private static PacketDefinition Deserialize(string packetContent, PacketDefinition deserializedPacket,
KeyValuePair <Tuple <Type, string>,
Dictionary <PacketIndexAttribute, PropertyInfo> > serializationInformation,
bool includesKeepAliveIdentity)
{
var matches = Regex.Matches(packetContent,
@"([^\040]+[\.][^\040]+[\040]?)+((?=\040)|$)|([^\040]+)((?=\040)|$)");
if (matches.Count > 0)
{
foreach (var packetBasePropertyInfo in serializationInformation.Value)
{
var currentIndex =
packetBasePropertyInfo.Key.Index
+ (includesKeepAliveIdentity ? 2
: 1); // adding 2 because we need to skip incrementing number and packet header
if (currentIndex < matches.Count + (includesKeepAliveIdentity ? 1 : 0))
{
if (packetBasePropertyInfo.Key.SerializeToEnd)
{
// get the value to the end and stop deserialization
var index = matches.Count > currentIndex ? matches[currentIndex].Index
: packetContent.Length;
var valueToEnd =
packetContent.Substring(index, packetContent.Length - index);
packetBasePropertyInfo.Value.SetValue(deserializedPacket,
DeserializeValue(packetBasePropertyInfo.Value.PropertyType, valueToEnd,
packetBasePropertyInfo.Key,
packetBasePropertyInfo.Value.GetCustomAttributes <ValidationAttribute>(), matches,
includesKeepAliveIdentity));
break;
}
var currentValue = matches[currentIndex].Value;
// set the value & convert currentValue
packetBasePropertyInfo.Value.SetValue(deserializedPacket,
DeserializeValue(packetBasePropertyInfo.Value.PropertyType, currentValue,
packetBasePropertyInfo.Key,
packetBasePropertyInfo.Value.GetCustomAttributes <ValidationAttribute>(), matches,
includesKeepAliveIdentity));
}
else
{
break;
}
}
}
return(deserializedPacket);
}
/// <summary>
/// Deserializes a string into a PacketDefinition
/// </summary>
/// <param name="packetContent">The content to deseralize</param>
/// <param name="packetType">The type of the packet to deserialize to</param>
/// <param name="includesKeepAliveIdentity">
/// Include the keep alive identity or exclude it
/// </param>
/// <returns>The deserialized packet.</returns>
public static PacketDefinition Deserialize(string packetContent, Type packetType, bool includesKeepAliveIdentity = false)
{
try
{
KeyValuePair <Tuple <Type, string>, Dictionary <PacketIndexAttribute, PropertyInfo> > serializationInformation = GetSerializationInformation(packetType);
PacketDefinition deserializedPacket = packetType.CreateInstance <PacketDefinition>();
SetDeserializationInformations(deserializedPacket, packetContent, serializationInformation.Key.Item2);
return(Deserialize(packetContent, deserializedPacket, serializationInformation, includesKeepAliveIdentity));
}
catch (Exception e)
{
Logger.Logger.Log.Warn($"The serialized packet has the wrong format. Packet: {packetContent}", e);
return(null);
}
}
private static void SetDeserializationInformations(PacketDefinition packetDefinition,
string packetContent, string packetHeader)
{
packetDefinition.OriginalContent = packetContent;
packetDefinition.OriginalHeader = packetHeader;
}
private static PacketDefinition Deserialize(string packetContent, PacketDefinition deserializedPacket,
KeyValuePair <Tuple <Type, string>,
Dictionary <PacketIndexAttribute, PropertyInfo> > serializationInformation,
bool includesKeepAliveIdentity)
{
var matches = Regex.Matches(packetContent,
@"([^\040]+[\.][^\040]+[\040]?)+((?=\040)|$)|([^\040]+)((?=\040)|$)");
if (matches.Count > 0)
{
int?realIndex = null;
foreach (var packetBasePropertyInfo in serializationInformation.Value)
{
var currentIndex =
packetBasePropertyInfo.Key.Index
+ (includesKeepAliveIdentity ? 2
: 1); // adding 2 because we need to skip incrementing number and packet header
if (currentIndex < matches.Count + (includesKeepAliveIdentity ? 1 : 0))
{
if (packetBasePropertyInfo.Key.Length == -1)
{
packetBasePropertyInfo.Key.Length = sbyte.Parse(matches[currentIndex - 1].Value);
}
if (packetBasePropertyInfo.Key.Length > 0 && typeof(ICollection).IsAssignableFrom(packetBasePropertyInfo.Value.PropertyType))
{
packetBasePropertyInfo.Key.SpecialSeparator = " ";
var propertiesAttributes = packetBasePropertyInfo.Value.PropertyType.GetGenericArguments()[0]
.GetProperties().Select(s => s.GetCustomAttribute <PacketIndexAttribute>());
var length = (propertiesAttributes.Select(s => s?.Index ?? 0).Max() + 1);
var listType = typeof(List <>);
var constructedListType = listType.MakeGenericType(packetBasePropertyInfo.Value.PropertyType.GetGenericArguments()[0]);
var list = (IList)Activator.CreateInstance(constructedListType);
for (var i = 0; i < packetBasePropertyInfo.Key.Length; i++)
{
list.Add(DeserializeValue(packetBasePropertyInfo.Value.PropertyType.GetGenericArguments()[0], string.Join(".", matches.Skip(currentIndex).Take(length)),
packetBasePropertyInfo.Key,
packetBasePropertyInfo.Value.GetCustomAttributes <ValidationAttribute>(), matches,
false));
currentIndex += length;
}
packetBasePropertyInfo.Value.SetValue(deserializedPacket, list);
realIndex = currentIndex;
continue;
}
if (packetBasePropertyInfo.Key.SerializeToEnd)
{
// get the value to the end and stop deserialization
var index = matches.Count > (realIndex ?? currentIndex) ? matches[realIndex ?? currentIndex].Index
: packetContent.Length;
var valueToEnd =
packetContent.Substring(index, packetContent.Length - index);
packetBasePropertyInfo.Value.SetValue(deserializedPacket,
DeserializeValue(packetBasePropertyInfo.Value.PropertyType, valueToEnd,
packetBasePropertyInfo.Key,
packetBasePropertyInfo.Value.GetCustomAttributes <ValidationAttribute>(), matches,
includesKeepAliveIdentity));
break;
}
var currentValue = (currentIndex >= matches.Count) ? null : matches[currentIndex].Value;
// set the value & convert currentValue
packetBasePropertyInfo.Value.SetValue(deserializedPacket,
DeserializeValue(packetBasePropertyInfo.Value.PropertyType, currentValue,
packetBasePropertyInfo.Key,
packetBasePropertyInfo.Value.GetCustomAttributes <ValidationAttribute>(), matches,
includesKeepAliveIdentity));
}
else
{
break;
}
}
}
return(deserializedPacket);
}
