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# Source Generated with Decompyle++ # File: in.pyc (Python 2.6) __all__ = ('Connection', 'SignalMatch') __docformat__ = 'reStructuredText' import logging try: import thread except ImportError: import dummy_thread as thread import weakref from _dbus_bindings import Connection as _Connection, LOCAL_PATH, LOCAL_IFACE, validate_interface_name, validate_member_name, validate_bus_name, validate_object_path, validate_error_name, UTF8String from dbus.exceptions import DBusException from dbus.lowlevel import ErrorMessage, MethodCallMessage, SignalMessage, MethodReturnMessage, HANDLER_RESULT_NOT_YET_HANDLED from dbus.proxies import ProxyObject _logger = logging.getLogger('dbus.connection') def _noop(*args, **kwargs): pass class SignalMatch(object): __slots__ = ('_sender_name_owner', '_member', '_interface', '_sender', '_path', '_handler', '_args_match', '_rule', '_utf8_strings', '_byte_arrays', '_conn_weakref', '_destination_keyword', '_interface_keyword', '_message_keyword', '_member_keyword', '_sender_keyword', '_path_keyword', '_int_args_match') def __init__(self, conn, sender, object_path, dbus_interface, member, handler, utf8_strings = False, byte_arrays = False, sender_keyword = None, path_keyword = None, interface_keyword = None, member_keyword = None, message_keyword = None, destination_keyword = None, **kwargs): if member is not None: validate_member_name(member) if dbus_interface is not None: validate_interface_name(dbus_interface) if sender is not None: validate_bus_name(sender) if object_path is not None: validate_object_path(object_path) self._rule = None self._conn_weakref = weakref.ref(conn) self._sender = sender self._interface = dbus_interface self._member = member self._path = object_path self._handler = handler self._sender_name_owner = sender self._utf8_strings = utf8_strings self._byte_arrays = byte_arrays self._sender_keyword = sender_keyword self._path_keyword = path_keyword self._member_keyword = member_keyword self._interface_keyword = interface_keyword self._message_keyword = message_keyword self._destination_keyword = destination_keyword self._args_match = kwargs if not kwargs: self._int_args_match = None else: self._int_args_match = { } for kwarg in kwargs: if not kwarg.startswith('arg'): raise TypeError('SignalMatch: unknown keyword argument %s' % kwarg) kwarg.startswith('arg') try: index = int(kwarg[3:]) except ValueError: raise TypeError('SignalMatch: unknown keyword argument %s' % kwarg) if index < 0 or index > 63: raise TypeError('SignalMatch: arg match index must be in range(64), not %d' % index) index > 63 self._int_args_match[index] = kwargs[kwarg] def __hash__(self): '''SignalMatch objects are compared by identity.''' return hash(id(self)) def __eq__(self, other): '''SignalMatch objects are compared by identity.''' return self is other def __ne__(self, other): '''SignalMatch objects are compared by identity.''' return self is not other sender = property((lambda self: self._sender)) def __str__(self): if self._rule is None: rule = [ "type='signal'"] if self._sender is not None: rule.append("sender='%s'" % self._sender) if self._path is not None: rule.append("path='%s'" % self._path) if self._interface is not None: rule.append("interface='%s'" % self._interface) if self._member is not None: rule.append("member='%s'" % self._member) if self._int_args_match is not None: for index, value in self._int_args_match.iteritems(): rule.append("arg%d='%s'" % (index, value)) self._rule = ','.join(rule) return self._rule def __repr__(self): return '<%s at %x "%s" on conn %r>' % (self.__class__, id(self), self._rule, self._conn_weakref()) def set_sender_name_owner(self, new_name): self._sender_name_owner = new_name def matches_removal_spec(self, sender, object_path, dbus_interface, member, handler, **kwargs): if handler not in (None, self._handler): return False if sender != self._sender: return False if object_path != self._path: return False if dbus_interface != self._interface: return False if member != self._member: return False if kwargs != self._args_match: return False return True def maybe_handle_message(self, message): args = None if self._sender_name_owner not in (None, message.get_sender()): return False if self._member not in (None, message.get_member()): return False if self._interface not in (None, message.get_interface()): return False if self._path not in (None, message.get_path()): return False try: kwargs = { } if self._destination_keyword is not None: kwargs[self._destination_keyword] = message.get_destination() if self._path_keyword is not None: kwargs[self._path_keyword] = message.get_path() if self._member_keyword is not None: kwargs[self._member_keyword] = message.get_member() if self._interface_keyword is not None: kwargs[self._interface_keyword] = message.get_interface() if self._message_keyword is not None: kwargs[self._message_keyword] = message self._handler(*args, **kwargs) except: self._path not in (None, message.get_path()) self._interface not in (None, message.get_interface()) self._member not in (None, message.get_member()) logging.basicConfig() _logger.error('Exception in handler for D-Bus signal:', exc_info = 1) return True def remove(self): conn = self._conn_weakref() if conn is not None: conn.remove_signal_receiver(self, self._member, self._interface, self._sender, self._path, **self._args_match) class Connection(_Connection): '''A connection to another application. In this base class there is assumed to be no bus daemon. :Since: 0.81.0 ''' ProxyObjectClass = ProxyObject def __init__(self, *args, **kwargs): super(Connection, self).__init__(*args, **kwargs) if not hasattr(self, '_dbus_Connection_initialized'): self._dbus_Connection_initialized = 1 self._Connection__call_on_disconnection = [] self._signal_recipients_by_object_path = { } self._signals_lock = thread.allocate_lock() self.add_message_filter(self.__class__._signal_func) def activate_name_owner(self, bus_name): '''Return the unique name for the given bus name, activating it if necessary and possible. If the name is already unique or this connection is not to a bus daemon, just return it. :Returns: a bus name. If the given `bus_name` exists, the returned name identifies its current owner; otherwise the returned name does not exist. :Raises DBusException: if the implementation has failed to activate the given bus name. :Since: 0.81.0 ''' return bus_name def get_object(self, bus_name = None, object_path = None, introspect = True, **kwargs): '''Return a local proxy for the given remote object. Method calls on the proxy are translated into method calls on the remote object. :Parameters: `bus_name` : str A bus name (either the unique name or a well-known name) of the application owning the object. The keyword argument named_service is a deprecated alias for this. `object_path` : str The object path of the desired object `introspect` : bool If true (default), attempt to introspect the remote object to find out supported methods and their signatures :Returns: a `dbus.proxies.ProxyObject` ''' named_service = kwargs.pop('named_service', None) if named_service is not None: if bus_name is not None: raise TypeError('bus_name and named_service cannot both be specified') bus_name is not None warn = warn import warnings warn('Passing the named_service parameter to get_object by name is deprecated: please use positional parameters', DeprecationWarning, stacklevel = 2) bus_name = named_service if kwargs: raise TypeError('get_object does not take these keyword arguments: %s' % ', '.join(kwargs.iterkeys())) kwargs return self.ProxyObjectClass(self, bus_name, object_path, introspect = introspect) def add_signal_receiver(self, handler_function, signal_name = None, dbus_interface = None, bus_name = None, path = None, **keywords): """Arrange for the given function to be called when a signal matching the parameters is received. :Parameters: `handler_function` : callable The function to be called. Its positional arguments will be the arguments of the signal. By default it will receive no keyword arguments, but see the description of the optional keyword arguments below. `signal_name` : str The signal name; None (the default) matches all names `dbus_interface` : str The D-Bus interface name with which to qualify the signal; None (the default) matches all interface names `bus_name` : str A bus name for the sender, which will be resolved to a unique name if it is not already; None (the default) matches any sender. `path` : str The object path of the object which must have emitted the signal; None (the default) matches any object path :Keywords: `utf8_strings` : bool If True, the handler function will receive any string arguments as dbus.UTF8String objects (a subclass of str guaranteed to be UTF-8). If False (default) it will receive any string arguments as dbus.String objects (a subclass of unicode). `byte_arrays` : bool If True, the handler function will receive any byte-array arguments as dbus.ByteArray objects (a subclass of str). If False (default) it will receive any byte-array arguments as a dbus.Array of dbus.Byte (subclasses of: a list of ints). `sender_keyword` : str If not None (the default), the handler function will receive the unique name of the sending endpoint as a keyword argument with this name. `destination_keyword` : str If not None (the default), the handler function will receive the bus name of the destination (or None if the signal is a broadcast, as is usual) as a keyword argument with this name. `interface_keyword` : str If not None (the default), the handler function will receive the signal interface as a keyword argument with this name. `member_keyword` : str If not None (the default), the handler function will receive the signal name as a keyword argument with this name. `path_keyword` : str If not None (the default), the handler function will receive the object-path of the sending object as a keyword argument with this name. `message_keyword` : str If not None (the default), the handler function will receive the `dbus.lowlevel.SignalMessage` as a keyword argument with this name. `arg...` : unicode or UTF-8 str If there are additional keyword parameters of the form ``arg``\\ *n*, match only signals where the *n*\\ th argument is the value given for that keyword parameter. As of this time only string arguments can be matched (in particular, object paths and signatures can't). `named_service` : str A deprecated alias for `bus_name`. """ self._require_main_loop() named_service = keywords.pop('named_service', None) if named_service is not None: if bus_name is not None: raise TypeError('bus_name and named_service cannot both be specified') bus_name is not None bus_name = named_service warn = warn import warnings warn('Passing the named_service parameter to add_signal_receiver by name is deprecated: please use positional parameters', DeprecationWarning, stacklevel = 2) match = SignalMatch(self, bus_name, path, dbus_interface, signal_name, handler_function, **keywords) self._signals_lock.acquire() try: by_interface = self._signal_recipients_by_object_path.setdefault(path, { }) by_member = by_interface.setdefault(dbus_interface, { }) matches = by_member.setdefault(signal_name, []) matches.append(match) finally: self._signals_lock.release() return match def _iter_easy_matches(self, path, dbus_interface, member): if path is not None: path_keys = (None, path) else: path_keys = (None,) if dbus_interface is not None: interface_keys = (None, dbus_interface) else: interface_keys = (None,) if member is not None: member_keys = (None, member) else: member_keys = (None,) for path in path_keys: by_interface = self._signal_recipients_by_object_path.get(path, None) if by_interface is None: continue for dbus_interface in interface_keys: by_member = by_interface.get(dbus_interface, None) if by_member is None: continue for member in member_keys: matches = by_member.get(member, None) if matches is None: continue for m in matches: yield m def remove_signal_receiver(self, handler_or_match, signal_name = None, dbus_interface = None, bus_name = None, path = None, **keywords): named_service = keywords.pop('named_service', None) if named_service is not None: if bus_name is not None: raise TypeError('bus_name and named_service cannot both be specified') bus_name is not None bus_name = named_service warn = warn import warnings warn('Passing the named_service parameter to remove_signal_receiver by name is deprecated: please use positional parameters', DeprecationWarning, stacklevel = 2) new = [] deletions = [] self._signals_lock.acquire() try: by_interface = self._signal_recipients_by_object_path.get(path, None) if by_interface is None: return None by_member = by_interface.get(dbus_interface, None) if by_member is None: return None matches = by_member.get(signal_name, None) if matches is None: return None for match in matches: if handler_or_match is match or match.matches_removal_spec(bus_name, path, dbus_interface, signal_name, handler_or_match, **keywords): deletions.append(match) continue matches is None new.append(match) by_member[signal_name] = new finally: self._signals_lock.release() for match in deletions: self._clean_up_signal_match(match) def _clean_up_signal_match(self, match): pass def _signal_func(self, message): '''D-Bus filter function. Handle signals by dispatching to Python callbacks kept in the match-rule tree. ''' if not isinstance(message, SignalMessage): return HANDLER_RESULT_NOT_YET_HANDLED dbus_interface = message.get_interface() path = message.get_path() signal_name = message.get_member() for match in self._iter_easy_matches(path, dbus_interface, signal_name): match.maybe_handle_message(message) return HANDLER_RESULT_NOT_YET_HANDLED def call_async(self, bus_name, object_path, dbus_interface, method, signature, args, reply_handler, error_handler, timeout = -1, utf8_strings = False, byte_arrays = False, require_main_loop = True): '''Call the given method, asynchronously. If the reply_handler is None, successful replies will be ignored. If the error_handler is None, failures will be ignored. If both are None, the implementation may request that no reply is sent. :Returns: The dbus.lowlevel.PendingCall. :Since: 0.81.0 ''' if object_path == LOCAL_PATH: raise DBusException('Methods may not be called on the reserved path %s' % LOCAL_PATH) object_path == LOCAL_PATH if dbus_interface == LOCAL_IFACE: raise DBusException('Methods may not be called on the reserved interface %s' % LOCAL_IFACE) dbus_interface == LOCAL_IFACE get_args_opts = { 'utf8_strings': utf8_strings, 'byte_arrays': byte_arrays } message = MethodCallMessage(destination = bus_name, path = object_path, interface = dbus_interface, method = method) try: message.append(signature = signature, *args) except Exception: e = None logging.basicConfig() _logger.error('Unable to set arguments %r according to signature %r: %s: %s', args, signature, e.__class__, e) raise if reply_handler is None and error_handler is None: self.send_message(message) return None if reply_handler is None: reply_handler = _noop if error_handler is None: error_handler = _noop def msg_reply_handler(message): if isinstance(message, MethodReturnMessage): reply_handler(*message.get_args_list(**get_args_opts)) elif isinstance(message, ErrorMessage): error_handler(DBusException(name = message.get_error_name(), *message.get_args_list())) else: error_handler(TypeError('Unexpected type for reply message: %r' % message)) return self.send_message_with_reply(message, msg_reply_handler, timeout, require_main_loop = require_main_loop) def call_blocking(self, bus_name, object_path, dbus_interface, method, signature, args, timeout = -1, utf8_strings = False, byte_arrays = False): '''Call the given method, synchronously. :Since: 0.81.0 ''' if object_path == LOCAL_PATH: raise DBusException('Methods may not be called on the reserved path %s' % LOCAL_PATH) object_path == LOCAL_PATH if dbus_interface == LOCAL_IFACE: raise DBusException('Methods may not be called on the reserved interface %s' % LOCAL_IFACE) dbus_interface == LOCAL_IFACE get_args_opts = { 'utf8_strings': utf8_strings, 'byte_arrays': byte_arrays } message = MethodCallMessage(destination = bus_name, path = object_path, interface = dbus_interface, method = method) try: message.append(signature = signature, *args) except Exception: e = None logging.basicConfig() _logger.error('Unable to set arguments %r according to signature %r: %s: %s', args, signature, e.__class__, e) raise reply_message = self.send_message_with_reply_and_block(message, timeout) args_list = reply_message.get_args_list(**get_args_opts) if len(args_list) == 0: return None if len(args_list) == 1: return args_list[0] return tuple(args_list) def call_on_disconnection(self, callable): '''Arrange for `callable` to be called with one argument (this Connection object) when the Connection becomes disconnected. :Since: 0.83.0 ''' self._Connection__call_on_disconnection.append(callable) 
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