void IMySqlValue.WriteValue(MySqlPacket packet, bool binary, object val, int length)
{
byte[] buffToWrite = (val as byte[]);
if (buffToWrite == null)
{
char[] valAsChar = (val as Char[]);
if (valAsChar != null)
buffToWrite = packet.Encoding.GetBytes(valAsChar);
else
{
string s = val.ToString();
if (length == 0)
length = s.Length;
else
s = s.Substring(0, length);
buffToWrite = packet.Encoding.GetBytes(s);
}
}
// we assume zero length means write all of the value
if (length == 0)
length = buffToWrite.Length;
if (buffToWrite == null)
throw new MySqlException("Only byte arrays and strings can be serialized by MySqlBinary");
if (binary)
{
packet.WriteLength(length);
packet.Write(buffToWrite, 0, length);
}
else
{
packet.WriteStringNoNull("_binary ");
packet.WriteByte((byte)'\'');
EscapeByteArray(buffToWrite, length, packet);
packet.WriteByte((byte)'\'');
}
}
private static void EscapeByteArray(byte[] bytes, int length, MySqlPacket packet)
{
for (int x = 0; x < length; x++)
{
byte b = bytes[x];
if (b == '\0')
{
packet.WriteByte((byte)'\\');
packet.WriteByte((byte)'0');
}
else if (b == '\\' || b == '\'' || b == '\"')
{
packet.WriteByte((byte)'\\');
packet.WriteByte(b);
}
else
packet.WriteByte(b);
}
}
private void WriteOldGuid(MySqlPacket packet, Guid guid, bool binary)
{
byte[] bytes = guid.ToByteArray();
if (binary)
{
packet.WriteLength(bytes.Length);
packet.Write(bytes);
}
else
{
packet.WriteStringNoNull("_binary ");
packet.WriteByte((byte)'\'');
EscapeByteArray(bytes, bytes.Length, packet);
packet.WriteByte((byte)'\'');
}
}
private void InternalBindParameters(string sql, MySqlParameterCollection parameters,
MySqlPacket packet)
{
bool sqlServerMode = command.Connection.Settings.SqlServerMode;
if (packet == null)
{
packet = new MySqlPacket(Driver.Encoding);
packet.Version = Driver.Version;
packet.WriteByte(0);
}
MySqlTokenizer tokenizer = new MySqlTokenizer(sql);
tokenizer.ReturnComments = true;
tokenizer.SqlServerMode = sqlServerMode;
int pos = 0;
string token = tokenizer.NextToken();
int parameterCount = 0;
while (token != null)
{
// serialize everything that came before the token (i.e. whitespace)
packet.WriteStringNoNull(sql.Substring(pos, tokenizer.StartIndex - pos));
pos = tokenizer.StopIndex;
if (MySqlTokenizer.IsParameter(token))
{
if ((!parameters.containsUnnamedParameters && token.Length == 1 && parameterCount > 0) || parameters.containsUnnamedParameters && token.Length > 1)
throw new MySqlException(Resources.MixedParameterNamingNotAllowed);
parameters.containsUnnamedParameters = token.Length == 1;
if (SerializeParameter(parameters, packet, token, parameterCount))
token = null;
parameterCount++;
}
if (token != null)
{
if (sqlServerMode && tokenizer.Quoted && token.StartsWith("[", StringComparison.Ordinal))
token = String.Format("`{0}`", token.Substring(1, token.Length - 2));
packet.WriteStringNoNull(token);
}
token = tokenizer.NextToken();
}
buffers.Add(packet);
}
void IMySqlValue.WriteValue(MySqlPacket packet, bool binary, object val, int length)
{
if (!(val is TimeSpan))
throw new MySqlException("Only TimeSpan objects can be serialized by MySqlTimeSpan");
TimeSpan ts = (TimeSpan)val;
bool negative = ts.TotalMilliseconds < 0;
ts = ts.Duration();
if (binary)
{
if (ts.Milliseconds > 0)
packet.WriteByte(12);
else
packet.WriteByte(8);
packet.WriteByte((byte)(negative ? 1 : 0));
packet.WriteInteger(ts.Days, 4);
packet.WriteByte((byte)ts.Hours);
packet.WriteByte((byte)ts.Minutes);
packet.WriteByte((byte)ts.Seconds);
if (ts.Milliseconds > 0)
{
long mval = ts.Milliseconds*1000;
packet.WriteInteger(mval, 4);
}
}
else
{
String s = String.Format("'{0}{1} {2:00}:{3:00}:{4:00}.{5}'",
negative ? "-" : "", ts.Days, ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds);
packet.WriteStringNoNull(s);
}
}
public void Open()
{
// connect to one of our specified hosts
baseStream = new RemoteConnection();
baseStream.Connect(MySqlConnection.CurrentStringBuilder.ServerEndPoint, MySqlConnection.CurrentStringBuilder.ServerPort);
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();
}
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);
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;
}
void IMySqlValue.WriteValue(MySqlPacket packet, bool binary, object val, int length)
{
byte v = (val is byte) ? (byte)val : Convert.ToByte(val);
if (binary)
packet.WriteByte(v);
else
packet.WriteStringNoNull(v.ToString());
}
public virtual void Prepare()
{
// strip out names from parameter markers
string text;
List<string> parameter_names = PrepareCommandText(out text);
// ask our connection to send the prepare command
MySqlField[] paramList = null;
statementId = Driver.PrepareStatement(text, ref paramList);
// now we need to assign our field names since we stripped them out
// for the prepare
for (int i = 0; i < parameter_names.Count; i++)
{
//paramList[i].ColumnName = (string) parameter_names[i];
string parameterName = (string)parameter_names[i];
MySqlParameter p = Parameters.GetParameterFlexible(parameterName, false);
if (p == null)
throw new InvalidOperationException(
String.Format(Resources.ParameterNotFoundDuringPrepare, parameterName));
p.Encoding = paramList[i].Encoding;
parametersToSend.Add(p);
}
// now prepare our null map
int numNullBytes = 0;
if (paramList != null && paramList.Length > 0)
{
nullMap = new BitArray(paramList.Length);
numNullBytes = (nullMap.Count + 7) / 8;
}
packet = new MySqlPacket(Driver.Encoding);
// write out some values that do not change run to run
packet.WriteByte(0);
packet.WriteInteger(statementId, 4);
packet.WriteByte((byte)0); // flags; always 0 for 4.1
packet.WriteInteger(1, 4); // interation count; 1 for 4.1
nullMapPosition = packet.Position;
packet.Position += numNullBytes; // leave room for our null map
packet.WriteByte(1); // rebound flag
// write out the parameter types
foreach (MySqlParameter p in parametersToSend)
packet.WriteInteger(p.GetPSType(), 2);
dataPosition = packet.Position;
}
void IMySqlValue.WriteValue(MySqlPacket packet, bool binary, object value, int length)
{
MySqlDateTime dtValue;
string valueAsString = value as string;
if (value is DateTime)
dtValue = new MySqlDateTime(type, (DateTime)value);
else if (valueAsString != null)
dtValue = MySqlDateTime.Parse(valueAsString);
else if (value is MySqlDateTime)
dtValue = (MySqlDateTime)value;
else
throw new MySqlException("Unable to serialize date/time value.");
if (!binary)
{
SerializeText(packet, dtValue);
return;
}
if (dtValue.Millisecond > 0)
packet.WriteByte(11);
else
packet.WriteByte(7);
packet.WriteInteger(dtValue.Year, 2);
packet.WriteByte((byte)dtValue.Month);
packet.WriteByte((byte)dtValue.Day);
if (type == MySqlDbType.Date)
{
packet.WriteByte(0);
packet.WriteByte(0);
packet.WriteByte(0);
}
else
{
packet.WriteByte((byte)dtValue.Hour);
packet.WriteByte((byte)dtValue.Minute);
packet.WriteByte((byte)dtValue.Second);
}
if (dtValue.Millisecond > 0)
{
long val = dtValue.Millisecond < 1000 ? dtValue.Millisecond * 1000 : dtValue.Millisecond;
for (int x = 0; x < 4; x++)
{
packet.WriteByte((byte)(val & 0xff));
val >>= 8;
}
}
}
