/mandos/trunk : revision 502.1.1

28

# along with this program. If not, see

29

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

30

#

31

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

31

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

32

#

33

34

from __future__ import (division, absolute_import, print_function,

62

import functools

63

import cPickle as pickle

64

import multiprocessing

65

import types

66

import binascii

67

import tempfile

68

65

69

66

import dbus

70

67

import dbus.service

75

72

import ctypes.util

76

73

import xml.dom.minidom

77

74

import inspect

78

import GnuPGInterface

79

75

80

76

try:

81

77

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

85

81

except ImportError:

86

82

SO_BINDTODEVICE = None

87

83

88

version = "1.4.1"

89

stored_state_file = "clients.pickle"

90

91

logger = logging.getLogger()

84

85

version = "1.3.1"

86

87

#logger = logging.getLogger('mandos')

88

logger = logging.Logger('mandos')

92

89

syslogger = (logging.handlers.SysLogHandler

93

90

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

94

91

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

95

96

try:

97

if_nametoindex = (ctypes.cdll.LoadLibrary

98

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

99

.if_nametoindex)

100

except (OSError, AttributeError):

101

def if_nametoindex(interface):

102

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

103

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

104

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

105

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

106

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

107

interface))

108

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

109

ifreq[16:20])[0]

110

return interface_index

111

112

113

def initlogger(debug, level=logging.WARNING):

114

"""init logger and add loglevel"""

115

116

syslogger.setFormatter(logging.Formatter

117

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

118

' %(message)s'))

119

logger.addHandler(syslogger)

120

121

if debug:

122

console = logging.StreamHandler()

123

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

124

' [%(process)d]:'

125

' %(levelname)s:'

126

' %(message)s'))

127

logger.addHandler(console)

128

logger.setLevel(level)

129

130

131

class PGPError(Exception):

132

"""Exception if encryption/decryption fails"""

133

pass

134

135

136

class PGPEngine(object):

137

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

138

def __init__(self):

139

self.gnupg = GnuPGInterface.GnuPG()

140

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

141

self.gnupg = GnuPGInterface.GnuPG()

142

self.gnupg.options.meta_interactive = False

143

self.gnupg.options.homedir = self.tempdir

144

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

145

'--quiet'])

146

147

def __enter__(self):

148

return self

149

150

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

151

self._cleanup()

152

return False

153

154

def __del__(self):

155

self._cleanup()

156

157

def _cleanup(self):

158

if self.tempdir is not None:

159

# Delete contents of tempdir

160

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

161

topdown = False):

162

for filename in files:

163

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

164

for dirname in dirs:

165

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

166

# Remove tempdir

167

os.rmdir(self.tempdir)

168

self.tempdir = None

169

170

def password_encode(self, password):

171

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

172

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

173

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

174

175

def encrypt(self, data, password):

176

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

177

with open(os.devnull) as devnull:

178

try:

179

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

180

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

181

attach_fhs={'stderr': devnull})

182

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

183

f.write(data)

184

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

185

ciphertext = f.read()

186

proc.wait()

187

except IOError as e:

188

raise PGPError(e)

189

self.gnupg.passphrase = None

190

return ciphertext

191

192

def decrypt(self, data, password):

193

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

194

with open(os.devnull) as devnull:

195

try:

196

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

197

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

198

attach_fhs={'stderr': devnull})

199

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

200

f.write(data)

201

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

202

decrypted_plaintext = f.read()

203

proc.wait()

204

except IOError as e:

205

raise PGPError(e)

206

self.gnupg.passphrase = None

207

return decrypted_plaintext

208

209

92

syslogger.setFormatter(logging.Formatter

93

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

94

' %(message)s'))

95

logger.addHandler(syslogger)

96

97

console = logging.StreamHandler()

98

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

99

' %(levelname)s:'

100

' %(message)s'))

101

logger.addHandler(console)

210

102

211

103

class AvahiError(Exception):

212

104

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

267

159

" after %i retries, exiting.",

268

160

self.rename_count)

269

161

raise AvahiServiceError("Too many renames")

270

self.name = unicode(self.server

271

.GetAlternativeServiceName(self.name))

162

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

272

163

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

273

164

self.name)

165

syslogger.setFormatter(logging.Formatter

166

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

167

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

168

% self.name))

274

169

self.remove()

275

170

try:

276

171

self.add()

296

191

avahi.DBUS_INTERFACE_ENTRY_GROUP)

297

192

self.entry_group_state_changed_match = (

298

193

self.group.connect_to_signal(

299

'StateChanged', self.entry_group_state_changed))

194

'StateChanged', self .entry_group_state_changed))

300

195

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

301

196

self.name, self.type)

302

197

self.group.AddService(

328

223

try:

329

224

self.group.Free()

330

225

except (dbus.exceptions.UnknownMethodException,

331

dbus.exceptions.DBusException):

226

dbus.exceptions.DBusException) as e:

332

227

pass

333

228

self.group = None

334

229

self.remove()

368

263

self.server_state_changed)

369

264

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

370

265

371

class AvahiServiceToSyslog(AvahiService):

372

def rename(self):

373

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

374

ret = AvahiService.rename(self)

375

syslogger.setFormatter(logging.Formatter

376

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

377

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

378

% self.name))

379

return ret

380

266

381

def timedelta_to_milliseconds(td):

267

def _timedelta_to_milliseconds(td):

382

268

"Convert a datetime.timedelta() to milliseconds"

383

269

return ((td.days * 24 * 60 * 60 * 1000)

384

270

+ (td.seconds * 1000)

388

274

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

389

275

390

276

Attributes:

