/mandos/release : revision 237.7.154

11

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

12

#

13

# Everything else is

14

15

14

15

16

#

17

# This program is free software: you can redistribute it and/or modify

18

# it under the terms of the GNU General Public License as published by

34

from __future__ import (division, absolute_import, print_function,

35

unicode_literals)

36

37

from future_builtins import *

38

37

39

import SocketServer as socketserver

38

40

import socket

39

41

import argparse

65

67

import types

66

68

import binascii

67

69

import tempfile

70

import itertools

68

71

69

72

import dbus

70

73

import dbus.service

85

88

except ImportError:

86

89

SO_BINDTODEVICE = None

87

90

88

version = "1.4.1"

91

version = "1.5.5"

89

92

stored_state_file = "clients.pickle"

90

93

91

94

logger = logging.getLogger()

142

145

self.gnupg.options.meta_interactive = False

143

146

self.gnupg.options.homedir = self.tempdir

144

147

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

145

'--quiet'])

148

'--quiet',

149

'--no-use-agent'])

146

150

147

151

def __enter__(self):

148

152

return self

149

153

150

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

154

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

151

155

self._cleanup()

152

156

return False

153

157

174

178

175

179

def encrypt(self, data, password):

176

180

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

177

with open(os.devnull) as devnull:

181

with open(os.devnull, "w") as devnull:

178

182

try:

179

183

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

180

184

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

191

195

192

196

def decrypt(self, data, password):

193

197

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

194

with open(os.devnull) as devnull:

198

with open(os.devnull, "w") as devnull:

195

199

try:

196

200

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

197

201

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

198

202

attach_fhs={'stderr': devnull})

199

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

203

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

200

204

f.write(data)

201

205

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

202

206

decrypted_plaintext = f.read()

207

211

return decrypted_plaintext

208

212

209

213

210

211

214

class AvahiError(Exception):

212

215

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

213

216

self.value = value

242

245

server: D-Bus Server

243

246

bus: dbus.SystemBus()

244

247

"""

248

245

249

def __init__(self, interface = avahi.IF_UNSPEC, name = None,

246

250

servicetype = None, port = None, TXT = None,

247

251

domain = "", host = "", max_renames = 32768,

260

264

self.server = None

261

265

self.bus = bus

262

266

self.entry_group_state_changed_match = None

267

263

268

def rename(self):

264

269

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

265

270

if self.rename_count >= self.max_renames:

275

280

try:

276

281

self.add()

277

282

except dbus.exceptions.DBusException as error:

278

logger.critical("DBusException: %s", error)

283

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

279

284

self.cleanup()

280

285

os._exit(1)

281

286

self.rename_count += 1

287

282

288

def remove(self):

283

289

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

284

290

if self.entry_group_state_changed_match is not None:

286

292

self.entry_group_state_changed_match = None

287

293

if self.group is not None:

288

294

self.group.Reset()

295

289

296

def add(self):

290

297

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

291

298

self.remove()

308

315

dbus.UInt16(self.port),

309

316

avahi.string_array_to_txt_array(self.TXT))

310

317

self.group.Commit()

318

311

319

def entry_group_state_changed(self, state, error):

312

320

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

313

321

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

320

328

elif state == avahi.ENTRY_GROUP_FAILURE:

321

329

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

322

330

unicode(error))

323

raise AvahiGroupError("State changed: %s"

324

% unicode(error))

331

raise AvahiGroupError("State changed: {0!s}"

332

.format(error))

333

325

334

def cleanup(self):

326

335

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

327

336

if self.group is not None:

332

341

pass

333

342

self.group = None

334

343

self.remove()

344

335

345

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

336

346

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

337

347

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

356

366

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

357

367

else:

358

368

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

369

359

370

def activate(self):

360

371

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

361

372

if self.server is None:

368

379

self.server_state_changed)

369

380

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

370

381

382

371

383

class AvahiServiceToSyslog(AvahiService):

372

384

def rename(self):

373

385

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

374

386

ret = AvahiService.rename(self)

375

387

syslogger.setFormatter(logging.Formatter

376

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

377

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

378

% self.name))

388

('Mandos ({0}) [%(process)d]:'

389

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

390

.format(self.name)))

379

391

return ret

380

392

393

381

394

def timedelta_to_milliseconds(td):

382

395

"Convert a datetime.timedelta() to milliseconds"

383

396

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

384

397

+ (td.seconds * 1000)

385

398

+ (td.microseconds // 1000))

386

399

400

387

401

class Client(object):

388

402

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

389

403

414

428

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

415

429

last_checker_status: integer between 0 and 255 reflecting exit

416

430

status of last checker. -1 reflects crashed

417

checker, or None.

431

checker, -2 means no checker completed yet.

418

432

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

419

433

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

420

434

D-Bus identifiers

421

435

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

422

436

timeout: datetime.timedelta(); How long from last_checked_ok

423

437

until this client is disabled

424

extended_timeout: extra long timeout when password has been sent

438

extended_timeout: extra long timeout when secret has been sent

425

439

runtime_expansions: Allowed attributes for runtime expansion.

426

440

expires: datetime.datetime(); time (UTC) when a client will be

427

441

disabled, or None

428

442

"""

429

443

430

444

runtime_expansions = ("approval_delay", "approval_duration",

431

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

432

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

445

"created", "enabled", "expires",

446

"fingerprint", "host", "interval",

447

"last_approval_request", "last_checked_ok",

433

448

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

434

449

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

435

450

"extended_timeout": "15m",

456

471

457

472

def approval_delay_milliseconds(self):

458

473

return timedelta_to_milliseconds(self.approval_delay)

459

474

460

475

@staticmethod

461

476

def config_parser(config):

462

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

477

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

463

478

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

464

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

479

with exceptions for any special settings as defined above.

480

NOTE: Must be a pure function. Must return the same result

481

value given the same arguments.

