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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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# -*- mode: python; coding: utf-8 -*-
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# Mandos server - give out binary blobs to connecting clients.
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# This program is partly derived from an example program for an Avahi
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# service publisher, downloaded from
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# <http://avahi.org/wiki/PythonPublishExample>. This includes the
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# methods "add", "remove", "server_state_changed",
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# "entry_group_state_changed", "cleanup", and "activate" in the
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# "AvahiService" class, and some lines in "main".
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# 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
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# under the terms of the GNU General Public License as published by
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# Copyright © 2008-2016 Teddy Hogeborn
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# Copyright © 2008-2016 Björn Påhlsson
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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19
# the Free Software Foundation, either version 3 of the License, or
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20
# (at your option) any later version.
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# Mandos is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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25
# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# 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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from __future__ import (division, absolute_import, print_function,
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import xml.dom.minidom
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if sys.version_info.major == 2:
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# Add collections.abc.Callable if it does not exist
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collections.abc.Callable
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except AttributeError:
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Callable = collections.Callable
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collections.abc = abc
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# Add shlex.quote if it does not exist
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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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warnings.simplefilter("default")
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# Try to find the value of SO_BINDTODEVICE:
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# This is where SO_BINDTODEVICE is in Python 3.3 (or 3.4?) and
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# newer, and it is also the most natural place for it:
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SO_BINDTODEVICE = socket.SO_BINDTODEVICE
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except AttributeError:
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# This is where SO_BINDTODEVICE was up to and including Python
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from IN import SO_BINDTODEVICE
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except ImportError:
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# In Python 2.7 it seems to have been removed entirely.
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# Try running the C preprocessor:
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cc = subprocess.Popen(["cc", "--language=c", "-E",
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE)
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stdout = cc.communicate(
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"#include <sys/socket.h>\nSO_BINDTODEVICE\n")[0]
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SO_BINDTODEVICE = int(stdout.splitlines()[-1])
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except (OSError, ValueError, IndexError):
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SO_BINDTODEVICE = None
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if sys.version_info < (3, 2):
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configparser.Configparser = configparser.SafeConfigParser
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SO_BINDTODEVICE = None
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if sys.version_info.major == 2:
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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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if_nametoindex = ctypes.cdll.LoadLibrary(
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ctypes.util.find_library("c")).if_nametoindex
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except (OSError, AttributeError):
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111
def if_nametoindex(interface):
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"Get an interface index the hard way, i.e. using fcntl()"
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SIOCGIFINDEX = 0x8933 # From /usr/include/linux/sockios.h
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'--passphrase-file',
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+ 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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if proc.returncode != 0:
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raise PGPError(err)
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return ciphertext
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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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'--passphrase-file',
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+ 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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258
# Pretend that we have an Avahi module
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"""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."""
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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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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."""
538
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)
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class GnuTLS(object):
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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 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"
493
# Need to use class name "GnuTLS" here, since this method is
494
# 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"
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.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
561
KEYID_USE_SHA256 = 1 # gnutls/x509.h
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OPENPGP_FMT_RAW = 0 # gnutls/openpgp.h
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class session_int(ctypes.Structure):
567
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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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certificate_credentials_st)
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certificate_type_t = ctypes.c_int
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class datum_t(ctypes.Structure):
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_fields_ = [('data', ctypes.POINTER(ctypes.c_ubyte)),
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('size', ctypes.c_uint)]
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class openpgp_crt_int(ctypes.Structure):
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openpgp_crt_t = ctypes.POINTER(openpgp_crt_int)
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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
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openpgp_crt_fmt_t = ctypes.c_int # gnutls/openpgp.h
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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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transport_ptr_t = ctypes.c_void_p
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close_request_t = ctypes.c_int
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class Error(Exception):
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def __init__(self, message=None, code=None, args=()):
537
# We need to use the class name "GnuTLS" here, since this
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# exception might be raised from within GnuTLS.__init__,
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# which is called before the assignment to the "gnutls"
540
# global variable has happened.
541
def __init__(self, message = None, code = None, args=()):
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# Default usage is by a message string, but if a return
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# code is passed, convert it to a string with
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# gnutls.strerror()
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if message is None and code is not None:
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message = gnutls.strerror(code)
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return super(gnutls.Error, self).__init__(
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message = GnuTLS.strerror(code)
548
return super(GnuTLS.Error, self).__init__(
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class CertificateSecurityError(Error):
555
class Credentials(object):
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556
def __init__(self):
606
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self._c_object = gnutls.certificate_credentials_t()
607
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gnutls.certificate_allocate_credentials(
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559
ctypes.byref(self._c_object))
609
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self.type = gnutls.CRD_CERTIFICATE
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def __del__(self):
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gnutls.certificate_free_credentials(self._c_object)
615
def __init__(self, socket, credentials=None):
565
class ClientSession(object):
566
def __init__(self, socket, credentials = None):
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self._c_object = gnutls.session_t()
617
gnutls_flags = gnutls.CLIENT
618
if gnutls.check_version(b"3.5.6"):
619
gnutls_flags |= gnutls.NO_TICKETS
621
gnutls_flags |= gnutls.ENABLE_RAWPK
622
gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
568
gnutls.init(ctypes.byref(self._c_object), gnutls.CLIENT)
624
569
gnutls.set_default_priority(self._c_object)
625
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gnutls.transport_set_ptr(self._c_object, socket.fileno())
626
571
gnutls.handshake_set_private_extensions(self._c_object,
668
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return _error_code(result)
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result = func(*arguments)
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# Unless otherwise indicated, the function declarations below are
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# all from the gnutls/gnutls.h C header file.
676
621
priority_set_direct = _library.gnutls_priority_set_direct
677
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priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
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ctypes.POINTER(ctypes.c_char_p)]
679
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priority_set_direct.restype = _error_code
681
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init = _library.gnutls_init
682
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init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
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init.restype = _error_code
685
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set_default_priority = _library.gnutls_set_default_priority
686
631
set_default_priority.argtypes = [session_t]
687
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set_default_priority.restype = _error_code
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record_send = _library.gnutls_record_send
690
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record_send.argtypes = [session_t, ctypes.c_void_p,
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record_send.restype = ctypes.c_ssize_t
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record_send.errcheck = _retry_on_error
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certificate_allocate_credentials = (
696
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_library.gnutls_certificate_allocate_credentials)
697
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certificate_allocate_credentials.argtypes = [
698
643
ctypes.POINTER(certificate_credentials_t)]
699
644
certificate_allocate_credentials.restype = _error_code
701
646
certificate_free_credentials = (
702
647
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
648
certificate_free_credentials.argtypes = [certificate_credentials_t]
705
649
certificate_free_credentials.restype = None
707
651
handshake_set_private_extensions = (
708
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_library.gnutls_handshake_set_private_extensions)
709
653
handshake_set_private_extensions.argtypes = [session_t,
711
655
handshake_set_private_extensions.restype = None
713
657
credentials_set = _library.gnutls_credentials_set
714
658
credentials_set.argtypes = [session_t, credentials_type_t,
716
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credentials_set.restype = _error_code
718
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strerror = _library.gnutls_strerror
719
663
strerror.argtypes = [ctypes.c_int]
720
664
strerror.restype = ctypes.c_char_p
722
666
certificate_type_get = _library.gnutls_certificate_type_get
723
667
certificate_type_get.argtypes = [session_t]
724
668
certificate_type_get.restype = _error_code
726
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certificate_get_peers = _library.gnutls_certificate_get_peers
727
671
certificate_get_peers.argtypes = [session_t,
728
672
ctypes.POINTER(ctypes.c_uint)]
729
673
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
675
global_set_log_level = _library.gnutls_global_set_log_level
732
676
global_set_log_level.argtypes = [ctypes.c_int]
733
677
global_set_log_level.restype = None
735
679
global_set_log_function = _library.gnutls_global_set_log_function
736
680
global_set_log_function.argtypes = [log_func]
737
681
global_set_log_function.restype = None
739
683
deinit = _library.gnutls_deinit
740
684
deinit.argtypes = [session_t]
741
685
deinit.restype = None
743
687
handshake = _library.gnutls_handshake
744
688
handshake.argtypes = [session_t]
745
689
handshake.restype = _error_code
746
690
handshake.errcheck = _retry_on_error
748
692
transport_set_ptr = _library.gnutls_transport_set_ptr
749
693
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
694
transport_set_ptr.restype = None
752
696
bye = _library.gnutls_bye
753
697
bye.argtypes = [session_t, close_request_t]
754
698
bye.restype = _error_code
755
699
bye.errcheck = _retry_on_error
757
701
check_version = _library.gnutls_check_version
758
702
check_version.argtypes = [ctypes.c_char_p]
759
703
check_version.restype = ctypes.c_char_p
761
_need_version = b"3.3.0"
762
if check_version(_need_version) is None:
763
raise self.Error("Needs GnuTLS {} or later"
764
.format(_need_version))
766
_tls_rawpk_version = b"3.6.6"
767
has_rawpk = bool(check_version(_tls_rawpk_version))
771
class pubkey_st(ctypes.Structure):
773
pubkey_t = ctypes.POINTER(pubkey_st)
775
x509_crt_fmt_t = ctypes.c_int
777
# All the function declarations below are from gnutls/abstract.h
778
pubkey_init = _library.gnutls_pubkey_init
779
pubkey_init.argtypes = [ctypes.POINTER(pubkey_t)]
780
pubkey_init.restype = _error_code
782
pubkey_import = _library.gnutls_pubkey_import
783
pubkey_import.argtypes = [pubkey_t, ctypes.POINTER(datum_t),
785
pubkey_import.restype = _error_code
787
pubkey_get_key_id = _library.gnutls_pubkey_get_key_id
788
pubkey_get_key_id.argtypes = [pubkey_t, ctypes.c_int,
789
ctypes.POINTER(ctypes.c_ubyte),
790
ctypes.POINTER(ctypes.c_size_t)]
791
pubkey_get_key_id.restype = _error_code
793
pubkey_deinit = _library.gnutls_pubkey_deinit
794
pubkey_deinit.argtypes = [pubkey_t]
795
pubkey_deinit.restype = None
797
# All the function declarations below are from gnutls/openpgp.h
799
openpgp_crt_init = _library.gnutls_openpgp_crt_init
800
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
801
openpgp_crt_init.restype = _error_code
803
openpgp_crt_import = _library.gnutls_openpgp_crt_import
804
openpgp_crt_import.argtypes = [openpgp_crt_t,
805
ctypes.POINTER(datum_t),
807
openpgp_crt_import.restype = _error_code
809
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
810
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
811
ctypes.POINTER(ctypes.c_uint)]
812
openpgp_crt_verify_self.restype = _error_code
814
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
815
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
816
openpgp_crt_deinit.restype = None
818
openpgp_crt_get_fingerprint = (
819
_library.gnutls_openpgp_crt_get_fingerprint)
820
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
824
openpgp_crt_get_fingerprint.restype = _error_code
826
if check_version(b"3.6.4"):
827
certificate_type_get2 = _library.gnutls_certificate_type_get2
828
certificate_type_get2.argtypes = [session_t, ctypes.c_int]
829
certificate_type_get2.restype = _error_code
705
# All the function declarations below are from gnutls/openpgp.h
707
openpgp_crt_init = _library.gnutls_openpgp_crt_init
708
openpgp_crt_init.argtypes = [ctypes.POINTER(openpgp_crt_t)]
709
openpgp_crt_init.restype = _error_code
711
openpgp_crt_import = _library.gnutls_openpgp_crt_import
712
openpgp_crt_import.argtypes = [openpgp_crt_t,
713
ctypes.POINTER(datum_t),
715
openpgp_crt_import.restype = _error_code
717
openpgp_crt_verify_self = _library.gnutls_openpgp_crt_verify_self
718
openpgp_crt_verify_self.argtypes = [openpgp_crt_t, ctypes.c_uint,
719
ctypes.POINTER(ctypes.c_uint)]
720
openpgp_crt_verify_self.restype = _error_code
722
openpgp_crt_deinit = _library.gnutls_openpgp_crt_deinit
723
openpgp_crt_deinit.argtypes = [openpgp_crt_t]
724
openpgp_crt_deinit.restype = None
726
openpgp_crt_get_fingerprint = (
727
_library.gnutls_openpgp_crt_get_fingerprint)
728
openpgp_crt_get_fingerprint.argtypes = [openpgp_crt_t,
732
openpgp_crt_get_fingerprint.restype = _error_code
831
734
# Remove non-public functions
832
735
del _error_code, _retry_on_error
736
# Create the global "gnutls" object, simulating a module
835
739
def call_pipe(connection, # : multiprocessing.Connection
836
740
func, *args, **kwargs):
837
741
"""This function is meant to be called by multiprocessing.Process
839
743
This function runs func(*args, **kwargs), and writes the resulting
840
744
return value on the provided multiprocessing.Connection.
842
746
connection.send(func(*args, **kwargs))
843
747
connection.close()
749
class Client(object):
847
750
"""A representation of a client host served by this server.
850
753
approved: bool(); 'None' if not yet approved/disapproved
851
754
approval_delay: datetime.timedelta(); Time to wait for approval
852
755
approval_duration: datetime.timedelta(); Duration of one approval
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
756
checker: subprocess.Popen(); a running checker process used
757
to see if the client lives.
758
'None' if no process is running.
856
759
checker_callback_tag: a GLib event source tag, or None
857
760
checker_command: string; External command which is run to check
858
761
if client lives. %() expansions are done at
1535
1430
exc_info=error)
1536
1431
return xmlstring
1540
1434
dbus.OBJECT_MANAGER_IFACE
1541
1435
except AttributeError:
1542
1436
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1545
1438
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
1439
"""A D-Bus object with an ObjectManager.
1548
1441
Classes inheriting from this exposes the standard
1549
1442
GetManagedObjects call and the InterfacesAdded and
1550
1443
InterfacesRemoved signals on the standard
1551
1444
"org.freedesktop.DBus.ObjectManager" interface.
1553
1446
Note: No signals are sent automatically; they must be sent
1556
1449
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1450
out_signature = "a{oa{sa{sv}}}")
1558
1451
def GetManagedObjects(self):
1559
1452
"""This function must be overridden"""
1560
1453
raise NotImplementedError()
1562
1455
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1456
signature = "oa{sa{sv}}")
1564
1457
def InterfacesAdded(self, object_path, interfaces_and_properties):
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1460
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature = "oas")
1568
1461
def InterfacesRemoved(self, object_path, interfaces):
1571
1464
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1465
out_signature = "s",
1466
path_keyword = 'object_path',
1467
connection_keyword = 'connection')
1575
1468
def Introspect(self, object_path, connection):
1576
1469
"""Overloading of standard D-Bus method.
1578
1471
Override return argument name of GetManagedObjects to be
1579
1472
"objpath_interfaces_and_properties"
2271
2154
class ClientHandler(socketserver.BaseRequestHandler, object):
2272
2155
"""A class to handle client connections.
2274
2157
Instantiated once for each connection to handle it.
2275
2158
Note: This will run in its own forked process."""
2277
2160
def handle(self):
2278
2161
with contextlib.closing(self.server.child_pipe) as child_pipe:
2279
2162
logger.info("TCP connection from: %s",
2280
2163
str(self.client_address))
2281
2164
logger.debug("Pipe FD: %d",
2282
2165
self.server.child_pipe.fileno())
2284
2167
session = gnutls.ClientSession(self.request)
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
2169
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
2170
# "+AES-256-CBC", "+SHA1",
2171
# "+COMP-NULL", "+CTYPE-OPENPGP",
2290
2173
# Use a fallback default, since this MUST be set.
2291
2174
priority = self.server.gnutls_priority
2292
2175
if priority is None:
2293
2176
priority = "NORMAL"
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
2177
gnutls.priority_set_direct(session._c_object, priority,
2298
2180
# Start communication using the Mandos protocol
2299
2181
# Get protocol number
2300
2182
line = self.request.makefile().readline()
2522
class MultiprocessingMixIn:
2347
class MultiprocessingMixIn(object):
2523
2348
"""Like socketserver.ThreadingMixIn, but with multiprocessing"""
2525
2350
def sub_process_main(self, request, address):
2527
2352
self.finish_request(request, address)
2528
2353
except Exception:
2529
2354
self.handle_error(request, address)
2530
2355
self.close_request(request)
2532
2357
def process_request(self, request, address):
2533
2358
"""Start a new process to process the request."""
2534
proc = multiprocessing.Process(target=self.sub_process_main,
2535
args=(request, address))
2359
proc = multiprocessing.Process(target = self.sub_process_main,
2360
args = (request, address))
2540
class MultiprocessingMixInWithPipe(MultiprocessingMixIn):
2365
class MultiprocessingMixInWithPipe(MultiprocessingMixIn, object):
2541
2366
""" adds a pipe to the MixIn """
2543
2368
def process_request(self, request, client_address):
2544
2369
"""Overrides and wraps the original process_request().
2546
2371
This function creates a new pipe in self.pipe
2548
2373
parent_pipe, self.child_pipe = multiprocessing.Pipe()
2550
2375
proc = MultiprocessingMixIn.process_request(self, request,
2551
2376
client_address)
2552
2377
self.child_pipe.close()
2553
2378
self.add_pipe(parent_pipe, proc)
2555
2380
def add_pipe(self, parent_pipe, proc):
2556
2381
"""Dummy function; override as necessary"""
2557
2382
raise NotImplementedError()
2560
2385
class IPv6_TCPServer(MultiprocessingMixInWithPipe,
2561
socketserver.TCPServer):
2386
socketserver.TCPServer, object):
2562
2387
"""IPv6-capable TCP server. Accepts 'None' as address and/or port
2565
2390
enabled: Boolean; whether this server is activated yet
2566
2391
interface: None or a network interface name (string)
2567
2392
use_ipv6: Boolean; to use IPv6 or not
2570
2395
def __init__(self, server_address, RequestHandlerClass,
2571
2396
interface=None,
2606
2430
# socket_wrapper(), if socketfd was set.
2607
2431
socketserver.TCPServer.__init__(self, server_address,
2608
2432
RequestHandlerClass)
2610
2434
def server_bind(self):
2611
2435
"""This overrides the normal server_bind() function
2612
2436
to bind to an interface if one was specified, and also NOT to
2613
2437
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
2615
2438
if self.interface is not None:
2616
2439
if SO_BINDTODEVICE is None:
2617
# Fall back to a hard-coded value which seems to be
2619
logger.warning("SO_BINDTODEVICE not found, trying 25")
2620
SO_BINDTODEVICE = 25
2622
self.socket.setsockopt(
2623
socket.SOL_SOCKET, SO_BINDTODEVICE,
2624
(self.interface + "\0").encode("utf-8"))
2625
except socket.error as error:
2626
if error.errno == errno.EPERM:
2627
logger.error("No permission to bind to"
2628
" interface %s", self.interface)
2629
elif error.errno == errno.ENOPROTOOPT:
2630
logger.error("SO_BINDTODEVICE not available;"
2631
" cannot bind to interface %s",
2633
elif error.errno == errno.ENODEV:
2634
logger.error("Interface %s does not exist,"
2635
" cannot bind", self.interface)
2440
logger.error("SO_BINDTODEVICE does not exist;"
2441
" cannot bind to interface %s",
2445
self.socket.setsockopt(
2446
socket.SOL_SOCKET, SO_BINDTODEVICE,
2447
(self.interface + "\0").encode("utf-8"))
2448
except socket.error as error:
2449
if error.errno == errno.EPERM:
2450
logger.error("No permission to bind to"
2451
" interface %s", self.interface)
2452
elif error.errno == errno.ENOPROTOOPT:
2453
logger.error("SO_BINDTODEVICE not available;"
2454
" cannot bind to interface %s",
2456
elif error.errno == errno.ENODEV:
2457
logger.error("Interface %s does not exist,"
2458
" cannot bind", self.interface)
2638
2461
# Only bind(2) the socket if we really need to.
2639
2462
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
2642
2463
if not self.server_address[0]:
2643
2464
if self.address_family == socket.AF_INET6:
2644
any_address = "::" # in6addr_any
2465
any_address = "::" # in6addr_any
2646
any_address = "0.0.0.0" # INADDR_ANY
2467
any_address = "0.0.0.0" # INADDR_ANY
2647
2468
self.server_address = (any_address,
2648
2469
self.server_address[1])
2649
2470
elif not self.server_address[1]:
2683
2504
self.gnutls_priority = gnutls_priority
2684
2505
IPv6_TCPServer.__init__(self, server_address,
2685
2506
RequestHandlerClass,
2686
interface=interface,
2507
interface = interface,
2508
use_ipv6 = use_ipv6,
2509
socketfd = socketfd)
2690
2511
def server_activate(self):
2691
2512
if self.enabled:
2692
2513
return socketserver.TCPServer.server_activate(self)
2694
2515
def enable(self):
2695
2516
self.enabled = True
2697
2518
def add_pipe(self, parent_pipe, proc):
2698
2519
# Call "handle_ipc" for both data and EOF events
2699
2520
GLib.io_add_watch(
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2521
parent_pipe.fileno(),
2522
GLib.IO_IN | GLib.IO_HUP,
2702
2523
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2524
parent_pipe = parent_pipe,
2706
2527
def handle_ipc(self, source, condition,
2707
2528
parent_pipe=None,
2709
2530
client_object=None):
2710
2531
# error, or the other end of multiprocessing.Pipe has closed
2711
2532
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2712
2533
# Wait for other process to exit
2716
2537
# Read a request from the child
2717
2538
request = parent_pipe.recv()
2718
2539
command = request[0]
2720
2541
if command == 'init':
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2543
address = request[2]
2725
2545
for c in self.clients.values():
2726
if key_id == "E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855":
2728
if key_id and c.key_id == key_id:
2731
if fpr and c.fingerprint == fpr:
2546
if c.fingerprint == fpr:
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
2550
logger.info("Client not found for fingerprint: %s, ad"
2551
"dress: %s", fpr, address)
2737
2552
if self.use_dbus:
2738
2553
# Emit D-Bus signal
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2554
mandos_dbus_service.ClientNotFound(fpr,
2741
2556
parent_pipe.send(False)
2744
2559
GLib.io_add_watch(
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2560
parent_pipe.fileno(),
2561
GLib.IO_IN | GLib.IO_HUP,
2747
2562
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2750
client_object=client))
2563
parent_pipe = parent_pipe,
2565
client_object = client))
2751
2566
parent_pipe.send(True)
2752
2567
# remove the old hook in favor of the new above hook on
2756
2571
funcname = request[1]
2757
2572
args = request[2]
2758
2573
kwargs = request[3]
2760
2575
parent_pipe.send(('data', getattr(client_object,
2761
2576
funcname)(*args,
2764
2579
if command == 'getattr':
2765
2580
attrname = request[1]
2766
2581
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2582
collections.Callable):
2768
2583
parent_pipe.send(('function', ))
2770
2585
parent_pipe.send((
2771
2586
'data', client_object.__getattribute__(attrname)))
2773
2588
if command == 'setattr':
2774
2589
attrname = request[1]
2775
2590
value = request[2]
2776
2591
setattr(client_object, attrname, value)
2781
2596
def rfc3339_duration_to_delta(duration):
2782
2597
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2784
>>> rfc3339_duration_to_delta("P7D") == datetime.timedelta(7)
2786
>>> rfc3339_duration_to_delta("PT60S") == datetime.timedelta(0, 60)
2788
>>> rfc3339_duration_to_delta("PT60M") == datetime.timedelta(0, 3600)
2790
>>> rfc3339_duration_to_delta("PT24H") == datetime.timedelta(1)
2792
>>> rfc3339_duration_to_delta("P1W") == datetime.timedelta(7)
2794
>>> rfc3339_duration_to_delta("PT5M30S") == datetime.timedelta(0, 330)
2796
>>> rfc3339_duration_to_delta("P1DT3M20S") == datetime.timedelta(1, 200)
2599
>>> rfc3339_duration_to_delta("P7D")
2600
datetime.timedelta(7)
2601
>>> rfc3339_duration_to_delta("PT60S")
2602
datetime.timedelta(0, 60)
2603
>>> rfc3339_duration_to_delta("PT60M")
2604
datetime.timedelta(0, 3600)
2605
>>> rfc3339_duration_to_delta("PT24H")
2606
datetime.timedelta(1)
2607
>>> rfc3339_duration_to_delta("P1W")
2608
datetime.timedelta(7)
2609
>>> rfc3339_duration_to_delta("PT5M30S")
2610
datetime.timedelta(0, 330)
2611
>>> rfc3339_duration_to_delta("P1DT3M20S")
2612
datetime.timedelta(1, 200)
2800
2615
# Parsing an RFC 3339 duration with regular expressions is not
2801
2616
# possible - there would have to be multiple places for the same
2802
2617
# values, like seconds. The current code, while more esoteric, is
2803
2618
# cleaner without depending on a parsing library. If Python had a
2804
2619
# built-in library for parsing we would use it, but we'd like to
2805
2620
# avoid excessive use of external libraries.
2807
2622
# New type for defining tokens, syntax, and semantics all-in-one
2808
2623
Token = collections.namedtuple("Token", (
2809
2624
"regexp", # To match token; if "value" is not None, must have
2996
2808
parser.add_argument("--no-zeroconf", action="store_false",
2997
2809
dest="zeroconf", help="Do not use Zeroconf",
3000
2812
options = parser.parse_args()
2816
fail_count, test_count = doctest.testmod()
2817
sys.exit(os.EX_OK if fail_count == 0 else 1)
3002
2819
# Default values for config file for server-global settings
3003
if gnutls.has_rawpk:
3004
priority = ("SECURE128:!CTYPE-X.509:+CTYPE-RAWPK:!RSA"
3005
":!VERS-ALL:+VERS-TLS1.3:%PROFILE_ULTRA")
3007
priority = ("SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
3008
":+SIGN-DSA-SHA256")
3009
server_defaults = {"interface": "",
3013
"priority": priority,
3014
"servicename": "Mandos",
3020
"statedir": "/var/lib/mandos",
3021
"foreground": "False",
2820
server_defaults = { "interface": "",
2825
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP:!RSA"
2826
":+SIGN-DSA-SHA256",
2827
"servicename": "Mandos",
2833
"statedir": "/var/lib/mandos",
2834
"foreground": "False",
3026
2838
# Parse config file for server-global settings
3027
server_config = configparser.ConfigParser(server_defaults)
2839
server_config = configparser.SafeConfigParser(server_defaults)
3028
2840
del server_defaults
3029
2841
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2842
# Convert the SafeConfigParser object to a dict
3031
2843
server_settings = server_config.defaults()
3032
2844
# Use the appropriate methods on the non-string config options
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2845
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3035
2846
server_settings[option] = server_config.getboolean("DEFAULT",
3037
2848
if server_settings["port"]:
3210
3021
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
3022
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3023
name = server_settings["servicename"],
3024
servicetype = "_mandos._tcp",
3025
protocol = protocol,
3216
3027
if server_settings["interface"]:
3217
3028
service.interface = if_nametoindex(
3218
3029
server_settings["interface"].encode("utf-8"))
3220
3031
global multiprocessing_manager
3221
3032
multiprocessing_manager = multiprocessing.Manager()
3223
3034
client_class = Client
3225
client_class = functools.partial(ClientDBus, bus=bus)
3036
client_class = functools.partial(ClientDBus, bus = bus)
3227
3038
client_settings = Client.config_parser(client_config)
3228
3039
old_client_settings = {}
3229
3040
clients_data = {}
3231
3042
# This is used to redirect stdout and stderr for checker processes
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3044
wnull = open(os.devnull, "w") # A writable /dev/null
3234
3045
# Only used if server is running in foreground but not in debug
3236
3047
if debug or not foreground:
3239
3050
# Get client data and settings from last running state.
3240
3051
if server_settings["restore"]:
3242
3053
with open(stored_state_path, "rb") as stored_state:
3243
if sys.version_info.major == 2:
3054
if sys.version_info.major == 2:
3244
3055
clients_data, old_client_settings = pickle.load(
3247
3058
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3059
pickle.load(stored_state, encoding = "bytes"))
3060
### Fix bytes to strings
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3256
bytes_clients_data.items()}
3063
clients_data = { (key.decode("utf-8")
3064
if isinstance(key, bytes)
3067
bytes_clients_data.items() }
3257
3068
del bytes_clients_data
3258
3069
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3262
clients_data[key].items()}
3070
value = { (k.decode("utf-8")
3071
if isinstance(k, bytes) else k): v
3073
clients_data[key].items() }
3263
3074
clients_data[key] = value
3264
3075
# .client_structure
3265
3076
value["client_structure"] = [
3266
3077
(s.decode("utf-8")
3267
3078
if isinstance(s, bytes)
3268
3079
else s) for s in
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3080
value["client_structure"] ]
3082
for k in ("name", "host"):
3272
3083
if isinstance(value[k], bytes):
3273
3084
value[k] = value[k].decode("utf-8")
3274
if "key_id" not in value:
3275
value["key_id"] = ""
3276
elif "fingerprint" not in value:
3277
value["fingerprint"] = ""
3278
# old_client_settings
3085
## old_client_settings
3280
3087
old_client_settings = {
3281
3088
(key.decode("utf-8")
3282
3089
if isinstance(key, bytes)
3283
3090
else key): value
3284
3091
for key, value in
3285
bytes_old_client_settings.items()}
3092
bytes_old_client_settings.items() }
3286
3093
del bytes_old_client_settings
3287
# .host and .checker_command
3288
3095
for value in old_client_settings.values():
3289
for attribute in ("host", "checker_command"):
3290
if isinstance(value[attribute], bytes):
3291
value[attribute] = (value[attribute]
3096
if isinstance(value["host"], bytes):
3097
value["host"] = (value["host"]
3293
3099
os.remove(stored_state_path)
3294
3100
except IOError as e:
3295
3101
if e.errno == errno.ENOENT: