/mandos/release : revision 237.7.801

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#!/usr/bin/python

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

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#!/usr/bin/python3 -bI

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# -*- mode: python; after-save-hook: (lambda () (let ((command (if (fboundp 'file-local-name) (file-local-name (buffer-file-name)) (or (file-remote-p (buffer-file-name) 'localname) (buffer-file-name))))) (if (= (progn (if (get-buffer "*Test*") (kill-buffer "*Test*")) (process-file-shell-command (format "%s --check" (shell-quote-argument command)) nil "*Test*")) 0) (let ((w (get-buffer-window "*Test*"))) (if w (delete-window w))) (progn (with-current-buffer "*Test*" (compilation-mode)) (display-buffer "*Test*" '(display-buffer-in-side-window)))))); coding: utf-8 -*-

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#

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

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#

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

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#

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# Everything else is

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14

15

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#

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# This file is part of Mandos.

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#

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import itertools

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import collections

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import codecs

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import unittest

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import random

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import shlex

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import dbus

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import dbus.service

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if sys.version_info.major == 2:

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__metaclass__ = type

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str = unicode

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# Add collections.abc.Callable if it does not exist

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try:

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collections.abc.Callable

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except AttributeError:

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class abc:

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Callable = collections.Callable

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collections.abc = abc

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del abc

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107

# Add shlex.quote if it does not exist

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try:

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shlex.quote

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except AttributeError:

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shlex.quote = re.escape

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# Show warnings by default

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if not sys.warnoptions:

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import warnings

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warnings.simplefilter("default")

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# Try to find the value of SO_BINDTODEVICE:

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try:

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# No value found

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SO_BINDTODEVICE = None

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if sys.version_info.major == 2:

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str = unicode

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if sys.version_info < (3, 2):

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configparser.Configparser = configparser.SafeConfigParser

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version = "1.8.7"

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version = "1.8.14"

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stored_state_file = "clients.pickle"

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logger = logging.getLogger()

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logging.captureWarnings(True) # Show warnings via the logging system

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syslogger = None

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try:

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facility=logging.handlers.SysLogHandler.LOG_DAEMON,

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address="/dev/log"))

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syslogger.setFormatter(logging.Formatter

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

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' %(message)s'))

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

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" %(message)s"))

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logger.addHandler(syslogger)

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if debug:

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console = logging.StreamHandler()

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

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' [%(process)d]:'

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' %(levelname)s:'

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' %(message)s'))

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

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" [%(process)d]:"

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" %(levelname)s:"

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" %(message)s"))

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logger.addHandler(console)

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logger.setLevel(level)

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output = subprocess.check_output(["gpgconf"])

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for line in output.splitlines():

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name, text, path = line.split(b":")

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if name == "gpg":

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if name == b"gpg":

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self.gpg = path

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break

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except OSError as e:

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if e.errno != errno.ENOENT:

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raise

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self.gnupgargs = ['--batch',

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'--homedir', self.tempdir,

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'--force-mdc',

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'--quiet']

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self.gnupgargs = ["--batch",

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"--homedir", self.tempdir,

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"--force-mdc",

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"--quiet"]

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# Only GPG version 1 has the --no-use-agent option.

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if self.gpg == "gpg" or self.gpg.endswith("/gpg"):

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if self.gpg == b"gpg" or self.gpg.endswith(b"/gpg"):

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self.gnupgargs.append("--no-use-agent")

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def __enter__(self):

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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proc = subprocess.Popen([self.gpg, "--symmetric",

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"--passphrase-file",

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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dir=self.tempdir) as passfile:

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passfile.write(passphrase)

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passfile.flush()

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

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'--passphrase-file',

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proc = subprocess.Popen([self.gpg, "--decrypt",

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"--passphrase-file",

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passfile.name]

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+ self.gnupgargs,

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stdin=subprocess.PIPE,

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Attributes:

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interface: integer; avahi.IF_UNSPEC or an interface index.

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Used to optionally bind to the specified interface.

