def __init__(self):
CompositeType.__init__(self)
self.x = UInt16Be()
self.y = UInt16Be()
self.width = UInt16Be()
self.height = UInt16Be()
self.encoding = SInt32Be()
def __init__(self, incremental=False, x=0, y=0, width=0, height=0):
CompositeType.__init__(self)
self.incremental = UInt8(incremental)
self.x = UInt16Be(x)
self.y = UInt16Be(y)
self.width = UInt16Be(width)
self.height = UInt16Be(height)
def readInteger(s):
'''
read integer structure from stream
@param s: stream
@return: int or long python
'''
if not readUniversalTag(s, Tag.BER_TAG_INTEGER, False):
raise InvalidExpectedDataException("bad integer tag")
size = readLength(s)
if size == 1:
integer = UInt8()
s.readType(integer)
return integer.value
elif size == 2:
integer = UInt16Be()
s.readType(integer)
return integer.value
elif size == 3:
integer1 = UInt8()
integer2 = UInt16Be()
s.readType(integer1)
s.readType(integer2)
return integer2.value + (integer1.value << 16)
elif size == 4:
integer = UInt32Be()
s.readType(integer)
return integer.value
else:
raise InvalidExpectedDataException("wrong integer size")
def __init__(self):
CompositeType.__init__(self)
self.len = UInt8(lambda:sizeof(self) - 1)
self.code = UInt8()
self.padding = (UInt16Be(), UInt16Be(), UInt8())
#read if there is enought data
self.protocolNeg = Negotiation(optional = True)
def send(self, channelId, data):
'''
specific send function for channelId
@param data: message to send
'''
self._transport.send(
(self.writeMCSPDUHeader(DomainMCSPDU.SEND_DATA_REQUEST),
self._userId, channelId, UInt8(0x70),
UInt16Be(sizeof(data)) | UInt16Be(0x8000), data))
def __init__(self):
CompositeType.__init__(self)
self.BitsPerPixel = UInt8(32)
self.Depth = UInt8(24)
self.BigEndianFlag = UInt8(False)
self.TrueColorFlag = UInt8(True)
self.RedMax = UInt16Be(255)
self.GreenMax = UInt16Be(255)
self.BlueMax = UInt16Be(255)
self.RedShift = UInt8(16)
self.GreenShift = UInt8(8)
self.BlueShift = UInt8(0)
self.padding = (UInt16Be(), UInt8())
def readExtendedHeader(self, data):
'''
header may be on 4 bytes
'''
#next state is read data
size = UInt16Be()
data.readType(size)
self.expect(size.value - 4, self.readData)
def readLength(s):
'''
read length use in per specification
@param s: Stream
@return: int python
'''
byte = UInt8()
s.readType(byte)
size = None
if (byte & UInt8(0x80)) == UInt8(0x80):
byte &= ~UInt8(0x80)
size = UInt16Be(byte.value << 8)
s.readType(byte)
size += s.value + byte
else:
size = UInt16Be(byte.value)
return size.value
def writeInteger16(value, minimum = 0):
'''
write UInt16Be minus minimum
@param value: value to write
@param minimum: value subtracted to real value
@return: UInt16Be
'''
return UInt16Be(value - minimum)
def recvFrameBufferUpdateHeader(self, data):
'''
read frame buffer update packet header
'''
#padding
nbRect = UInt16Be()
self._nbRect = data.readType((UInt8(), nbRect))
self._nbRect = nbRect.value
self.expect(12, self.recvRectHeader)
def writeLength(value):
'''
write length as expected in per specification
@param value: int or long python
@return: UInt8, UInt16Be depend on value
'''
if value > 0x7f:
return UInt16Be(value | 0x8000)
else:
return UInt8(value)
def readInteger16(s, minimum = 0):
'''
read UInt16Be from stream s and add minimum
@param s: Stream
@param minimum: minimum added to real value
@return: int or long python value
'''
result = UInt16Be()
s.readType(result)
return result.value + minimum
def writeLength(size):
'''
return strcture length as expected in Ber specification
@param size: int or python long
@return: UInt8 or (UInt8(0x82), UInt16Be)
'''
if size > 0x7f:
return (UInt8(0x82), UInt16Be(size))
else:
return UInt8(size)
def writeInteger(value):
'''
write python long or int into per integer format
@param value: int or long python value
@return: UInt8, UInt16Be or UInt32Be
'''
if value <= 0xff:
return (writeLength(1), UInt8(value))
elif value < 0xffff:
return (writeLength(2), UInt16Be(value))
else:
return (writeLength(4), UInt32Be(value))
def writeInteger(value):
'''
write integer value
@param param: int or python long
@return ber interger structure
'''
if value <= 0xff:
return (writeUniversalTag(Tag.BER_TAG_INTEGER, False), writeLength(1), UInt8(value))
elif value <= 0xffff:
return (writeUniversalTag(Tag.BER_TAG_INTEGER, False), writeLength(2), UInt16Be(value))
else:
return (writeUniversalTag(Tag.BER_TAG_INTEGER, False), writeLength(4), UInt32Be(value))
def recvData(self, data):
'''
main receive method
@param data: Stream
'''
opcode = UInt8()
data.readType(opcode)
if self.readMCSPDUHeader(opcode,
DomainMCSPDU.DISCONNECT_PROVIDER_ULTIMATUM):
print "receive DISCONNECT_PROVIDER_ULTIMATUM"
self.close()
elif not self.readMCSPDUHeader(opcode,
DomainMCSPDU.SEND_DATA_INDICATION):
raise InvalidExpectedDataException("invalid expected mcs opcode")
userId = UInt16Be()
channelId = UInt16Be()
flags = UInt8()
length = UInt8()
data.readType((userId, channelId, flags, length))
if length & UInt8(0x80) == UInt8(0x80):
lengthP2 = UInt8()
data.readType(lengthP2)
length = UInt16Be(length.value & 0x7f << 8 | lengthP2.value)
#channel id doesn't match a requested layer
if not self._channelIdsRequest.has_key(channelId):
print "receive data for an unrequested layer"
return
#channel id math an unconnected layer
if not self._channelIdsRequest[channelId]:
print "receive data for an unconnected layer"
return
self._channelIds[channelId].recv(data)
def recvChannelJoinConfirm(self, data):
'''
receive a channel join confirm from server
@param data: Stream
'''
opcode = UInt8()
confirm = UInt8()
data.readType((opcode, confirm))
if not self.readMCSPDUHeader(opcode,
DomainMCSPDU.CHANNEL_JOIN_CONFIRM):
raise InvalidExpectedDataException("invalid MCS PDU")
userId = UInt16Be()
channelId = UInt16Be()
data.readType((userId, channelId))
#save state of channel
self._channelIdsRequest[channelId] = confirm == 0
if confirm == 0:
print "server accept channel %d" % channelId.value
else:
print "server refused channel %d" % channelId.value
self.connectNextChannel()
def __init__(self, presentation):
'''
ctor call base class ctor
@param presentation: presentation layer
'''
LayerAutomata.__init__(self, presentation._mode, presentation)
self._clientSettings = gcc.ClientSettings()
self._serverSettings = gcc.ServerSettings()
#default user Id
self._userId = UInt16Be(1)
#list of channel use in this layer and connection state
self._channelIds = {Channel.MCS_GLOBAL_CHANNEL: presentation}
#use to record already requested channel
self._channelIdsRequest = {}
def readInteger(s):
'''
read interger per format from stream
@param s: Stream
@return: python int or long
@raise InvalidValue: if size of integer is not correct
'''
result = None
size = readLength(s)
if size == 1:
result = UInt8()
elif size == 2:
result = UInt16Be()
elif size == 4:
result = UInt32Be()
else:
raise InvalidValue("invalid integer size %d"%size)
s.readType(result)
return result.value
def expectedBody(self, data):
'''
read header and wait header value to call next state
@param data: Stream that length are to header length (1|2|4 bytes)
set next state to callBack body when length read from header
are received
'''
bodyLen = None
if data.len == 1:
bodyLen = UInt8()
elif data.len == 2:
bodyLen = UInt16Be()
elif data.len == 4:
bodyLen = UInt32Be()
else:
print "invalid header length"
return
data.readType(bodyLen)
self.expect(bodyLen.value, self._callbackBody)
def readLength(s):
'''
read length of ber structure
length be on 1 2 or 3 bytes
@param s: stream
@return: int or python long
'''
size = None
length = UInt8()
s.readType(length)
byte = length.value
if (byte & 0x80):
byte &= 0x80
if byte == 1:
size = UInt8()
elif byte == 2:
size = UInt16Be()
else:
raise InvalidExpectedDataException("ber length may be 1 or 2")
s.readType(size)
else:
size = length
return size.value
def sendPixelFormat(self, pixelFormat):
'''
send pixel format structure
'''
self.send((ClientToServerMessages.PIXEL_FORMAT, UInt16Be(), UInt8(),
pixelFormat))
def __init__(self):
CompositeType.__init__(self)
self.width = UInt16Be()
self.height = UInt16Be()
self.pixelFormat = PixelFormat()
def __init__(self, text=""):
CompositeType.__init__(self)
self.padding = (UInt16Be(), UInt8())
self.size = UInt32Be(len(text))
self.message = String(text)
def __init__(self, mask=0, x=0, y=0):
CompositeType.__init__(self)
self.mask = UInt8(mask)
self.x = UInt16Be(x)
self.y = UInt16Be(y)
def __init__(self, downFlag=False, key=0):
CompositeType.__init__(self)
self.downFlag = UInt8(downFlag)
self.padding = UInt16Be()
self.key = UInt32Be(key)
def sendSetEncoding(self):
'''
send set encoding packet
'''
self.send((ClientToServerMessages.ENCODING, UInt8(), UInt16Be(1),
Encoding.RAW))
def send(self, message):
'''
send encapsuled data
'''
RawLayer.send(self, (TPKT.TPKT_PACKET, UInt8(0),
UInt16Be(sizeof(message) + 4), message))