2
# -*- 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 -*-
2
# -*- mode: python; coding: utf-8 -*-
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4
# Mandos server - give out binary blobs to connecting clients.
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6
# This program is partly derived from an example program for an Avahi
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7
# service publisher, downloaded from
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8
# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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9
# methods "add", "remove", "server_state_changed",
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# "entry_group_state_changed", "cleanup", and "activate" in the
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11
# "AvahiService" class, and some lines in "main".
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13
# Everything else is
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# Copyright © 2008-2019 Teddy Hogeborn
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# Copyright © 2008-2019 Björn Påhlsson
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# This file is part of Mandos.
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# Mandos is free software: you can redistribute it and/or modify it
20
# under the terms of the GNU General Public License as published by
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# Copyright © 2008-2016 Teddy Hogeborn
15
# Copyright © 2008-2016 Björn Påhlsson
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
21
19
# the Free Software Foundation, either version 3 of the License, or
22
20
# (at your option) any later version.
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# Mandos is distributed in the hope that it will be useful, but
25
# WITHOUT ANY WARRANTY; without even the implied warranty of
22
# This program is distributed in the hope that it will be useful,
23
# but WITHOUT ANY WARRANTY; without even the implied warranty of
26
24
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27
25
# GNU General Public License for more details.
29
27
# You should have received a copy of the GNU General Public License
30
# along with Mandos. If not, see <http://www.gnu.org/licenses/>.
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# along with this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# Contact the authors at <mandos@recompile.se>.
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34
from __future__ import (division, absolute_import, print_function,
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'--passphrase-file',
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248
+ self.gnupgargs,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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ciphertext, err = proc.communicate(input=data)
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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ciphertext, err = proc.communicate(input = data)
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253
if proc.returncode != 0:
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raise PGPError(err)
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return ciphertext
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257
def decrypt(self, data, password):
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passphrase = self.password_encode(password)
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with tempfile.NamedTemporaryFile(
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dir=self.tempdir) as passfile:
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dir = self.tempdir) as passfile:
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passfile.write(passphrase)
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proc = subprocess.Popen([self.gpg, '--decrypt',
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264
'--passphrase-file',
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266
+ self.gnupgargs,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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decrypted_plaintext, err = proc.communicate(input=data)
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stdin = subprocess.PIPE,
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stdout = subprocess.PIPE,
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stderr = subprocess.PIPE)
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decrypted_plaintext, err = proc.communicate(input = data)
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if proc.returncode != 0:
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raise PGPError(err)
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return decrypted_plaintext
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# Pretend that we have an Avahi module
293
"""This isn't so much a class as it is a module-like namespace."""
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IF_UNSPEC = -1 # avahi-common/address.h
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PROTO_UNSPEC = -1 # avahi-common/address.h
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PROTO_INET = 0 # avahi-common/address.h
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PROTO_INET6 = 1 # avahi-common/address.h
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"""This isn't so much a class as it is a module-like namespace.
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It is instantiated once, and simulates having an Avahi module."""
279
IF_UNSPEC = -1 # avahi-common/address.h
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PROTO_UNSPEC = -1 # avahi-common/address.h
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PROTO_INET = 0 # avahi-common/address.h
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PROTO_INET6 = 1 # avahi-common/address.h
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283
DBUS_NAME = "org.freedesktop.Avahi"
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DBUS_INTERFACE_ENTRY_GROUP = DBUS_NAME + ".EntryGroup"
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DBUS_INTERFACE_SERVER = DBUS_NAME + ".Server"
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DBUS_PATH_SERVER = "/"
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def string_array_to_txt_array(t):
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def string_array_to_txt_array(self, t):
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return dbus.Array((dbus.ByteArray(s.encode("utf-8"))
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for s in t), signature="ay")
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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
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SERVER_INVALID = 0 # avahi-common/defs.h
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SERVER_REGISTERING = 1 # avahi-common/defs.h
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SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
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SERVER_FAILURE = 4 # avahi-common/defs.h
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ENTRY_GROUP_ESTABLISHED = 2 # avahi-common/defs.h
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ENTRY_GROUP_COLLISION = 3 # avahi-common/defs.h
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ENTRY_GROUP_FAILURE = 4 # avahi-common/defs.h
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SERVER_INVALID = 0 # avahi-common/defs.h
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SERVER_REGISTERING = 1 # avahi-common/defs.h
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SERVER_RUNNING = 2 # avahi-common/defs.h
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SERVER_COLLISION = 3 # avahi-common/defs.h
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SERVER_FAILURE = 4 # avahi-common/defs.h
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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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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"""
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ret = super(AvahiServiceToSyslog, self).rename(*args, **kwargs)
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ret = AvahiService.rename(self, *args, **kwargs)
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syslogger.setFormatter(logging.Formatter(
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'Mandos ({}) [%(process)d]: %(levelname)s: %(message)s'
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.format(self.name)))
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# Pretend that we have a GnuTLS module
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"""This isn't so much a class as it is a module-like namespace."""