391

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

277

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

392

278

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

393

279

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

394

280

checker: subprocess.Popen(); a running checker process used

401

287

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

402

288

checker_initiator_tag: a gobject event source tag, or None

403

289

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

404

client_structure: Object describing what attributes a client has

405

and is used for storing the client at exit

406

290

current_checker_command: string; current running checker_command

291

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

407

292

disable_initiator_tag: a gobject event source tag, or None

408

293

enabled: bool()

409

294

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

412

297

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

413

298

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

414

299

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

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

300

last_enabled: datetime.datetime(); (UTC)

419

301

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

420

302

D-Bus identifiers

421

303

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

431

313

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

432

314

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

433

315

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

434

client_defaults = { "timeout": "5m",

435

"extended_timeout": "15m",

436

"interval": "2m",

437

"checker": "fping -q -- %%(host)s",

438

"host": "",

439

"approval_delay": "0s",

440

"approval_duration": "1s",

441

"approved_by_default": "True",

442

"enabled": "True",

443

}

444

316

445

317

def timeout_milliseconds(self):

446

318

"Return the 'timeout' attribute in milliseconds"

447

return timedelta_to_milliseconds(self.timeout)

319

return _timedelta_to_milliseconds(self.timeout)

448

320

449

321

def extended_timeout_milliseconds(self):

450

322

"Return the 'extended_timeout' attribute in milliseconds"

451

return timedelta_to_milliseconds(self.extended_timeout)

323

return _timedelta_to_milliseconds(self.extended_timeout)

452

324

453

325

def interval_milliseconds(self):

454

326

"Return the 'interval' attribute in milliseconds"

455

return timedelta_to_milliseconds(self.interval)

327

return _timedelta_to_milliseconds(self.interval)

456

328

457

329

def approval_delay_milliseconds(self):

458

return timedelta_to_milliseconds(self.approval_delay)

459

460

@staticmethod

461

def config_parser(config):

462

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

463

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

464

with exceptions for any special settings as defined above"""

465

settings = {}

466

for client_name in config.sections():

467

section = dict(config.items(client_name))

468

client = settings[client_name] = {}

469

470

client["host"] = section["host"]

471

# Reformat values from string types to Python types

472

client["approved_by_default"] = config.getboolean(

473

client_name, "approved_by_default")

474

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

475

476

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

477

.replace(" ", ""))

478

if "secret" in section:

479

client["secret"] = section["secret"].decode("base64")

480

elif "secfile" in section:

481

with open(os.path.expanduser(os.path.expandvars

482

(section["secfile"])),

483

"rb") as secfile:

484

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

485

else:

486

raise TypeError("No secret or secfile for section %s"

487

% section)

488

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

489

client["extended_timeout"] = string_to_delta(

490

section["extended_timeout"])

491

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

492

client["approval_delay"] = string_to_delta(

493

section["approval_delay"])

494

client["approval_duration"] = string_to_delta(

495

section["approval_duration"])

496

client["checker_command"] = section["checker"]

497

client["last_approval_request"] = None

498

client["last_checked_ok"] = None

499

client["last_checker_status"] = None

500

if client["enabled"]:

501

client["last_enabled"] = datetime.datetime.utcnow()

502

client["expires"] = (datetime.datetime.utcnow()

503

+ client["timeout"])

504

else:

505

client["last_enabled"] = None

506

client["expires"] = None

507

508

return settings

509

510

511

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

330

return _timedelta_to_milliseconds(self.approval_delay)

331

332

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

512

333

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

513

334

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

514

335

attribute."""

515

336

self.name = name

516

# adding all client settings

517

for setting, value in settings.iteritems():

518

setattr(self, setting, value)

519

337

if config is None:

338

config = {}

520

339

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

521

340

# Uppercase and remove spaces from fingerprint for later

522

341

# comparison purposes with return value from the fingerprint()

523

342

# function

343

self.fingerprint = (config["fingerprint"].upper()

344

.replace(" ", ""))

524

345

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

525

self.created = settings.get("created", datetime.datetime.utcnow())

526

527

# attributes specific for this server instance

346

if "secret" in config:

347

self.secret = config["secret"].decode("base64")

348

elif "secfile" in config:

349

with open(os.path.expanduser(os.path.expandvars

350

(config["secfile"])),

351

"rb") as secfile:

352

self.secret = secfile.read()

353

else:

354

raise TypeError("No secret or secfile for client %s"

355

% self.name)

356

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

357

self.created = datetime.datetime.utcnow()

358

self.enabled = False

359

self.last_approval_request = None

360

self.last_enabled = None

361

self.last_checked_ok = None

362

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

363

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

364

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

365

self.disable_hook = disable_hook

528

366

self.checker = None

529

367

self.checker_initiator_tag = None

530

368

self.disable_initiator_tag = None

369

self.expires = None

531

370

self.checker_callback_tag = None

371

self.checker_command = config["checker"]

532

372

self.current_checker_command = None

533

self.approved = None

373

self.last_connect = None

374

self._approved = None

375

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

376

True)

534

377

self.approvals_pending = 0

535

self.changedstate = (multiprocessing_manager

536

.Condition(multiprocessing_manager

537

.Lock()))

538

self.client_structure = [attr for attr in

539

self.__dict__.iterkeys()

540

if not attr.startswith("_")]

541

self.client_structure.append("client_structure")

542

543

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

544

lambda obj:

545

isinstance(obj,

546

property)):

547

if not name.startswith("_"):

548

self.client_structure.append(name)

378

self.approval_delay = string_to_delta(

379

config["approval_delay"])

380

self.approval_duration = string_to_delta(

381

config["approval_duration"])

382

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

549

383

550

# Send notice to process children that client state has changed

551

384

def send_changedstate(self):

552

with self.changedstate:

553

self.changedstate.notify_all()

554

385

self.changedstate.acquire()

386

self.changedstate.notify_all()

387

self.changedstate.release()

388

555

389

def enable(self):

556

390

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

557

391

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

558

392

# Already enabled

559

393

return

560

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

561

401

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

402

self.disable_initiator_tag = (gobject.timeout_add

403

(self.timeout_milliseconds(),

404

self.disable))

562

405

self.enabled = True

563

406

self.last_enabled = datetime.datetime.utcnow()

564

self.init_checker()

407

# Also start a new checker *right now*.

408

self.start_checker()

565

409

566

410

def disable(self, quiet=True):

567

411

"""Disable this client."""

579

423

gobject.source_remove(self.checker_initiator_tag)

580

424

self.checker_initiator_tag = None

581

425

self.stop_checker()

426

if self.disable_hook:

427

self.disable_hook(self)

582

428

self.enabled = False

583

429

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

584

430

return False

585

431

586

432

def __del__(self):

433

self.disable_hook = None

587

434

self.disable()

588

435

589

def init_checker(self):

590

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

591

# and every interval from then on.

592

self.checker_initiator_tag = (gobject.timeout_add

593

(self.interval_milliseconds(),

594

self.start_checker))

595

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

596

self.disable_initiator_tag = (gobject.timeout_add

597

(self.timeout_milliseconds(),

598

self.disable))

599

# Also start a new checker *right now*.

600

self.start_checker()

601

602

436

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

603

437

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

604

438

self.checker_callback_tag = None

605

439

self.checker = None

606

440

if os.WIFEXITED(condition):

607

self.last_checker_status = os.WEXITSTATUS(condition)

608

if self.last_checker_status == 0:

441

exitstatus = os.WEXITSTATUS(condition)

442

if exitstatus == 0:

609

443

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

610

444

vars(self))

611

445

self.checked_ok()

613

447

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

614

448

vars(self))

615

449

else:

616

self.last_checker_status = -1

617

450

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

618

451

vars(self))

619

452

626

459

if timeout is None:

627

460

timeout = self.timeout

628

461

self.last_checked_ok = datetime.datetime.utcnow()

629

if self.disable_initiator_tag is not None:

630

gobject.source_remove(self.disable_initiator_tag)

631

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

632

self.disable_initiator_tag = (gobject.timeout_add

633

(timedelta_to_milliseconds

634

(timeout), self.disable))

635

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))

636

467

637

468

def need_approval(self):

638

469

self.last_approval_request = datetime.datetime.utcnow()

795

626

def _get_all_dbus_properties(self):

796

627

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

797

628

"""

798

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

799

for cls in self.__class__.__mro__

629

return ((prop._dbus_name, prop)

800

630

for name, prop in

801

inspect.getmembers(cls, self._is_dbus_property))

631

inspect.getmembers(self, self._is_dbus_property))

802

632

803

633

def _get_dbus_property(self, interface_name, property_name):

804

634

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

805

635

property with the specified name and interface.

806

636

"""

807

for cls in self.__class__.__mro__:

808

for name, value in (inspect.getmembers

809

(cls, self._is_dbus_property)):

810

if (value._dbus_name == property_name

811

and value._dbus_interface == interface_name):

812

return value.__get__(self)

813

637

for name in (property_name,

638

property_name + "_dbus_property"):

639

prop = getattr(self, name, None)

640

if (prop is None

641

or not self._is_dbus_property(prop)

642

or prop._dbus_name != property_name

643

or (interface_name and prop._dbus_interface

644

and interface_name != prop._dbus_interface)):

645

continue

646

return prop

814

647

# No such property

815

648

raise DBusPropertyNotFound(self.dbus_object_path + ":"

816

649

+ interface_name + "."

853

686

854

687

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

855

688

"""

856

properties = {}

689

all = {}

857

690

for name, prop in self._get_all_dbus_properties():

858

691

if (interface_name

859

692

and interface_name != prop._dbus_interface):

864

697

continue

865

698

value = prop()

866

699

if not hasattr(value, "variant_level"):

867

properties[name] = value

700

all[name] = value

868

701

continue

869

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

870

value.variant_level+1)

871

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

702

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

703

value.variant_level+1)

704

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

872

705

873

706

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

874

707

out_signature="s",

926

759

variant_level=variant_level)

927

760

928

761

929

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

930

.__metaclass__):

931

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

932

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

933

"""

934

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

935

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

936

# methods, signals, or properties in them

937

for base in (b for b in bases

938

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

939

# Go though all attributes of the base class

940

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

941

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

942

# with the wrong interface name

943

if (not hasattr(attribute, "_dbus_interface")

944

or not attribute._dbus_interface

945

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

946

continue

947

# Create an alternate D-Bus interface name based on

948

# the current name

949

alt_interface = (attribute._dbus_interface

950

.replace("se.recompile.Mandos",

951

"se.bsnet.fukt.Mandos"))

952

# Is this a D-Bus signal?

953

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

954

# Extract the original non-method function by

955

# black magic

956

nonmethod_func = (dict(

957

zip(attribute.func_code.co_freevars,

958

attribute.__closure__))["func"]

959

.cell_contents)

960

# Create a new, but exactly alike, function

961

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

962

# with the alternate D-Bus interface name

963

new_function = (dbus.service.signal

964

(alt_interface,

965

attribute._dbus_signature)

966

(types.FunctionType(

967

nonmethod_func.func_code,

968

nonmethod_func.func_globals,

969

nonmethod_func.func_name,

970

nonmethod_func.func_defaults,

971

nonmethod_func.func_closure)))

972

# Define a creator of a function to call both the

973

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

974

# signals gets sent when the function is called

975

def fixscope(func1, func2):

976

"""This function is a scope container to pass

977

func1 and func2 to the "call_both" function

978

outside of its arguments"""

979

def call_both(*args, **kwargs):

980

"""This function will emit two D-Bus

981

signals by calling func1 and func2"""

982

func1(*args, **kwargs)

983

func2(*args, **kwargs)

984

return call_both

985

# Create the "call_both" function and add it to

986

# the class

987

attr[attrname] = fixscope(attribute,

988

new_function)

989

# Is this a D-Bus method?

990

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

991

# Create a new, but exactly alike, function

992

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

993

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

994

# to the class.

995

attr[attrname] = (dbus.service.method

996

(alt_interface,

997

attribute._dbus_in_signature,

998

attribute._dbus_out_signature)

999

(types.FunctionType

1000

(attribute.func_code,

1001

attribute.func_globals,

1002

attribute.func_name,

1003

attribute.func_defaults,

1004

attribute.func_closure)))

1005

# Is this a D-Bus property?

1006

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

1007

# Create a new, but exactly alike, function

1008

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

1009

# property with the alternate D-Bus interface

1010

# name. Add it to the class.

1011

attr[attrname] = (dbus_service_property

1012

(alt_interface,

1013

attribute._dbus_signature,

1014

attribute._dbus_access,

1015

attribute

1016

._dbus_get_args_options

1017

["byte_arrays"])

1018

(types.FunctionType

1019

(attribute.func_code,

1020

attribute.func_globals,

1021

attribute.func_name,

1022

attribute.func_defaults,

1023

attribute.func_closure)))

1024

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

1025

1026

1027

762

class ClientDBus(Client, DBusObjectWithProperties):

1028

763

"""A Client class using D-Bus

1029

764

1038

773

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

1039

774

1040

775

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

776

self._approvals_pending = 0

1041

777

self.bus = bus

1042

778

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

1043

self._approvals_pending = 0

1044

1045

self._approvals_pending = 0

1046

779

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

1047

780

# the D-Bus

1048

781

client_object_name = unicode(self.name).translate(

1056

789

def notifychangeproperty(transform_func,

1057

790

dbus_name, type_func=lambda x: x,

1058

791

variant_level=1):

1059

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

1060

its changes to DBus.

1061

1062

transform_fun: Function that takes a value and a variant_level

1063

and transforms it to a D-Bus type.

1064

dbus_name: D-Bus name of the variable

792

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

793

changes to DBus.

794

transform_fun: Function that takes a value and transform it to

795

DBus type.

796

dbus_name: DBus name of the variable

1065

797

type_func: Function that transform the value before sending it

1066

to the D-Bus. Default: no transform

1067

variant_level: D-Bus variant level. Default: 1

798

to DBus

799

variant_level: DBus variant level. default: 1

1068

800

"""

1069

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

801

real_value = [None,]

1070

802

def setter(self, value):

803

old_value = real_value[0]

804

real_value[0] = value

1071

805

if hasattr(self, "dbus_object_path"):

1072

if (not hasattr(self, attrname) or

1073

type_func(getattr(self, attrname, None))

1074

!= type_func(value)):

1075

dbus_value = transform_func(type_func(value),

1076

variant_level

1077

=variant_level)

806

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

807

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

808

variant_level)

1078

809

self.PropertyChanged(dbus.String(dbus_name),

1079

810

dbus_value)

1080

setattr(self, attrname, value)

1081

811

1082

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

812

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

1083

813

1084

814

1085

815

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1090

820

last_enabled = notifychangeproperty(datetime_to_dbus,

1091

821

"LastEnabled")

1092

822

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

1093

type_func = lambda checker:

1094

checker is not None)

823

type_func = lambda checker: checker is not None)

1095

824

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1096

825

"LastCheckedOK")

1097

last_approval_request = notifychangeproperty(

1098

datetime_to_dbus, "LastApprovalRequest")

826

last_approval_request = notifychangeproperty(datetime_to_dbus,

827

"LastApprovalRequest")

1099

828

approved_by_default = notifychangeproperty(dbus.Boolean,

1100

829

"ApprovedByDefault")

1101

approval_delay = notifychangeproperty(dbus.UInt64,

1102

"ApprovalDelay",

1103

type_func =

1104

timedelta_to_milliseconds)

1105

approval_duration = notifychangeproperty(

1106

dbus.UInt64, "ApprovalDuration",

1107

type_func = timedelta_to_milliseconds)

830

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

831

type_func = _timedelta_to_milliseconds)

832

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

833

type_func = _timedelta_to_milliseconds)

1108

834

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

1109

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

1110

type_func =

1111

timedelta_to_milliseconds)

1112

extended_timeout = notifychangeproperty(

1113

dbus.UInt64, "ExtendedTimeout",

1114

type_func = timedelta_to_milliseconds)

1115

interval = notifychangeproperty(dbus.UInt64,

1116

"Interval",

1117

type_func =

1118

timedelta_to_milliseconds)

835

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

836

type_func = _timedelta_to_milliseconds)

837

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

838

type_func = _timedelta_to_milliseconds)

839

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

840

type_func = _timedelta_to_milliseconds)

1119

841

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

1120

842

1121

843

del notifychangeproperty

1163

885

return r

1164

886

1165

887

def _reset_approved(self):

1166

self.approved = None

888

self._approved = None

1167

889

return False

1168

890

1169

891

def approve(self, value=True):

1170

892

self.send_changedstate()

1171

self.approved = value

1172

gobject.timeout_add(timedelta_to_milliseconds

893

self._approved = value

894

gobject.timeout_add(_timedelta_to_milliseconds

1173

895

(self.approval_duration),

1174

896

self._reset_approved)

1175

897

1176

898

1177

899

## D-Bus methods, signals & properties

1178

_interface = "se.recompile.Mandos.Client"

900

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

1179

901

1180

902

## Signals

1181

903

1218

940

"D-Bus signal"

1219

941

return self.need_approval()

1220

942

1221

# NeRwequest - signal

1222

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

1223

def NewRequest(self, ip):

1224

"""D-Bus signal

1225

Is sent after a client request a password.

