/mandos/trunk : revision 591

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

63

65

import cPickle as pickle

64

66

import multiprocessing

65

67

import types

68

import binascii

69

import tempfile

70

import itertools

66

71

67

72

import dbus

68

73

import dbus.service

73

78

import ctypes.util

74

79

import xml.dom.minidom

75

80

import inspect

81

import GnuPGInterface

76

82

77

83

try:

78

84

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

82

88

except ImportError:

83

89

SO_BINDTODEVICE = None

84

90

85

86

version = "1.4.1"

91

version = "1.5.4"

92

stored_state_file = "clients.pickle"

87

93

88

94

logger = logging.getLogger()

89

95

syslogger = (logging.handlers.SysLogHandler

90

96

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

91

97

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

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('%(asctime)s %(name)s'

99

' [%(process)d]:'

100

' %(levelname)s:'

101

' %(message)s'))

102

logger.addHandler(console)

98

99

try:

100

if_nametoindex = (ctypes.cdll.LoadLibrary

101

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

102

.if_nametoindex)

103

except (OSError, AttributeError):

104

def if_nametoindex(interface):

105

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

106

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

107

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

108

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

109

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

110

interface))

111

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

112

ifreq[16:20])[0]

113

return interface_index

114

115

116

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

117

"""init logger and add loglevel"""

118

119

syslogger.setFormatter(logging.Formatter

120

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

121

' %(message)s'))

122

logger.addHandler(syslogger)

123

124

if debug:

125

console = logging.StreamHandler()

126

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

127

' [%(process)d]:'

128

' %(levelname)s:'

129

' %(message)s'))

130

logger.addHandler(console)

131

logger.setLevel(level)

132

133

134

class PGPError(Exception):

135

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

136

pass

137

138

139

class PGPEngine(object):

140

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

141

def __init__(self):

142

self.gnupg = GnuPGInterface.GnuPG()

143

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

144

self.gnupg = GnuPGInterface.GnuPG()

145

self.gnupg.options.meta_interactive = False

146

self.gnupg.options.homedir = self.tempdir

147

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

148

'--quiet',

149

'--no-use-agent'])

150

151

def __enter__(self):

152

return self

153

154

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

155

self._cleanup()

156

return False

157

158

def __del__(self):

159

self._cleanup()

160

161

def _cleanup(self):

162

if self.tempdir is not None:

163

# Delete contents of tempdir

164

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

165

topdown = False):

166

for filename in files:

167

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

168

for dirname in dirs:

169

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

170

# Remove tempdir

171

os.rmdir(self.tempdir)

172

self.tempdir = None

173

174

def password_encode(self, password):

175

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

176

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

177

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

178

179

def encrypt(self, data, password):

180

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

181

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

182

try:

183

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

184

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

185

attach_fhs={'stderr': devnull})

186

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

187

f.write(data)

188

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

189

ciphertext = f.read()

190

proc.wait()

191

except IOError as e:

192

raise PGPError(e)

193

self.gnupg.passphrase = None

194

return ciphertext

195

196

def decrypt(self, data, password):

197

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

198

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

199

try:

200

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

201

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

202

attach_fhs={'stderr': devnull})

203

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

204

f.write(data)

205

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

206

decrypted_plaintext = f.read()

207

proc.wait()

208

except IOError as e:

209

raise PGPError(e)

210

self.gnupg.passphrase = None

211

return decrypted_plaintext

103

212

104

213

105

214

class AvahiError(Exception):

136

245

server: D-Bus Server

137

246

bus: dbus.SystemBus()

138

247

"""

248

139

249

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

140

250

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

141

251

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

154

264

self.server = None

155

265

self.bus = bus

156

266

self.entry_group_state_changed_match = None

267

157

268

def rename(self):

158

269

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

159

270

if self.rename_count >= self.max_renames:

169

280

try:

170

281

self.add()

171

282

except dbus.exceptions.DBusException as error:

172

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

283

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

173

284

self.cleanup()

174

285

os._exit(1)

175

286

self.rename_count += 1

287

176

288

def remove(self):

177

289

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

178

290

if self.entry_group_state_changed_match is not None:

180

292

self.entry_group_state_changed_match = None

181

293

if self.group is not None:

182

294

self.group.Reset()

295

183

296

def add(self):

184

297

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

185

298

self.remove()

202

315

dbus.UInt16(self.port),

203

316

avahi.string_array_to_txt_array(self.TXT))

204

317

self.group.Commit()

318

205

319

def entry_group_state_changed(self, state, error):

206

320

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

207

321

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

214

328

elif state == avahi.ENTRY_GROUP_FAILURE:

215

329

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

216

330

unicode(error))

217

raise AvahiGroupError("State changed: %s"

218

% unicode(error))

331

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

332

.format(error))

333

219

334

def cleanup(self):

220

335

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

221

336

if self.group is not None:

222

337

try:

223

338

self.group.Free()

224

339

except (dbus.exceptions.UnknownMethodException,

225

dbus.exceptions.DBusException) as e:

340

dbus.exceptions.DBusException):

226

341

pass

227

342

self.group = None

228

343

self.remove()

344

229

345

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

230

346

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

231

347

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

250

366

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

251

367

else:

252

368

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

369

253

370

def activate(self):

254

371

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

255

372

if self.server is None:

262

379

self.server_state_changed)

263

380

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

264

381

382

265

383

class AvahiServiceToSyslog(AvahiService):

266

384

def rename(self):

267

385

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

268

386

ret = AvahiService.rename(self)

269

387

syslogger.setFormatter(logging.Formatter

270

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

271

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

272

% self.name))

388

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

389

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

390

.format(self.name)))

273

391

return ret

274

392

275

def _timedelta_to_milliseconds(td):

393

394

def timedelta_to_milliseconds(td):

276

395

"Convert a datetime.timedelta() to milliseconds"

277

396

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

278

397

+ (td.seconds * 1000)

279

398

+ (td.microseconds // 1000))

280

399

400

281

401

class Client(object):

282

402

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

283

403

284

404

Attributes:

285

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

405

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

286

406

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

287

407

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

288

408

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

295

415

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

296

416

checker_initiator_tag: a gobject event source tag, or None

297

417

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

418

client_structure: Object describing what attributes a client has

419

and is used for storing the client at exit

298

420

current_checker_command: string; current running checker_command

299

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

300

421

disable_initiator_tag: a gobject event source tag, or None

301

422

enabled: bool()

302

423

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

305

426

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

306

427

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

307

428

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

308

last_enabled: datetime.datetime(); (UTC)

429

last_checker_status: integer between 0 and 255 reflecting exit

430

status of last checker. -1 reflects crashed

431

checker, -2 means no checker completed yet.