482

"""

465

483

settings = {}

466

484

for client_name in config.sections():

467

485

section = dict(config.items(client_name))

471

489

# Reformat values from string types to Python types

472

490

client["approved_by_default"] = config.getboolean(

473

491

client_name, "approved_by_default")

474

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

492

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

493

"enabled")

475

494

476

495

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

477

496

.replace(" ", ""))

483

502

"rb") as secfile:

484

503

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

485

504

else:

486

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

487

% section)

505

raise TypeError("No secret or secfile for section {0}"

506

.format(section))

488

507

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

489

508

client["extended_timeout"] = string_to_delta(

490

509

section["extended_timeout"])

496

515

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

497

516

client["last_approval_request"] = None

498

517

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

518

client["last_checker_status"] = -2

519

508

520

return settings

509

510

521

511

522

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

512

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

513

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

514

attribute."""

515

523

self.name = name

516

524

# adding all client settings

517

525

for setting, value in settings.iteritems():

518

526

setattr(self, setting, value)

519

527

528

if self.enabled:

529

if not hasattr(self, "last_enabled"):

530

self.last_enabled = datetime.datetime.utcnow()

531

if not hasattr(self, "expires"):

532

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

533

+ self.timeout)

534

else:

535

self.last_enabled = None

536

self.expires = None

537

520

538

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

521

539

# Uppercase and remove spaces from fingerprint for later

522

540

# comparison purposes with return value from the fingerprint()

523

541

# function

524

542

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

525

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

526

543

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

544

datetime.datetime.utcnow())

545

527

546

# attributes specific for this server instance

528

547

self.checker = None

529

548

self.checker_initiator_tag = None

557

576

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

558

577

# Already enabled

559

578

return

560

self.send_changedstate()

561

579

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

562

580

self.enabled = True

563

581

self.last_enabled = datetime.datetime.utcnow()

564

582

self.init_checker()

583

self.send_changedstate()

565

584

566

585

def disable(self, quiet=True):

567

586

"""Disable this client."""

568

587

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

569

588

return False

570

589

if not quiet:

571

self.send_changedstate()

572

if not quiet:

573

590

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

574

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

591

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

575

592

gobject.source_remove(self.disable_initiator_tag)

576

593

self.disable_initiator_tag = None

577

594

self.expires = None

578

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

595

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

579

596

gobject.source_remove(self.checker_initiator_tag)

580

597

self.checker_initiator_tag = None

581

598

self.stop_checker()

582

599

self.enabled = False

600

if not quiet:

601

self.send_changedstate()

583

602

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

584

603

return False

585

604

589

608

def init_checker(self):

590

609

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

591

610

# and every interval from then on.

611

if self.checker_initiator_tag is not None:

612

gobject.source_remove(self.checker_initiator_tag)

592

613

self.checker_initiator_tag = (gobject.timeout_add

593

614

(self.interval_milliseconds(),

594

615

self.start_checker))

595

616

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

617

if self.disable_initiator_tag is not None:

618

gobject.source_remove(self.disable_initiator_tag)

596

619

self.disable_initiator_tag = (gobject.timeout_add

597

620

(self.timeout_milliseconds(),

598

621

self.disable))

617

640

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

618

641

vars(self))

619

642

620

def checked_ok(self, timeout=None):

621

"""Bump up the timeout for this client.

622

623

This should only be called when the client has been seen,

624

alive and well.

625

"""

643

def checked_ok(self):

644

"""Assert that the client has been seen, alive and well."""

645

self.last_checked_ok = datetime.datetime.utcnow()

646

self.last_checker_status = 0

647

self.bump_timeout()

648

649

def bump_timeout(self, timeout=None):

650

"""Bump up the timeout for this client."""

626

651

if timeout is None:

627

652

timeout = self.timeout

628

self.last_checked_ok = datetime.datetime.utcnow()

629

653

if self.disable_initiator_tag is not None:

630

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = None

631

656

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

632

657

self.disable_initiator_tag = (gobject.timeout_add

633

658

(timedelta_to_milliseconds

643

668

If a checker already exists, leave it running and do

644

669

nothing."""

645

670

# The reason for not killing a running checker is that if we

646

# did that, then if a checker (for some reason) started

647

# running slowly and taking more than 'interval' time, the

648

# client would inevitably timeout, since no checker would get

649

# a chance to run to completion. If we instead leave running

671

# did that, and if a checker (for some reason) started running

672

# slowly and taking more than 'interval' time, then the client

673

# would inevitably timeout, since no checker would get a

674

# chance to run to completion. If we instead leave running

650

675

# checkers alone, the checker would have to take more time

651

676

# than 'timeout' for the client to be disabled, which is as it

652

677

# should be.

666

691

self.current_checker_command)

667

692

# Start a new checker if needed

668

693

if self.checker is None:

694

# Escape attributes for the shell

695

escaped_attrs = dict(

696

(attr, re.escape(unicode(getattr(self, attr))))

697

for attr in

698

self.runtime_expansions)

669

699

try:

670

# In case checker_command has exactly one % operator

671

command = self.checker_command % self.host

672

except TypeError:

673

# Escape attributes for the shell

674

escaped_attrs = dict(

675

(attr,

676

re.escape(unicode(str(getattr(self, attr, "")),

677

errors=

678

'replace')))

679

for attr in

680

self.runtime_expansions)

681

682

try:

683

command = self.checker_command % escaped_attrs

684

except TypeError as error:

685

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

686

' %s', self.checker_command, error)

687

return True # Try again later

700

command = self.checker_command % escaped_attrs

701

except TypeError as error:

702

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

703

self.checker_command, exc_info=error)

704

return True # Try again later

688

705

self.current_checker_command = command

689

706

try:

690

707

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

696

713

self.checker = subprocess.Popen(command,

697

714

close_fds=True,

698

715

shell=True, cwd="/")

699

self.checker_callback_tag = (gobject.child_watch_add

700

(self.checker.pid,

701

self.checker_callback,

702

data=command))

703

# The checker may have completed before the gobject

704

# watch was added. Check for this.

705

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

706

if pid:

707

gobject.source_remove(self.checker_callback_tag)

708

self.checker_callback(pid, status, command)

709

716

except OSError as error:

710

logger.error("Failed to start subprocess: %s",

711

error)

717

logger.error("Failed to start subprocess",

718

exc_info=error)

719

self.checker_callback_tag = (gobject.child_watch_add

720

(self.checker.pid,

721

self.checker_callback,

722

data=command))

723

# The checker may have completed before the gobject

724

# watch was added. Check for this.

725

pid, status = os.waitpid(self.checker.pid, os.WNOHANG)

726

if pid:

727

gobject.source_remove(self.checker_callback_tag)

