/mandos/trunk : revision 518.2.3

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# along with this program. If not, see

29

# <http://www.gnu.org/licenses/>.

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#

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# Contact the authors at <mandos@fukt.bsnet.se>.

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

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#

33

34

from __future__ import (division, absolute_import, print_function,

63

import cPickle as pickle

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import multiprocessing

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import types

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import binascii

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import tempfile

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68

67

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import dbus

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70

import dbus.service

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75

import ctypes.util

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76

import xml.dom.minidom

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77

import inspect

78

import GnuPGInterface

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79

77

80

try:

78

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SO_BINDTODEVICE = socket.SO_BINDTODEVICE

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86

SO_BINDTODEVICE = None

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87

85

88

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version = "1.3.1"

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version = "1.4.1"

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stored_state_file = "clients.pickle"

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91

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

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logger = logging.getLogger()

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93

syslogger = (logging.handlers.SysLogHandler

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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

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95

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

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syslogger.setFormatter(logging.Formatter

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

95

' %(message)s'))

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logger.addHandler(syslogger)

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98

console = logging.StreamHandler()

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console.setFormatter(logging.Formatter('%(name)s [%(process)d]:'

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' %(levelname)s:'

101

' %(message)s'))

102

logger.addHandler(console)

96

97

try:

98

if_nametoindex = (ctypes.cdll.LoadLibrary

99

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

100

.if_nametoindex)

101

except (OSError, AttributeError):

102

def if_nametoindex(interface):

103

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

104

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

105

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

106

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

111

return interface_index

112

113

114

def initlogger(level=logging.WARNING):

115

"""init logger and add loglevel"""

116

117

syslogger.setFormatter(logging.Formatter

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

119

' %(message)s'))

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logger.addHandler(syslogger)

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console = logging.StreamHandler()

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

124

' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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logger.addHandler(console)

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logger.setLevel(level)

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130

131

class CryptoError(Exception):

132

pass

133

134

135

class Crypto(object):

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

137

def __init__(self):

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self.gnupg = GnuPGInterface.GnuPG()

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

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self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

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self.gnupg.options.homedir = self.tempdir

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self.gnupg.options.extra_args.extend(['--force-mdc',

144

'--quiet'])

145

146

def __enter__(self):

147

return self

148

149

def __exit__ (self, exc_type, exc_value, traceback):

150

self._cleanup()

151

return False

152

153

def __del__(self):

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self._cleanup()

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156

def _cleanup(self):

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if self.tempdir is not None:

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# Delete contents of tempdir

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for root, dirs, files in os.walk(self.tempdir,

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topdown = False):

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for filename in files:

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os.remove(os.path.join(root, filename))

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for dirname in dirs:

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os.rmdir(os.path.join(root, dirname))

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# Remove tempdir

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os.rmdir(self.tempdir)

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self.tempdir = None

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def password_encode(self, password):

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

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

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

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def encrypt(self, data, password):

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self.gnupg.passphrase = self.password_encode(password)

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with open(os.devnull) as devnull:

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try:

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proc = self.gnupg.run(['--symmetric'],

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create_fhs=['stdin', 'stdout'],

180

attach_fhs={'stderr': devnull})

181

with contextlib.closing(proc.handles['stdin']) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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ciphertext = f.read()

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proc.wait()

186

except IOError as e:

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raise CryptoError(e)

188

self.gnupg.passphrase = None

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return ciphertext

190

191

def decrypt(self, data, password):

192

self.gnupg.passphrase = self.password_encode(password)

193

with open(os.devnull) as devnull:

194

try:

195

proc = self.gnupg.run(['--decrypt'],

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create_fhs=['stdin', 'stdout'],

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attach_fhs={'stderr': devnull})

198

with contextlib.closing(proc.handles['stdin'] ) as f:

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f.write(data)

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with contextlib.closing(proc.handles['stdout']) as f:

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decrypted_plaintext = f.read()

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proc.wait()

203

except IOError as e:

204

raise CryptoError(e)

205

self.gnupg.passphrase = None

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return decrypted_plaintext

207

208

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class AvahiError(Exception):

105

211

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

160

266

" after %i retries, exiting.",

161

267

self.rename_count)

162

268

raise AvahiServiceError("Too many renames")

163

self.name = unicode(self.server.GetAlternativeServiceName(self.name))

269

self.name = unicode(self.server

270

.GetAlternativeServiceName(self.name))

164

271

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

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self.name)

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syslogger.setFormatter(logging.Formatter

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

168

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

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% self.name))

170

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self.remove()

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try:

172

275

self.add()

192

295

avahi.DBUS_INTERFACE_ENTRY_GROUP)

193

296

self.entry_group_state_changed_match = (

194

297

self.group.connect_to_signal(

195

'StateChanged', self .entry_group_state_changed))

298

'StateChanged', self.entry_group_state_changed))

196

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

197

300

self.name, self.type)

198

301

self.group.AddService(

224

327

try:

225

328

self.group.Free()

226

329

except (dbus.exceptions.UnknownMethodException,

227

dbus.exceptions.DBusException) as e:

330

dbus.exceptions.DBusException):

228

331

pass

229

332

self.group = None

230

333

self.remove()

264

367

self.server_state_changed)

265

368

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

266

369

370

class AvahiServiceToSyslog(AvahiService):

371

def rename(self):

372

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

373

ret = AvahiService.rename(self)

374

syslogger.setFormatter(logging.Formatter

375

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

376

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

377

% self.name))

378

return ret

267

379

268

380

def _timedelta_to_milliseconds(td):

269

381

"Convert a datetime.timedelta() to milliseconds"

288

400

instance %(name)s can be used in the command.

