/mandos/release : revision 24.1.182

28

# along with this program. If not, see

29

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

30

#

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

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

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#

33

34

from __future__ import (division, absolute_import, print_function,

62

import functools

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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65

69

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import dbus

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67

import dbus.service

75

72

import ctypes.util

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73

import xml.dom.minidom

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74

import inspect

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import GnuPGInterface

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75

80

76

try:

81

77

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

86

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SO_BINDTODEVICE = None

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83

88

84

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version = "1.4.1"

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stored_state_path = "/var/lib/mandos/clients.pickle"

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version = "1.3.1"

91

86

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logger = logging.getLogger()

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#logger = logging.getLogger('mandos')

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logger = logging.Logger('mandos')

93

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syslogger = (logging.handlers.SysLogHandler

94

90

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

95

91

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

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,

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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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122

console = logging.StreamHandler()

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

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' [%(process)d]:'

125

' %(levelname)s:'

126

' %(message)s'))

127

logger.addHandler(console)

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logger.setLevel(level)

129

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):

138

self.gnupg = GnuPGInterface.GnuPG()

139

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

140

self.gnupg = GnuPGInterface.GnuPG()

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self.gnupg.options.meta_interactive = False

142

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):

154

self._cleanup()

155

156

def _cleanup(self):

157

if self.tempdir is not None:

158

# Delete contents of tempdir

159

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

160

topdown = False):

161

for filename in files:

162

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

163

for dirname in dirs:

164

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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169

def password_encode(self, password):

170

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

171

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

172

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

173

174

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:

177

try:

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

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

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attach_fhs={'stderr': devnull})

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

182

f.write(data)

183

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:

187

raise CryptoError(e)

188

self.gnupg.passphrase = None

189

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'],

196

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

197

attach_fhs={'stderr': devnull})

198

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

199

f.write(data)

200

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

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decrypted_plaintext = f.read()

202

proc.wait()

203

except IOError as e:

204

raise CryptoError(e)

205

self.gnupg.passphrase = None

206

return decrypted_plaintext

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208

92

syslogger.setFormatter(logging.Formatter

93

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

94

' %(message)s'))

95

logger.addHandler(syslogger)

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97

console = logging.StreamHandler()

98

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

99

' %(levelname)s:'

100

' %(message)s'))

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logger.addHandler(console)

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102

210

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class AvahiError(Exception):

211

104

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

266

159

" after %i retries, exiting.",

267

160

self.rename_count)

268

161

raise AvahiServiceError("Too many renames")

269

self.name = unicode(self.server

270

.GetAlternativeServiceName(self.name))

162

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

271

163

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

272

164

self.name)

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syslogger.setFormatter(logging.Formatter

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

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

168

% self.name))

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self.remove()

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try:

275

171

self.add()

295

191

avahi.DBUS_INTERFACE_ENTRY_GROUP)

296

192

self.entry_group_state_changed_match = (

297

193

self.group.connect_to_signal(

298

'StateChanged', self.entry_group_state_changed))

194

'StateChanged', self .entry_group_state_changed))

299

195

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

300

196

self.name, self.type)

301

197

self.group.AddService(

327

223

try:

328

224

self.group.Free()

329

225

except (dbus.exceptions.UnknownMethodException,

330

dbus.exceptions.DBusException):

226

dbus.exceptions.DBusException) as e:

331

227

pass

332

228

self.group = None

333

229

self.remove()

367

263

self.server_state_changed)

368

264

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

369

265

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

379

266

380

267

def _timedelta_to_milliseconds(td):

381

268

"Convert a datetime.timedelta() to milliseconds"

400

287

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

401

288

checker_initiator_tag: a gobject event source tag, or None

402

289

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

405

290

current_checker_command: string; current running checker_command

291

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

406

292

disable_initiator_tag: a gobject event source tag, or None

407

293

enabled: bool()

408

294

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

411

297

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

412

298

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

413

299

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

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

300

last_enabled: datetime.datetime(); (UTC)

419

301

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

420

302

D-Bus identifiers

431

313

"created", "enabled", "fingerprint",

432

314

"host", "interval", "last_checked_ok",

433

315

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

434

316

435

317

def timeout_milliseconds(self):

436

318

"Return the 'timeout' attribute in milliseconds"

437

319

return _timedelta_to_milliseconds(self.timeout)

438

320

439

321

def extended_timeout_milliseconds(self):

440

322

"Return the 'extended_timeout' attribute in milliseconds"

441

return _timedelta_to_milliseconds(self.extended_timeout)

323

return _timedelta_to_milliseconds(self.extended_timeout)

442

324

443

325

def interval_milliseconds(self):

444

326

"Return the 'interval' attribute in milliseconds"

445

327

return _timedelta_to_milliseconds(self.interval)

446

328

447

329

def approval_delay_milliseconds(self):

448

330

return _timedelta_to_milliseconds(self.approval_delay)

449

331

450

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

332

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

451

333

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

452

334

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

453

335

attribute."""