728

self.checker_callback(pid, status, command)

712

729

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

713

730

return True

714

731

721

738

return

722

739

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

723

740

try:

724

os.kill(self.checker.pid, signal.SIGTERM)

741

self.checker.terminate()

725

742

#time.sleep(0.5)

726

743

#if self.checker.poll() is None:

727

# os.kill(self.checker.pid, signal.SIGKILL)

744

# self.checker.kill()

728

745

except OSError as error:

729

746

if error.errno != errno.ESRCH: # No such process

730

747

raise

747

764

# "Set" method, so we fail early here:

748

765

if byte_arrays and signature != "ay":

749

766

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

750

" signature %r" % signature)

767

" signature {0!r}".format(signature))

751

768

def decorator(func):

752

769

func._dbus_is_property = True

753

770

func._dbus_interface = dbus_interface

761

778

return decorator

762

779

763

780

781

def dbus_interface_annotations(dbus_interface):

782

"""Decorator for marking functions returning interface annotations

783

784

Usage:

785

786

@dbus_interface_annotations("org.example.Interface")

787

def _foo(self): # Function name does not matter

788

return {"org.freedesktop.DBus.Deprecated": "true",

789

"org.freedesktop.DBus.Property.EmitsChangedSignal":

790

"false"}

791

"""

792

def decorator(func):

793

func._dbus_is_interface = True

794

func._dbus_interface = dbus_interface

795

func._dbus_name = dbus_interface

796

return func

797

return decorator

798

799

800

def dbus_annotations(annotations):

801

"""Decorator to annotate D-Bus methods, signals or properties

802

Usage:

803

804

@dbus_service_property("org.example.Interface", signature="b",

805

access="r")

806

@dbus_annotations({{"org.freedesktop.DBus.Deprecated": "true",

807

"org.freedesktop.DBus.Property."

808

"EmitsChangedSignal": "false"})

809

def Property_dbus_property(self):

810

return dbus.Boolean(False)

811

"""

812

def decorator(func):

813

func._dbus_annotations = annotations

814

return func

815

return decorator

816

817

764

818

class DBusPropertyException(dbus.exceptions.DBusException):

765

819

"""A base class for D-Bus property-related exceptions

766

820

"""

789

843

"""

790

844

791

845

@staticmethod

792

def _is_dbus_property(obj):

793

return getattr(obj, "_dbus_is_property", False)

846

def _is_dbus_thing(thing):

847

"""Returns a function testing if an attribute is a D-Bus thing

848

849

If called like _is_dbus_thing("method") it returns a function

850

suitable for use as predicate to inspect.getmembers().

851

"""

852

return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),

853

False)

794

854

795

def _get_all_dbus_properties(self):

855

def _get_all_dbus_things(self, thing):

796

856

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

797

857

"""

798

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

858

return ((getattr(athing.__get__(self), "_dbus_name",

859

name),

860

athing.__get__(self))

799

861

for cls in self.__class__.__mro__

800

for name, prop in

801

inspect.getmembers(cls, self._is_dbus_property))

862

for name, athing in

863

inspect.getmembers(cls,

864

self._is_dbus_thing(thing)))

802

865

803

866

def _get_dbus_property(self, interface_name, property_name):

804

867

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

806

869

"""

807

870

for cls in self.__class__.__mro__:

808

871

for name, value in (inspect.getmembers

809

(cls, self._is_dbus_property)):

872

(cls,

873

self._is_dbus_thing("property"))):

810

874

if (value._dbus_name == property_name

811

875

and value._dbus_interface == interface_name):

812

876

return value.__get__(self)

841

905

# signatures other than "ay".

842

906

if prop._dbus_signature != "ay":

843

907

raise ValueError

844

value = dbus.ByteArray(''.join(unichr(byte)

845

for byte in value))

908

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

909

for byte in value))

846

910

prop(value)

847

911

848

912

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

854

918

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

855

919

"""

856

920

properties = {}

857

for name, prop in self._get_all_dbus_properties():

921

for name, prop in self._get_all_dbus_things("property"):

858

922

if (interface_name

859

923

and interface_name != prop._dbus_interface):

860

924

# Interface non-empty but did not match

875

939

path_keyword='object_path',

876

940

connection_keyword='connection')

877

941

def Introspect(self, object_path, connection):

878

"""Standard D-Bus method, overloaded to insert property tags.

942

"""Overloading of standard D-Bus method.

943

944

Inserts property tags and interface annotation tags.

879

945

"""

880

946

xmlstring = dbus.service.Object.Introspect(self, object_path,

881

947

connection)

888

954

e.setAttribute("access", prop._dbus_access)

889

955

return e

890

956

for if_tag in document.getElementsByTagName("interface"):

957

# Add property tags

891

958

for tag in (make_tag(document, name, prop)

892

959

for name, prop

893

in self._get_all_dbus_properties()

960

in self._get_all_dbus_things("property")

894

961

if prop._dbus_interface

895

962

== if_tag.getAttribute("name")):

896

963

if_tag.appendChild(tag)

964

# Add annotation tags

965

for typ in ("method", "signal", "property"):

966

for tag in if_tag.getElementsByTagName(typ):

967

annots = dict()

968

for name, prop in (self.

969

_get_all_dbus_things(typ)):

970

if (name == tag.getAttribute("name")

971

and prop._dbus_interface

972

== if_tag.getAttribute("name")):

973

annots.update(getattr

974

(prop,

975

"_dbus_annotations",

976

{}))

977

for name, value in annots.iteritems():

978

ann_tag = document.createElement(

979

"annotation")

980

ann_tag.setAttribute("name", name)

981

ann_tag.setAttribute("value", value)

982

tag.appendChild(ann_tag)

983

# Add interface annotation tags

984

for annotation, value in dict(

985

itertools.chain.from_iterable(

986

annotations().iteritems()

987

for name, annotations in

988

self._get_all_dbus_things("interface")

989

if name == if_tag.getAttribute("name")

990

)).iteritems():

991

ann_tag = document.createElement("annotation")

992

ann_tag.setAttribute("name", annotation)

993

ann_tag.setAttribute("value", value)

994

if_tag.appendChild(ann_tag)

897

995

# Add the names to the return values for the

898

996

# "org.freedesktop.DBus.Properties" methods

899

997

if (if_tag.getAttribute("name")

914

1012

except (AttributeError, xml.dom.DOMException,

915

1013

xml.parsers.expat.ExpatError) as error:

916

1014

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

917

error)

1015

exc_info=error)

918

1016

return xmlstring

919

1017

920

1018

921

def datetime_to_dbus (dt, variant_level=0):

1019

def datetime_to_dbus(dt, variant_level=0):

922

1020

"""Convert a UTC datetime.datetime() to a D-Bus type."""