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name: string; Example: 'Mandos'

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

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name: string; Example: "Mandos"

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

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

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port: integer; what port to announce

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TXT: list of strings; TXT record for the service

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avahi.DBUS_INTERFACE_ENTRY_GROUP)

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self.entry_group_state_changed_match = (

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self.group.connect_to_signal(

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'StateChanged', self.entry_group_state_changed))

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"StateChanged", self.entry_group_state_changed))

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

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self.name, self.type)

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self.group.AddService(

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class AvahiServiceToSyslog(AvahiService):

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

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

505

ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)

527

ret = super(AvahiServiceToSyslog, self).rename(*args,

528

**kwargs)

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529

syslogger.setFormatter(logging.Formatter(

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

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"Mandos ({}) [%(process)d]: %(levelname)s: %(message)s"

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531

.format(self.name)))

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return ret

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540

563

OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h

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542

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# Types

543

class session_int(ctypes.Structure):

566

class _session_int(ctypes.Structure):

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_fields_ = []

545

session_t = ctypes.POINTER(session_int)

568

session_t = ctypes.POINTER(_session_int)

546

569

547

570

class certificate_credentials_st(ctypes.Structure):

548

571

_fields_ = []

551

574

certificate_type_t = ctypes.c_int

552

575

553

576

class datum_t(ctypes.Structure):

554

_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),

555

('size', ctypes.c_uint)]

577

_fields_ = [("data", ctypes.POINTER(ctypes.c_ubyte)),

578

("size", ctypes.c_uint)]

556

579

557

class openpgp_crt_int(ctypes.Structure):

580

class _openpgp_crt_int(ctypes.Structure):

558

581

_fields_ = []

559

openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)

582

openpgp_crt_t = ctypes.POINTER(_openpgp_crt_int)

560

583

openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h

561

584

log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)

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credentials_type_t = ctypes.c_int

571

594

# gnutls.strerror()

572

595

self.code = code

573

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if message is None and code is not None:

574

message = gnutls.strerror(code)

597

message = gnutls.strerror(code).decode(

598

"utf-8", errors="replace")

575

599

return super(gnutls.Error, self).__init__(

576

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message, *args)

577

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578

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class CertificateSecurityError(Error):

579

603

pass

580

604

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class PointerTo:

606

def __init__(self, cls):

607

self.cls = cls

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609

def from_param(self, obj):

610

if not isinstance(obj, self.cls):

611

raise TypeError("Not of type {}: {!r}"

612

.format(self.cls.__name__, obj))

613

return ctypes.byref(obj.from_param(obj))

614

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class CastToVoidPointer:

616

def __init__(self, cls):

617

self.cls = cls

618

619

def from_param(self, obj):

620

if not isinstance(obj, self.cls):

621

raise TypeError("Not of type {}: {!r}"

622

.format(self.cls.__name__, obj))

623

return ctypes.cast(obj.from_param(obj), ctypes.c_void_p)

624

625

class With_from_param:

626

@classmethod

627

def from_param(cls, obj):

628

return obj._as_parameter_

629

581

630

# Classes

582

class Credentials:

631

class Credentials(With_from_param):

583

632

def __init__(self):

584

self._c_object = gnutls.certificate_credentials_t()

585

gnutls.certificate_allocate_credentials(

586

ctypes.byref(self._c_object))

633

self._as_parameter_ = gnutls.certificate_credentials_t()

634

gnutls.certificate_allocate_credentials(self)

587

635

self.type = gnutls.CRD_CERTIFICATE

588

636

589

637

def __del__(self):

590

gnutls.certificate_free_credentials(self._c_object)

638

gnutls.certificate_free_credentials(self)

591

639

592

class ClientSession:

640

class ClientSession(With_from_param):

593

641

def __init__(self, socket, credentials=None):

594

self._c_object = gnutls.session_t()

642

self._as_parameter_ = gnutls.session_t()

595

643

gnutls_flags = gnutls.CLIENT

596

644

if gnutls.check_version(b"3.5.6"):

597

645

gnutls_flags |= gnutls.NO_TICKETS

598

646

if gnutls.has_rawpk:

599

647

gnutls_flags |= gnutls.ENABLE_RAWPK

600

gnutls.init(ctypes.byref(self._c_object), gnutls_flags)

648

gnutls.init(self, gnutls_flags)

601

649

del gnutls_flags

602

gnutls.set_default_priority(self._c_object)

603

gnutls.transport_set_ptr(self._c_object, socket.fileno())

604

gnutls.handshake_set_private_extensions(self._c_object,

605

True)

650

gnutls.set_default_priority(self)

651

gnutls.transport_set_ptr(self, socket.fileno())

652

gnutls.handshake_set_private_extensions(self, True)

606

653

self.socket = socket

607

654

if credentials is None:

608

655

credentials = gnutls.Credentials()

609

gnutls.credentials_set(self._c_object, credentials.type,

610

ctypes.cast(credentials._c_object,

611

ctypes.c_void_p))

656

gnutls.credentials_set(self, credentials.type,

657

credentials)

612

658

self.credentials = credentials

613

659

614

660

def __del__(self):

615

gnutls.deinit(self._c_object)

661

gnutls.deinit(self)

616

662

617

663

def handshake(self):

618

return gnutls.handshake(self._c_object)

664

return gnutls.handshake(self)

619

665

620

666

def send(self, data):

621

667

data = bytes(data)

622

668

data_len = len(data)

623

669

while data_len > 0:

624

data_len -= gnutls.record_send(self._c_object,

625

data[-data_len:],

670

data_len -= gnutls.record_send(self, data[-data_len:],

626

671

data_len)

627

672

628

673

def bye(self):

629

return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)

674

return gnutls.bye(self, gnutls.SHUT_RDWR)

630

675

631

676

# Error handling functions

632

677

def _error_code(result):

633

678

"""A function to raise exceptions on errors, suitable

634

for the 'restype' attribute on ctypes functions"""

635

if result >= 0:

679

for the "restype" attribute on ctypes functions"""

680

if result >= gnutls.E_SUCCESS:

636

681

return result

637

682

if result == gnutls.E_NO_CERTIFICATE_FOUND:

638

683

raise gnutls.CertificateSecurityError(code=result)

639

684

raise gnutls.Error(code=result)

640

685

641

def _retry_on_error(result, func, arguments):

686

def _retry_on_error(result, func, arguments,

687

_error_code=_error_code):

642

688

"""A function to retry on some errors, suitable

643

for the 'errcheck' attribute on ctypes functions"""

644

while result < 0:

689

for the "errcheck" attribute on ctypes functions"""

690

while result < gnutls.E_SUCCESS:

645

691

if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):

646

692

return _error_code(result)

647

693

result = func(*arguments)

652

698

653

699

# Functions

654

700

priority_set_direct = _library.gnutls_priority_set_direct

655

priority_set_direct.argtypes = [session_t, ctypes.c_char_p,

701

priority_set_direct.argtypes = [ClientSession, ctypes.c_char_p,

656

702

ctypes.POINTER(ctypes.c_char_p)]

657

703

priority_set_direct.restype = _error_code

658

704

659

705

init = _library.gnutls_init

660

init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]

706

init.argtypes = [PointerTo(ClientSession), ctypes.c_int]

661

707

init.restype = _error_code

662

708

663

709

set_default_priority = _library.gnutls_set_default_priority

664

set_default_priority.argtypes = [session_t]

710

set_default_priority.argtypes = [ClientSession]

665

711

set_default_priority.restype = _error_code

666

712

667

713

record_send = _library.gnutls_record_send

668

record_send.argtypes = [session_t, ctypes.c_void_p,

714

record_send.argtypes = [ClientSession, ctypes.c_void_p,

669

715

ctypes.c_size_t]

670

716

record_send.restype = ctypes.c_ssize_t

671

717

record_send.errcheck = _retry_on_error

673

719

certificate_allocate_credentials = (

674

720

_library.gnutls_certificate_allocate_credentials)

675

721

certificate_allocate_credentials.argtypes = [

676

ctypes.POINTER(certificate_credentials_t)]

722

PointerTo(Credentials)]

677

723

certificate_allocate_credentials.restype = _error_code

678

724

679

725

certificate_free_credentials = (

680

726

_library.gnutls_certificate_free_credentials)

681

certificate_free_credentials.argtypes = [

682

certificate_credentials_t]

727

certificate_free_credentials.argtypes = [Credentials]

683

728

certificate_free_credentials.restype = None

684

729

685

730

handshake_set_private_extensions = (

686

731

_library.gnutls_handshake_set_private_extensions)

687

handshake_set_private_extensions.argtypes = [session_t,

732

handshake_set_private_extensions.argtypes = [ClientSession,

688

733

ctypes.c_int]

689

734

handshake_set_private_extensions.restype = None

690

735

691

736

credentials_set = _library.gnutls_credentials_set

692

credentials_set.argtypes = [session_t, credentials_type_t,

693

ctypes.c_void_p]

737

credentials_set.argtypes = [ClientSession, credentials_type_t,

738

CastToVoidPointer(Credentials)]

694

739

credentials_set.restype = _error_code

695

740

696

741

strerror = _library.gnutls_strerror

698

743

strerror.restype = ctypes.c_char_p

699

744

700

745

certificate_type_get = _library.gnutls_certificate_type_get

701

certificate_type_get.argtypes = [session_t]

746

certificate_type_get.argtypes = [ClientSession]

702

747

certificate_type_get.restype = _error_code

703

748

704

749

certificate_get_peers = _library.gnutls_certificate_get_peers

705

certificate_get_peers.argtypes = [session_t,

750

certificate_get_peers.argtypes = [ClientSession,

706

751

ctypes.POINTER(ctypes.c_uint)]

707

752

certificate_get_peers.restype = ctypes.POINTER(datum_t)

708

753

715

760

global_set_log_function.restype = None

716

761

717

762

deinit = _library.gnutls_deinit

718

deinit.argtypes = [session_t]

763

deinit.argtypes = [ClientSession]

719

764

deinit.restype = None

720

765

721

766

handshake = _library.gnutls_handshake

722

handshake.argtypes = [session_t]

723

handshake.restype = _error_code

767

handshake.argtypes = [ClientSession]

768

handshake.restype = ctypes.c_int

724

769

handshake.errcheck = _retry_on_error

725

770

726

771

transport_set_ptr = _library.gnutls_transport_set_ptr

727

transport_set_ptr.argtypes = [session_t, transport_ptr_t]

772

transport_set_ptr.argtypes = [ClientSession, transport_ptr_t]

728

773

transport_set_ptr.restype = None

729

774

730

775

bye = _library.gnutls_bye

731

bye.argtypes = [session_t, close_request_t]

732

bye.restype = _error_code

776

bye.argtypes = [ClientSession, close_request_t]

777

bye.restype = ctypes.c_int

733

778

bye.errcheck = _retry_on_error

734

779

735

780

check_version = _library.gnutls_check_version

752

797

753

798

x509_crt_fmt_t = ctypes.c_int

754

799

755

# All the function declarations below are from gnutls/abstract.h

800

# All the function declarations below are from

801

# gnutls/abstract.h

756

802

pubkey_init = _library.gnutls_pubkey_init

757

803

pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]

758

804

pubkey_init.restype = _error_code

772

818

pubkey_deinit.argtypes = [pubkey_t]

773

819

pubkey_deinit.restype = None

774

820

else:

775

# All the function declarations below are from gnutls/openpgp.h

821

# All the function declarations below are from

822

# gnutls/openpgp.h

776

823

777

824

openpgp_crt_init = _library.gnutls_openpgp_crt_init

778

825

openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]

784

831

openpgp_crt_fmt_t]

785

832

openpgp_crt_import.restype = _error_code

786

833

787

openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self

788

openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,

789

ctypes.POINTER(ctypes.c_uint)]

834

openpgp_crt_verify_self = \

835

_library.gnutls_openpgp_crt_verify_self

836

openpgp_crt_verify_self.argtypes = [

837

openpgp_crt_t,

838

ctypes.c_uint,

839

ctypes.POINTER(ctypes.c_uint),

840

]

790

841

openpgp_crt_verify_self.restype = _error_code

791

842

792

843

openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit

803

854

804

855

if check_version(b"3.6.4"):

805

856

certificate_type_get2 = _library.gnutls_certificate_type_get2

806

certificate_type_get2.argtypes = [session_t, ctypes.c_int]

857

certificate_type_get2.argtypes = [ClientSession, ctypes.c_int]

807

858

certificate_type_get2.restype = _error_code

808

859

809

860

# Remove non-public functions

825

876

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

826

877

827

878

Attributes:

828

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

879

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

829

880

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

830

881

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

831

882

checker: multiprocessing.Process(); a running checker process used

832

to see if the client lives. 'None' if no process is

883

to see if the client lives. None if no process is

833

884

running.

834

885

checker_callback_tag: a GLib event source tag, or None

835

886

checker_command: string; External command which is run to check

1030

1081

if self.checker_initiator_tag is not None:

1031

1082

GLib.source_remove(self.checker_initiator_tag)

1032

1083

self.checker_initiator_tag = GLib.timeout_add(

1033

int(self.interval.total_seconds() * 1000),

1084

random.randrange(int(self.interval.total_seconds() * 1000

1085

+ 1)),

1034

1086

self.start_checker)

1035

1087

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

1036

1088

if self.disable_initiator_tag is not None:

1046

1098

# Read return code from connection (see call_pipe)

1047

1099

returncode = connection.recv()

1048

1100

connection.close()

1049

self.checker.join()

1101

if self.checker is not None:

1102

self.checker.join()

1050

1103

self.checker_callback_tag = None

1051

1104

self.checker = None

1052

1105

1110

1163

if self.checker is None:

1111

1164

# Escape attributes for the shell

1112

1165

escaped_attrs = {

1113

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

1166

attr: shlex.quote(str(getattr(self, attr)))

1114

1167

for attr in self.runtime_expansions}

1115

1168

try:

1116

1169

command = self.checker_command % escaped_attrs

1143

1196

kwargs=popen_args)

1144

1197

self.checker.start()

1145

1198

self.checker_callback_tag = GLib.io_add_watch(

1146

pipe[0].fileno(), GLib.IO_IN,

1199

GLib.IOChannel.unix_new(pipe[0].fileno()),

1200

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

1147

1201

self.checker_callback, pipe[0], command)

1148

1202

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

1149

1203

return True

1188

1242

func._dbus_name = func.__name__

1189

1243

if func._dbus_name.endswith("_dbus_property"):

1190

1244

func._dbus_name = func._dbus_name[:-14]

1191

func._dbus_get_args_options = {'byte_arrays': byte_arrays}

1245

func._dbus_get_args_options = {"byte_arrays": byte_arrays}

1192

1246

return func

1193

1247

1194

1248

return decorator

1283

1337

1284

1338

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1285

1339

out_signature="s",

1286

path_keyword='object_path',

1287

connection_keyword='connection')

1340

path_keyword="object_path",

1341

connection_keyword="connection")

1288

1342

def Introspect(self, object_path, connection):

1289

1343

"""Overloading of standard D-Bus method.

1290

1344

1404

1458

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

1405

1459

"'ay' signature {!r}"

1406

1460

.format(prop._dbus_signature))

1407

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

1408

for byte in value))

1461

value = dbus.ByteArray(bytes(value))

1409

1462

prop(value)

1410

1463

1411

1464

@dbus.service.method(dbus.PROPERTIES_IFACE,

1444

1497

1445

1498

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1446

1499

out_signature="s",

1447

path_keyword='object_path',

1448

connection_keyword='connection')

1500

path_keyword="object_path",

1501

connection_keyword="connection")

1449

1502

def Introspect(self, object_path, connection):

1450

1503

"""Overloading of standard D-Bus method.

1451

1504

1546

1599

1547

1600

@dbus.service.method(dbus.INTROSPECTABLE_IFACE,

1548

1601

out_signature="s",

1549

path_keyword='object_path',

1550

connection_keyword='connection')

1602

path_keyword="object_path",

1603

connection_keyword="connection")

1551

1604

def Introspect(self, object_path, connection):

1552

1605

"""Overloading of standard D-Bus method.

1553

1606

2219

2272

class ProxyClient:

2220

2273

def __init__(self, child_pipe, key_id, fpr, address):

2221

2274

self._pipe = child_pipe

2222

self._pipe.send(('init', key_id, fpr, address))

2275

self._pipe.send(("init", key_id, fpr, address))

2223

2276

if not self._pipe.recv():

2224

2277

raise KeyError(key_id or fpr)

2225

2278

2226

2279

def __getattribute__(self, name):

2227

if name == '_pipe':

2280

if name == "_pipe":

2228

2281

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

2229

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

2282

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

2230

2283

data = self._pipe.recv()

2231

if data[0] == 'data':

2284

if data[0] == "data":

2232

2285

return data[1]

2233

if data[0] == 'function':

2286

if data[0] == "function":

2234

2287

2235

2288

def func(*args, **kwargs):

2236

self._pipe.send(('funcall', name, args, kwargs))

2289

self._pipe.send(("funcall", name, args, kwargs))

2237

2290

return self._pipe.recv()[1]

2238

2291

2239

2292

return func

2240

2293

2241

2294

def __setattr__(self, name, value):

2242

if name == '_pipe':

2295

if name == "_pipe":

2243

2296

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

2244

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

2297

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

2245

2298

2246

2299

2247

2300

class ClientHandler(socketserver.BaseRequestHandler, object):

2259

2312

2260

2313

session = gnutls.ClientSession(self.request)

2261

2314

2262

# priority = ':'.join(("NONE", "+VERS-TLS1.1",

2315

# priority = ":".join(("NONE", "+VERS-TLS1.1",

2263

2316

# "+AES-256-CBC", "+SHA1",

2264

2317

# "+COMP-NULL", "+CTYPE-OPENPGP",

2265

2318

# "+DHE-DSS"))

2267

2320

priority = self.server.gnutls_priority

2268

2321

if priority is None:

2269

2322

priority = "NORMAL"

2270

gnutls.priority_set_direct(session._c_object,

2271

priority.encode("utf-8"),

2272

None)

2323

gnutls.priority_set_direct(session,

2324

priority.encode("utf-8"), None)

2273

2325

2274

2326

# Start communication using the Mandos protocol

2275

2327

# Get protocol number

2302

2354

except (TypeError, gnutls.Error) as error:

2303

2355

logger.warning("Bad certificate: %s", error)

2304

2356

return

2305

logger.debug("Key ID: %s", key_id)

2357

logger.debug("Key ID: %s",

2358

key_id.decode("utf-8",

2359

errors="replace"))

2306

2360

2307

2361

else:

2308

2362

key_id = b""

2400

2454

def peer_certificate(session):

2401

2455

"Return the peer's certificate as a bytestring"

2402

2456

try:

2403

cert_type = gnutls.certificate_type_get2(session._c_object,

2404

gnutls.CTYPE_PEERS)

2457

cert_type = gnutls.certificate_type_get2(

2458

session, gnutls.CTYPE_PEERS)

2405

2459

except AttributeError:

2406

cert_type = gnutls.certificate_type_get(session._c_object)

2460

cert_type = gnutls.certificate_type_get(session)

2407

2461

if gnutls.has_rawpk:

2408

2462

valid_cert_types = frozenset((gnutls.CRT_RAWPK,))

2409

2463

else:

2416

2470

return b""

2417

2471

list_size = ctypes.c_uint(1)

2418

2472

cert_list = (gnutls.certificate_get_peers

2419

(session._c_object, ctypes.byref(list_size)))

2473

(session, ctypes.byref(list_size)))

2420

2474

if not bool(cert_list) and list_size.value != 0:

2421

2475

raise gnutls.Error("error getting peer certificate")

2422

2476

if list_size.value == 0:

2444

2498

buf = ctypes.create_string_buffer(32)

2445

2499

buf_len = ctypes.c_size_t(len(buf))

2446

2500

# Get the key ID from the raw public key into the buffer

2447

gnutls.pubkey_get_key_id(pubkey,

2448

gnutls.KEYID_USE_SHA256,

2449

ctypes.cast(ctypes.byref(buf),

2450

ctypes.POINTER(ctypes.c_ubyte)),

2451

ctypes.byref(buf_len))

2501

gnutls.pubkey_get_key_id(

2502

pubkey,

2503

gnutls.KEYID_USE_SHA256,

2504

ctypes.cast(ctypes.byref(buf),

2505

ctypes.POINTER(ctypes.c_ubyte)),

2506

ctypes.byref(buf_len))

2452

2507

# Deinit the certificate

2453

2508

gnutls.pubkey_deinit(pubkey)

2454

2509

2535

2590

2536

2591

class IPv6_TCPServer(MultiprocessingMixInWithPipe,

2537

2592

socketserver.TCPServer):

2538

"""IPv6-capable TCP server. Accepts 'None' as address and/or port

2593

"""IPv6-capable TCP server. Accepts None as address and/or port

2539

2594

2540

2595

Attributes:

2541

2596

enabled: Boolean; whether this server is activated yet

2673

2728

def add_pipe(self, parent_pipe, proc):

2674

2729

# Call "handle_ipc" for both data and EOF events

2675

2730

GLib.io_add_watch(

2676

parent_pipe.fileno(),

2677

GLib.IO_IN | GLib.IO_HUP,

2731

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2732

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2678

2733

functools.partial(self.handle_ipc,

2679

2734

parent_pipe=parent_pipe,

2680

2735

proc=proc))

2693

2748

request = parent_pipe.recv()

2694

2749

command = request[0]

2695

2750

2696

if command == 'init':

2751

if command == "init":

2697

2752

key_id = request[1].decode("ascii")

2698

2753

fpr = request[2].decode("ascii")

2699

2754

address = request[3]

2700

2755

2701

2756

for c in self.clients.values():

2702

if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":

2757

if key_id == ("E3B0C44298FC1C149AFBF4C8996FB924"

2758

"27AE41E4649B934CA495991B7852B855"):

2703

2759

continue

2704

2760

if key_id and c.key_id == key_id:

2705

2761

client = c

2718

2774

return False

2719

2775

2720

2776

GLib.io_add_watch(

2721

parent_pipe.fileno(),

2722

GLib.IO_IN | GLib.IO_HUP,

2777

GLib.IOChannel.unix_new(parent_pipe.fileno()),

2778

GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,

2723

2779

functools.partial(self.handle_ipc,

2724

2780

parent_pipe=parent_pipe,

2725

2781

proc=proc,

2728

2784

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

2729

2785

# same fileno

2730

2786

return False

2731

if command == 'funcall':

2787

if command == "funcall":

2732

2788

funcname = request[1]

2733

2789

args = request[2]

2734

2790

kwargs = request[3]

2735

2791

2736

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

2792

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

2737

2793

funcname)(*args,

2738

2794

**kwargs)))

2739

2795

2740

if command == 'getattr':

2796

if command == "getattr":

2741

2797

attrname = request[1]

2742

2798

if isinstance(client_object.__getattribute__(attrname),

2743

collections.Callable):

2744

parent_pipe.send(('function', ))

2799

collections.abc.Callable):

2800

parent_pipe.send(("function", ))

2745

2801

else:

2746

2802

parent_pipe.send((

2747

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

2803

"data", client_object.__getattribute__(attrname)))

2748

2804

2749

if command == 'setattr':

2805

if command == "setattr":

2750

2806

attrname = request[1]

2751

2807

value = request[2]

2752

2808

setattr(client_object, attrname, value)

2757

2813

def rfc3339_duration_to_delta(duration):

2758

2814

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

2759

2815

2760

>>> rfc3339_duration_to_delta("P7D")

2761

datetime.timedelta(7)

2762

>>> rfc3339_duration_to_delta("PT60S")

2763

datetime.timedelta(0, 60)

2764

>>> rfc3339_duration_to_delta("PT60M")

2765

datetime.timedelta(0, 3600)

2766

>>> rfc3339_duration_to_delta("PT24H")

2767

datetime.timedelta(1)

2768

>>> rfc3339_duration_to_delta("P1W")

2769

datetime.timedelta(7)

2770

>>> rfc3339_duration_to_delta("PT5M30S")

2771

datetime.timedelta(0, 330)

2772

>>> rfc3339_duration_to_delta("P1DT3M20S")

2773

datetime.timedelta(1, 200)

2816

>>> timedelta = datetime.timedelta

2817

>>> rfc3339_duration_to_delta("P7D") == timedelta(7)

2818

True

2819

>>> rfc3339_duration_to_delta("PT60S") == timedelta(0, 60)

2820

True

2821

>>> rfc3339_duration_to_delta("PT60M") == timedelta(0, 3600)

2822

True

2823

>>> rfc3339_duration_to_delta("PT24H") == timedelta(1)

2824

True

2825

>>> rfc3339_duration_to_delta("P1W") == timedelta(7)

2826

True

2827

>>> rfc3339_duration_to_delta("PT5M30S") == timedelta(0, 330)

2828

True

2829

>>> rfc3339_duration_to_delta("P1DT3M20S") == timedelta(1, 200)

2830

True

2831

>>> del timedelta

2774

2832

"""

2775

2833

2776

2834

# Parsing an RFC 3339 duration with regular expressions is not

2856

2914

def string_to_delta(interval):

2857

2915

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

2858

2916

2859

>>> string_to_delta('7d')

2860

datetime.timedelta(7)

2861

>>> string_to_delta('60s')

2862

datetime.timedelta(0, 60)

2863

>>> string_to_delta('60m')

2864

datetime.timedelta(0, 3600)

2865

>>> string_to_delta('24h')

2866

datetime.timedelta(1)

2867

>>> string_to_delta('1w')

2868

datetime.timedelta(7)

2869

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

2870

datetime.timedelta(0, 330)

2917

>>> string_to_delta("7d") == datetime.timedelta(7)

2918

True

2919

>>> string_to_delta("60s") == datetime.timedelta(0, 60)

2920

True

2921

>>> string_to_delta("60m") == datetime.timedelta(0, 3600)

2922

True

2923

>>> string_to_delta("24h") == datetime.timedelta(1)

2924

True

2925

>>> string_to_delta("1w") == datetime.timedelta(7)

2926

True

2927

>>> string_to_delta("5m 30s") == datetime.timedelta(0, 330)

2928

True

2871

2929

"""

2872

2930

2873

2931

try:

2975

3033

2976

3034

options = parser.parse_args()

2977

3035

2978

if options.check:

2979

import doctest

2980

fail_count, test_count = doctest.testmod()

2981

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

2982

2983

3036

# Default values for config file for server-global settings

2984

3037

if gnutls.has_rawpk:

2985

3038

priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"

3081

3134

3082

3135

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

3083

3136

syslogger.setFormatter(

3084

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

3085

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

3137

logging.Formatter("Mandos ({}) [%(process)d]:"

3138

" %(levelname)s: %(message)s".format(

3086

3139

server_settings["servicename"])))

3087

3140

3088

3141

# Parse config file with clients

3148

3201

3149

3202

@gnutls.log_func

3150

3203

def debug_gnutls(level, string):

3151

logger.debug("GnuTLS: %s", string[:-1])

3204

logger.debug("GnuTLS: %s",

3205

string[:-1].decode("utf-8",

3206

errors="replace"))

3152

3207

3153

3208

gnutls.global_set_log_function(debug_gnutls)

3154

3209

3248

3303

if isinstance(s, bytes)

3249

3304

else s) for s in

3250

3305

value["client_structure"]]

3251

# .name & .host

3252

for k in ("name", "host"):

3306

# .name, .host, and .checker_command

3307

for k in ("name", "host", "checker_command"):

3253

3308

if isinstance(value[k], bytes):

3254

3309

value[k] = value[k].decode("utf-8")

3255

3310

if "key_id" not in value:

3265

3320

for key, value in

3266

3321

bytes_old_client_settings.items()}

3267

3322

del bytes_old_client_settings

3268

# .host

3323

# .host and .checker_command

3269

3324

for value in old_client_settings.values():

3270

if isinstance(value["host"], bytes):

3271

value["host"] = (value["host"]

3272

.decode("utf-8"))

3325

for attribute in ("host", "checker_command"):

3326

if isinstance(value[attribute], bytes):

3327

value[attribute] = (value[attribute]

3328

.decode("utf-8"))

3273

3329

os.remove(stored_state_path)

3274

3330

except IOError as e:

3275

3331

if e.errno == errno.ENOENT:

3528

3584

3529

3585

try:

3530

3586

with tempfile.NamedTemporaryFile(

3531

mode='wb',

3587

mode="wb",

3532

3588

suffix=".pickle",

3533

prefix='clients-',

3589

prefix="clients-",

3534

3590

dir=os.path.dirname(stored_state_path),

3535

3591

delete=False) as stored_state:

3536

3592

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

3600

3656

sys.exit(1)

3601

3657

# End of Avahi example code

3602

3658

3603

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

3604

lambda *args, **kwargs:

3605

(tcp_server.handle_request

3606

(*args[2:], **kwargs) or True))

3659

GLib.io_add_watch(

3660

GLib.IOChannel.unix_new(tcp_server.fileno()),

3661

GLib.PRIORITY_DEFAULT, GLib.IO_IN,

3662

lambda *args, **kwargs: (tcp_server.handle_request

3663

(*args[2:], **kwargs) or True))

3607

3664

3608

3665

logger.debug("Starting main loop")

3609

3666

main_loop.run()

3619

3676

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

3620

3677

cleanup()

3621

3678

3622

3623

if __name__ == '__main__':

3624

main()

3679

3680

def should_only_run_tests():

3681

parser = argparse.ArgumentParser(add_help=False)

3682

parser.add_argument("--check", action="store_true")

3683

args, unknown_args = parser.parse_known_args()

3684

run_tests = args.check

3685

if run_tests:

3686

# Remove --check argument from sys.argv

3687

sys.argv[1:] = unknown_args

3688

return run_tests

3689

3690

# Add all tests from doctest strings

3691

def load_tests(loader, tests, none):

3692

import doctest

3693

tests.addTests(doctest.DocTestSuite())

3694

return tests

3695

3696

if __name__ == "__main__":

3697

try:

3698

if should_only_run_tests():

3699

# Call using ./mandos --check [--verbose]

3700

unittest.main()

3701

else:

3702

main()

3703

finally:

3704

logging.shutdown()