ÿØÿà JFIF    ÿÛ „  ( %"1!%)+...383,7(-.+  -+++--++++---+-+-----+---------------+---+-++7-----ÿÀ  ß â" ÿÄ     ÿÄ H    !1AQaq"‘¡2B±ÁÑð#R“Ò Tbr‚²á3csƒ’ÂñDS¢³$CÿÄ   ÿÄ %  !1AQa"23‘ÿÚ   ? ôÿ ¨pŸªáÿ —åYõõ\?àÒü©ŠÄï¨pŸªáÿ —åYõõ\?àÓü©ŠÄá 0Ÿªáÿ Ÿå[úƒ ú®ði~TÁbqÐ8OÕpÿ ƒOò¤Oè`–RÂáœá™êi€ßÉ< FtŸI“öÌ8úDf´°å}“¾œ6  öFá°y¥jñÇh†ˆ¢ã/ÃÐ:ªcÈ "Y¡ðÑl>ÿ ”ÏËte:qž\oäŠe÷󲍷˜HT4&ÿ ÓÐü6ö®¿øþßèô Ÿ•7Ñi’•j|“ñì>b…þS?*Óôÿ ÓÐü*h¥£ír¶ü UãSç‚Ÿ[AÐaè[ûª•õ&õj?†Éö+EzP—WeÒírJFt ‘BŒ†Ï‡%#tE Øz ¥OÛ«!1›üä±Í™%ºÍãö]°î(–:@<‹ŒÊö×òÆt¦ãº+‡¦%ÌÁ²h´OƒJŒtMÜ>ÀÜÊw3Y´•牋4ǍýʏTì>œú=Íwhyë,¾Ôò×õ¿ßÊa»«þˆѪQ|%6ž™A õ%:øj<>É—ÿ Å_ˆCbõ¥š±ý¯Ýƒï…¶|RëócÍf溪“t.СøTÿ *Ä¿-{†çàczůŽ_–^XþŒ±miB[X±d 1,é”zEù»& î9gœf™9Ð'.;—™i}!ôšåîqêÛ٤ёý£½ÆA–àôe"A$˝Úsäÿ ÷Û #°xŸëí(l »ý3—¥5m! rt`†0~'j2(]S¦¦kv,ÚÇ l¦øJA£Šƒ J3E8ÙiŽ:cÉžúeZ°€¯\®kÖ(79«Ž:¯X”¾³Š&¡* ….‰Ž(ÜíŸ2¥ª‡×Hi²TF¤ò[¨íÈRëÉ䢍mgÑ.Ÿ<öäS0í„ǹÁU´f#Vß;Õ–…P@3ío<ä-±»Ž.L|kªÀê›fÂ6@»eu‚|ÓaÞÆŸ…¨ááå>åŠ?cKü6ùTÍÆ”†sĤÚ;H2RÚ†õ\Ö·Ÿn'¾ ñ#ºI¤Å´%çÁ­‚â7›‹qT3Iï¨ÖÚ5I7Ë!ÅOóŸ¶øÝñØôת¦$Tcö‘[«Ö³šÒ';Aþ ¸èíg A2Z"i¸vdÄ÷.iõ®§)¿]¤À†–‡É&ä{V¶iŽ”.Ó×Õÿ û?h¬Mt–íª[ÿ Ñÿ ÌV(í}=ibÔ¡›¥¢±b Lô¥‡piη_Z<‡z§èŒ)iÖwiÇ 2hÙ3·=’d÷8éŽ1¦¸c¤µ€7›7Ø ð\á)} ¹fËí›pAÃL%âc2 í§æQz¿;T8sæ°qø)QFMð‰XŒÂ±N¢aF¨…8¯!U  Z©RÊ ÖPVÄÀÍin™Ì-GˆªÅËŠ›•zË}º±ŽÍFò¹}Uw×#ä5B¤{î}Ð<ÙD é©¤&‡ïDbàÁôMÁ." ¤‡ú*õ'VŽ|¼´Úgllº¼klz[Æüï÷Aób‡Eÿ dÑ»Xx9ÃÜ£ÁT/`¼¸vI±Ýµ·Ë‚“G³þ*Ÿû´r|*}<¨îºœ @¦mÄ’M¹”.œ«Y–|6ÏU¤jç¥ÕÞqO ˜kDÆÁ¨5ÿ š;Њ¦¦€GÙk \ –Þ=â¼=SͧµªS°ÚÍpÜãQűÀõ¬?ÃÁ1Ñ•õZà?hóœ€ L¦l{Y*K˜Ù›zc˜–ˆâ ø+¾ ­-Ök¥%ùEÜA'}ˆ><ÊIè“bpÍ/qÞâvoX€w,\úªò6Z[XdÒæ­@Ö—€$òJí#é>'°Ú ôª˜<)4ryÙ£|óAÅn5žêŸyÒäMÝ2{"}‰–¤l÷ûWX\l¾Á¸góÉOÔ /óñB¤f¸çñ[.P˜ZsÊË*ßT܈§QN¢’¡¨§V¼(Üù*eÕ“”5T¨‹Âê¥FŒã½Dü[8'Ò¥a…Ú¶k7a *•›¼'Ò·\8¨ª\@\õ¢¦íq+DÙrmÎ…_ªæ»ŠÓœ¡¯’Ré9MÅ×D™lælffc+ŒÑ,ý™ÿ ¯þǤ=Å’Á7µ÷ÚÛ/“Ü€ñýã¼àí¾ÕÑ+ƒ,uµMâÀÄbm:ÒÎPæ{˜Gz[ƒ¯«® KHà`ßØŠéí¯P8Aq.C‰ à€kòpj´kN¶qô€…Õ,ÜNŠª-­{Zö’æû44‰sŽè‰îVíRœÕm" 6?³D9¡ÇTíÅꋇ`4«¸ÝÁô ï’ýorqКÇZ«x4Žâéþuïf¹µö[P ,Q£éaX±`PÉÍZ ¸äYúg üAx ’6Lê‚xÝÓ*äQ  Ï’¨hÍ =²,6ï#rÃ<¯–£»ƒ‹,–ê•€ aÛsñ'%Æ"®ÛüìBᝠHÚ3ß°©$“XnœÖ’î2ËTeûìxîß ¦å¿çÉ ðK§þ{‘t‚Ϋ¬jéîZ[ ”š7L¥4VÚCE×]m¤Øy”ä4-dz£œ§¸x.*ãÊÊ b÷•h:©‡¦s`BTÁRû¾g⻩‹jø sF¢àJøFl‘È•Xᓁà~*j¯ +(ÚÕ6-£¯÷GŠØy‚<Ç’.F‹Hœw(+)ÜÜâÈzÄäT§FߘãÏ;DmVœ3Àu@mÚüXÝü•3B¨òÌÁÛ<·ÃÜ z,Ì@õÅ·d2]ü8s÷IôÞ¯^Ç9¢u„~ëAŸï4«M? 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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER # DEALINGS IN THE SOFTWARE. __all__ = ('BusConnection',) __docformat__ = 'reStructuredText' import logging import weakref from _dbus_bindings import ( BUS_DAEMON_IFACE, BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_SESSION, BUS_STARTER, BUS_SYSTEM, DBUS_START_REPLY_ALREADY_RUNNING, DBUS_START_REPLY_SUCCESS, NAME_FLAG_ALLOW_REPLACEMENT, NAME_FLAG_DO_NOT_QUEUE, NAME_FLAG_REPLACE_EXISTING, RELEASE_NAME_REPLY_NON_EXISTENT, RELEASE_NAME_REPLY_NOT_OWNER, RELEASE_NAME_REPLY_RELEASED, REQUEST_NAME_REPLY_ALREADY_OWNER, REQUEST_NAME_REPLY_EXISTS, REQUEST_NAME_REPLY_IN_QUEUE, REQUEST_NAME_REPLY_PRIMARY_OWNER, validate_bus_name, validate_error_name, validate_interface_name, validate_member_name, validate_object_path) from dbus.connection import Connection from dbus.exceptions import DBusException from dbus.lowlevel import HANDLER_RESULT_NOT_YET_HANDLED from dbus._compat import is_py2 _NAME_OWNER_CHANGE_MATCH = ("type='signal',sender='%s'," "interface='%s',member='NameOwnerChanged'," "path='%s',arg0='%%s'" % (BUS_DAEMON_NAME, BUS_DAEMON_IFACE, BUS_DAEMON_PATH)) """(_NAME_OWNER_CHANGE_MATCH % sender) matches relevant NameOwnerChange messages""" _NAME_HAS_NO_OWNER = 'org.freedesktop.DBus.Error.NameHasNoOwner' _logger = logging.getLogger('dbus.bus') class NameOwnerWatch(object): __slots__ = ('_match', '_pending_call') def __init__(self, bus_conn, bus_name, callback): validate_bus_name(bus_name) def signal_cb(owned, old_owner, new_owner): callback(new_owner) def error_cb(e): if e.get_dbus_name() == _NAME_HAS_NO_OWNER: callback('') else: logging.basicConfig() _logger.debug('GetNameOwner(%s) failed:', bus_name, exc_info=(e.__class__, e, None)) self._match = bus_conn.add_signal_receiver(signal_cb, 'NameOwnerChanged', BUS_DAEMON_IFACE, BUS_DAEMON_NAME, BUS_DAEMON_PATH, arg0=bus_name) keywords = {} if is_py2: keywords['utf8_strings'] = True self._pending_call = bus_conn.call_async(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'GetNameOwner', 's', (bus_name,), callback, error_cb, **keywords) def cancel(self): if self._match is not None: self._match.remove() if self._pending_call is not None: self._pending_call.cancel() self._match = None self._pending_call = None class BusConnection(Connection): """A connection to a D-Bus daemon that implements the ``org.freedesktop.DBus`` pseudo-service. :Since: 0.81.0 """ TYPE_SESSION = BUS_SESSION """Represents a session bus (same as the global dbus.BUS_SESSION)""" TYPE_SYSTEM = BUS_SYSTEM """Represents the system bus (same as the global dbus.BUS_SYSTEM)""" TYPE_STARTER = BUS_STARTER """Represents the bus that started this service by activation (same as the global dbus.BUS_STARTER)""" START_REPLY_SUCCESS = DBUS_START_REPLY_SUCCESS START_REPLY_ALREADY_RUNNING = DBUS_START_REPLY_ALREADY_RUNNING def __new__(cls, address_or_type=TYPE_SESSION, mainloop=None): bus = cls._new_for_bus(address_or_type, mainloop=mainloop) # _bus_names is used by dbus.service.BusName! bus._bus_names = weakref.WeakValueDictionary() bus._signal_sender_matches = {} """Map from SignalMatch to NameOwnerWatch.""" return bus def add_signal_receiver(self, handler_function, 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 = named_service from warnings import warn warn('Passing the named_service parameter to add_signal_receiver ' 'by name is deprecated: please use positional parameters', DeprecationWarning, stacklevel=2) match = super(BusConnection, self).add_signal_receiver( handler_function, signal_name, dbus_interface, bus_name, path, **keywords) if (bus_name is not None and bus_name != BUS_DAEMON_NAME): if bus_name[:1] == ':': def callback(new_owner): if new_owner == '': match.remove() else: callback = match.set_sender_name_owner watch = self.watch_name_owner(bus_name, callback) self._signal_sender_matches[match] = watch self.add_match_string(str(match)) return match def _clean_up_signal_match(self, match): # The signals lock is no longer held here (it was in <= 0.81.0) self.remove_match_string_non_blocking(str(match)) watch = self._signal_sender_matches.pop(match, None) if watch is not None: watch.cancel() def activate_name_owner(self, bus_name): if (bus_name is not None and bus_name[:1] != ':' and bus_name != BUS_DAEMON_NAME): try: return self.get_name_owner(bus_name) except DBusException as e: if e.get_dbus_name() != _NAME_HAS_NO_OWNER: raise # else it doesn't exist: try to start it self.start_service_by_name(bus_name) return self.get_name_owner(bus_name) else: # already unique return bus_name def get_object(self, bus_name, object_path, introspect=True, follow_name_owner_changes=False, **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 `follow_name_owner_changes` : bool If the object path is a well-known name and this parameter is false (default), resolve the well-known name to the unique name of its current owner and bind to that instead; if the ownership of the well-known name changes in future, keep communicating with the original owner. This is necessary if the D-Bus API used is stateful. If the object path is a well-known name and this parameter is true, whenever the well-known name changes ownership in future, bind to the new owner, if any. If the given object path is a unique name, this parameter has no effect. :Returns: a `dbus.proxies.ProxyObject` :Raises `DBusException`: if resolving the well-known name to a unique name fails """ if follow_name_owner_changes: self._require_main_loop() # we don't get the signals otherwise 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') from warnings import warn 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.keys())) return self.ProxyObjectClass(self, bus_name, object_path, introspect=introspect, follow_name_owner_changes=follow_name_owner_changes) def get_unix_user(self, bus_name): """Get the numeric uid of the process owning the given bus name. :Parameters: `bus_name` : str A bus name, either unique or well-known :Returns: a `dbus.UInt32` :Since: 0.80.0 """ validate_bus_name(bus_name) return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'GetConnectionUnixUser', 's', (bus_name,)) def start_service_by_name(self, bus_name, flags=0): """Start a service which will implement the given bus name on this Bus. :Parameters: `bus_name` : str The well-known bus name to be activated. `flags` : dbus.UInt32 Flags to pass to StartServiceByName (currently none are defined) :Returns: A tuple of 2 elements. The first is always True, the second is either START_REPLY_SUCCESS or START_REPLY_ALREADY_RUNNING. :Raises `DBusException`: if the service could not be started. :Since: 0.80.0 """ validate_bus_name(bus_name) return (True, self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'StartServiceByName', 'su', (bus_name, flags))) # XXX: it might be nice to signal IN_QUEUE, EXISTS by exception, # but this would not be backwards-compatible def request_name(self, name, flags=0): """Request a bus name. :Parameters: `name` : str The well-known name to be requested `flags` : dbus.UInt32 A bitwise-OR of 0 or more of the flags `NAME_FLAG_ALLOW_REPLACEMENT`, `NAME_FLAG_REPLACE_EXISTING` and `NAME_FLAG_DO_NOT_QUEUE` :Returns: `REQUEST_NAME_REPLY_PRIMARY_OWNER`, `REQUEST_NAME_REPLY_IN_QUEUE`, `REQUEST_NAME_REPLY_EXISTS` or `REQUEST_NAME_REPLY_ALREADY_OWNER` :Raises `DBusException`: if the bus daemon cannot be contacted or returns an error. """ validate_bus_name(name, allow_unique=False) return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'RequestName', 'su', (name, flags)) def release_name(self, name): """Release a bus name. :Parameters: `name` : str The well-known name to be released :Returns: `RELEASE_NAME_REPLY_RELEASED`, `RELEASE_NAME_REPLY_NON_EXISTENT` or `RELEASE_NAME_REPLY_NOT_OWNER` :Raises `DBusException`: if the bus daemon cannot be contacted or returns an error. """ validate_bus_name(name, allow_unique=False) return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'ReleaseName', 's', (name,)) def list_names(self): """Return a list of all currently-owned names on the bus. :Returns: a dbus.Array of dbus.UTF8String :Since: 0.81.0 """ keywords = {} if is_py2: keywords['utf8_strings'] = True return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'ListNames', '', (), **keywords) def list_activatable_names(self): """Return a list of all names that can be activated on the bus. :Returns: a dbus.Array of dbus.UTF8String :Since: 0.81.0 """ keywords = {} if is_py2: keywords['utf8_strings'] = True return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'ListActivatableNames', '', (), **keywords) def get_name_owner(self, bus_name): """Return the unique connection name of the primary owner of the given name. :Raises `DBusException`: if the `bus_name` has no owner :Since: 0.81.0 """ keywords = {} if is_py2: keywords['utf8_strings'] = True validate_bus_name(bus_name, allow_unique=False) return self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'GetNameOwner', 's', (bus_name,), **keywords) def watch_name_owner(self, bus_name, callback): """Watch the unique connection name of the primary owner of the given name. `callback` will be called with one argument, which is either the unique connection name, or the empty string (meaning the name is not owned). :Since: 0.81.0 """ return NameOwnerWatch(self, bus_name, callback) def name_has_owner(self, bus_name): """Return True iff the given bus name has an owner on this bus. :Parameters: `bus_name` : str The bus name to look up :Returns: a `bool` """ return bool(self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'NameHasOwner', 's', (bus_name,))) def add_match_string(self, rule): """Arrange for this application to receive messages on the bus that match the given rule. This version will block. :Parameters: `rule` : str The match rule :Raises `DBusException`: on error. :Since: 0.80.0 """ self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'AddMatch', 's', (rule,)) # FIXME: add an async success/error handler capability? # (and the same for remove_...) def add_match_string_non_blocking(self, rule): """Arrange for this application to receive messages on the bus that match the given rule. This version will not block, but any errors will be ignored. :Parameters: `rule` : str The match rule :Raises `DBusException`: on error. :Since: 0.80.0 """ self.call_async(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'AddMatch', 's', (rule,), None, None) def remove_match_string(self, rule): """Arrange for this application to receive messages on the bus that match the given rule. This version will block. :Parameters: `rule` : str The match rule :Raises `DBusException`: on error. :Since: 0.80.0 """ self.call_blocking(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'RemoveMatch', 's', (rule,)) def remove_match_string_non_blocking(self, rule): """Arrange for this application to receive messages on the bus that match the given rule. This version will not block, but any errors will be ignored. :Parameters: `rule` : str The match rule :Raises `DBusException`: on error. :Since: 0.80.0 """ self.call_async(BUS_DAEMON_NAME, BUS_DAEMON_PATH, BUS_DAEMON_IFACE, 'RemoveMatch', 's', (rule,), None, None)