/mandos/release : revision 316

1

#!/usr/bin/python2.7

1

#!/usr/bin/python

2

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

3

#

4

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

88

except ImportError:

89

SO_BINDTODEVICE = None

90

91

if sys.version_info.major == 2:

92

str = unicode

93

94

version = "1.6.9"

91

version = "1.6.5"

95

92

stored_state_file = "clients.pickle"

96

93

97

94

logger = logging.getLogger()

107

104

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

108

105

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

109

106

ifreq = fcntl.ioctl(s, SIOCGIFINDEX,

110

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

111

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

107

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

108

interface))

109

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

110

ifreq[16:20])[0]

112

111

return interface_index

113

112

114

113

115

114

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

116

115

"""init logger and add loglevel"""

117

116

118

global syslogger

119

117

syslogger = (logging.handlers.SysLogHandler

120

118

(facility =

121

119

logging.handlers.SysLogHandler.LOG_DAEMON,

122

address = "/dev/log"))

120

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

123

121

syslogger.setFormatter(logging.Formatter

124

122

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

125

123

' %(message)s'))

225

223

class AvahiError(Exception):

226

224

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

227

225

self.value = value

228

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

229

**kwargs)

226

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

227

def __unicode__(self):

228

return unicode(repr(self.value))

230

229

231

230

class AvahiServiceError(AvahiError):

232

231

pass

275

274

self.bus = bus

276

275

self.entry_group_state_changed_match = None

277

276

278

def rename(self, remove=True):

277

def rename(self):

279

278

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

280

279

if self.rename_count >= self.max_renames:

281

280

logger.critical("No suitable Zeroconf service name found"

282

281

" after %i retries, exiting.",

283

282

self.rename_count)

284

283

raise AvahiServiceError("Too many renames")

285

self.name = str(self.server

286

.GetAlternativeServiceName(self.name))

287

self.rename_count += 1

284

self.name = unicode(self.server

285

.GetAlternativeServiceName(self.name))

288

286

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

289

287

self.name)

290

if remove:

291

self.remove()

288

self.remove()

292

289

try:

293

290

self.add()

294

291

except dbus.exceptions.DBusException as error:

295

if (error.get_dbus_name()

296

== "org.freedesktop.Avahi.CollisionError"):

297

logger.info("Local Zeroconf service name collision.")

298

return self.rename(remove=False)

299

else:

300

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

301

self.cleanup()

302

os._exit(1)

292

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

293

self.cleanup()

294

os._exit(1)

295

self.rename_count += 1

303

296

304

297

def remove(self):

305

298

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

343

336

self.rename()

344

337

elif state == avahi.ENTRY_GROUP_FAILURE:

345

338

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

346

str(error))

347

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

339

unicode(error))

340

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

348

341

.format(error))

349

342

350

343

def cleanup(self):

397

390

398

391

399

392

class AvahiServiceToSyslog(AvahiService):

400

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

393

def rename(self):

401

394

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

402

ret = AvahiService.rename(self, *args, **kwargs)

395

ret = AvahiService.rename(self)

403

396

syslogger.setFormatter(logging.Formatter

404

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

397

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

405

398

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

406

399

.format(self.name)))

407

400

return ret

408

401

409

402

403

def timedelta_to_milliseconds(td):

404

"Convert a datetime.timedelta() to milliseconds"

405

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

406

+ (td.seconds * 1000)

407

+ (td.microseconds // 1000))

408

409

410

class Client(object):

411

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

412

467

"enabled": "True",

468

}

469

470

def timeout_milliseconds(self):

471

"Return the 'timeout' attribute in milliseconds"

472

return timedelta_to_milliseconds(self.timeout)

473

474

def extended_timeout_milliseconds(self):

475

"Return the 'extended_timeout' attribute in milliseconds"

476

return timedelta_to_milliseconds(self.extended_timeout)

477

478

def interval_milliseconds(self):

479

"Return the 'interval' attribute in milliseconds"

480

return timedelta_to_milliseconds(self.interval)

481

482

def approval_delay_milliseconds(self):

483

return timedelta_to_milliseconds(self.approval_delay)

484

470

485

@staticmethod

471

486

def config_parser(config):

472

487

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

497

512

"rb") as secfile:

498

513

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

499

514

else:

500

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

515

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

501

516

.format(section))

502

517

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

503

518

client["extended_timeout"] = string_to_delta(

520

535

server_settings = {}

521

536

self.server_settings = server_settings

522

537

# adding all client settings

523

for setting, value in settings.items():

538

for setting, value in settings.iteritems():

524

539

setattr(self, setting, value)

525

540

526

541

if self.enabled:

609

624

if self.checker_initiator_tag is not None:

610

625

gobject.source_remove(self.checker_initiator_tag)

611

626

self.checker_initiator_tag = (gobject.timeout_add

612

(int(self.interval

613

.total_seconds() * 1000),

627

(self.interval_milliseconds(),

614

628

self.start_checker))

615

629

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

616

630

if self.disable_initiator_tag is not None:

617

631

gobject.source_remove(self.disable_initiator_tag)

618

632

self.disable_initiator_tag = (gobject.timeout_add

619

(int(self.timeout

620

.total_seconds() * 1000),

621

self.disable))

633

(self.timeout_milliseconds(),

634

self.disable))

622

635

# Also start a new checker *right now*.

623

636

self.start_checker()

624

637

655

668

self.disable_initiator_tag = None

656

669

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

657

670

self.disable_initiator_tag = (gobject.timeout_add

658

(int(timeout.total_seconds()

659

* 1000), self.disable))

671

(timedelta_to_milliseconds

672

(timeout), self.disable))

660

673

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

661

674

662

675

def need_approval(self):

693

706

# Start a new checker if needed

694

707

if self.checker is None:

695

708

# Escape attributes for the shell

696

escaped_attrs = { attr:

697

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

698

for attr in self.runtime_expansions }

709

escaped_attrs = dict(

710

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

711

for attr in

712

self.runtime_expansions)

699

713

try:

700

714

command = self.checker_command % escaped_attrs

701

715

except TypeError as error:

782

796

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

783

797

if byte_arrays and signature != "ay":

784

798

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

785

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

799

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

786

800

def decorator(func):

787

801

func._dbus_is_property = True

788

802

func._dbus_interface = dbus_interface

819

833

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

820

834

Usage:

821

835

822

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

823

"org.freedesktop.DBus.Property."

824

"EmitsChangedSignal": "false"})

825

836

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

826

837

access="r")

838

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

839

"org.freedesktop.DBus.Property."

840

"EmitsChangedSignal": "false"})

827

841

def Property_dbus_property(self):

828

842

return dbus.Boolean(False)

829

843

"""

836

850

class DBusPropertyException(dbus.exceptions.DBusException):

837

851

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

838

852

"""

839

pass

853

def __unicode__(self):

854

return unicode(str(self))

855

840

856

841

857

class DBusPropertyAccessException(DBusPropertyException):

842

858

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

865

881

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

866

882

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

867

883

"""

868

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

884

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

869

885

False)

870

886

871

887

def _get_all_dbus_things(self, thing):

921

937

# signatures other than "ay".

922

938

if prop._dbus_signature != "ay":

923

939

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

924

"'ay' signature {!r}"

940

"'ay' signature {0!r}"

925

941

.format(prop._dbus_signature))

926

942

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

927

943

for byte in value))

952

968

value.variant_level+1)

953

969

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

954

970

955

@dbus.service.signal(dbus.PROPERTIES_IFACE, signature="sa{sv}as")

956

def PropertiesChanged(self, interface_name, changed_properties,

957

invalidated_properties):

958

"""Standard D-Bus PropertiesChanged() signal, see D-Bus

959

standard.

960

"""

961

pass

962

963

971

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

964

972

out_signature="s",

965

973

path_keyword='object_path',

1000

1008

(prop,

1001

1009

"_dbus_annotations",

1002

1010

{}))

1003

for name, value in annots.items():

1011

for name, value in annots.iteritems():

1004

1012

ann_tag = document.createElement(

1005

1013

"annotation")

1006

1014

ann_tag.setAttribute("name", name)

1009

1017

# Add interface annotation tags

1010

1018

for annotation, value in dict(

1011

1019

itertools.chain.from_iterable(

1012

annotations().items()

1020

annotations().iteritems()

1013

1021

for name, annotations in

1014

1022

self._get_all_dbus_things("interface")

1015

1023

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

1016

)).items():

1024

)).iteritems():

1017

1025

ann_tag = document.createElement("annotation")

1018

1026

ann_tag.setAttribute("name", annotation)

1019

1027

ann_tag.setAttribute("value", value)

1075

1083

"""

1076

1084

def wrapper(cls):

1077

1085

for orig_interface_name, alt_interface_name in (

1078

alt_interface_names.items()):

1086

alt_interface_names.iteritems()):

1079

1087

attr = {}

1080

1088

interface_names = set()

1081

1089

# Go though all attributes of the class

1198

1206

attribute.func_closure)))

1199

1207

if deprecate:

1200

1208

# Deprecate all alternate interfaces

1201

iname="_AlternateDBusNames_interface_annotation{}"

1209

iname="_AlternateDBusNames_interface_annotation{0}"

1202

1210

for interface_name in interface_names:

1203

1211

@dbus_interface_annotations(interface_name)

1204

1212

def func(self):

1213

1221

if interface_names:

1214

1222

# Replace the class with a new subclass of it with

1215

1223

# methods, signals, etc. as created above.

1216

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

1224

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

1217

1225

(cls,), attr)

1218

1226

return cls

1219

1227

return wrapper

1232

1240

runtime_expansions = (Client.runtime_expansions

1233

1241

+ ("dbus_object_path",))

1234

1242

1235

_interface = "se.recompile.Mandos.Client"

1236

1237

1243

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

1238

1244

1239

1245

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

1241

1247

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

1242

1248

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

1243

1249

# the D-Bus

1244

client_object_name = str(self.name).translate(

1250

client_object_name = unicode(self.name).translate(

1245

1251

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

1246

1252

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

1247

1253

self.dbus_object_path = (dbus.ObjectPath

1251

1257

1252

1258

def notifychangeproperty(transform_func,

1253

1259

dbus_name, type_func=lambda x: x,

1254

variant_level=1, invalidate_only=False,

1255

_interface=_interface):

1260

variant_level=1):

1256

1261

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

1257

1262

its changes to DBus.

1258

1263

1268

to the D-Bus. Default: no transform

1264

1269

variant_level: D-Bus variant level. Default: 1

1265

1270

"""

1266

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

1271

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

1267

1272

def setter(self, value):

1268

1273

if hasattr(self, "dbus_object_path"):

1269

1274

if (not hasattr(self, attrname) or

1270

1275

type_func(getattr(self, attrname, None))

1271

1276

!= type_func(value)):

1272

if invalidate_only:

1273

self.PropertiesChanged(_interface,

1274

dbus.Dictionary(),

1275

dbus.Array

1276

((dbus_name,)))

1277

else:

1278

dbus_value = transform_func(type_func(value),

1279

variant_level

1280

=variant_level)

1281

self.PropertyChanged(dbus.String(dbus_name),

1282

dbus_value)

1283

self.PropertiesChanged(_interface,

1284

dbus.Dictionary({

1285

dbus.String(dbus_name):

1286

dbus_value }), dbus.Array())

1277

dbus_value = transform_func(type_func(value),

1278

variant_level

1279

=variant_level)

1280

self.PropertyChanged(dbus.String(dbus_name),

1281

dbus_value)

1287

1282

setattr(self, attrname, value)

1288

1283

1289

1284

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

1309

1304

approval_delay = notifychangeproperty(dbus.UInt64,

1310

1305

"ApprovalDelay",

1311

1306

type_func =

1312

lambda td: td.total_seconds()

1313

* 1000)

1307

timedelta_to_milliseconds)

1314

1308

approval_duration = notifychangeproperty(

1315

1309

dbus.UInt64, "ApprovalDuration",

1316

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

1310

type_func = timedelta_to_milliseconds)

1317

1311

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

1318

1312

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

1319

type_func = lambda td:

1320

td.total_seconds() * 1000)

1313

type_func =

1314

timedelta_to_milliseconds)

1321

1315

extended_timeout = notifychangeproperty(

1322

1316

dbus.UInt64, "ExtendedTimeout",

1323

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

1317

type_func = timedelta_to_milliseconds)

1324

1318

interval = notifychangeproperty(dbus.UInt64,

1325

1319

"Interval",

1326

1320

type_func =

1327

lambda td: td.total_seconds()

1328

* 1000)

1321

timedelta_to_milliseconds)

1329

1322

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

1330

secret = notifychangeproperty(dbus.ByteArray, "Secret",

1331

invalidate_only=True)

1332

1323

1333

1324

del notifychangeproperty

1334

1325

1376

1367

1377

1368

def approve(self, value=True):

1378

1369

self.approved = value

1379

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

1380

* 1000), self._reset_approved)

1370

gobject.timeout_add(timedelta_to_milliseconds

1371

(self.approval_duration),

1372

self._reset_approved)

1381

1373

self.send_changedstate()

1382

1374

1383

1375

## D-Bus methods, signals & properties

1376

_interface = "se.recompile.Mandos.Client"

1384

1377

1385

1378

## Interfaces

1386

1379

1380

@dbus_interface_annotations(_interface)

1381

def _foo(self):

1382

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

1383

"false"}

1384

1387

1385

## Signals

1388

1386

1389

1387

# CheckerCompleted - signal

1399

1397

pass

1400

1398

1401

1399

# PropertyChanged - signal

1402

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

1403

1400

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

1404

1401

def PropertyChanged(self, property, value):

1405

1402

"D-Bus signal"

1481

1478

access="readwrite")

1482

1479

def ApprovalDelay_dbus_property(self, value=None):

1483

1480

if value is None: # get

1484

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

1485

* 1000)

1481

return dbus.UInt64(self.approval_delay_milliseconds())

1486

1482

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

1487

1483

1488

1484

# ApprovalDuration - property

1490

1486

access="readwrite")

1491

1487

def ApprovalDuration_dbus_property(self, value=None):

1492

1488

if value is None: # get

1493

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

1494

* 1000)

1489

return dbus.UInt64(timedelta_to_milliseconds(

1490

self.approval_duration))

1495

1491

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

1496

1492

1497

1493

# Name - property

1510

1506

def Host_dbus_property(self, value=None):

1511

1507

if value is None: # get

1512

1508

return dbus.String(self.host)

1513

self.host = str(value)

1509

self.host = unicode(value)

1514

1510

1515

1511

# Created - property

1516

1512

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

1563

1559

access="readwrite")

1564

1560

def Timeout_dbus_property(self, value=None):

1565

1561

if value is None: # get

1566

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

1562

return dbus.UInt64(self.timeout_milliseconds())

1567

1563

old_timeout = self.timeout

1568

1564

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

1569

1565

# Reschedule disabling

1580

1576

gobject.source_remove(self.disable_initiator_tag)

1581

1577

self.disable_initiator_tag = (

1582

1578

gobject.timeout_add(

1583

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

1584

* 1000), self.disable))

1579

timedelta_to_milliseconds(self.expires - now),

1580

self.disable))

1585

1581

1586

1582

# ExtendedTimeout - property

1587

1583

@dbus_service_property(_interface, signature="t",

1588

1584

access="readwrite")

1589

1585

def ExtendedTimeout_dbus_property(self, value=None):

1590

1586

if value is None: # get

1591

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

1592

* 1000)

1587

return dbus.UInt64(self.extended_timeout_milliseconds())

1593

1588

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

1594

1589

1595

1590

# Interval - property

1597

1592

access="readwrite")

1598

1593

def Interval_dbus_property(self, value=None):

1599

1594

if value is None: # get

1600

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

1595

return dbus.UInt64(self.interval_milliseconds())

1601

1596

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

1602

1597

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

1603

1598

return

1614

1609

def Checker_dbus_property(self, value=None):

1615

1610

if value is None: # get

1616

1611

return dbus.String(self.checker_command)

1617

self.checker_command = str(value)

1612

self.checker_command = unicode(value)

1618

1613

1619

1614

# CheckerRunning - property

1620

1615

@dbus_service_property(_interface, signature="b",

1636

1631

@dbus_service_property(_interface, signature="ay",

1637

1632

access="write", byte_arrays=True)

1638

1633

def Secret_dbus_property(self, value):

1639

self.secret = bytes(value)

1634

self.secret = str(value)

1640

1635

1641

1636

del _interface

1642

1637

1676

1671

def handle(self):

1677

1672

with contextlib.closing(self.server.child_pipe) as child_pipe:

1678

1673

logger.info("TCP connection from: %s",

1679

str(self.client_address))

1674

unicode(self.client_address))

1680

1675

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

1681

1676

self.server.child_pipe.fileno())

1682

1677

1763

1758

if self.server.use_dbus:

1764

1759

# Emit D-Bus signal

1765

1760

client.NeedApproval(

1766

client.approval_delay.total_seconds()

1767

* 1000, client.approved_by_default)

1761

client.approval_delay_milliseconds(),

1762

client.approved_by_default)

1768

1763

else:

1769

1764

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

1770

1765

client.name)

1776

1771

#wait until timeout or approved

1777

1772

time = datetime.datetime.now()

1778

1773

client.changedstate.acquire()

1779

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

1774

client.changedstate.wait(

1775

float(timedelta_to_milliseconds(delay)

1776

/ 1000))

1780

1777

client.changedstate.release()

1781

1778

time2 = datetime.datetime.now()

1782

1779

if (time2 - time) >= delay:

1981

1978

try:

1982

1979

self.socket.setsockopt(socket.SOL_SOCKET,

1983

1980

SO_BINDTODEVICE,

1984

(self.interface + "\0")

1985

.encode("utf-8"))

1981

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

1986

1982

except socket.error as error:

1987

1983

if error.errno == errno.EPERM:

1988

1984

logger.error("No permission to bind to"

2191

2187

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

2192

2188

frozenset((token_year, token_month,

2193

2189

token_day, token_time,

2194

token_week)))

2190

token_week))),

2195

2191

# Define starting values

2196

2192

value = datetime.timedelta() # Value so far

2197

2193

found_token = None

2198

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

2194

followers = frozenset(token_duration,) # Following valid tokens

2199

2195

s = duration # String left to parse

2200

2196

# Loop until end token is found

2201

2197

while found_token is not token_end:

2248

2244

timevalue = datetime.timedelta(0)

2249

2245

for s in interval.split():

2250

2246

try:

2251

suffix = s[-1]

2247

suffix = unicode(s[-1])

2252

2248

value = int(s[:-1])

2253

2249

if suffix == "d":

2254

2250

delta = datetime.timedelta(value)

2261

2257

elif suffix == "w":

2262

2258

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

2263

2259

else:

2264

raise ValueError("Unknown suffix {!r}"

2260

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

2265

2261

.format(suffix))

2266

2262

except IndexError as e:

2267

2263

raise ValueError(*(e.args))

2284

2280

# Close all standard open file descriptors

2285

2281

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

2286

2282

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

2287

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

2283

raise OSError(errno.ENODEV,

2284

"{0} not a character device"

2288

2285

.format(os.devnull))

2289

2286

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

2290

2287

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

2300

2297

2301

2298

parser = argparse.ArgumentParser()

2302

2299

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

2303

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

2300

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

2304

2301

help="show version number and exit")

2305

2302

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

2306

2303

help="Bind to interface IF")

2339

2336

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

2340

2337

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

2341

2338

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

2342

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

2343

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

2344

default=None)

2345

2339

2346

2340

options = parser.parse_args()

2347

2341

2365

2359

"socket": "",

2366

2360

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

2367

2361

"foreground": "False",

2368

"zeroconf": "True",

2369

2362

}

2370

2363

2371

2364

# Parse config file for server-global settings

2398

2391

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

2399

2392

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

2400

2393

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

2401

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

2394

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

2402

2395

value = getattr(options, option)

2403

2396

if value is not None:

2404

2397

server_settings[option] = value

2405

2398

del options

2406

2399

# Force all strings to be unicode

2407

2400

for option in server_settings.keys():

2408

if isinstance(server_settings[option], bytes):

2409

server_settings[option] = (server_settings[option]

2410

.decode("utf-8"))

2401

if type(server_settings[option]) is str:

2402

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

2411

2403

# Force all boolean options to be boolean

2412

2404

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

2413

"foreground", "zeroconf"):

2405

"foreground"):

2414

2406

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

2415

2407

# Debug implies foreground

2416

2408

if server_settings["debug"]:

2419

2411

2420

2412

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

2421

2413

2422

if (not server_settings["zeroconf"] and

2423

not (server_settings["port"]

2424

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

2425

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

2426

" Zeroconf")

2427

2428

2414

# For convenience

2429

2415

debug = server_settings["debug"]

2430

2416

debuglevel = server_settings["debuglevel"]

2433

2419

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

2434

2420

stored_state_file)

2435

2421

foreground = server_settings["foreground"]

2436

zeroconf = server_settings["zeroconf"]

2437

2422

2438

2423

if debug:

2439

2424

initlogger(debug, logging.DEBUG)

2446

2431

2447

2432

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

2448

2433

syslogger.setFormatter(logging.Formatter

2449

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

2434

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

2450

2435

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

2451

2436

.format(server_settings

2452

2437

["servicename"])))

2460

2445

global mandos_dbus_service

2461

2446

mandos_dbus_service = None

2462

2447

2463

socketfd = None

2464

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

2465

socketfd = server_settings["socket"]

2466

2448

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

2467

2449

server_settings["port"]),

2468

2450

ClientHandler,

2472

2454

gnutls_priority=

2473

2455

server_settings["priority"],

2474

2456

use_dbus=use_dbus,

2475

socketfd=socketfd)

2457

socketfd=(server_settings["socket"]

2458

or None))

2476

2459

if not foreground:

2477

2460

pidfilename = "/run/mandos.pid"

2478

2461

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

2548

2531

use_dbus = False

2549

2532

server_settings["use_dbus"] = False

2550

2533

tcp_server.use_dbus = False

2551

if zeroconf:

2552

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2553

service = AvahiServiceToSyslog(name =

2554

server_settings["servicename"],

2555

servicetype = "_mandos._tcp",

2556

protocol = protocol, bus = bus)

2557

if server_settings["interface"]:

2558

service.interface = (if_nametoindex

2559

(server_settings["interface"]

2560

.encode("utf-8")))

2534

protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET

2535

service = AvahiServiceToSyslog(name =

2536

server_settings["servicename"],

2537

servicetype = "_mandos._tcp",

2538

protocol = protocol, bus = bus)

2539

if server_settings["interface"]:

2540

service.interface = (if_nametoindex

2541

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

2561

2542

2562

2543

global multiprocessing_manager

2563

2544

multiprocessing_manager = multiprocessing.Manager()

2587

2568

os.remove(stored_state_path)

2588

2569

except IOError as e:

2589

2570

if e.errno == errno.ENOENT:

2590

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

2571

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

2591

2572

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

2592

2573

else:

2593

2574

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

2598

2579

"EOFError:", exc_info=e)

2599

2580

2600

2581

with PGPEngine() as pgp:

2601

for client_name, client in clients_data.items():

2582

for client_name, client in clients_data.iteritems():

2602

2583

# Skip removed clients

2603

2584

if client_name not in client_settings:

2604

2585

continue

2629

2610

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

2630

2611

if not client["last_checked_ok"]:

2631

2612

logger.warning(

2632

"disabling client {} - Client never "

2613

"disabling client {0} - Client never "

2633

2614

"performed a successful checker"

2634

2615

.format(client_name))

2635

2616

client["enabled"] = False

2636

2617

elif client["last_checker_status"] != 0:

2637

2618

logger.warning(

2638

"disabling client {} - Client last"

2639

" checker failed with error code {}"

2619

"disabling client {0} - Client "

2620

"last checker failed with error code {1}"

2640

2621

.format(client_name,

2641

2622

client["last_checker_status"]))

2642

2623

client["enabled"] = False

2645

2626

.utcnow()

2646

2627

+ client["timeout"])

2647

2628

logger.debug("Last checker succeeded,"

2648

" keeping {} enabled"

2629

" keeping {0} enabled"

2649

2630

.format(client_name))

2650

2631

try:

2651

2632

client["secret"] = (

2654

2635

["secret"]))

2655

2636

except PGPError:

2656

2637

# If decryption fails, we use secret from new settings

2657

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

2638

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

2658

2639

.format(client_name))

2659

2640

client["secret"] = (

2660

2641

client_settings[client_name]["secret"])

2668

2649

clients_data[client_name] = client_settings[client_name]

2669

2650

2670

2651

# Create all client objects

2671

for client_name, client in clients_data.items():

2652

for client_name, client in clients_data.iteritems():

2672

2653

tcp_server.clients[client_name] = client_class(

2673

2654

name = client_name, settings = client,

2674

2655

server_settings = server_settings)

2681

2662

try:

2682

2663

with pidfile:

2683

2664

pid = os.getpid()

2684

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

2665

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

2685

2666

except IOError:

2686

2667

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

2687

2668

pidfilename, pid)

2733

2714

def GetAllClientsWithProperties(self):

2734

2715

"D-Bus method"

2735

2716

return dbus.Dictionary(

2736

{ c.dbus_object_path: c.GetAll("")

2737

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

2717

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

2718

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

2738

2719

signature="oa{sv}")

2739

2720

2740

2721

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

2757

2738

2758

2739

def cleanup():

2759

2740

"Cleanup function; run on exit"

2760

if zeroconf:

2761

service.cleanup()

2741

service.cleanup()

2762

2742

2763

2743

multiprocessing.active_children()

2764

2744

wnull.close()

2778

2758

2779

2759

# A list of attributes that can not be pickled

2780

2760

# + secret.

2781

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

2782

"checker", "server_settings" }

2761

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

2762

"checker", "server_settings"))

2783

2763

for name, typ in (inspect.getmembers

2784

2764

(dbus.service.Object)):

2785

2765

exclude.add(name)

2808

2788

except NameError:

2809

2789

pass

2810

2790

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

2811

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

2791

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

2812

2792

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

2813

2793

else:

2814

2794

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

2843

2823

tcp_server.server_activate()

2844

2824

2845

2825

# Find out what port we got

2846

if zeroconf:

2847

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

2826

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

2848

2827

if use_ipv6:

2849

2828

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

2850

2829

" flowinfo %d, scope_id %d",

2856

2835

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

2857

2836

2858

2837

try:

2859

if zeroconf:

2860

# From the Avahi example code

2861

try:

2862

service.activate()

2863

except dbus.exceptions.DBusException as error:

2864

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

2865

cleanup()

2866

sys.exit(1)

2867

# End of Avahi example code

2838

# From the Avahi example code

2839

try:

2840

service.activate()

2841

except dbus.exceptions.DBusException as error:

2842

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

2843

cleanup()

2844

sys.exit(1)

2845

# End of Avahi example code

2868

2846

2869

2847

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

2870

2848

lambda *args, **kwargs: