/mandos/release : revision 237.7.720

1

#!/usr/bin/python3 -bI

2

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

1

#!/usr/bin/python3 -b

2

# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); 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

80

import unittest

82

81

83

82

import dbus

84

83

import dbus.service

92

91

93

92

if sys.version_info.major == 2:

94

93

__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

# Add os.set_inheritable if it does not exist

114

try:

115

os.set_inheritable

116

except AttributeError:

117

def set_inheritable(fd, inheritable):

118

flags = fcntl.fcntl(fd, fcntl.F_GETFD)

119

if inheritable and ((flags & fcntl.FD_CLOEXEC) != 0):

120

fcntl.fcntl(fd, fcntl.F_SETFL, flags & ~fcntl.FD_CLOEXEC)

121

elif (not inheritable) and ((flags & fcntl.FD_CLOEXEC) == 0):

122

fcntl.fcntl(fd, fcntl.F_SETFL, flags | fcntl.FD_CLOEXEC)

123

os.set_inheritable = set_inheritable

124

del set_inheritable

125

94

126

95

# Show warnings by default

127

96

if not sys.warnoptions:

153

122

# No value found

154

123

SO_BINDTODEVICE = None

155

124

125

if sys.version_info.major == 2:

126

str = unicode

127

156

128

if sys.version_info < (3, 2):

157

129

configparser.Configparser = configparser.SafeConfigParser

158

130

159

version = "1.8.17"

131

version = "1.8.8"

160

132

stored_state_file = "clients.pickle"

161

133

162

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

134

logger = logging.getLogger()

163

135

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

164

136

syslogger = None

165

137

202

174

facility=logging.handlers.SysLogHandler.LOG_DAEMON,

203

175

address="/dev/log"))

204

176

syslogger.setFormatter(logging.Formatter

205

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

206

" %(message)s"))

207

log.addHandler(syslogger)

177

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

178

' %(message)s'))

179

logger.addHandler(syslogger)

208

180

209

181

if debug:

210

182

console = logging.StreamHandler()

211

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

212

" [%(process)d]:"

213

" %(levelname)s:"

214

" %(message)s"))

215

log.addHandler(console)

216

log.setLevel(level)

183

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

184

' [%(process)d]:'

185

' %(levelname)s:'

186

' %(message)s'))

187

logger.addHandler(console)

188

logger.setLevel(level)

217

189

218

190

219

191

class PGPError(Exception):

231

203

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

232

204

for line in output.splitlines():

233

205

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

234

if name == b"gpg":

206

if name == "gpg":

235

207

self.gpg = path

236

208

break

237

209

except OSError as e:

238

210

if e.errno != errno.ENOENT:

239

211

raise

240

self.gnupgargs = ["--batch",

241

"--homedir", self.tempdir,

242

"--force-mdc",

243

"--quiet"]

212

self.gnupgargs = ['--batch',

213

'--homedir', self.tempdir,

214

'--force-mdc',

215

'--quiet']

244

216

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

245

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

217

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

246

218

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

247

219

248

220

def __enter__(self):

285

257

dir=self.tempdir) as passfile:

286

258

passfile.write(passphrase)

287

259

passfile.flush()

288

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

289

"--passphrase-file",

260

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

261

'--passphrase-file',

290

262

passfile.name]

291

263

+ self.gnupgargs,

292

264

stdin=subprocess.PIPE,

303

275

dir=self.tempdir) as passfile:

304

276

passfile.write(passphrase)

305

277

passfile.flush()

306

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

307

"--passphrase-file",

278

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

279

'--passphrase-file',

308

280

passfile.name]

309

281

+ self.gnupgargs,

310

282

stdin=subprocess.PIPE,

363

335

Attributes:

364

336

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

365

337

Used to optionally bind to the specified interface.

366

name: string; Example: "Mandos"

367

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

338

name: string; Example: 'Mandos'

339

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

368

340

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

369

341

port: integer; what port to announce

370

342

TXT: list of strings; TXT record for the service

407

379

def rename(self, remove=True):

408

380

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

409

381

if self.rename_count >= self.max_renames:

410

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

411

" after %i retries, exiting.",

412

self.rename_count)

382

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

383

" after %i retries, exiting.",

384

self.rename_count)

413

385

raise AvahiServiceError("Too many renames")

414

386

self.name = str(

415

387

self.server.GetAlternativeServiceName(self.name))

416

388

self.rename_count += 1

417

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

418

self.name)

389

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

390

self.name)

419

391

if remove:

420

392

self.remove()

421

393

try:

423

395

except dbus.exceptions.DBusException as error:

424

396

if (error.get_dbus_name()

425

397

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

426

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

398

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

427

399

return self.rename(remove=False)

428

400

else:

429

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

401

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

430

402

self.cleanup()

431

403

os._exit(1)

432

404

448

420

avahi.DBUS_INTERFACE_ENTRY_GROUP)

449

421

self.entry_group_state_changed_match = (

450

422

self.group.connect_to_signal(

451

"StateChanged", self.entry_group_state_changed))

452

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

453

self.name, self.type)

423

'StateChanged', self.entry_group_state_changed))

424

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

425

self.name, self.type)

454

426

self.group.AddService(

455

427

self.interface,

456

428

self.protocol,

463

435

464

436

def entry_group_state_changed(self, state, error):

465

437

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

466

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

438

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

467

439

468

440

if state == avahi.ENTRY_GROUP_ESTABLISHED:

469

log.debug("Zeroconf service established.")

441

logger.debug("Zeroconf service established.")

470

442

elif state == avahi.ENTRY_GROUP_COLLISION:

471

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

443

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

472

444

self.rename()

473

445

elif state == avahi.ENTRY_GROUP_FAILURE:

474

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

475

str(error))

446

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

447

str(error))

476

448

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

477

449

478

450

def cleanup(self):

488

460

489

461

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

490

462

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

491

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

463

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

492

464

bad_states = {

493

465

avahi.SERVER_INVALID: "Zeroconf server invalid",

494

466

avahi.SERVER_REGISTERING: None,

498

470

if state in bad_states:

499

471

if bad_states[state] is not None:

500

472

if error is None:

501

log.error(bad_states[state])

473

logger.error(bad_states[state])

502

474

else:

503

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

475

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

504

476

self.cleanup()

505

477

elif state == avahi.SERVER_RUNNING:

506

478

try:

508

480

except dbus.exceptions.DBusException as error:

509

481

if (error.get_dbus_name()

510

482

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

511

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

483

logger.info("Local Zeroconf service name"

484

" collision.")

512

485

return self.rename(remove=False)

513

486

else:

514

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

487

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

515

488

self.cleanup()

516

489

os._exit(1)

517

490

else:

518

491

if error is None:

519

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

492

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

520

493

else:

521

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

494

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

522

495

523

496

def activate(self):

524

497

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

536

509

class AvahiServiceToSyslog(AvahiService):

537

510

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

538

511

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

539

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

540

**kwargs)

512

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

541

513

syslogger.setFormatter(logging.Formatter(

542

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

514

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

543

515

.format(self.name)))

544

516

return ret

545

517

575

547

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

576

548

577

549

# Types

578

class _session_int(ctypes.Structure):

550

class session_int(ctypes.Structure):

579

551

_fields_ = []

580

session_t = ctypes.POINTER(_session_int)

552

session_t = ctypes.POINTER(session_int)

581

553

582

554

class certificate_credentials_st(ctypes.Structure):

583

555

_fields_ = []

586

558

certificate_type_t = ctypes.c_int

587

559

588

560

class datum_t(ctypes.Structure):

589

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

590

("size", ctypes.c_uint)]

561

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

562

('size', ctypes.c_uint)]

591

563

592

class _openpgp_crt_int(ctypes.Structure):

564

class openpgp_crt_int(ctypes.Structure):

593

565

_fields_ = []

594

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

566

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

595

567

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

596

568

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

597

569

credentials_type_t = ctypes.c_int

606

578

# gnutls.strerror()

607

579

self.code = code

608

580

if message is None and code is not None:

609

message = gnutls.strerror(code).decode(

610

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

581

message = gnutls.strerror(code)

611

582

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

612

583

message, *args)

613

584

614

585

class CertificateSecurityError(Error):

615

586

pass

616

587

617

class PointerTo:

618

def __init__(self, cls):

619

self.cls = cls

620

621

def from_param(self, obj):

622

if not isinstance(obj, self.cls):

623

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

624

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

625

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

626

627

class CastToVoidPointer:

628

def __init__(self, cls):

629

self.cls = cls

630

631

def from_param(self, obj):

632

if not isinstance(obj, self.cls):

633

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

634

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

635

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

636

637

class With_from_param:

638

@classmethod

639

def from_param(cls, obj):

640

return obj._as_parameter_

641

642

588

# Classes

643

class Credentials(With_from_param):

589

class Credentials:

644

590

def __init__(self):

645

self._as_parameter_ = gnutls.certificate_credentials_t()

646

gnutls.certificate_allocate_credentials(self)

591

self._c_object = gnutls.certificate_credentials_t()

592

gnutls.certificate_allocate_credentials(

593

ctypes.byref(self._c_object))

647

594

self.type = gnutls.CRD_CERTIFICATE

648

595

649

596

def __del__(self):

650

gnutls.certificate_free_credentials(self)

597

gnutls.certificate_free_credentials(self._c_object)

651

598

652

class ClientSession(With_from_param):

599

class ClientSession:

653

600

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

654

self._as_parameter_ = gnutls.session_t()

601

self._c_object = gnutls.session_t()

655

602

gnutls_flags = gnutls.CLIENT

656

603

if gnutls.check_version(b"3.5.6"):

657

604

gnutls_flags |= gnutls.NO_TICKETS

658

605

if gnutls.has_rawpk:

659

606

gnutls_flags |= gnutls.ENABLE_RAWPK

660

gnutls.init(self, gnutls_flags)

607

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

661

608

del gnutls_flags

662

gnutls.set_default_priority(self)

663

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

664

gnutls.handshake_set_private_extensions(self, True)

609

gnutls.set_default_priority(self._c_object)

610

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

611

gnutls.handshake_set_private_extensions(self._c_object,

612

True)

665

613

self.socket = socket

666

614

if credentials is None:

667

615

credentials = gnutls.Credentials()

668

gnutls.credentials_set(self, credentials.type,

669

credentials)

616

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

617

ctypes.cast(credentials._c_object,

618

ctypes.c_void_p))

670

619

self.credentials = credentials

671

620

672

621

def __del__(self):

673

gnutls.deinit(self)

622

gnutls.deinit(self._c_object)

674

623

675

624

def handshake(self):

676

return gnutls.handshake(self)

625

return gnutls.handshake(self._c_object)

677

626

678

627

def send(self, data):

679

628

data = bytes(data)

680

629

data_len = len(data)

681

630

while data_len > 0:

682

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

631

data_len -= gnutls.record_send(self._c_object,

632

data[-data_len:],

683

633

data_len)

684

634

685

635

def bye(self):

686

return gnutls.bye(self, gnutls.SHUT_RDWR)

636

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

687

637

688

638

# Error handling functions

689

639

def _error_code(result):

690

640

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

691

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

692

if result >= gnutls.E_SUCCESS:

641

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

642

if result >= 0:

693

643

return result

694

644

if result == gnutls.E_NO_CERTIFICATE_FOUND:

695

645

raise gnutls.CertificateSecurityError(code=result)

696

646

raise gnutls.Error(code=result)

697

647

698

def _retry_on_error(result, func, arguments,

699

_error_code=_error_code):

648

def _retry_on_error(result, func, arguments):

700

649

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

701

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

702

while result < gnutls.E_SUCCESS:

650

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

651

while result < 0:

703

652

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

704

653

return _error_code(result)

705

654

result = func(*arguments)

710

659

711

660

# Functions

712

661

priority_set_direct = _library.gnutls_priority_set_direct

713

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

662

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

714

663

ctypes.POINTER(ctypes.c_char_p)]

715

664

priority_set_direct.restype = _error_code

716

665

717

666

init = _library.gnutls_init

718

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

667

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

719

668

init.restype = _error_code

720

669

721

670

set_default_priority = _library.gnutls_set_default_priority

722

set_default_priority.argtypes = [ClientSession]

671

set_default_priority.argtypes = [session_t]

723

672

set_default_priority.restype = _error_code

724

673

725

674

record_send = _library.gnutls_record_send

726

record_send.argtypes = [ClientSession, ctypes.c_void_p,

675

record_send.argtypes = [session_t, ctypes.c_void_p,

727

676

ctypes.c_size_t]

728

677

record_send.restype = ctypes.c_ssize_t

729

678

record_send.errcheck = _retry_on_error

731

680

certificate_allocate_credentials = (

732

681

_library.gnutls_certificate_allocate_credentials)

733

682

certificate_allocate_credentials.argtypes = [

734

PointerTo(Credentials)]

683

ctypes.POINTER(certificate_credentials_t)]

735

684

certificate_allocate_credentials.restype = _error_code

736

685

737

686

certificate_free_credentials = (

738

687

_library.gnutls_certificate_free_credentials)

739

certificate_free_credentials.argtypes = [Credentials]

688

certificate_free_credentials.argtypes = [

689

certificate_credentials_t]

740

690

certificate_free_credentials.restype = None

741

691

742

692

handshake_set_private_extensions = (

743

693

_library.gnutls_handshake_set_private_extensions)

744

handshake_set_private_extensions.argtypes = [ClientSession,

694

handshake_set_private_extensions.argtypes = [session_t,

745

695

ctypes.c_int]

746

696

handshake_set_private_extensions.restype = None

747

697

748

698

credentials_set = _library.gnutls_credentials_set

749

credentials_set.argtypes = [ClientSession, credentials_type_t,

750

CastToVoidPointer(Credentials)]

699

credentials_set.argtypes = [session_t, credentials_type_t,

700

ctypes.c_void_p]

751

701

credentials_set.restype = _error_code

752

702

753

703

strerror = _library.gnutls_strerror

755

705

strerror.restype = ctypes.c_char_p

756

706

757

707

certificate_type_get = _library.gnutls_certificate_type_get

758

certificate_type_get.argtypes = [ClientSession]

708

certificate_type_get.argtypes = [session_t]

759

709

certificate_type_get.restype = _error_code

760

710

761

711

certificate_get_peers = _library.gnutls_certificate_get_peers

762

certificate_get_peers.argtypes = [ClientSession,

712

certificate_get_peers.argtypes = [session_t,

763

713

ctypes.POINTER(ctypes.c_uint)]

764

714

certificate_get_peers.restype = ctypes.POINTER(datum_t)

765

715

772

722

global_set_log_function.restype = None

773

723

774

724

deinit = _library.gnutls_deinit

775

deinit.argtypes = [ClientSession]

725

deinit.argtypes = [session_t]

776

726

deinit.restype = None

777

727

778

728

handshake = _library.gnutls_handshake

779

handshake.argtypes = [ClientSession]

780

handshake.restype = ctypes.c_int

729

handshake.argtypes = [session_t]

730

handshake.restype = _error_code

781

731

handshake.errcheck = _retry_on_error

782

732

783

733

transport_set_ptr = _library.gnutls_transport_set_ptr

784

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

734

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

785

735

transport_set_ptr.restype = None

786

736

787

737

bye = _library.gnutls_bye

788

bye.argtypes = [ClientSession, close_request_t]

789

bye.restype = ctypes.c_int

738

bye.argtypes = [session_t, close_request_t]

739

bye.restype = _error_code

790

740

bye.errcheck = _retry_on_error

791

741

792

742

check_version = _library.gnutls_check_version

809

759

810

760

x509_crt_fmt_t = ctypes.c_int

811

761

812

# All the function declarations below are from

813

# gnutls/abstract.h

762

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

814

763

pubkey_init = _library.gnutls_pubkey_init

815

764

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

816

765

pubkey_init.restype = _error_code

830

779

pubkey_deinit.argtypes = [pubkey_t]

831

780

pubkey_deinit.restype = None

832

781

else:

833

# All the function declarations below are from

834

# gnutls/openpgp.h

782

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

835

783

836

784

openpgp_crt_init = _library.gnutls_openpgp_crt_init

837

785

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

843

791

openpgp_crt_fmt_t]

844

792

openpgp_crt_import.restype = _error_code

845

793

846

openpgp_crt_verify_self = \

847

_library.gnutls_openpgp_crt_verify_self

848

openpgp_crt_verify_self.argtypes = [

849

openpgp_crt_t,

850

ctypes.c_uint,

851

ctypes.POINTER(ctypes.c_uint),

852

]

794

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

795

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

796

ctypes.POINTER(ctypes.c_uint)]

853

797

openpgp_crt_verify_self.restype = _error_code

854

798

855

799

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

866

810

867

811

if check_version(b"3.6.4"):

868

812

certificate_type_get2 = _library.gnutls_certificate_type_get2

869

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

813

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

870

814

certificate_type_get2.restype = _error_code

871

815

872

816

# Remove non-public functions

888

832

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

889

833

890

834

Attributes:

891

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

835

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

892

836

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

893

837

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

894

838

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

895

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

839

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

896

840

running.

897

841

checker_callback_tag: a GLib event source tag, or None

898

842

checker_command: string; External command which is run to check

974

918

# key_id() and fingerprint() functions

975

919

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

976

920

.replace(" ", ""))

977

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

978

"").upper()

921

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

979

922

.replace(" ", ""))

980

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

981

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

982

" fingerprint", client_name)

983

del settings[client_name]

984

continue

985

923

if "secret" in section:

986

924

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

987

925

.encode("utf-8"),

1028

966

self.last_enabled = None

1029

967

self.expires = None

1030

968

1031

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

1032

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

1033

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

969

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

970

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

971

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

1034

972

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

1035

973

datetime.datetime.utcnow())

1036

974

1064

1002

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

1065

1003

# Already enabled

1066

1004

return

1005

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

1067

1006

self.enabled = True

1068

1007

self.last_enabled = datetime.datetime.utcnow()

1069

1008

self.init_checker()

1074

1013

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

1075

1014

return False

1076

1015

if not quiet:

1077

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

1016

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

1078

1017

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

1079

1018

GLib.source_remove(self.disable_initiator_tag)

1080

1019

self.disable_initiator_tag = None

1092

1031

def __del__(self):

1093

1032

self.disable()

1094

1033

1095

def init_checker(self, randomize_start=False):

1096

# Schedule a new checker to be started a randomly selected

1097

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

1098

# the startup of checkers over time when the server is

1099

# started.

1034

def init_checker(self):

1035

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

1036

# and every interval from then on.

1100

1037

if self.checker_initiator_tag is not None:

1101

1038

GLib.source_remove(self.checker_initiator_tag)

1102

interval_milliseconds = int(self.interval.total_seconds()

1103

* 1000)

1104

if randomize_start:

1105

delay_milliseconds = random.randrange(

1106

interval_milliseconds + 1)

1107

else:

1108

delay_milliseconds = interval_milliseconds

1109

1039

self.checker_initiator_tag = GLib.timeout_add(

1110

delay_milliseconds, self.start_checker, randomize_start)

1111

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

1112

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

1113

# expire at the soonest one interval after a checker was

1114

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

1115

# time might have to be extended.

1116

now = datetime.datetime.utcnow()

1117

self.expires = now + delay + self.interval

1118

# Schedule a disable() at expire time

1040

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

1041

self.start_checker)

1042

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

1119

1043

if self.disable_initiator_tag is not None:

1120

1044

GLib.source_remove(self.disable_initiator_tag)

1121

1045

self.disable_initiator_tag = GLib.timeout_add(

1122

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

1123

self.disable)

1046

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

1047

# Also start a new checker *right now*.

1048

self.start_checker()

1124

1049

1125

1050

def checker_callback(self, source, condition, connection,

1126

1051

command):

1128

1053

# Read return code from connection (see call_pipe)

1129

1054

returncode = connection.recv()

1130

1055

connection.close()

1131

if self.checker is not None:

1132

self.checker.join()

1056

self.checker.join()

1133

1057

self.checker_callback_tag = None

1134

1058

self.checker = None

1135

1059

1137

1061

self.last_checker_status = returncode

1138

1062

self.last_checker_signal = None

1139

1063

if self.last_checker_status == 0:

1140

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

1064

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

1065

vars(self))

1141

1066

self.checked_ok()

1142

1067

else:

1143

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

1068

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

1144

1069

else:

1145

1070

self.last_checker_status = -1

1146

1071

self.last_checker_signal = -returncode

1147

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

1072

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

1073

vars(self))

1148

1074

return False

1149

1075

1150

1076

def checked_ok(self):

1169

1095

def need_approval(self):

1170

1096

self.last_approval_request = datetime.datetime.utcnow()

1171

1097

1172

def start_checker(self, start_was_randomized=False):

1098

def start_checker(self):

1173

1099

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

1174

1100

1175

1101

If a checker already exists, leave it running and do

1184

1110

# should be.

1185

1111

1186

1112

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

1187

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

1113

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

1188

1114

self.checker.join()

1189

1115

self.checker = None

1190

1116

# Start a new checker if needed

1191

1117

if self.checker is None:

1192

1118

# Escape attributes for the shell

1193

1119

escaped_attrs = {

1194

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

1120

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

1195

1121

for attr in self.runtime_expansions}

1196

1122

try:

1197

1123

command = self.checker_command % escaped_attrs

1198

1124

except TypeError as error:

1199

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

1200

self.checker_command, exc_info=error)

1125

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

1126

self.checker_command,

1127

exc_info=error)

1201

1128

return True # Try again later

1202

1129

self.current_checker_command = command

1203

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

1130

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

1131

self.name)

1204

1132

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

1205

1133

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

1206

1134

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

1225

1153

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

1226

1154

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1227

1155

self.checker_callback, pipe[0], command)

1228

if start_was_randomized:

1229

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

1230

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

1231

# interval from then on.

1232

now = datetime.datetime.utcnow()

1233

self.checker_initiator_tag = GLib.timeout_add(

1234

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

1235

self.start_checker)

1236

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

1237

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

1238

return False

1239

1156

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

1240

1157

return True

1241

1158

1246

1163

self.checker_callback_tag = None

1247

1164

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

1248

1165

return

1249

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

1166

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

1250

1167

self.checker.terminate()

1251

1168

self.checker = None

1252

1169

1279

1196

func._dbus_name = func.__name__

1280

1197

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

1281

1198

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

1282

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1199

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1283

1200

return func

1284

1201

1285

1202

return decorator

1374

1291

1375

1292

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1376

1293

out_signature="s",

1377

path_keyword="object_path",

1378

connection_keyword="connection")

1294

path_keyword='object_path',

1295

connection_keyword='connection')

1379

1296

def Introspect(self, object_path, connection):

1380

1297

"""Overloading of standard D-Bus method.

1381

1298

1430

1347

document.unlink()

1431

1348

except (AttributeError, xml.dom.DOMException,

1432

1349

xml.parsers.expat.ExpatError) as error:

1433

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

1434

exc_info=error)

1350

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

1351

exc_info=error)

1435

1352

return xmlstring

1436

1353

1437

1354

1495

1412

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

1496

1413

"'ay' signature {!r}"

1497

1414

.format(prop._dbus_signature))

1498

value = dbus.ByteArray(bytes(value))

1415

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

1416

for byte in value))

1499

1417

prop(value)

1500

1418

1501

1419

@dbus.service.method(dbus.PROPERTIES_IFACE,

1534

1452

1535

1453

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1536

1454

out_signature="s",

1537

path_keyword="object_path",

1538

connection_keyword="connection")

1455

path_keyword='object_path',

1456

connection_keyword='connection')

1539

1457

def Introspect(self, object_path, connection):

1540

1458

"""Overloading of standard D-Bus method.

1541

1459

1597

1515

document.unlink()

1598

1516

except (AttributeError, xml.dom.DOMException,

1599

1517

xml.parsers.expat.ExpatError) as error:

1600

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

1601

exc_info=error)

1518

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

1519

exc_info=error)

1602

1520

return xmlstring

1603

1521

1604

1522

1636

1554

1637

1555

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1638

1556

out_signature="s",

1639

path_keyword="object_path",

1640

connection_keyword="connection")

1557

path_keyword='object_path',

1558

connection_keyword='connection')

1641

1559

def Introspect(self, object_path, connection):

1642

1560

"""Overloading of standard D-Bus method.

1643

1561

1668

1586

document.unlink()

1669

1587

except (AttributeError, xml.dom.DOMException,

1670

1588

xml.parsers.expat.ExpatError) as error:

1671

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

1672

exc_info=error)

1589

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

1590

exc_info=error)

1673

1591

return xmlstring

1674

1592

1675

1593

2309

2227

class ProxyClient:

2310

2228

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

2311

2229

self._pipe = child_pipe

2312

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

2230

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

2313

2231

if not self._pipe.recv():

2314

2232

raise KeyError(key_id or fpr)

2315

2233

2316

2234

def __getattribute__(self, name):

2317

if name == "_pipe":

2235

if name == '_pipe':

2318

2236

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

2319

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

2237

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

2320

2238

data = self._pipe.recv()

2321

if data[0] == "data":

2239

if data[0] == 'data':

2322

2240

return data[1]

2323

if data[0] == "function":

2241

if data[0] == 'function':

2324

2242

2325

2243

def func(*args, **kwargs):

2326

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

2244

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

2327

2245

return self._pipe.recv()[1]

2328

2246

2329

2247

return func

2330

2248

2331

2249

def __setattr__(self, name, value):

2332

if name == "_pipe":

2250

if name == '_pipe':

2333

2251

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

2334

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

2252

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

2335

2253

2336

2254

2337

2255

class ClientHandler(socketserver.BaseRequestHandler, object):

2342

2260

2343

2261

def handle(self):

2344

2262

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

2345

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

2346

str(self.client_address))

2347

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

2263

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

2264

str(self.client_address))

2265

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

2266

self.server.child_pipe.fileno())

2348

2267

2349

2268

session = gnutls.ClientSession(self.request)

2350

2269

2351

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

2270

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

2352

2271

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

2353

2272

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

2354

2273

# "+DHE-DSS"))

2356

2275

priority = self.server.gnutls_priority

2357

2276

if priority is None:

2358

2277

priority = "NORMAL"

2359

gnutls.priority_set_direct(session,

2360

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

2278

gnutls.priority_set_direct(session._c_object,

2279

priority.encode("utf-8"),

2280

None)

2361

2281

2362

2282

# Start communication using the Mandos protocol

2363

2283

# Get protocol number

2364

2284

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

2365

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

2285

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

2366

2286

try:

2367

2287

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

2368

2288

raise RuntimeError(line)

2369

2289

except (ValueError, IndexError, RuntimeError) as error:

2370

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

2290

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

2371

2291

return

2372

2292

2373

2293

# Start GnuTLS connection

2374

2294

try:

2375

2295

session.handshake()

2376

2296

except gnutls.Error as error:

2377

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

2297

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

2378

2298

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

2379

2299

# established. Just abandon the request.

2380

2300

return

2381

log.debug("Handshake succeeded")

2301

logger.debug("Handshake succeeded")

2382

2302

2383

2303

approval_required = False

2384

2304

try:

2388

2308

key_id = self.key_id(

2389

2309

self.peer_certificate(session))

2390

2310

except (TypeError, gnutls.Error) as error:

2391

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

2311

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

2392

2312

return

2393

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

2394

key_id.decode("utf-8",

2395

errors="replace"))

2313

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

2396

2314

2397

2315

else:

2398

2316

key_id = b""

2400

2318

fpr = self.fingerprint(

2401

2319

self.peer_certificate(session))

2402

2320

except (TypeError, gnutls.Error) as error:

2403

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

2321

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

2404

2322

return

2405

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

2323

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

2406

2324

2407

2325

try:

2408

2326

client = ProxyClient(child_pipe, key_id, fpr,

2417

2335

2418

2336

while True:

2419

2337

if not client.enabled:

2420

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

2338

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

2339

client.name)

2421

2340

if self.server.use_dbus:

2422

2341

# Emit D-Bus signal

2423

2342

client.Rejected("Disabled")

2427

2346

# We are approved or approval is disabled

2428

2347

break

2429

2348

elif client.approved is None:

2430

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

2431

client.name)

2349

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

2350

client.name)

2432

2351

if self.server.use_dbus:

2433

2352

# Emit D-Bus signal

2434

2353

client.NeedApproval(

2435

2354

client.approval_delay.total_seconds()

2436

2355

* 1000, client.approved_by_default)

2437

2356

else:

2438

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

2439

client.name)

2357

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

2358

client.name)

2440

2359

if self.server.use_dbus:

2441

2360

# Emit D-Bus signal

2442

2361

client.Rejected("Denied")

2450

2369

time2 = datetime.datetime.now()

2451

2370

if (time2 - time) >= delay:

2452

2371

if not client.approved_by_default:

2453

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

2454

" waiting for approval",

2455

client.name)

2372

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

2373

" waiting for approval",

2374

client.name)

2456

2375

if self.server.use_dbus:

2457

2376

# Emit D-Bus signal

2458

2377

client.Rejected("Approval timed out")

2465

2384

try:

2466

2385

session.send(client.secret)

2467

2386

except gnutls.Error as error:

2468

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

2387

logger.warning("gnutls send failed",

2388

exc_info=error)

2469

2389

return

2470

2390

2471

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

2391

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

2472

2392

# bump the timeout using extended_timeout

2473

2393

client.bump_timeout(client.extended_timeout)

2474

2394

if self.server.use_dbus:

2481

2401

try:

2482

2402

session.bye()

2483

2403

except gnutls.Error as error:

2484

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

2404

logger.warning("GnuTLS bye failed",

2405

exc_info=error)

2485

2406

2486

2407

@staticmethod

2487

2408

def peer_certificate(session):

2488

2409

"Return the peer's certificate as a bytestring"

2489

2410

try:

2490

cert_type = gnutls.certificate_type_get2(

2491

session, gnutls.CTYPE_PEERS)

2411

cert_type = gnutls.certificate_type_get2(session._c_object,

2412

gnutls.CTYPE_PEERS)

2492

2413

except AttributeError:

2493

cert_type = gnutls.certificate_type_get(session)

2414

cert_type = gnutls.certificate_type_get(session._c_object)

2494

2415

if gnutls.has_rawpk:

2495

2416

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2496

2417

else:

2497

2418

valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))

2498

2419

# If not a valid certificate type...

2499

2420

if cert_type not in valid_cert_types:

2500

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

2501

valid_cert_types)

2421

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

2422

valid_cert_types)

2502

2423

# ...return invalid data

2503

2424

return b""

2504

2425

list_size = ctypes.c_uint(1)

2505

2426

cert_list = (gnutls.certificate_get_peers

2506

(session, ctypes.byref(list_size)))

2427

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

2507

2428

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

2508

2429

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

2509

2430

if list_size.value == 0:

2531

2452

buf = ctypes.create_string_buffer(32)

2532

2453

buf_len = ctypes.c_size_t(len(buf))

2533

2454

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

2534

gnutls.pubkey_get_key_id(

2535

pubkey,

2536

gnutls.KEYID_USE_SHA256,

2537

ctypes.cast(ctypes.byref(buf),

2538

ctypes.POINTER(ctypes.c_ubyte)),

2539

ctypes.byref(buf_len))

2455

gnutls.pubkey_get_key_id(pubkey,

2456

gnutls.KEYID_USE_SHA256,

2457

ctypes.cast(ctypes.byref(buf),

2458

ctypes.POINTER(ctypes.c_ubyte)),

2459

ctypes.byref(buf_len))

2540

2460

# Deinit the certificate

2541

2461

gnutls.pubkey_deinit(pubkey)

2542

2462

2623

2543

2624

2544

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2625

2545

socketserver.TCPServer):

2626

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

2546

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

2627

2547

2628

2548

Attributes:

2629

2549

enabled: Boolean; whether this server is activated yet

2680

2600

if SO_BINDTODEVICE is None:

2681

2601

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

2682

2602

# common enough.

2683

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

2603

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

2684

2604

SO_BINDTODEVICE = 25

2685

2605

try:

2686

2606

self.socket.setsockopt(

2688

2608

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

2689

2609

except socket.error as error:

2690

2610

if error.errno == errno.EPERM:

2691

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

2692

self.interface)

2611

logger.error("No permission to bind to"

2612

" interface %s", self.interface)

2693

2613

elif error.errno == errno.ENOPROTOOPT:

2694

log.error("SO_BINDTODEVICE not available; cannot"

2695

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

2614

logger.error("SO_BINDTODEVICE not available;"

2615

" cannot bind to interface %s",

2616

self.interface)

2696

2617

elif error.errno == errno.ENODEV:

2697

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

2698

" bind", self.interface)

2618

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

2619

" cannot bind", self.interface)

2699

2620

else:

2700

2621

raise

2701

2622

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

2780

2701

request = parent_pipe.recv()

2781

2702

command = request[0]

2782

2703

2783

if command == "init":

2704

if command == 'init':

2784

2705

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

2785

2706

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

2786

2707

address = request[3]

2787

2708

2788

2709

for c in self.clients.values():

2789

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2790

"27AE41E4649B934CA495991B7852B855"):

2710

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2791

2711

continue

2792

2712

if key_id and c.key_id == key_id:

2793

2713

client = c

2796

2716

client = c

2797

2717

break

2798

2718

else:

2799

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

2800

" %s", key_id or fpr, address)

2719

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

2720

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

2801

2721

if self.use_dbus:

2802

2722

# Emit D-Bus signal

2803

2723

mandos_dbus_service.ClientNotFound(key_id or fpr,

2816

2736

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

2817

2737

# same fileno

2818

2738

return False

2819

if command == "funcall":

2739

if command == 'funcall':

2820

2740

funcname = request[1]

2821

2741

args = request[2]

2822

2742

kwargs = request[3]

2823

2743

2824

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

2744

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

2825

2745

funcname)(*args,

2826

2746

**kwargs)))

2827

2747

2828

if command == "getattr":

2748

if command == 'getattr':

2829

2749

attrname = request[1]

2830

2750

if isinstance(client_object.__getattribute__(attrname),

2831

collections.abc.Callable):

2832

parent_pipe.send(("function", ))

2751

collections.Callable):

2752

parent_pipe.send(('function', ))

2833

2753

else:

2834

2754

parent_pipe.send((

2835

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

2755

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

2836

2756

2837

if command == "setattr":

2757

if command == 'setattr':

2838

2758

attrname = request[1]

2839

2759

value = request[2]

2840

2760

setattr(client_object, attrname, value)

2845

2765

def rfc3339_duration_to_delta(duration):

2846

2766

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

2847

2767

2848

>>> timedelta = datetime.timedelta

2849

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

2850

True

2851

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

2852

True

2853

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

2854

True

2855

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

2856

True

2857

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

2858

True

2859

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

2860

True

2861

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

2862

True

2863

>>> del timedelta

2768

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

2769

True

2770

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

2771

True

2772

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

2773

True

2774

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

2775

True

2776

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

2777

True

2778

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

2779

True

2780

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

2781

True

2864

2782

"""

2865

2783

2866

2784

# Parsing an RFC 3339 duration with regular expressions is not

2946

2864

def string_to_delta(interval):

2947

2865

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

2948

2866

2949

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

2950

True

2951

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

2952

True

2953

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

2954

True

2955

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

2956

True

2957

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

2958

True

2959

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

2867

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

2868

True

2869

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

2870

True

2871

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

2872

True

2873

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

2874

True

2875

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

2876

True

2877

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

2960

2878

True

2961

2879

"""

2962

2880

3109

3027

# Later, stdin will, and stdout and stderr might, be dup'ed

3110

3028

# over with an opened os.devnull. But we don't want this to

3111

3029

# happen with a supplied network socket.

3112

while 0 <= server_settings["socket"] <= 2:

3030

if 0 <= server_settings["socket"] <= 2:

3113

3031

server_settings["socket"] = os.dup(server_settings

3114

3032

["socket"])

3115

os.set_inheritable(server_settings["socket"], False)

3116

3033

del server_config

3117

3034

3118

3035

# Override the settings from the config file with command line

3167

3084

3168

3085

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

3169

3086

syslogger.setFormatter(

3170

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

3171

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

3087

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

3088

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

3172

3089

server_settings["servicename"])))

3173

3090

3174

3091

# Parse config file with clients

3198

3115

try:

3199

3116

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

3200

3117

except IOError as e:

3201

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

3202

exc_info=e)

3118

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

3119

exc_info=e)

3203

3120

3204

3121

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

3205

3122

("mandos", "mandos"),

3216

3133

try:

3217

3134

os.setgid(gid)

3218

3135

os.setuid(uid)

3219

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

3136

if debug:

3137

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

3138

gid))

3220

3139

except OSError as error:

3221

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

3222

os.strerror(error.errno))

3140

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

3141

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

3223

3142

if error.errno != errno.EPERM:

3224

3143

raise

3225

3144

3232

3151

3233

3152

@gnutls.log_func

3234

3153

def debug_gnutls(level, string):

3235

log.debug("GnuTLS: %s",

3236

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

3154

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

3237

3155

3238

3156

gnutls.global_set_log_function(debug_gnutls)

3239

3157

3257

3175

# From the Avahi example code

3258

3176

DBusGMainLoop(set_as_default=True)

3259

3177

main_loop = GLib.MainLoop()

3260

if use_dbus or zeroconf:

3261

bus = dbus.SystemBus()

3178

bus = dbus.SystemBus()

3262

3179

# End of Avahi example code

3263

3180

if use_dbus:

3264

3181

try:

3269

3186

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

3270

3187

do_not_queue=True)

3271

3188

except dbus.exceptions.DBusException as e:

3272

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

3189

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

3273

3190

use_dbus = False

3274

3191

server_settings["use_dbus"] = False

3275

3192

tcp_server.use_dbus = False

3334

3251

if isinstance(s, bytes)

3335

3252

else s) for s in

3336

3253

value["client_structure"]]

3337

# .name, .host, and .checker_command

3338

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

3254

# .name & .host

3255

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

3339

3256

if isinstance(value[k], bytes):

3340

3257

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

3341

3258

if "key_id" not in value:

3351

3268

for key, value in

3352

3269

bytes_old_client_settings.items()}

3353

3270

del bytes_old_client_settings

3354

# .host and .checker_command

3271

# .host

3355

3272

for value in old_client_settings.values():

3356

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

3357

if isinstance(value[attribute], bytes):

3358

value[attribute] = (value[attribute]

3359

.decode("utf-8"))

3273

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

3274

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

3275

.decode("utf-8"))

3360

3276

os.remove(stored_state_path)

3361

3277

except IOError as e:

3362

3278

if e.errno == errno.ENOENT:

3363

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

3364

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

3279

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

3280

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

3365

3281

else:

3366

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

3367

exc_info=e)

3282

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

3283

exc_info=e)

3368

3284

raise

3369

3285

except EOFError as e:

3370

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

3371

exc_info=e)

3286

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

3287

"EOFError:",

3288

exc_info=e)

3372

3289

3373

3290

with PGPEngine() as pgp:

3374

3291

for client_name, client in clients_data.items():

3401

3318

if client["enabled"]:

3402

3319

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

3403

3320

if not client["last_checked_ok"]:

3404

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

3405

" never performed a successful"

3406

" checker", client_name)

3321

logger.warning(

3322

"disabling client {} - Client never "

3323

"performed a successful checker".format(

3324

client_name))

3407

3325

client["enabled"] = False

3408

3326

elif client["last_checker_status"] != 0:

3409

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

3410

" last checker failed with error"

3411

" code %s", client_name,

3412

client["last_checker_status"])

3327

logger.warning(

3328

"disabling client {} - Client last"

3329

" checker failed with error code"

3330

" {}".format(

3331

client_name,

3332

client["last_checker_status"]))

3413

3333

client["enabled"] = False

3414

3334

else:

3415

3335

client["expires"] = (

3416

3336

datetime.datetime.utcnow()

3417

3337

+ client["timeout"])

3418

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

3419

" enabled", client_name)

3338

logger.debug("Last checker succeeded,"

3339

" keeping {} enabled".format(

3340

client_name))

3420

3341

try:

3421

3342

client["secret"] = pgp.decrypt(

3422

3343

client["encrypted_secret"],

3423

3344

client_settings[client_name]["secret"])

3424

3345

except PGPError:

3425

3346

# If decryption fails, we use secret from new settings

3426

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

3427

client_name)

3347

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

3348

client_name))

3428

3349

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

3429

3350

["secret"])

3430

3351

3444

3365

server_settings=server_settings)

3445

3366

3446

3367

if not tcp_server.clients:

3447

log.warning("No clients defined")

3368

logger.warning("No clients defined")

3448

3369

3449

3370

if not foreground:

3450

3371

if pidfile is not None:

3453

3374

with pidfile:

3454

3375

print(pid, file=pidfile)

3455

3376

except IOError:

3456

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

3457

pidfilename, pid)

3377

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

3378

pidfilename, pid)

3458

3379

del pidfile

3459

3380

del pidfilename

3460

3381

3610

3531

3611

3532

try:

3612

3533

with tempfile.NamedTemporaryFile(

3613

mode="wb",

3534

mode='wb',

3614

3535

suffix=".pickle",

3615

prefix="clients-",

3536

prefix='clients-',

3616

3537

dir=os.path.dirname(stored_state_path),

3617

3538

delete=False) as stored_state:

3618

3539

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

3626

3547

except NameError:

3627

3548

pass

3628

3549

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

3629

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

3630

os.strerror(e.errno))

3550

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

3551

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

3631

3552

else:

3632

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

3633

exc_info=e)

3553

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

3554

exc_info=e)

3634

3555

raise

3635

3556

3636

3557

# Delete all clients, and settings from config

3653

3574

mandos_dbus_service.client_added_signal(client)

3654

3575

# Need to initiate checking of clients

3655

3576

if client.enabled:

3656

client.init_checker(randomize_start=True)

3577

client.init_checker()

3657

3578

3658

3579

tcp_server.enable()

3659

3580

tcp_server.server_activate()

3662

3583

if zeroconf:

3663

3584

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

3664

3585

if use_ipv6:

3665

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

3666

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

3586

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

3587

" flowinfo %d, scope_id %d",

3588

*tcp_server.socket.getsockname())

3667

3589

else: # IPv4

3668

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

3669

*tcp_server.socket.getsockname())

3590

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

3591

*tcp_server.socket.getsockname())

3670

3592

3671

3593

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

3672

3594

3676

3598

try:

3677

3599

service.activate()

3678

3600

except dbus.exceptions.DBusException as error:

3679

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

3601

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

3680

3602

cleanup()

3681

3603

sys.exit(1)

3682

3604

# End of Avahi example code

3687

3609

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

3688

3610

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

3689

3611

3690

log.debug("Starting main loop")

3612

logger.debug("Starting main loop")

3691

3613

main_loop.run()

3692

3614

except AvahiError as error:

3693

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

3615

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

3694

3616

cleanup()

3695

3617

sys.exit(1)

3696

3618

except KeyboardInterrupt:

3697

3619

if debug:

3698

3620

print("", file=sys.stderr)

3699

log.debug("Server received KeyboardInterrupt")

3700

log.debug("Server exiting")

3621

logger.debug("Server received KeyboardInterrupt")

3622

logger.debug("Server exiting")

3701

3623

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

3702

3624

cleanup()

3703

3625

3704

3626

3705

def parse_test_args():

3706

# type: () -> argparse.Namespace

3627

def should_only_run_tests():

3707

3628

parser = argparse.ArgumentParser(add_help=False)

3708

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

3709

parser.add_argument("--prefix", )

3629

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

3710

3630

args, unknown_args = parser.parse_known_args()

3711

if args.check:

3712

# Remove test options from sys.argv

3631

run_tests = args.check

3632

if run_tests:

3633

# Remove --check argument from sys.argv

3713

3634

sys.argv[1:] = unknown_args

3714

return args

3635

return run_tests

3715

3636

3716

3637

# Add all tests from doctest strings

3717

3638

def load_tests(loader, tests, none):

3719

3640

tests.addTests(doctest.DocTestSuite())

3720

3641

return tests

3721

3642

3722

if __name__ == "__main__":

3723

options = parse_test_args()

3643

if __name__ == '__main__':

3724

3644

try:

3725

if options.check:

3726

extra_test_prefix = options.prefix

3727

if extra_test_prefix is not None:

3728

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

3729

.result.wasSuccessful()):

3730

sys.exit(1)

3731

class ExtraTestLoader(unittest.TestLoader):

3732

testMethodPrefix = extra_test_prefix

3733

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

3734

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

3735

else:

3736

unittest.main(argv=[""])

3645

if should_only_run_tests():

3646

# Call using ./mandos --check [--verbose]

3647

unittest.main()

3737

3648

else:

3738

3649

main()

3739

3650

finally:

3740

3651

logging.shutdown()

3741

3742

# Local Variables:

3743

# run-tests:

3744

# (lambda (&optional extra)

3745

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

3746

# extra))

3747

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

3748

# (funcall remove-test-window)

3749

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

3750

# run-tests-in-test-buffer:

3751

# (lambda (dir &optional extra)

3752

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

3753

# (setq buffer-read-only nil

3754

# default-directory dir)

3755

# (erase-buffer)

3756

# (compilation-mode))

3757

# (let ((process-result

3758

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

3759

# (process-file-shell-command

3760

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

3761

# (and (numberp process-result)

3762

# (= process-result 0))))

3763

# get-command-line:

3764

# (lambda (&optional extra)

3765

# (let ((quoted-script

3766

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

3767

# (format

3768

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

3769

# quoted-script)))

3770

# get-script-name:

3771

# (lambda ()

3772

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

3773

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

3774

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

3775

# (buffer-file-name))))

3776

# remove-test-window:

3777

# (lambda ()

3778

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

3779

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

3780

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

3781

# (lambda ()

3782

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

3783

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

3784

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

3785

# (display-buffer-overriding-action

3786

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

3787

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

3788

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

3789

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

3790

# eval:

3791

# (progn

3792

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

3793

# (funcall run-tests t)))

3794

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

3795

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

3796

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

3797

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

3798

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

3799

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

3800

# End: