def __init__(self, error_name, reply_serial, destination=None,
signature=None, body=None, sender=None):
"""
@param error_name: C{str} DBus error name
@param reply_serial: C{int} serial number this message is a reply to
@param destination: C{str} DBus bus name for message destination or
None
@param signature: C{str} DBus signature string for encoding
C{self.body}
@param body: C{list} of python objects to encode. Objects must match
the C{self.signature}
@param sender: C{str} name of the originating Bus connection
"""
if destination:
marshal.validateBusName(destination)
marshal.validateInterfaceName(error_name)
self.error_name = error_name
self.reply_serial = marshal.UInt32(reply_serial)
self.destination = destination
self.signature = signature
self.body = body
self.sender = sender
self._marshal()
def __init__(self, reply_serial, body=None, destination=None,
signature=None):
"""
@param reply_serial: C{int} serial number this message is a reply to
@param destination: C{str} DBus bus name for message destination or
None
@param signature: C{str} DBus signature string for encoding
C{self.body}
@param body: C{list} of python objects to encode. Objects must match
the C{self.signature}
"""
if destination:
marshal.validateBusName(destination)
self.reply_serial = marshal.UInt32(reply_serial)
self.destination = destination
self.signature = signature
self.body = body
self._marshal()
def _marshal(self, newSerial=True, oobFDs=None):
"""
Encodes the message into binary format. The resulting binary message is
stored in C{self.rawMessage}
"""
flags = 0
if not self.expectReply:
flags |= 0x1
if not self.autoStart:
flags |= 0x2
# may be overriden below, depending on oobFDs
_headerAttrs = self._headerAttrs
# marshal body before headers to know if the 'unix_fd' header is needed
if self.signature:
binBody = b''.join(
marshal.marshal(
self.signature,
self.body,
oobFDs=oobFDs
)[1]
)
if oobFDs:
# copy class based _headerAttrs to add a unix_fds header this
# time
_headerAttrs = list(self._headerAttrs)
_headerAttrs.append(('unix_fds', 9, False))
self.unix_fds = len(oobFDs)
else:
binBody = b''
self.headers = []
for attr_name, code, is_required in _headerAttrs:
hval = getattr(self, attr_name, None)
if hval is not None:
if attr_name == 'path':
hval = marshal.ObjectPath(hval)
elif attr_name == 'signature':
hval = marshal.Signature(hval)
elif attr_name == 'unix_fds':
hval = marshal.UInt32(hval)
self.headers.append([code, hval])
self.bodyLength = len(binBody)
if newSerial:
self.serial = DBusMessage._nextSerial
DBusMessage._nextSerial += 1
binHeader = b''.join(marshal.marshal(
_headerFormat,
[
self.endian,
self._messageType,
flags,
self._protocolVersion,
self.bodyLength,
self.serial,
self.headers
],
lendian=self.endian == ord('l')
)[1])
headerPadding = marshal.pad['header'](len(binHeader))
self.rawHeader = binHeader
self.rawPadding = headerPadding
self.rawBody = binBody
self.rawMessage = b''.join([binHeader, headerPadding, binBody])
if len(self.rawMessage) > self._maxMsgLen:
raise error.MarshallingError(
'Marshalled message exceeds maximum message size of %d' %
(self._maxMsgLen,),
)
