/mandos/trunk : revision 729

1

#!/usr/bin/python

1

#!/usr/bin/python2.7

2

# -*- mode: python; coding: utf-8 -*-

3

#

4

# Mandos server - give out binary blobs to connecting clients.

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

68

import binascii

69

import tempfile

70

import itertools

71

import collections

71

72

73

import dbus

73

74

import dbus.service

78

79

import ctypes.util

79

80

import xml.dom.minidom

80

81

import inspect

81

import GnuPGInterface

82

83

try:

84

SO_BINDTODEVICE = socket.SO_BINDTODEVICE

88

except ImportError:

89

SO_BINDTODEVICE = None

90

91

version = "1.5.3"

91

version = "1.6.8"

92

stored_state_file = "clients.pickle"

93

94

logger = logging.getLogger()

95

syslogger = (logging.handlers.SysLogHandler

96

(facility = logging.handlers.SysLogHandler.LOG_DAEMON,

97

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

95

syslogger = None

98

96

99

97

try:

100

98

if_nametoindex = (ctypes.cdll.LoadLibrary

106

104

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

107

105

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

108

106

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

109

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

110

interface))

111

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

112

ifreq[16:20])[0]

107

struct.pack(b"16s16x", interface))

108

interface_index = struct.unpack("I", ifreq[16:20])[0]

113

109

return interface_index

114

110

115

111

116

112

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

117

113

"""init logger and add loglevel"""

118

114

115

global syslogger

116

syslogger = (logging.handlers.SysLogHandler

117

(facility =

118

logging.handlers.SysLogHandler.LOG_DAEMON,

119

address = "/dev/log"))

119

120

syslogger.setFormatter(logging.Formatter

120

121

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

121

122

' %(message)s'))

139

140

class PGPEngine(object):

140

141

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

141

142

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'])

144

self.gnupgargs = ['--batch',

145

'--home', self.tempdir,

146

'--force-mdc',

147

'--quiet',

148

'--no-use-agent']

150

149

151

150

def __enter__(self):

152

151

return self

153

152

154

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

153

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

155

154

self._cleanup()

156

155

return False

157

156

174

173

def password_encode(self, password):

175

174

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

176

175

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

177

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

176

encoded = b"mandos" + binascii.hexlify(password)

177

if len(encoded) > 2048:

178

# GnuPG can't handle long passwords, so encode differently

179

encoded = (b"mandos" + password.replace(b"\\", b"\\\\")

180

.replace(b"\n", b"\\n")

181

.replace(b"\0", b"\\x00"))

182

return encoded

178

183

179

184

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

185

passphrase = self.password_encode(password)

186

with tempfile.NamedTemporaryFile(dir=self.tempdir

187

) as passfile:

188

passfile.write(passphrase)

189

passfile.flush()

190

proc = subprocess.Popen(['gpg', '--symmetric',

191

'--passphrase-file',

192

passfile.name]

193

+ self.gnupgargs,

194

stdin = subprocess.PIPE,

195

stdout = subprocess.PIPE,

196

stderr = subprocess.PIPE)

197

ciphertext, err = proc.communicate(input = data)

198

if proc.returncode != 0:

199

raise PGPError(err)

194

200

return ciphertext

195

201

196

202

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

203

passphrase = self.password_encode(password)

204

with tempfile.NamedTemporaryFile(dir = self.tempdir

205

) as passfile:

206

passfile.write(passphrase)

207

passfile.flush()

208

proc = subprocess.Popen(['gpg', '--decrypt',

209

'--passphrase-file',

210

passfile.name]

211

+ self.gnupgargs,

212

stdin = subprocess.PIPE,

213

stdout = subprocess.PIPE,

214

stderr = subprocess.PIPE)

215

decrypted_plaintext, err = proc.communicate(input

216

= data)

217

if proc.returncode != 0:

218

raise PGPError(err)

211

219

return decrypted_plaintext

212

220

213

221

214

222

class AvahiError(Exception):

215

223

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

216

224

self.value = value

217

super(AvahiError, self).__init__(value, *args, **kwargs)

218

def __unicode__(self):

219

return unicode(repr(self.value))

225

return super(AvahiError, self).__init__(value, *args,

226

**kwargs)

220

227

221

228

class AvahiServiceError(AvahiError):

222

229

pass

233

240

Used to optionally bind to the specified interface.

234

241

name: string; Example: 'Mandos'

235

242

type: string; Example: '_mandos._tcp'.

236

See <http://www.dns-sd.org/ServiceTypes.html>

243

See <https://www.iana.org/assignments/service-names-port-numbers>

237

244

port: integer; what port to announce

238

245

TXT: list of strings; TXT record for the service

239

246

domain: string; Domain to publish on, default to .local if empty.

328

335

elif state == avahi.ENTRY_GROUP_FAILURE:

329

336

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

330

337

unicode(error))

331

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

338

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

332

339

.format(error))

333

340

334

341

def cleanup(self):

379

386

self.server_state_changed)

380

387

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

381

388

389

382

390

class AvahiServiceToSyslog(AvahiService):

383

391

def rename(self):

384

392

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

385

393

ret = AvahiService.rename(self)

386

394

syslogger.setFormatter(logging.Formatter

387

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

395

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

388

396

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

389

397

.format(self.name)))

390

398

return ret

391

399

392

def timedelta_to_milliseconds(td):

393

"Convert a datetime.timedelta() to milliseconds"

394

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

395

+ (td.seconds * 1000)

396

+ (td.microseconds // 1000))

397

400

398

401

class Client(object):

399

402

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

436

439

runtime_expansions: Allowed attributes for runtime expansion.