289

401

checker_initiator_tag: a gobject event source tag, or None

290

402

created: datetime.datetime(); (UTC) object creation

403

client_structure: Object describing what attributes a client has

404

and is used for storing the client at exit

291

405

current_checker_command: string; current running checker_command

292

disable_hook: If set, called by disable() as disable_hook(self)

293

406

disable_initiator_tag: a gobject event source tag, or None

294

407

enabled: bool()

295

408

fingerprint: string (40 or 32 hexadecimal digits); used to

298

411

interval: datetime.timedelta(); How often to start a new checker

299

412

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

300

413

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

301

last_enabled: datetime.datetime(); (UTC)

414

415

last_checker_status: integer between 0 and 255 reflecting exit

416

status of last checker. -1 reflects crashed

417

checker, or None.

418

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

302

419

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

303

420

D-Bus identifiers

304

421

secret: bytestring; sent verbatim (over TLS) to client

321

438

322

439

def extended_timeout_milliseconds(self):

323

440

"Return the 'extended_timeout' attribute in milliseconds"

324

return _timedelta_to_milliseconds(self.extended_timeout)

441

return _timedelta_to_milliseconds(self.extended_timeout)

325

442

326

443

def interval_milliseconds(self):

327

444

"Return the 'interval' attribute in milliseconds"

330

447

def approval_delay_milliseconds(self):

331

448

return _timedelta_to_milliseconds(self.approval_delay)

332

449

333

def __init__(self, name = None, disable_hook=None, config=None):

450

def __init__(self, name = None, config=None):

334

451

"""Note: the 'checker' key in 'config' sets the

335

452

'checker_command' attribute and *not* the 'checker'

336

453

attribute."""

356

473

% self.name)

357

474

self.host = config.get("host", "")

358

475

self.created = datetime.datetime.utcnow()

359

self.enabled = False

476

self.enabled = config.get("enabled", True)

360

477

self.last_approval_request = None

361

self.last_enabled = None

478

if self.enabled:

479

self.last_enabled = datetime.datetime.utcnow()

480

else:

481

self.last_enabled = None

362

482

self.last_checked_ok = None

483

self.last_checker_status = None

363

484

self.timeout = string_to_delta(config["timeout"])

364

self.extended_timeout = string_to_delta(config["extended_timeout"])

485

self.extended_timeout = string_to_delta(config

486

["extended_timeout"])

365

487

self.interval = string_to_delta(config["interval"])

366

self.disable_hook = disable_hook

367

488

self.checker = None

368

489

self.checker_initiator_tag = None

369

490

self.disable_initiator_tag = None

370

self.expires = None

491

if self.enabled:

492

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

493

else:

494

self.expires = None

371

495

self.checker_callback_tag = None

372

496

self.checker_command = config["checker"]

373

497

self.current_checker_command = None

374

self.last_connect = None

375

498

self._approved = None

376

499

self.approved_by_default = config.get("approved_by_default",

377

500

True)

380

503

config["approval_delay"])

381

504

self.approval_duration = string_to_delta(

382

505

config["approval_duration"])

383

self.changedstate = multiprocessing_manager.Condition(multiprocessing_manager.Lock())

506

self.changedstate = (multiprocessing_manager

507

.Condition(multiprocessing_manager

508

.Lock()))

509

self.client_structure = [attr for attr in

510

self.__dict__.iterkeys()

511

if not attr.startswith("_")]

512

self.client_structure.append("client_structure")

513

514

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

515

lambda obj:

516

isinstance(obj,

517

property)):

518

if not name.startswith("_"):

519

self.client_structure.append(name)

384

520

521

# Send notice to process children that client state has changed

385

522

def send_changedstate(self):

386

self.changedstate.acquire()

387

self.changedstate.notify_all()

388

self.changedstate.release()

389

523

with self.changedstate:

524

self.changedstate.notify_all()

525

390

526

def enable(self):

391

527

"""Start this client's checker and timeout hooks"""

392

528

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

393

529

# Already enabled

394

530

return

395

531

self.send_changedstate()

396

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

397

# and every interval from then on.

398

self.checker_initiator_tag = (gobject.timeout_add

399

(self.interval_milliseconds(),

400

self.start_checker))

401

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

402

532

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

403

self.disable_initiator_tag = (gobject.timeout_add

404

(self.timeout_milliseconds(),

405

self.disable))

406

533

self.enabled = True

407

534

self.last_enabled = datetime.datetime.utcnow()

408

# Also start a new checker *right now*.

409

self.start_checker()

535

self.init_checker()

410

536

411

537

def disable(self, quiet=True):

412

538

"""Disable this client."""

424

550

gobject.source_remove(self.checker_initiator_tag)

425

551

self.checker_initiator_tag = None

426

552

self.stop_checker()

427

if self.disable_hook:

428

self.disable_hook(self)

429

553

self.enabled = False

430

554

# Do not run this again if called by a gobject.timeout_add

431

555

return False

432

556

433

557

def __del__(self):

434

self.disable_hook = None

435

558

self.disable()

436

559

560

def init_checker(self):

561

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

562

# and every interval from then on.

563

self.checker_initiator_tag = (gobject.timeout_add

564

(self.interval_milliseconds(),

565

self.start_checker))

566

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

567

self.disable_initiator_tag = (gobject.timeout_add

568

(self.timeout_milliseconds(),

569

self.disable))

570

# Also start a new checker *right now*.

571

self.start_checker()

572

437

573

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

438

574

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

439

575

self.checker_callback_tag = None

440

576

self.checker = None

441

577

if os.WIFEXITED(condition):

442

exitstatus = os.WEXITSTATUS(condition)

443

if exitstatus == 0:

578

self.last_checker_status = os.WEXITSTATUS(condition)

579

if self.last_checker_status == 0:

444

580

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

445

581

vars(self))

446

582

self.checked_ok()

448

584

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

449

585

vars(self))

450

586

else:

587

self.last_checker_status = -1

451

588

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

452

589

vars(self))

453

590

460

597

if timeout is None:

461

598

timeout = self.timeout

462

599

self.last_checked_ok = datetime.datetime.utcnow()

463

gobject.source_remove(self.disable_initiator_tag)

464

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

465

self.disable_initiator_tag = (gobject.timeout_add

466

(_timedelta_to_milliseconds(timeout),

467

self.disable))

600

if self.disable_initiator_tag is not None:

601

gobject.source_remove(self.disable_initiator_tag)

602

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

603

self.disable_initiator_tag = (gobject.timeout_add

604

(_timedelta_to_milliseconds

605

(timeout), self.disable))

606

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

468

607

469

608

def need_approval(self):

470

609

self.last_approval_request = datetime.datetime.utcnow()

629

768

"""

630

769

return ((prop.__get__(self)._dbus_name, prop.__get__(self))

631

770

for cls in self.__class__.__mro__

632

for name, prop in inspect.getmembers(cls, self._is_dbus_property))

771

for name, prop in

772

inspect.getmembers(cls, self._is_dbus_property))

633

773

634

774

def _get_dbus_property(self, interface_name, property_name):

635

775

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

636

776

property with the specified name and interface.

637

777

"""

638

778

for cls in self.__class__.__mro__:

639

for name, value in inspect.getmembers(cls, self._is_dbus_property):

640

if value._dbus_name == property_name and value._dbus_interface == interface_name:

779

for name, value in (inspect.getmembers

780

(cls, self._is_dbus_property)):

781

if (value._dbus_name == property_name

782

and value._dbus_interface == interface_name):

641

783

return value.__get__(self)

642

784

643

785

# No such property

644

786

raise DBusPropertyNotFound(self.dbus_object_path + ":"

645

787

+ interface_name + "."

646

788

+ property_name)

647

648

789

649

790

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

650

791

out_signature="v")

683

824

684

825

Note: Will not include properties with access="write".

685

826

"""

686

all = {}

827

properties = {}

687

828

for name, prop in self._get_all_dbus_properties():

688

829

if (interface_name

689

830

and interface_name != prop._dbus_interface):

694

835

continue

695

836

value = prop()

696

837

if not hasattr(value, "variant_level"):

697

all[name] = value

838

properties[name] = value

698

839

continue

699

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

700

value.variant_level+1)

701

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

840

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

841

value.variant_level+1)

842

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

702

843

703

844

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

704

845

out_signature="s",

755

896

return dbus.String(dt.isoformat(),

756

897

variant_level=variant_level)

757

898

758

class transitional_dbus_metaclass(DBusObjectWithProperties.__metaclass__):

899

900

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

901

.__metaclass__):

902

"""Applied to an empty subclass of a D-Bus object, this metaclass

903

will add additional D-Bus attributes matching a certain pattern.

904

"""

759

905

def __new__(mcs, name, bases, attr):

760

for attrname, old_dbusobj in inspect.getmembers(bases[0]):

761

new_interface = getattr(old_dbusobj, "_dbus_interface", "").replace("se.bsnet.fukt.", "se.recompile.")

762

if (getattr(old_dbusobj, "_dbus_is_signal", False)

763

and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):

764

unwrappedfunc = dict(zip(old_dbusobj.func_code.co_freevars,

765

old_dbusobj.__closure__))["func"].cell_contents

766

newfunc = types.FunctionType(unwrappedfunc.func_code,

767

unwrappedfunc.func_globals,

768

unwrappedfunc.func_name,

769

unwrappedfunc.func_defaults,

770

unwrappedfunc.func_closure)

771

new_dbusfunc = dbus.service.signal(

772

new_interface, old_dbusobj._dbus_signature)(newfunc)

773

attr["_transitional_" + attrname] = new_dbusfunc

774

775

def fixscope(func1, func2):

776

def newcall(*args, **kwargs):

777

func1(*args, **kwargs)

778

func2(*args, **kwargs)

779

return newcall

780

781

attr[attrname] = fixscope(old_dbusobj, new_dbusfunc)

782

783

elif (getattr(old_dbusobj, "_dbus_is_method", False)

784

and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):

785

new_dbusfunc = (dbus.service.method

786

(new_interface,

787

old_dbusobj._dbus_in_signature,

788

old_dbusobj._dbus_out_signature)

789

(types.FunctionType

790

(old_dbusobj.func_code,

791

old_dbusobj.func_globals,

792

old_dbusobj.func_name,

793

old_dbusobj.func_defaults,

794

old_dbusobj.func_closure)))

795

796

attr[attrname] = new_dbusfunc

797

elif (getattr(old_dbusobj, "_dbus_is_property", False)

798

and old_dbusobj._dbus_interface.startswith("se.bsnet.fukt.Mandos")):

799

new_dbusfunc = (dbus_service_property

800

(new_interface,

801

old_dbusobj._dbus_signature,

802

old_dbusobj._dbus_access,

803

old_dbusobj._dbus_get_args_options["byte_arrays"])

804

(types.FunctionType

805

(old_dbusobj.func_code,

806

old_dbusobj.func_globals,

807

old_dbusobj.func_name,

808

old_dbusobj.func_defaults,

809

old_dbusobj.func_closure)))

810

811

attr[attrname] = new_dbusfunc

906

# Go through all the base classes which could have D-Bus

907

# methods, signals, or properties in them

908

for base in (b for b in bases

909

if issubclass(b, dbus.service.Object)):

910

# Go though all attributes of the base class

911

for attrname, attribute in inspect.getmembers(base):

912

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

913

# with the wrong interface name

914

if (not hasattr(attribute, "_dbus_interface")

915

or not attribute._dbus_interface

916

.startswith("se.recompile.Mandos")):

917

continue

918

# Create an alternate D-Bus interface name based on

919

# the current name

920

alt_interface = (attribute._dbus_interface

921

.replace("se.recompile.Mandos",

922

"se.bsnet.fukt.Mandos"))

923

# Is this a D-Bus signal?

924

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

925

# Extract the original non-method function by

926

# black magic

927

nonmethod_func = (dict(

928

zip(attribute.func_code.co_freevars,

929

attribute.__closure__))["func"]

930

.cell_contents)

931

# Create a new, but exactly alike, function

932

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

933

# with the alternate D-Bus interface name

934

new_function = (dbus.service.signal

935

(alt_interface,

936

attribute._dbus_signature)

937

(types.FunctionType(

938

nonmethod_func.func_code,

939

nonmethod_func.func_globals,

940

nonmethod_func.func_name,

941

nonmethod_func.func_defaults,

942

nonmethod_func.func_closure)))

943

# Define a creator of a function to call both the

944

# old and new functions, so both the old and new

945

# signals gets sent when the function is called

946

def fixscope(func1, func2):

947

"""This function is a scope container to pass

948

func1 and func2 to the "call_both" function

949

outside of its arguments"""

950

def call_both(*args, **kwargs):

951

"""This function will emit two D-Bus

952

signals by calling func1 and func2"""

953

func1(*args, **kwargs)

954

func2(*args, **kwargs)

955

return call_both

956

# Create the "call_both" function and add it to

957

# the class

958

attr[attrname] = fixscope(attribute,

959

new_function)

960

# Is this a D-Bus method?

961

elif getattr(attribute, "_dbus_is_method", False):

962

# Create a new, but exactly alike, function

963

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

964

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

965

# to the class.

966

attr[attrname] = (dbus.service.method

967

(alt_interface,

968

attribute._dbus_in_signature,

969

attribute._dbus_out_signature)

970

(types.FunctionType

971

(attribute.func_code,

972

attribute.func_globals,

973

attribute.func_name,

974

attribute.func_defaults,

975

attribute.func_closure)))

976

# Is this a D-Bus property?

977

elif getattr(attribute, "_dbus_is_property", False):

978

# Create a new, but exactly alike, function

979

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

980

# property with the alternate D-Bus interface

981

# name. Add it to the class.

982

attr[attrname] = (dbus_service_property

983

(alt_interface,

984

attribute._dbus_signature,

985

attribute._dbus_access,

986

attribute

987

._dbus_get_args_options

988

["byte_arrays"])

989

(types.FunctionType

990

(attribute.func_code,

991

attribute.func_globals,

992

attribute.func_name,

993

attribute.func_defaults,

994

attribute.func_closure)))

812

995

return type.__new__(mcs, name, bases, attr)

813

996

997

814

998

class ClientDBus(Client, DBusObjectWithProperties):

815

999

"""A Client class using D-Bus

816

1000

825

1009

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

826

1010

827

1011

def __init__(self, bus = None, *args, **kwargs):

1012

self.bus = bus

1013

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

1014

828

1015

self._approvals_pending = 0

829

self.bus = bus

830

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

831

1016

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

832

1017

# the D-Bus

833

1018

client_object_name = unicode(self.name).translate(

841

1026

def notifychangeproperty(transform_func,

842

1027

dbus_name, type_func=lambda x: x,

843

1028

variant_level=1):

844

""" Modify a variable so that its a property that announce its

845

changes to DBus.

846

transform_fun: Function that takes a value and transform it to

847

DBus type.

848

dbus_name: DBus name of the variable

1029

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

1030

its changes to DBus.

1031

1032

transform_fun: Function that takes a value and a variant_level

1033

and transforms it to a D-Bus type.

1034

dbus_name: D-Bus name of the variable

849

1035

type_func: Function that transform the value before sending it

850

to DBus

851

variant_level: DBus variant level. default: 1

1036

to the D-Bus. Default: no transform

1037

variant_level: D-Bus variant level. Default: 1

852

1038

"""

853

real_value = [None,]

1039

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

854

1040

def setter(self, value):

855

old_value = real_value[0]

856

real_value[0] = value

857

1041

if hasattr(self, "dbus_object_path"):

858

if type_func(old_value) != type_func(real_value[0]):

859

dbus_value = transform_func(type_func(real_value[0]),

860

variant_level)

1042

if (not hasattr(self, attrname) or

1043

type_func(getattr(self, attrname, None))

1044

!= type_func(value)):

1045

dbus_value = transform_func(type_func(value),

1046

variant_level

1047

=variant_level)

861

1048

self.PropertyChanged(dbus.String(dbus_name),

862

1049

dbus_value)

1050

setattr(self, attrname, value)

863

1051

864

return property(lambda self: real_value[0], setter)

1052

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

865

1053

866

1054

867

1055

expires = notifychangeproperty(datetime_to_dbus, "Expires")

872

1060

last_enabled = notifychangeproperty(datetime_to_dbus,

873

1061

"LastEnabled")

874

1062

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

875

type_func = lambda checker: checker is not None)

1063

type_func = lambda checker:

1064

checker is not None)

876

1065

last_checked_ok = notifychangeproperty(datetime_to_dbus,

877

1066

"LastCheckedOK")

878

last_approval_request = notifychangeproperty(datetime_to_dbus,

879

"LastApprovalRequest")

1067

last_approval_request = notifychangeproperty(

1068

datetime_to_dbus, "LastApprovalRequest")

880

1069

approved_by_default = notifychangeproperty(dbus.Boolean,

881

1070

"ApprovedByDefault")

882

approval_delay = notifychangeproperty(dbus.UInt16, "ApprovalDelay",

883

type_func = _timedelta_to_milliseconds)

884

approval_duration = notifychangeproperty(dbus.UInt16, "ApprovalDuration",

885

type_func = _timedelta_to_milliseconds)

1071

approval_delay = notifychangeproperty(dbus.UInt16,

1072

"ApprovalDelay",

1073

type_func =

1074

_timedelta_to_milliseconds)

1075

approval_duration = notifychangeproperty(

1076

dbus.UInt16, "ApprovalDuration",

1077

type_func = _timedelta_to_milliseconds)

886

1078

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

887

1079

timeout = notifychangeproperty(dbus.UInt16, "Timeout",

888

type_func = _timedelta_to_milliseconds)

889

extended_timeout = notifychangeproperty(dbus.UInt16, "ExtendedTimeout",

890

type_func = _timedelta_to_milliseconds)

891

interval = notifychangeproperty(dbus.UInt16, "Interval",

892

type_func = _timedelta_to_milliseconds)

1080

type_func =

1081

_timedelta_to_milliseconds)

1082

extended_timeout = notifychangeproperty(

1083

dbus.UInt16, "ExtendedTimeout",

1084

type_func = _timedelta_to_milliseconds)

1085

interval = notifychangeproperty(dbus.UInt16,

1086

"Interval",

1087

type_func =

1088

_timedelta_to_milliseconds)

893

1089

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

894

1090

895

1091

del notifychangeproperty

949

1145

950

1146

951

1147

## D-Bus methods, signals & properties

952

_interface = "se.bsnet.fukt.Mandos.Client"

953

1148

_interface = "se.recompile.Mandos.Client"

1149

954

1150

## Signals

955

1151

956

1152

# CheckerCompleted - signal

992

1188

"D-Bus signal"

993

1189

return self.need_approval()

994

1190

1191

# NeRwequest - signal

1192

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

1193

def NewRequest(self, ip):

1194

"""D-Bus signal

1195

Is sent after a client request a password.

1196

"""

1197

pass

1198

995

1199

## Methods

996

1200

997

1201

# Approve - method

1080

1284

# Created - property

1081

1285

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

1082

1286

def Created_dbus_property(self):

1083

return dbus.String(datetime_to_dbus(self.created))

1287

return datetime_to_dbus(self.created)

1084

1288

1085

1289

# LastEnabled - property

1086

1290

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

1130

1334

gobject.source_remove(self.disable_initiator_tag)

1131

1335

self.disable_initiator_tag = None

1132

1336

self.expires = None

1133

time_to_die = (self.

1134

_timedelta_to_milliseconds((self

1135

.last_checked_ok

1136

+ self.timeout)

1137

- datetime.datetime

1138

.utcnow()))

1337

time_to_die = _timedelta_to_milliseconds((self

1338

.last_checked_ok

1339

+ self.timeout)

1340

- datetime.datetime

1341

.utcnow())

1139

1342

if time_to_die <= 0:

1140

1343

# The timeout has passed

1141

1344

self.disable()

1142

1345

else:

1143

1346

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

1144

+ datetime.timedelta(milliseconds = time_to_die))

1347

+ datetime.timedelta(milliseconds =

1348

time_to_die))

1145

1349

self.disable_initiator_tag = (gobject.timeout_add

1146

1350

(time_to_die, self.disable))

1147

1351

1162

1366

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

1163

1367

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

1164

1368

return

1165

# Reschedule checker run

1166

gobject.source_remove(self.checker_initiator_tag)

1167

self.checker_initiator_tag = (gobject.timeout_add

1168

(value, self.start_checker))

1169

self.start_checker() # Start one now, too

1369

if self.enabled:

1370

# Reschedule checker run

1371

gobject.source_remove(self.checker_initiator_tag)

1372

self.checker_initiator_tag = (gobject.timeout_add

1373

(value, self.start_checker))

1374

self.start_checker() # Start one now, too

1170

1375

1171

1376

# Checker - property

1172

1377

@dbus_service_property(_interface, signature="s",

1226

1431

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

1227

1432

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

1228

1433

1434

1229

1435

class ClientDBusTransitional(ClientDBus):

1230

__metaclass__ = transitional_dbus_metaclass

1436

__metaclass__ = AlternateDBusNamesMetaclass

1437

1231

1438

1232

1439

class ClientHandler(socketserver.BaseRequestHandler, object):

1233

1440

"""A class to handle client connections.

1295

1502

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

1296

1503

return

1297

1504

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

1505

if self.server.use_dbus:

1506

# Emit D-Bus signal

1507

client.NewRequest(str(self.client_address))

1298

1508

1299

1509

try:

1300

1510

client = ProxyClient(child_pipe, fpr,

1313

1523

client.name)

1314

1524

if self.server.use_dbus:

1315

1525

# Emit D-Bus signal

1316

client.Rejected("Disabled")

1526

client.Rejected("Disabled")

1317

1527

return

1318

1528

1319

1529

if client._approved or not client.approval_delay:

1336

1546

return

1337

1547

1338

1548

#wait until timeout or approved

1339

#x = float(client._timedelta_to_milliseconds(delay))

1340

1549

time = datetime.datetime.now()

1341

1550

client.changedstate.acquire()

1342

client.changedstate.wait(float(client._timedelta_to_milliseconds(delay) / 1000))

1551

(client.changedstate.wait

1552

(float(client._timedelta_to_milliseconds(delay)

1553

/ 1000)))

1343

1554

client.changedstate.release()

1344

1555

time2 = datetime.datetime.now()

1345

1556

if (time2 - time) >= delay:

1369

1580

sent_size += sent

1370

1581

1371

1582

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

1372

# bump the timeout as if seen

1583

# bump the timeout using extended_timeout

1373

1584

client.checked_ok(client.extended_timeout)

1374

1585

if self.server.use_dbus:

1375

1586

# Emit D-Bus signal

1443

1654

# Convert the buffer to a Python bytestring

1444

1655

fpr = ctypes.string_at(buf, buf_len.value)

1445

1656

# Convert the bytestring to hexadecimal notation

1446

hex_fpr = ''.join("%02X" % ord(char) for char in fpr)

1657

hex_fpr = binascii.hexlify(fpr).upper()

1447

1658

return hex_fpr

1448

1659

1449

1660

1455

1666

except:

1456

1667

self.handle_error(request, address)

1457

1668

self.close_request(request)

1458

1669

1459

1670

def process_request(self, request, address):

1460

1671

"""Start a new process to process the request."""

1461

multiprocessing.Process(target = self.sub_process_main,

1462

args = (request, address)).start()

1672

proc = multiprocessing.Process(target = self.sub_process_main,

1673

args = (request,

1674

address))

1675

proc.start()

1676

return proc

1463

1677

1464

1678

1465

1679

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1471

1685

"""

1472

1686

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1473

1687

1474

super(MultiprocessingMixInWithPipe,

1475

self).process_request(request, client_address)

1688

proc = MultiprocessingMixIn.process_request(self, request,

1689

client_address)

1476

1690

self.child_pipe.close()

1477

self.add_pipe(parent_pipe)

1691

self.add_pipe(parent_pipe, proc)

1478

1692

1479

def add_pipe(self, parent_pipe):

1693

def add_pipe(self, parent_pipe, proc):

1480

1694

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

1481

1695

raise NotImplementedError

1482

1696

1560

1774

self.enabled = False

1561

1775

self.clients = clients

1562

1776

if self.clients is None:

1563

self.clients = set()

1777

self.clients = {}

1564

1778

self.use_dbus = use_dbus

1565

1779

self.gnutls_priority = gnutls_priority

1566

1780

IPv6_TCPServer.__init__(self, server_address,

1570

1784

def server_activate(self):

1571

1785

if self.enabled:

1572

1786

return socketserver.TCPServer.server_activate(self)

1787

1573

1788

def enable(self):

1574

1789

self.enabled = True

1575

def add_pipe(self, parent_pipe):

1790

1791

def add_pipe(self, parent_pipe, proc):

1576

1792

# Call "handle_ipc" for both data and EOF events

1577

1793

gobject.io_add_watch(parent_pipe.fileno(),

1578

1794

gobject.IO_IN | gobject.IO_HUP,

1579

1795

functools.partial(self.handle_ipc,

1580

parent_pipe = parent_pipe))

1581

1796

parent_pipe =

1797

parent_pipe,

1798

proc = proc))

1799

1582

1800

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

1583

client_object=None):

1801

proc = None, client_object=None):

1584

1802

condition_names = {

1585

1803

gobject.IO_IN: "IN", # There is data to read.

1586

1804

gobject.IO_OUT: "OUT", # Data can be written (without

1595

1813

for cond, name in

1596

1814

condition_names.iteritems()

1597

1815

if cond & condition)

1598

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

1816

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

1599

1817

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

1818

# Wait for other process to exit

1819

proc.join()

1600

1820

return False

1601

1821

1602

1822

# Read a request from the child

1607

1827

fpr = request[1]

1608

1828

address = request[2]

1609

1829

1610

for c in self.clients:

1830

for c in self.clients.itervalues():

1611

1831

if c.fingerprint == fpr:

1612

1832

client = c

1613

1833

break

1616

1836

"dress: %s", fpr, address)

1617

1837

if self.use_dbus:

1618

1838

# Emit D-Bus signal

1619

mandos_dbus_service.ClientNotFound(fpr, address[0])

1839

mandos_dbus_service.ClientNotFound(fpr,

1840

address[0])

1620

1841

parent_pipe.send(False)

1621

1842

return False

1622

1843

1623

1844

gobject.io_add_watch(parent_pipe.fileno(),

1624

1845

gobject.IO_IN | gobject.IO_HUP,

1625

1846

functools.partial(self.handle_ipc,

1626

parent_pipe = parent_pipe,

1627

client_object = client))

1847

parent_pipe =

1848

parent_pipe,

1849

proc = proc,

1850

client_object =

1851

client))

1628

1852

parent_pipe.send(True)

1629

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

1853

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

1854

# same fileno

1630

1855

return False

1631

1856

if command == 'funcall':

1632

1857

funcname = request[1]

1633

1858

args = request[2]

1634

1859

kwargs = request[3]

1635

1860

1636

parent_pipe.send(('data', getattr(client_object, funcname)(*args, **kwargs)))

1861

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

1862

funcname)(*args,

1863

**kwargs)))

1637

1864

1638

1865

if command == 'getattr':

1639

1866

attrname = request[1]

1640

1867

if callable(client_object.__getattribute__(attrname)):

1641

1868

parent_pipe.send(('function',))

1642

1869

else:

1643

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

1870

parent_pipe.send(('data', client_object

1871

.__getattribute__(attrname)))

1644

1872

1645

1873

if command == 'setattr':

1646

1874

attrname = request[1]

1689

1917

return timevalue

1690

1918

1691

1919

1692

def if_nametoindex(interface):

1693

"""Call the C function if_nametoindex(), or equivalent

1694

1695

Note: This function cannot accept a unicode string."""

1696

global if_nametoindex

1697

try:

1698

if_nametoindex = (ctypes.cdll.LoadLibrary

1699

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

1700

.if_nametoindex)

1701

except (OSError, AttributeError):

1702

logger.warning("Doing if_nametoindex the hard way")

1703

def if_nametoindex(interface):

1704

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

1705

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

1706

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

1707

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1708

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

1709

interface))

1710

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

1711

ifreq[16:20])[0]

1712

return interface_index

1713

return if_nametoindex(interface)

1714

1715

1716

1920

def daemon(nochdir = False, noclose = False):

1717

1921

"""See daemon(3). Standard BSD Unix function.

1718

1922

1773

1977

" system bus interface")

1774

1978

parser.add_argument("--no-ipv6", action="store_false",

1775

1979

dest="use_ipv6", help="Do not use IPv6")

1980

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

1981

dest="restore", help="Do not restore stored"

1982

" state")

1983

parser.add_argument("--statedir", metavar="DIR",

1984

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

1985

1776

1986

options = parser.parse_args()

1777

1987

1778

1988

if options.check:

1791

2001

"use_dbus": "True",

1792

2002

"use_ipv6": "True",

1793

2003

"debuglevel": "",

2004

"restore": "True",

2005

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

1794

2006

}

1795

2007

1796

2008

# Parse config file for server-global settings

1813

2025

# options, if set.

1814

2026

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

1815

2027

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

1816

"use_dbus", "use_ipv6", "debuglevel"):

2028

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

2029

"statedir"):

1817

2030

value = getattr(options, option)

1818

2031

if value is not None:

1819

2032

server_settings[option] = value

1831

2044

debuglevel = server_settings["debuglevel"]

1832

2045

use_dbus = server_settings["use_dbus"]

1833

2046

use_ipv6 = server_settings["use_ipv6"]

2047

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

2048

stored_state_file)

2049

2050

if debug:

2051

initlogger(logging.DEBUG)

2052

else:

2053

if not debuglevel:

2054

initlogger()

2055

else:

2056

level = getattr(logging, debuglevel.upper())

2057

initlogger(level)

1834

2058

1835

2059

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

1836

2060

syslogger.setFormatter(logging.Formatter

1891

2115

if error[0] != errno.EPERM:

1892

2116

raise error

1893

2117

1894

if not debug and not debuglevel:

1895

syslogger.setLevel(logging.WARNING)

1896

console.setLevel(logging.WARNING)

1897

if debuglevel:

1898

level = getattr(logging, debuglevel.upper())

1899

syslogger.setLevel(level)

1900

console.setLevel(level)

1901

1902

2118

if debug:

1903

2119

# Enable all possible GnuTLS debugging

1904

2120

1935

2151

# End of Avahi example code

1936

2152

if use_dbus:

1937

2153

try:

1938

bus_name = dbus.service.BusName("se.bsnet.fukt.Mandos",

1939

bus, do_not_queue=True)

1940

bus_name2 = dbus.service.BusName("se.recompile.Mandos",

1941

bus, do_not_queue=True)

2154

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

2155

bus, do_not_queue=True)

2156

old_bus_name = (dbus.service.BusName

2157

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

2158

do_not_queue=True))

1942

2159

except dbus.exceptions.NameExistsException as e:

1943

2160

logger.error(unicode(e) + ", disabling D-Bus")

1944

2161

use_dbus = False

1945

2162

server_settings["use_dbus"] = False

1946

2163

tcp_server.use_dbus = False

1947

2164

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

1948

service = AvahiService(name = server_settings["servicename"],

1949

servicetype = "_mandos._tcp",

1950

protocol = protocol, bus = bus)

2165

service = AvahiServiceToSyslog(name =

2166

server_settings["servicename"],

2167

servicetype = "_mandos._tcp",

2168

protocol = protocol, bus = bus)

1951

2169

if server_settings["interface"]:

1952

2170

service.interface = (if_nametoindex

1953

2171

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

1957

2175

1958

2176

client_class = Client

1959

2177

if use_dbus:

1960

client_class = functools.partial(ClientDBusTransitional, bus = bus)

1961

def client_config_items(config, section):

1962

special_settings = {

1963

"approved_by_default":

1964

lambda: config.getboolean(section,

1965

"approved_by_default"),

1966

}

1967

for name, value in config.items(section):

2178

client_class = functools.partial(ClientDBusTransitional,

2179

bus = bus)

2180

2181

special_settings = {

2182

# Some settings need to be accessd by special methods;

2183

# booleans need .getboolean(), etc. Here is a list of them:

2184

"approved_by_default":

2185

lambda section:

2186

client_config.getboolean(section, "approved_by_default"),

2187

"enabled":

2188

lambda section:

2189

client_config.getboolean(section, "enabled"),

2190

}

2191

# Construct a new dict of client settings of this form:

2192

# { client_name: {setting_name: value, ...}, ...}

2193

# with exceptions for any special settings as defined above

2194

client_settings = dict((clientname,

2195

dict((setting,

2196

(value

2197

if setting not in special_settings

2198

else special_settings[setting]

2199

(clientname)))

2200

for setting, value in

2201

client_config.items(clientname)))

2202

for clientname in client_config.sections())

2203

2204

old_client_settings = {}

2205

clients_data = []

2206

2207

# Get client data and settings from last running state.

2208

if server_settings["restore"]:

2209

try:

2210

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

2211

clients_data, old_client_settings = (pickle.load

2212

(stored_state))

2213

os.remove(stored_state_path)

2214

except IOError as e:

2215

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

2216

.format(e))

2217

if e.errno != errno.ENOENT:

2218

raise

2219

2220

with Crypto() as crypt:

2221

for client in clients_data:

2222

client_name = client["name"]

2223

2224

# Decide which value to use after restoring saved state.

2225

# We have three different values: Old config file,

2226

# new config file, and saved state.

2227

# New config value takes precedence if it differs from old

2228

# config value, otherwise use saved state.

2229

for name, value in client_settings[client_name].items():

2230

try:

2231

# For each value in new config, check if it

2232

# differs from the old config value (Except for

2233

# the "secret" attribute)

2234

if (name != "secret" and

2235

value != old_client_settings[client_name]

2236

[name]):

2237

setattr(client, name, value)

2238

except KeyError:

2239

pass

2240

2241

# Clients who has passed its expire date can still be

2242

# enabled if its last checker was sucessful. Clients

2243

# whose checker failed before we stored its state is

2244

# assumed to have failed all checkers during downtime.

2245

if client["enabled"] and client["last_checked_ok"]:

2246

if ((datetime.datetime.utcnow()

2247

- client["last_checked_ok"])

2248

> client["interval"]):

2249

if client["last_checker_status"] != 0:

2250

client["enabled"] = False

2251

else:

2252

client["expires"] = (datetime.datetime

2253

.utcnow()

2254

+ client["timeout"])

2255

2256

client["changedstate"] = (multiprocessing_manager

2257

.Condition

2258

(multiprocessing_manager

2259

.Lock()))

2260

if use_dbus:

2261

new_client = (ClientDBusTransitional.__new__

2262

(ClientDBusTransitional))

2263

tcp_server.clients[client_name] = new_client

2264

new_client.bus = bus

2265

for name, value in client.iteritems():

2266

setattr(new_client, name, value)

2267

client_object_name = unicode(client_name).translate(

2268

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

2269

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

2270

new_client.dbus_object_path = (dbus.ObjectPath

2271

("/clients/"

2272

+ client_object_name))

2273

DBusObjectWithProperties.__init__(new_client,

2274

new_client.bus,

2275

new_client

2276

.dbus_object_path)

2277

else:

2278

tcp_server.clients[client_name] = (Client.__new__

2279

(Client))

2280

for name, value in client.iteritems():

2281

setattr(tcp_server.clients[client_name],

2282

name, value)

2283

1968

2284

try:

1969

yield (name, special_settings[name]())

1970

except KeyError:

1971

yield (name, value)

1972

1973

tcp_server.clients.update(set(

1974

client_class(name = section,

1975

config= dict(client_config_items(

1976

client_config, section)))

1977

for section in client_config.sections()))

2285

tcp_server.clients[client_name].secret = (

2286

crypt.decrypt(tcp_server.clients[client_name]

2287

.encrypted_secret,

2288

client_settings[client_name]

2289

["secret"]))

2290

except CryptoError:

2291

# If decryption fails, we use secret from new settings

2292

tcp_server.clients[client_name].secret = (

2293

client_settings[client_name]["secret"])

2294

2295

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

2296

for clientname in set(old_client_settings) - set(client_settings):

2297

del tcp_server.clients[clientname]

2298

for clientname in set(client_settings) - set(old_client_settings):

2299

tcp_server.clients[clientname] = (client_class(name

2300

= clientname,

2301

config =

2302

client_settings

2303

[clientname]))

2304

1978

2305

if not tcp_server.clients:

1979

2306

logger.warning("No clients defined")

1980

2307

2002

2329

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

2003

2330

def __init__(self):

2004

2331

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

2005

_interface = "se.bsnet.fukt.Mandos"

2332

_interface = "se.recompile.Mandos"

2006

2333

2007

2334

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

2008

2335

def ClientAdded(self, objpath):

2023

2350

def GetAllClients(self):

2024

2351

"D-Bus method"

2025

2352

return dbus.Array(c.dbus_object_path

2026

for c in tcp_server.clients)

2353

for c in

2354

tcp_server.clients.itervalues())

2027

2355

2028

2356

@dbus.service.method(_interface,

2029

2357

out_signature="a{oa{sv}}")

2031

2359

"D-Bus method"

2032

2360

return dbus.Dictionary(

2033

2361

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

2034

for c in tcp_server.clients),

2362

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

2035

2363

signature="oa{sv}")

2036

2364

2037

2365

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

2038

2366

def RemoveClient(self, object_path):

2039

2367

"D-Bus method"

2040

for c in tcp_server.clients:

2368

for c in tcp_server.clients.itervalues():

2041

2369

if c.dbus_object_path == object_path:

2042

tcp_server.clients.remove(c)

2370

del tcp_server.clients[c.name]

2043

2371

c.remove_from_connection()

2044

2372

# Don't signal anything except ClientRemoved

2045

2373

c.disable(quiet=True)

2051

2379

del _interface

2052

2380

2053

2381

class MandosDBusServiceTransitional(MandosDBusService):

2054

__metaclass__ = transitional_dbus_metaclass

2382

__metaclass__ = AlternateDBusNamesMetaclass

2055

2383

mandos_dbus_service = MandosDBusServiceTransitional()

2056

2384

2057

2385

def cleanup():

2058

2386

"Cleanup function; run on exit"

2059

2387

service.cleanup()

2060

2388

2389

multiprocessing.active_children()

2390

if not (tcp_server.clients or client_settings):

2391

return

2392

2393

# Store client before exiting. Secrets are encrypted with key

2394

# based on what config file has. If config file is

2395

# removed/edited, old secret will thus be unrecovable.

2396

clients = []

2397

with Crypto() as crypt:

2398

for client in tcp_server.clients.itervalues():

2399

key = client_settings[client.name]["secret"]

2400

client.encrypted_secret = crypt.encrypt(client.secret,

2401

key)

2402

client_dict = {}

2403

2404

# A list of attributes that will not be stored when

2405

# shutting down.

2406

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

2407

for name, typ in (inspect.getmembers

2408

(dbus.service.Object)):

2409

exclude.add(name)

2410

2411

client_dict["encrypted_secret"] = (client

2412

.encrypted_secret)

2413

for attr in client.client_structure:

2414

if attr not in exclude:

2415

client_dict[attr] = getattr(client, attr)

2416

2417

clients.append(client_dict)

2418

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

2419

2420

try:

2421

with os.fdopen(os.open(stored_state_path,

2422

os.O_CREAT|os.O_WRONLY|os.O_TRUNC,

2423

0600), "wb") as stored_state:

2424

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

2425

except (IOError, OSError) as e:

2426

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

2427

.format(e))

2428

if e.errno not in (errno.ENOENT, errno.EACCES):

2429

raise

2430

2431

# Delete all clients, and settings from config

2061

2432

while tcp_server.clients:

2062

client = tcp_server.clients.pop()

2433

name, client = tcp_server.clients.popitem()

2063

2434

if use_dbus:

2064

2435

client.remove_from_connection()

2065

client.disable_hook = None

2066

2436

# Don't signal anything except ClientRemoved

2067

2437

client.disable(quiet=True)

2068

2438

if use_dbus:

2069

2439

# Emit D-Bus signal

2070

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2440

mandos_dbus_service.ClientRemoved(client

2441

.dbus_object_path,

2071

2442

client.name)

2443

client_settings.clear()

2072

2444

2073

2445

atexit.register(cleanup)

2074

2446

2075

for client in tcp_server.clients:

2447

for client in tcp_server.clients.itervalues():

2076

2448

if use_dbus:

2077

2449

# Emit D-Bus signal

2078

2450

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2079

client.enable()

2451

# Need to initiate checking of clients

2452

if client.enabled:

2453

client.init_checker()

2080

2454

2081

2455

tcp_server.enable()

2082

2456

tcp_server.server_activate()