523
library = ctypes.util.find_library("gnutls")
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library = ctypes.util.find_library("gnutls-deb0")
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_library = ctypes.cdll.LoadLibrary(library)
502
class GnuTLS(object):
503
"""This isn't so much a class as it is a module-like namespace.
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It is instantiated once, and simulates having a GnuTLS module."""
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_library = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("gnutls"))
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_need_version = b"3.3.0"
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# Need to use class name "GnuTLS" here, since this method is
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# called before the assignment to the "gnutls" global variable
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if GnuTLS.check_version(self._need_version) is None:
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raise GnuTLS.Error("Needs GnuTLS {} or later"
515
.format(self._need_version))
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# Unless otherwise indicated, the constants and types below are
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# all from the gnutls/gnutls.h C header file.
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E_INTERRUPTED = -52
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CRD_CERTIFICATE = 1
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E_NO_CERTIFICATE_FOUND = -49
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KEYID_USE_SHA256 = 1 # gnutls/x509.h
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529
OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
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532
class session_int(ctypes.Structure):
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534
session_t = ctypes.POINTER(session_int)
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class certificate_credentials_st(ctypes.Structure):
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certificate_credentials_t = ctypes.POINTER(
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538
certificate_credentials_st)
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certificate_type_t = ctypes.c_int
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540
class datum_t(ctypes.Structure):
561
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_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
562
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('size', ctypes.c_uint)]
564
543
class openpgp_crt_int(ctypes.Structure):
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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
567
openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
568
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log_func = ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_char_p)
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credentials_type_t = ctypes.c_int
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549
transport_ptr_t = ctypes.c_void_p
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close_request_t = ctypes.c_int
574
553
class Error(Exception):
575
def __init__(self, message=None, code=None, args=()):
554
# We need to use the class name "GnuTLS" here, since this
555
# exception might be raised from within GnuTLS.__init__,
556
# which is called before the assignment to the "gnutls"
557
# global variable has happened.
558
def __init__(self, message = None, code = None, args=()):
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559
# Default usage is by a message string, but if a return
577
560
# code is passed, convert it to a string with
578
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# gnutls.strerror()
580
563
if message is None and code is not None:
581
message = gnutls.strerror(code)
582
return super(gnutls.Error, self).__init__(
564
message = GnuTLS.strerror(code)
565
return super(GnuTLS.Error, self).__init__(
585
568
class CertificateSecurityError(Error):
572
class Credentials(object):
590
573
def __init__(self):
591
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self._c_object = gnutls.certificate_credentials_t()
592
575
gnutls.certificate_allocate_credentials(
593
576
ctypes.byref(self._c_object))
594
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self.type = gnutls.CRD_CERTIFICATE
596
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def __del__(self):
597
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gnutls.certificate_free_credentials(self._c_object)
600
def __init__(self, socket, credentials=None):
582
class ClientSession(object):
583
def __init__(self, socket, credentials = None):
601
584
self._c_object = gnutls.session_t()
602
gnutls_flags = gnutls.CLIENT
603
if gnutls.check_version(b"3.5.6"):
604
gnutls_flags |= gnutls.NO_TICKETS
606
gnutls_flags |= gnutls.ENABLE_RAWPK
607
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
585
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
609
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gnutls.set_default_priority(self._c_object)
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gnutls.transport_set_ptr(self._c_object, socket.fileno())
611
588
gnutls.handshake_set_private_extensions(self._c_object,
653
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return _error_code(result)
654
631
result = func(*arguments)
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634
# Unless otherwise indicated, the function declarations below are
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# all from the gnutls/gnutls.h C header file.
661
638
priority_set_direct = _library.gnutls_priority_set_direct
662
639
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
663
640
ctypes.POINTER(ctypes.c_char_p)]
664
641
priority_set_direct.restype = _error_code
666
643
init = _library.gnutls_init
667
644
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
668
645
init.restype = _error_code
670
647
set_default_priority = _library.gnutls_set_default_priority
671
648
set_default_priority.argtypes = [session_t]
672
649
set_default_priority.restype = _error_code
674
651
record_send = _library.gnutls_record_send
675
652
record_send.argtypes = [session_t, ctypes.c_void_p,
677
654
record_send.restype = ctypes.c_ssize_t
678
655
record_send.errcheck = _retry_on_error
680
657
certificate_allocate_credentials = (
681
658
_library.gnutls_certificate_allocate_credentials)
682
659
certificate_allocate_credentials.argtypes = [
683
660
ctypes.POINTER(certificate_credentials_t)]
684
661
certificate_allocate_credentials.restype = _error_code
686
663
certificate_free_credentials = (
687
664
_library.gnutls_certificate_free_credentials)
688
certificate_free_credentials.argtypes = [
689
certificate_credentials_t]
665
certificate_free_credentials.argtypes = [certificate_credentials_t]
690
666
certificate_free_credentials.restype = None
692
668
handshake_set_private_extensions = (
693
669
_library.gnutls_handshake_set_private_extensions)
694
670
handshake_set_private_extensions.argtypes = [session_t,
696
672
handshake_set_private_extensions.restype = None
698
674
credentials_set = _library.gnutls_credentials_set
699
675
credentials_set.argtypes = [session_t, credentials_type_t,
701
677
credentials_set.restype = _error_code
703
679
strerror = _library.gnutls_strerror
704
680
strerror.argtypes = [ctypes.c_int]
705
681
strerror.restype = ctypes.c_char_p
707
683
certificate_type_get = _library.gnutls_certificate_type_get
708
684
certificate_type_get.argtypes = [session_t]
709
685
certificate_type_get.restype = _error_code
711
687
certificate_get_peers = _library.gnutls_certificate_get_peers
712
688
certificate_get_peers.argtypes = [session_t,
713
689
ctypes.POINTER(ctypes.c_uint)]
714
690
certificate_get_peers.restype = ctypes.POINTER(datum_t)
716
692
global_set_log_level = _library.gnutls_global_set_log_level
717
693
global_set_log_level.argtypes = [ctypes.c_int]
718
694
global_set_log_level.restype = None
720
696
global_set_log_function = _library.gnutls_global_set_log_function
721
697
global_set_log_function.argtypes = [log_func]
722
698
global_set_log_function.restype = None
724
700
deinit = _library.gnutls_deinit
725
701
deinit.argtypes = [session_t]
726
702
deinit.restype = None
728
704
handshake = _library.gnutls_handshake
729
705
handshake.argtypes = [session_t]
730
706
handshake.restype = _error_code
731
707
handshake.errcheck = _retry_on_error
733
709
transport_set_ptr = _library.gnutls_transport_set_ptr
734
710
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
735
711
transport_set_ptr.restype = None
737
713
bye = _library.gnutls_bye
738
714
bye.argtypes = [session_t, close_request_t]
739
715
bye.restype = _error_code
740
716
bye.errcheck = _retry_on_error
742
718
check_version = _library.gnutls_check_version
743
719
check_version.argtypes = [ctypes.c_char_p]
744
720
check_version.restype = ctypes.c_char_p
746
_need_version = b"3.3.0"
747
if check_version(_need_version) is None:
748
raise self.Error("Needs GnuTLS {} or later"
749
.format(_need_version))
751
_tls_rawpk_version = b"3.6.6"
752
has_rawpk = bool(check_version(_tls_rawpk_version))
756
class pubkey_st(ctypes.Structure):
758
pubkey_t = ctypes.POINTER(pubkey_st)
760
x509_crt_fmt_t = ctypes.c_int
762
# All the function declarations below are from gnutls/abstract.h
763
pubkey_init = _library.gnutls_pubkey_init
764
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
765
pubkey_init.restype = _error_code
767
pubkey_import = _library.gnutls_pubkey_import
768
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
770
pubkey_import.restype = _error_code
772
