IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal)
return new MySqlInt16(true);
if (length == -1)
return new MySqlInt16((short)packet.ReadInteger(2));
else
return new MySqlInt16(Int16.Parse(packet.ReadString(length)));
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal)
return new MySqlSingle(true);
if (length == -1)
{
byte[] b = new byte[4];
packet.Read(b, 0, 4);
return new MySqlSingle(BitConverter.ToSingle(b, 0));
}
return new MySqlSingle(Single.Parse(packet.ReadString(length),
CultureInfo.InvariantCulture));
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal)
return new MySqlUInt64(true);
if (length == -1)
return new MySqlUInt64(packet.ReadULong(8));
else
return new MySqlUInt64(UInt64.Parse(packet.ReadString(length)));
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
MySqlGuid g = new MySqlGuid();
g.isNull = true;
g.OldGuids = OldGuids;
if (!nullVal)
{
if (OldGuids)
return ReadOldGuid(packet, length);
string s = String.Empty;
if (length == -1)
s = packet.ReadLenString();
else
s = packet.ReadString(length);
g.mValue = new Guid(s);
g.isNull = false;
}
return g;
}
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;
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal) return new MySqlTimeSpan(true);
if (length >= 0)
{
string value = packet.ReadString(length);
ParseMySql(value);
return this;
}
long bufLength = packet.ReadByte();
int negate = 0;
if (bufLength > 0)
negate = packet.ReadByte();
isNull = false;
if (bufLength == 0)
isNull = true;
else if (bufLength == 5)
mValue = new TimeSpan(packet.ReadInteger(4), 0, 0, 0);
else if (bufLength == 8)
mValue = new TimeSpan(packet.ReadInteger(4),
packet.ReadByte(), packet.ReadByte(), packet.ReadByte());
else
mValue = new TimeSpan(packet.ReadInteger(4),
packet.ReadByte(), packet.ReadByte(), packet.ReadByte(),
packet.ReadInteger(4) / 1000000);
if (negate == 1)
mValue = mValue.Negate();
return this;
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal)
return new MySqlUByte(true);
if (length == -1)
return new MySqlUByte((byte)packet.ReadByte());
else
return new MySqlUByte(Byte.Parse(packet.ReadString(length)));
}
public int GetResult(ref int affectedRow, ref long insertedId)
{
try
{
packet = stream.ReadPacket();
}
catch (TimeoutException)
{
// Do not reset serverStatus, allow to reenter, e.g when
// ResultSet is closed.
throw;
}
catch (Exception)
{
serverStatus = 0;
throw;
}
int fieldCount = (int)packet.ReadFieldLength();
if (-1 == fieldCount)
{
string filename = packet.ReadString();
SendFileToServer(filename);
return GetResult(ref affectedRow, ref insertedId);
}
else if (fieldCount == 0)
{
// the code to read last packet will set these server status vars
// again if necessary.
serverStatus &= ~(ServerStatusFlags.AnotherQuery |
ServerStatusFlags.MoreResults);
affectedRow = (int)packet.ReadFieldLength();
insertedId = (long)packet.ReadFieldLength();
serverStatus = (ServerStatusFlags)packet.ReadInteger(2);
warnings += packet.ReadInteger(2);
if (packet.HasMoreData)
{
packet.ReadLenString(); //TODO: server message
}
}
return fieldCount;
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal)
return new MySqlString(type, true);
string s = String.Empty;
if (length == -1)
s = packet.ReadLenString();
else
s = packet.ReadString(length);
MySqlString str = new MySqlString(type, s);
return str;
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal)
return new MySqlDecimal(true);
string s = String.Empty;
if (length == -1)
s = packet.ReadLenString();
else
s = packet.ReadString(length);
return new MySqlDecimal(s);
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length, bool nullVal)
{
if (nullVal) return new MySqlDateTime(type, true);
if (length >= 0)
{
string value = packet.ReadString(length);
return ParseMySql(value);
}
long bufLength = packet.ReadByte();
int year = 0, month = 0, day = 0;
int hour = 0, minute = 0, second = 0, millisecond = 0;
if (bufLength >= 4)
{
year = packet.ReadInteger(2);
month = packet.ReadByte();
day = packet.ReadByte();
}
if (bufLength > 4)
{
hour = packet.ReadByte();
minute = packet.ReadByte();
second = packet.ReadByte();
}
if (bufLength > 7)
{
millisecond = packet.Read3ByteInt();
packet.ReadByte();
}
return new MySqlDateTime(type, year, month, day, hour, minute, second, millisecond);
}
IMySqlValue IMySqlValue.ReadValue(MySqlPacket packet, long length,
bool nullVal)
{
if (nullVal)
return new MySqlDouble(true);
if (length == -1)
{
byte[] b = new byte[8];
packet.Read(b, 0, 8);
return new MySqlDouble(BitConverter.ToDouble(b, 0));
}
string s = packet.ReadString(length);
double d;
try
{
d = Double.Parse(s, CultureInfo.InvariantCulture);
}
catch (OverflowException)
{
// MySQL server < 5.5 can return values not compatible with
// Double.Parse(), i.e out of range for double.
if (s.StartsWith("-", StringComparison.Ordinal))
d = double.MinValue;
else
d = double.MaxValue;
}
return new MySqlDouble(d);
}
public IMySqlValue ReadValue(MySqlPacket packet, long length, bool isNull)
{
this.isNull = isNull;
if (isNull)
return this;
if (length == -1)
length = packet.ReadFieldLength();
if (ReadAsString)
mValue = UInt64.Parse(packet.ReadString(length));
else
mValue = (UInt64)packet.ReadBitValue((int)length);
return this;
}