923

1021

if dt is None:

924

1022

return dbus.String("", variant_level = variant_level)

926

1024

variant_level=variant_level)

927

1025

928

1026

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.

1027

def alternate_dbus_interfaces(alt_interface_names, deprecate=True):

1028

"""A class decorator; applied to a subclass of

1029

dbus.service.Object, it will add alternate D-Bus attributes with

1030

interface names according to the "alt_interface_names" mapping.

1031

Usage:

1032

1033

@alternate_dbus_interfaces({"org.example.Interface":

1034

"net.example.AlternateInterface"})

1035

class SampleDBusObject(dbus.service.Object):

1036

@dbus.service.method("org.example.Interface")

1037

def SampleDBusMethod():

1038

pass

1039

1040

The above "SampleDBusMethod" on "SampleDBusObject" will be

1041

reachable via two interfaces: "org.example.Interface" and

1042

"net.example.AlternateInterface", the latter of which will have

1043

its D-Bus annotation "org.freedesktop.DBus.Deprecated" set to

1044

"true", unless "deprecate" is passed with a False value.

1045

1046

This works for methods and signals, and also for D-Bus properties

1047

(from DBusObjectWithProperties) and interfaces (from the

1048

dbus_interface_annotations decorator).

933

1049

"""

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):

1050

def wrapper(cls):

1051

for orig_interface_name, alt_interface_name in (

1052

alt_interface_names.iteritems()):

1053

attr = {}

1054

interface_names = set()

1055

# Go though all attributes of the class

1056

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

941

1057

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

942

1058

# with the wrong interface name

943

1059

if (not hasattr(attribute, "_dbus_interface")

944

1060

or not attribute._dbus_interface

945

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

1061

.startswith(orig_interface_name)):

946

1062

continue

947

1063

# Create an alternate D-Bus interface name based on

948

1064

# the current name

949

1065

alt_interface = (attribute._dbus_interface

950

.replace("se.recompile.Mandos",

951

"se.bsnet.fukt.Mandos"))

1066

.replace(orig_interface_name,

1067

alt_interface_name))

1068

interface_names.add(alt_interface)

952

1069

# Is this a D-Bus signal?

953

1070

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

954

1071

# Extract the original non-method function by

969

1086

nonmethod_func.func_name,

970

1087

nonmethod_func.func_defaults,

971

1088

nonmethod_func.func_closure)))

1089

# Copy annotations, if any

1090

try:

1091

new_function._dbus_annotations = (

1092

dict(attribute._dbus_annotations))

1093

except AttributeError:

1094

pass

972

1095

# 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

1096

# original and alternate functions, so both the

1097

# original and alternate signals gets sent when

1098

# the function is called

975

1099

def fixscope(func1, func2):

976

1100

"""This function is a scope container to pass

977

1101

func1 and func2 to the "call_both" function

984

1108

return call_both

985

1109

# Create the "call_both" function and add it to

986

1110

# the class

987

attr[attrname] = fixscope(attribute,

988

new_function)

1111

attr[attrname] = fixscope(attribute, new_function)

989

1112

# Is this a D-Bus method?

990

1113

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

991

1114

# Create a new, but exactly alike, function

1002

1125

attribute.func_name,

1003

1126

attribute.func_defaults,

1004

1127

attribute.func_closure)))

1128

# Copy annotations, if any

1129

try:

1130

attr[attrname]._dbus_annotations = (

1131

dict(attribute._dbus_annotations))

1132

except AttributeError:

1133

pass

1005

1134

# Is this a D-Bus property?

1006

1135

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

1007

1136

# Create a new, but exactly alike, function

1021

1150

attribute.func_name,

1022

1151

attribute.func_defaults,

1023

1152

attribute.func_closure)))

1024

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

1025

1026

1153

# Copy annotations, if any

1154

try:

1155

attr[attrname]._dbus_annotations = (

1156

dict(attribute._dbus_annotations))

1157

except AttributeError:

1158

pass

1159

# Is this a D-Bus interface?

1160

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

1161

# Create a new, but exactly alike, function

1162

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

1163

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

1164

# to the class.

1165

attr[attrname] = (dbus_interface_annotations

1166

(alt_interface)

1167

(types.FunctionType

1168

(attribute.func_code,

1169

attribute.func_globals,

1170

attribute.func_name,

1171

attribute.func_defaults,

1172

attribute.func_closure)))

1173

if deprecate:

1174

# Deprecate all alternate interfaces

1175

iname="_AlternateDBusNames_interface_annotation{0}"

1176

for interface_name in interface_names:

1177

@dbus_interface_annotations(interface_name)

1178

def func(self):

1179

return { "org.freedesktop.DBus.Deprecated":

1180

"true" }

1181

# Find an unused name

1182

for aname in (iname.format(i)

1183

for i in itertools.count()):

1184

if aname not in attr:

1185

attr[aname] = func

1186

break

1187

if interface_names:

1188

# Replace the class with a new subclass of it with

1189

# methods, signals, etc. as created above.

1190

cls = type(b"{0}Alternate".format(cls.__name__),

1191

(cls,), attr)

1192

return cls

1193

return wrapper

1194

1195

1196

@alternate_dbus_interfaces({"se.recompile.Mandos":

1197

"se.bsnet.fukt.Mandos"})

1027

1198

class ClientDBus(Client, DBusObjectWithProperties):

1028

1199

"""A Client class using D-Bus

1029

1200

1040

1211

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

1041

1212

self.bus = bus

1042

1213

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

1043

self._approvals_pending = 0

1044

1045

self._approvals_pending = 0

1046

1214

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

1047

1215

# the D-Bus

1048

1216

client_object_name = unicode(self.name).translate(

1052

1220

("/clients/" + client_object_name))

1053

1221

DBusObjectWithProperties.__init__(self, self.bus,

1054

1222

self.dbus_object_path)

1055

1223

1056

1224

def notifychangeproperty(transform_func,

1057

1225

dbus_name, type_func=lambda x: x,

1058

1226

variant_level=1):

1081

1249

1082

1250

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

1083

1251

1084

1085

1252

expires = notifychangeproperty(datetime_to_dbus, "Expires")

1086

1253

approvals_pending = notifychangeproperty(dbus.Boolean,

1087

1254

"ApprovalPending",

1094

1261

checker is not None)

1095

1262

last_checked_ok = notifychangeproperty(datetime_to_dbus,

1096

1263

"LastCheckedOK")

1264

last_checker_status = notifychangeproperty(dbus.Int16,

1265

"LastCheckerStatus")

1097

1266

last_approval_request = notifychangeproperty(

1098

1267

datetime_to_dbus, "LastApprovalRequest")

1099

1268

approved_by_default = notifychangeproperty(dbus.Boolean,

1167

1336

return False

1168

1337

1169

1338

def approve(self, value=True):

1170

self.send_changedstate()

1171

1339

self.approved = value

1172

1340

gobject.timeout_add(timedelta_to_milliseconds

1173

1341

(self.approval_duration),

1174

1342

self._reset_approved)

1175

1343

self.send_changedstate()

1176

1344

1177

1345

## D-Bus methods, signals & properties

1178

1346

_interface = "se.recompile.Mandos.Client"

1179

1347

1348

## Interfaces

1349

1350

@dbus_interface_annotations(_interface)

1351

def _foo(self):

1352

return { "org.freedesktop.DBus.Property.EmitsChangedSignal":

1353

"false"}

1354

1180

1355

## Signals

1181

1356

1182

1357

# CheckerCompleted - signal

1218

1393

"D-Bus signal"

1219

1394

return self.need_approval()

1220

1395

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

1396

## Methods

1230

1397

1231

1398

# Approve - method

1341

1508

return

1342

1509

return datetime_to_dbus(self.last_checked_ok)

1343

1510

1511

# LastCheckerStatus - property

1512

@dbus_service_property(_interface, signature="n",

1513

access="read")

1514

def LastCheckerStatus_dbus_property(self):

1515

return dbus.Int16(self.last_checker_status)

1516

1344

1517

# Expires - property

1345

1518

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

1346

1519

def Expires_dbus_property(self):

1357

1530

def Timeout_dbus_property(self, value=None):

1358

1531

if value is None: # get

1359

1532

return dbus.UInt64(self.timeout_milliseconds())

1533

old_timeout = self.timeout

1360

1534

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

1361

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

1362

return

1363

# Reschedule timeout

1364

gobject.source_remove(self.disable_initiator_tag)

1365

self.disable_initiator_tag = None

1366

self.expires = None

1367

time_to_die = timedelta_to_milliseconds((self

1368

.last_checked_ok

1369

+ self.timeout)

1370

- datetime.datetime

1371

.utcnow())

1372

if time_to_die <= 0:

1373

# The timeout has passed

1374

self.disable()

1375

else:

1376

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

1377

+ datetime.timedelta(milliseconds =

1378

time_to_die))

1379

self.disable_initiator_tag = (gobject.timeout_add

1380

(time_to_die, self.disable))

1535

# Reschedule disabling

1536

if self.enabled:

1537

now = datetime.datetime.utcnow()

1538

self.expires += self.timeout - old_timeout

1539

if self.expires <= now:

1540

# The timeout has passed

1541

self.disable()

1542

else:

1543

if (getattr(self, "disable_initiator_tag", None)

1544

is None):

1545

return

1546

gobject.source_remove(self.disable_initiator_tag)

1547

self.disable_initiator_tag = (

1548

gobject.timeout_add(

1549

timedelta_to_milliseconds(self.expires - now),

1550

self.disable))

1381

1551

1382

1552

# ExtendedTimeout - property

1383

1553

@dbus_service_property(_interface, signature="t",

1462

1632

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

1463

1633

1464

1634

1465

class ClientDBusTransitional(ClientDBus):

1466

__metaclass__ = AlternateDBusNamesMetaclass

1467

1468

1469

1635

class ClientHandler(socketserver.BaseRequestHandler, object):

1470

1636

"""A class to handle client connections.

1471

1637

1539

1705

except KeyError:

1540

1706

return

1541

1707

1542

if self.server.use_dbus:

1543

# Emit D-Bus signal

1544

client.NewRequest(str(self.client_address))

1545

1546

1708

if client.approval_delay:

1547

1709

delay = client.approval_delay

1548

1710

client.approvals_pending += 1

1579

1741

#wait until timeout or approved

1580

1742

time = datetime.datetime.now()

1581

1743

client.changedstate.acquire()

1582

(client.changedstate.wait

1583

(float(client.timedelta_to_milliseconds(delay)

1584

/ 1000)))

1744

client.changedstate.wait(

1745

float(timedelta_to_milliseconds(delay)

1746

/ 1000))

1585

1747

client.changedstate.release()

1586

1748

time2 = datetime.datetime.now()

1587

1749

if (time2 - time) >= delay:

1603

1765

try:

1604

1766

sent = session.send(client.secret[sent_size:])

1605

1767

except gnutls.errors.GNUTLSError as error:

1606

logger.warning("gnutls send failed")

1768

logger.warning("gnutls send failed",

1769

exc_info=error)

1607

1770

return

1608

1771

logger.debug("Sent: %d, remaining: %d",

1609

1772

sent, len(client.secret)

1612

1775

1613

1776

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

1614

1777

# bump the timeout using extended_timeout

1615

client.checked_ok(client.extended_timeout)

1778

client.bump_timeout(client.extended_timeout)

1616

1779

if self.server.use_dbus:

1617

1780

# Emit D-Bus signal

1618

1781

client.GotSecret()

1623

1786

try:

1624

1787

session.bye()

1625

1788

except gnutls.errors.GNUTLSError as error:

1626

logger.warning("GnuTLS bye failed")

1789

logger.warning("GnuTLS bye failed",

1790

exc_info=error)

1627

1791

1628

1792

@staticmethod

1629

1793

def peer_certificate(session):

1701

1865

def process_request(self, request, address):

1702

1866

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

1703

1867

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

1704

args = (request,

1705

address))

1868

args = (request, address))

1706

1869

proc.start()

1707

1870

return proc

1708

1871

1736

1899

use_ipv6: Boolean; to use IPv6 or not

1737

1900

"""

1738

1901

def __init__(self, server_address, RequestHandlerClass,

1739

interface=None, use_ipv6=True):

1902

interface=None, use_ipv6=True, socketfd=None):

1903

"""If socketfd is set, use that file descriptor instead of

1904

creating a new one with socket.socket().