437

440

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

438

441

disabled, or None

442

server_settings: The server_settings dict from main()

439

443

"""

440

444

441

445

runtime_expansions = ("approval_delay", "approval_duration",

442

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

443

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

446

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

447

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

448

"last_approval_request", "last_checked_ok",

444

449

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

445

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

446

"extended_timeout": "15m",

447

"interval": "2m",

450

client_defaults = { "timeout": "PT5M",

451

"extended_timeout": "PT15M",

452

"interval": "PT2M",

448

453

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

449

454

"host": "",

450

"approval_delay": "0s",

451

"approval_duration": "1s",

455

"approval_delay": "PT0S",

456

"approval_duration": "PT1S",

452

457

"approved_by_default": "True",

453

458

"enabled": "True",

454

459

}

455

460

456

def timeout_milliseconds(self):

457

"Return the 'timeout' attribute in milliseconds"

458

return timedelta_to_milliseconds(self.timeout)

459

460

def extended_timeout_milliseconds(self):

461

"Return the 'extended_timeout' attribute in milliseconds"

462

return timedelta_to_milliseconds(self.extended_timeout)

463

464

def interval_milliseconds(self):

465

"Return the 'interval' attribute in milliseconds"

466

return timedelta_to_milliseconds(self.interval)

467

468

def approval_delay_milliseconds(self):

469

return timedelta_to_milliseconds(self.approval_delay)

470

471

461

@staticmethod

472

462

def config_parser(config):

473

463

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

498

488

"rb") as secfile:

499

489

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

500

490

else:

501

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

491

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

502

492

.format(section))

503

493

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

504

494

client["extended_timeout"] = string_to_delta(

515

505

516

506

return settings

517

507

518

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

508

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

519

509

self.name = name

510

if server_settings is None:

511

server_settings = {}

512

self.server_settings = server_settings

520

513

# adding all client settings

521

for setting, value in settings.iteritems():

514

for setting, value in settings.items():

522

515

setattr(self, setting, value)

523

516

524

517

if self.enabled:

572

565

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

573

566

# Already enabled

574

567

return

575

self.send_changedstate()

576

568

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

577

569

self.enabled = True

578

570

self.last_enabled = datetime.datetime.utcnow()

579

571

self.init_checker()

572

self.send_changedstate()

580

573

581

574

def disable(self, quiet=True):

582

575

"""Disable this client."""

583

576

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

584

577

return False

585

578

if not quiet:

586

self.send_changedstate()

587

if not quiet:

588

579

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

589

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

580

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

590

581

gobject.source_remove(self.disable_initiator_tag)

591

582

self.disable_initiator_tag = None

592

583

self.expires = None

593

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

584

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

594

585

gobject.source_remove(self.checker_initiator_tag)

595

586

self.checker_initiator_tag = None

596

587

self.stop_checker()

597

588

self.enabled = False

589

if not quiet:

590

self.send_changedstate()

598

591

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

599

592

return False

600

593

604

597

def init_checker(self):

605

598

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

606

599

# and every interval from then on.

600

if self.checker_initiator_tag is not None:

601

gobject.source_remove(self.checker_initiator_tag)

607

602

self.checker_initiator_tag = (gobject.timeout_add

608

(self.interval_milliseconds(),

603

(int(self.interval

604

.total_seconds() * 1000),

609

605

self.start_checker))

610

606

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

607

if self.disable_initiator_tag is not None:

608

gobject.source_remove(self.disable_initiator_tag)

611

609

self.disable_initiator_tag = (gobject.timeout_add

612

(self.timeout_milliseconds(),

613

self.disable))

610

(int(self.timeout

611

.total_seconds() * 1000),

612

self.disable))

614

613

# Also start a new checker *right now*.

615

614

self.start_checker()

616

615

644

643

timeout = self.timeout

645

644

if self.disable_initiator_tag is not None:

646

645

gobject.source_remove(self.disable_initiator_tag)

646

self.disable_initiator_tag = None

647

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

648

self.disable_initiator_tag = (gobject.timeout_add

649

(timedelta_to_milliseconds

650

(timeout), self.disable))

649

(int(timeout.total_seconds()

650

* 1000), self.disable))

651

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

652

653

def need_approval(self):

670

# If a checker exists, make sure it is not a zombie

671

try:

672

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

673

except (AttributeError, OSError) as error:

674

if (isinstance(error, OSError)

675

and error.errno != errno.ECHILD):

676

raise error

673

except AttributeError:

674

pass

675

except OSError as error:

676

if error.errno != errno.ECHILD:

677

raise

677

678

else:

678

679

if pid:

679

680

logger.warning("Checker was a zombie")

682

683

self.current_checker_command)

683

684

# Start a new checker if needed

684

685

if self.checker is None:

686

# Escape attributes for the shell

687

escaped_attrs = { attr:

688

re.escape(unicode(getattr(self,

689

attr)))

690

for attr in self.runtime_expansions }

685

691

try:

686

# In case checker_command has exactly one % operator

687

command = self.checker_command % self.host

688

except TypeError:

689

# Escape attributes for the shell

690

escaped_attrs = dict(

691

(attr,

692

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

693

errors=

694

'replace')))

695

for attr in

696

self.runtime_expansions)

697

698

try:

699

command = self.checker_command % escaped_attrs

700

except TypeError as error:

701

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

702

self.checker_command, exc_info=error)

703

return True # Try again later

692

command = self.checker_command % escaped_attrs

693

except TypeError as error:

694

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

695

self.checker_command, exc_info=error)

696

return True # Try again later

704

697

self.current_checker_command = command

705

698

try:

706

699

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

709

702

# in normal mode, that is already done by daemon(),

710

703

# and in debug mode we don't want to. (Stdin is

711

704

# always replaced by /dev/null.)

705

# The exception is when not debugging but nevertheless

706

# running in the foreground; use the previously

707

# created wnull.

708

popen_args = {}

709

if (not self.server_settings["debug"]

710

and self.server_settings["foreground"]):

711

popen_args.update({"stdout": wnull,

712

"stderr": wnull })

712

713

self.checker = subprocess.Popen(command,

713

714

close_fds=True,

714

shell=True, cwd="/")

715

self.checker_callback_tag = (gobject.child_watch_add

716

(self.checker.pid,

717

self.checker_callback,

718

data=command))

719

# The checker may have completed before the gobject

720

# watch was added. Check for this.

721

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

722

if pid:

723

gobject.source_remove(self.checker_callback_tag)

724

self.checker_callback(pid, status, command)

715

shell=True, cwd="/",

716

**popen_args)

725

717

except OSError as error:

726

718

logger.error("Failed to start subprocess",

727

719

exc_info=error)

720

return True

721

self.checker_callback_tag = (gobject.child_watch_add

722

(self.checker.pid,

723

self.checker_callback,

724

data=command))

725

# The checker may have completed before the gobject

726

# watch was added. Check for this.

727

try:

728

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

729

except OSError as error:

730

if error.errno == errno.ECHILD:

731

# This should never happen

732

logger.error("Child process vanished",

733

exc_info=error)

734

return True

735

raise

736

if pid:

737

gobject.source_remove(self.checker_callback_tag)

738

self.checker_callback(pid, status, command)

728

739

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

729

740

return True

730

741

763

774

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

764

775

if byte_arrays and signature != "ay":

765

776

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

766

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

777

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

767

778

def decorator(func):

768

779

func._dbus_is_property = True

769

780

func._dbus_interface = dbus_interface

817

828

class DBusPropertyException(dbus.exceptions.DBusException):

818

829

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

819

830

"""

820

def __unicode__(self):

821

return unicode(str(self))

822

831

pass

823

832

824

833

class DBusPropertyAccessException(DBusPropertyException):

825

834

"""A property's access permissions disallows an operation.

848

857

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

849

858

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

850

859

"""

851

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

860

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

852

861

False)

853

862

854

863

def _get_all_dbus_things(self, thing):

903

912

# The byte_arrays option is not supported yet on

904

913

# signatures other than "ay".

905

914

if prop._dbus_signature != "ay":

906

raise ValueError

915

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

916

"'ay' signature {!r}"

917

.format(prop._dbus_signature))

907

918

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

908

919

for byte in value))

909

920

prop(value)

973

984

(prop,

974

985

"_dbus_annotations",

975

986

{}))

976

for name, value in annots.iteritems():

987

for name, value in annots.items():

977

988

ann_tag = document.createElement(

978

989

"annotation")

979

990

ann_tag.setAttribute("name", name)

982

993

# Add interface annotation tags

983

994

for annotation, value in dict(

984

995

itertools.chain.from_iterable(

985

annotations().iteritems()

996

annotations().items()

986

997

for name, annotations in

987

998

self._get_all_dbus_things("interface")

988

999

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

989

)).iteritems():

1000

)).items():

990

1001

ann_tag = document.createElement("annotation")

991

1002

ann_tag.setAttribute("name", annotation)

992

1003

ann_tag.setAttribute("value", value)

1015

1026

return xmlstring

1016

1027

1017

1028

1018

def datetime_to_dbus (dt, variant_level=0):

1029

def datetime_to_dbus(dt, variant_level=0):

1019

1030

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

1020

1031

if dt is None:

1021

1032

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

1029

1040

interface names according to the "alt_interface_names" mapping.

1030

1041

Usage:

1031

1042

1032

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

1033

"net.example.AlternateInterface"})

1043

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

1044

"net.example.AlternateInterface"})

1034

1045

class SampleDBusObject(dbus.service.Object):

1035

1046

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

1036

1047

def SampleDBusMethod():

1048

1059

"""

1049

1060

def wrapper(cls):

1050

1061

for orig_interface_name, alt_interface_name in (

1051

alt_interface_names.iteritems()):

1062

alt_interface_names.items()):

1052

1063

attr = {}

1053

1064

interface_names = set()

1054

1065

# Go though all attributes of the class

1067

1078

interface_names.add(alt_interface)

1068

1079

# Is this a D-Bus signal?

1069

1080

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

1070

# Extract the original non-method function by

1071

# black magic

1081

# Extract the original non-method undecorated

1082

# function by black magic

1072

1083

nonmethod_func = (dict(

1073

1084

zip(attribute.func_code.co_freevars,

1074

1085

attribute.__closure__))["func"]

1171

1182

attribute.func_closure)))

1172

1183

if deprecate:

1173

1184

# Deprecate all alternate interfaces

1174

iname="_AlternateDBusNames_interface_annotation{0}"

1185

iname="_AlternateDBusNames_interface_annotation{}"

1175

1186

for interface_name in interface_names:

1176

1187

@dbus_interface_annotations(interface_name)

1177

1188

def func(self):

1186

1197

if interface_names:

1187

1198

# Replace the class with a new subclass of it with

1188

1199

# methods, signals, etc. as created above.

1189

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

1200

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

1190

1201

(cls,), attr)

1191

1202

return cls

1192

1203

return wrapper

1233

1244

to the D-Bus. Default: no transform

1234

1245

variant_level: D-Bus variant level. Default: 1

1235

1246

"""

1236

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

1247

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

1237

1248

def setter(self, value):

1238

1249

if hasattr(self, "dbus_object_path"):

1239

1250

if (not hasattr(self, attrname) or

1269

1280

approval_delay = notifychangeproperty(dbus.UInt64,

1270

1281

"ApprovalDelay",

1271

1282

type_func =

1272

timedelta_to_milliseconds)

1283

lambda td: td.total_seconds()

1284

* 1000)

1273

1285

approval_duration = notifychangeproperty(

1274

1286

dbus.UInt64, "ApprovalDuration",

1275

type_func = timedelta_to_milliseconds)

1287

type_func = lambda td: td.total_seconds() * 1000)

1276

1288

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

1277

1289

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

1278

type_func =

1279

timedelta_to_milliseconds)

1290

type_func = lambda td:

1291

td.total_seconds() * 1000)

1280

1292

extended_timeout = notifychangeproperty(

1281

1293

dbus.UInt64, "ExtendedTimeout",

1282

type_func = timedelta_to_milliseconds)

1294

type_func = lambda td: td.total_seconds() * 1000)

1283

1295

interval = notifychangeproperty(dbus.UInt64,

1284

1296

"Interval",

1285

1297

type_func =

1286

timedelta_to_milliseconds)

1298

lambda td: td.total_seconds()

1299

* 1000)

1287

1300

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

1288

1301

1289

1302

del notifychangeproperty

1317

1330

*args, **kwargs)

1318

1331

1319

1332

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

1320

old_checker = self.checker

1321

if self.checker is not None:

1322

old_checker_pid = self.checker.pid

1323

else:

1324

old_checker_pid = None

1333

old_checker_pid = getattr(self.checker, "pid", None)

1325

1334

r = Client.start_checker(self, *args, **kwargs)

1326

1335

# Only if new checker process was started

1327

1336

if (self.checker is not None

1335

1344

return False

1336

1345

1337

1346

def approve(self, value=True):

1338

self.send_changedstate()

1339

1347

self.approved = value

1340

gobject.timeout_add(timedelta_to_milliseconds

1341

(self.approval_duration),

1342

self._reset_approved)

1348

gobject.timeout_add(int(self.approval_duration.total_seconds()

1349

* 1000), self._reset_approved)

1350

self.send_changedstate()

1343

1351

1344

1352

## D-Bus methods, signals & properties

1345

1353

_interface = "se.recompile.Mandos.Client"

1447

1455

access="readwrite")

1448

1456

def ApprovalDelay_dbus_property(self, value=None):

1449

1457

if value is None: # get

1450

return dbus.UInt64(self.approval_delay_milliseconds())

1458

return dbus.UInt64(self.approval_delay.total_seconds()

1459

* 1000)

1451

1460

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

1452

1461

1453

1462

# ApprovalDuration - property

1455

1464

access="readwrite")

1456

1465

def ApprovalDuration_dbus_property(self, value=None):

1457

1466

if value is None: # get

1458

return dbus.UInt64(timedelta_to_milliseconds(

1459

self.approval_duration))

1467

return dbus.UInt64(self.approval_duration.total_seconds()

1468

* 1000)

1460

1469

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

1461

1470

1462

1471

# Name - property

1528

1537

access="readwrite")

1529

1538

def Timeout_dbus_property(self, value=None):

1530

1539

if value is None: # get

1531

return dbus.UInt64(self.timeout_milliseconds())

1540

return dbus.UInt64(self.timeout.total_seconds() * 1000)

1541

old_timeout = self.timeout

1532

1542

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

1533

# Reschedule timeout

1543

# Reschedule disabling

1534

1544

if self.enabled:

1535

1545

now = datetime.datetime.utcnow()

1536

time_to_die = timedelta_to_milliseconds(

1537

(self.last_checked_ok + self.timeout) - now)

1538

if time_to_die <= 0:

1546

self.expires += self.timeout - old_timeout

1547

if self.expires <= now:

1539

1548

# The timeout has passed

1540

1549

self.disable()

1541

1550

else:

1542

self.expires = (now +

1543

datetime.timedelta(milliseconds =

1544

time_to_die))

1545

1551

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

1546

1552

is None):

1547

1553

return

1548

1554

gobject.source_remove(self.disable_initiator_tag)

1549

self.disable_initiator_tag = (gobject.timeout_add

1550

(time_to_die,

1551

self.disable))

1555

self.disable_initiator_tag = (

1556

gobject.timeout_add(

1557

int((self.expires - now).total_seconds()

1558

* 1000), self.disable))

1552

1559

1553

1560

# ExtendedTimeout - property

1554

1561

@dbus_service_property(_interface, signature="t",

1555

1562

access="readwrite")

1556

1563

def ExtendedTimeout_dbus_property(self, value=None):

1557

1564

if value is None: # get

1558

return dbus.UInt64(self.extended_timeout_milliseconds())

1565

return dbus.UInt64(self.extended_timeout.total_seconds()

1566

* 1000)

1559

1567

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

1560

1568

1561

1569

# Interval - property

1563

1571

access="readwrite")

1564

1572

def Interval_dbus_property(self, value=None):

1565

1573

if value is None: # get

1566

return dbus.UInt64(self.interval_milliseconds())

1574

return dbus.UInt64(self.interval.total_seconds() * 1000)

1567

1575

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

1568

1576

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

1569

1577

return

1602

1610

@dbus_service_property(_interface, signature="ay",

1603

1611

access="write", byte_arrays=True)

1604

1612

def Secret_dbus_property(self, value):

1605

self.secret = str(value)

1613

self.secret = bytes(value)

1606

1614

1607

1615

del _interface

1608

1616

1674

1682

logger.debug("Protocol version: %r", line)

1675

1683

try:

1676

1684

if int(line.strip().split()[0]) > 1:

1677

raise RuntimeError

1685

raise RuntimeError(line)

1678

1686

except (ValueError, IndexError, RuntimeError) as error:

1679

1687

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

1680

1688

return

1729

1737

if self.server.use_dbus:

1730

1738

# Emit D-Bus signal

1731

1739

client.NeedApproval(

1732

client.approval_delay_milliseconds(),

1733

client.approved_by_default)

