/// <summary>
/// Gets hardware and internet connection information about a computer.
/// </summary>
/// <returns>A <see cref="CWComputerInfo"/> struct.</returns>
public static CWComputerInfo GetComputerInfo()
{
CWComputerInfo info=new CWComputerInfo();
info.CPUType=CPUType();
info.RAMSize=MemorySize();
info.HDDSpace=FreeDiskSpace();
info.ConnectionSpeed=NetSpeed();
return info;
}
/// <summary>
/// Produces a hash code for a <see cref="CWComputerInfo"/> object not including
/// the HDDSize value in order to make the detection of hardware changes easy.
/// </summary>
/// <param name="info">
/// The <see cref="CWComputerInfo"/> whose hash code is to be calculated.
/// </param>
/// <returns>
/// The lower part of the input's SHA1 Hash Code as a 64 bit unsigned long.
/// </returns>
public static ulong GetSHA1HashCode(CWComputerInfo info)
{
UInt64 hash=0;
string hwinfo=info.CPUType + " " + info.RAMSize.ToString() + " " + info.ConnectionSpeed.ToString();
byte [] hashcode=SHA1Hash.SHA1(System.Text.Encoding.GetEncoding(1253).GetBytes(hwinfo));
for(int i=0; i<8; i++)
{
hash <<= 8;
hash |= hashcode[hashcode.Length-i-1];
}
GC.Collect();
return hash;
}
/// <summary>
/// Updates the computer hardware info related to a client.
/// </summary>
/// <param name="ci">The <see cref="ClientInfo"/> of the client.</param>
/// <param name="info">The <see cref="CWComputerInfo"/> of the client computer.</param>
/// <returns>Null if the operation succeeds, or <see cref="SerializedException"/>
/// encapsulating the error that occured if the operation fails.</returns>
public SerializedException StoreNewClientComputerInfo(ClientInfo ci, CWComputerInfo info)
{
SerializedException sx = null;
try
{
if (!ConnectToDatabase())
{
throw new CWDBConnectionFailedException();
}
SqlCommand cmd = new SqlCommand("cw_update_client", dbcon);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@client_id", SqlDbType.UniqueIdentifier);
cmd.Parameters.Add("@user_id", SqlDbType.Int);
cmd.Parameters.Add("@info_cpu", SqlDbType.NVarChar, 50);
cmd.Parameters.Add("@info_ram", SqlDbType.SmallInt);
cmd.Parameters.Add("@info_hdd", SqlDbType.Int);
cmd.Parameters.Add("@info_net", SqlDbType.TinyInt);
cmd.Parameters[0].Value = ci.ClientID;
cmd.Parameters[1].Value = ci.UserID;
cmd.Parameters[2].Value = info.CPUType;
cmd.Parameters[3].Value = info.RAMSize;
cmd.Parameters[4].Value = info.HDDSpace;
cmd.Parameters[5].Value = (byte)info.ConnectionSpeed;
cmd.ExecuteNonQuery();
cmd.Dispose();
if (!DisconnectFromDatabase())
{
throw new CWDBConnectionFailedException("Disconnect from database failure.");
}
}
catch (Exception e)
{
sx = new SerializedException(e.GetType().ToString(), e.Message, e.ToString());
if (settings.LogLevel <= CWLogLevel.LogWarning)
{
settings.Log.LogWarning("StoreNewClientComputerInfo failed: " + e.ToString());
}
}
finally
{
LogClientAction(ci, CWClientActions.LogGetClientComputerInfo);
}
return sx;
}
public SerializedException RegisterClient(ref ClientInfo ci, CWComputerInfo info)
{
return engine.StoreClientRegistrationInfo(ref ci, info);
}
public SerializedException GetClientComputerInfo(ClientInfo ci, CWComputerInfo info)
{
return engine.StoreNewClientComputerInfo(ci, info);
}
