/// <summary>
/// Retrieves the message text from SNAC(04,07) TLV 02
/// </summary>
/// <param name="stream">A received <see cref="ByteStream"/></param>
/// <param name="message">An <see cref="IM"/> object to be populated</param>
private void GetChannelOneMessage(ByteStream stream, ref IM message)
{
while (stream.HasMoreData)
{
byte identifier = stream.ReadByte();
byte version = stream.ReadByte();
ushort length = stream.ReadUshort();
switch (identifier)
{
case 0x01: // Message text
ushort charset = stream.ReadUshort();
ushort language = stream.ReadUshort();
Encoding incoming = IM.GetEncodingFromCharset(charset, language);
message.Message = Encoding.Unicode.GetString(
Encoding.Convert(incoming, Encoding.Unicode, stream.ReadByteArray(length - 4)));
break;
default: // Unhandled case
stream.AdvanceOffset(length);
break;
}
}
}
/// <summary>
/// Parses a byte buffer into an <see cref="BartID"/> object
/// </summary>
private void ReadIconInfo(byte[] buffer, UserInfo userinfo)
{
using (ByteStream iconStream = new ByteStream(buffer))
{
int iconStreamSize = iconStream.GetByteCount();
while (iconStream.CurrentPosition + 4 <= iconStreamSize)
{
BartID item = new BartID(iconStream);
// Find the end of the current data item in the stream
int endDataPosition = iconStream.CurrentPosition + item.Data.Length;
switch (item.Type)
{
case BartTypeId.BuddyIcon:
if (!GraphicsManager.IsBlankIcon(item.Data))
{
userinfo.Icon = item;
}
break;
case BartTypeId.StatusString: // Available message
using (ByteStream messageStream = new ByteStream(item.Data))
{
Encoding encoding = Encoding.UTF8;
byte[] amessage = new byte[0];
if (messageStream.HasMoreData)
{
// Pull the message to a byte array, assume at first that the encoding
// is UTF-8. If existing encoding information exists, use that instead
amessage = messageStream.ReadByteArray(messageStream.ReadByte());
// Check if there's encoding information available
if (messageStream.HasMoreData)
{
// Check to see if the encoding's been specified
if (messageStream.ReadUshort() == 0x0001)
{
messageStream.AdvanceOffset(2);
string encodingStr = messageStream.ReadString(messageStream.ReadUshort(), Encoding.ASCII);
// Try to use the encoding from the byte stream
try
{
encoding = Encoding.GetEncoding(encodingStr);
}
catch (ArgumentException)
{
Logging.WriteString(
"ReadIconInfo: Got unknown encoding for available message ("
+ encodingStr + "), falling back to UTF-8");
encoding = Encoding.UTF8;
}
}
}
}
userinfo.AvailableMessage = Encoding.Unicode.GetString(
Encoding.Convert(encoding, Encoding.Unicode, amessage));
}
break;
default:
break;
}
}
}
}
/// <summary>
/// Parses a byte buffer into an <see cref="BartID"/> object
/// </summary>
private void ReadIconInfo(byte[] buffer, UserInfo userinfo)
{
using (ByteStream iconStream = new ByteStream(buffer))
{
int iconStreamSize = iconStream.GetByteCount();
while (iconStream.CurrentPosition + 4 <= iconStreamSize)
{
BartID item = new BartID(iconStream);
// Find the end of the current data item in the stream
int endDataPosition = iconStream.CurrentPosition + item.Data.Length;
switch (item.Type)
{
case BartTypeId.BuddyIcon:
if (!GraphicsManager.IsBlankIcon(item.Data))
{
userinfo.Icon = item;
}
break;
case BartTypeId.StatusString: // Available message
using (ByteStream messageStream = new ByteStream(item.Data))
{
Encoding encoding = Encoding.UTF8;
byte[] amessage = new byte[0];
if (messageStream.HasMoreData)
{
// Pull the message to a byte array, assume at first that the encoding
// is UTF-8. If existing encoding information exists, use that instead
amessage = messageStream.ReadByteArray(messageStream.ReadByte());
// Check if there's encoding information available
if (messageStream.HasMoreData)
{
// Check to see if the encoding's been specified
if (messageStream.ReadUshort() == 0x0001)
{
messageStream.AdvanceOffset(2);
string encodingStr = messageStream.ReadString(messageStream.ReadUshort(), Encoding.ASCII);
// Try to use the encoding from the byte stream
try
{
encoding = Encoding.GetEncoding(encodingStr);
}
catch (ArgumentException)
{
Logging.WriteString(
"ReadIconInfo: Got unknown encoding for available message ("
+ encodingStr + "), falling back to UTF-8");
encoding = Encoding.UTF8;
}
}
}
}
userinfo.AvailableMessage = Encoding.Unicode.GetString(
Encoding.Convert(encoding, Encoding.Unicode, amessage));
}
break;
default:
break;
}
}
}
}