473

355

% self.name)

474

356

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

475

357

self.created = datetime.datetime.utcnow()

476

self.enabled = True

358

self.enabled = False

477

359

self.last_approval_request = None

478

self.last_enabled = datetime.datetime.utcnow()

360

self.last_enabled = None

479

361

self.last_checked_ok = None

480

self.last_checker_status = None

481

362

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

482

self.extended_timeout = string_to_delta(config

483

["extended_timeout"])

363

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

484

364

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

365

self.disable_hook = disable_hook

485

366

self.checker = None

486

367

self.checker_initiator_tag = None

487

368

self.disable_initiator_tag = None

488

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

369

self.expires = None

489

370

self.checker_callback_tag = None

490

371

self.checker_command = config["checker"]

491

372

self.current_checker_command = None

373

self.last_connect = None

492

374

self._approved = None

493

375

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

494

376

True)

497

379

config["approval_delay"])

498

380

self.approval_duration = string_to_delta(

499

381

config["approval_duration"])

500

self.changedstate = (multiprocessing_manager

501

.Condition(multiprocessing_manager

502

.Lock()))

503

self.client_structure = [attr for attr in

504

self.__dict__.iterkeys()

505

if not attr.startswith("_")]

506

self.client_structure.append("client_structure")

507

508

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

509

lambda obj:

510

isinstance(obj,

511

property)):

512

if not name.startswith("_"):

513

self.client_structure.append(name)

382

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

514

383

515

# Send notice to process children that client state has changed

516

384

def send_changedstate(self):

517

with self.changedstate:

518

self.changedstate.notify_all()

519

385

self.changedstate.acquire()

386

self.changedstate.notify_all()

387

self.changedstate.release()

388

520

389

def enable(self):

521

390

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

522

391

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

523

392

# Already enabled

524

393

return

525

394

self.send_changedstate()

395

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

396

# and every interval from then on.

397

self.checker_initiator_tag = (gobject.timeout_add

398

(self.interval_milliseconds(),

399

self.start_checker))

400

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

526

401

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

402

self.disable_initiator_tag = (gobject.timeout_add

403

(self.timeout_milliseconds(),

404

self.disable))

527

405

self.enabled = True

528

406

self.last_enabled = datetime.datetime.utcnow()

529

self.init_checker()

407

# Also start a new checker *right now*.

408

self.start_checker()

530

409

531

410

def disable(self, quiet=True):

532

411

"""Disable this client."""

544

423

gobject.source_remove(self.checker_initiator_tag)

545

424

self.checker_initiator_tag = None

546

425

self.stop_checker()

426

if self.disable_hook:

427

self.disable_hook(self)

547

428

self.enabled = False

548

429

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

549

430

return False

550

431

551

432

def __del__(self):

433

self.disable_hook = None

552

434

self.disable()

553

435

554

def init_checker(self):

555

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

556

# and every interval from then on.

557

self.checker_initiator_tag = (gobject.timeout_add

558

(self.interval_milliseconds(),

559

self.start_checker))

560

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

561

self.disable_initiator_tag = (gobject.timeout_add

562

(self.timeout_milliseconds(),

563

self.disable))

564

# Also start a new checker *right now*.

565

self.start_checker()

566

567

436

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

568

437

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

569

438

self.checker_callback_tag = None

570

439

self.checker = None

571

440

if os.WIFEXITED(condition):

572

self.last_checker_status = os.WEXITSTATUS(condition)

573

if self.last_checker_status == 0:

441

exitstatus = os.WEXITSTATUS(condition)

442

if exitstatus == 0:

574

443

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

575

444

vars(self))

576

445

self.checked_ok()

578

447

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

579

448

vars(self))

580

449

else:

581

self.last_checker_status = -1

582

450

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

583

451

vars(self))

584

452

591

459

if timeout is None:

592

460

timeout = self.timeout

593

461

self.last_checked_ok = datetime.datetime.utcnow()

594

if self.disable_initiator_tag is not None:

595

gobject.source_remove(self.disable_initiator_tag)

596

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

597

self.disable_initiator_tag = (gobject.timeout_add

598

(_timedelta_to_milliseconds

599

(timeout), self.disable))

600

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

462

gobject.source_remove(self.disable_initiator_tag)

463

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

464

self.disable_initiator_tag = (gobject.timeout_add

465

(_timedelta_to_milliseconds(timeout),

466

self.disable))

601

467

602

468

def need_approval(self):

603

469

self.last_approval_request = datetime.datetime.utcnow()

643

509

'replace')))

644

510

for attr in

645

511

self.runtime_expansions)

646

512

647

513

try:

648

514

command = self.checker_command % escaped_attrs

649

515

except TypeError as error:

695

561

raise

696

562

self.checker = None

697

563

698

699

564

def dbus_service_property(dbus_interface, signature="v",

700

565

access="readwrite", byte_arrays=False):

701

566

"""Decorators for marking methods of a DBusObjectWithProperties to

747

612

748

613

class DBusObjectWithProperties(dbus.service.Object):

749

614

"""A D-Bus object with properties.

750

615

751

616

Classes inheriting from this can use the dbus_service_property

752

617

decorator to expose methods as D-Bus properties. It exposes the

753

618

standard Get(), Set(), and GetAll() methods on the D-Bus.

