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# -*- mode: python; coding: utf-8 -*-
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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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# 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 © 2008-2012 Teddy Hogeborn
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# Copyright © 2008-2012 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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# 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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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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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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# 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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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# 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 this program. If not, see
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# <http://www.gnu.org/licenses/>.
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# along with Mandos. If not, see <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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from future_builtins import *
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from future_builtins import *
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import SocketServer as socketserver
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import SocketServer as socketserver
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import gnutls.connection
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import gnutls.library.functions
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import gnutls.library.constants
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import gnutls.library.types
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import ConfigParser as configparser
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import ConfigParser as configparser
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import cPickle as pickle
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import cPickle as pickle
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import multiprocessing
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import dbus.service
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from gi.repository import GLib
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from dbus.mainloop.glib import DBusGMainLoop
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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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SO_BINDTODEVICE = None
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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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stored_state_file = "clients.pickle"
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logger = logging.getLogger()
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syslogger = (logging.handlers.SysLogHandler
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(facility = logging.handlers.SysLogHandler.LOG_DAEMON,
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address = str("/dev/log")))
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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"))
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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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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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with contextlib.closing(socket.socket()) as s:
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ifreq = fcntl.ioctl(s, SIOCGIFINDEX,
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struct.pack(str("16s16x"),
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interface_index = struct.unpack(str("I"),
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struct.pack(b"16s16x", interface))
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interface_index = struct.unpack("I", ifreq[16:20])[0]
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return interface_index
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def copy_function(func):
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"""Make a copy of a function"""
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if sys.version_info.major == 2:
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return types.FunctionType(func.func_code,
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return types.FunctionType(func.__code__,
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def initlogger(debug, level=logging.WARNING):
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"""init logger and add loglevel"""
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syslogger = (logging.handlers.SysLogHandler(
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facility=logging.handlers.SysLogHandler.LOG_DAEMON,
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syslogger.setFormatter(logging.Formatter
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('Mandos [%(process)d]: %(levelname)s:'
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logger.addHandler(syslogger)
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console = logging.StreamHandler()
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console.setFormatter(logging.Formatter('%(asctime)s %(name)s'
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os.rmdir(self.tempdir)
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self.tempdir = None
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def password_encode(self, password):
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# Passphrase can not be empty and can not contain newlines or
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# NUL bytes. So we prefix it and hex encode it.
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return b"mandos" + binascii.hexlify(password)
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encoded = b"mandos" + binascii.hexlify(password)
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if len(encoded) > 2048:
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# GnuPG can't handle long passwords, so encode differently
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encoded = (b"mandos" + password.replace(b"\\", b"\\\\")
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.replace(b"\n", b"\\n")
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.replace(b"\0", b"\\x00"))
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def encrypt(self, data, password):
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self.gnupg.passphrase = self.password_encode(password)
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with open(os.devnull, "w") as devnull:
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proc = self.gnupg.run(['--symmetric'],
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create_fhs=['stdin', 'stdout'],
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attach_fhs={'stderr': devnull})
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with contextlib.closing(proc.handles['stdin']) as f:
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with contextlib.closing(proc.handles['stdout']) as f:
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ciphertext = f.read()
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self.gnupg.passphrase = None
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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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passfile.write(passphrase)
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proc = subprocess.Popen([self.gpg, '--symmetric',
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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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return ciphertext
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def decrypt(self, data, password):
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self.gnupg.passphrase = self.password_encode(password)
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with open(os.devnull, "w") as devnull:
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proc = self.gnupg.run(['--decrypt'],
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create_fhs=['stdin', 'stdout'],
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attach_fhs={'stderr': devnull})
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with contextlib.closing(proc.handles['stdin']) as f:
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with contextlib.closing(proc.handles['stdout']) as f:
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decrypted_plaintext = f.read()
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self.gnupg.passphrase = None
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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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passfile.write(passphrase)
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proc = subprocess.Popen([self.gpg, '--decrypt',
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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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return decrypted_plaintext
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# 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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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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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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class AvahiError(Exception):
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def __init__(self, value, *args, **kwargs):
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self.value = value
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super(AvahiError, self).__init__(value, *args, **kwargs)
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def __unicode__(self):
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return unicode(repr(self.value))
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return super(AvahiError, self).__init__(value, *args,
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class AvahiServiceError(AvahiError):
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class AvahiGroupError(AvahiError):
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class AvahiService(object):
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"""An Avahi (Zeroconf) service.
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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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See <http://www.dns-sd.org/ServiceTypes.html>
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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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domain: string; Domain to publish on, default to .local if empty.
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follow_name_owner_changes=True),
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avahi.DBUS_INTERFACE_SERVER)
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self.server.connect_to_signal("StateChanged",
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self.server_state_changed)
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self.server_state_changed)
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self.server_state_changed(self.server.GetState())
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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 = AvahiService.rename(self)
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syslogger.setFormatter(logging.Formatter
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('Mandos ({0}) [%(process)d]:'
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' %(levelname)s: %(message)s'
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ret = super(AvahiServiceToSyslog, self).rename(*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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def timedelta_to_milliseconds(td):
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"Convert a datetime.timedelta() to milliseconds"
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return ((td.days * 24 * 60 * 60 * 1000)
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+ (td.seconds * 1000)
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+ (td.microseconds // 1000))
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class Client(object):
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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."""
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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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# 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_NO_CERTIFICATE_FOUND = -49
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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
session_t = ctypes.POINTER(session_int)
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class certificate_credentials_st(ctypes.Structure):
571
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):
576
_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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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=()):
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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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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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class CertificateSecurityError(Error):
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self._c_object = gnutls.certificate_credentials_t()
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gnutls.certificate_allocate_credentials(
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ctypes.byref(self._c_object))
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self.type = gnutls.CRD_CERTIFICATE
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gnutls.certificate_free_credentials(self._c_object)
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def __init__(self, socket, credentials=None):
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self._c_object = gnutls.session_t()
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gnutls_flags = gnutls.CLIENT
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if gnutls.check_version(b"3.5.6"):
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gnutls_flags |= gnutls.NO_TICKETS
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gnutls_flags |= gnutls.ENABLE_RAWPK
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gnutls.init(ctypes.byref(self._c_object), gnutls_flags)
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gnutls.set_default_priority(self._c_object)
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gnutls.transport_set_ptr(self._c_object, socket.fileno())
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gnutls.handshake_set_private_extensions(self._c_object,
629
if credentials is None:
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credentials = gnutls.Credentials()
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gnutls.credentials_set(self._c_object, credentials.type,
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ctypes.cast(credentials._c_object,
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self.credentials = credentials
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gnutls.deinit(self._c_object)
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return gnutls.handshake(self._c_object)
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def send(self, data):
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data_len -= gnutls.record_send(self._c_object,
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return gnutls.bye(self._c_object, gnutls.SHUT_RDWR)
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# Error handling functions
654
def _error_code(result):
655
"""A function to raise exceptions on errors, suitable
656
for the 'restype' attribute on ctypes functions"""
659
if result == gnutls.E_NO_CERTIFICATE_FOUND:
660
raise gnutls.CertificateSecurityError(code=result)
661
raise gnutls.Error(code=result)
663
def _retry_on_error(result, func, arguments):
664
"""A function to retry on some errors, suitable
665
for the 'errcheck' attribute on ctypes functions"""
667
if result not in (gnutls.E_INTERRUPTED, gnutls.E_AGAIN):
668
return _error_code(result)
669
result = func(*arguments)