1226

"""

1227

pass

1228

1229

943

## Methods

1230

944

1231

945

# Approve - method

1289

1003

access="readwrite")

1290

1004

def ApprovalDuration_dbus_property(self, value=None):

1291

1005

if value is None: # get

1292

return dbus.UInt64(timedelta_to_milliseconds(

1006

return dbus.UInt64(_timedelta_to_milliseconds(

1293

1007

self.approval_duration))

1294

1008

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

1295

1009

1309

1023

def Host_dbus_property(self, value=None):

1310

1024

if value is None: # get

1311

1025

return dbus.String(self.host)

1312

self.host = unicode(value)

1026

self.host = value

1313

1027

1314

1028

# Created - property

1315

1029

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

1316

1030

def Created_dbus_property(self):

1317

return datetime_to_dbus(self.created)

1031

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

1318

1032

1319

1033

# LastEnabled - property

1320

1034

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

1364

1078

gobject.source_remove(self.disable_initiator_tag)

1365

1079

self.disable_initiator_tag = None

1366

1080

self.expires = None

1367

time_to_die = timedelta_to_milliseconds((self

1368

.last_checked_ok

1369

+ self.timeout)

1370

- datetime.datetime

1371

.utcnow())

1081

time_to_die = (self.

1082

_timedelta_to_milliseconds((self

1083

.last_checked_ok

1084

+ self.timeout)

1085

- datetime.datetime

1086

.utcnow()))

1372

1087

if time_to_die <= 0:

1373

1088

# The timeout has passed

1374

1089

self.disable()

1375

1090

else:

1376

1091

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

1377

+ datetime.timedelta(milliseconds =

1378

time_to_die))

1092

+ datetime.timedelta(milliseconds = time_to_die))

1379

1093

self.disable_initiator_tag = (gobject.timeout_add

1380

1094

(time_to_die, self.disable))

1381

1095

1396

1110

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

1397

1111

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

1398

1112

return

1399

if self.enabled:

1400

# Reschedule checker run

1401

gobject.source_remove(self.checker_initiator_tag)

1402

self.checker_initiator_tag = (gobject.timeout_add

1403

(value, self.start_checker))

1404

self.start_checker() # Start one now, too

1113

# Reschedule checker run

1114

gobject.source_remove(self.checker_initiator_tag)

1115

self.checker_initiator_tag = (gobject.timeout_add

1116

(value, self.start_checker))

1117

self.start_checker() # Start one now, too

1405

1118

1406

1119

# Checker - property

1407

1120

@dbus_service_property(_interface, signature="s",

1409

1122

def Checker_dbus_property(self, value=None):

1410

1123

if value is None: # get

1411

1124

return dbus.String(self.checker_command)

1412

self.checker_command = unicode(value)

1125

self.checker_command = value

1413

1126

1414

1127

# CheckerRunning - property

1415

1128

@dbus_service_property(_interface, signature="b",

1444

1157

raise KeyError()

1445

1158

1446

1159

def __getattribute__(self, name):

1447

if name == '_pipe':

1160

if(name == '_pipe'):

1448

1161

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

1449

1162

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

1450

1163

data = self._pipe.recv()

1457

1170

return func

1458

1171

1459

1172

def __setattr__(self, name, value):

1460

if name == '_pipe':

1173

if(name == '_pipe'):

1461

1174

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

1462

1175

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

1463

1176

1464

1177

1465

class ClientDBusTransitional(ClientDBus):

1466

__metaclass__ = AlternateDBusNamesMetaclass

1467

1468

1469

1178

class ClientHandler(socketserver.BaseRequestHandler, object):

1470

1179

"""A class to handle client connections.

1471

1180

1539

1248

except KeyError:

1540

1249

return

1541

1250

1542

if self.server.use_dbus:

1543

# Emit D-Bus signal

1544

client.NewRequest(str(self.client_address))

1545

1546

1251

if client.approval_delay:

1547

1252

delay = client.approval_delay

1548

1253

client.approvals_pending += 1

1554

1259

client.name)

1555

1260

if self.server.use_dbus:

1556

1261

# Emit D-Bus signal

1557

client.Rejected("Disabled")

1262

client.Rejected("Disabled")

1558

1263

return

1559

1264

1560

if client.approved or not client.approval_delay:

1265

if client._approved or not client.approval_delay:

1561

1266

#We are approved or approval is disabled

1562

1267

break

1563

elif client.approved is None:

1268

elif client._approved is None:

1564

1269

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

1565

1270

client.name)

1566

1271

if self.server.use_dbus:

1577

1282

return

1578

1283

1579

1284

#wait until timeout or approved

1285

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

1580

1286

time = datetime.datetime.now()

1581

1287

client.changedstate.acquire()

1582

(client.changedstate.wait

1583

(float(client.timedelta_to_milliseconds(delay)

1584

/ 1000)))

1288

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

1585

1289

client.changedstate.release()

1586

1290

time2 = datetime.datetime.now()

1587

1291

if (time2 - time) >= delay:

1611

1315

sent_size += sent

1612

1316

1613

1317

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

1614

# bump the timeout using extended_timeout

1318

# bump the timeout as if seen

1615

1319

client.checked_ok(client.extended_timeout)

1616

1320

if self.server.use_dbus:

1617

1321

# Emit D-Bus signal

1685

1389

# Convert the buffer to a Python bytestring

1686

1390

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

1687

1391

# Convert the bytestring to hexadecimal notation

1688

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

1392

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

1689

1393

return hex_fpr

1690

1394

1691

1395

1694

1398

def sub_process_main(self, request, address):

1695

1399

try:

1696

1400

self.finish_request(request, address)

1697

except Exception:

1401

except:

1698

1402

self.handle_error(request, address)

1699

1403

self.close_request(request)

1700

1404

1701

1405

def process_request(self, request, address):

1702

1406

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

1703

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

1704

args = (request,

1705

address))

1706

proc.start()

1707

return proc

1407

multiprocessing.Process(target = self.sub_process_main,

1408

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

1708

1409

1709

1410

1710

1411

class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):

1716

1417

"""

1717

1418

parent_pipe, self.child_pipe = multiprocessing.Pipe()

1718

1419

1719

proc = MultiprocessingMixIn.process_request(self, request,

1720

client_address)

1420

super(MultiprocessingMixInWithPipe,

1421

self).process_request(request, client_address)

1721

1422

self.child_pipe.close()

1722

self.add_pipe(parent_pipe, proc)

1423

self.add_pipe(parent_pipe)

1723

1424

1724

def add_pipe(self, parent_pipe, proc):

1425

def add_pipe(self, parent_pipe):

1725

1426

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

1726

1427

raise NotImplementedError

1727

1428

1805

1506

self.enabled = False

1806

1507

self.clients = clients

1807

1508

if self.clients is None:

1808

self.clients = {}

1509

self.clients = set()

1809

1510

self.use_dbus = use_dbus

1810

1511

self.gnutls_priority = gnutls_priority

1811

1512

IPv6_TCPServer.__init__(self, server_address,

1815

1516

def server_activate(self):

1816

1517

if self.enabled:

1817

1518

return socketserver.TCPServer.server_activate(self)

1818

1819

1519

def enable(self):

1820

1520

self.enabled = True

1821

1822

def add_pipe(self, parent_pipe, proc):

1521

def add_pipe(self, parent_pipe):

1823

1522

# Call "handle_ipc" for both data and EOF events

1824

1523

gobject.io_add_watch(parent_pipe.fileno(),

1825

1524

gobject.IO_IN | gobject.IO_HUP,

1826

1525

functools.partial(self.handle_ipc,

1827

parent_pipe =

1828

parent_pipe,

1829

proc = proc))

1830

1526

parent_pipe = parent_pipe))

1527

1831

1528

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

1832

proc = None, client_object=None):

1529

client_object=None):

1833

1530

condition_names = {

1834

1531

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

1835

1532

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

1844

1541

for cond, name in

1845

1542

condition_names.iteritems()

1846

1543

if cond & condition)

1847

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

1544

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

1848

1545

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

1849

# Wait for other process to exit

1850

proc.join()

1851

1546

return False

1852

1547

1853

1548

# Read a request from the child

1858

1553

fpr = request[1]

1859

1554

address = request[2]

1860

1555

1861

for c in self.clients.itervalues():

1556

for c in self.clients:

1862

1557

if c.fingerprint == fpr:

1863

1558

client = c

1864

1559

break

1867

1562

"dress: %s", fpr, address)

1868

1563

if self.use_dbus:

1869

1564

# Emit D-Bus signal

1870

mandos_dbus_service.ClientNotFound(fpr,

1871

address[0])

1565

mandos_dbus_service.ClientNotFound(fpr, address[0])

1872

1566

parent_pipe.send(False)

1873

1567

return False

1874

1568

1875

1569

gobject.io_add_watch(parent_pipe.fileno(),

1876

1570

gobject.IO_IN | gobject.IO_HUP,

1877

1571

functools.partial(self.handle_ipc,

1878

parent_pipe =

1879

parent_pipe,

1880

proc = proc,

1881

client_object =

1882

client))

1572

parent_pipe = parent_pipe,

1573

client_object = client))

1883

1574

parent_pipe.send(True)

1884

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

1885

# same fileno

1575

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

1886

1576

return False

1887

1577

if command == 'funcall':

1888

1578

funcname = request[1]

1889

1579

args = request[2]

1890

1580

kwargs = request[3]

1891

1581

1892

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

1893

funcname)(*args,

1894

**kwargs)))

1582

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

1895

1583

1896

1584

if command == 'getattr':

1897

1585

attrname = request[1]

1898

1586

if callable(client_object.__getattribute__(attrname)):

1899

1587

parent_pipe.send(('function',))

1900

1588

else:

1901

parent_pipe.send(('data', client_object

1902

.__getattribute__(attrname)))

1589

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

1903

1590

1904

1591

if command == 'setattr':

1905

1592

attrname = request[1]

1948

1635

return timevalue

1949

1636

1950

1637

1638

def if_nametoindex(interface):

1639

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

1640

1641

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

1642

global if_nametoindex

1643

try:

1644

if_nametoindex = (ctypes.cdll.LoadLibrary

1645

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

1646

.if_nametoindex)

1647

except (OSError, AttributeError):

1648

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

1649

def if_nametoindex(interface):

1650

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

1651

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

1652

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

1653

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1654

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

1655

interface))

1656

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

1657

ifreq[16:20])[0]

1658

return interface_index

1659

return if_nametoindex(interface)

1660

1661

1951

1662

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

1952

1663

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

1953

1664

2008

1719

" system bus interface")

2009

1720

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

2010

1721

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

2011

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

2012

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

2013

" state")

2014

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

2015

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

2016

2017

1722

options = parser.parse_args()

2018

1723

2019

1724

if options.check:

2032

1737

"use_dbus": "True",

2033

1738

"use_ipv6": "True",

2034

1739

"debuglevel": "",

2035

"restore": "True",

2036

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

2037

1740

}

2038

1741

2039

1742

# Parse config file for server-global settings

2056

1759

# options, if set.

2057

1760

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

2058

1761

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

2059

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

2060

"statedir"):

1762

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

2061

1763

value = getattr(options, option)

2062

1764

if value is not None:

2063

1765

server_settings[option] = value

2075

1777

debuglevel = server_settings["debuglevel"]

2076

1778

use_dbus = server_settings["use_dbus"]

2077

1779

use_ipv6 = server_settings["use_ipv6"]

2078

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

2079

stored_state_file)

2080

2081

if debug:

2082

initlogger(debug, logging.DEBUG)

2083

else:

2084

if not debuglevel:

2085

initlogger(debug)

2086

else:

2087

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

2088

initlogger(debug, level)

2089

1780

2090

1781

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

2091

1782

syslogger.setFormatter(logging.Formatter

2094

1785

% server_settings["servicename"]))

2095

1786

2096

1787

# Parse config file with clients

2097

client_config = configparser.SafeConfigParser(Client.client_defaults)

1788

client_defaults = { "timeout": "5m",

1789

"extended_timeout": "15m",

1790

"interval": "2m",

1791

"checker": "fping -q -- %%(host)s",

1792

"host": "",

1793

"approval_delay": "0s",

1794

"approval_duration": "1s",

1795

}

1796

client_config = configparser.SafeConfigParser(client_defaults)

2098

1797

client_config.read(os.path.join(server_settings["configdir"],

2099

1798

"clients.conf"))

2100

1799

2138

1837

if error[0] != errno.EPERM:

2139

1838

raise error

2140

1839

1840

if not debug and not debuglevel:

1841

syslogger.setLevel(logging.WARNING)

1842

console.setLevel(logging.WARNING)

1843

if debuglevel:

1844

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

1845

syslogger.setLevel(level)

1846

console.setLevel(level)

1847

2141

1848

if debug:

2142

1849

# Enable all possible GnuTLS debugging

2143

1850

2157

1864

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

2158

1865

if null > 2:

2159

1866

os.close(null)

1867

else:

1868

# No console logging

1869

logger.removeHandler(console)

2160

1870

2161

1871

# Need to fork before connecting to D-Bus

2162

1872

if not debug:

2163

1873

# Close all input and output, do double fork, etc.

2164

1874

daemon()

2165

1875

2166

gobject.threads_init()

2167

2168

1876

global main_loop

2169

1877

# From the Avahi example code

2170

1878

DBusGMainLoop(set_as_default=True )

2173

1881

# End of Avahi example code

2174

1882

if use_dbus:

2175

1883

try:

2176

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

1884

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

2177

1885

bus, do_not_queue=True)

2178

old_bus_name = (dbus.service.BusName

2179

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

2180

do_not_queue=True))

2181

1886

except dbus.exceptions.NameExistsException as e:

2182

1887

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

2183

1888

use_dbus = False

2184

1889

server_settings["use_dbus"] = False

2185

1890

tcp_server.use_dbus = False

2186

1891

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2187

service = AvahiServiceToSyslog(name =

2188

server_settings["servicename"],

2189

servicetype = "_mandos._tcp",

2190

protocol = protocol, bus = bus)

1892

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

1893

servicetype = "_mandos._tcp",

1894

protocol = protocol, bus = bus)

2191

1895

if server_settings["interface"]:

2192

1896

service.interface = (if_nametoindex

2193

1897

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

2197

1901

2198

1902

client_class = Client

2199

1903

if use_dbus:

2200

client_class = functools.partial(ClientDBusTransitional,

2201

bus = bus)

2202

2203

client_settings = Client.config_parser(client_config)

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

except EOFError as e:

2220

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

2221

"EOFError: {0}".format(e))

2222

2223

with PGPEngine() as pgp:

2224

for client_name, client in clients_data.iteritems():

2225

# Decide which value to use after restoring saved state.

2226

# We have three different values: Old config file,

2227

# new config file, and saved state.

2228

# New config value takes precedence if it differs from old

2229

# config value, otherwise use saved state.

2230

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

2231

try:

2232

# For each value in new config, check if it

2233

# differs from the old config value (Except for

2234

# the "secret" attribute)

2235

if (name != "secret" and

2236

value != old_client_settings[client_name]

2237

[name]):

2238

client[name] = value

2239

except KeyError:

2240

pass

2241

2242

# Clients who has passed its expire date can still be

2243

# enabled if its last checker was successful. Clients

2244

# whose checker failed before we stored its state is

2245

# assumed to have failed all checkers during downtime.

2246

if client["enabled"]:

2247

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

2248

if not client["last_checked_ok"]:

2249

logger.warning(

2250

"disabling client {0} - Client never "

2251

"performed a successfull checker"

2252

.format(client["name"]))

2253

client["enabled"] = False

2254

elif client["last_checker_status"] != 0:

2255

logger.warning(

2256

"disabling client {0} - Client "

2257

"last checker failed with error code {1}"

2258

.format(client["name"],

2259

client["last_checker_status"]))

2260

client["enabled"] = False

2261

else:

2262

client["expires"] = (datetime.datetime

2263

.utcnow()

2264

+ client["timeout"])

2265

1904

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

1905

def client_config_items(config, section):

1906

special_settings = {

1907

"approved_by_default":

1908

lambda: config.getboolean(section,

1909

"approved_by_default"),

1910

}

1911

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

2266

1912

try:

2267

client["secret"] = (

2268

pgp.decrypt(client["encrypted_secret"],

2269

client_settings[client_name]

2270

["secret"]))

2271

except PGPError:

2272

# If decryption fails, we use secret from new settings

2273

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

2274

.format(client_name))

2275

client["secret"] = (

2276

client_settings[client_name]["secret"])

2277

2278

2279

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

2280

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

2281

del clients_data[client_name]

2282

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

2283

clients_data[client_name] = client_settings[client_name]

2284

2285

# Create clients all clients

2286

for client_name, client in clients_data.iteritems():

2287

tcp_server.clients[client_name] = client_class(

2288

name = client_name, settings = client)

2289

1913

yield (name, special_settings[name]())

1914

except KeyError:

1915

yield (name, value)

1916

1917

tcp_server.clients.update(set(

1918

client_class(name = section,

1919

config= dict(client_config_items(

1920

client_config, section)))

1921

for section in client_config.sections()))

2290

1922

if not tcp_server.clients:

2291

1923

logger.warning("No clients defined")

2292

1924

2303

1935

# "pidfile" was never created

2304

1936

pass

2305

1937

del pidfilename

1938

2306

1939

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

2307

1940

2308

1941

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

2313

1946

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

2314

1947

def __init__(self):

2315

1948

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

2316

_interface = "se.recompile.Mandos"

1949

_interface = "se.bsnet.fukt.Mandos"

2317

1950

2318

1951

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

2319

1952

def ClientAdded(self, objpath):

2334

1967

def GetAllClients(self):

2335

1968

"D-Bus method"

2336

1969

return dbus.Array(c.dbus_object_path

2337

for c in

2338

tcp_server.clients.itervalues())

1970

for c in tcp_server.clients)

2339

1971

2340

1972

@dbus.service.method(_interface,

2341

1973

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

2343

1975

"D-Bus method"

2344

1976

return dbus.Dictionary(

2345

1977

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

2346

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

1978

for c in tcp_server.clients),

2347

1979

signature="oa{sv}")

2348

1980

2349

1981

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

2350

1982

def RemoveClient(self, object_path):

2351

1983

"D-Bus method"

2352

for c in tcp_server.clients.itervalues():

1984

for c in tcp_server.clients:

2353

1985

if c.dbus_object_path == object_path:

2354

del tcp_server.clients[c.name]

1986

tcp_server.clients.remove(c)

2355

1987

c.remove_from_connection()

2356

1988

# Don't signal anything except ClientRemoved

2357

1989

c.disable(quiet=True)

2362

1994

2363

1995

del _interface

2364

1996

2365

class MandosDBusServiceTransitional(MandosDBusService):

2366

__metaclass__ = AlternateDBusNamesMetaclass

2367

mandos_dbus_service = MandosDBusServiceTransitional()

1997

mandos_dbus_service = MandosDBusService()

2368

1998

2369

1999

def cleanup():

2370

2000

"Cleanup function; run on exit"

2371

2001

service.cleanup()

2372

2002

2373

multiprocessing.active_children()

2374

if not (tcp_server.clients or client_settings):

2375

return

2376

2377

# Store client before exiting. Secrets are encrypted with key

2378

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

2379

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

2380

clients = {}

2381

with PGPEngine() as pgp:

2382

for client in tcp_server.clients.itervalues():

2383

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

2384

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

2385

key)

2386

client_dict = {}

2387

2388

# A list of attributes that can not be pickled

2389

# + secret.

2390

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

2391

"checker"))

2392

for name, typ in (inspect.getmembers

2393

(dbus.service.Object)):

2394

exclude.add(name)

2395

2396

client_dict["encrypted_secret"] = (client

2397

.encrypted_secret)

2398

for attr in client.client_structure:

2399

if attr not in exclude:

2400

client_dict[attr] = getattr(client, attr)

2401

2402

clients[client.name] = client_dict

2403

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

2404

2405

try:

2406

tempfd, tempname = tempfile.mkstemp(suffix=".pickle",

2407

prefix="clients-",

2408

dir=os.path.dirname

2409

(stored_state_path))

2410

with os.fdopen(tempfd, "wb") as stored_state:

2411

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

2412

os.rename(tempname, stored_state_path)

2413

except (IOError, OSError) as e:

2414

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

2415

.format(e))

2416

if not debug:

2417

try:

2418

os.remove(tempname)

2419

except NameError:

2420

pass

2421

if e.errno not in set((errno.ENOENT, errno.EACCES,

2422

errno.EEXIST)):

2423

raise e

2424

2425

# Delete all clients, and settings from config

2426

2003

while tcp_server.clients:

2427

name, client = tcp_server.clients.popitem()

2004

client = tcp_server.clients.pop()

2428

2005

if use_dbus:

2429

2006

client.remove_from_connection()

2007

client.disable_hook = None

2430

2008

# Don't signal anything except ClientRemoved

2431

2009

client.disable(quiet=True)

2432

2010

if use_dbus:

2433

2011

# Emit D-Bus signal

2434

mandos_dbus_service.ClientRemoved(client

2435

.dbus_object_path,

2012

mandos_dbus_service.ClientRemoved(client.dbus_object_path,

2436

2013

client.name)

2437

client_settings.clear()

2438

2014

2439

2015

atexit.register(cleanup)

2440

2016

2441

for client in tcp_server.clients.itervalues():

2017

for client in tcp_server.clients:

2442

2018

if use_dbus:

2443

2019

# Emit D-Bus signal

2444

2020

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2445

# Need to initiate checking of clients

2446

if client.enabled:

2447

client.init_checker()

2021

client.enable()

2448

2022

2449

2023

tcp_server.enable()

2450

2024

tcp_server.server_activate()

2490

2064

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

2491

2065

cleanup()

2492

2066

2067

2493

2068

if __name__ == '__main__':

2494

2069

main()