1905

"""

1740

1906

self.interface = interface

1741

1907

if use_ipv6:

1742

1908

self.address_family = socket.AF_INET6

1909

if socketfd is not None:

1910

# Save the file descriptor

1911

self.socketfd = socketfd

1912

# Save the original socket.socket() function

1913

self.socket_socket = socket.socket

1914

# To implement --socket, we monkey patch socket.socket.

1915

#

1916

# (When socketserver.TCPServer is a new-style class, we

1917

# could make self.socket into a property instead of monkey

1918

# patching socket.socket.)

1919

#

1920

# Create a one-time-only replacement for socket.socket()

1921

@functools.wraps(socket.socket)

1922

def socket_wrapper(*args, **kwargs):

1923

# Restore original function so subsequent calls are

1924

# not affected.

1925

socket.socket = self.socket_socket

1926

del self.socket_socket

1927

# This time only, return a new socket object from the

1928

# saved file descriptor.

1929

return socket.fromfd(self.socketfd, *args, **kwargs)

1930

# Replace socket.socket() function with wrapper

1931

socket.socket = socket_wrapper

1932

# The socketserver.TCPServer.__init__ will call

1933

# socket.socket(), which might be our replacement,

1934

# socket_wrapper(), if socketfd was set.

1743

1935

socketserver.TCPServer.__init__(self, server_address,

1744

1936

RequestHandlerClass)

1937

1745

1938

def server_bind(self):

1746

1939

"""This overrides the normal server_bind() function

1747

1940

to bind to an interface if one was specified, and also NOT to

1755

1948

try:

1756

1949

self.socket.setsockopt(socket.SOL_SOCKET,

1757

1950

SO_BINDTODEVICE,

1758

str(self.interface

1759

+ '\0'))

1951

str(self.interface + '\0'))

1760

1952

except socket.error as error:

1761

if error[0] == errno.EPERM:

1762

logger.error("No permission to"

1763

" bind to interface %s",

1764

self.interface)

1765

elif error[0] == errno.ENOPROTOOPT:

1953

if error.errno == errno.EPERM:

1954

logger.error("No permission to bind to"

1955

" interface %s", self.interface)

1956

elif error.errno == errno.ENOPROTOOPT:

1766

1957

logger.error("SO_BINDTODEVICE not available;"

1767

1958

" cannot bind to interface %s",

1768

1959

self.interface)

1960

elif error.errno == errno.ENODEV:

1961

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

1962

" cannot bind", self.interface)

1769

1963

else:

1770

1964

raise

1771

1965

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

1801

1995

"""

1802

1996

def __init__(self, server_address, RequestHandlerClass,

1803

1997

interface=None, use_ipv6=True, clients=None,

1804

gnutls_priority=None, use_dbus=True):

1998

gnutls_priority=None, use_dbus=True, socketfd=None):

1805

1999

self.enabled = False

1806

2000

self.clients = clients

1807

2001

if self.clients is None:

1811

2005

IPv6_TCPServer.__init__(self, server_address,

1812

2006

RequestHandlerClass,

1813

2007

interface = interface,

1814

use_ipv6 = use_ipv6)

2008

use_ipv6 = use_ipv6,

2009

socketfd = socketfd)

1815

2010

def server_activate(self):

1816

2011

if self.enabled:

1817

2012

return socketserver.TCPServer.server_activate(self)

1830

2025

1831

2026

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

1832

2027

proc = None, client_object=None):

1833

condition_names = {

1834

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

1835

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

1836

# blocking).

1837

gobject.IO_PRI: "PRI", # There is urgent data to read.

1838

gobject.IO_ERR: "ERR", # Error condition.

1839

gobject.IO_HUP: "HUP" # Hung up (the connection has been

1840

# broken, usually for pipes and

1841

# sockets).

1842

}

1843

conditions_string = ' | '.join(name

1844

for cond, name in

1845

condition_names.iteritems()

1846

if cond & condition)

1847

2028

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

1848

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

2029

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

1849

2030

# Wait for other process to exit

1850

2031

proc.join()

1851

2032

return False

1941

2122

elif suffix == "w":

1942

2123

delta = datetime.timedelta(0, 0, 0, 0, 0, 0, value)

1943

2124

else:

1944

raise ValueError("Unknown suffix %r" % suffix)

2125

raise ValueError("Unknown suffix {0!r}"

2126

.format(suffix))

1945

2127

except (ValueError, IndexError) as e:

1946

2128

raise ValueError(*(e.args))

1947

2129

timevalue += delta

1961

2143

sys.exit()

1962

2144

if not noclose:

1963

2145

# Close all standard open file descriptors

1964

null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)

2146

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

1965

2147

if not stat.S_ISCHR(os.fstat(null).st_mode):

1966

2148

raise OSError(errno.ENODEV,

1967

"%s not a character device"

1968

% os.path.devnull)

2149

"{0} not a character device"

2150

.format(os.devnull))

1969

2151

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

1970

2152

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

1971

2153

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

1980

2162

1981

2163

parser = argparse.ArgumentParser()

1982

2164

parser.add_argument("-v", "--version", action="version",

1983

version = "%%(prog)s %s" % version,

2165

version = "%(prog)s {0}".format(version),

1984

2166

help="show version number and exit")

1985

2167

parser.add_argument("-i", "--interface", metavar="IF",

1986

2168

help="Bind to interface IF")

2011

2193

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

2012

2194

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

2013

2195

" state")

2196

parser.add_argument("--socket", type=int,

2197

help="Specify a file descriptor to a network"

2198

" socket to use instead of creating one")

2014

2199

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

2015

2200

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

2201

parser.add_argument("--foreground", action="store_true",

2202

help="Run in foreground")

2016

2203

2017

2204

options = parser.parse_args()

2018

2205

2033

2220

"use_ipv6": "True",

2034

2221

"debuglevel": "",

2035

2222

"restore": "True",

2036

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

2223

"socket": "",

2224

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

2225

"foreground": "False",

2037

2226

}

2038

2227

2039

2228

# Parse config file for server-global settings

2044

2233

# Convert the SafeConfigParser object to a dict

2045

2234

server_settings = server_config.defaults()

2046

2235

# Use the appropriate methods on the non-string config options

2047

for option in ("debug", "use_dbus", "use_ipv6"):

2236

for option in ("debug", "use_dbus", "use_ipv6", "foreground"):

2048

2237

server_settings[option] = server_config.getboolean("DEFAULT",

2049

2238

option)

2050

2239

if server_settings["port"]:

2051

2240

server_settings["port"] = server_config.getint("DEFAULT",

2052

2241

"port")

2242

if server_settings["socket"]:

2243

server_settings["socket"] = server_config.getint("DEFAULT",

2244

"socket")

2245

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

2246

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

2247

# happen with a supplied network socket.

2248

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

2249

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

2250

["socket"])

2053

2251

del server_config

2054

2252

2055

2253

# Override the settings from the config file with command line

2057

2255

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

2058

2256

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

2059

2257

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

2060

"statedir"):

2258

"statedir", "socket", "foreground"):

2061

2259

value = getattr(options, option)

2062

2260

if value is not None:

2063

2261

server_settings[option] = value

2066

2264

for option in server_settings.keys():

2067

2265

if type(server_settings[option]) is str:

2068

2266

server_settings[option] = unicode(server_settings[option])

2267

# Debug implies foreground

2268

if server_settings["debug"]:

2269

server_settings["foreground"] = True

2069

2270

# Now we have our good server settings in "server_settings"

2070

2271

2071

2272

##################################################################

2077

2278

use_ipv6 = server_settings["use_ipv6"]

2078

2279

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

2079

2280

stored_state_file)

2281

foreground = server_settings["foreground"]

2080

2282

2081

2283

if debug:

2082

2284

initlogger(debug, logging.DEBUG)

2089

2291

2090

2292

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

2091

2293

syslogger.setFormatter(logging.Formatter

2092

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

2093

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

2094

% server_settings["servicename"]))

2294

('Mandos ({0}) [%(process)d]:'

2295

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

2296

.format(server_settings

2297

["servicename"])))

2095

2298

2096

2299

# Parse config file with clients

2097

client_config = configparser.SafeConfigParser(Client.client_defaults)

2300

client_config = configparser.SafeConfigParser(Client

2301

.client_defaults)

2098

2302

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

2099

2303

"clients.conf"))

2100

2304

2109

2313

use_ipv6=use_ipv6,

2110

2314

gnutls_priority=

2111

2315

server_settings["priority"],

2112

use_dbus=use_dbus)

2113

if not debug:

2316

use_dbus=use_dbus,

2317

socketfd=(server_settings["socket"]

2318

or None))

2319

if not foreground:

2114

2320

pidfilename = "/var/run/mandos.pid"

2321

pidfile = None

2115

2322

try:

2116

2323

pidfile = open(pidfilename, "w")

2117

except IOError:

2118

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

2324

except IOError as e:

2325

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

2326

exc_info=e)

2119

2327

2120

try:

2121

uid = pwd.getpwnam("_mandos").pw_uid

2122

gid = pwd.getpwnam("_mandos").pw_gid

2123

except KeyError:

2328

for name in ("_mandos", "mandos", "nobody"):

2124

2329

try:

2125

uid = pwd.getpwnam("mandos").pw_uid

2126

gid = pwd.getpwnam("mandos").pw_gid

2330

uid = pwd.getpwnam(name).pw_uid

2331

gid = pwd.getpwnam(name).pw_gid

2332

break

2127

2333

except KeyError:

2128

try:

2129

uid = pwd.getpwnam("nobody").pw_uid

2130

gid = pwd.getpwnam("nobody").pw_gid

2131

except KeyError:

2132

uid = 65534

2133

gid = 65534

2334

continue

2335

else:

2336

uid = 65534

2337

gid = 65534

2134

2338

try:

2135

2339

os.setgid(gid)

2136

2340

os.setuid(uid)

2137

2341

except OSError as error:

2138

if error[0] != errno.EPERM:

2342

if error.errno != errno.EPERM:

2139

2343

raise error

2140

2344

2141

2345

if debug:

2153

2357

.gnutls_global_set_log_function(debug_gnutls))

2154

2358

2155

2359

# Redirect stdin so all checkers get /dev/null

2156

null = os.open(os.path.devnull, os.O_NOCTTY | os.O_RDWR)

2360

null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)

2157

2361

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

2158

2362

if null > 2:

2159

2363

os.close(null)

2160

2364

2161

2365

# Need to fork before connecting to D-Bus

2162

if not debug:

2366

if not foreground:

2163

2367

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

2164

2368

daemon()

2165

2369

2370

# multiprocessing will use threads, so before we use gobject we

2371

# need to inform gobject that threads will be used.

2166

2372

gobject.threads_init()

2167

2373

2168

2374

global main_loop

2169

2375

# From the Avahi example code

2170

DBusGMainLoop(set_as_default=True )

2376

DBusGMainLoop(set_as_default=True)

2171

2377

main_loop = gobject.MainLoop()

2172

2378

bus = dbus.SystemBus()

2173

2379

# End of Avahi example code

2179

2385

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

2180

2386

do_not_queue=True))

2181

2387

except dbus.exceptions.NameExistsException as e:

2182

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

2388

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

2183

2389

use_dbus = False

2184

2390

server_settings["use_dbus"] = False

2185

2391

tcp_server.use_dbus = False

2197

2403

2198

2404

client_class = Client

2199

2405

if use_dbus:

2200

client_class = functools.partial(ClientDBusTransitional,

2201

bus = bus)

2406

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

2202

2407

2203

2408

client_settings = Client.config_parser(client_config)

2204

2409

old_client_settings = {}

2212

2417

(stored_state))

2213

2418

os.remove(stored_state_path)

2214

2419

except IOError as e:

2215

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

2216

.format(e))

2217

if e.errno != errno.ENOENT:

2420

if e.errno == errno.ENOENT:

2421

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

2422

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

2423

else:

2424

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

2425

exc_info=e)

2218

2426

raise

2219

2427

except EOFError as e:

2220

2428

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

2221

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

2429

"EOFError:", exc_info=e)

2222

2430

2223

2431

with PGPEngine() as pgp:

2224

2432

for client_name, client in clients_data.iteritems():

2241

2449

2242

2450

# Clients who has passed its expire date can still be

2243

2451

# 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.

2452

# whose checker succeeded before we stored its state is

2453

# assumed to have successfully run all checkers during

2454

# downtime.

2246

2455

if client["enabled"]:

2247

2456

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

2248

2457

if not client["last_checked_ok"]:

2249

2458

logger.warning(

2250

2459

"disabling client {0} - Client never "

2251

"performed a successfull checker"

2252

.format(client["name"]))

2460

"performed a successful checker"

2461

.format(client_name))

2253

2462

client["enabled"] = False

2254

2463

elif client["last_checker_status"] != 0:

2255

2464

logger.warning(

2256

2465

"disabling client {0} - Client "

2257

2466

"last checker failed with error code {1}"

2258

.format(client["name"],

2467

.format(client_name,

2259

2468

client["last_checker_status"]))

2260

2469

client["enabled"] = False

2261

2470

else:

2262

2471

client["expires"] = (datetime.datetime

2263

2472

.utcnow()

2264

2473

+ client["timeout"])

2265

2474

logger.debug("Last checker succeeded,"

2475

" keeping {0} enabled"

2476

.format(client_name))

2266

2477

try:

2267

2478

client["secret"] = (

2268

2479

pgp.decrypt(client["encrypted_secret"],

2274

2485

.format(client_name))

2275

2486

client["secret"] = (

2276

2487

client_settings[client_name]["secret"])

2277

2278

2488

2279

2489

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

2280

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

2490

for client_name in (set(old_client_settings)

2491

- set(client_settings)):

2281

2492

del clients_data[client_name]

2282

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

2493

for client_name in (set(client_settings)

2494

- set(old_client_settings)):

2283

2495

clients_data[client_name] = client_settings[client_name]

2284

2285

# Create clients all clients

2496

2497

# Create all client objects

2286

2498

for client_name, client in clients_data.iteritems():

2287

2499

tcp_server.clients[client_name] = client_class(

2288

2500

name = client_name, settings = client)

2289

2501

2290

2502

if not tcp_server.clients:

2291

2503

logger.warning("No clients defined")

2292

2293

if not debug:

2294

try:

2295

with pidfile:

2296

pid = os.getpid()

2297

pidfile.write(str(pid) + "\n".encode("utf-8"))

2298

del pidfile

2299

except IOError:

2300

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

2301

pidfilename, pid)

2302

except NameError:

2303

# "pidfile" was never created

2304

pass

2504

2505

if not foreground:

2506

if pidfile is not None:

2507

try:

2508

with pidfile:

2509

pid = os.getpid()

2510

pidfile.write(str(pid) + "\n".encode("utf-8"))

2511

except IOError:

2512

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

2513

pidfilename, pid)

2514

del pidfile

2305

2515

del pidfilename

2306

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

2307

2516

2308

2517

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

2309

2518

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

2310

2519

2311

2520

if use_dbus:

2312

class MandosDBusService(dbus.service.Object):

2521

@alternate_dbus_interfaces({"se.recompile.Mandos":

2522

"se.bsnet.fukt.Mandos"})

2523

class MandosDBusService(DBusObjectWithProperties):

2313

2524

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

2314

2525

def __init__(self):

2315

2526

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

2316

2527

_interface = "se.recompile.Mandos"

2317

2528

2529

@dbus_interface_annotations(_interface)

2530

def _foo(self):

2531

return { "org.freedesktop.DBus.Property"

2532

".EmitsChangedSignal":

2533

"false"}

2534

2318

2535

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

2319

2536

def ClientAdded(self, objpath):

2320

2537

"D-Bus signal"

2362

2579

2363

2580

del _interface

2364

2581

2365

class MandosDBusServiceTransitional(MandosDBusService):

2366

__metaclass__ = AlternateDBusNamesMetaclass

2367

mandos_dbus_service = MandosDBusServiceTransitional()

2582

mandos_dbus_service = MandosDBusService()

2368

2583

2369

2584

def cleanup():

2370

2585

"Cleanup function; run on exit"

2403

2618

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

2404

2619

2405

2620

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:

2621

with (tempfile.NamedTemporaryFile

2622

(mode='wb', suffix=".pickle", prefix='clients-',

2623

dir=os.path.dirname(stored_state_path),

2624

delete=False)) as stored_state:

2411

2625

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

2626

tempname=stored_state.name

2412

2627

os.rename(tempname, stored_state_path)

2413

2628

except (IOError, OSError) as e:

2414

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

2415

.format(e))

2416

2629

if not debug:

2417

2630

try:

2418

2631

os.remove(tempname)

2419

2632

except NameError:

2420

2633

pass

2421

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

2422

errno.EEXIST)):

2634

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

2635

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

2636

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

2637

else:

2638

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

2639

exc_info=e)

2423

2640

raise e

2424

2641

2425

2642

# Delete all clients, and settings from config

2453

2670

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

2454

2671

if use_ipv6:

2455

2672

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

2456

" flowinfo %d, scope_id %d"

2457

% tcp_server.socket.getsockname())

2673

" flowinfo %d, scope_id %d",

2674

*tcp_server.socket.getsockname())

2458

2675

else: # IPv4

2459

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

2460

% tcp_server.socket.getsockname())

2676

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

2677

*tcp_server.socket.getsockname())

2461

2678

2462

2679

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

2463

2680

2466

2683

try:

2467

2684

service.activate()

2468

2685

except dbus.exceptions.DBusException as error:

2469

logger.critical("DBusException: %s", error)

2686

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

2470

2687

cleanup()

2471

2688

sys.exit(1)

2472

2689

# End of Avahi example code

2479

2696

logger.debug("Starting main loop")

2480

2697

main_loop.run()

2481

2698

except AvahiError as error:

2482

logger.critical("AvahiError: %s", error)

2699

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

2483

2700

cleanup()

2484

2701

sys.exit(1)

2485

2702

except KeyboardInterrupt: