def _Deserialize_CurrentVer(self, fileobj):
"""
Deserializes a tile in the current map file format.
@type fileobj: C{file}
@param fileobj: File (or compatible stream) to read from.
"""
# first: the flags
try:
flags = BinaryStructs.DeserializeUint32(fileobj)
except Exception as e:
raise MapError("invalid/corrupt map file", e)
# Check for the end-of-tiles flag.
if flags & self.EndOfTilesFlag:
# End of tiles.
raise EndOfSectionException
# Read in the rest of the title data.
# Validation should happen in the map deserialization (since it has
# access to the map header for dimensional validation). Just store
# the values for now.
try:
self.x = BinaryStructs.DeserializeUint32(fileobj)
self.y = BinaryStructs.DeserializeUint32(fileobj)
self.z = BinaryStructs.DeserializeUint32(fileobj)
self.tileid = BinaryStructs.DeserializeUint32(fileobj)
except Exception as e:
raise MapError("invalid/corrupt map file", e)
def DeserializeBody(self, stream):
# Read data.
try:
self.RequestSerial = BinaryStructs.DeserializeUint32(stream)
self.ChallengeSolution = BinaryStructs.DeserializeBinary(stream,
maxlen=32)
except BinaryStructs.EndOfFile:
raise IncompletePacket
def DeserializeBody(self, stream):
# Read data.
try:
self.RequestSerial = BinaryStructs.DeserializeUint32(stream)
self.Username = BinaryStructs.DeserializeUTF8(stream, maxlen=32)
self.Salt = BinaryStructs.DeserializeBinary(stream, maxlen=16)
self.PasswordHash = BinaryStructs.DeserializeBinary(stream, 64)
self.Email = BinaryStructs.DeserializeUTF8(stream, maxlen=64)
except BinaryStructs.EndOfFile:
raise IncompletePacket
def DeserializeBody(self, stream):
# Read values.
try:
self.RequestSerial = BinaryStructs.DeserializeUint32(stream)
self.ReasonCode = BinaryStructs.DeserializeUint16(stream)
except BinaryStructs.EndOfFile:
raise IncompletePacket
except:
msg = "Unhandled exception in DeserializeBody, packet type 4.\n\n"
msg += traceback.format_exc()
logging.error(msg)
raise CorruptPacket
def Deserialize(self, fileobj, formatver=CurrentMapVersion):
"""
Reads and decodes the header from a stream (usually a file).
@type fileobj: C{file}
@param fileobj: File object to read the header from.
@type formatver: integer
@param formatver: version of the map file format to process
"""
# which version are we reading from?
if formatver == CurrentMapVersion:
# latest version of the header format!
# again, we're just reading everything in the right order
# first up is the basic file information
try:
self.MapName = BinaryStructs.DeserializeUTF8(fileobj)
self.MapName.strip()
self.Width = BinaryStructs.DeserializeUint32(fileobj)
self.Height = BinaryStructs.DeserializeUint32(fileobj)
self.Depth = BinaryStructs.DeserializeUint32(fileobj)
self.PlayerDepth = BinaryStructs.DeserializeUint32(fileobj)
except:
msg = "Map file is invalid/corrupt.\n"
msg += traceback.format_exc()
mainlog.error(msg)
raise
# validate the basic file information
if self.Width < 1 or self.Height < 1 or self.Depth < 1:
# invalid dimensions
raise MapError("Map file is invalid/corrupt: dimensions")
if self.PlayerDepth < 0 or self.PlayerDepth >= self.Depth:
# render depth out of bounds
raise MapError("Player/object render depth out of bounds.")
# now we read in the links
try:
self.NorthMap = BinaryStructs.DeserializeUTF8(fileobj)
self.NorthMap.strip()
self.EastMap = BinaryStructs.DeserializeUTF8(fileobj)
self.EastMap.strip()
self.SouthMap = BinaryStructs.DeserializeUTF8(fileobj)
self.SouthMap.strip()
self.WestMap = BinaryStructs.DeserializeUTF8(fileobj)
self.WestMap.strip()
self.BackgroundImage = BinaryStructs.DeserializeUTF8(fileobj)
self.BackgroundImage.strip()
except Exception as e:
raise MapError("Map file is invalid/corrupt.", e)
# and then we read in the content flags...
try:
contentflags = BinaryStructs.DeserializeUint32(fileobj)
except Exception as e:
raise MapError("Map file is invalid/corrupt.", e)
self.Stripped = contentflags & self.Flag_ContentStripped
else:
# unrecognized future version
raise FutureFormatException("unrecognized format version")