432

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

309

433

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

310

434

D-Bus identifiers

311

435

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

312

436

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

313

437

until this client is disabled

314

extended_timeout: extra long timeout when password has been sent

438

extended_timeout: extra long timeout when secret has been sent

315

439

runtime_expansions: Allowed attributes for runtime expansion.

316

440

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

317

441

disabled, or None

318

442

"""

319

443

320

444

runtime_expansions = ("approval_delay", "approval_duration",

321

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

322

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

445

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

446

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

447

"last_approval_request", "last_checked_ok",

323

448

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

449

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

450

"extended_timeout": "15m",

451

"interval": "2m",

452

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

453

"host": "",

454

"approval_delay": "0s",

455

"approval_duration": "1s",

456

"approved_by_default": "True",

457

"enabled": "True",

458

}

324

459

325

460

def timeout_milliseconds(self):

326

461

"Return the 'timeout' attribute in milliseconds"

327

return _timedelta_to_milliseconds(self.timeout)

462

return timedelta_to_milliseconds(self.timeout)

328

463

329

464

def extended_timeout_milliseconds(self):

330

465

"Return the 'extended_timeout' attribute in milliseconds"

331

return _timedelta_to_milliseconds(self.extended_timeout)

466

return timedelta_to_milliseconds(self.extended_timeout)

332

467

333

468

def interval_milliseconds(self):

334

469

"Return the 'interval' attribute in milliseconds"

335

return _timedelta_to_milliseconds(self.interval)

470

return timedelta_to_milliseconds(self.interval)

336

471

337

472

def approval_delay_milliseconds(self):

338

return _timedelta_to_milliseconds(self.approval_delay)

339

340

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

341

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

342

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

343

attribute."""

473

return timedelta_to_milliseconds(self.approval_delay)

474

475

@staticmethod

476

def config_parser(config):

477

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

478

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

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

"""

483

settings = {}

484

for client_name in config.sections():

485

section = dict(config.items(client_name))

486

client = settings[client_name] = {}

487

488

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

489

# Reformat values from string types to Python types

490

client["approved_by_default"] = config.getboolean(

491

client_name, "approved_by_default")

492

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

493

"enabled")

494

495

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

496

.replace(" ", ""))

497

if "secret" in section:

498

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

499

elif "secfile" in section:

500

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

501

(section["secfile"])),

502

"rb") as secfile:

503

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

504

else:

505

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

506

.format(section))

507

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

508

client["extended_timeout"] = string_to_delta(

509

section["extended_timeout"])

510

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

511

client["approval_delay"] = string_to_delta(

512

section["approval_delay"])

513

client["approval_duration"] = string_to_delta(

514

section["approval_duration"])

515

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

516

client["last_approval_request"] = None

517

client["last_checked_ok"] = None

518

client["last_checker_status"] = -2

519

520

return settings

521

522

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

344

523

self.name = name

345

if config is None:

346

config = {}

524

# adding all client settings

525

for setting, value in settings.iteritems():

526

setattr(self, setting, value)

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

347

538

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

348

539

# Uppercase and remove spaces from fingerprint for later

349

540

# comparison purposes with return value from the fingerprint()

350

541

# function

351

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

352

.replace(" ", ""))

353

542

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

354

if "secret" in config:

355

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

356

elif "secfile" in config:

357

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

358

(config["secfile"])),

359

"rb") as secfile:

360

self.secret = secfile.read()

361

else:

362

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

363

% self.name)

364

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

365

self.created = datetime.datetime.utcnow()

366

self.enabled = False

367

self.last_approval_request = None

368

self.last_enabled = None

369

self.last_checked_ok = None

370

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

371

self.extended_timeout = string_to_delta(config

372

["extended_timeout"])

373

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

374

self.disable_hook = disable_hook

543

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

544

datetime.datetime.utcnow())

545

546

# attributes specific for this server instance

375

547

self.checker = None

376

548

self.checker_initiator_tag = None

377

549

self.disable_initiator_tag = None

378

self.expires = None

379

550

self.checker_callback_tag = None

380

self.checker_command = config["checker"]

381

551

self.current_checker_command = None

382

self.last_connect = None

383

self._approved = None

384

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

385

True)

552

self.approved = None

386

553

self.approvals_pending = 0

387

self.approval_delay = string_to_delta(

388

config["approval_delay"])

389

self.approval_duration = string_to_delta(

390

config["approval_duration"])

391

554

self.changedstate = (multiprocessing_manager

392

555

.Condition(multiprocessing_manager

393

556

.Lock()))

557

self.client_structure = [attr for attr in

558

self.__dict__.iterkeys()

559

if not attr.startswith("_")]

560

self.client_structure.append("client_structure")

561

562

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

563

lambda obj:

564

isinstance(obj,

565

property)):

566

if not name.startswith("_"):

567

self.client_structure.append(name)

394

568

569

# Send notice to process children that client state has changed

395

570

def send_changedstate(self):

396

self.changedstate.acquire()

397

self.changedstate.notify_all()

398

self.changedstate.release()

571

with self.changedstate:

572

self.changedstate.notify_all()

399

573

400

574

def enable(self):

401

575

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

402

576

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

403

577

# Already enabled

404

578

return

579

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

580

self.enabled = True

581

self.last_enabled = datetime.datetime.utcnow()

582

self.init_checker()

405

583

self.send_changedstate()

584

585

def disable(self, quiet=True):

586

"""Disable this client."""

587

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

588

return False

589

if not quiet:

590

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

591

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

592

gobject.source_remove(self.disable_initiator_tag)

593

self.disable_initiator_tag = None

594

self.expires = None

595

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

596

gobject.source_remove(self.checker_initiator_tag)

597

self.checker_initiator_tag = None

598

self.stop_checker()

599

self.enabled = False

600

if not quiet:

601

self.send_changedstate()

602

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

603

return False

604

605

def __del__(self):

606

self.disable()

607

608

def init_checker(self):

406

609

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

407

610

# and every interval from then on.

611

if self.checker_initiator_tag is not None:

612

gobject.source_remove(self.checker_initiator_tag)

408

613

self.checker_initiator_tag = (gobject.timeout_add

409

614

(self.interval_milliseconds(),

410

615

self.start_checker))

411

616

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

412

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

617

if self.disable_initiator_tag is not None:

618

gobject.source_remove(self.disable_initiator_tag)

413

619

self.disable_initiator_tag = (gobject.timeout_add

414

620

(self.timeout_milliseconds(),

415

621

self.disable))

416

self.enabled = True

417

self.last_enabled = datetime.datetime.utcnow()

418

622

# Also start a new checker *right now*.

419

623

self.start_checker()

420

624

421

def disable(self, quiet=True):

422

"""Disable this client."""