672
# Unless otherwise indicated, the function declarations below are
673
# all from the gnutls/gnutls.h C header file.
676
priority_set_direct = _library.gnutls_priority_set_direct
677
priority_set_direct.argtypes = [session_t, ctypes.c_char_p,
678
ctypes.POINTER(ctypes.c_char_p)]
679
priority_set_direct.restype = _error_code
681
init = _library.gnutls_init
682
init.argtypes = [ctypes.POINTER(session_t), ctypes.c_int]
683
init.restype = _error_code
685
set_default_priority = _library.gnutls_set_default_priority
686
set_default_priority.argtypes = [session_t]
687
set_default_priority.restype = _error_code
689
record_send = _library.gnutls_record_send
690
record_send.argtypes = [session_t, ctypes.c_void_p,
692
record_send.restype = ctypes.c_ssize_t
693
record_send.errcheck = _retry_on_error
695
certificate_allocate_credentials = (
696
_library.gnutls_certificate_allocate_credentials)
697
certificate_allocate_credentials.argtypes = [
698
ctypes.POINTER(certificate_credentials_t)]
699
certificate_allocate_credentials.restype = _error_code
701
certificate_free_credentials = (
702
_library.gnutls_certificate_free_credentials)
703
certificate_free_credentials.argtypes = [
704
certificate_credentials_t]
705
certificate_free_credentials.restype = None
707
handshake_set_private_extensions = (
708
_library.gnutls_handshake_set_private_extensions)
709
handshake_set_private_extensions.argtypes = [session_t,
711
handshake_set_private_extensions.restype = None
713
credentials_set = _library.gnutls_credentials_set
714
credentials_set.argtypes = [session_t, credentials_type_t,
716
credentials_set.restype = _error_code
718
strerror = _library.gnutls_strerror
719
strerror.argtypes = [ctypes.c_int]
720
strerror.restype = ctypes.c_char_p
722
certificate_type_get = _library.gnutls_certificate_type_get
723
certificate_type_get.argtypes = [session_t]
724
certificate_type_get.restype = _error_code
726
certificate_get_peers = _library.gnutls_certificate_get_peers
727
certificate_get_peers.argtypes = [session_t,
728
ctypes.POINTER(ctypes.c_uint)]
729
certificate_get_peers.restype = ctypes.POINTER(datum_t)
731
global_set_log_level = _library.gnutls_global_set_log_level
732
global_set_log_level.argtypes = [ctypes.c_int]
733
global_set_log_level.restype = None
735
global_set_log_function = _library.gnutls_global_set_log_function
736
global_set_log_function.argtypes = [log_func]
737
global_set_log_function.restype = None
739
deinit = _library.gnutls_deinit
740
deinit.argtypes = [session_t]
741
deinit.restype = None
743
handshake = _library.gnutls_handshake
744
handshake.argtypes = [session_t]
745
handshake.restype = _error_code
746
handshake.errcheck = _retry_on_error
748
transport_set_ptr = _library.gnutls_transport_set_ptr
749
transport_set_ptr.argtypes = [session_t, transport_ptr_t]
750
transport_set_ptr.restype = None
752
bye = _library.gnutls_bye
753
bye.argtypes = [session_t, close_request_t]
754
bye.restype = _error_code
755
bye.errcheck = _retry_on_error
757
check_version = _library.gnutls_check_version
758
check_version.argtypes = [ctypes.c_char_p]
759
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
831
# Remove non-public functions
832
del _error_code, _retry_on_error
835
def call_pipe(connection, # : multiprocessing.Connection
836
func, *args, **kwargs):
837
"""This function is meant to be called by multiprocessing.Process
839
This function runs func(*args, **kwargs), and writes the resulting
840
return value on the provided multiprocessing.Connection.
842
connection.send(func(*args, **kwargs))
403
847
"""A representation of a client host served by this server.
406
850
approved: bool(); 'None' if not yet approved/disapproved
407
851
approval_delay: datetime.timedelta(); Time to wait for approval
408
852
approval_duration: datetime.timedelta(); Duration of one approval
409
checker: subprocess.Popen(); a running checker process used
410
to see if the client lives.
411
'None' if no process is running.
412
checker_callback_tag: a gobject event source tag, or None
853
checker: multiprocessing.Process(); a running checker process used
854
to see if the client lives. 'None' if no process is
856
checker_callback_tag: a GLib event source tag, or None
413
857
checker_command: string; External command which is run to check
414
858
if client lives. %() expansions are done at
415
859
runtime with vars(self) as dict, so that for
416
860
instance %(name)s can be used in the command.
417
checker_initiator_tag: a gobject event source tag, or None
861
checker_initiator_tag: a GLib event source tag, or None
418
862
created: datetime.datetime(); (UTC) object creation
419
863
client_structure: Object describing what attributes a client has
420
864
and is used for storing the client at exit
421
865
current_checker_command: string; current running checker_command
422
disable_initiator_tag: a gobject event source tag, or None
866
disable_initiator_tag: a GLib event source tag, or None
424
868
fingerprint: string (40 or 32 hexadecimal digits); used to
425
uniquely identify the client
869
uniquely identify an OpenPGP client
870
key_id: string (64 hexadecimal digits); used to uniquely identify
871
a client using raw public keys
426
872
host: string; available for use by the checker command
427
873
interval: datetime.timedelta(); How often to start a new checker
428
874
last_approval_request: datetime.datetime(); (UTC) or None
591
1031
logger.info("Disabling client %s", self.name)
592
1032
if getattr(self, "disable_initiator_tag", None) is not None:
593
gobject.source_remove(self.disable_initiator_tag)
1033
GLib.source_remove(self.disable_initiator_tag)
594
1034
self.disable_initiator_tag = None
595
1035
self.expires = None
596
1036
if getattr(self, "checker_initiator_tag", None) is not None:
597
gobject.source_remove(self.checker_initiator_tag)
1037
GLib.source_remove(self.checker_initiator_tag)
598
1038
self.checker_initiator_tag = None
599
1039
self.stop_checker()
600
1040
self.enabled = False
602
1042
self.send_changedstate()
603
# Do not run this again if called by a gobject.timeout_add
1043
# Do not run this again if called by a GLib.timeout_add
606
1046
def __del__(self):
609
1049
def init_checker(self):
610
1050
# Schedule a new checker to be started an 'interval' from now,
611
1051
# and every interval from then on.
612
1052
if self.checker_initiator_tag is not None:
613
gobject.source_remove(self.checker_initiator_tag)
614
self.checker_initiator_tag = (gobject.timeout_add
615
(self.interval_milliseconds(),
1053
GLib.source_remove(self.checker_initiator_tag)
1054
self.checker_initiator_tag = GLib.timeout_add(
1055
random.randrange(int(self.interval.total_seconds() * 1000
617
1058
# Schedule a disable() when 'timeout' has passed
618
1059
if self.disable_initiator_tag is not None:
619
gobject.source_remove(self.disable_initiator_tag)
620
self.disable_initiator_tag = (gobject.timeout_add
621
(self.timeout_milliseconds(),
1060
GLib.source_remove(self.disable_initiator_tag)
1061
self.disable_initiator_tag = GLib.timeout_add(
1062
int(self.timeout.total_seconds() * 1000), self.disable)
623
1063
# Also start a new checker *right now*.
624
1064
self.start_checker()
626
def checker_callback(self, pid, condition, command):
1066
def checker_callback(self, source, condition, connection,
627
1068
"""The checker has completed, so take appropriate actions."""
1069
# Read return code from connection (see call_pipe)
1070
returncode = connection.recv()
1072
if self.checker is not None:
628
1074
self.checker_callback_tag = None
629
1075
self.checker = None
630
if os.WIFEXITED(condition):
631
self.last_checker_status = os.WEXITSTATUS(condition)
1078
self.last_checker_status = returncode
1079
self.last_checker_signal = None
632
1080
if self.last_checker_status == 0:
633
1081
logger.info("Checker for %(name)s succeeded",
635
1083
self.checked_ok()
637
logger.info("Checker for %(name)s failed",
1085
logger.info("Checker for %(name)s failed", vars(self))
640
1087
self.last_checker_status = -1
1088
self.last_checker_signal = -returncode
641
1089
logger.warning("Checker for %(name)s crashed?",
644
1093
def checked_ok(self):
645
1094
"""Assert that the client has been seen, alive and well."""
646
1095
self.last_checked_ok = datetime.datetime.utcnow()
647
1096
self.last_checker_status = 0
1097
self.last_checker_signal = None
648
1098
self.bump_timeout()
650
1100
def bump_timeout(self, timeout=None):
651
1101
"""Bump up the timeout for this client."""
652
1102
if timeout is None:
653
1103
timeout = self.timeout
654
1104
if self.disable_initiator_tag is not None:
655
gobject.source_remove(self.disable_initiator_tag)
1105
GLib.source_remove(self.disable_initiator_tag)
656
1106
self.disable_initiator_tag = None
657
1107
if getattr(self, "enabled", False):
658
self.disable_initiator_tag = (gobject.timeout_add
659
(timedelta_to_milliseconds
660
(timeout), self.disable))
1108
self.disable_initiator_tag = GLib.timeout_add(
1109
int(timeout.total_seconds() * 1000), self.disable)
661
1110
self.expires = datetime.datetime.utcnow() + timeout
663
1112
def need_approval(self):
664
1113
self.last_approval_request = datetime.datetime.utcnow()
666
1115
def start_checker(self):
667
1116
"""Start a new checker subprocess if one is not running.
669
1118
If a checker already exists, leave it running and do
671
1120
# The reason for not killing a running checker is that if we
676
1125
# checkers alone, the checker would have to take more time
677
1126
# than 'timeout' for the client to be disabled, which is as it
680
# If a checker exists, make sure it is not a zombie
682
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
683
except (AttributeError, OSError) as error:
684
if (isinstance(error, OSError)
685
and error.errno != errno.ECHILD):
689
logger.warning("Checker was a zombie")
690
gobject.source_remove(self.checker_callback_tag)
691
self.checker_callback(pid, status,
692
self.current_checker_command)
1129
if self.checker is not None and not self.checker.is_alive():
1130
logger.warning("Checker was not alive; joining")
693
1133
# Start a new checker if needed
694
1134
if self.checker is None:
695
1135
# Escape attributes for the shell
696
escaped_attrs = dict(
697
(attr, re.escape(unicode(getattr(self, attr))))
699
self.runtime_expansions)
1137
attr: shlex.quote(str(getattr(self, attr)))
1138
for attr in self.runtime_expansions}
701
1140
command = self.checker_command % escaped_attrs
702
1141
except TypeError as error:
703
1142
logger.error('Could not format string "%s"',
704
self.checker_command, exc_info=error)
705
return True # Try again later
1143
self.checker_command,
1145
return True # Try again later
706
1146
self.current_checker_command = command
708
logger.info("Starting checker %r for %s",
710
# We don't need to redirect stdout and stderr, since
711
# in normal mode, that is already done by daemon(),
712
# and in debug mode we don't want to. (Stdin is
713
# always replaced by /dev/null.)
714
self.checker = subprocess.Popen(command,
717
except OSError as error:
718
logger.error("Failed to start subprocess",
720
self.checker_callback_tag = (gobject.child_watch_add
722
self.checker_callback,
724
# The checker may have completed before the gobject
725
# watch was added. Check for this.
726
pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
728
gobject.source_remove(self.checker_callback_tag)
729
self.checker_callback(pid, status, command)
730
# Re-run this periodically if run by gobject.timeout_add
1147
logger.info("Starting checker %r for %s", command,
1149
# We don't need to redirect stdout and stderr, since
1150
# in normal mode, that is already done by daemon(),
1151
# and in debug mode we don't want to. (Stdin is
1152
# always replaced by /dev/null.)
1153
# The exception is when not debugging but nevertheless
1154
# running in the foreground; use the previously
1156
popen_args = {"close_fds": True,
1159
if (not self.server_settings["debug"]
1160
and self.server_settings["foreground"]):
1161
popen_args.update({"stdout": wnull,
1163
pipe = multiprocessing.Pipe(duplex=False)
1164
self.checker = multiprocessing.Process(
1166
args=(pipe[1], subprocess.call, command),
1168
self.checker.start()
1169
self.checker_callback_tag = GLib.io_add_watch(
1170
GLib.IOChannel.unix_new(pipe[0].fileno()),
1171
GLib.PRIORITY_DEFAULT, GLib.IO_IN,
1172
self.checker_callback, pipe[0], command)
1173
# Re-run this periodically if run by GLib.timeout_add
733
1176
def stop_checker(self):
734
1177
"""Force the checker process, if any, to stop."""
735
1178
if self.checker_callback_tag:
736
gobject.source_remove(self.checker_callback_tag)
1179
GLib.source_remove(self.checker_callback_tag)
737
1180
self.checker_callback_tag = None
738
1181
if getattr(self, "checker", None) is None:
740
1183
logger.debug("Stopping checker for %(name)s", vars(self))
742
self.checker.terminate()
744
#if self.checker.poll() is None:
745
# self.checker.kill()
746
except OSError as error:
747
if error.errno != errno.ESRCH: # No such process
1184
self.checker.terminate()
749
1185
self.checker = None
752
def dbus_service_property(dbus_interface, signature="v",
753
access="readwrite", byte_arrays=False):
1188
def dbus_service_property(dbus_interface,
754
1192
"""Decorators for marking methods of a DBusObjectWithProperties to
755
1193
become properties on the D-Bus.
757
1195
The decorated method will be called with no arguments by "Get"
758
1196
and with one argument by "Set".
760
1198
The parameters, where they are supported, are the same as
761
1199
dbus.service.method, except there is only "signature", since the
762
1200
type from Get() and the type sent to Set() is the same.
838
class DBusObjectWithProperties(dbus.service.Object):
839
"""A D-Bus object with properties.
841
Classes inheriting from this can use the dbus_service_property
842
decorator to expose methods as D-Bus properties. It exposes the
843
standard Get(), Set(), and GetAll() methods on the D-Bus.
1283
class DBusObjectWithAnnotations(dbus.service.Object):
1284
"""A D-Bus object with annotations.
1286
Classes inheriting from this can use the dbus_annotations
1287
decorator to add annotations to methods or signals.
847
1291
def _is_dbus_thing(thing):
848
1292
"""Returns a function testing if an attribute is a D-Bus thing
850
1294
If called like _is_dbus_thing("method") it returns a function
851
1295
suitable for use as predicate to inspect.getmembers().
853
return lambda obj: getattr(obj, "_dbus_is_{0}".format(thing),
1297
return lambda obj: getattr(obj, "_dbus_is_{}".format(thing),
856
1300
def _get_all_dbus_things(self, thing):
857
1301
"""Returns a generator of (name, attribute) pairs
859
return ((getattr(athing.__get__(self), "_dbus_name",
1303
return ((getattr(athing.__get__(self), "_dbus_name", name),
861
1304
athing.__get__(self))
862
1305
for cls in self.__class__.__mro__
863
1306
for name, athing in
864
inspect.getmembers(cls,
865
self._is_dbus_thing(thing)))
1307
inspect.getmembers(cls, self._is_dbus_thing(thing)))
1309
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1311
path_keyword='object_path',
1312
connection_keyword='connection')
1313
def Introspect(self, object_path, connection):
1314
"""Overloading of standard D-Bus method.
1316
Inserts annotation tags on methods and signals.
1318
xmlstring = dbus.service.Object.Introspect(self, object_path,
1321
document = xml.dom.minidom.parseString(xmlstring)
1323
for if_tag in document.getElementsByTagName("interface"):
1324
# Add annotation tags
1325
for typ in ("method", "signal"):
1326
for tag in if_tag.getElementsByTagName(typ):
1328
for name, prop in (self.
1329
_get_all_dbus_things(typ)):
1330
if (name == tag.getAttribute("name")
1331
and prop._dbus_interface
1332
== if_tag.getAttribute("name")):
1333
annots.update(getattr(
1334
prop, "_dbus_annotations", {}))
1335
for name, value in annots.items():
1336
ann_tag = document.createElement(
1338
ann_tag.setAttribute("name", name)
1339
ann_tag.setAttribute("value", value)
1340
tag.appendChild(ann_tag)
1341
# Add interface annotation tags
1342
for annotation, value in dict(
1343
itertools.chain.from_iterable(
1344
annotations().items()
1345
for name, annotations
1346
in self._get_all_dbus_things("interface")
1347
if name == if_tag.getAttribute("name")
1349
ann_tag = document.createElement("annotation")
1350
ann_tag.setAttribute("name", annotation)
1351
ann_tag.setAttribute("value", value)
1352
if_tag.appendChild(ann_tag)
1353
# Fix argument name for the Introspect method itself
1354
if (if_tag.getAttribute("name")
1355
== dbus.INTROSPECTABLE_IFACE):
1356
for cn in if_tag.getElementsByTagName("method"):
1357
if cn.getAttribute("name") == "Introspect":
1358
for arg in cn.getElementsByTagName("arg"):
1359
if (arg.getAttribute("direction")
1361
arg.setAttribute("name",
1363
xmlstring = document.toxml("utf-8")
1365
except (AttributeError, xml.dom.DOMException,
1366
xml.parsers.expat.ExpatError) as error:
1367
logger.error("Failed to override Introspection method",
1372
class DBusObjectWithProperties(DBusObjectWithAnnotations):
1373
"""A D-Bus object with properties.
1375
Classes inheriting from this can use the dbus_service_property
1376
decorator to expose methods as D-Bus properties. It exposes the
1377
standard Get(), Set(), and GetAll() methods on the D-Bus.
867
1380
def _get_dbus_property(self, interface_name, property_name):
868
1381
"""Returns a bound method if one exists which is a D-Bus
869
1382
property with the specified name and interface.
871
for cls in self.__class__.__mro__:
872
for name, value in (inspect.getmembers
874
self._is_dbus_thing("property"))):
1384
for cls in self.__class__.__mro__:
1385
for name, value in inspect.getmembers(
1386
cls, self._is_dbus_thing("property")):
875
1387
if (value._dbus_name == property_name
876
1388
and value._dbus_interface == interface_name):
877
1389
return value.__get__(self)
879
1391
# No such property
880
raise DBusPropertyNotFound(self.dbus_object_path + ":"
881
+ interface_name + "."
884
@dbus.service.method(dbus.PROPERTIES_IFACE, in_signature="ss",
1392
raise DBusPropertyNotFound("{}:{}.{}".format(
1393
self.dbus_object_path, interface_name, property_name))
1396
def _get_all_interface_names(cls):
1397
"""Get a sequence of all interfaces supported by an object"""
1398
return (name for name in set(getattr(getattr(x, attr),
1399
"_dbus_interface", None)
1400
for x in (inspect.getmro(cls))
1402
if name is not None)
1404
@dbus.service.method(dbus.PROPERTIES_IFACE,
885
1406
out_signature="v")
886
1407
def Get(self, interface_name, property_name):
887
1408
"""Standard D-Bus property Get() method, see D-Bus standard.
1017
1536
return xmlstring
1540
dbus.OBJECT_MANAGER_IFACE
1541
except AttributeError:
1542
dbus.OBJECT_MANAGER_IFACE = "org.freedesktop.DBus.ObjectManager"
1545
class DBusObjectWithObjectManager(DBusObjectWithAnnotations):
1546
"""A D-Bus object with an ObjectManager.
