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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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# Copyright © 2008-2014 Teddy Hogeborn
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# Copyright © 2008-2014 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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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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passphrase = self.password_encode(password)
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runtime_expansions: Allowed attributes for runtime expansion.
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expires: datetime.datetime(); time (UTC) when a client will be
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disabled, or None
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server_settings: The server_settings dict from main()
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runtime_expansions = ("approval_delay", "approval_duration",
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def __init__(self, settings, name = None):
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def __init__(self, settings, name = None, server_settings=None):
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if server_settings is None:
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self.server_settings = server_settings
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# adding all client settings
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for setting, value in settings.iteritems():
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setattr(self, setting, value)
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# If a checker exists, make sure it is not a zombie
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pid, status = os.waitpid(self.checker.pid, os.WNOHANG)
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except (AttributeError, OSError) as error:
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if (isinstance(error, OSError)
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and error.errno != errno.ECHILD):
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except AttributeError:
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except OSError as error:
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if error.errno != errno.ECHILD:
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logger.warning("Checker was a zombie")
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# in normal mode, that is already done by daemon(),
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# and in debug mode we don't want to. (Stdin is
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# always replaced by /dev/null.)
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# The exception is when not debugging but nevertheless
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# running in the foreground; use the previously
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if (not self.server_settings["debug"]
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and self.server_settings["foreground"]):
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popen_args.update({"stdout": wnull,
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self.checker = subprocess.Popen(command,
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except OSError as error:
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logger.error("Failed to start subprocess",
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# The byte_arrays option is not supported yet on
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# signatures other than "ay".
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if prop._dbus_signature != "ay":
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raise ValueError("Byte arrays not supported for non-"
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"'ay' signature {0!r}"
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.format(prop._dbus_signature))
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value = dbus.ByteArray(b''.join(chr(byte)
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for byte in value))
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logger.debug("Protocol version: %r", line)
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if int(line.strip().split()[0]) > 1:
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raise RuntimeError(line)
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except (ValueError, IndexError, RuntimeError) as error:
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logger.error("Unknown protocol version: %s", error)
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def add_pipe(self, parent_pipe, proc):
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"""Dummy function; override as necessary"""
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raise NotImplementedError
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raise NotImplementedError()
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class IPv6_TCPServer(MultiprocessingMixInWithPipe,
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if self.address_family == socket.AF_INET6:
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any_address = "::" # in6addr_any
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any_address = socket.INADDR_ANY
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any_address = "0.0.0.0" # INADDR_ANY
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self.server_address = (any_address,
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self.server_address[1])
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elif not self.server_address[1]:
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help="Run self-test")
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parser.add_argument("--debug", action="store_true",
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help="Debug mode; run in foreground and log"
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" to terminal", default=None)
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parser.add_argument("--debuglevel", metavar="LEVEL",
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help="Debug level for stdout output")
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parser.add_argument("--priority", help="GnuTLS"
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parser.add_argument("--no-dbus", action="store_false",
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dest="use_dbus", help="Do not provide D-Bus"
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" system bus interface")
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" system bus interface", default=None)
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parser.add_argument("--no-ipv6", action="store_false",
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dest="use_ipv6", help="Do not use IPv6")
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dest="use_ipv6", help="Do not use IPv6",
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parser.add_argument("--no-restore", action="store_false",
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dest="restore", help="Do not restore stored"
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" state", default=None)
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parser.add_argument("--socket", type=int,
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help="Specify a file descriptor to a network"
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" socket to use instead of creating one")
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parser.add_argument("--statedir", metavar="DIR",
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help="Directory to save/restore state in")
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parser.add_argument("--foreground", action="store_true",
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help="Run in foreground")
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help="Run in foreground", default=None)
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options = parser.parse_args()
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if options.check:
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fail_count, test_count = doctest.testmod()
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sys.exit(os.EX_OK if fail_count == 0 else 1)
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# Default values for config file for server-global settings
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server_defaults = { "interface": "",
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for option in server_settings.keys():
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if type(server_settings[option]) is str:
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server_settings[option] = unicode(server_settings[option])
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# Force all boolean options to be boolean
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for option in ("debug", "use_dbus", "use_ipv6", "restore",
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server_settings[option] = bool(server_settings[option])
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# Debug implies foreground
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if server_settings["debug"]:
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server_settings["foreground"] = True
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socketfd=(server_settings["socket"]
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if not foreground:
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pidfilename = "/var/run/mandos.pid"
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pidfilename = "/run/mandos.pid"
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if not os.path.isdir("/run/."):
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pidfilename = "/var/run/mandos.pid"
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pidfile = open(pidfilename, "w")
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old_client_settings = {}
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clients_data = {}
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# This is used to redirect stdout and stderr for checker processes
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wnull = open(os.devnull, "w") # A writable /dev/null
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# Only used if server is running in foreground but not in debug
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if debug or not foreground:
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# Get client data and settings from last running state.
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if server_settings["restore"]:
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with PGPEngine() as pgp:
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for client_name, client in clients_data.iteritems():
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# Skip removed clients
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if client_name not in client_settings:
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# Decide which value to use after restoring saved state.
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# We have three different values: Old config file,
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# new config file, and saved state.
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# Create all client objects
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for client_name, client in clients_data.iteritems():
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tcp_server.clients[client_name] = client_class(
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name = client_name, settings = client)
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name = client_name, settings = client,
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server_settings = server_settings)
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if not tcp_server.clients:
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logger.warning("No clients defined")
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# A list of attributes that can not be pickled
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exclude = set(("bus", "changedstate", "secret",
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"checker", "server_settings"))
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for name, typ in (inspect.getmembers
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(dbus.service.Object)):
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exclude.add(name)