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
773
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
774
ctypes.POINTER(ctypes.c_ubyte),
775
ctypes.POINTER(ctypes.c_size_t)]
776
pubkey_get_key_id.restype = _error_code
778
pubkey_deinit = _library.gnutls_pubkey_deinit
779
pubkey_deinit.argtypes = [pubkey_t]
780
pubkey_deinit.restype = None
782
# All the function declarations below are from gnutls/openpgp.h
784
openpgp_crt_init = _library.gnutls_openpgp_crt_init
785
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
786
openpgp_crt_init.restype = _error_code
788
openpgp_crt_import = _library.gnutls_openpgp_crt_import
789
openpgp_crt_import.argtypes = [openpgp_crt_t,
790
ctypes.POINTER(datum_t),
792
openpgp_crt_import.restype = _error_code
794
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
795
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
796
ctypes.POINTER(ctypes.c_uint)]
797
openpgp_crt_verify_self.restype = _error_code
799
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
800
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
801
openpgp_crt_deinit.restype = None
803
openpgp_crt_get_fingerprint = (
804
_library.gnutls_openpgp_crt_get_fingerprint)
805
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
809
openpgp_crt_get_fingerprint.restype = _error_code
811
if check_version(b"3.6.4"):
812
certificate_type_get2 = _library.gnutls_certificate_type_get2
813
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
814
certificate_type_get2.restype = _error_code
722
# All the function declarations below are from gnutls/openpgp.h
724
openpgp_crt_init = _library.gnutls_openpgp_crt_init
725
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
726
openpgp_crt_init.restype = _error_code
728
openpgp_crt_import = _library.gnutls_openpgp_crt_import
729
openpgp_crt_import.argtypes = [openpgp_crt_t,
730
ctypes.POINTER(datum_t),
732
openpgp_crt_import.restype = _error_code
734
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
735
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
736
ctypes.POINTER(ctypes.c_uint)]
737
openpgp_crt_verify_self.restype = _error_code
739
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
740
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
741
openpgp_crt_deinit.restype = None
743
openpgp_crt_get_fingerprint = (
744
_library.gnutls_openpgp_crt_get_fingerprint)
745
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
749
openpgp_crt_get_fingerprint.restype = _error_code
816
751
# Remove non-public functions
817
752
del _error_code, _retry_on_error
753
# Create the global "gnutls" object, simulating a module
820
756
def call_pipe(connection, # : multiprocessing.Connection
821
757
func, *args, **kwargs):
822
758
"""This function is meant to be called by multiprocessing.Process
824
760
This function runs func(*args, **kwargs), and writes the resulting
825
761
return value on the provided multiprocessing.Connection.
827
763
connection.send(func(*args, **kwargs))
828
764
connection.close()
766
class Client(object):
832
767
"""A representation of a client host served by this server.
835
770
approved: bool(); 'None' if not yet approved/disapproved
836
771
approval_delay: datetime.timedelta(); Time to wait for approval
837
772
approval_duration: datetime.timedelta(); Duration of one approval
838
checker: multiprocessing.Process(); a running checker process used
839
to see if the client lives. 'None' if no process is
773
checker: subprocess.Popen(); a running checker process used
774
to see if the client lives.
775
'None' if no process is running.
841
776
checker_callback_tag: a GLib event source tag, or None
842
777
checker_command: string; External command which is run to check
843
778
if client lives. %() expansions are done at
1519
1447
exc_info=error)
1520
1448
return xmlstring
1524
1451
dbus.OBJECT_MANAGER_IFACE
1525
1452
except AttributeError:
1526
1453
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1529
1455
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1530
1456
"""A D-Bus object with an ObjectManager.
1532
1458
Classes inheriting from this exposes the standard
1533
1459
GetManagedObjects call and the InterfacesAdded and
1534
1460
InterfacesRemoved signals on the standard
1535
1461
"org.freedesktop.DBus.ObjectManager" interface.
1537
1463
Note: No signals are sent automatically; they must be sent
1540
1466
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1541
out_signature="a{oa{sa{sv}}}")
1467
out_signature = "a{oa{sa{sv}}}")
1542
1468
def GetManagedObjects(self):
1543
1469
"""This function must be overridden"""
1544
1470
raise NotImplementedError()
1546
1472
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1547
signature="oa{sa{sv}}")
1473
signature = "oa{sa{sv}}")
1548
1474
def InterfacesAdded(self, object_path, interfaces_and_properties):
1551
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1477
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1552
1478
def InterfacesRemoved(self, object_path, interfaces):
1555
1481
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1557
path_keyword='object_path',
1558
connection_keyword='connection')
1482
out_signature = "s",
1483
path_keyword = 'object_path',
1484
connection_keyword = 'connection')
1559
1485
def Introspect(self, object_path, connection):
1560
1486
"""Overloading of standard D-Bus method.
1562
1488
Override return argument name of GetManagedObjects to be
1563
1489
"objpath_interfaces_and_properties"
2506
class MultiprocessingMixIn:
2365
class MultiprocessingMixIn(object):
2507
2366
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2509
2368
def sub_process_main(self, request, address):
2511
2370
self.finish_request(request, address)
2512
2371
except Exception:
2513
2372
self.handle_error(request, address)
2514
2373
self.close_request(request)
2516
2375
def process_request(self, request, address):
2517
2376
"""Start a new process to process the request."""
2518
proc = multiprocessing.Process(target=self.sub_process_main,
2519
args=(request, address))
2377
proc = multiprocessing.Process(target = self.sub_process_main,
2378
args = (request, address))
2524
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2383
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2525
2384
""" adds a pipe to the MixIn """
2527
2386
def process_request(self, request, client_address):
2528
2387
"""Overrides and wraps the original process_request().
2530
2389
This function creates a new pipe in self.pipe
2532
2391
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2534
2393
proc = MultiprocessingMixIn.process_request(self, request,
2535
2394
client_address)
2536
2395
self.child_pipe.close()
2537
2396
self.add_pipe(parent_pipe, proc)
2539
2398
def add_pipe(self, parent_pipe, proc):
2540
2399
"""Dummy function; override as necessary"""
2541
2400
raise NotImplementedError()
2544
2403
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2545
socketserver.TCPServer):
2404
socketserver.TCPServer, object):
2546
2405
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2549
2408
enabled: Boolean; whether this server is activated yet
2550
2409
interface: None or a network interface name (string)
2551
2410
use_ipv6: Boolean; to use IPv6 or not
2554
2413
def __init__(self, server_address, RequestHandlerClass,
2555
2414
interface=None,
2667
2523
self.gnutls_priority = gnutls_priority
2668
2524
IPv6_TCPServer.__init__(self, server_address,
2669
2525
RequestHandlerClass,
2670
interface=interface,
2526
interface = interface,
2527
use_ipv6 = use_ipv6,
2528
socketfd = socketfd)
2674
2530
def server_activate(self):
2675
2531
if self.enabled:
2676
2532
return socketserver.TCPServer.server_activate(self)
2678
2534
def enable(self):
2679
2535
self.enabled = True
2681
2537
def add_pipe(self, parent_pipe, proc):
2682
2538
# Call "handle_ipc" for both data and EOF events
2683
2539
GLib.io_add_watch(
2684
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2685
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2540
parent_pipe.fileno(),
2541
GLib.IO_IN | GLib.IO_HUP,
2686
2542
functools.partial(self.handle_ipc,
2687
parent_pipe=parent_pipe,
2543
parent_pipe = parent_pipe,
2690
2546
def handle_ipc(self, source, condition,
2691
2547
parent_pipe=None,
2693
2549
client_object=None):
2694
2550
# error, or the other end of multiprocessing.Pipe has closed
2695
2551
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2696
2552
# Wait for other process to exit
2700
2556
# Read a request from the child
2701
2557
request = parent_pipe.recv()
2702
2558
command = request[0]
2704
2560
if command == 'init':
2705
key_id = request[1].decode("ascii")
2706
fpr = request[2].decode("ascii")
2707
address = request[3]
2562
address = request[2]
2709
2564
for c in self.clients.values():
2710
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2712
if key_id and c.key_id == key_id:
2715
if fpr and c.fingerprint == fpr:
2565
if c.fingerprint == fpr:
2719
logger.info("Client not found for key ID: %s, address"
2720
": %s", key_id or fpr, address)
2569
logger.info("Client not found for fingerprint: %s, ad"
2570
"dress: %s", fpr, address)
2721
2571
if self.use_dbus:
2722
2572
# Emit D-Bus signal
2723
mandos_dbus_service.ClientNotFound(key_id or fpr,
2573
mandos_dbus_service.ClientNotFound(fpr,
2725
2575
parent_pipe.send(False)
2728
2578
GLib.io_add_watch(
2729
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2730
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2579
parent_pipe.fileno(),
2580
GLib.IO_IN | GLib.IO_HUP,
2731
2581
functools.partial(self.handle_ipc,
2732
parent_pipe=parent_pipe,
2734
client_object=client))
2582
parent_pipe = parent_pipe,
2584
client_object = client))
2735
2585
parent_pipe.send(True)
2736
2586
# remove the old hook in favor of the new above hook on
2754
2604
parent_pipe.send((
2755
2605
'data', client_object.__getattribute__(attrname)))
2757
2607
if command == 'setattr':
2758
2608
attrname = request[1]
2759
2609
value = request[2]
2760
2610
setattr(client_object, attrname, value)
2765
2615
def rfc3339_duration_to_delta(duration):
2766
2616
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2768
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2770
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2772
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2774
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2776
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2778
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2780
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2618
>>> rfc3339_duration_to_delta("P7D")
2619
datetime.timedelta(7)
2620
>>> rfc3339_duration_to_delta("PT60S")
2621
datetime.timedelta(0, 60)
2622
>>> rfc3339_duration_to_delta("PT60M")
2623
datetime.timedelta(0, 3600)
2624
>>> rfc3339_duration_to_delta("PT24H")
2625
datetime.timedelta(1)
2626
>>> rfc3339_duration_to_delta("P1W")
2627
datetime.timedelta(7)
2628
>>> rfc3339_duration_to_delta("PT5M30S")
2629
datetime.timedelta(0, 330)
2630
>>> rfc3339_duration_to_delta("P1DT3M20S")
2631
datetime.timedelta(1, 200)
2784
2634
# Parsing an RFC 3339 duration with regular expressions is not
2785
2635
# possible - there would have to be multiple places for the same
2786
2636
# values, like seconds. The current code, while more esoteric, is
2787
2637
# cleaner without depending on a parsing library. If Python had a
2788
2638
# built-in library for parsing we would use it, but we'd like to
2789
2639
# avoid excessive use of external libraries.
2791
2641
# New type for defining tokens, syntax, and semantics all-in-one
2792
2642
Token = collections.namedtuple("Token", (
2793
2643
"regexp", # To match token; if "value" is not None, must have
2980
2827
parser.add_argument("--no-zeroconf", action="store_false",
2981
2828
dest="zeroconf", help="Do not use Zeroconf",
2984
2831
options = parser.parse_args()
2835
fail_count, test_count = doctest.testmod()
2836
sys.exit(os.EX_OK if fail_count == 0 else 1)
2986
2838
# Default values for config file for server-global settings
2987
if gnutls.has_rawpk:
2988
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
2989
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
2991
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2992
":+SIGN-DSA-SHA256")
2993
server_defaults = {"interface": "",
2997
"priority": priority,
2998
"servicename": "Mandos",
3004
"statedir": "/var/lib/mandos",
3005
"foreground": "False",
2839
server_defaults = { "interface": "",
2844
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2845
":+SIGN-DSA-SHA256",
2846
"servicename": "Mandos",
2852
"statedir": "/var/lib/mandos",
2853
"foreground": "False",
3010
2857
# Parse config file for server-global settings
3011
server_config = configparser.ConfigParser(server_defaults)
2858
server_config = configparser.SafeConfigParser(server_defaults)
3012
2859
del server_defaults
3013
2860
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3014
# Convert the ConfigParser object to a dict
2861
# Convert the SafeConfigParser object to a dict
3015
2862
server_settings = server_config.defaults()
3016
2863
# Use the appropriate methods on the non-string config options
3017
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3018
"foreground", "zeroconf"):
2864
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3019
2865
server_settings[option] = server_config.getboolean("DEFAULT",
3021
2867
if server_settings["port"]:
3194
3040
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3195
3041
service = AvahiServiceToSyslog(
3196
name=server_settings["servicename"],
3197
servicetype="_mandos._tcp",
3042
name = server_settings["servicename"],
3043
servicetype = "_mandos._tcp",
3044
protocol = protocol,
3200
3046
if server_settings["interface"]:
3201
3047
service.interface = if_nametoindex(
3202
3048
server_settings["interface"].encode("utf-8"))
3204
3050
global multiprocessing_manager
3205
3051
multiprocessing_manager = multiprocessing.Manager()
3207
3053
client_class = Client
3209
client_class = functools.partial(ClientDBus, bus=bus)
3055
client_class = functools.partial(ClientDBus, bus = bus)
3211
3057
client_settings = Client.config_parser(client_config)
3212
3058
old_client_settings = {}
3213
3059
clients_data = {}
3215
3061
# This is used to redirect stdout and stderr for checker processes
3217
wnull = open(os.devnull, "w") # A writable /dev/null
3063
wnull = open(os.devnull, "w") # A writable /dev/null
3218
3064
# Only used if server is running in foreground but not in debug
3220
3066
if debug or not foreground:
3223
3069
# Get client data and settings from last running state.
3224
3070
if server_settings["restore"]:
3226
3072
with open(stored_state_path, "rb") as stored_state:
3227
if sys.version_info.major == 2:
3073
if sys.version_info.major == 2:
3228
3074
clients_data, old_client_settings = pickle.load(
3231
3077
bytes_clients_data, bytes_old_client_settings = (
3232
pickle.load(stored_state, encoding="bytes"))
3233
# Fix bytes to strings
3078
pickle.load(stored_state, encoding = "bytes"))
3079
### Fix bytes to strings
3236
clients_data = {(key.decode("utf-8")
3237
if isinstance(key, bytes)
3240
bytes_clients_data.items()}
3082
clients_data = { (key.decode("utf-8")
3083
if isinstance(key, bytes)
3086
bytes_clients_data.items() }
3241
3087
del bytes_clients_data
3242
3088
for key in clients_data:
3243
value = {(k.decode("utf-8")
3244
if isinstance(k, bytes) else k): v
3246
clients_data[key].items()}
3089
value = { (k.decode("utf-8")
3090
if isinstance(k, bytes) else k): v
3092
clients_data[key].items() }
3247
3093
clients_data[key] = value
3248
3094
# .client_structure
3249
3095
value["client_structure"] = [
3250
3096
(s.decode("utf-8")
3251
3097
if isinstance(s, bytes)
3252
3098
else s) for s in
3253
value["client_structure"]]
3099
value["client_structure"] ]
3254
3100
# .name & .host
3255
3101
for k in ("name", "host"):
3256
3102
if isinstance(value[k], bytes):
3257
3103
value[k] = value[k].decode("utf-8")
3258
if "key_id" not in value:
3259
value["key_id"] = ""
3260
elif "fingerprint" not in value:
3261
value["fingerprint"] = ""
3262
# old_client_settings
3104
## old_client_settings
3264
3106
old_client_settings = {
3265
3107
(key.decode("utf-8")
3266
3108
if isinstance(key, bytes)
3267
3109
else key): value
3268
3110
for key, value in
3269
bytes_old_client_settings.items()}
3111
bytes_old_client_settings.items() }
3270
3112
del bytes_old_client_settings
3272
3114
for value in old_client_settings.values():