async Task Authenticate(string username, NpgsqlTimeout timeout, bool async)
{
Log.Trace("Authenticating...", Id);
var msg = await ReadExpecting <AuthenticationRequestMessage>(async);
timeout.Check();
switch (msg.AuthRequestType)
{
case AuthenticationRequestType.AuthenticationOk:
return;
case AuthenticationRequestType.AuthenticationCleartextPassword:
await AuthenticateCleartext(async);
return;
case AuthenticationRequestType.AuthenticationMD5Password:
await AuthenticateMD5(username, ((AuthenticationMD5PasswordMessage)msg).Salt, async);
return;
case AuthenticationRequestType.AuthenticationGSS:
case AuthenticationRequestType.AuthenticationSSPI:
await AuthenticateGSS(async);
return;
case AuthenticationRequestType.AuthenticationGSSContinue:
throw new NpgsqlException("Can't start auth cycle with AuthenticationGSSContinue");
default:
throw new NotSupportedException($"Authentication method not supported (Received: {msg.AuthRequestType})");
}
}
async Task LoadBackendTypes(NpgsqlConnector connector, NpgsqlTimeout timeout, bool async)
{
var commandTimeout = 0; // Default to infinity
if (timeout.IsSet)
{
commandTimeout = (int)timeout.TimeLeft.TotalSeconds;
if (commandTimeout <= 0)
{
throw new TimeoutException();
}
}
var typeLoadingQuery = GenerateTypesQuery(connector.SupportsRangeTypes, connector.Settings.LoadTableComposites);
using (var command = new NpgsqlCommand(typeLoadingQuery, connector.Connection))
{
command.CommandTimeout = commandTimeout;
command.AllResultTypesAreUnknown = true;
using (var reader = async ? await command.ExecuteReaderAsync() : command.ExecuteReader())
{
// First load the types themselves
while (async ? await reader.ReadAsync() : reader.Read())
{
timeout.Check();
LoadBackendType(reader, connector);
}
if (async)
{
await reader.NextResultAsync();
}
else
{
reader.NextResult();
}
// Now load the composite types' fields
LoadCompositeFields(reader);
}
}
}