1740

client.approval_delay.total_seconds()

1741

* 1000, client.approved_by_default)

1734

1742

else:

1735

1743

logger.warning("Client %s was not approved",

1736

1744

client.name)

1742

1750

#wait until timeout or approved

1743

1751

time = datetime.datetime.now()

1744

1752

client.changedstate.acquire()

1745

(client.changedstate.wait

1746

(float(client.timedelta_to_milliseconds(delay)

1747

/ 1000)))

1753

client.changedstate.wait(delay.total_seconds())

1748

1754

client.changedstate.release()

1749

1755

time2 = datetime.datetime.now()

1750

1756

if (time2 - time) >= delay:

1887

1893

1888

1894

def add_pipe(self, parent_pipe, proc):

1889

1895

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

1890

raise NotImplementedError

1896

raise NotImplementedError()

1891

1897

1892

1898

1893

1899

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

1900

1906

use_ipv6: Boolean; to use IPv6 or not

1901

1907

"""

1902

1908

def __init__(self, server_address, RequestHandlerClass,

1903

interface=None, use_ipv6=True):

1909

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

1910

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

1911

creating a new one with socket.socket().

1912

"""

1904

1913

self.interface = interface

1905

1914

if use_ipv6:

1906

1915

self.address_family = socket.AF_INET6

1916

if socketfd is not None:

1917

# Save the file descriptor

1918

self.socketfd = socketfd

1919

# Save the original socket.socket() function

1920

self.socket_socket = socket.socket

1921

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

1922

#

1923

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

1924

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

1925

# patching socket.socket.)

1926

#

1927

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

1928

@functools.wraps(socket.socket)

1929

def socket_wrapper(*args, **kwargs):

1930

# Restore original function so subsequent calls are

1931

# not affected.

1932

socket.socket = self.socket_socket

1933

del self.socket_socket

1934

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

1935

# saved file descriptor.

1936

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

1937

# Replace socket.socket() function with wrapper

1938

socket.socket = socket_wrapper

1939

# The socketserver.TCPServer.__init__ will call

1940

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

1941

# socket_wrapper(), if socketfd was set.

1907

1942

socketserver.TCPServer.__init__(self, server_address,

1908

1943

RequestHandlerClass)

1944

1909

1945

def server_bind(self):

1910

1946

"""This overrides the normal server_bind() function

1911

1947

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

1919

1955

try:

1920

1956

self.socket.setsockopt(socket.SOL_SOCKET,

1921

1957

SO_BINDTODEVICE,

1922

str(self.interface

1923

+ '\0'))

1958

(self.interface + "\0")

1959

.encode("utf-8"))

1924

1960

except socket.error as error:

1925

if error[0] == errno.EPERM:

1926

logger.error("No permission to"

1927

" bind to interface %s",

1928

self.interface)

1929

elif error[0] == errno.ENOPROTOOPT:

1961

if error.errno == errno.EPERM:

1962

logger.error("No permission to bind to"

1963

" interface %s", self.interface)

1964

elif error.errno == errno.ENOPROTOOPT:

1930

1965

logger.error("SO_BINDTODEVICE not available;"

1931

1966

" cannot bind to interface %s",

1932

1967

self.interface)

1968

elif error.errno == errno.ENODEV:

1969

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

1970

" cannot bind", self.interface)

1933

1971

else:

1934

1972

raise

1935

1973

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

1938

1976

if self.address_family == socket.AF_INET6:

1939

1977

any_address = "::" # in6addr_any

1940

1978

else:

1941

any_address = socket.INADDR_ANY

1979

any_address = "0.0.0.0" # INADDR_ANY

1942

1980

self.server_address = (any_address,

1943

1981

self.server_address[1])

1944

1982

elif not self.server_address[1]:

1965

2003

"""

1966

2004

def __init__(self, server_address, RequestHandlerClass,

1967

2005

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

1968

gnutls_priority=None, use_dbus=True):

2006

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

1969

2007

self.enabled = False

1970

2008

self.clients = clients

1971

2009

if self.clients is None:

1975

2013

IPv6_TCPServer.__init__(self, server_address,

1976

2014

RequestHandlerClass,

1977

2015

interface = interface,

1978

use_ipv6 = use_ipv6)

2016

use_ipv6 = use_ipv6,

2017

socketfd = socketfd)

1979

2018

def server_activate(self):

1980

2019

if self.enabled:

1981

2020

return socketserver.TCPServer.server_activate(self)

2059

2098

return True

2060

2099

2061

2100

2101

def rfc3339_duration_to_delta(duration):

2102

"""Parse an RFC 3339 "duration" and return a datetime.timedelta

2103

2104

>>> rfc3339_duration_to_delta("P7D")

2105

datetime.timedelta(7)

2106

>>> rfc3339_duration_to_delta("PT60S")

2107

datetime.timedelta(0, 60)

2108

>>> rfc3339_duration_to_delta("PT60M")

2109

datetime.timedelta(0, 3600)

2110

>>> rfc3339_duration_to_delta("PT24H")

2111

datetime.timedelta(1)

2112

>>> rfc3339_duration_to_delta("P1W")

2113

datetime.timedelta(7)

2114

>>> rfc3339_duration_to_delta("PT5M30S")

2115

datetime.timedelta(0, 330)

2116

>>> rfc3339_duration_to_delta("P1DT3M20S")

2117

datetime.timedelta(1, 200)

2118

"""

2119

2120

# Parsing an RFC 3339 duration with regular expressions is not

2121

# possible - there would have to be multiple places for the same

2122

# values, like seconds. The current code, while more esoteric, is

2123

# cleaner without depending on a parsing library. If Python had a

2124

# built-in library for parsing we would use it, but we'd like to

2125

# avoid excessive use of external libraries.

2126

2127

# New type for defining tokens, syntax, and semantics all-in-one

2128

Token = collections.namedtuple("Token",

2129

("regexp", # To match token; if

2130

# "value" is not None,

2131

# must have a "group"

2132

# containing digits

2133

"value", # datetime.timedelta or

2134

# None

2135

"followers")) # Tokens valid after

2136

# this token

2137

# RFC 3339 "duration" tokens, syntax, and semantics; taken from

2138

# the "duration" ABNF definition in RFC 3339, Appendix A.

2139

token_end = Token(re.compile(r"$"), None, frozenset())

2140

token_second = Token(re.compile(r"(\d+)S"),

2141

datetime.timedelta(seconds=1),

2142

frozenset((token_end,)))

2143

token_minute = Token(re.compile(r"(\d+)M"),

2144

datetime.timedelta(minutes=1),

2145

frozenset((token_second, token_end)))

2146

token_hour = Token(re.compile(r"(\d+)H"),

2147

datetime.timedelta(hours=1),

2148

frozenset((token_minute, token_end)))

2149

token_time = Token(re.compile(r"T"),

2150

None,

2151

frozenset((token_hour, token_minute,

2152

token_second)))

2153

token_day = Token(re.compile(r"(\d+)D"),

2154

datetime.timedelta(days=1),

2155

frozenset((token_time, token_end)))

2156

token_month = Token(re.compile(r"(\d+)M"),

2157

datetime.timedelta(weeks=4),

2158

frozenset((token_day, token_end)))

2159

token_year = Token(re.compile(r"(\d+)Y"),

2160

datetime.timedelta(weeks=52),

2161

frozenset((token_month, token_end)))

2162

token_week = Token(re.compile(r"(\d+)W"),

2163

datetime.timedelta(weeks=1),

2164

frozenset((token_end,)))

2165

token_duration = Token(re.compile(r"P"), None,

2166

frozenset((token_year, token_month,

2167

token_day, token_time,

2168

token_week)))

2169

# Define starting values

2170

value = datetime.timedelta() # Value so far

2171

found_token = None

2172

followers = frozenset((token_duration,)) # Following valid tokens

2173

s = duration # String left to parse

2174

# Loop until end token is found

2175

while found_token is not token_end:

2176

# Search for any currently valid tokens

2177

for token in followers:

2178

match = token.regexp.match(s)

2179

if match is not None:

2180

# Token found

2181

if token.value is not None:

2182

# Value found, parse digits

2183

factor = int(match.group(1), 10)

2184

# Add to value so far

2185

value += factor * token.value

2186

# Strip token from string

2187

s = token.regexp.sub("", s, 1)

2188

# Go to found token

2189

found_token = token

2190

# Set valid next tokens

2191

followers = found_token.followers

2192

break

2193

else:

2194

# No currently valid tokens were found

2195

raise ValueError("Invalid RFC 3339 duration")

2196

# End token found

2197

return value

2198

2199

2062

2200

def string_to_delta(interval):

2063

2201

"""Parse a string and return a datetime.timedelta

2064

2202

2075

2213

>>> string_to_delta('5m 30s')

2076

2214

datetime.timedelta(0, 330)

2077

2215

"""

2216

2217

try:

2218

return rfc3339_duration_to_delta(interval)

2219

except ValueError:

2220

pass

2221

2078

2222

timevalue = datetime.timedelta(0)

2079

2223

for s in interval.split():

2080

2224

try:

2081

suffix = unicode(s[-1])

2225

suffix = s[-1]

2082

2226

value = int(s[:-1])

2083

2227

if suffix == "d":

2084

2228

delta = datetime.timedelta(value)

2091

2235

elif suffix == "w":

2092

2236

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

2093

2237

else:

2094

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

2238

raise ValueError("Unknown suffix {!r}"

2095

2239

.format(suffix))

2096

except (ValueError, IndexError) as e:

2240

except IndexError as e:

2097

2241

raise ValueError(*(e.args))

2098

2242

timevalue += delta

2099

2243

return timevalue

2114

2258

# Close all standard open file descriptors

2115

2259

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

2116

2260

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

2117

raise OSError(errno.ENODEV,

2118

"{0} not a character device"

2261

raise OSError(errno.ENODEV, "{} not a character device"

2119

2262

.format(os.devnull))

2120

2263

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

2121

2264

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

2131

2274

2132

2275

parser = argparse.ArgumentParser()

2133

2276

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

2134

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

2277

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

2135

2278

help="show version number and exit")

2136

2279

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

2137

2280

help="Bind to interface IF")

2143

2286

help="Run self-test")

2144

2287

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

2145

2288

help="Debug mode; run in foreground and log"

2146

" to terminal")

2289

" to terminal", default=None)

2147

2290

parser.add_argument("--debuglevel", metavar="LEVEL",

2148

2291

help="Debug level for stdout output")

2149

2292

parser.add_argument("--priority", help="GnuTLS"

2156

2299

" files")

2157

2300

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

2158

2301

dest="use_dbus", help="Do not provide D-Bus"

2159

" system bus interface")

2302

" system bus interface", default=None)

2160

2303

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

2161

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

2304

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

2305

default=None)

2162

2306

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

2163

2307

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

2164

" state")

2308

" state", default=None)

2309

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

2310

help="Specify a file descriptor to a network"

2311

" socket to use instead of creating one")

2165

2312

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

2166

2313

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

2314

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

2315

help="Run in foreground", default=None)

2316

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

2317

dest="zeroconf", help="Do not use Zeroconf",

2318

default=None)

2167

2319

2168

2320

options = parser.parse_args()

2169

2321

2170

2322

if options.check:

2171

2323

import doctest

2172

doctest.testmod()

2173

sys.exit()

2324

fail_count, test_count = doctest.testmod()

2325

sys.exit(os.EX_OK if fail_count == 0 else 1)

2174

2326

2175

2327

# Default values for config file for server-global settings

2176

2328

server_defaults = { "interface": "",

2178

2330

"port": "",

2179

2331

"debug": "False",

2180

2332

"priority":

2181

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",

2333

"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:+SIGN-RSA-SHA224:+SIGN-RSA-RMD160",

2182

2334

"servicename": "Mandos",

2183

2335

"use_dbus": "True",

2184

2336

"use_ipv6": "True",

2185

2337

"debuglevel": "",

2186

2338

"restore": "True",

2187

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

2339

"socket": "",

2340

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

2341

"foreground": "False",

2342

"zeroconf": "True",

2188

2343

}

2189

2344

2190

2345

# Parse config file for server-global settings

2195

2350

# Convert the SafeConfigParser object to a dict

2196

2351

server_settings = server_config.defaults()

2197

2352

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

2198

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

2353

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

2199

2354

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

2200

2355

option)

2201

2356

if server_settings["port"]:

2202

2357

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

2203

2358

"port")

2359

if server_settings["socket"]:

2360

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

2361

"socket")

2362

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

2363

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

2364

# happen with a supplied network socket.

2365

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

2366

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

2367

["socket"])

2204

2368

del server_config

2205

2369

2206

2370

# Override the settings from the config file with command line

2208

2372

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

2209

2373

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

2210

2374

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

2211

"statedir"):

2375

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

2212

2376

value = getattr(options, option)

2213

2377

if value is not None:

2214

2378

server_settings[option] = value

2215

2379

del options

2216

2380

# Force all strings to be unicode

2217

2381

for option in server_settings.keys():

2218

if type(server_settings[option]) is str:

2219

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

2382

if isinstance(server_settings[option], bytes):

2383

server_settings[option] = (server_settings[option]

2384

.decode("utf-8"))

2385

# Force all boolean options to be boolean

2386

for option in ("debug", "use_dbus", "use_ipv6", "restore",

2387

"foreground", "zeroconf"):

2388

server_settings[option] = bool(server_settings[option])

2389

# Debug implies foreground

2390

if server_settings["debug"]:

2391

server_settings["foreground"] = True

2220

2392

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

2221

2393

2222

2394

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

2223

2395

2396

if (not server_settings["zeroconf"] and

2397

not (server_settings["port"]

2398

or server_settings["socket"] != "")):

2399

parser.error("Needs port or socket to work without"

2400

" Zeroconf")

2401

2224

2402

# For convenience

2225

2403

debug = server_settings["debug"]

2226

2404

debuglevel = server_settings["debuglevel"]

2228

2406

use_ipv6 = server_settings["use_ipv6"]

2229

2407

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

2230

2408

stored_state_file)

2409

foreground = server_settings["foreground"]

2410

zeroconf = server_settings["zeroconf"]

2231

2411

2232

2412

if debug:

2233

2413

initlogger(debug, logging.DEBUG)

2240

2420

2241

2421

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

2242

2422

syslogger.setFormatter(logging.Formatter

2243

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

2423

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

2244

2424

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

2245

2425

.format(server_settings

2246

2426

["servicename"])))

2254

2434

global mandos_dbus_service

2255

2435

mandos_dbus_service = None

2256

2436

2437

socketfd = None

2438

if server_settings["socket"] != "":

2439

socketfd = server_settings["socket"]

2257

2440

tcp_server = MandosServer((server_settings["address"],

2258

2441

server_settings["port"]),

2259

2442

ClientHandler,

2262

2445

use_ipv6=use_ipv6,

2263

2446

gnutls_priority=

2264

2447

server_settings["priority"],

2265

use_dbus=use_dbus)

2266

if not debug:

2267

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

2448

use_dbus=use_dbus,

2449

socketfd=socketfd)

2450

if not foreground:

2451

pidfilename = "/run/mandos.pid"

2452

if not os.path.isdir("/run/."):

2453

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

2454

pidfile = None

2268

2455

try:

2269

2456

pidfile = open(pidfilename, "w")

2270

2457

except IOError as e:

2285

2472

os.setgid(gid)

2286

2473

os.setuid(uid)

2287

2474

except OSError as error:

2288

if error[0] != errno.EPERM:

2289

raise error

2475

if error.errno != errno.EPERM:

2476

raise

2290

2477

2291

2478

if debug:

2292

2479

# Enable all possible GnuTLS debugging

2309

2496

os.close(null)

2310

2497

2311

2498

# Need to fork before connecting to D-Bus

2312

if not debug:

2499

if not foreground:

2313

2500

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

2314

2501

daemon()

2315

2502

2503

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

2504

# need to inform gobject that threads will be used.

2316

2505

gobject.threads_init()

2317

2506

2318

2507

global main_loop

2333

2522

use_dbus = False

2334

2523

server_settings["use_dbus"] = False

2335

2524

tcp_server.use_dbus = False

2336

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2337

service = AvahiServiceToSyslog(name =

2338

server_settings["servicename"],

2339

servicetype = "_mandos._tcp",

2340

protocol = protocol, bus = bus)

2341

if server_settings["interface"]:

2342

service.interface = (if_nametoindex

2343

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

2525

if zeroconf:

2526

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2527

service = AvahiServiceToSyslog(name =

2528

server_settings["servicename"],

2529

servicetype = "_mandos._tcp",

2530

protocol = protocol, bus = bus)

2531

if server_settings["interface"]:

2532

service.interface = (if_nametoindex

2533

(server_settings["interface"]

2534

.encode("utf-8")))

2344

2535

2345

2536

global multiprocessing_manager

2346

2537

multiprocessing_manager = multiprocessing.Manager()

2353

2544

old_client_settings = {}

2354

2545

clients_data = {}

2355

2546

2547

# This is used to redirect stdout and stderr for checker processes

2548

global wnull

2549

wnull = open(os.devnull, "w") # A writable /dev/null

2550

# Only used if server is running in foreground but not in debug

2551

# mode

2552

if debug or not foreground:

2553

wnull.close()

2554

2356

2555

# Get client data and settings from last running state.

2357

2556

if server_settings["restore"]:

2358

2557

try:

2362

2561

os.remove(stored_state_path)

2363

2562

except IOError as e:

2364

2563

if e.errno == errno.ENOENT:

2365

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

2564

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

2366

2565

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

2367

2566

else:

2368

2567

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

2373

2572

"EOFError:", exc_info=e)

2374

2573

2375

2574

with PGPEngine() as pgp:

2376

for client_name, client in clients_data.iteritems():

2575

for client_name, client in clients_data.items():

2576

# Skip removed clients

2577

if client_name not in client_settings:

2578

continue

2579

2377

2580

# Decide which value to use after restoring saved state.

2378

2581

# We have three different values: Old config file,

2379

2582

# new config file, and saved state.

2400

2603

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

2401

2604

if not client["last_checked_ok"]:

2402

2605

logger.warning(

2403

"disabling client {0} - Client never "

2606

"disabling client {} - Client never "

2404

2607

"performed a successful checker"

2405

2608

.format(client_name))

2406

2609

client["enabled"] = False

2407

2610

elif client["last_checker_status"] != 0:

2408

2611

logger.warning(

2409

"disabling client {0} - Client "

2410

"last checker failed with error code {1}"

2612

"disabling client {} - Client last"

2613

" checker failed with error code {}"

2411

2614

.format(client_name,

2412

2615

client["last_checker_status"]))

2413

2616

client["enabled"] = False

2416

2619

.utcnow()

2417

2620

+ client["timeout"])

2418

2621

logger.debug("Last checker succeeded,"

2419

" keeping {0} enabled"

2622

" keeping {} enabled"

2420

2623

.format(client_name))

2421

2624

try:

2422

2625

client["secret"] = (

2425

2628

["secret"]))

2426

2629

except PGPError:

2427

2630

# If decryption fails, we use secret from new settings

2428

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

2631

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

2429

2632

.format(client_name))

2430

2633

client["secret"] = (

2431

2634

client_settings[client_name]["secret"])

2439

2642

clients_data[client_name] = client_settings[client_name]

2440

2643

2441

2644

# Create all client objects

2442

for client_name, client in clients_data.iteritems():

2645

for client_name, client in clients_data.items():

2443

2646

tcp_server.clients[client_name] = client_class(

2444

name = client_name, settings = client)

2647

name = client_name, settings = client,

2648

server_settings = server_settings)

2445

2649

2446

2650

if not tcp_server.clients:

2447

2651

logger.warning("No clients defined")

2448

2652

2449

if not debug:

2450

try:

2451

with pidfile:

2452

pid = os.getpid()

2453

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

2454

del pidfile

2455

except IOError:

2456

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

2457

pidfilename, pid)

2458

except NameError:

2459

# "pidfile" was never created

2460

pass

2653

if not foreground:

2654

if pidfile is not None:

2655

try:

2656

with pidfile:

2657

pid = os.getpid()

2658

pidfile.write("{}\n".format(pid).encode("utf-8"))

2659

except IOError:

2660

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

2661

pidfilename, pid)

2662

del pidfile

2461

2663

del pidfilename

2462

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

2463

2664

2464

2665

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

2465

2666

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

2530

2731

2531

2732

def cleanup():

2532

2733

"Cleanup function; run on exit"

2533

service.cleanup()

2734

if zeroconf:

2735

service.cleanup()

2534

2736

2535

2737

multiprocessing.active_children()

2738

wnull.close()

2536

2739

if not (tcp_server.clients or client_settings):

2537

2740

return

2538

2741

2549

2752

2550

2753

# A list of attributes that can not be pickled

2551

2754

# + secret.

2552

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

2553

"checker"))

2755

exclude = { "bus", "changedstate", "secret",

2756

"checker", "server_settings" }

2554

2757

for name, typ in (inspect.getmembers

2555

2758

(dbus.service.Object)):

2556

2759

exclude.add(name)

2579

2782

except NameError:

2580

2783

pass

2581

2784

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

2582

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

2785

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

2583

2786

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

2584

2787

else:

2585

2788

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

2586

2789

exc_info=e)

2587

raise e

2790

raise

2588

2791

2589

2792

# Delete all clients, and settings from config

2590

2793

while tcp_server.clients:

2614

2817

tcp_server.server_activate()

2615

2818

2616

2819

# Find out what port we got

2617

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

2820

if zeroconf:

2821

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

2618

2822

if use_ipv6:

2619

2823

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

2620

2824

" flowinfo %d, scope_id %d",

2626

2830

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

2627

2831

2628

2832

try:

2629

# From the Avahi example code

2630

try:

2631

service.activate()

2632

except dbus.exceptions.DBusException as error:

2633

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

2634

cleanup()

2635

sys.exit(1)

2636

# End of Avahi example code

2833

if zeroconf:

2834

# From the Avahi example code

2835

try:

2836

service.activate()

2837

except dbus.exceptions.DBusException as error:

2838

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

2839

cleanup()

2840

sys.exit(1)

2841

# End of Avahi example code

2637

2842

2638

2843

gobject.io_add_watch(tcp_server.fileno(), gobject.IO_IN,

2639

2844

lambda *args, **kwargs: