private static PayloadWriter CreateCapabilitiesPayload(ProtocolCapabilities serverCapabilities, ConnectionSettings cs, bool useCompression, ProtocolCapabilities additionalCapabilities = 0)
{
var writer = new PayloadWriter();
writer.WriteInt32((int)(
ProtocolCapabilities.Protocol41 |
ProtocolCapabilities.LongPassword |
ProtocolCapabilities.SecureConnection |
(serverCapabilities & ProtocolCapabilities.PluginAuth) |
(serverCapabilities & ProtocolCapabilities.PluginAuthLengthEncodedClientData) |
ProtocolCapabilities.MultiStatements |
ProtocolCapabilities.MultiResults |
ProtocolCapabilities.LocalFiles |
(string.IsNullOrWhiteSpace(cs.Database) ? 0 : ProtocolCapabilities.ConnectWithDatabase) |
(cs.UseAffectedRows ? 0 : ProtocolCapabilities.FoundRows) |
(useCompression ? ProtocolCapabilities.Compress : ProtocolCapabilities.None) |
(serverCapabilities & ProtocolCapabilities.ConnectionAttributes) |
(serverCapabilities & ProtocolCapabilities.DeprecateEof) |
additionalCapabilities));
writer.WriteInt32(0x4000_0000);
writer.WriteByte((byte)CharacterSet.Utf8Mb4Binary);
writer.Write(new byte[23]);
return(writer);
}
public static PayloadData Create(string databaseName)
{
var writer = new PayloadWriter();
writer.WriteByte((byte)CommandKind.InitDatabase);
writer.Write(Encoding.UTF8.GetBytes(databaseName));
return(writer.ToPayloadData());
}
public static PayloadData Create(string user, byte[] authResponse, string schemaName, byte[] connectionAttributes)
{
var writer = new PayloadWriter();
writer.WriteByte((byte)CommandKind.ChangeUser);
writer.WriteNullTerminatedString(user);
writer.WriteByte(checked ((byte)authResponse.Length));
writer.Write(authResponse);
writer.WriteNullTerminatedString(schemaName ?? "");
writer.WriteByte((byte)CharacterSet.Utf8Mb4Binary);
writer.WriteByte(0);
writer.WriteNullTerminatedString("mysql_native_password");
if (connectionAttributes != null)
{
writer.Write(connectionAttributes);
}
return(writer.ToPayloadData());
}
/// <summary>
/// Return a random outpoint and a random payload.
/// </summary>
private (Outpoint, Memory <byte>) MakeRandomRawTxo(int lowLimit, int upLimit)
{
var content = new byte[Outpoint.TotalSizeInBytes].AsMemory();
var temp = new byte[Outpoint.KeySizeInBytes - 4];
_rand.NextBytes(temp);
temp.CopyTo(content);
var index = _rand.Next(0, 20);
BitConverter.GetBytes(index).CopyTo(content.Slice(Outpoint.KeySizeInBytes - 4, 4));
var payloadLength = _rand.Next(lowLimit, upLimit);
BitConverter.GetBytes(payloadLength).CopyTo(content.Slice(Outpoint.KeySizeInBytes, 4));
var payload = new byte[payloadLength];
_rand.NextBytes(payload);
var numberOfEvents = _rand.Next(1, 5);
// write data length inside payload
BitConverter.TryWriteBytes(payload.AsSpan(sizeof(ulong), sizeof(int)),
payloadLength - sizeof(ulong) - sizeof(int) - BlockEvent.SizeInBytes * numberOfEvents);
var writer = new PayloadWriter(payload.AsSpan(payloadLength - BlockEvent.SizeInBytes * numberOfEvents));
for (var i = 0; i < numberOfEvents; ++i)
{
var ev = new BlockEvent((uint)_rand.Next(0, 1_000_000));
writer.Write(ev);
}
return(Outpoint.Create(content.Span), payload);
}
private static byte[] CreateConnectionAttributes()
{
var attributesWriter = new PayloadWriter();
attributesWriter.WriteLengthEncodedString("_client_name");
attributesWriter.WriteLengthEncodedString("MySqlConnector");
attributesWriter.WriteLengthEncodedString("_client_version");
attributesWriter.WriteLengthEncodedString(typeof(ServerSession).GetTypeInfo().Assembly.GetCustomAttribute <AssemblyInformationalVersionAttribute>().InformationalVersion);
try
{
Utility.GetOSDetails(out var os, out var osDescription, out var architecture);
if (os != null)
{
attributesWriter.WriteLengthEncodedString("_os");
attributesWriter.WriteLengthEncodedString(os);
}
attributesWriter.WriteLengthEncodedString("_os_details");
attributesWriter.WriteLengthEncodedString(osDescription);
attributesWriter.WriteLengthEncodedString("_platform");
attributesWriter.WriteLengthEncodedString(architecture);
}
catch (PlatformNotSupportedException)
{
}
using (var process = Process.GetCurrentProcess())
{
attributesWriter.WriteLengthEncodedString("_pid");
attributesWriter.WriteLengthEncodedString(process.Id.ToString(CultureInfo.InvariantCulture));
}
var connectionAttributes = attributesWriter.ToBytes();
var writer = new PayloadWriter();
writer.WriteLengthEncodedInteger((ulong)connectionAttributes.Length);
writer.Write(connectionAttributes);
return(writer.ToBytes());
}