus.service.method(dbus.PROPERTIES_IFACE,

1521

1444

1522

1445

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1523

1446

out_signature="s",

1524

path_keyword="object_path",

1525

connection_keyword="connection")

1447

path_keyword='object_path',

1448

connection_keyword='connection')

1526

1449

def Introspect(self, object_path, connection):

1527

1450

"""Overloading of standard D-Bus method.

1528

1451

1584

1507

document.unlink()

1585

1508

except (AttributeError, xml.dom.DOMException,

1586

1509

xml.parsers.expat.ExpatError) as error:

1587

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

1588

exc_info=error)

1510

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

1511

exc_info=error)

1589

1512

return xmlstring

1590

1513

1591

1514

1623

1546

1624

1547

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1625

1548

out_signature="s",

1626

path_keyword="object_path",

1627

connection_keyword="connection")

1549

path_keyword='object_path',

1550

connection_keyword='connection')

1628

1551

def Introspect(self, object_path, connection):

1629

1552

"""Overloading of standard D-Bus method.

1630

1553

1655

1578

document.unlink()

1656

1579

except (AttributeError, xml.dom.DOMException,

1657

1580

xml.parsers.expat.ExpatError) as error:

1658

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

1659

exc_info=error)

1581

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

1582

exc_info=error)

1660

1583

return xmlstring

1661

1584

1662

1585

2296

2219

class ProxyClient:

2297

2220

def __init__(self, child_pipe, key_id, fpr, address):

2298

2221

self._pipe = child_pipe

2299

self._pipe.send(("init", key_id, fpr, address))

2222

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

2300

2223

if not self._pipe.recv():

2301

2224

raise KeyError(key_id or fpr)

2302

2225

2303

2226

def __getattribute__(self, name):

2304

if name == "_pipe":

2227

if name == '_pipe':

2305

2228

return super(ProxyClient, self).__getattribute__(name)

2306

self._pipe.send(("getattr", name))

2229

self._pipe.send(('getattr', name))

2307

2230

data = self._pipe.recv()

2308

if data[0] == "data":

2231

if data[0] == 'data':

2309

2232

return data[1]

2310

if data[0] == "function":

2233

if data[0] == 'function':

2311

2234

2312

2235

def func(*args, **kwargs):

2313

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

2236

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

2314

2237

return self._pipe.recv()[1]

2315

2238

2316

2239

return func

2317

2240

2318

2241

def __setattr__(self, name, value):

2319

if name == "_pipe":

2242

if name == '_pipe':

2320

2243

return super(ProxyClient, self).__setattr__(name, value)

2321

self._pipe.send(("setattr", name, value))

2244

self._pipe.send(('setattr', name, value))

2322

2245

2323

2246

2324

2247

class ClientHandler(socketserver.BaseRequestHandler, object):

2329

2252

2330

2253

def handle(self):

2331

2254

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

2332

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

2333

str(self.client_address))

2334

log.debug("Pipe FD: %d", self.server.child_pipe.fileno())

2255

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

2256

str(self.client_address))

2257

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

2258

self.server.child_pipe.fileno())

2335

2259

2336

2260

session = gnutls.ClientSession(self.request)

2337

2261

2338

# priority = ":".join(("NONE", "+VERS-TLS1.1",

2262

# priority = ':'.join(("NONE", "+VERS-TLS1.1",

2339

2263

# "+AES-256-CBC", "+SHA1",

2340

2264

# "+COMP-NULL", "+CTYPE-OPENPGP",

2341

2265

# "+DHE-DSS"))

2343

2267

priority = self.server.gnutls_priority

2344

2268

if priority is None:

2345

2269

priority = "NORMAL"

2346

gnutls.priority_set_direct(session,

2347

priority.encode("utf-8"), None)

2270

gnutls.priority_set_direct(session._c_object,

2271

priority.encode("utf-8"),

2272

None)

2348

2273

2349

2274

# Start communication using the Mandos protocol

2350

2275

# Get protocol number

2351

2276

line = self.request.makefile().readline()

2352

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

2277

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

2353

2278

try:

2354

2279

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

2355

2280

raise RuntimeError(line)

2356

2281

except (ValueError, IndexError, RuntimeError) as error:

2357

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

2282

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

2358

2283

return

2359

2284

2360

2285

# Start GnuTLS connection

2361

2286

try:

2362

2287

session.handshake()

2363

2288

except gnutls.Error as error:

2364

log.warning("Handshake failed: %s", error)

2289

logger.warning("Handshake failed: %s", error)

2365

2290

# Do not run session.bye() here: the session is not

2366

2291

# established. Just abandon the request.

2367

2292

return

2368

log.debug("Handshake succeeded")

2293

logger.debug("Handshake succeeded")

2369

2294

2370

2295

approval_required = False

2371

2296

try:

2375

2300

key_id = self.key_id(

2376

2301

self.peer_certificate(session))

2377

2302

except (TypeError, gnutls.Error) as error:

2378

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

2303

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

2379

2304

return

2380

log.debug("Key ID: %s",

2381

key_id.decode("utf-8",

2382

errors="replace"))

2305

logger.debug("Key ID: %s", key_id)

2383

2306

2384

2307

else:

2385

2308

key_id = b""

2387

2310

fpr = self.fingerprint(

2388

2311

self.peer_certificate(session))

2389

2312

except (TypeError, gnutls.Error) as error:

2390

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

2313

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

2391

2314

return

2392

log.debug("Fingerprint: %s", fpr)

2315

logger.debug("Fingerprint: %s", fpr)

2393

2316

2394

2317

try:

2395

2318

client = ProxyClient(child_pipe, key_id, fpr,

2404

2327

2405

2328

while True:

2406

2329

if not client.enabled:

2407

log.info("Client %s is disabled", client.name)

2330

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

2331

client.name)

2408

2332

if self.server.use_dbus:

2409

2333

# Emit D-Bus signal

2410

2334

client.Rejected("Disabled")

2414

2338

# We are approved or approval is disabled

2415

2339

break

2416

2340

elif client.approved is None:

2417

log.info("Client %s needs approval",

2418

client.name)

2341

logger.info("Client %s needs approval",

2342

client.name)

2419

2343

if self.server.use_dbus:

2420

2344

# Emit D-Bus signal

2421

2345

client.NeedApproval(

2422

2346

client.approval_delay.total_seconds()

2423

2347

* 1000, client.approved_by_default)

2424

2348

else:

2425

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

2426

client.name)

2349

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

2350

client.name)

2427

2351

if self.server.use_dbus:

2428

2352

# Emit D-Bus signal

2429

2353

client.Rejected("Denied")

2437

2361

time2 = datetime.datetime.now()

2438

2362

if (time2 - time) >= delay:

2439

2363

if not client.approved_by_default:

2440

log.warning("Client %s timed out while"

2441

" waiting for approval",

2442

client.name)

2364

logger.warning("Client %s timed out while"

2365

" waiting for approval",

2366

client.name)

2443

2367

if self.server.use_dbus:

2444

2368

# Emit D-Bus signal

2445

2369

client.Rejected("Approval timed out")

2452

2376

try:

2453

2377

session.send(client.secret)

2454

2378

except gnutls.Error as error:

2455

log.warning("gnutls send failed", exc_info=error)

2379

logger.warning("gnutls send failed",

2380

exc_info=error)

2456

2381

return

2457

2382

2458

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

2383

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

2459

2384

# bump the timeout using extended_timeout

2460

2385

client.bump_timeout(client.extended_timeout)

2461

2386

if self.server.use_dbus:

2468

2393

try:

2469

2394

session.bye()

2470

2395

except gnutls.Error as error:

2471

log.warning("GnuTLS bye failed", exc_info=error)

2396

logger.warning("GnuTLS bye failed",

2397

exc_info=error)

2472

2398

2473

2399

@staticmethod

2474

2400

def peer_certificate(session):

2475

2401

"Return the peer's certificate as a bytestring"

2476

2402

try:

2477

cert_type = gnutls.certificate_type_get2(

2478

session, gnutls.CTYPE_PEERS)

2403

cert_type = gnutls.certificate_type_get2(session._c_object,

2404

gnutls.CTYPE_PEERS)

2479

2405

except AttributeError:

2480

cert_type = gnutls.certificate_type_get(session)

2406

cert_type = gnutls.certificate_type_get(session._c_object)

2481

2407

if gnutls.has_rawpk:

2482

2408

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2483

2409

else:

2484

2410

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2485

2411

# If not a valid certificate type...

2486

2412

if cert_type not in valid_cert_types:

2487

log.info("Cert type %r not in %r", cert_type,

2488

valid_cert_types)

2413

logger.info("Cert type %r not in %r", cert_type,

2414

valid_cert_types)

2489

2415

# ...return invalid data

2490

2416

return b""

2491

2417

list_size = ctypes.c_uint(1)

2492

2418

cert_list = (gnutls.certificate_get_peers

2493

(session, ctypes.byref(list_size)))

2419

(session._c_object, ctypes.byref(list_size)))

2494

2420

if not bool(cert_list) and list_size.value != 0:

2495

2421

raise gnutls.Error("error getting peer certificate")

2496

2422

if list_size.value == 0:

2518

2444

buf = ctypes.create_string_buffer(32)

2519

2445

buf_len = ctypes.c_size_t(len(buf))

2520

2446

# Get the key ID from the raw public key into the buffer

2521

gnutls.pubkey_get_key_id(

2522

pubkey,

2523

gnutls.KEYID_USE_SHA256,

2524

ctypes.cast(ctypes.byref(buf),

2525

ctypes.POINTER(ctypes.c_ubyte)),

2526

ctypes.byref(buf_len))

2447

gnutls.pubkey_get_key_id(pubkey,

2448

gnutls.KEYID_USE_SHA256,

2449

ctypes.cast(ctypes.byref(buf),

2450

ctypes.POINTER(ctypes.c_ubyte)),

2451

ctypes.byref(buf_len))

2527

2452

# Deinit the certificate

2528

2453

gnutls.pubkey_deinit(pubkey)

2529

2454

2610

2535

2611

2536

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2612

2537

socketserver.TCPServer):

2613

"""IPv6-capable TCP server. Accepts None as address and/or port

2538

"""IPv6-capable TCP server. Accepts 'None' as address and/or port

2614

2539

2615

2540

Attributes:

2616

2541

enabled: Boolean; whether this server is activated yet

2667

2592

if SO_BINDTODEVICE is None:

2668

2593

# Fall back to a hard-coded value which seems to be

2669

2594

# common enough.

2670

log.warning("SO_BINDTODEVICE not found, trying 25")

2595

logger.warning("SO_BINDTODEVICE not found, trying 25")

2671

2596

SO_BINDTODEVICE = 25

2672

2597

try:

2673

2598

self.socket.setsockopt(

2675

2600

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

2676

2601

except socket.error as error:

2677

2602

if error.errno == errno.EPERM:

2678

log.error("No permission to bind to interface %s",

2679

self.interface)

2603

logger.error("No permission to bind to"

2604

" interface %s", self.interface)

2680

2605

elif error.errno == errno.ENOPROTOOPT:

2681

log.error("SO_BINDTODEVICE not available; cannot"

2682

" bind to interface %s", self.interface)

2606

logger.error("SO_BINDTODEVICE not available;"

2607

" cannot bind to interface %s",

2608

self.interface)

2683

2609

elif error.errno == errno.ENODEV:

2684

log.error("Interface %s does not exist, cannot"

2685

" bind", self.interface)

2610

logger.error("Interface %s does not exist,"

2611

" cannot bind", self.interface)

2686

2612

else:

2687

2613

raise

2688

2614

# Only bind(2) the socket if we really need to.

2747

2673

def add_pipe(self, parent_pipe, proc):

2748

2674

# Call "handle_ipc" for both data and EOF events

2749

2675

GLib.io_add_watch(

2750

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2751

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2676

parent_pipe.fileno(),

2677

GLib.IO_IN | GLib.IO_HUP,

2752

2678

functools.partial(self.handle_ipc,

2753

2679

parent_pipe=parent_pipe,

2754

2680

proc=proc))

2767

2693

request = parent_pipe.recv()

2768

2694

command = request[0]

2769

2695

2770

if command == "init":

2696

if command == 'init':

2771

2697

key_id = request[1].decode("ascii")

2772

2698

fpr = request[2].decode("ascii")

2773

2699

address = request[3]

2774

2700

2775

2701

for c in self.clients.values():

2776

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2777

"27AE41E4649B934CA495991B7852B855"):

2702

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2778

2703

continue

2779

2704

if key_id and c.key_id == key_id:

2780

2705

client = c

2783

2708

client = c

2784

2709

break

2785

2710

else:

2786

log.info("Client not found for key ID: %s, address:"

2787

" %s", key_id or fpr, address)

2711

logger.info("Client not found for key ID: %s, address"

2712

": %s", key_id or fpr, address)

2788

2713

if self.use_dbus:

2789

2714

# Emit D-Bus signal

2790

2715

mandos_dbus_service.ClientNotFound(key_id or fpr,

2793

2718

return False

2794

2719

2795

2720

GLib.io_add_watch(

2796

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2797

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2721

parent_pipe.fileno(),

2722

GLib.IO_IN | GLib.IO_HUP,

2798

2723

functools.partial(self.handle_ipc,

2799

2724

parent_pipe=parent_pipe,

2800

2725

proc=proc,

2803

2728

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

2804

2729

# same fileno

2805

2730

return False

2806

if command == "funcall":

2731

if command == 'funcall':

2807

2732

funcname = request[1]

2808

2733

args = request[2]

2809

2734

kwargs = request[3]

2810

2735

2811

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

2736

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

2812

2737

funcname)(*args,

2813

2738

**kwargs)))

2814

2739

2815

if command == "getattr":

2740

if command == 'getattr':

2816

2741

attrname = request[1]

2817

2742

if isinstance(client_object.__getattribute__(attrname),

2818

collections.abc.Callable):

2819

parent_pipe.send(("function", ))

2743

collections.Callable):

2744

parent_pipe.send(('function', ))

2820

2745

else:

2821

2746

parent_pipe.send((

2822

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

2747

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

2823

2748

2824

if command == "setattr":

2749

if command == 'setattr':

2825

2750

attrname = request[1]

2826

2751

value = request[2]

2827

2752

setattr(client_object, attrname, value)

2832

2757

def rfc3339_duration_to_delta(duration):

2833

2758

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2834

2759

2835

>>> timedelta = datetime.timedelta

2836

>>> rfc3339_duration_to_delta("P7D") == timedelta(7)

2837

True

2838

>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)

2839

True

2840

>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)

2841

True

2842

>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)

2843

True

2844

>>> rfc3339_duration_to_delta("P1W") == timedelta(7)

2845

True

2846

>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)

2847

True

2848

>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)

2849

True

2850

>>> del timedelta

2760

>>> rfc3339_duration_to_delta("P7D")

2761

datetime.timedelta(7)

2762

>>> rfc3339_duration_to_delta("PT60S")

2763

datetime.timedelta(0, 60)

2764

>>> rfc3339_duration_to_delta("PT60M")

2765

datetime.timedelta(0, 3600)

2766

>>> rfc3339_duration_to_delta("PT24H")

2767

datetime.timedelta(1)

2768

>>> rfc3339_duration_to_delta("P1W")

2769

datetime.timedelta(7)

2770

>>> rfc3339_duration_to_delta("PT5M30S")

2771

datetime.timedelta(0, 330)

2772

>>> rfc3339_duration_to_delta("P1DT3M20S")

2773

datetime.timedelta(1, 200)

2851

2774

"""

2852

2775

2853

2776

# Parsing an RFC 3339 duration with regular expressions is not

2933

2856

def string_to_delta(interval):

2934

2857

"""Parse a string and return a datetime.timedelta

2935

2858

2936

>>> string_to_delta("7d") == datetime.timedelta(7)

2937

True

2938

>>> string_to_delta("60s") == datetime.timedelta(0, 60)

2939

True

2940

>>> string_to_delta("60m") == datetime.timedelta(0, 3600)

2941

True

2942

>>> string_to_delta("24h") == datetime.timedelta(1)

2943

True

2944

>>> string_to_delta("1w") == datetime.timedelta(7)

2945

True

2946

>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)

2947

True

2859

>>> string_to_delta('7d')

2860

datetime.timedelta(7)

2861

>>> string_to_delta('60s')

2862

datetime.timedelta(0, 60)

2863

>>> string_to_delta('60m')

2864

datetime.timedelta(0, 3600)

2865

>>> string_to_delta('24h')

2866

datetime.timedelta(1)

2867

>>> string_to_delta('1w')

2868

datetime.timedelta(7)

2869

>>> string_to_delta('5m 30s')

2870

datetime.timedelta(0, 330)

2948

2871

"""

2949

2872

2950

2873

try:

3052

2975

3053

2976

options = parser.parse_args()

3054

2977

2978

if options.check:

2979

import doctest

2980

fail_count, test_count = doctest.testmod()

2981

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

2982

3055

2983

# Default values for config file for server-global settings

3056

2984

if gnutls.has_rawpk:

3057

2985

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

3153

3081

3154

3082

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

3155

3083

syslogger.setFormatter(

3156

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

3157

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

3084

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

3085

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

3158

3086

server_settings["servicename"])))

3159

3087

3160

3088

# Parse config file with clients

3184

3112

try:

3185

3113

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

3186

3114

except IOError as e:

3187

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

3188

exc_info=e)

3115

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

3116

exc_info=e)

3189

3117

3190

3118

for name, group in (("_mandos", "_mandos"),

3191

3119

("mandos", "mandos"),

3202

3130

try:

3203

3131

os.setgid(gid)

3204

3132

os.setuid(uid)

3205

log.debug("Did setuid/setgid to %s:%s", uid, gid)

3133

if debug:

3134

logger.debug("Did setuid/setgid to {}:{}".format(uid,

3135

gid))

3206

3136

except OSError as error:

3207

log.warning("Failed to setuid/setgid to %s:%s: %s", uid, gid,

3208

os.strerror(error.errno))

3137

logger.warning("Failed to setuid/setgid to {}:{}: {}"

3138

.format(uid, gid, os.strerror(error.errno)))

3209

3139

if error.errno != errno.EPERM:

3210

3140

raise

3211

3141

3218

3148

3219

3149

@gnutls.log_func

3220

3150

def debug_gnutls(level, string):

3221

log.debug("GnuTLS: %s",

3222

string[:-1].decode("utf-8", errors="replace"))

3151

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

3223

3152

3224

3153

gnutls.global_set_log_function(debug_gnutls)

3225

3154

3243

3172

# From the Avahi example code

3244

3173

DBusGMainLoop(set_as_default=True)

3245

3174

main_loop = GLib.MainLoop()

3246

if use_dbus or zeroconf:

3247

bus = dbus.SystemBus()

3175

bus = dbus.SystemBus()

3248

3176

# End of Avahi example code

3249

3177

if use_dbus:

3250

3178

try:

3255

3183

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

3256

3184

do_not_queue=True)

3257

3185

except dbus.exceptions.DBusException as e:

3258

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

3186

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

3259

3187

use_dbus = False

3260

3188

server_settings["use_dbus"] = False

3261

3189

tcp_server.use_dbus = False

3320

3248

if isinstance(s, bytes)

3321

3249

else s) for s in

3322

3250

value["client_structure"]]

3323

# .name, .host, and .checker_command

3324

for k in ("name", "host", "checker_command"):

3251

# .name & .host

3252

for k in ("name", "host"):

3325

3253

if isinstance(value[k], bytes):

3326

3254

value[k] = value[k].decode("utf-8")

3327

3255

if "key_id" not in value:

3337

3265

for key, value in

3338

3266

bytes_old_client_settings.items()}

3339

3267

del bytes_old_client_settings

3340

# .host and .checker_command

3268

# .host

3341

3269

for value in old_client_settings.values():

3342

for attribute in ("host", "checker_command"):

3343

if isinstance(value[attribute], bytes):

3344

value[attribute] = (value[attribute]

3345

.decode("utf-8"))

3270

if isinstance(value["host"], bytes):

3271

value["host"] = (value["host"]

3272

.decode("utf-8"))

3346

3273

os.remove(stored_state_path)

3347

3274

except IOError as e:

3348

3275

if e.errno == errno.ENOENT:

3349

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

3350

" %s", os.strerror(e.errno))

3276

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

3277

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

3351

3278

else:

3352

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

3353

exc_info=e)

3279

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

3280

exc_info=e)

3354

3281

raise

3355

3282

except EOFError as e:

3356

log.warning("Could not load persistent state: EOFError:",

3357

exc_info=e)

3283

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

3284

"EOFError:",

3285

exc_info=e)

3358

3286

3359

3287

with PGPEngine() as pgp:

3360

3288

for client_name, client in clients_data.items():

3387

3315

if client["enabled"]:

3388

3316

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

3389

3317

if not client["last_checked_ok"]:

3390

log.warning("disabling client %s - Client"

3391

" never performed a successful"

3392

" checker", client_name)

3318

logger.warning(

3319

"disabling client {} - Client never "

3320

"performed a successful checker".format(

3321

client_name))

3393

3322

client["enabled"] = False

3394

3323

elif client["last_checker_status"] != 0:

3395

log.warning("disabling client %s - Client"

3396

" last checker failed with error"

3397

" code %s", client_name,

3398

client["last_checker_status"])

3324

logger.warning(

3325

"disabling client {} - Client last"

3326

" checker failed with error code"

3327

" {}".format(

3328

client_name,

3329

client["last_checker_status"]))

3399

3330

client["enabled"] = False

3400

3331

else:

3401

3332

client["expires"] = (

3402

3333

datetime.datetime.utcnow()

3403

3334

+ client["timeout"])

3404

log.debug("Last checker succeeded, keeping %s"

3405

" enabled", client_name)

3335

logger.debug("Last checker succeeded,"

3336

" keeping {} enabled".format(

3337

client_name))

3406

3338

try:

3407

3339

client["secret"] = pgp.decrypt(

3408

3340

client["encrypted_secret"],

3409

3341

client_settings[client_name]["secret"])

3410

3342

except PGPError:

3411

3343

# If decryption fails, we use secret from new settings

3412

log.debug("Failed to decrypt %s old secret",

3413

client_name)

3344

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

3345

client_name))

3414

3346

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

3415

3347

["secret"])

3416

3348

3430

3362

server_settings=server_settings)

3431

3363

3432

3364

if not tcp_server.clients:

3433

log.warning("No clients defined")

3365

logger.warning("No clients defined")

3434

3366

3435

3367

if not foreground:

3436

3368

if pidfile is not None:

3439

3371

with pidfile:

3440

3372

print(pid, file=pidfile)

3441

3373

except IOError:

3442

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

3443

pidfilename, pid)

3374

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

3375

pidfilename, pid)

3444

3376

del pidfile

3445

3377

del pidfilename

3446

3378

3596

3528

3597

3529

try:

3598

3530

with tempfile.NamedTemporaryFile(

3599

mode="wb",

3531

mode='wb',

3600

3532

suffix=".pickle",

3601

prefix="clients-",

3533

prefix='clients-',

3602

3534

dir=os.path.dirname(stored_state_path),

3603

3535

delete=False) as stored_state:

3604

3536

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

3612

3544

except NameError:

3613

3545

pass

3614

3546

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

3615

log.warning("Could not save persistent state: %s",

3616

os.strerror(e.errno))

3547

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

3548

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

3617

3549

else:

3618

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

3619

exc_info=e)

3550

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

3551

exc_info=e)

3620

3552

raise

3621

3553

3622

3554

# Delete all clients, and settings from config

3639

3571

mandos_dbus_service.client_added_signal(client)

3640

3572

# Need to initiate checking of clients

3641

3573

if client.enabled:

3642

client.init_checker(randomize_start=True)

3574

client.init_checker()

3643

3575

3644

3576

tcp_server.enable()

3645

3577

tcp_server.server_activate()

3648

3580

if zeroconf:

3649

3581

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

3650

3582

if use_ipv6:

3651

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

3652

" scope_id %d", *tcp_server.socket.getsockname())

3583

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

3584

" flowinfo %d, scope_id %d",

3585

*tcp_server.socket.getsockname())

3653

3586

else: # IPv4

3654

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

3655

*tcp_server.socket.getsockname())

3587

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

3588

*tcp_server.socket.getsockname())

3656

3589

3657

3590

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

3658

3591

3662

3595

try:

3663

3596

service.activate()

3664

3597

except dbus.exceptions.DBusException as error:

3665

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

3598

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

3666

3599

cleanup()

3667

3600

sys.exit(1)

3668

3601

# End of Avahi example code

3669

3602

3670

GLib.io_add_watch(

3671

GLib.IOChannel.unix_new(tcp_server.fileno()),

3672

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3673

lambda *args, **kwargs: (tcp_server.handle_request

3674

(*args[2:], **kwargs) or True))

3603

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

3604

lambda *args, **kwargs:

3605

(tcp_server.handle_request

3606

(*args[2:], **kwargs) or True))

3675

3607

3676

log.debug("Starting main loop")

3608

logger.debug("Starting main loop")

3677

3609

main_loop.run()

3678

3610

except AvahiError as error:

3679

log.critical("Avahi Error", exc_info=error)

3611

logger.critical("Avahi Error", exc_info=error)

3680

3612

cleanup()

3681

3613

sys.exit(1)

3682

3614

except KeyboardInterrupt:

3683

3615

if debug:

3684

3616

print("", file=sys.stderr)

3685

log.debug("Server received KeyboardInterrupt")

3686

log.debug("Server exiting")

3617

logger.debug("Server received KeyboardInterrupt")

3618

logger.debug("Server exiting")

3687

3619

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

3688

3620

cleanup()

3689

3621

3690

3691

def parse_test_args():

3692

# type: () -> argparse.Namespace

3693

parser = argparse.ArgumentParser(add_help=False)

3694

parser.add_argument("--check", action="store_true")

3695

parser.add_argument("--prefix", )

3696

args, unknown_args = parser.parse_known_args()

3697

if args.check:

3698

# Remove test options from sys.argv

3699

sys.argv[1:] = unknown_args

3700

return args

3701

3702

# Add all tests from doctest strings

3703

def load_tests(loader, tests, none):

3704

import doctest

3705

tests.addTests(doctest.DocTestSuite())

3706

return tests

3707

3708

if __name__ == "__main__":

3709

options = parse_test_args()

3710

try:

3711

if options.check:

3712

extra_test_prefix = options.prefix

3713

if extra_test_prefix is not None:

3714

if not (unittest.main(argv=[""], exit=False)

3715

.result.wasSuccessful()):

3716

sys.exit(1)

3717

class ExtraTestLoader(unittest.TestLoader):

3718

testMethodPrefix = extra_test_prefix

3719

# Call using ./scriptname --test [--verbose]

3720

unittest.main(argv=[""], testLoader=ExtraTestLoader())

3721

else:

3722

unittest.main(argv=[""])

3723

else:

3724

main()

3725

finally:

3726

logging.shutdown()

3727

3728

# Local Variables:

3729

# run-tests:

3730

# (lambda (&optional extra)

3731

# (if (not (funcall run-tests-in-test-buffer default-directory

3732

# extra))

3733

# (funcall show-test-buffer-in-test-window)

3734

# (funcall remove-test-window)

3735

# (if extra (message "Extra tests run successfully!"))))

3736

# run-tests-in-test-buffer:

3737

# (lambda (dir &optional extra)

3738

# (with-current-buffer (get-buffer-create "*Test*")

3739

# (setq buffer-read-only nil

3740

# default-directory dir)

3741

# (erase-buffer)

3742

# (compilation-mode))

3743

# (let ((process-result

3744

# (let ((inhibit-read-only t))

3745

# (process-file-shell-command

3746

# (funcall get-command-line extra) nil "*Test*"))))

3747

# (and (numberp process-result)

3748

# (= process-result 0))))

3749

# get-command-line:

3750

# (lambda (&optional extra)

3751

# (let ((quoted-script

3752

# (shell-quote-argument (funcall get-script-name))))

3753

# (format

3754

# (concat "%s --check" (if extra " --prefix=atest" ""))

3755

# quoted-script)))

3756

# get-script-name:

3757

# (lambda ()

3758

# (if (fboundp 'file-local-name)

3759

# (file-local-name (buffer-file-name))

3760

# (or (file-remote-p (buffer-file-name) 'localname)

3761

# (buffer-file-name))))

3762

# remove-test-window:

3763

# (lambda ()

3764

# (let ((test-window (get-buffer-window "*Test*")))

3765

# (if test-window (delete-window test-window))))

3766

# show-test-buffer-in-test-window:

3767

# (lambda ()

3768

# (when (not (get-buffer-window-list "*Test*"))

3769

# (setq next-error-last-buffer (get-buffer "*Test*"))

3770

# (let* ((side (if (>= (window-width) 146) 'right 'bottom))

3771

# (display-buffer-overriding-action

3772

# `((display-buffer-in-side-window) (side . ,side)

3773

# (window-height . fit-window-to-buffer)

3774

# (window-width . fit-window-to-buffer))))

3775

# (display-buffer "*Test*"))))

3776

# eval:

3777

# (progn

3778

# (let* ((run-extra-tests (lambda () (interactive)

3779

# (funcall run-tests t)))

3780

# (inner-keymap `(keymap (116 . ,run-extra-tests))) ; t

3781

# (outer-keymap `(keymap (3 . ,inner-keymap)))) ; C-c

3782

# (setq minor-mode-overriding-map-alist

3783

# (cons `(run-tests . ,outer-keymap)

3784

# minor-mode-overriding-map-alist)))

3785

# (add-hook 'after-save-hook run-tests 90 t))

3786

# End:

3622

3623

if __name__ == '__main__':

3624

main()