423

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

424

return False

425

if not quiet:

426

self.send_changedstate()

427

if not quiet:

428

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

429

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

430

gobject.source_remove(self.disable_initiator_tag)

431

self.disable_initiator_tag = None

432

self.expires = None

433

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

434

gobject.source_remove(self.checker_initiator_tag)

435

self.checker_initiator_tag = None

436

self.stop_checker()

437

if self.disable_hook:

438

self.disable_hook(self)

439

self.enabled = False

440

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

441

return False

442

443

def __del__(self):

444

self.disable_hook = None

445

self.disable()

446

447

625

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

448

626

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

449

627

self.checker_callback_tag = None

450

628

self.checker = None

451

629

if os.WIFEXITED(condition):

452

exitstatus = os.WEXITSTATUS(condition)

453

if exitstatus == 0:

630

self.last_checker_status = os.WEXITSTATUS(condition)

631

if self.last_checker_status == 0:

454

632

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

455

633

vars(self))

456

634

self.checked_ok()

458

636

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

459

637

vars(self))

460

638

else:

639

self.last_checker_status = -1

461

640

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

462

641

vars(self))

463

642

464

def checked_ok(self, timeout=None):

465

"""Bump up the timeout for this client.

466

467

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

468

alive and well.

469

"""

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."""

470

651

if timeout is None:

471

652

timeout = self.timeout

472

self.last_checked_ok = datetime.datetime.utcnow()

473

653

if self.disable_initiator_tag is not None:

474

654

gobject.source_remove(self.disable_initiator_tag)

655

self.disable_initiator_tag = None

475

656

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

476

657

self.disable_initiator_tag = (gobject.timeout_add

477

(_timedelta_to_milliseconds

658

(timedelta_to_milliseconds

478

659

(timeout), self.disable))

479

660

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

480

661

487

668

If a checker already exists, leave it running and do

488

669

nothing."""

489

670

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

490

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

491

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

492

# client would inevitably timeout, since no checker would get

493

# 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

494

675

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

495

676

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

496

677

# should be.

510

691

self.current_checker_command)

511

692

# Start a new checker if needed

512

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)

513

699

try:

514

# In case checker_command has exactly one % operator

515

command = self.checker_command % self.host

516

except TypeError:

517

# Escape attributes for the shell

518

escaped_attrs = dict(

519

(attr,

520

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

521

errors=

522

'replace')))

523

for attr in

524

self.runtime_expansions)

525

526

try:

527

command = self.checker_command % escaped_attrs

528

except TypeError as error:

529

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

530

' %s', self.checker_command, error)

531

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

532

705

self.current_checker_command = command

533

706

try:

534

707

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

540

713

self.checker = subprocess.Popen(command,

541

714

close_fds=True,

542

715

shell=True, cwd="/")

543

self.checker_callback_tag = (gobject.child_watch_add

544

(self.checker.pid,

545

self.checker_callback,

546

data=command))

547

# The checker may have completed before the gobject

548

# watch was added. Check for this.

549

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

550

if pid:

551

gobject.source_remove(self.checker_callback_tag)

552

self.checker_callback(pid, status, command)

553

716

except OSError as error:

554

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

555

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)

556

729

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

557

730

return True

558

731

565

738

return

566

739

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

567

740

try:

568

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

741

self.checker.terminate()

569

742

#time.sleep(0.5)

570

743

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

571

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

744

# self.checker.kill()

572

745

except OSError as error:

573

746

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

574

747

raise

591

764

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

592

765

if byte_arrays and signature != "ay":

593

766

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

594

" signature %r" % signature)

767

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

595

768

def decorator(func):

596

769

func._dbus_is_property = True

597

770

func._dbus_interface = dbus_interface

605

778

return decorator

606

779

607

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

608

818

class DBusPropertyException(dbus.exceptions.DBusException):

609

819

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

610

820

"""

633

843

"""

634

844

635

845

@staticmethod

636

def _is_dbus_property(obj):

637

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)

638

854

639

def _get_all_dbus_properties(self):

855

def _get_all_dbus_things(self, thing):

640

856

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

641

857

"""

642

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

858

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

859

name),

860

athing.__get__(self))

643

861

for cls in self.__class__.__mro__

644

for name, prop in

645

inspect.getmembers(cls, self._is_dbus_property))

862

for name, athing in

863

inspect.getmembers(cls,

864

self._is_dbus_thing(thing)))

646

865

647

866

def _get_dbus_property(self, interface_name, property_name):

648

867

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

650

869

"""

651

870

for cls in self.__class__.__mro__:

652

871

for name, value in (inspect.getmembers

653

(cls, self._is_dbus_property)):

872

(cls,

873

self._is_dbus_thing("property"))):

654

874

if (value._dbus_name == property_name

655

875

and value._dbus_interface == interface_name):

656

876

return value.__get__(self)

685

905

# signatures other than "ay".

686

906

if prop._dbus_signature != "ay":

687

907

raise ValueError

688

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

689

for byte in value))

908

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

909

for byte in value))

690

910

prop(value)

691

911

692

912

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

697

917

698

918

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

699

919

"""

700

all = {}

701

for name, prop in self._get_all_dbus_properties():

920

properties = {}

921

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

702

922

if (interface_name

703

923

and interface_name != prop._dbus_interface):

704

924

# Interface non-empty but did not match

708

928

continue

709

929

value = prop()

710

930

if not hasattr(value, "variant_level"):

711

all[name] = value

931

properties[name] = value

712

932

continue

713

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

714

value.variant_level+1)

715

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

933

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

934

value.variant_level+1)

935

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

716

936

717

937

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

718

938

out_signature="s",

719

939

path_keyword='object_path',

720

940

connection_keyword='connection')

721

941

def Introspect(self, object_path, connection):

722

"""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.

723

945

"""

724

946

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

725

947

connection)

732

954

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

733

955

return e

734

956

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

957

# Add property tags

735

958

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

736

959

for name, prop

737

in self._get_all_dbus_properties()

960

in self._get_all_dbus_things("property")

738

961

if prop._dbus_interface

739

962

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

740

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)

741

995

# Add the names to the return values for the

742

996

# "org.freedesktop.DBus.Properties" methods

743

997

if (if_tag.getAttribute("name")

758

1012

except (AttributeError, xml.dom.DOMException,

759

1013

xml.parsers.expat.ExpatError) as error:

760

1014

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

761

error)

1015

exc_info=error)

762

1016

return xmlstring

763

1017

764

1018

765

def datetime_to_dbus (dt, variant_level=0):

1019

def datetime_to_dbus(dt, variant_level=0):

766

1020

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

767

1021

if dt is None:

768

1022

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

769

1023

return dbus.String(dt.isoformat(),

770

1024

variant_level=variant_level)

771

1025

772

class AlternateDBusNamesMetaclass(DBusObjectWithProperties

773

.__metaclass__):

774

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

775

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

1026

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).

776

1049

"""

777

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

778

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

779

# methods, signals, or properties in them

780

for base in (b for b in bases

781

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

782

# Go though all attributes of the base class

783

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):

784

1057

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

785

1058

# with the wrong interface name

786

1059

if (not hasattr(attribute, "_dbus_interface")

787

1060

or not attribute._dbus_interface

788

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

1061

.startswith(orig_interface_name)):

789

1062

continue

790

1063

# Create an alternate D-Bus interface name based on

791

1064

# the current name

792

1065

alt_interface = (attribute._dbus_interface

793

.replace("se.recompile.Mandos",

794

"se.bsnet.fukt.Mandos"))

1066

.replace(orig_interface_name,

1067

alt_interface_name))

1068

interface_names.add(alt_interface)

795

1069

# Is this a D-Bus signal?

796

1070

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

797

1071

# Extract the original non-method function by

812

1086

nonmethod_func.func_name,

813

1087

nonmethod_func.func_defaults,

814

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

815

1095

# Define a creator of a function to call both the

816

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

817

# 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

818

1099

def fixscope(func1, func2):

819

1100

"""This function is a scope container to pass

820

1101

func1 and func2 to the "call_both" function

827

1108

return call_both

828

1109

# Create the "call_both" function and add it to

829

1110

# the class

830

attr[attrname] = fixscope(attribute,

831

new_function)

1111

attr[attrname] = fixscope(attribute, new_function)

832

1112

# Is this a D-Bus method?

833

1113

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

834

1114

# Create a new, but exactly alike, function

845

1125

attribute.func_name,

846

1126

attribute.func_defaults,

847

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

848

1134

# Is this a D-Bus property?

849

1135

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

850

1136

# Create a new, but exactly alike, function

864

1150

attribute.func_name,

865

1151

attribute.func_defaults,

866

1152

attribute.func_closure)))

867

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

868

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"})

869

1198

class ClientDBus(Client, DBusObjectWithProperties):

870

1199

"""A Client class using D-Bus

871

1200

880

1209

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

881

1210

882

1211

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

883

self._approvals_pending = 0

884

1212

self.bus = bus

885

1213

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

886

1214

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

892

1220

("/clients/" + client_object_name))

893

1221

DBusObjectWithProperties.__init__(self, self.bus,

894

1222

self.dbus_object_path)

895

1223

896

1224

def notifychangeproperty(transform_func,

897

1225

dbus_name, type_func=lambda x: x,

898

1226

variant_level=1):

899

1227

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

900

1228

its changes to DBus.

901

1229

902

1230

transform_fun: Function that takes a value and a variant_level

903

1231

and transforms it to a D-Bus type.

904

1232

dbus_name: D-Bus name of the variable

921

1249

922

1250

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

923

1251

924

925

1252

expires = notifychangeproperty(datetime_to_dbus, "Expires")

926

1253

approvals_pending = notifychangeproperty(dbus.Boolean,

927

1254

"ApprovalPending",

934

1261

checker is not None)

935

1262

last_checked_ok = notifychangeproperty(datetime_to_dbus,

936

1263

"LastCheckedOK")

1264

last_checker_status = notifychangeproperty(dbus.Int16,

1265

"LastCheckerStatus")

937

1266

last_approval_request = notifychangeproperty(

938

1267

datetime_to_dbus, "LastApprovalRequest")

939

1268

approved_by_default = notifychangeproperty(dbus.Boolean,

940

1269

"ApprovedByDefault")

941

approval_delay = notifychangeproperty(dbus.UInt16,

1270

approval_delay = notifychangeproperty(dbus.UInt64,

942

1271

"ApprovalDelay",

943

1272

type_func =

944

_timedelta_to_milliseconds)

1273

timedelta_to_milliseconds)

945

1274

approval_duration = notifychangeproperty(

946

dbus.UInt16, "ApprovalDuration",

947

type_func = _timedelta_to_milliseconds)

1275

dbus.UInt64, "ApprovalDuration",

1276

type_func = timedelta_to_milliseconds)

948

1277

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

949

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

1278

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

950

1279

type_func =

951

_timedelta_to_milliseconds)

1280

timedelta_to_milliseconds)

952

1281

extended_timeout = notifychangeproperty(

953

dbus.UInt16, "ExtendedTimeout",

954

type_func = _timedelta_to_milliseconds)

955

interval = notifychangeproperty(dbus.UInt16,

1282

dbus.UInt64, "ExtendedTimeout",

1283

type_func = timedelta_to_milliseconds)

1284

interval = notifychangeproperty(dbus.UInt64,

956

1285

"Interval",

957

1286

type_func =

958

_timedelta_to_milliseconds)

1287

timedelta_to_milliseconds)

959

1288

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

960

1289

961

1290

del notifychangeproperty

1003

1332

return r

1004

1333

1005

1334

def _reset_approved(self):

1006

self._approved = None

1335

self.approved = None

1007

1336

return False

1008

1337

1009

1338

def approve(self, value=True):

1010

self.send_changedstate()

1011

self._approved = value

1012

gobject.timeout_add(_timedelta_to_milliseconds

1339

self.approved = value

1340

gobject.timeout_add(timedelta_to_milliseconds

1013

1341

(self.approval_duration),

1014

1342

self._reset_approved)

1015

1343

self.send_changedstate()

1016

1344

1017

1345

## D-Bus methods, signals & properties

1018

1346

_interface = "se.recompile.Mandos.Client"

1019

1347

1348

## Interfaces

1349

1350

@dbus_interface_annotations(_interface)

1351

def _foo(self):

1352

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

1353

"false"}

1354

1020

1355

## Signals

1021

1356

1022

1357

# CheckerCompleted - signal

1121

1456

access="readwrite")

1122

1457

def ApprovalDuration_dbus_property(self, value=None):

1123

1458

if value is None: # get

1124

return dbus.UInt64(_timedelta_to_milliseconds(

1459

return dbus.UInt64(timedelta_to_milliseconds(

1125

1460

self.approval_duration))

1126

1461

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

1127

1462

1141

1476

def Host_dbus_property(self, value=None):

1142

1477

if value is None: # get

1143

1478

return dbus.String(self.host)

1144

self.host = value

1479

self.host = unicode(value)

1145

1480

1146

1481

# Created - property

1147

1482

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

1148

1483

def Created_dbus_property(self):

1149

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

1484

return datetime_to_dbus(self.created)

1150

1485

1151

1486

# LastEnabled - property

1152

1487

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

1173

1508

return

1174

1509

return datetime_to_dbus(self.last_checked_ok)

1175

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

1176

1517

# Expires - property

1177

1518

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

1178

1519

def Expires_dbus_property(self):

1189

1530

def Timeout_dbus_property(self, value=None):

1190

1531

if value is None: # get

1191

1532

return dbus.UInt64(self.timeout_milliseconds())

1533

old_timeout = self.timeout

1192

1534

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

1193

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

1194

return

1195

# Reschedule timeout

1196

gobject.source_remove(self.disable_initiator_tag)

1197

self.disable_initiator_tag = None

1198

self.expires = None

1199

time_to_die = _timedelta_to_milliseconds((self

1200

.last_checked_ok

1201

+ self.timeout)

1202

- datetime.datetime

1203

.utcnow())

1204

if time_to_die <= 0:

1205

# The timeout has passed

1206

self.disable()

1207

else:

1208

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

1209

+ datetime.timedelta(milliseconds =

1210

time_to_die))

1211

self.disable_initiator_tag = (gobject.timeout_add

1212

(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))

1213

1551

1214

1552

# ExtendedTimeout - property

1215

1553

@dbus_service_property(_interface, signature="t",

1228

1566

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

1229

1567

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

1230

1568

return

1231

# Reschedule checker run

1232

gobject.source_remove(self.checker_initiator_tag)

1233

self.checker_initiator_tag = (gobject.timeout_add

1234

(value, self.start_checker))

1235

self.start_checker() # Start one now, too

1569

if self.enabled:

1570

# Reschedule checker run

1571

gobject.source_remove(self.checker_initiator_tag)

1572

self.checker_initiator_tag = (gobject.timeout_add

1573

(value, self.start_checker))

1574

self.start_checker() # Start one now, too

1236

1575

1237

1576

# Checker - property

1238

1577

@dbus_service_property(_interface, signature="s",

1240

1579

def Checker_dbus_property(self, value=None):

1241

1580

if value is None: # get

1242

1581

return dbus.String(self.checker_command)

1243

self.checker_command = value

1582

self.checker_command = unicode(value)

1244

1583

1245

1584

# CheckerRunning - property

1246

1585

@dbus_service_property(_interface, signature="b",

1275

1614

raise KeyError()

1276

1615

1277

1616

def __getattribute__(self, name):

1278

if(name == '_pipe'):

1617

if name == '_pipe':

1279

1618

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

1280

1619

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

1281

1620

data = self._pipe.recv()

1288

1627

return func

1289

1628

1290

1629

def __setattr__(self, name, value):

1291

if(name == '_pipe'):

1630

if name == '_pipe':

1292

1631

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

1293

1632

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

1294

1633

1295

class ClientDBusTransitional(ClientDBus):

1296

__metaclass__ = AlternateDBusNamesMetaclass

1297

1634

1298

1635

class ClientHandler(socketserver.BaseRequestHandler, object):

1299

1636

"""A class to handle client connections.

1382

1719

client.Rejected("Disabled")

1383

1720

return

1384

1721

1385

if client._approved or not client.approval_delay:

1722

if client.approved or not client.approval_delay:

1386

1723

#We are approved or approval is disabled

1387

1724

break

1388

elif client._approved is None:

1725

elif client.approved is None:

1389

1726

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

1390

1727

client.name)

1391

1728

if self.server.use_dbus:

1404

1741

#wait until timeout or approved

1405

1742

time = datetime.datetime.now()

1406

1743

client.changedstate.acquire()

1407

(client.changedstate.wait

1408

(float(client._timedelta_to_milliseconds(delay)

1409

/ 1000)))

1744

client.changedstate.wait(

1745

float(timedelta_to_milliseconds(delay)

1746

/ 1000))

1410

1747

client.changedstate.release()

1411

1748

time2 = datetime.datetime.now()

1412

1749

if (time2 - time) >= delay:

1428

1765

try:

1429

1766

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

1430

1767

except gnutls.errors.GNUTLSError as error:

1431

logger.warning("gnutls send failed")

1768

logger.warning("gnutls send failed",

1769

exc_info=error)

1432

1770

return

1433

1771

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

1434

1772

sent, len(client.secret)

1437

1775

1438

1776

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

1439

1777

# bump the timeout using extended_timeout

1440

client.checked_ok(client.extended_timeout)

1778

client.bump_timeout(client.extended_timeout)

1441

1779

if self.server.use_dbus:

1442

1780

# Emit D-Bus signal

1443

1781

client.GotSecret()

1448

1786

try:

1449

1787

session.bye()

1450

1788

except gnutls.errors.GNUTLSError as error:

1451

logger.warning("GnuTLS bye failed")

1789

logger.warning("GnuTLS bye failed",

1790

exc_info=error)

1452

1791

1453

1792

@staticmethod

1454

1793

def peer_certificate(session):

1510

1849

# Convert the buffer to a Python bytestring

1511

1850

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

1512

1851

# Convert the bytestring to hexadecimal notation

1513

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

1852

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

1514

1853

return hex_fpr

1515

1854

1516

1855

1519

1858

def sub_process_main(self, request, address):

1520

1859

try:

1521

1860

self.finish_request(request, address)

1522

except:

1861

except Exception:

1523

1862

self.handle_error(request, address)

1524

1863

self.close_request(request)

1525

1864

1526

1865

def process_request(self, request, address):

1527

1866

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

1528

1867

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

1529

args = (request,

1530

address))

1868

args = (request, address))

1531

1869

proc.start()

1532

1870

return proc

1533

1871

1561

1899

use_ipv6: Boolean; to use IPv6 or not

1562

1900

"""

1563

1901

def __init__(self, server_address, RequestHandlerClass,

1564

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

"""

1565

1906

self.interface = interface

1566

1907

if use_ipv6:

1567

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.

1568

1935

socketserver.TCPServer.__init__(self, server_address,

1569

1936

RequestHandlerClass)

1937

1570

1938

def server_bind(self):

1571

1939

"""This overrides the normal server_bind() function

1572

1940

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

1583

1951

str(self.interface

1584

1952

+ '\0'))

1585

1953

except socket.error as error:

1586

if error[0] == errno.EPERM:

1954

if error.errno == errno.EPERM:

1587

1955

logger.error("No permission to"

1588

1956

" bind to interface %s",

1589

1957

self.interface)

1590

elif error[0] == errno.ENOPROTOOPT:

1958

elif error.errno == errno.ENOPROTOOPT:

1591

1959

logger.error("SO_BINDTODEVICE not available;"

1592

1960

" cannot bind to interface %s",

1593

1961

self.interface)

1962

elif error.errno == errno.ENODEV:

1963

logger.error("Interface %s does not"

1964

" exist, cannot bind",

1965

self.interface)

1594

1966

else:

1595

1967

raise

1596

1968

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

1626

1998

"""

1627

1999

def __init__(self, server_address, RequestHandlerClass,

1628

2000

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

1629

gnutls_priority=None, use_dbus=True):

2001

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

1630

2002

self.enabled = False

1631

2003

self.clients = clients

1632

2004

if self.clients is None:

1633

self.clients = set()

2005

self.clients = {}

1634

2006

self.use_dbus = use_dbus

1635

2007

self.gnutls_priority = gnutls_priority

1636

2008

IPv6_TCPServer.__init__(self, server_address,

1637

2009

RequestHandlerClass,

1638

2010

interface = interface,

1639

use_ipv6 = use_ipv6)

2011

use_ipv6 = use_ipv6,

2012

socketfd = socketfd)

1640

2013

def server_activate(self):

1641

2014

if self.enabled:

1642

2015

return socketserver.TCPServer.server_activate(self)

1655

2028

1656

2029

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

1657

2030

proc = None, client_object=None):

1658

condition_names = {

1659

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

1660

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

1661

# blocking).

1662

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

1663

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

1664

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

1665

# broken, usually for pipes and

1666

# sockets).

1667

}

1668

conditions_string = ' | '.join(name

1669

for cond, name in

1670

condition_names.iteritems()

1671

if cond & condition)

1672

2031

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

1673

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

2032

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

1674

2033

# Wait for other process to exit

1675

2034

proc.join()

1676

2035

return False

1683

2042

fpr = request[1]

1684

2043

address = request[2]

1685

2044

1686

for c in self.clients:

2045

for c in self.clients.itervalues():

1687

2046

if c.fingerprint == fpr:

1688

2047

client = c

1689

2048

break

1766

2125

elif suffix == "w":

1767

2126

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

1768

2127

else:

1769

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

2128

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

2129

.format(suffix))

1770

2130

except (ValueError, IndexError) as e:

1771

2131

raise ValueError(*(e.args))

1772

2132

timevalue += delta

1773

2133

return timevalue

1774

2134

1775

2135

1776

def if_nametoindex(interface):

1777

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

1778

1779

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

1780

global if_nametoindex

1781

try:

1782

if_nametoindex = (ctypes.cdll.LoadLibrary

1783

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

1784

.if_nametoindex)

1785

except (OSError, AttributeError):

1786

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

1787

def if_nametoindex(interface):

1788

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

1789

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

1790

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

1791

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

1792

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

1793

interface))

1794

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

1795

ifreq[16:20])[0]

1796

return interface_index

1797

return if_nametoindex(interface)

1798

1799

1800

2136

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

1801

2137

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

1802

2138

1810

2146

sys.exit()

1811

2147

if not noclose:

1812

2148

# Close all standard open file descriptors

1813

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

2149

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

1814

2150

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

1815

2151

raise OSError(errno.ENODEV,

1816

"%s not a character device"

1817

% os.path.devnull)

2152

"{0} not a character device"

2153

.format(os.devnull))

1818

2154

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

1819

2155

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

1820

2156

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

1829

2165

1830

2166

parser = argparse.ArgumentParser()

1831

2167

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

1832

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

2168

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

1833

2169

help="show version number and exit")

1834

2170

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

1835

2171

help="Bind to interface IF")

1857

2193

" system bus interface")

1858

2194

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

1859

2195

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

2196

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

2197

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

2198

" state")

2199

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

2200

help="Specify a file descriptor to a network"

2201

" socket to use instead of creating one")

2202

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

2203

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

2204

1860

2205

options = parser.parse_args()

1861

2206

1862

2207

if options.check:

1875

2220

"use_dbus": "True",

1876

2221

"use_ipv6": "True",

1877

2222

"debuglevel": "",

2223

"restore": "True",

2224

"socket": "",

2225

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

1878

2226

}

1879

2227

1880

2228

# Parse config file for server-global settings

1891

2239

if server_settings["port"]:

1892

2240

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

1893

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"])

1894

2251

del server_config

1895

2252

1896

2253

# Override the settings from the config file with command line

1897

2254

# options, if set.

1898

2255

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

1899

2256

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

1900

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

2257

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

2258

"statedir", "socket"):

1901

2259

value = getattr(options, option)

1902

2260

if value is not None:

1903

2261

server_settings[option] = value

1915

2273

debuglevel = server_settings["debuglevel"]

1916

2274

use_dbus = server_settings["use_dbus"]

1917

2275

use_ipv6 = server_settings["use_ipv6"]

2276

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

2277

stored_state_file)

2278

2279

if debug:

2280

initlogger(debug, logging.DEBUG)

2281

else:

2282

if not debuglevel:

2283

initlogger(debug)

2284

else:

2285

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

2286

initlogger(debug, level)

1918

2287

1919

2288

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

1920

2289

syslogger.setFormatter(logging.Formatter

1921

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

1922

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

1923

% server_settings["servicename"]))

2290

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

2291

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

2292

.format(server_settings

2293

["servicename"])))

1924

2294

1925

2295

# Parse config file with clients

1926

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

1927

"extended_timeout": "15m",

1928

"interval": "2m",

1929

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

1930

"host": "",

1931

"approval_delay": "0s",

1932

"approval_duration": "1s",

1933

}

1934

client_config = configparser.SafeConfigParser(client_defaults)

2296

client_config = configparser.SafeConfigParser(Client

2297

.client_defaults)

1935

2298

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

1936

2299

"clients.conf"))

1937

2300

1946

2309

use_ipv6=use_ipv6,

1947

2310

gnutls_priority=

1948

2311

server_settings["priority"],

1949

use_dbus=use_dbus)

2312

use_dbus=use_dbus,

2313

socketfd=(server_settings["socket"]

2314

or None))

1950

2315

if not debug:

1951

2316

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

1952

2317

try:

1953

2318

pidfile = open(pidfilename, "w")

1954

except IOError:

1955

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

2319

except IOError as e:

2320

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

2321

exc_info=e)

1956

2322

1957

try:

1958

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

1959

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

1960

except KeyError:

2323

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

1961

2324

try:

1962

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

1963

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

2325

uid = pwd.getpwnam(name).pw_uid

2326

gid = pwd.getpwnam(name).pw_gid

2327

break

1964

2328

except KeyError:

1965

try:

1966

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

1967

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

1968

except KeyError:

1969

uid = 65534

1970

gid = 65534

2329

continue

2330

else:

2331

uid = 65534

2332

gid = 65534

1971

2333

try:

1972

2334

os.setgid(gid)

1973

2335

os.setuid(uid)

1974

2336

except OSError as error:

1975

if error[0] != errno.EPERM:

2337

if error.errno != errno.EPERM:

1976

2338

raise error

1977

2339

1978

if not debug and not debuglevel:

1979

logger.setLevel(logging.WARNING)

1980

if debuglevel:

1981

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

1982

logger.setLevel(level)

1983

1984

2340

if debug:

1985

logger.setLevel(logging.DEBUG)

1986

2341

# Enable all possible GnuTLS debugging

1987

2342

1988

2343

# "Use a log level over 10 to enable all debugging options."

1997

2352

.gnutls_global_set_log_function(debug_gnutls))

1998

2353

1999

2354

# Redirect stdin so all checkers get /dev/null

2000

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

2355

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

2001

2356

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

2002

2357

if null > 2:

2003

2358

os.close(null)

2004

else:

2005

# No console logging

2006

logger.removeHandler(console)

2007

2359

2008

2360

# Need to fork before connecting to D-Bus

2009

2361

if not debug:

2010

2362

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

2011

2363

daemon()

2012

2364

2365

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

2366

# need to inform gobject that threads will be used.

2367

gobject.threads_init()

2368

2013

2369

global main_loop

2014

2370

# From the Avahi example code

2015

DBusGMainLoop(set_as_default=True )

2371

DBusGMainLoop(set_as_default=True)

2016

2372

main_loop = gobject.MainLoop()

2017

2373

bus = dbus.SystemBus()

2018

2374

# End of Avahi example code

2024

2380

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

2025

2381

do_not_queue=True))

2026

2382

except dbus.exceptions.NameExistsException as e:

2027

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

2383

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

2028

2384

use_dbus = False

2029

2385

server_settings["use_dbus"] = False

2030

2386

tcp_server.use_dbus = False

2042

2398

2043

2399

client_class = Client

2044

2400

if use_dbus:

2045

client_class = functools.partial(ClientDBusTransitional,

2046

bus = bus)

2047

def client_config_items(config, section):

2048

special_settings = {

2049

"approved_by_default":

2050

lambda: config.getboolean(section,

2051

"approved_by_default"),

2052

}

2053

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

2401

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

2402

2403

client_settings = Client.config_parser(client_config)

2404

old_client_settings = {}

2405

clients_data = {}

2406

2407

# Get client data and settings from last running state.

2408

if server_settings["restore"]:

2409

try:

2410

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

2411

clients_data, old_client_settings = (pickle.load

2412

(stored_state))

2413

os.remove(stored_state_path)

2414

except IOError as e:

2415

if e.errno == errno.ENOENT:

2416

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

2417

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

2418

else:

2419

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

2420

exc_info=e)

2421

raise

2422

except EOFError as e:

2423

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

2424

"EOFError:", exc_info=e)

2425

2426

with PGPEngine() as pgp:

2427

for client_name, client in clients_data.iteritems():

2428

# Decide which value to use after restoring saved state.

2429

# We have three different values: Old config file,

2430

# new config file, and saved state.

2431

# New config value takes precedence if it differs from old

2432

# config value, otherwise use saved state.

2433

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

2434

try:

2435

# For each value in new config, check if it

2436

# differs from the old config value (Except for

2437

# the "secret" attribute)

2438

if (name != "secret" and

2439

value != old_client_settings[client_name]

2440

[name]):

2441

client[name] = value

2442

except KeyError:

2443

pass

2444

2445

# Clients who has passed its expire date can still be

2446

# enabled if its last checker was successful. Clients

2447

# whose checker succeeded before we stored its state is

2448

# assumed to have successfully run all checkers during

2449

# downtime.

2450

if client["enabled"]:

2451

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

2452

if not client["last_checked_ok"]:

2453

logger.warning(

2454

"disabling client {0} - Client never "

2455

"performed a successful checker"

2456

.format(client_name))

2457

client["enabled"] = False

2458

elif client["last_checker_status"] != 0:

2459

logger.warning(

2460

"disabling client {0} - Client "

2461

"last checker failed with error code {1}"

2462

.format(client_name,

2463

client["last_checker_status"]))

2464

client["enabled"] = False

2465

else:

2466

client["expires"] = (datetime.datetime

2467

.utcnow()

2468

+ client["timeout"])

2469

logger.debug("Last checker succeeded,"

2470

" keeping {0} enabled"

2471

.format(client_name))

2054

2472

try:

2055

yield (name, special_settings[name]())

2056

except KeyError:

2057

yield (name, value)

2058

2059

tcp_server.clients.update(set(

2060

client_class(name = section,

2061

config= dict(client_config_items(

2062

client_config, section)))

2063

for section in client_config.sections()))

2473

client["secret"] = (

2474

pgp.decrypt(client["encrypted_secret"],

2475

client_settings[client_name]

2476

["secret"]))

2477

except PGPError:

2478

# If decryption fails, we use secret from new settings

2479

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

2480

.format(client_name))

2481

client["secret"] = (

2482

client_settings[client_name]["secret"])

2483

2484

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

2485

for client_name in (set(old_client_settings)

2486

- set(client_settings)):

2487

del clients_data[client_name]

2488

for client_name in (set(client_settings)

2489

- set(old_client_settings)):

2490

clients_data[client_name] = client_settings[client_name]

2491

2492

# Create all client objects

2493

for client_name, client in clients_data.iteritems():

2494

tcp_server.clients[client_name] = client_class(

2495

name = client_name, settings = client)

2496

2064

2497

if not tcp_server.clients:

2065

2498

logger.warning("No clients defined")

2066

2499

2067

2500

if not debug:

2068

2501

try:

2069

2502

with pidfile:

2077

2510

# "pidfile" was never created

2078

2511

pass

2079

2512

del pidfilename

2080

2081

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

2082

2513

2083

2514

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

2084

2515

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

2085

2516

2086

2517

if use_dbus:

2087

class MandosDBusService(dbus.service.Object):

2518

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

2519

"se.bsnet.fukt.Mandos"})

2520

class MandosDBusService(DBusObjectWithProperties):

2088

2521

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

2089

2522

def __init__(self):

2090

2523

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

2091

2524

_interface = "se.recompile.Mandos"

2092

2525

2526

@dbus_interface_annotations(_interface)

2527

def _foo(self):

2528

return { "org.freedesktop.DBus.Property"

2529

".EmitsChangedSignal":

2530

"false"}

2531

2093

2532

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

2094

2533

def ClientAdded(self, objpath):

2095

2534

"D-Bus signal"

2109

2548

def GetAllClients(self):

2110

2549

"D-Bus method"

2111

2550

return dbus.Array(c.dbus_object_path

2112

for c in tcp_server.clients)

2551

for c in

2552

tcp_server.clients.itervalues())

2113

2553

2114

2554

@dbus.service.method(_interface,

2115

2555

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

2117

2557

"D-Bus method"

2118

2558

return dbus.Dictionary(

2119

2559

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

2120

for c in tcp_server.clients),

2560

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

2121

2561

signature="oa{sv}")

2122

2562

2123

2563

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

2124

2564

def RemoveClient(self, object_path):

2125

2565

"D-Bus method"

2126

for c in tcp_server.clients:

2566

for c in tcp_server.clients.itervalues():

2127

2567

if c.dbus_object_path == object_path:

2128

tcp_server.clients.remove(c)

2568

del tcp_server.clients[c.name]

2129

2569

c.remove_from_connection()

2130

2570

# Don't signal anything except ClientRemoved

2131

2571

c.disable(quiet=True)

2136

2576

2137

2577

del _interface

2138

2578

2139

class MandosDBusServiceTransitional(MandosDBusService):

2140

__metaclass__ = AlternateDBusNamesMetaclass

2141

mandos_dbus_service = MandosDBusServiceTransitional()

2579

mandos_dbus_service = MandosDBusService()

2142

2580

2143

2581

def cleanup():

2144

2582

"Cleanup function; run on exit"

2145

2583

service.cleanup()

2146

2584

2147

2585

multiprocessing.active_children()

2586

if not (tcp_server.clients or client_settings):

2587

return

2588

2589

# Store client before exiting. Secrets are encrypted with key

2590

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

2591

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

2592

clients = {}

2593

with PGPEngine() as pgp:

2594

for client in tcp_server.clients.itervalues():

2595

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

2596

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

2597

key)

2598

client_dict = {}

2599

2600

# A list of attributes that can not be pickled

2601

# + secret.

2602

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

2603

"checker"))

2604

for name, typ in (inspect.getmembers

2605

(dbus.service.Object)):

2606

exclude.add(name)

2607

2608

client_dict["encrypted_secret"] = (client

2609

.encrypted_secret)

2610

for attr in client.client_structure:

2611

if attr not in exclude:

2612

client_dict[attr] = getattr(client, attr)

2613

2614

clients[client.name] = client_dict

2615

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

2616

2617

try:

2618

with (tempfile.NamedTemporaryFile

2619

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

2620

dir=os.path.dirname(stored_state_path),

2621

delete=False)) as stored_state:

2622

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

2623

tempname=stored_state.name

2624

os.rename(tempname, stored_state_path)

2625

except (IOError, OSError) as e:

2626

if not debug:

2627

try:

2628

os.remove(tempname)

2629

except NameError:

2630

pass

2631

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

2632

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

2633

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

2634

else:

2635

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

2636

exc_info=e)

2637

raise e

2638

2639

# Delete all clients, and settings from config

2148

2640

while tcp_server.clients:

2149

client = tcp_server.clients.pop()

2641

name, client = tcp_server.clients.popitem()

2150

2642

if use_dbus:

2151

2643

client.remove_from_connection()

2152

client.disable_hook = None

2153

2644

# Don't signal anything except ClientRemoved

2154

2645

client.disable(quiet=True)

2155

2646

if use_dbus:

2157

2648

mandos_dbus_service.ClientRemoved(client

2158

2649

.dbus_object_path,

2159

2650

client.name)

2651

client_settings.clear()

2160

2652

2161

2653

atexit.register(cleanup)

2162

2654

2163

for client in tcp_server.clients:

2655

for client in tcp_server.clients.itervalues():

2164

2656

if use_dbus:

2165

2657

# Emit D-Bus signal

2166

2658

mandos_dbus_service.ClientAdded(client.dbus_object_path)

2167

client.enable()

2659

# Need to initiate checking of clients

2660

if client.enabled:

2661

client.init_checker()

2168

2662

2169

2663

tcp_server.enable()

2170

2664

tcp_server.server_activate()

2173

2667

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

2174

2668

if use_ipv6:

2175

2669

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

2176

" flowinfo %d, scope_id %d"

2177

% tcp_server.socket.getsockname())

2670

" flowinfo %d, scope_id %d",

2671

*tcp_server.socket.getsockname())

2178

2672

else: # IPv4

2179

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

2180

% tcp_server.socket.getsockname())

2673

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

2674

*tcp_server.socket.getsockname())

2181

2675

2182

2676

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

2183

2677

2186

2680

try:

2187

2681

service.activate()

2188

2682

except dbus.exceptions.DBusException as error:

2189

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

2683

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

2190

2684

cleanup()

2191

2685

sys.exit(1)

2192

2686

# End of Avahi example code

2199

2693

logger.debug("Starting main loop")

2200

2694

main_loop.run()

2201

2695

except AvahiError as error:

2202

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

2696

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

2203

2697

cleanup()

2204

2698

sys.exit(1)

2205

2699

except KeyboardInterrupt:

2210

2704

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

2211

2705

cleanup()

2212

2706

2213

2214

2707

if __name__ == '__main__':

2215

2708

main()