private async Task CommandPortAsync(string parameter)
{
var paramSegs = parameter.Split(',');
if (paramSegs.Length != 6)
{
await ReplyAsync(
FtpReplyCode.SyntaxErrorInParametersOrArguments,
"Syntax error, count of comma incorrect");
return;
}
try
{
var bytes = paramSegs.Select(x => byte.Parse(x)).ToArray();
IPAddress remoteIP = new IPAddress(new ArraySegment <byte>(bytes, 0, 4).ToArray());
int remotePort = (bytes[4] << 8) | bytes[5];
userActiveDataPort = remotePort;
userActiveIP = remoteIP;
userActiveProtocal = 1;
dataConnectionMode = DataConnectionMode.Active;
await dataConnection.ConnectActiveAsync(userActiveIP, userActiveDataPort, userActiveProtocal);
await ReplyAsync(FtpReplyCode.CommandOkay, "Data connection established");
return;
}
catch
{
await ReplyAsync(
FtpReplyCode.SyntaxErrorInParametersOrArguments,
"Syntax error, number format incorrect");
return;
}
}
private async Task CommandEpsvAsync(string parameter)
{
int port;
try
{
if (string.IsNullOrEmpty(parameter))
{
port = dataConnection.Listen().Port;
}
else
{
var protocal = int.Parse(parameter);
port = dataConnection.ExtendedListen(protocal);
}
}
catch (FormatException)
{
await ReplyAsync(FtpReplyCode.SyntaxErrorInParametersOrArguments, "Protocal ID incorrect.");
return;
}
catch (NotSupportedException)
{
var supportedProtocalString =
string.Join(",", dataConnection.SupportedPassiveProtocal.Select(x => x.ToString()));
await ReplyAsync(FtpReplyCode.NotSupportedProtocal, $"Protocal not supported, use({supportedProtocalString})");
return;
}
dataConnectionMode = DataConnectionMode.ExtendedPassive;
await ReplyAsync(
FtpReplyCode.EnteringEpsvMode,
string.Format("Entering extended passive mode (|||{0}|).", port));
}
private void Initialize(System.Net.IPAddress address, int port)
{
this.p_Address = address;
this.p_Port = port;
this.p_DataConnectionMode = DataConnectionMode.Passive;
this.p_PassiveConnectionCommand = "P@SW";
this.p_DataType = DataType.Binary;
this.p_DataPort = 22;
this.p_IsOpened = false;
}
private async Task CommandPasvAsync()
{
var localEP = dataConnection.Listen();
var ipBytes = localEP.Address.GetAddressBytes();
if (ipBytes.Length != 4)
{
throw new Exception();
}
var passiveEPString =
string.Format(
"{0},{1},{2},{3},{4},{5}",
ipBytes[0],
ipBytes[1],
ipBytes[2],
ipBytes[3],
(byte)(localEP.Port / 256),
(byte)(localEP.Port % 256));
dataConnectionMode = DataConnectionMode.Passive;
await ReplyAsync(FtpReplyCode.EnteringPassiveMode, "Enter Passive Mode (" + passiveEPString + ")");
}
private async Task CommandEprtAsync(string parameter)
{
if (string.IsNullOrEmpty(parameter))
{
await ReplyAsync(
FtpReplyCode.SyntaxErrorInParametersOrArguments,
"Syntax error, parameter is empty");
return;
}
var seperator = parameter[0];
var paramSegs = parameter.Split(seperator);
if (paramSegs.Length != 5)
{
await ReplyAsync(
FtpReplyCode.SyntaxErrorInParametersOrArguments,
"Syntax error, count of segments incorrect");
return;
}
int remoteProtocal;
if (!int.TryParse(paramSegs[1], out remoteProtocal))
{
await ReplyAsync(
FtpReplyCode.SyntaxErrorInParametersOrArguments,
"Protocal ID incorrect");
return;
}
IPAddress remoteIP;
int remotePort;
try
{
remoteIP = IPAddress.Parse(paramSegs[2]);
remotePort = int.Parse(paramSegs[3]);
}
catch (Exception)
{
await ReplyAsync(
FtpReplyCode.SyntaxErrorInParametersOrArguments,
"IP address or port number incorrect.");
return;
}
userActiveDataPort = remotePort;
userActiveIP = remoteIP;
userActiveProtocal = remoteProtocal;
dataConnectionMode = DataConnectionMode.ExtendedPassive;
try
{
await dataConnection.ConnectActiveAsync(userActiveIP, userActiveDataPort, userActiveProtocal);
}
catch (NotSupportedException)
{
var supportedProtocalString =
string.Join(",", dataConnection.SupportedActiveProtocal.Select(x => x.ToString()));
await ReplyAsync(FtpReplyCode.NotSupportedProtocal, $"Protocal not supported, use({supportedProtocalString})");
return;
}
await ReplyAsync(FtpReplyCode.CommandOkay, "Data connection established");
}
/// <summary>
/// 构造函数 赋值
/// </summary>
/// <param name="connectionString">链接字符串</param>
/// <param name="dbType">数据库类型</param>
/// <param name="isTran">是否启用事务</param>
public DbExecutor(string connectionString, DatabaseType dbType = DatabaseType.SqlServer, DataConnectionMode connMode = DataConnectionMode.None, IsolationLevel tranLevel = IsolationLevel.Unspecified)
{
this.DBType = dbType;
conn = this.CreateDbConnection(connectionString);
if (tranLevel != IsolationLevel.Unspecified)
{
conn.Open();
tran = conn.BeginTransaction(tranLevel);
}
}
internal static DbExecutor CreateExecutor(string connectionString, DatabaseType dbType = DatabaseType.SqlServer, DataConnectionMode connMode = DataConnectionMode.None, IsolationLevel tranLevel = IsolationLevel.Unspecified)
{
return(new DbExecutor(connectionString, dbType, connMode, tranLevel));
}