1548
Classes inheriting from this exposes the standard
1549
GetManagedObjects call and the InterfacesAdded and
1550
InterfacesRemoved signals on the standard
1551
"org.freedesktop.DBus.ObjectManager" interface.
1553
Note: No signals are sent automatically; they must be sent
1556
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
1557
out_signature="a{oa{sa{sv}}}")
1558
def GetManagedObjects(self):
1559
"""This function must be overridden"""
1560
raise NotImplementedError()
1562
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE,
1563
signature="oa{sa{sv}}")
1564
def InterfacesAdded(self, object_path, interfaces_and_properties):
1567
@dbus.service.signal(dbus.OBJECT_MANAGER_IFACE, signature="oas")
1568
def InterfacesRemoved(self, object_path, interfaces):
1571
@dbus.service.method(dbus.INTROSPECTABLE_IFACE,
1573
path_keyword='object_path',
1574
connection_keyword='connection')
1575
def Introspect(self, object_path, connection):
1576
"""Overloading of standard D-Bus method.
1578
Override return argument name of GetManagedObjects to be
1579
"objpath_interfaces_and_properties"
1581
xmlstring = DBusObjectWithAnnotations.Introspect(self,
1585
document = xml.dom.minidom.parseString(xmlstring)
1587
for if_tag in document.getElementsByTagName("interface"):
1588
# Fix argument name for the GetManagedObjects method
1589
if (if_tag.getAttribute("name")
1590
== dbus.OBJECT_MANAGER_IFACE):
1591
for cn in if_tag.getElementsByTagName("method"):
1592
if (cn.getAttribute("name")
1593
== "GetManagedObjects"):
1594
for arg in cn.getElementsByTagName("arg"):
1595
if (arg.getAttribute("direction")
1599
"objpath_interfaces"
1601
xmlstring = document.toxml("utf-8")
1603
except (AttributeError, xml.dom.DOMException,
1604
xml.parsers.expat.ExpatError) as error:
1605
logger.error("Failed to override Introspection method",
1020
1610
def datetime_to_dbus(dt, variant_level=0):
1021
1611
"""Convert a UTC datetime.datetime() to a D-Bus type."""
1023
return dbus.String("", variant_level = variant_level)
1024
return dbus.String(dt.isoformat(),
1025
variant_level=variant_level)
1613
return dbus.String("", variant_level=variant_level)
1614
return dbus.String(dt.isoformat(), variant_level=variant_level)
1028
1617
def alternate_dbus_interfaces(alt_interface_names, deprecate=True):
1381
1978
server to mandos-client
1385
1982
# Rejected - signal
1386
1983
@dbus.service.signal(_interface, signature="s")
1387
1984
def Rejected(self, reason):
1391
1988
# NeedApproval - signal
1392
1989
@dbus.service.signal(_interface, signature="tb")
1393
1990
def NeedApproval(self, timeout, default):
1395
1992
return self.need_approval()
1399
1996
# Approve - method
1400
1997
@dbus.service.method(_interface, in_signature="b")
1401
1998
def Approve(self, value):
1402
1999
self.approve(value)
1404
2001
# CheckedOK - method
1405
2002
@dbus.service.method(_interface)
1406
2003
def CheckedOK(self):
1407
2004
self.checked_ok()
1409
2006
# Enable - method
2007
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1410
2008
@dbus.service.method(_interface)
1411
2009
def Enable(self):
1415
2013
# StartChecker - method
2014
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1416
2015
@dbus.service.method(_interface)
1417
2016
def StartChecker(self):
1419
2018
self.start_checker()
1421
2020
# Disable - method
2021
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1422
2022
@dbus.service.method(_interface)
1423
2023
def Disable(self):
1427
2027
# StopChecker - method
2028
@dbus_annotations({"org.freedesktop.DBus.Deprecated": "true"})
1428
2029
@dbus.service.method(_interface)
1429
2030
def StopChecker(self):
1430
2031
self.stop_checker()
1434
2035
# ApprovalPending - property
1435
2036
@dbus_service_property(_interface, signature="b", access="read")
1436
2037
def ApprovalPending_dbus_property(self):
1437
2038
return dbus.Boolean(bool(self.approvals_pending))
1439
2040
# ApprovedByDefault - property
1440
@dbus_service_property(_interface, signature="b",
2041
@dbus_service_property(_interface,
1441
2043
access="readwrite")
1442
2044
def ApprovedByDefault_dbus_property(self, value=None):
1443
2045
if value is None: # get
1444
2046
return dbus.Boolean(self.approved_by_default)
1445
2047
self.approved_by_default = bool(value)
1447
2049
# ApprovalDelay - property
1448
@dbus_service_property(_interface, signature="t",
2050
@dbus_service_property(_interface,
1449
2052
access="readwrite")
1450
2053
def ApprovalDelay_dbus_property(self, value=None):
1451
2054
if value is None: # get
1452
return dbus.UInt64(self.approval_delay_milliseconds())
2055
return dbus.UInt64(self.approval_delay.total_seconds()
1453
2057
self.approval_delay = datetime.timedelta(0, 0, 0, value)
1455
2059
# ApprovalDuration - property
1456
@dbus_service_property(_interface, signature="t",
2060
@dbus_service_property(_interface,
1457
2062
access="readwrite")
1458
2063
def ApprovalDuration_dbus_property(self, value=None):
1459
2064
if value is None: # get
1460
return dbus.UInt64(timedelta_to_milliseconds(
1461
self.approval_duration))
2065
return dbus.UInt64(self.approval_duration.total_seconds()
1462
2067
self.approval_duration = datetime.timedelta(0, 0, 0, value)
1464
2069
# Name - property
2071
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1465
2072
@dbus_service_property(_interface, signature="s", access="read")
1466
2073
def Name_dbus_property(self):
1467
2074
return dbus.String(self.name)
2078
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
2079
@dbus_service_property(_interface, signature="s", access="read")
2080
def KeyID_dbus_property(self):
2081
return dbus.String(self.key_id)
1469
2083
# Fingerprint - property
2085
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1470
2086
@dbus_service_property(_interface, signature="s", access="read")
1471
2087
def Fingerprint_dbus_property(self):
1472
2088
return dbus.String(self.fingerprint)
1474
2090
# Host - property
1475
@dbus_service_property(_interface, signature="s",
2091
@dbus_service_property(_interface,
1476
2093
access="readwrite")
1477
2094
def Host_dbus_property(self, value=None):
1478
2095
if value is None: # get
1479
2096
return dbus.String(self.host)
1480
self.host = unicode(value)
2097
self.host = str(value)
1482
2099
# Created - property
2101
{"org.freedesktop.DBus.Property.EmitsChangedSignal": "const"})
1483
2102
@dbus_service_property(_interface, signature="s", access="read")
1484
2103
def Created_dbus_property(self):
1485
2104
return datetime_to_dbus(self.created)
1487
2106
# LastEnabled - property
1488
2107
@dbus_service_property(_interface, signature="s", access="read")
1489
2108
def LastEnabled_dbus_property(self):
1490
2109
return datetime_to_dbus(self.last_enabled)
1492
2111
# Enabled - property
1493
@dbus_service_property(_interface, signature="b",
2112
@dbus_service_property(_interface,
1494
2114
access="readwrite")
1495
2115
def Enabled_dbus_property(self, value=None):
1496
2116
if value is None: # get
1544
2165
if (getattr(self, "disable_initiator_tag", None)
1547
gobject.source_remove(self.disable_initiator_tag)
1548
self.disable_initiator_tag = (
1549
gobject.timeout_add(
1550
timedelta_to_milliseconds(self.expires - now),
2168
GLib.source_remove(self.disable_initiator_tag)
2169
self.disable_initiator_tag = GLib.timeout_add(
2170
int((self.expires - now).total_seconds() * 1000),
1553
2173
# ExtendedTimeout - property
1554
@dbus_service_property(_interface, signature="t",
2174
@dbus_service_property(_interface,
1555
2176
access="readwrite")
1556
2177
def ExtendedTimeout_dbus_property(self, value=None):
1557
2178
if value is None: # get
1558
return dbus.UInt64(self.extended_timeout_milliseconds())
2179
return dbus.UInt64(self.extended_timeout.total_seconds()
1559
2181
self.extended_timeout = datetime.timedelta(0, 0, 0, value)
1561
2183
# Interval - property
1562
@dbus_service_property(_interface, signature="t",
2184
@dbus_service_property(_interface,
1563
2186
access="readwrite")
1564
2187
def Interval_dbus_property(self, value=None):
1565
2188
if value is None: # get
1566
return dbus.UInt64(self.interval_milliseconds())
2189
return dbus.UInt64(self.interval.total_seconds() * 1000)
1567
2190
self.interval = datetime.timedelta(0, 0, 0, value)
1568
2191
if getattr(self, "checker_initiator_tag", None) is None:
1570
2193
if self.enabled:
1571
2194
# Reschedule checker run
1572
gobject.source_remove(self.checker_initiator_tag)
1573
self.checker_initiator_tag = (gobject.timeout_add
1574
(value, self.start_checker))
1575
self.start_checker() # Start one now, too
2195
GLib.source_remove(self.checker_initiator_tag)
2196
self.checker_initiator_tag = GLib.timeout_add(
2197
value, self.start_checker)
2198
self.start_checker() # Start one now, too
1577
2200
# Checker - property
1578
@dbus_service_property(_interface, signature="s",
2201
@dbus_service_property(_interface,
1579
2203
access="readwrite")
1580
2204
def Checker_dbus_property(self, value=None):
1581
2205
if value is None: # get
1582
2206
return dbus.String(self.checker_command)
1583
self.checker_command = unicode(value)
2207
self.checker_command = str(value)
1585
2209
# CheckerRunning - property
1586
@dbus_service_property(_interface, signature="b",
2210
@dbus_service_property(_interface,
1587
2212
access="readwrite")
1588
2213
def CheckerRunning_dbus_property(self, value=None):
1589
2214
if value is None: # get
1636
2271
class ClientHandler(socketserver.BaseRequestHandler, object):
1637
2272
"""A class to handle client connections.
1639
2274
Instantiated once for each connection to handle it.
1640
2275
Note: This will run in its own forked process."""
1642
2277
def handle(self):
1643
2278
with contextlib.closing(self.server.child_pipe) as child_pipe:
1644
2279
logger.info("TCP connection from: %s",
1645
unicode(self.client_address))
2280
str(self.client_address))
1646
2281
logger.debug("Pipe FD: %d",
1647
2282
self.server.child_pipe.fileno())
1649
session = (gnutls.connection
1650
.ClientSession(self.request,
1652
.X509Credentials()))
1654
# Note: gnutls.connection.X509Credentials is really a
1655
# generic GnuTLS certificate credentials object so long as
1656
# no X.509 keys are added to it. Therefore, we can use it
1657
# here despite using OpenPGP certificates.
1659
#priority = ':'.join(("NONE", "+VERS-TLS1.1",
1660
# "+AES-256-CBC", "+SHA1",
1661
# "+COMP-NULL", "+CTYPE-OPENPGP",
2284
session = gnutls.ClientSession(self.request)
2286
# priority = ':'.join(("NONE", "+VERS-TLS1.1",
2287
# "+AES-256-CBC", "+SHA1",
2288
# "+COMP-NULL", "+CTYPE-OPENPGP",
1663
2290
# Use a fallback default, since this MUST be set.
1664
2291
priority = self.server.gnutls_priority
1665
2292
if priority is None:
1666
2293
priority = "NORMAL"
1667
(gnutls.library.functions
1668
.gnutls_priority_set_direct(session._c_object,
2294
gnutls.priority_set_direct(session._c_object,
2295
priority.encode("utf-8"),
1671
2298
# Start communication using the Mandos protocol
1672
2299
# Get protocol number
1673
2300
line = self.request.makefile().readline()
1674
2301
logger.debug("Protocol version: %r", line)
1676
2303
if int(line.strip().split()[0]) > 1:
2304
raise RuntimeError(line)
1678
2305
except (ValueError, IndexError, RuntimeError) as error:
1679
2306
logger.error("Unknown protocol version: %s", error)
1682
2309
# Start GnuTLS connection
1684
2311
session.handshake()
1685
except gnutls.errors.GNUTLSError as error:
2312
except gnutls.Error as error:
1686
2313
logger.warning("Handshake failed: %s", error)
1687
2314
# Do not run session.bye() here: the session is not
1688
2315
# established. Just abandon the request.
1690
2317
logger.debug("Handshake succeeded")
1692
2319
approval_required = False
1695
fpr = self.fingerprint(self.peer_certificate
1698
gnutls.errors.GNUTLSError) as error:
1699
logger.warning("Bad certificate: %s", error)
1701
logger.debug("Fingerprint: %s", fpr)
1704
client = ProxyClient(child_pipe, fpr,
2321
if gnutls.has_rawpk:
2324
key_id = self.key_id(
2325
self.peer_certificate(session))
2326
except (TypeError, gnutls.Error) as error:
2327
logger.warning("Bad certificate: %s", error)
2329
logger.debug("Key ID: %s", key_id)
2334
fpr = self.fingerprint(
2335
self.peer_certificate(session))
2336
except (TypeError, gnutls.Error) as error:
2337
logger.warning("Bad certificate: %s", error)
2339
logger.debug("Fingerprint: %s", fpr)
2342
client = ProxyClient(child_pipe, key_id, fpr,
1705
2343
self.client_address)
1706
2344
except KeyError:
1709
2347
if client.approval_delay:
1710
2348
delay = client.approval_delay
1711
2349
client.approvals_pending += 1
1712
2350
approval_required = True
1715
2353
if not client.enabled:
1716
2354
logger.info("Client %s is disabled",
1718
2356
if self.server.use_dbus:
1719
2357
# Emit D-Bus signal
1720
2358
client.Rejected("Disabled")
1723
2361
if client.approved or not client.approval_delay:
1724
#We are approved or approval is disabled
2362
# We are approved or approval is disabled
1726
2364
elif client.approved is None:
1727
2365
logger.info("Client %s needs approval",
1762
2398
delay -= time2 - time
1765
while sent_size < len(client.secret):
1767
sent = session.send(client.secret[sent_size:])
1768
except gnutls.errors.GNUTLSError as error:
1769
logger.warning("gnutls send failed",
1772
logger.debug("Sent: %d, remaining: %d",
1773
sent, len(client.secret)
1774
- (sent_size + sent))
2401
session.send(client.secret)
2402
except gnutls.Error as error:
2403
logger.warning("gnutls send failed",
1777
2407
logger.info("Sending secret to %s", client.name)
1778
2408
# bump the timeout using extended_timeout
1779
2409
client.bump_timeout(client.extended_timeout)
1780
2410
if self.server.use_dbus:
1781
2411
# Emit D-Bus signal
1782
2412
client.GotSecret()
1785
2415
if approval_required:
1786
2416
client.approvals_pending -= 1
1789
except gnutls.errors.GNUTLSError as error:
2419
except gnutls.Error as error:
1790
2420
logger.warning("GnuTLS bye failed",
1791
2421
exc_info=error)
1794
2424
def peer_certificate(session):
1795
"Return the peer's OpenPGP certificate as a bytestring"
1796
# If not an OpenPGP certificate...
1797
if (gnutls.library.functions
1798
.gnutls_certificate_type_get(session._c_object)
1799
!= gnutls.library.constants.GNUTLS_CRT_OPENPGP):
1800
# ...do the normal thing
1801
return session.peer_certificate
2425
"Return the peer's certificate as a bytestring"
2427
cert_type = gnutls.certificate_type_get2(session._c_object,
2429
except AttributeError:
2430
cert_type = gnutls.certificate_type_get(session._c_object)
2431
if gnutls.has_rawpk:
2432
valid_cert_types = frozenset((gnutls.CRT_RAWPK,))
2434
valid_cert_types = frozenset((gnutls.CRT_OPENPGP,))
2435
# If not a valid certificate type...
2436
if cert_type not in valid_cert_types:
2437
logger.info("Cert type %r not in %r", cert_type,
2439
# ...return invalid data
1802
2441
list_size = ctypes.c_uint(1)
1803
cert_list = (gnutls.library.functions
1804
.gnutls_certificate_get_peers
2442
cert_list = (gnutls.certificate_get_peers
1805
2443
(session._c_object, ctypes.byref(list_size)))
1806
2444
if not bool(cert_list) and list_size.value != 0:
1807
raise gnutls.errors.GNUTLSError("error getting peer"
2445
raise gnutls.Error("error getting peer certificate")
1809
2446
if list_size.value == 0:
1811
2448
cert = cert_list[0]
1812
2449
return ctypes.string_at(cert.data, cert.size)
2452
def key_id(certificate):
2453
"Convert a certificate bytestring to a hexdigit key ID"
2454
# New GnuTLS "datum" with the public key
2455
datum = gnutls.datum_t(
2456
ctypes.cast(ctypes.c_char_p(certificate),
2457
ctypes.POINTER(ctypes.c_ubyte)),
2458
ctypes.c_uint(len(certificate)))
2459
# XXX all these need to be created in the gnutls "module"
2460
# New empty GnuTLS certificate
2461
pubkey = gnutls.pubkey_t()
2462
gnutls.pubkey_init(ctypes.byref(pubkey))
2463
# Import the raw public key into the certificate
2464
gnutls.pubkey_import(pubkey,
2465
ctypes.byref(datum),
2466
gnutls.X509_FMT_DER)
2467
# New buffer for the key ID
2468
buf = ctypes.create_string_buffer(32)
2469
buf_len = ctypes.c_size_t(len(buf))
2470
# Get the key ID from the raw public key into the buffer
2471
gnutls.pubkey_get_key_id(pubkey,
2472
gnutls.KEYID_USE_SHA256,
2473
ctypes.cast(ctypes.byref(buf),
2474
ctypes.POINTER(ctypes.c_ubyte)),
2475
ctypes.byref(buf_len))
2476
# Deinit the certificate
2477
gnutls.pubkey_deinit(pubkey)
2479
# Convert the buffer to a Python bytestring
2480
key_id = ctypes.string_at(buf, buf_len.value)
2481
# Convert the bytestring to hexadecimal notation
2482
hex_key_id = binascii.hexlify(key_id).upper()
1815
2486
def fingerprint(openpgp):
1816
2487
"Convert an OpenPGP bytestring to a hexdigit fingerprint"
1817
2488
# New GnuTLS "datum" with the OpenPGP public key
1818
datum = (gnutls.library.types
1819
.gnutls_datum_t(ctypes.cast(ctypes.c_char_p(openpgp),
1822
ctypes.c_uint(len(openpgp))))
2489
datum = gnutls.datum_t(
2490
ctypes.cast(ctypes.c_char_p(openpgp),
2491
ctypes.POINTER(ctypes.c_ubyte)),
2492
ctypes.c_uint(len(openpgp)))
1823
2493
# New empty GnuTLS certificate
1824
crt = gnutls.library.types.gnutls_openpgp_crt_t()
1825
(gnutls.library.functions
1826
.gnutls_openpgp_crt_init(ctypes.byref(crt)))
2494
crt = gnutls.openpgp_crt_t()
2495
gnutls.openpgp_crt_init(ctypes.byref(crt))
1827
2496
# Import the OpenPGP public key into the certificate
1828
(gnutls.library.functions
1829
.gnutls_openpgp_crt_import(crt, ctypes.byref(datum),
1830
gnutls.library.constants
1831
.GNUTLS_OPENPGP_FMT_RAW))
2497
gnutls.openpgp_crt_import(crt, ctypes.byref(datum),
2498
gnutls.OPENPGP_FMT_RAW)
1832
2499
# Verify the self signature in the key
1833
2500
crtverify = ctypes.c_uint()
1834
(gnutls.library.functions
1835
.gnutls_openpgp_crt_verify_self(crt, 0,
1836
ctypes.byref(crtverify)))
2501
gnutls.openpgp_crt_verify_self(crt, 0,
2502
ctypes.byref(crtverify))
1837
2503
if crtverify.value != 0:
1838
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
1839
raise (gnutls.errors.CertificateSecurityError
2504
gnutls.openpgp_crt_deinit(crt)
2505
raise gnutls.CertificateSecurityError(code
1841
2507
# New buffer for the fingerprint
1842
2508
buf = ctypes.create_string_buffer(20)
1843
2509
buf_len = ctypes.c_size_t()
1844
2510
# Get the fingerprint from the certificate into the buffer
1845
(gnutls.library.functions
1846
.gnutls_openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
1847
ctypes.byref(buf_len)))
2511
gnutls.openpgp_crt_get_fingerprint(crt, ctypes.byref(buf),
2512
ctypes.byref(buf_len))
1848
2513
# Deinit the certificate
1849
gnutls.library.functions.gnutls_openpgp_crt_deinit(crt)
2514
gnutls.openpgp_crt_deinit(crt)
1850
2515
# Convert the buffer to a Python bytestring
1851
2516
fpr = ctypes.string_at(buf, buf_len.value)
1852
2517
# Convert the bytestring to hexadecimal notation
1935
2606
# socket_wrapper(), if socketfd was set.
1936
2607
socketserver.TCPServer.__init__(self, server_address,
1937
2608
RequestHandlerClass)
1939
2610
def server_bind(self):
1940
2611
"""This overrides the normal server_bind() function
1941
2612
to bind to an interface if one was specified, and also NOT to
1942
2613
bind to an address or port if they were not specified."""
2614
global SO_BINDTODEVICE
1943
2615
if self.interface is not None:
1944
2616
if SO_BINDTODEVICE is None:
1945
logger.error("SO_BINDTODEVICE does not exist;"
1946
" cannot bind to interface %s",
1950
self.socket.setsockopt(socket.SOL_SOCKET,
1952
str(self.interface + '\0'))
1953
except socket.error as error:
1954
if error.errno == errno.EPERM:
1955
logger.error("No permission to bind to"
1956
" interface %s", self.interface)
1957
elif error.errno == errno.ENOPROTOOPT:
1958
logger.error("SO_BINDTODEVICE not available;"
1959
" cannot bind to interface %s",
1961
elif error.errno == errno.ENODEV:
1962
logger.error("Interface %s does not exist,"
1963
" cannot bind", self.interface)
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)
1966
2638
# Only bind(2) the socket if we really need to.
1967
2639
if self.server_address[0] or self.server_address[1]:
2640
if self.server_address[1]:
2641
self.allow_reuse_address = True
1968
2642
if not self.server_address[0]:
1969
2643
if self.address_family == socket.AF_INET6:
1970
any_address = "::" # in6addr_any
2644
any_address = "::" # in6addr_any
1972
any_address = socket.INADDR_ANY
2646
any_address = "0.0.0.0" # INADDR_ANY
1973
2647
self.server_address = (any_address,
1974
2648
self.server_address[1])
1975
2649
elif not self.server_address[1]:
1976
self.server_address = (self.server_address[0],
2650
self.server_address = (self.server_address[0], 0)
1978
2651
# if self.interface:
1979
2652
# self.server_address = (self.server_address[0],
2005
2683
self.gnutls_priority = gnutls_priority
2006
2684
IPv6_TCPServer.__init__(self, server_address,
2007
2685
RequestHandlerClass,
2008
interface = interface,
2009
use_ipv6 = use_ipv6,
2010
socketfd = socketfd)
2686
interface=interface,
2011
2690
def server_activate(self):
2012
2691
if self.enabled:
2013
2692
return socketserver.TCPServer.server_activate(self)
2015
2694
def enable(self):
2016
2695
self.enabled = True
2018
2697
def add_pipe(self, parent_pipe, proc):
2019
2698
# Call "handle_ipc" for both data and EOF events
2020
gobject.io_add_watch(parent_pipe.fileno(),
2021
gobject.IO_IN | gobject.IO_HUP,
2022
functools.partial(self.handle_ipc,
2027
def handle_ipc(self, source, condition, parent_pipe=None,
2028
proc = None, client_object=None):
2700
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2701
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2702
functools.partial(self.handle_ipc,
2703
parent_pipe=parent_pipe,
2706
def handle_ipc(self, source, condition,
2709
client_object=None):
2029
2710
# error, or the other end of multiprocessing.Pipe has closed
2030
if condition & (gobject.IO_ERR | gobject.IO_HUP):
2711
if condition & (GLib.IO_ERR | GLib.IO_HUP):
2031
2712
# Wait for other process to exit
2035
2716
# Read a request from the child
2036
2717
request = parent_pipe.recv()
2037
2718
command = request[0]
2039
2720
if command == 'init':
2041
address = request[2]
2043
for c in self.clients.itervalues():
2044
if c.fingerprint == fpr:
2721
key_id = request[1].decode("ascii")
2722
fpr = request[2].decode("ascii")
2723
address = request[3]
2725
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:
2048
logger.info("Client not found for fingerprint: %s, ad"
2049
"dress: %s", fpr, address)
2735
logger.info("Client not found for key ID: %s, address"
2736
": %s", key_id or fpr, address)
2050
2737
if self.use_dbus:
2051
2738
# Emit D-Bus signal
2052
mandos_dbus_service.ClientNotFound(fpr,
2739
mandos_dbus_service.ClientNotFound(key_id or fpr,
2054
2741
parent_pipe.send(False)
2057
gobject.io_add_watch(parent_pipe.fileno(),
2058
gobject.IO_IN | gobject.IO_HUP,
2059
functools.partial(self.handle_ipc,
2745
GLib.IOChannel.unix_new(parent_pipe.fileno()),
2746
GLib.PRIORITY_DEFAULT, GLib.IO_IN | GLib.IO_HUP,
2747
functools.partial(self.handle_ipc,
2748
parent_pipe=parent_pipe,
2750
client_object=client))
2065
2751
parent_pipe.send(True)
2066
2752
# remove the old hook in favor of the new above hook on
2070
2756
funcname = request[1]
2071
2757
args = request[2]
2072
2758
kwargs = request[3]
2074
2760
parent_pipe.send(('data', getattr(client_object,
2075
2761
funcname)(*args,
2078
2764
if command == 'getattr':
2079
2765
attrname = request[1]
2080
if callable(client_object.__getattribute__(attrname)):
2081
parent_pipe.send(('function',))
2766
if isinstance(client_object.__getattribute__(attrname),
2767
collections.abc.Callable):
2768
parent_pipe.send(('function', ))
2083
parent_pipe.send(('data', client_object
2084
.__getattribute__(attrname)))
2771
'data', client_object.__getattribute__(attrname)))
2086
2773
if command == 'setattr':
2087
2774
attrname = request[1]
2088
2775
value = request[2]
2089
2776
setattr(client_object, attrname, value)
2094
2781
def rfc3339_duration_to_delta(duration):
2095
2782
"""Parse an RFC 3339 "duration" and return a datetime.timedelta
2097
>>> rfc3339_duration_to_delta("P7D")
2098
datetime.timedelta(7)
2099
>>> rfc3339_duration_to_delta("PT60S")
2100
datetime.timedelta(0, 60)
2101
>>> rfc3339_duration_to_delta("PT60M")
2102
datetime.timedelta(0, 3600)
2103
>>> rfc3339_duration_to_delta("PT24H")
2104
datetime.timedelta(1)
2105
>>> rfc3339_duration_to_delta("P1W")
2106
datetime.timedelta(7)
2107
>>> rfc3339_duration_to_delta("PT5M30S")
2108
datetime.timedelta(0, 330)
2109
>>> rfc3339_duration_to_delta("P1DT3M20S")
2110
datetime.timedelta(1, 200)
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)
2113
2800
# Parsing an RFC 3339 duration with regular expressions is not
2114
2801
# possible - there would have to be multiple places for the same
2115
2802
# values, like seconds. The current code, while more esoteric, is
2116
2803
# cleaner without depending on a parsing library. If Python had a
2117
2804
# built-in library for parsing we would use it, but we'd like to
2118
2805
# avoid excessive use of external libraries.
2120
2807
# New type for defining tokens, syntax, and semantics all-in-one
2121
Token = collections.namedtuple("Token",
2122
("regexp", # To match token; if
2123
# "value" is not None,
2124
# must have a "group"
2126
"value", # datetime.timedelta or
2128
"followers")) # Tokens valid after
2808
Token = collections.namedtuple("Token", (
2809
"regexp", # To match token; if "value" is not None, must have
2810
# a "group" containing digits
2811
"value", # datetime.timedelta or None
2812
"followers")) # Tokens valid after this token
2130
2813
# RFC 3339 "duration" tokens, syntax, and semantics; taken from
2131
2814
# the "duration" ABNF definition in RFC 3339, Appendix A.
2132
2815
token_end = Token(re.compile(r"$"), None, frozenset())
2133
2816
token_second = Token(re.compile(r"(\d+)S"),
2134
2817
datetime.timedelta(seconds=1),
2135
frozenset((token_end,)))
2818
frozenset((token_end, )))
2136
2819
token_minute = Token(re.compile(r"(\d+)M"),
2137
2820
datetime.timedelta(minutes=1),
2138
2821
frozenset((token_second, token_end)))
2294
2980
parser.add_argument("--no-dbus", action="store_false",
2295
2981
dest="use_dbus", help="Do not provide D-Bus"
2296
" system bus interface")
2982
" system bus interface", default=None)
2297
2983
parser.add_argument("--no-ipv6", action="store_false",
2298
dest="use_ipv6", help="Do not use IPv6")
2984
dest="use_ipv6", help="Do not use IPv6",
2299
2986
parser.add_argument("--no-restore", action="store_false",
2300
2987
dest="restore", help="Do not restore stored"
2988
" state", default=None)
2302
2989
parser.add_argument("--socket", type=int,
2303
2990
help="Specify a file descriptor to a network"
2304
2991
" socket to use instead of creating one")
2305
2992
parser.add_argument("--statedir", metavar="DIR",
2306
2993
help="Directory to save/restore state in")
2307
2994
parser.add_argument("--foreground", action="store_true",
2308
help="Run in foreground")
2995
help="Run in foreground", default=None)
2996
parser.add_argument("--no-zeroconf", action="store_false",
2997
dest="zeroconf", help="Do not use Zeroconf",
2310
3000
options = parser.parse_args()
2317
3002
# Default values for config file for server-global settings
2318
server_defaults = { "interface": "",
2323
"SECURE256:!CTYPE-X.509:+CTYPE-OPENPGP",
2324
"servicename": "Mandos",
2330
"statedir": "/var/lib/mandos",
2331
"foreground": "False",
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",
2334
3026
# Parse config file for server-global settings
2335
server_config = configparser.SafeConfigParser(server_defaults)
3027
server_config = configparser.ConfigParser(server_defaults)
2336
3028
del server_defaults
2337
server_config.read(os.path.join(options.configdir,
2339
# Convert the SafeConfigParser object to a dict
3029
server_config.read(os.path.join(options.configdir, "mandos.conf"))
3030
# Convert the ConfigParser object to a dict
2340
3031
server_settings = server_config.defaults()
2341
3032
# Use the appropriate methods on the non-string config options
2342
for option in ("debug", "use_dbus", "use_ipv6", "foreground"):
3033
for option in ("debug", "use_dbus", "use_ipv6", "restore",
3034
"foreground", "zeroconf"):
2343
3035
server_settings[option] = server_config.getboolean("DEFAULT",
2345
3037
if server_settings["port"]:
3153
logger.debug("Did setuid/setgid to {}:{}".format(uid,
2447
3155
except OSError as error:
3156
logger.warning("Failed to setuid/setgid to {}:{}: {}"
3157
.format(uid, gid, os.strerror(error.errno)))
2448
3158
if error.errno != errno.EPERM:
2452
3162
# Enable all possible GnuTLS debugging
2454
3164
# "Use a log level over 10 to enable all debugging options."
2455
3165
# - GnuTLS manual
2456
gnutls.library.functions.gnutls_global_set_log_level(11)
2458
@gnutls.library.types.gnutls_log_func
3166
gnutls.global_set_log_level(11)
2459
3169
def debug_gnutls(level, string):
2460
3170
logger.debug("GnuTLS: %s", string[:-1])
2462
(gnutls.library.functions
2463
.gnutls_global_set_log_function(debug_gnutls))
3172
gnutls.global_set_log_function(debug_gnutls)
2465
3174
# Redirect stdin so all checkers get /dev/null
2466
3175
null = os.open(os.devnull, os.O_NOCTTY | os.O_RDWR)
2467
3176
os.dup2(null, sys.stdin.fileno())
2471
3180
# Need to fork before connecting to D-Bus
2472
3181
if not foreground:
2473
3182
# Close all input and output, do double fork, etc.
2476
# multiprocessing will use threads, so before we use gobject we
2477
# need to inform gobject that threads will be used.
2478
gobject.threads_init()
3185
if gi.version_info < (3, 10, 2):
3186
# multiprocessing will use threads, so before we use GLib we
3187
# need to inform GLib that threads will be used.
2480
3190
global main_loop
2481
3191
# From the Avahi example code
2482
3192
DBusGMainLoop(set_as_default=True)
2483
main_loop = gobject.MainLoop()
3193
main_loop = GLib.MainLoop()
2484
3194
bus = dbus.SystemBus()
2485
3195
# End of Avahi example code
2488
3198
bus_name = dbus.service.BusName("se.recompile.Mandos",
2489
bus, do_not_queue=True)
2490
old_bus_name = (dbus.service.BusName
2491
("se.bsnet.fukt.Mandos", bus,
2493
except dbus.exceptions.NameExistsException as e:
3201
old_bus_name = dbus.service.BusName(
3202
"se.bsnet.fukt.Mandos", bus,
3204
except dbus.exceptions.DBusException as e:
2494
3205
logger.error("Disabling D-Bus:", exc_info=e)
2495
3206
use_dbus = False
2496
3207
server_settings["use_dbus"] = False
2497
3208
tcp_server.use_dbus = False
2498
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
2499
service = AvahiServiceToSyslog(name =
2500
server_settings["servicename"],
2501
servicetype = "_mandos._tcp",
2502
protocol = protocol, bus = bus)
2503
if server_settings["interface"]:
2504
service.interface = (if_nametoindex
2505
(str(server_settings["interface"])))
3210
protocol = avahi.PROTO_INET6 if use_ipv6 else avahi.PROTO_INET
3211
service = AvahiServiceToSyslog(
3212
name=server_settings["servicename"],
3213
servicetype="_mandos._tcp",
3216
if server_settings["interface"]:
3217
service.interface = if_nametoindex(
3218
server_settings["interface"].encode("utf-8"))
2507
3220
global multiprocessing_manager
2508
3221
multiprocessing_manager = multiprocessing.Manager()
2510
3223
client_class = Client
2512
client_class = functools.partial(ClientDBus, bus = bus)
3225
client_class = functools.partial(ClientDBus, bus=bus)
2514
3227
client_settings = Client.config_parser(client_config)
2515
3228
old_client_settings = {}
2516
3229
clients_data = {}
3231
# This is used to redirect stdout and stderr for checker processes
3233
wnull = open(os.devnull, "w") # A writable /dev/null
3234
# Only used if server is running in foreground but not in debug
3236
if debug or not foreground:
2518
3239
# Get client data and settings from last running state.
2519
3240
if server_settings["restore"]:
2521
3242
with open(stored_state_path, "rb") as stored_state:
2522
clients_data, old_client_settings = (pickle.load
3243
if sys.version_info.major == 2:
3244
clients_data, old_client_settings = pickle.load(
3247
bytes_clients_data, bytes_old_client_settings = (
3248
pickle.load(stored_state, encoding="bytes"))
3249
# Fix bytes to strings
3252
clients_data = {(key.decode("utf-8")
3253
if isinstance(key, bytes)
3256
bytes_clients_data.items()}
3257
del bytes_clients_data
3258
for key in clients_data:
3259
value = {(k.decode("utf-8")
3260
if isinstance(k, bytes) else k): v
3262
clients_data[key].items()}
3263
clients_data[key] = value
3265
value["client_structure"] = [
3267
if isinstance(s, bytes)
3269
value["client_structure"]]
3270
# .name, .host, and .checker_command
3271
for k in ("name", "host", "checker_command"):
3272
if isinstance(value[k], bytes):
3273
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
3280
old_client_settings = {
3281
(key.decode("utf-8")
3282
if isinstance(key, bytes)
3285
bytes_old_client_settings.items()}
3286
del bytes_old_client_settings
3287
# .host and .checker_command
3288
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]
2524
3293
os.remove(stored_state_path)
2525
3294
except IOError as e:
2526
3295
if e.errno == errno.ENOENT:
2527
logger.warning("Could not load persistent state: {0}"
2528
.format(os.strerror(e.errno)))
3296
logger.warning("Could not load persistent state:"
3297
" {}".format(os.strerror(e.errno)))
2530
3299
logger.critical("Could not load persistent state:",
2533
3302
except EOFError as e:
2534
3303
logger.warning("Could not load persistent state: "
2535
"EOFError:", exc_info=e)
2537
3307
with PGPEngine() as pgp:
2538
for client_name, client in clients_data.iteritems():
3308
for client_name, client in clients_data.items():
3309
# Skip removed clients
3310
if client_name not in client_settings:
2539
3313
# Decide which value to use after restoring saved state.
2540
3314
# We have three different values: Old config file,
2541
3315
# new config file, and saved state.
2599
3373
for client_name in (set(client_settings)
2600
3374
- set(old_client_settings)):
2601
3375
clients_data[client_name] = client_settings[client_name]
2603
3377
# Create all client objects
2604
for client_name, client in clients_data.iteritems():
3378
for client_name, client in clients_data.items():
2605
3379
tcp_server.clients[client_name] = client_class(
2606
name = client_name, settings = client)
3382
server_settings=server_settings)
2608
3384
if not tcp_server.clients:
2609
3385
logger.warning("No clients defined")
2611
3387
if not foreground:
2612
3388
if pidfile is not None:
2616
pidfile.write(str(pid) + "\n".encode("utf-8"))
3392
print(pid, file=pidfile)
2617
3393
except IOError:
2618
3394
logger.error("Could not write to file %r with PID %d",
2619
3395
pidfilename, pid)
2621
3397
del pidfilename
2623
signal.signal(signal.SIGHUP, lambda signum, frame: sys.exit())
2624
signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit())
3399
for termsig in (signal.SIGHUP, signal.SIGTERM):
3400
GLib.unix_signal_add(GLib.PRIORITY_HIGH, termsig,
3401
lambda: main_loop.quit() and False)
2627
@alternate_dbus_interfaces({"se.recompile.Mandos":
2628
"se.bsnet.fukt.Mandos"})
2629
class MandosDBusService(DBusObjectWithProperties):
3405
@alternate_dbus_interfaces(
3406
{"se.recompile.Mandos": "se.bsnet.fukt.Mandos"})
3407
class MandosDBusService(DBusObjectWithObjectManager):
2630
3408
"""A D-Bus proxy object"""
2631
3410
def __init__(self):
2632
3411
dbus.service.Object.__init__(self, bus, "/")
2633
3413
_interface = "se.recompile.Mandos"
2635
@dbus_interface_annotations(_interface)
2637
return { "org.freedesktop.DBus.Property"
2638
".EmitsChangedSignal":
2641
3415
@dbus.service.signal(_interface, signature="o")
2642
3416
def ClientAdded(self, objpath):
2646
3420
@dbus.service.signal(_interface, signature="ss")
2647
def ClientNotFound(self, fingerprint, address):
3421
def ClientNotFound(self, key_id, address):
3425
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2651
3427
@dbus.service.signal(_interface, signature="os")
2652
3428
def ClientRemoved(self, objpath, name):
3432
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2656
3434
@dbus.service.method(_interface, out_signature="ao")
2657
3435
def GetAllClients(self):
2659
return dbus.Array(c.dbus_object_path
2661
tcp_server.clients.itervalues())
3437
return dbus.Array(c.dbus_object_path for c in
3438
tcp_server.clients.values())
3440
@dbus_annotations({"org.freedesktop.DBus.Deprecated":
2663
3442
@dbus.service.method(_interface,
2664
3443
out_signature="a{oa{sv}}")
2665
3444
def GetAllClientsWithProperties(self):
2667
3446
return dbus.Dictionary(
2668
((c.dbus_object_path, c.GetAll(""))
2669
for c in tcp_server.clients.itervalues()),
3447
{c.dbus_object_path: c.GetAll(
3448
"se.recompile.Mandos.Client")
3449
for c in tcp_server.clients.values()},
2670
3450
signature="oa{sv}")
2672
3452
@dbus.service.method(_interface, in_signature="o")
2673
3453
def RemoveClient(self, object_path):
2675
for c in tcp_server.clients.itervalues():
3455
for c in tcp_server.clients.values():
2676
3456
if c.dbus_object_path == object_path:
2677
3457
del tcp_server.clients[c.name]
2678
3458
c.remove_from_connection()
2679
# Don't signal anything except ClientRemoved
3459
# Don't signal the disabling
2680
3460
c.disable(quiet=True)
2682
self.ClientRemoved(object_path, c.name)
3461
# Emit D-Bus signal for removal
3462
self.client_removed_signal(c)
2684
3464
raise KeyError(object_path)
3468
@dbus.service.method(dbus.OBJECT_MANAGER_IFACE,
3469
out_signature="a{oa{sa{sv}}}")
3470
def GetManagedObjects(self):
3472
return dbus.Dictionary(
3473
{client.dbus_object_path:
3475
{interface: client.GetAll(interface)
3477
client._get_all_interface_names()})
3478
for client in tcp_server.clients.values()})
3480
def client_added_signal(self, client):
3481
"""Send the new standard signal and the old signal"""
3483
# New standard signal
3484
self.InterfacesAdded(
3485
client.dbus_object_path,
3487
{interface: client.GetAll(interface)
3489
client._get_all_interface_names()}))
3491
self.ClientAdded(client.dbus_object_path)
3493
def client_removed_signal(self, client):
3494
"""Send the new standard signal and the old signal"""
3496
# New standard signal
3497
self.InterfacesRemoved(
3498
client.dbus_object_path,
3499
client._get_all_interface_names())
3501
self.ClientRemoved(client.dbus_object_path,
2688
3504
mandos_dbus_service = MandosDBusService()
3506
# Save modules to variables to exempt the modules from being
3507
# unloaded before the function registered with atexit() is run.
3508
mp = multiprocessing
2691
3512
"Cleanup function; run on exit"
2694
multiprocessing.active_children()
3516
mp.active_children()
2695
3518
if not (tcp_server.clients or client_settings):
2698
3521
# Store client before exiting. Secrets are encrypted with key
2699
3522
# based on what config file has. If config file is
2700
3523
# removed/edited, old secret will thus be unrecovable.
2702
3525
with PGPEngine() as pgp:
2703
for client in tcp_server.clients.itervalues():
3526
for client in tcp_server.clients.values():
2704
3527
key = client_settings[client.name]["secret"]
2705
3528
client.encrypted_secret = pgp.encrypt(client.secret,
2707
3530
client_dict = {}
2709
3532
# A list of attributes that can not be pickled
2711
exclude = set(("bus", "changedstate", "secret",
2713
for name, typ in (inspect.getmembers
2714
(dbus.service.Object)):
3534
exclude = {"bus", "changedstate", "secret",
3535
"checker", "server_settings"}
3536
for name, typ in inspect.getmembers(dbus.service
2715
3538
exclude.add(name)
2717
3540
client_dict["encrypted_secret"] = (client
2718
3541
.encrypted_secret)
2719
3542
for attr in client.client_structure:
2720
3543
if attr not in exclude:
2721
3544
client_dict[attr] = getattr(client, attr)
2723
3546
clients[client.name] = client_dict
2724
3547
del client_settings[client.name]["secret"]
2727
with (tempfile.NamedTemporaryFile
2728
(mode='wb', suffix=".pickle", prefix='clients-',
2729
dir=os.path.dirname(stored_state_path),
2730
delete=False)) as stored_state:
2731
pickle.dump((clients, client_settings), stored_state)
2732
tempname=stored_state.name
3550
with tempfile.NamedTemporaryFile(
3554
dir=os.path.dirname(stored_state_path),
3555
delete=False) as stored_state:
3556
pickle.dump((clients, client_settings), stored_state,
3558
tempname = stored_state.name
2733
3559
os.rename(tempname, stored_state_path)
2734
3560
except (IOError, OSError) as e: