public static CharacterSet GetCharacterSet(DBVersion version, string CharSetName)
 {
     CharacterSet cs = (CharacterSet)mapping[CharSetName];
     if (cs == null)
         throw new MySqlException("Character set '" + CharSetName + "' is not supported");
     return cs;
 }
Esempio n. 2
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 public MySqlField(Driver driver)
 {
     this.driver = driver;
     connVersion = driver.Version;
     maxLength = 1;
     binaryOk = true;
 }
        public void Open()
        {
            // connect to one of our specified hosts
            try
            {
                if (Settings.ConnectionProtocol == MySqlConnectionProtocol.SharedMemory)
                {
                    SharedMemoryStream str = new SharedMemoryStream(Settings.SharedMemoryName);
                    str.Open(Settings.ConnectionTimeout);
                    baseStream = str;
                }
                else
                {
                    string pipeName = Settings.PipeName;
                    if (Settings.ConnectionProtocol != MySqlConnectionProtocol.NamedPipe)
                        pipeName = null;
            #if !DNX
                    StreamCreator sc = new StreamCreator(Settings.Server, Settings.Port, pipeName,Settings.Keepalive);
            #else
                    StreamCreator sc = new StreamCreator(Settings.Server, Settings.Port, Settings.Keepalive);
            #endif
                    baseStream = sc.GetStream(Settings.ConnectionTimeout);
                }
            }
            catch (Exception ex)
            {
                throw new MySqlException(Resources.UnableToConnectToHost,
                    (int)MySqlErrorCode.UnableToConnectToHost, ex);
            }

            if (baseStream == null)
                throw new MySqlException(Resources.UnableToConnectToHost,
                    (int)MySqlErrorCode.UnableToConnectToHost);

            int maxSinglePacket = 255 * 255 * 255;
            stream = new MySqlStream(baseStream, Encoding, false);

            stream.ResetTimeout((int)Settings.ConnectionTimeout * 1000);

            // read off the welcome packet and parse out it's values
            packet = stream.ReadPacket();
            int protocol = packet.ReadByte();
            string versionString = packet.ReadString();
            version = DBVersion.Parse(versionString);
            if (!version.isAtLeast(5, 0, 0))
                throw new NotSupportedException(Resources.ServerTooOld);
            threadId = packet.ReadInteger(4);
            encryptionSeed = packet.ReadString();

            maxSinglePacket = (256 * 256 * 256) - 1;

            // read in Server capabilities if they are provided
            ClientFlags serverCaps = 0;
            if (packet.HasMoreData)
                serverCaps = (ClientFlags)packet.ReadInteger(2);

            /* New protocol with 16 bytes to describe server characteristics */
            owner.ConnectionCharSetIndex = (int)packet.ReadByte();

            serverStatus = (ServerStatusFlags)packet.ReadInteger(2);

            // Since 5.5, high bits of server caps are stored after status.
            // Previously, it was part of reserved always 0x00 13-byte filler.
            uint serverCapsHigh = (uint)packet.ReadInteger(2);
            serverCaps |= (ClientFlags)(serverCapsHigh << 16);

            packet.Position += 11;
            string seedPart2 = packet.ReadString();
            encryptionSeed += seedPart2;

            string authenticationMethod = "";
            if ((serverCaps & ClientFlags.PLUGIN_AUTH) != 0)
            {
                authenticationMethod = packet.ReadString();
            }

            // based on our settings, set our connection flags
            SetConnectionFlags(serverCaps);

            packet.Clear();
            packet.WriteInteger((int)connectionFlags, 4);

            #if !CF
            if ((serverCaps & ClientFlags.SSL) == 0)
            {
                if ((Settings.SslMode != MySqlSslMode.None)
                && (Settings.SslMode != MySqlSslMode.Preferred))
                {
                    // Client requires SSL connections.
                    string message = String.Format(Resources.NoServerSSLSupport,
                        Settings.Server);
                    throw new MySqlException(message);
                }
            }
            else if (Settings.SslMode != MySqlSslMode.None)
            {
                stream.SendPacket(packet);
                StartSSL();
                packet.Clear();
                packet.WriteInteger((int)connectionFlags, 4);
            }
            #endif

            packet.WriteInteger(maxSinglePacket, 4);
            packet.WriteByte(8);
            packet.Write(new byte[23]);

            Authenticate(false);

            // if we are using compression, then we use our CompressedStream class
            // to hide the ugliness of managing the compression
            if ((connectionFlags & ClientFlags.COMPRESS) != 0)
                stream = new MySqlStream(baseStream, Encoding, true);

            // give our stream the server version we are connected to.
            // We may have some fields that are read differently based
            // on the version of the server we are connected to.
            packet.Version = version;
            stream.MaxBlockSize = maxSinglePacket;
        }
 /// <summary>
 /// Returns the text encoding for a given MySQL character set name
 /// </summary>
 /// <param name="version">Version of the connection requesting the encoding</param>
 /// <param name="CharSetName">Name of the character set to get the encoding for</param>
 /// <returns>Encoding object for the given character set name</returns>
 public static Encoding GetEncoding(DBVersion version, string CharSetName)
 {
     try
     {
         CharacterSet cs = GetCharacterSet(version, CharSetName);
         return Encoding.GetEncoding(cs.name);
     }
     catch (NotSupportedException)
     {
         return Encoding.GetEncoding(0);
     }
 }