760

625

def _get_all_dbus_properties(self):

761

626

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

762

627

"""

763

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

764

for cls in self.__class__.__mro__

628

return ((prop._dbus_name, prop)

765

629

for name, prop in

766

inspect.getmembers(cls, self._is_dbus_property))

630

inspect.getmembers(self, self._is_dbus_property))

767

631

768

632

def _get_dbus_property(self, interface_name, property_name):

769

633

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

770

634

property with the specified name and interface.

771

635

"""

772

for cls in self.__class__.__mro__:

773

for name, value in (inspect.getmembers

774

(cls, self._is_dbus_property)):

775

if (value._dbus_name == property_name

776

and value._dbus_interface == interface_name):

777

return value.__get__(self)

778

636

for name in (property_name,

637

property_name + "_dbus_property"):

638

prop = getattr(self, name, None)

639

if (prop is None

640

or not self._is_dbus_property(prop)

641

or prop._dbus_name != property_name

642

or (interface_name and prop._dbus_interface

643

and interface_name != prop._dbus_interface)):

644

continue

645

return prop

779

646

# No such property

780

647

raise DBusPropertyNotFound(self.dbus_object_path + ":"

781

648

+ interface_name + "."

815

682

def GetAll(self, interface_name):

816

683

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

817

684

standard.

818

685

819

686

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

820

687

"""

821

properties = {}

688

all = {}

822

689

for name, prop in self._get_all_dbus_properties():

823

690

if (interface_name

824

691

and interface_name != prop._dbus_interface):

829

696

continue

830

697

value = prop()

831

698

if not hasattr(value, "variant_level"):

832

properties[name] = value

699

all[name] = value

833

700

continue

834

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

835

value.variant_level+1)

836

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

701

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

702

value.variant_level+1)

703

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

837

704

838

705

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

839

706

out_signature="s",

890

757

return dbus.String(dt.isoformat(),

891

758

variant_level=variant_level)

892

759

893

894

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

895

.__metaclass__):

896

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

897

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

898

"""

899

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

900

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

901

# methods, signals, or properties in them

902

for base in (b for b in bases

903

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

904

# Go though all attributes of the base class

905

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

906

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

907

# with the wrong interface name

908

if (not hasattr(attribute, "_dbus_interface")

909

or not attribute._dbus_interface

910

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

911

continue

912

# Create an alternate D-Bus interface name based on

913

# the current name

914

alt_interface = (attribute._dbus_interface

915

.replace("se.recompile.Mandos",

916

"se.bsnet.fukt.Mandos"))

917

# Is this a D-Bus signal?

918

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

919

# Extract the original non-method function by

920

# black magic

921

nonmethod_func = (dict(

922

zip(attribute.func_code.co_freevars,

923

attribute.__closure__))["func"]

924

.cell_contents)

925

# Create a new, but exactly alike, function

926

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

927

# with the alternate D-Bus interface name

928

new_function = (dbus.service.signal

929

(alt_interface,

930

attribute._dbus_signature)

931

(types.FunctionType(

932

nonmethod_func.func_code,

933

nonmethod_func.func_globals,

934

nonmethod_func.func_name,

935

nonmethod_func.func_defaults,

936

nonmethod_func.func_closure)))

937

# Define a creator of a function to call both the

938

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

939

# signals gets sent when the function is called

940

def fixscope(func1, func2):

941

"""This function is a scope container to pass

942

func1 and func2 to the "call_both" function

943

outside of its arguments"""

944

def call_both(*args, **kwargs):

945

"""This function will emit two D-Bus

946

signals by calling func1 and func2"""

947

func1(*args, **kwargs)

948

func2(*args, **kwargs)

949

return call_both

950

# Create the "call_both" function and add it to

951

# the class

952

attr[attrname] = fixscope(attribute,

953

new_function)

954

# Is this a D-Bus method?

955

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

956

# Create a new, but exactly alike, function

957

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

958

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

959

# to the class.

960

attr[attrname] = (dbus.service.method

961

(alt_interface,

962

attribute._dbus_in_signature,

963

attribute._dbus_out_signature)

964

(types.FunctionType

965

(attribute.func_code,

966

attribute.func_globals,

967

attribute.func_name,

968

attribute.func_defaults,

969

attribute.func_closure)))

970

# Is this a D-Bus property?

971

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

972

# Create a new, but exactly alike, function

973

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

974

# property with the alternate D-Bus interface

975

# name. Add it to the class.

976

attr[attrname] = (dbus_service_property

977

(alt_interface,

978

attribute._dbus_signature,

979

attribute._dbus_access,

980

attribute

981

._dbus_get_args_options

982

["byte_arrays"])

983

(types.FunctionType

984

(attribute.func_code,

985

attribute.func_globals,

986

attribute.func_name,

987

attribute.func_defaults,

988

attribute.func_closure)))

989

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

990

991

992

760

class ClientDBus(Client, DBusObjectWithProperties):

993

761

"""A Client class using D-Bus

994

762

1003

771

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

1004

772

1005

773

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

774

self._approvals_pending = 0

1006

775

self.bus = bus

1007

776

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

1008

1009

self._approvals_pending = 0

1010

777

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

1011

778

# the D-Bus

1012

779

client_object_name = unicode(self.name).translate(

1020

787

def notifychangeproperty(transform_func,

1021

788

dbus_name, type_func=lambda x: x,

1022

789

variant_level=1):

1023

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

1024

its changes to DBus.

1025

1026

transform_fun: Function that takes a value and a variant_level

1027

and transforms it to a D-Bus type.

1028

dbus_name: D-Bus name of the variable

790

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

791

changes to DBus.

792

transform_fun: Function that takes a value and transform it to

793

DBus type.

794

dbus_name: DBus name of the variable

1029

795

type_func: Function that transform the value before sending it

1030

to the D-Bus. Default: no transform

1031

variant_level: D-Bus variant level. Default: 1

796

to DBus

797

variant_level: DBus variant level. default: 1

1032

798

"""

1033

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

799

real_value = [None,]

1034

800

def setter(self, value):

801

old_value = real_value[0]

802

real_value[0] = value

1035

803

if hasattr(self, "dbus_object_path"):

1036

if (not hasattr(self, attrname) or

1037

type_func(getattr(self, attrname, None))

1038

!= type_func(value)):

1039

dbus_value = transform_func(type_func(value),

1040

variant_level

1041

=variant_level)

804

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

805

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

806

variant_level)

1042

807

self.PropertyChanged(dbus.String(dbus_name),

1043

808

dbus_value)

1044

setattr(self, attrname, value)

1045

1046

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

1047

1048

809

810

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

811

812

1049

813

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1050

814

approvals_pending = notifychangeproperty(dbus.Boolean,

1051

815

"ApprovalPending",

1054

818

last_enabled = notifychangeproperty(datetime_to_dbus,

1055

819

"LastEnabled")

1056

820

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

1057

type_func = lambda checker:

1058

checker is not None)

821

type_func = lambda checker: checker is not None)

1059

822

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1060

823

"LastCheckedOK")

1061

last_approval_request = notifychangeproperty(

1062

datetime_to_dbus, "LastApprovalRequest")

824

last_approval_request = notifychangeproperty(datetime_to_dbus,

825

"LastApprovalRequest")

1063

826

approved_by_default = notifychangeproperty(dbus.Boolean,

1064

827

"ApprovedByDefault")

1065

approval_delay = notifychangeproperty(dbus.UInt16,

1066

"ApprovalDelay",

1067

type_func =

1068

_timedelta_to_milliseconds)

1069

approval_duration = notifychangeproperty(

1070

dbus.UInt16, "ApprovalDuration",

1071

type_func = _timedelta_to_milliseconds)

828

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

829

type_func = _timedelta_to_milliseconds)

830

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

831

type_func = _timedelta_to_milliseconds)

1072

832

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

1073

833

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

1074

type_func =

1075

_timedelta_to_milliseconds)

1076

extended_timeout = notifychangeproperty(

1077

dbus.UInt16, "ExtendedTimeout",

1078

type_func = _timedelta_to_milliseconds)

1079

interval = notifychangeproperty(dbus.UInt16,

1080

"Interval",

1081

type_func =

1082

_timedelta_to_milliseconds)

834

type_func = _timedelta_to_milliseconds)

835

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

836

type_func = _timedelta_to_milliseconds)

837

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

838

type_func = _timedelta_to_milliseconds)

1083

839

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

1084

840

1085

841

del notifychangeproperty

1111

867

1112

868

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

1113

869

*args, **kwargs)

1114

870

1115

871

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

1116

872

old_checker = self.checker

1117

873

if self.checker is not None:

1139

895

1140

896

1141

897

## D-Bus methods, signals & properties

1142

_interface = "se.recompile.Mandos.Client"

898

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

1143

899

1144

900

## Signals

1145

901

1182

938

"D-Bus signal"

1183

939

return self.need_approval()

1184

940

1185

# NeRwequest - signal

1186

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

1187

def NewRequest(self, ip):

1188

"""D-Bus signal

1189

Is sent after a client request a password.

1190

"""

1191

pass

1192

1193

941

## Methods

1194

942

1195

943

# Approve - method

1328

1076

gobject.source_remove(self.disable_initiator_tag)

1329

1077

self.disable_initiator_tag = None

1330

1078

self.expires = None

1331

time_to_die = _timedelta_to_milliseconds((self

1332

.last_checked_ok

1333

+ self.timeout)

1334

- datetime.datetime

1335

.utcnow())

1079

time_to_die = (self.

1080

_timedelta_to_milliseconds((self

1081

.last_checked_ok

1082

+ self.timeout)

1083

- datetime.datetime

1084

.utcnow()))

1336

1085

if time_to_die <= 0:

1337

1086

# The timeout has passed

1338

1087

self.disable()

1339

1088

else:

1340

1089

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

1341

+ datetime.timedelta(milliseconds =

1342

time_to_die))

1090

+ datetime.timedelta(milliseconds = time_to_die))

1343

1091

self.disable_initiator_tag = (gobject.timeout_add

1344

1092

(time_to_die, self.disable))

1345

1093

1346

1094

# ExtendedTimeout - property

1347

1095

@dbus_service_property(_interface, signature="t",

1348

1096

access="readwrite")

1350

1098

if value is None: # get

1351

1099

return dbus.UInt64(self.extended_timeout_milliseconds())

1352

1100

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

1353

1101

1354

1102

# Interval - property

1355

1103

@dbus_service_property(_interface, signature="t",

1356

1104

access="readwrite")

1365

1113

self.checker_initiator_tag = (gobject.timeout_add

1366

1114

(value, self.start_checker))

1367

1115

self.start_checker() # Start one now, too

1368

1116

1369

1117

# Checker - property

1370

1118

@dbus_service_property(_interface, signature="s",

1371

1119

access="readwrite")

1405

1153

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

1406

1154

if not self._pipe.recv():

1407

1155

raise KeyError()

1408

1156

1409

1157

def __getattribute__(self, name):

1410

1158

if(name == '_pipe'):

1411

1159

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

1418

1166

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

1419

1167

return self._pipe.recv()[1]

1420

1168

return func

1421

1169

1422

1170

def __setattr__(self, name, value):

1423

1171

if(name == '_pipe'):

1424

1172

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

1425

1173

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

1426

1174

1427

1175

1428

class ClientDBusTransitional(ClientDBus):

1429

__metaclass__ = AlternateDBusNamesMetaclass

1430

1431

1432

1176

class ClientHandler(socketserver.BaseRequestHandler, object):

1433

1177

"""A class to handle client connections.

1434

1178

1441

1185

unicode(self.client_address))

1442

1186

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

1443

1187

self.server.child_pipe.fileno())

1444

1188

1445

1189

session = (gnutls.connection

1446

1190

.ClientSession(self.request,

1447

1191

gnutls.connection

1448

1192

.X509Credentials()))

1449

1193

1450

1194

# Note: gnutls.connection.X509Credentials is really a

1451

1195

# generic GnuTLS certificate credentials object so long as

1452

1196

# no X.509 keys are added to it. Therefore, we can use it

1453

1197

# here despite using OpenPGP certificates.

1454

1198

1455

1199

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

1456

1200

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

1457

1201

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

1463

1207

(gnutls.library.functions

1464

1208

.gnutls_priority_set_direct(session._c_object,

1465

1209

priority, None))

1466

1210

1467

1211

# Start communication using the Mandos protocol

1468

1212

# Get protocol number

1469

1213

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

1474

1218

except (ValueError, IndexError, RuntimeError) as error:

1475

1219

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

1476

1220

return

1477

1221

1478

1222

# Start GnuTLS connection

1479

1223

try:

1480

1224

session.handshake()

1484

1228

# established. Just abandon the request.

1485

1229

return

1486

1230

logger.debug("Handshake succeeded")

1487

1231

1488

1232

approval_required = False

1489

1233

try:

1490

1234

try:

1495

1239

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

1496

1240

return

1497

1241

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

1498

if self.server.use_dbus:

1499

# Emit D-Bus signal

1500

client.NewRequest(str(self.client_address))

1501

1242

1502

1243

try:

1503

1244

client = ProxyClient(child_pipe, fpr,

1504

1245

self.client_address)

1516

1257

client.name)

1517

1258

if self.server.use_dbus:

1518

1259

# Emit D-Bus signal

1519

client.Rejected("Disabled")

1260

client.Rejected("Disabled")

1520

1261

return

1521

1262

1522

1263

if client._approved or not client.approval_delay:

1539

1280

return

1540

1281

1541

1282

#wait until timeout or approved

1283

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

1542

1284

time = datetime.datetime.now()

1543

1285

client.changedstate.acquire()

1544

(client.changedstate.wait

1545

(float(client._timedelta_to_milliseconds(delay)

1546

/ 1000)))

1286

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

1547

1287

client.changedstate.release()

1548

1288

time2 = datetime.datetime.now()

1549

1289

if (time2 - time) >= delay:

1571

1311

sent, len(client.secret)

1572

1312

- (sent_size + sent))

1573

1313

sent_size += sent

1574

1314

1575

1315

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

1576

# bump the timeout using extended_timeout

1316

# bump the timeout as if seen

1577

1317

client.checked_ok(client.extended_timeout)

1578

1318

if self.server.use_dbus:

1579

1319

# Emit D-Bus signal

1647

1387

# Convert the buffer to a Python bytestring

1648

1388

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

1649

1389

# Convert the bytestring to hexadecimal notation

1650

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

1390

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

1651

1391

return hex_fpr

1652

1392

1653

1393

1659

1399

except:

1660

1400

self.handle_error(request, address)

1661

1401

self.close_request(request)

1662

1402

1663

1403

def process_request(self, request, address):

1664

1404

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

1665

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

1666

args = (request,

1667

address))

1668

proc.start()

1669

return proc

1670

1405

multiprocessing.Process(target = self.sub_process_main,

1406

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

1671

1407

1672

1408

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1673

1409

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

1677

1413

This function creates a new pipe in self.pipe

1678

1414

"""

1679

1415

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1680

1681

proc = MultiprocessingMixIn.process_request(self, request,

1682

client_address)

1416

1417

super(MultiprocessingMixInWithPipe,

1418

self).process_request(request, client_address)

1683

1419

self.child_pipe.close()

1684

self.add_pipe(parent_pipe, proc)

1685

1686

def add_pipe(self, parent_pipe, proc):

1420

self.add_pipe(parent_pipe)

1421

1422

def add_pipe(self, parent_pipe):

1687

1423

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

1688

1424

raise NotImplementedError

1689

1425

1690

1691

1426

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1692

1427

socketserver.TCPServer, object):

1693

1428

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

1767

1502

self.enabled = False

1768

1503

self.clients = clients

1769

1504

if self.clients is None:

1770

self.clients = {}

1505

self.clients = set()

1771

1506

self.use_dbus = use_dbus

1772

1507

self.gnutls_priority = gnutls_priority

1773

1508

IPv6_TCPServer.__init__(self, server_address,

1777

1512

def server_activate(self):

1778

1513

if self.enabled:

1779

1514

return socketserver.TCPServer.server_activate(self)

1780

1781

1515

def enable(self):

1782

1516

self.enabled = True

1783

1784

def add_pipe(self, parent_pipe, proc):

1517

def add_pipe(self, parent_pipe):

1785

1518

# Call "handle_ipc" for both data and EOF events

1786

1519

gobject.io_add_watch(parent_pipe.fileno(),

1787

1520

gobject.IO_IN | gobject.IO_HUP,

1788

1521

functools.partial(self.handle_ipc,

1789

parent_pipe =

1790

parent_pipe,

1791

proc = proc))

1792

1522

parent_pipe = parent_pipe))

1523

1793

1524

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

1794

proc = None, client_object=None):

1525

client_object=None):

1795

1526

condition_names = {

1796

1527

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

1797

1528

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

1806

1537

for cond, name in

1807

1538

condition_names.iteritems()

1808

1539

if cond & condition)

1809

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

1540

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

1810

1541

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

1811

# Wait for other process to exit

1812

proc.join()

1813

1542

return False

1814

1543

1815

1544

# Read a request from the child

1820

1549

fpr = request[1]

1821

1550

address = request[2]

1822

1551

1823

for c in self.clients.itervalues():

1552

for c in self.clients:

1824

1553

if c.fingerprint == fpr:

1825

1554

client = c

1826

1555

break

1829

1558

"dress: %s", fpr, address)

1830

1559

if self.use_dbus:

1831

1560

# Emit D-Bus signal

1832

mandos_dbus_service.ClientNotFound(fpr,

1833

address[0])

1561

mandos_dbus_service.ClientNotFound(fpr, address[0])

1834

1562

parent_pipe.send(False)

1835

1563

return False

1836

1564

1837

1565

gobject.io_add_watch(parent_pipe.fileno(),

1838

1566

gobject.IO_IN | gobject.IO_HUP,

1839

1567

functools.partial(self.handle_ipc,

1840

parent_pipe =

1841

parent_pipe,

1842

proc = proc,

1843

client_object =

1844

client))

1568

parent_pipe = parent_pipe,

1569

client_object = client))

1845

1570

parent_pipe.send(True)

1846

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

1847

# same fileno

1571

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

1848

1572

return False

1849

1573

if command == 'funcall':

1850

1574

funcname = request[1]

1851

1575

args = request[2]

1852

1576

kwargs = request[3]

1853

1577

1854

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

1855

funcname)(*args,

1856

**kwargs)))

1857

1578

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

1579

1858

1580

if command == 'getattr':

1859

1581

attrname = request[1]

1860

1582

if callable(client_object.__getattribute__(attrname)):

1861

1583

parent_pipe.send(('function',))

1862

1584

else:

1863

parent_pipe.send(('data', client_object

1864

.__getattribute__(attrname)))

1585

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

1865

1586

1866

1587

if command == 'setattr':

1867

1588

attrname = request[1]

1868

1589

value = request[2]

1869

1590

setattr(client_object, attrname, value)

1870

1591

1871

1592

return True

1872

1593

1873

1594

1910

1631

return timevalue

1911

1632

1912

1633

1634

def if_nametoindex(interface):

1635

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

1636

1637

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

1638

global if_nametoindex

1639

try:

1640

if_nametoindex = (ctypes.cdll.LoadLibrary

1641

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

1642

.if_nametoindex)

1643

except (OSError, AttributeError):

1644

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

1645

def if_nametoindex(interface):

1646

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

1647

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

1648

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

1649

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1650

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

1651

interface))

1652

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

1653

ifreq[16:20])[0]

1654

return interface_index

1655

return if_nametoindex(interface)

1656

1657

1913

1658

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

1914

1659

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

1915

1660

1970

1715

" system bus interface")

1971

1716

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

1972

1717

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

1973

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

1974

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

1975

" state", default=True)

1976

1977

1718

options = parser.parse_args()

1978

1719

1979

1720

if options.check:

2014

1755

# options, if set.

2015

1756

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

2016

1757

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

2017

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

1758

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

2018

1759

value = getattr(options, option)

2019

1760

if value is not None:

2020

1761

server_settings[option] = value

2032

1773

debuglevel = server_settings["debuglevel"]

2033

1774

use_dbus = server_settings["use_dbus"]

2034

1775

use_ipv6 = server_settings["use_ipv6"]

2035

2036

if debug:

2037

initlogger(logging.DEBUG)

2038

else:

2039

if not debuglevel:

2040

initlogger()

2041

else:

2042

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

2043

initlogger(level)

2044

1776

2045

1777

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

2046

1778

syslogger.setFormatter(logging.Formatter

2047

1779

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

2101

1833

if error[0] != errno.EPERM:

2102

1834

raise error

2103

1835

1836

if not debug and not debuglevel:

1837

syslogger.setLevel(logging.WARNING)

1838

console.setLevel(logging.WARNING)

1839

if debuglevel:

1840

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

1841

syslogger.setLevel(level)

1842

console.setLevel(level)

1843

2104

1844

if debug:

2105

1845

# Enable all possible GnuTLS debugging

2106

1846

2137

1877

# End of Avahi example code

2138

1878

if use_dbus:

2139

1879

try:

2140

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

1880

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

2141

1881

bus, do_not_queue=True)

2142

old_bus_name = (dbus.service.BusName

2143

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

2144

do_not_queue=True))

2145

1882

except dbus.exceptions.NameExistsException as e:

2146

1883

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

2147

1884

use_dbus = False

2148

1885

server_settings["use_dbus"] = False

2149

1886

tcp_server.use_dbus = False

2150

1887

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2151

service = AvahiServiceToSyslog(name =

2152

server_settings["servicename"],

2153

servicetype = "_mandos._tcp",

2154

protocol = protocol, bus = bus)

1888

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

1889

servicetype = "_mandos._tcp",

1890

protocol = protocol, bus = bus)

2155

1891

if server_settings["interface"]:

2156

1892

service.interface = (if_nametoindex

2157

1893

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

2161

1897

2162

1898

client_class = Client

2163

1899

if use_dbus:

2164

client_class = functools.partial(ClientDBusTransitional,

2165

bus = bus)

2166

2167

special_settings = {

2168

# Some settings need to be accessd by special methods;

2169

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

2170

"approved_by_default":

2171

lambda section:

2172

client_config.getboolean(section, "approved_by_default"),

2173

}

2174

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

2175

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

2176

# with exceptions for any special settings as defined above

2177

client_settings = dict((clientname,

2178

dict((setting,

2179

(value

2180

if setting not in special_settings

2181

else special_settings[setting]

2182

(clientname)))

2183

for setting, value in

2184

client_config.items(clientname)))

2185

for clientname in client_config.sections())

2186

2187

old_client_settings = {}

2188

clients_data = []

2189

2190

# Get client data and settings from last running state.

2191

if server_settings["restore"]:

2192

try:

2193

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

2194

clients_data, old_client_settings = (pickle.load

2195

(stored_state))

2196

os.remove(stored_state_path)

2197

except IOError as e:

2198

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

2199

.format(e))

2200

if e.errno != errno.ENOENT:

2201

raise

2202

2203

with Crypto() as crypt:

2204

for client in clients_data:

2205

client_name = client["name"]

2206

2207

# Decide which value to use after restoring saved state.

2208

# We have three different values: Old config file,

2209

# new config file, and saved state.

2210

# New config value takes precedence if it differs from old

2211

# config value, otherwise use saved state.

2212

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

2213

try:

2214

# For each value in new config, check if it

2215

# differs from the old config value (Except for

2216

# the "secret" attribute)

2217

if (name != "secret" and

2218

value != old_client_settings[client_name]

2219

[name]):

2220

setattr(client, name, value)

2221

except KeyError:

2222

pass

2223

2224

# Clients who has passed its expire date can still be

2225

# enabled if its last checker was sucessful. Clients

2226

# whose checker failed before we stored its state is

2227

# assumed to have failed all checkers during downtime.

2228

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

2229

if ((datetime.datetime.utcnow()

2230

- client["last_checked_ok"])

2231

> client["interval"]):

2232

if client["last_checker_status"] != 0:

2233

client["enabled"] = False

2234

else:

2235

client["expires"] = (datetime.datetime

2236

.utcnow()

2237

+ client["timeout"])

2238

2239

client["changedstate"] = (multiprocessing_manager

2240

.Condition

2241

(multiprocessing_manager

2242

.Lock()))

2243

if use_dbus:

2244

new_client = (ClientDBusTransitional.__new__

2245

(ClientDBusTransitional))

2246

tcp_server.clients[client_name] = new_client

2247

new_client.bus = bus

2248

for name, value in client.iteritems():

2249

setattr(new_client, name, value)

2250

client_object_name = unicode(client_name).translate(

2251

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

2252

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

2253

new_client.dbus_object_path = (dbus.ObjectPath

2254

("/clients/"

2255

+ client_object_name))

2256

DBusObjectWithProperties.__init__(new_client,

2257

new_client.bus,

2258

new_client

2259

.dbus_object_path)

2260

else:

2261

tcp_server.clients[client_name] = (Client.__new__

2262

(Client))

2263

for name, value in client.iteritems():

2264

setattr(tcp_server.clients[client_name],

2265

name, value)

2266

1900

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

1901

def client_config_items(config, section):

1902

special_settings = {

1903

"approved_by_default":

1904

lambda: config.getboolean(section,

1905

"approved_by_default"),

1906

}

1907

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

2267

1908

try:

2268

tcp_server.clients[client_name].secret = (

2269

crypt.decrypt(tcp_server.clients[client_name]

2270

.encrypted_secret,

2271

client_settings[client_name]

2272

["secret"]))

2273

except CryptoError:

2274

# If decryption fails, we use secret from new settings

2275

tcp_server.clients[client_name].secret = (

2276

client_settings[client_name]["secret"])

2277

2278

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

2279

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

2280

del tcp_server.clients[clientname]

2281

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

2282

tcp_server.clients[clientname] = (client_class(name

2283

= clientname,

2284

config =

2285

client_settings

2286

[clientname]))

2287

1909

yield (name, special_settings[name]())

1910

except KeyError:

1911

yield (name, value)

1912

1913

tcp_server.clients.update(set(

1914

client_class(name = section,

1915

config= dict(client_config_items(

1916

client_config, section)))

1917

for section in client_config.sections()))

2288

1918

if not tcp_server.clients:

2289

1919

logger.warning("No clients defined")

2290

1920

2303

1933

del pidfilename

2304

1934

2305

1935

signal.signal(signal.SIGINT, signal.SIG_IGN)

2306

1936

2307

1937

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

2308

1938

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

2309

1939

2312

1942

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

2313

1943

def __init__(self):

2314

1944

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

2315

_interface = "se.recompile.Mandos"

1945

_interface = "se.bsnet.fukt.Mandos"

2316

1946

2317

1947

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

2318

1948

def ClientAdded(self, objpath):

2333

1963

def GetAllClients(self):

2334

1964

"D-Bus method"

2335

1965

return dbus.Array(c.dbus_object_path

2336

for c in

2337

tcp_server.clients.itervalues())

1966

for c in tcp_server.clients)

2338

1967

2339

1968

@dbus.service.method(_interface,

2340

1969

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

2342

1971

"D-Bus method"

2343

1972

return dbus.Dictionary(

2344

1973

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

2345

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

1974

for c in tcp_server.clients),

2346

1975

signature="oa{sv}")

2347

1976

2348

1977

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

2349

1978

def RemoveClient(self, object_path):

2350

1979

"D-Bus method"

2351

for c in tcp_server.clients.itervalues():

1980

for c in tcp_server.clients:

2352

1981

if c.dbus_object_path == object_path:

2353

del tcp_server.clients[c.name]

1982

tcp_server.clients.remove(c)

2354

1983

c.remove_from_connection()

2355

1984

# Don't signal anything except ClientRemoved

2356

1985

c.disable(quiet=True)

2361

1990

2362

1991

del _interface

2363

1992

2364

class MandosDBusServiceTransitional(MandosDBusService):

2365

__metaclass__ = AlternateDBusNamesMetaclass

2366

mandos_dbus_service = MandosDBusServiceTransitional()

1993

mandos_dbus_service = MandosDBusService()

2367

1994

2368

1995

def cleanup():

2369

1996

"Cleanup function; run on exit"

2370

1997

service.cleanup()

2371

1998

2372

multiprocessing.active_children()

2373

if not (tcp_server.clients or client_settings):

2374

return

2375

2376

# Store client before exiting. Secrets are encrypted with key

2377

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

2378

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

2379

clients = []

2380

with Crypto() as crypt:

2381

for client in tcp_server.clients.itervalues():

2382

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

2383

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

2384

key)

2385

client_dict = {}

2386

2387

# A list of attributes that will not be stored when

2388

# shutting down.

2389

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

2390

for name, typ in (inspect.getmembers

2391

(dbus.service.Object)):

2392

exclude.add(name)

2393

2394

client_dict["encrypted_secret"] = (client

2395

.encrypted_secret)

2396

for attr in client.client_structure:

2397

if attr not in exclude:

2398

client_dict[attr] = getattr(client, attr)

2399

2400

clients.append(client_dict)

2401

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

2402

2403

try:

2404

with os.fdopen(os.open(stored_state_path,

2405

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

2406

0600), "wb") as stored_state:

2407

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

2408

except (IOError, OSError) as e:

2409

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

2410

.format(e))

2411

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

2412

raise

2413

2414

# Delete all clients, and settings from config

2415

1999

while tcp_server.clients:

2416

name, client = tcp_server.clients.popitem()

2000

client = tcp_server.clients.pop()

2417

2001

if use_dbus:

2418

2002

client.remove_from_connection()

2003

client.disable_hook = None

2419

2004

# Don't signal anything except ClientRemoved

2420

2005

client.disable(quiet=True)

2421

2006

if use_dbus:

2422

2007

# Emit D-Bus signal

2423

mandos_dbus_service.ClientRemoved(client

2424

.dbus_object_path,

2008

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2425

2009

client.name)

2426

client_settings.clear()

2427

2010

2428

2011

atexit.register(cleanup)

2429

2012

2430

for client in tcp_server.clients.itervalues():

2013

for client in tcp_server.clients:

2431

2014

if use_dbus:

2432

2015

# Emit D-Bus signal

2433

2016

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2434

# Need to initiate checking of clients

2435

if client.enabled:

2436

client.init_checker()

2017

client.enable()

2437

2018

2438

2019

tcp_server.enable()

2439

2020

tcp_server.server_activate()

2479

2060

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

2480

2061

cleanup()

2481

2062

2482

2483

2063

if __name__ == '__main__':

2484

2064

main()