public MySqlField(Driver driver)
{
this.driver = driver;
connVersion = driver.Version;
maxLength = 1;
binaryOk = true;
}
public static CharacterSet GetCharacterSet(DBVersion version, string CharSetName)
{
CharacterSet cs = null;
if (mapping.ContainsKey(CharSetName))
cs = (CharacterSet)mapping[CharSetName];
if (cs == null)
throw new MySqlException("Character set '" + CharSetName + "' is not supported by .Net Framework.");
return cs;
}
public static Stream GetStream(string server, uint port, string pipename, uint keepalive, DBVersion v, uint timeout)
{
MySqlConnectionStringBuilder settings = new MySqlConnectionStringBuilder();
settings.Server = server;
settings.Port = port;
settings.PipeName = pipename;
settings.Keepalive = keepalive;
settings.ConnectionTimeout = timeout;
return GetStream(settings);
}
public StreamCreator(string hosts, uint port, string pipeName, uint keepalive, DBVersion driverVersion)
{
hostList = hosts;
if (hostList == null || hostList.Length == 0)
hostList = "localhost";
this.port = port;
this.pipeName = pipeName;
this.keepalive = keepalive;
this.driverVersion = driverVersion;
}
public StreamCreator(string hosts, uint port, string pipeName, uint keepalive, DBVersion driverVersion)
{
hostList = hosts;
if (hostList == null || hostList.Length == 0)
{
hostList = "localhost";
}
this.port = port;
this.pipeName = pipeName;
this.keepalive = keepalive;
this.driverVersion = driverVersion;
}
/// <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("utf-8");
}
}
public static Stream GetStream(string server, uint port, string pipename, uint keepalive, DBVersion v, uint timeout)
{
MyCatConnectionStringBuilder settings = new MyCatConnectionStringBuilder();
settings.Server = server;
settings.Port = port;
settings.PipeName = pipename;
settings.Keepalive = keepalive;
settings.ConnectionTimeout = timeout;
return(GetStream(settings));
}
public void Open()
{
// connect to one of our specified hosts
try
{
baseStream = StreamCreator.GetStream(Settings);
#if NET451
if (Settings.IncludeSecurityAsserts)
MySqlSecurityPermission.CreatePermissionSet(false).Assert();
#endif
}
catch (System.Security.SecurityException)
{
throw;
}
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();
owner.isFabric = versionString.EndsWith("fabric", StringComparison.OrdinalIgnoreCase);
version = DBVersion.Parse(versionString);
if (!owner.isFabric && !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();
}
else
{
// Some MySql versions like 5.1, don't give name of plugin, default to native password.
authenticationMethod = "mysql_native_password";
}
// based on our settings, set our connection flags
SetConnectionFlags(serverCaps);
packet.Clear();
packet.WriteInteger((int)connectionFlags, 4);
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);
}
packet.WriteInteger(maxSinglePacket, 4);
packet.WriteByte(8);
packet.Write(new byte[23]);
Authenticate(authenticationMethod, 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;
}