/// <summary>
/// Sets the data port on the server, i.e. sends a PORT
/// command
/// </summary>
/// <param name="ep">local endpoint
/// </param>
internal virtual void SetDataPort(IPEndPoint ep)
{
byte[] hostBytes = ep.Address.GetAddressBytes();//BitConverter.GetBytes(ep.Address.Address);
if (activeIPAddress != null)
{
log.Info("Forcing use of fixed IP for PORT command");
hostBytes = activeIPAddress.GetAddressBytes();// BitConverter.GetBytes(activeIPAddress.Address);
}
// This is a .NET 1.1 API
// byte[] hostBytes = ep.Address.GetAddressBytes();
byte[] portBytes = ToByteArray((ushort)ep.Port);
// assemble the PORT command
string cmd = new StringBuilder("PORT ").
Append((short)hostBytes[0]).Append(",").
Append((short)hostBytes[1]).Append(",").
Append((short)hostBytes[2]).Append(",").
Append((short)hostBytes[3]).Append(",").
Append((short)portBytes[0]).Append(",").
Append((short)portBytes[1]).ToString();
// send command and check reply
// CoreFTP returns 250 incorrectly
FTPReply reply = SendCommand(cmd);
ValidateReply(reply, "200", "250");
}
/// <summary> Checks that the standard 220 reply is returned
/// following the initiated connection. Allow 230 as well, some proxy
/// servers return it.
/// </summary>
internal FTPReply ValidateConnection()
{
FTPReply reply = ReadReply();
ValidateReply(reply, "220", "230");
return(reply);
}
/// <summary>
/// Validate reply object
/// </summary>
/// <param name="reply"> reference to reply object
/// </param>
/// <param name="expectedReplyCode"> expect reply code
/// </param>
/// <returns> true if valid, false if invalid
/// </returns>
private bool ValidateReplyCode(FTPReply reply, string expectedReplyCode)
{
string replyCode = reply.ReplyCode;
if (strictReturnCodes)
{
if (replyCode.Equals(expectedReplyCode))
{
return(true);
}
else
{
return(false);
}
}
else
{
// non-strict - match first char
if (replyCode[0] == expectedReplyCode[0])
{
return(true);
}
else
{
return(false);
}
}
}
/// <summary> Validate the response the host has supplied against the
/// expected reply. If we get an unexpected reply we throw an
/// exception, setting the message to that returned by the
/// FTP server
///
/// </summary>
/// <param name="reply"> reply object
/// </param>
/// <param name="expectedReplyCode"> expected reply
/// </param>
/// <returns> reply object
///
/// </returns>
public virtual FTPReply ValidateReply(FTPReply reply, string expectedReplyCode)
{
if (ValidateReplyCode(reply, expectedReplyCode))
{
return(reply);
}
// got this far, not recognised
throw new FTPException(reply);
}
/// <summary> Constructor. Permits setting of reply code
///
/// </summary>
/// <param name="reply"> reply object
/// </param>
public FTPException(FTPReply reply) : base(reply.ReplyText)
{
// extract reply code if possible
try
{
this.replyCode = System.Int32.Parse(reply.ReplyCode);
}
catch (FormatException)
{
this.replyCode = -1;
}
}
/// <summary>
/// Validate the response the host has supplied against the
/// expected reply. If we get an unexpected reply we throw an
/// exception, setting the message to that returned by the
/// FTP server
/// </summary>
/// <param name="reply"> the entire reply string we received
/// </param>
/// <param name="expectedReplyCode"> the reply we expected to receive
///
/// </param>
internal virtual FTPReply ValidateReply(string reply, string expectedReplyCode)
{
FTPReply replyObj = new FTPReply(reply);
if (ValidateReplyCode(replyObj, expectedReplyCode))
{
return(replyObj);
}
// if unexpected reply, throw an exception
throw new FTPException(replyObj);
}
/// <summary> Validate the response the host has supplied against the
/// expected reply. If we get an unexpected reply we throw an
/// exception, setting the message to that returned by the
/// FTP server
///
/// </summary>
/// <param name="reply"> reply object
/// </param>
/// <param name="expectedReplyCodes"> array of expected replies
/// </param>
/// <returns> reply object
///
/// </returns>
public virtual FTPReply ValidateReply(FTPReply reply, string[] expectedReplyCodes)
{
for (int i = 0; i < expectedReplyCodes.Length; i++)
{
if (ValidateReplyCode(reply, expectedReplyCodes[i]))
{
return(reply);
}
}
// got this far, not recognised
throw new FTPException(reply);
}
internal void SetDataPort(IPEndPoint ep)
{
byte[] bytes = BitConverter.GetBytes(ep.Address.Address);
if (this.activeIPAddress != null)
{
this.log.Info("Forcing use of fixed IP for PORT command");
bytes = BitConverter.GetBytes(this.activeIPAddress.Address);
}
byte[] buffer2 = this.ToByteArray((ushort)ep.Port);
string command = new StringBuilder("PORT ").Append((short)bytes[0]).Append(",").Append((short)bytes[1]).Append(",").Append((short)bytes[2]).Append(",").Append((short)bytes[3]).Append(",").Append((short)buffer2[0]).Append(",").Append((short)buffer2[1]).ToString();
FTPReply reply = this.SendCommand(command);
this.ValidateReply(reply, new string[] { "200", "250" });
}
protected virtual FTPDataSocket CreateDataSocketPASVInternal()
{
// PASSIVE command - tells the server to listen for
// a connection attempt rather than initiating it
FTPReply replyObj = SendCommand("PASV");
ValidateReply(replyObj, "227");
string reply = replyObj.ReplyText;
// The reply to PASV is in the form:
// 227 Entering Passive Mode (h1,h2,h3,h4,p1,p2).
// where h1..h4 are the IP address to connect and
// p1,p2 the port number
// Example:
// 227 Entering Passive Mode (128,3,122,1,15,87).
// NOTE: Some FTP servers miss the brackets out completely
Regex regEx = new Regex(@"(?<a0>\d{1,3}),(?<a1>\d{1,3}),(?<a2>\d{1,3}),(?<a3>\d{1,3}),(?<p0>\d{1,3}),(?<p1>\d{1,3})");
Match m1 = regEx.Match(reply);
// assemble the IP address
// we try connecting, so we don't bother checking digits etc
string ipAddress = m1.Groups["a0"].Value + "." + m1.Groups["a1"].Value + "." + m1.Groups["a2"].Value + "." + m1.Groups["a3"].Value;
log.Debug("Server supplied address=" + ipAddress);
// assemble the port number
int[] portParts = new int[2];
portParts[0] = Int32.Parse(m1.Groups["p0"].Value);
portParts[1] = Int32.Parse(m1.Groups["p1"].Value);
int port = (portParts[0] << 8) + portParts[1];
log.Debug("Server supplied port=" + port);
string hostIP = ipAddress;
log.Debug("autoPassiveIPSubstitution=" + autoPassiveIPSubstitution);
log.Debug("remoteAddr=" + (remoteAddr == null ? "null" : remoteAddr.ToString()));
if (autoPassiveIPSubstitution && remoteAddr != null)
{
hostIP = remoteAddr.ToString();
log.Debug("Substituting server supplied IP ({0}) with remote host IP ({1})",
ipAddress, hostIP);
}
// create the socket
return(NewPassiveDataSocket(hostIP, port));
}
/// <summary>
/// Validate the response the host has supplied against the
/// expected reply. If we get an unexpected reply we throw an
/// exception, setting the message to that returned by the
/// FTP server
/// </summary>
/// <param name="reply">reply object</param>
/// <param name="expectedReplyCodes"> array of expected replies</param>
/// <returns>reply object</returns>
public virtual FTPReply ValidateReply(FTPReply reply, params string[] expectedReplyCodes)
{
if ("421" == reply.ReplyCode)
{
log.Error("Received 421 - throwing exception");
throw new FTPConnectionClosedException(reply.ReplyText);
}
foreach (string expectedReplyCode in expectedReplyCodes)
{
if (strictReturnCodes)
{
if (reply.ReplyCode == expectedReplyCode)
{
return(reply);
}
}
else
{
// non-strict - match first char
if (reply.ReplyCode[0] == expectedReplyCode[0])
{
return(reply);
}
}
}
// got this far, not recognised
StringBuilder buf = new StringBuilder("[");
int i = 0;
foreach (string expectedReplyCode in expectedReplyCodes)
{
buf.Append(expectedReplyCode);
if (i + 1 < expectedReplyCodes.Length)
{
buf.Append(",");
}
i++;
}
buf.Append("]");
log.Debug("Expected reply codes = " + buf.ToString() + " (strict=" + strictReturnCodes + ")");
// got this far, not recognised
throw new FTPException(reply);
}
internal virtual FTPDataSocket CreateDataSocketPASV()
{
FTPDataSocket socket;
bool synchronizePassiveConnections = this.SynchronizePassiveConnections;
Mutex mutex = null;
if (synchronizePassiveConnections)
{
mutex = new Mutex(false, PASV_MUTEX_NAME);
mutex.WaitOne();
}
try
{
FTPReply reply = this.SendCommand("PASV");
this.ValidateReply(reply, new string[] { "227" });
string replyText = reply.ReplyText;
Match match = new Regex(@"(?<a0>\d{1,3}),(?<a1>\d{1,3}),(?<a2>\d{1,3}),(?<a3>\d{1,3}),(?<p0>\d{1,3}),(?<p1>\d{1,3})").Match(replyText);
string str2 = match.Groups["a0"].Value + "." + match.Groups["a1"].Value + "." + match.Groups["a2"].Value + "." + match.Groups["a3"].Value;
this.log.Debug("Server supplied address=" + str2);
int[] numArray = new int[] { int.Parse(match.Groups["p0"].Value), int.Parse(match.Groups["p1"].Value) };
int port = (numArray[0] << 8) + numArray[1];
this.log.Debug("Server supplied port=" + port);
string str3 = str2;
if (this.autoPassiveIPSubstitution && (this.remoteAddr != null))
{
str3 = this.remoteAddr.ToString();
if (this.log.IsEnabledFor(Level.DEBUG))
{
this.log.Debug(string.Format("Substituting server supplied IP ({0}) with remote host IP ({1})", str2, str3));
}
}
socket = this.NewPassiveDataSocket(str3, port);
}
finally
{
if (synchronizePassiveConnections && (mutex != null))
{
mutex.ReleaseMutex();
mutex.Close();
}
}
return(socket);
}
/// <summary>
/// Sets the data port on the server, i.e. sends a PORT
/// command
/// </summary>
/// <param name="ep">local endpoint
/// </param>
internal void SetDataPort(IPEndPoint ep)
{
byte[] hostBytes = BitConverter.GetBytes(ep.Address.Address);
// This is a .NET 1.1 API
// byte[] hostBytes = ep.Address.GetAddressBytes();
byte[] portBytes = ToByteArray((ushort)ep.Port);
// assemble the PORT command
string cmd = new StringBuilder("PORT ").
Append((short)hostBytes[0]).Append(",").
Append((short)hostBytes[1]).Append(",").
Append((short)hostBytes[2]).Append(",").
Append((short)hostBytes[3]).Append(",").
Append((short)portBytes[0]).Append(",").
Append((short)portBytes[1]).ToString();
// send command and check reply
FTPReply reply = SendCommand(cmd);
ValidateReply(reply, "200");
}
public virtual FTPReply ValidateReply(FTPReply reply, params string[] expectedReplyCodes)
{
if ("421" == reply.ReplyCode)
{
this.log.Error("Received 421 - throwing exception");
throw new FTPConnectionClosedException(reply.ReplyText);
}
foreach (string str in expectedReplyCodes)
{
if (this.strictReturnCodes)
{
if (reply.ReplyCode == str)
{
return(reply);
}
}
else if (reply.ReplyCode[0] == str[0])
{
return(reply);
}
}
StringBuilder builder = new StringBuilder("[");
int num2 = 0;
foreach (string str2 in expectedReplyCodes)
{
builder.Append(str2);
if ((num2 + 1) < expectedReplyCodes.Length)
{
builder.Append(",");
}
num2++;
}
builder.Append("]");
this.log.Info(string.Concat(new object[] { "Expected reply codes = ", builder.ToString(), " (strict=", this.strictReturnCodes, ")" }));
throw new FTPException(reply);
}
/// <summary>
/// Validate an FTPReply
/// </summary>
/// <param name="reply">reply object</param>
/// <param name="expectedReplyCodes">expected codes</param>
internal void ValidateReply(FTPReply reply, string[] expectedReplyCodes)
{
control.ValidateReply(reply, expectedReplyCodes);
}
/// <summary>Quit the FTP session by sending a <c>QUIT</c> command before closing the socket.</summary>
public virtual void Quit()
{
CheckConnection(true);
if (fileFactory != null)
fileFactory.System = null;
try
{
FTPReply reply = control.SendCommand("QUIT");
lastValidReply = control.ValidateReply(reply, "221", "226");
}
finally
{
CloseDataSocket();
// ensure we clean up the connection
control.Logout();
control = null;
}
}
/// <summary> Get the help text for the specified command
///
/// </summary>
/// <param name="command"> name of the command to get help on
/// </param>
/// <returns> help text from the server for the supplied command
/// </returns>
public virtual string Help(string command)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("HELP " + command);
lastValidReply = control.ValidateReply(reply, "211", "214");
return lastValidReply.ReplyText;
}
/// <summary>
/// Validate reply object
/// </summary>
/// <param name="reply"> reference to reply object
/// </param>
/// <param name="expectedReplyCode"> expect reply code
/// </param>
/// <returns> true if valid, false if invalid
/// </returns>
private bool ValidateReplyCode(FTPReply reply, string expectedReplyCode)
{
string replyCode = reply.ReplyCode;
if (strictReturnCodes)
{
if (replyCode.Equals(expectedReplyCode))
return true;
else
return false;
}
else
{
// non-strict - match first char
if (replyCode[0] == expectedReplyCode[0])
return true;
else
return false;
}
}
/// <summary>Request to the server that the get is set up.</summary>
/// <param name="remoteFile">Name of remote file in current directory.</param>
private void InitGet(string remoteFile)
{
CheckConnection(true);
// reset the cancel flag
cancelTransfer = false;
bool close = false;
data = null;
try
{
// set up data channel
data = control.CreateDataSocket(connectMode);
data.Timeout = timeout;
// if resume is requested, we must issue REST
if (resume)
{
if (transferType.Equals(FTPTransferType.ASCII))
throw new FTPException("Resume only supported for BINARY transfers");
try
{
Restart(resumeMarker);
}
catch (FTPException ex)
{
resumeMarker = 0;
resume = false;
log.Warn("REST failed - resume will not be used (" + ex.Message + ")");
}
}
else
resumeMarker = 0;
// send the retrieve command
FTPReply reply = control.SendCommand("RETR " + remoteFile);
// Can get a 125 or a 150
lastValidReply = control.ValidateReply(reply, "125", "150");
}
catch (SystemException)
{
close = true;
throw;
}
catch (FTPException)
{
close = true;
throw;
}
finally
{
if (close)
{
resume = false;
resumeMarker = 0;
CloseDataSocket();
}
}
}
/// <summary>Validate that the Put() or get() was successful.</summary>
/// <remarks>This method is not for general use. If it is called explicitly after
/// a transfer, the connection will hang.</remarks>
public void ValidateTransfer()
{
CheckConnection(true);
FTPReply reply = null;
Exception ex1 = null;
try
{
reply = control.ReadReply();
}
catch (Exception ex)
{
ex1 = ex;
log.Warn("ReadReply failed", ex);
}
if (cancelTransfer)
{
if (reply != null)
{
lastValidReply = reply;
}
log.Warn("Transfer cancelled");
throw new FTPTransferCancelledException("Transfer cancelled.", lastBytesTransferred);
}
else if (ex1 != null)
throw ex1;
lastValidReply = control.ValidateReply(reply, "225", "226", "250");
}
private string[] Dir(string dirname, bool full, LineCallback lineCallback, object state)
{
CheckConnection(true);
try
{
// set up data channel
data = control.CreateDataSocket(connectMode);
data.Timeout = timeout;
// send the retrieve command
string command = full ? "LIST ":"NLST ";
if (showHiddenFiles)
command += "-a ";
if (dirname != null)
command += dirname;
// some FTP servers bomb out if NLST has whitespace appended
command = command.Trim();
FTPReply reply = control.SendCommand(command);
// check the control response. wu-ftp returns 550 if the
// directory is empty, so we handle 550 appropriately. Similarly
// proFTPD returns 450. If dir is empty, some servers return 226 Transfer complete
lastValidReply = control.ValidateReply(reply, "125", "226", "150", "450", "550");
// an empty array of files for 450/550
string[] result = new string[0];
// a normal reply ... extract the file list
string replyCode = lastValidReply.ReplyCode;
if (!replyCode.Equals("450") && !replyCode.Equals("550") && !replyCode.Equals("226"))
{
// get a character input stream to read data from
Encoding enc = controlEncoding == null ? Encoding.ASCII : controlEncoding;
ArrayList lines = null;
// reset the cancel flag
cancelTransfer = false;
try
{
if (enc.Equals(Encoding.ASCII))
{
lines = ReadASCIIListingData(dirname, lineCallback, state);
}
else
{
lines = ReadListingData(dirname, enc, lineCallback, state);
}
// check the control response
reply = control.ReadReply();
lastValidReply = control.ValidateReply(reply, "226", "250");
}
catch (SystemException ex)
{
ValidateTransferOnError();
log.Error("SystemException in directory listing", ex);
throw;
}
// empty array is default
if (!(lines.Count == 0))
{
log.Debug("Found " + lines.Count + " listing lines");
result = new string[lines.Count];
lines.CopyTo(result);
}
else
log.Debug("No listing data found");
}
else { // throw exception if not a "no files" message or transfer complete
string replyText = lastValidReply.ReplyText.ToUpper();
if (!dirEmptyStrings.Matches(replyText)
&& !transferCompleteStrings.Matches(replyText))
throw new FTPException(reply);
}
return result;
}
finally
{
CloseDataSocket();
}
}
internal void ValidateConnection()
{
FTPReply reply = this.ReadReply();
this.ValidateReply(reply, new string[] { "220", "230" });
}
/// <summary> Validate the response the host has supplied against the
/// expected reply. If we get an unexpected reply we throw an
/// exception, setting the message to that returned by the
/// FTP server
///
/// </summary>
/// <param name="reply"> the entire reply string we received
/// </param>
/// <param name="expectedReplyCodes"> array of expected replies
/// </param>
/// <returns> an object encapsulating the server's reply
///
/// </returns>
public virtual FTPReply ValidateReply(string reply, string[] expectedReplyCodes)
{
FTPReply replyObj = new FTPReply(reply);
return(ValidateReply(replyObj, expectedReplyCodes));
}
/// <summary> Validate the response the host has supplied against the
/// expected reply. If we get an unexpected reply we throw an
/// exception, setting the message to that returned by the
/// FTP server
///
/// </summary>
/// <param name="reply"> reply object
/// </param>
/// <param name="expectedReplyCode"> expected reply
/// </param>
/// <returns> reply object
///
/// </returns>
public virtual FTPReply ValidateReply(FTPReply reply, string expectedReplyCode)
{
if (ValidateReplyCode(reply, expectedReplyCode))
return reply;
// got this far, not recognised
throw new FTPException(reply);
}
/// <summary>
/// Request a data socket be created on the
/// server, connect to it and return our
/// connected socket.
/// </summary>
/// <returns> connected data socket
/// </returns>
internal virtual FTPDataSocket CreateDataSocketPASV()
{
// PASSIVE command - tells the server to listen for
// a connection attempt rather than initiating it
FTPReply replyObj = SendCommand("PASV");
ValidateReply(replyObj, "227");
string reply = replyObj.ReplyText;
// The reply to PASV is in the form:
// 227 Entering Passive Mode (h1,h2,h3,h4,p1,p2).
// where h1..h4 are the IP address to connect and
// p1,p2 the port number
// Example:
// 227 Entering Passive Mode (128,3,122,1,15,87).
// NOTE: PASV command in IBM/Mainframe returns the string
// 227 Entering Passive Mode 128,3,122,1,15,87 (missing
// brackets)
// extract the IP data string from between the brackets
int startIP = reply.IndexOf((System.Char) '(');
int endIP = reply.IndexOf((System.Char) ')');
// allow for IBM missing brackets around IP address
if (startIP < 0 && endIP < 0)
{
startIP = reply.ToUpper().LastIndexOf("MODE") + 4;
endIP = reply.Length;
}
string ipData = reply.Substring(startIP + 1, (endIP) - (startIP + 1));
int[] parts = new int[6];
int len = ipData.Length;
int partCount = 0;
StringBuilder buf = new StringBuilder();
// loop thru and examine each char
for (int i = 0; i < len && partCount <= 6; i++)
{
char ch = ipData[i];
if (System.Char.IsDigit(ch))
{
buf.Append(ch);
}
else if (ch != ',')
{
throw new FTPException("Malformed PASV reply: " + reply);
}
// get the part
if (ch == ',' || i + 1 == len)
{
// at end or at separator
try
{
parts[partCount++] = System.Int32.Parse(buf.ToString());
buf.Length = 0;
}
catch (FormatException)
{
throw new FTPException("Malformed PASV reply: " + reply);
}
}
}
// assemble the IP address
// we try connecting, so we don't bother checking digits etc
string ipAddress = parts[0] + "." + parts[1] + "." + parts[2] + "." + parts[3];
// assemble the port number
int port = (parts[4] << 8) + parts[5];
// create the socket
return(NewPassiveDataSocket(ipAddress, port));
}
/// <summary> Checks that the standard 220 reply is returned
/// following the initiated connection
/// </summary>
internal void ValidateConnection()
{
FTPReply reply = ReadReply();
ValidateReply(reply, "220");
}
/// <summary>
/// Get the size of a remote file.
/// </summary>
/// <remarks>
/// This is not a standard FTP command, it is defined in "Extensions to FTP", a draft RFC
/// (draft-ietf-ftpext-mlst-16.txt).
/// </remarks>
/// <param name="remoteFile">Name or path of remote file in current directory.</param>
/// <returns>Size of file in bytes.</returns>
public virtual long Size(string remoteFile)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("SIZE " + remoteFile);
lastValidReply = control.ValidateReply(reply, "213");
// parse the reply string .
string replyText = lastValidReply.ReplyText;
// trim off any trailing characters after a space, e.g. webstar
// responds to SIZE with 213 55564 bytes
int spacePos = replyText.IndexOf((System.Char) ' ');
if (spacePos >= 0)
replyText = replyText.Substring(0, (spacePos) - (0));
// parse the reply
try
{
return Int64.Parse(replyText);
}
catch (FormatException)
{
throw new FTPException("Failed to parse reply: " + replyText);
}
}
/// <summary>Set the REST marker so that the next transfer doesn't start at the beginning of the remote file</summary>
/// <remarks>
/// Issue the RESTart command to the remote server. This indicates the byte
/// position that REST is performed at. For put, bytes start at this point, while
/// for get, bytes are fetched from this point.
/// </remarks>
/// <param name="size">the REST param, the mark at which the restart is performed on the remote file.
/// For STOR, this is retrieved by SIZE</param>
/// <throws>SystemException </throws>
/// <throws>FTPException </throws>
public void Restart(long size)
{
FTPReply reply = control.SendCommand("REST " + size);
lastValidReply = control.ValidateReply(reply, "350");
}
/// <summary>Rename a file or directory.</summary>
/// <param name="from">Name of file or directory to rename.</param>
/// <param name="to">Intended name.</param>
public virtual void Rename(string from, string to)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("RNFR " + from);
lastValidReply = control.ValidateReply(reply, "350");
reply = control.SendCommand("RNTO " + to);
lastValidReply = control.ValidateReply(reply, "250");
}
/// <summary>Request the server to set up the put.</summary>
/// <param name="remoteFile">Name of remote file in current directory.</param>
/// <param name="append"><c>true</c> if appending, <c>false</c> otherwise.</param>
private void InitPut(string remoteFile, bool append)
{
CheckConnection(true);
// reset the cancel flag
cancelTransfer = false;
bool close = false;
data = null;
try
{
resumeMarker = 0;
// if resume is requested, we must obtain the size of the
// remote file
if (resume)
{
if (transferType.Equals(FTPTransferType.ASCII))
throw new FTPException("Resume only supported for BINARY transfers");
try
{
resumeMarker = Size(remoteFile);
}
catch (FTPException ex)
{
resumeMarker = 0;
resume = false;
log.Warn("SIZE failed '" + remoteFile + "' - resume will not be used (" + ex.Message + ")");
}
}
// set up data channel
data = control.CreateDataSocket(connectMode);
data.Timeout = timeout;
// issue REST
if (resume)
{
try
{
Restart(resumeMarker);
}
catch (FTPException ex)
{
resumeMarker = 0;
resume = false;
log.Warn("REST failed - resume will not be used (" + ex.Message + ")");
}
}
// send the command to store
string cmd = append?"APPE ":"STOR ";
FTPReply reply = control.SendCommand(cmd + remoteFile);
// Can get a 125 or a 150, also allow 350 (for Global eXchange Services server)
// JScape returns 151
lastValidReply = control.ValidateReply(reply, "125", "150", "151", "350");
}
catch (SystemException)
{
close = true;
throw;
}
catch (FTPException)
{
close = true;
throw;
}
finally
{
if (close)
{
resume = false;
resumeMarker = 0;
CloseDataSocket();
}
}
}
/// <summary>Change the remote working directory to that supplied.</summary>
/// <param name="dir">Name of remote directory to change to.</param>
public virtual void ChDir(string dir)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("CWD " + dir);
lastValidReply = control.ValidateReply(reply, "200", "250");
}
/// <summary>Run a site-specific command on the server.</summary>
/// <remarks>
/// Support for commands is dependent on the server.
/// </remarks>
/// <param name="command">The site command to run</param>
/// <returns><c>true</c> if command ok, <c>false</c> if command not implemented.</returns>
public virtual bool Site(string command)
{
CheckConnection(true);
// send the retrieve command
FTPReply reply = control.SendCommand("SITE " + command);
// Can get a 200 (ok) or 202 (not impl). Some
// FTP servers return 502 (not impl)
lastValidReply = control.ValidateReply(reply, "200", "202", "250", "502"); // 250 for leitch media server
// return true or false? 200 is ok, 202/502 not
// implemented
if (reply.ReplyCode.Equals("200"))
return true;
else
return false;
}
/// <summary>
/// Validate the response the host has supplied against the
/// expected reply. If we get an unexpected reply we throw an
/// exception, setting the message to that returned by the
/// FTP server
/// </summary>
/// <param name="reply"> the entire reply string we received
/// </param>
/// <param name="expectedReplyCode"> the reply we expected to receive
///
/// </param>
internal virtual FTPReply ValidateReply(string reply, string expectedReplyCode)
{
FTPReply replyObj = new FTPReply(reply);
if (ValidateReplyCode(replyObj, expectedReplyCode))
return replyObj;
// if unexpected reply, throw an exception
throw new FTPException(replyObj);
}
/// <summary>Delete the specified remote file.</summary>
/// <param name="remoteFile">Name of remote file to delete.</param>
public virtual void Delete(string remoteFile)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("DELE " + remoteFile);
lastValidReply = control.ValidateReply(reply, "200", "250");
}
/// <summary>Get modification time for a remote file.</summary>
/// <param name="remoteFile">Name of remote file.</param>
/// <returns>Modification time of file as a <c>DateTime</c>.</returns>
public virtual DateTime ModTime(string remoteFile)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("MDTM " + remoteFile);
lastValidReply = control.ValidateReply(reply, "213");
// parse the reply string, which returns UTC
DateTime ts =
DateTime.ParseExact(lastValidReply.ReplyText, modtimeFormats,
null, DateTimeStyles.None);
// return the equivalent in local time
return TimeZone.CurrentTimeZone.ToLocalTime(ts);
}
/// <summary>Create the specified remote working directory.</summary>
/// <param name="dir">Name of remote directory to create.</param>
public virtual void MkDir(string dir)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("MKD " + dir);
// some servers return 200,257, technically incorrect but
// we cater for it ...
lastValidReply = control.ValidateReply(reply, "200", "250", "257");
}
/// <summary>Get the current remote working directory.</summary>
/// <returns>The current working directory.</returns>
public virtual string Pwd()
{
CheckConnection(true);
FTPReply reply = control.SendCommand("PWD");
lastValidReply = control.ValidateReply(reply, "257");
// get the reply text and extract the dir
// listed in quotes, if we can find it. Otherwise
// just return the whole reply string
string text = lastValidReply.ReplyText;
int start = text.IndexOf((System.Char) '"');
int end = text.LastIndexOf((System.Char) '"');
if (start >= 0 && end > start)
return text.Substring(start + 1, (end) - (start + 1));
else
return text;
}
/// <summary>Change the remote working directory to the parent directory.</summary>
public virtual void CdUp()
{
CheckConnection(true);
FTPReply reply = control.SendCommand("CDUP");
lastValidReply = control.ValidateReply(reply, "200", "250");
}
/// <summary>Get the type of the OS at the server.</summary>
/// <returns>The type of server OS.</returns>
public virtual string GetSystem()
{
CheckConnection(true);
FTPReply reply = control.SendCommand("SYST");
lastValidReply = control.ValidateReply(reply, "200", "213", "215", "250"); // added 250 for leitch
return lastValidReply.ReplyText;
}
/// <summary>Sets the modification time of a remote file.</summary>
/// <remarks>
/// Although times are passed to the server with second precision, some
/// servers may ignore seconds and only provide minute precision.
/// May not be supported by some FTP servers.
/// </remarks>
/// <param name="remoteFile">Name of remote file.</param>
/// <param name="modTime">Desired modification-time to set in local time.</param>
public virtual void SetModTime(string remoteFile, DateTime modTime)
{
CheckConnection(true);
DateTime univTime = TimeZone.CurrentTimeZone.ToUniversalTime(modTime);
string timeStr = univTime.ToString(DEFAULT_TIME_FORMAT);
FTPReply reply = control.SendCommand("MFMT " + timeStr + " " + remoteFile);
lastValidReply = control.ValidateReply(reply, "213");
}
/// <summary>Login into an account on the FTP server using the user-name and password provided.</summary>
/// <remarks>This
/// call completes the entire login process. Note that
/// <see cref="Connect()"/> must be called first.</remarks>
/// <param name="user">User-name.</param>
/// <param name="password">Password.</param>
public virtual void Login(string user, string password)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("USER " + user);
// we allow for a site with no password - 230 and 232 (RFC4217) response
lastValidReply = control.ValidateReply(reply, "230", "232", "331");
if (lastValidReply.ReplyCode.Equals("230") || lastValidReply.ReplyCode.Equals("232"))
return ;
else
{
Password(password);
}
}
/// <summary>Get the server supplied features.</summary>
/// <returns>
/// <c>string</c>-array containing server features, or <c>null</c> if no features or not supported.
/// </returns>
public virtual string[] Features()
{
CheckConnection(true);
FTPReply reply = control.SendCommand("FEAT");
lastValidReply = control.ValidateReply(reply, "211", "500", "502");
if (lastValidReply.ReplyCode == "211")
{
string[] features = null;
if (lastValidReply.ReplyData != null && lastValidReply.ReplyData.Length > 2)
{
features = new string[lastValidReply.ReplyData.Length-2];
for (int i = 0; i < lastValidReply.ReplyData.Length-2; i++)
features[i] = lastValidReply.ReplyData[i+1].Trim();
}
else // no features but command supported
{
features = new string[0];
}
return features;
}
else
throw new FTPException(reply);
}
/// <summary>
/// Supply the user-name to log into an account on the FTP server.
/// Must be followed by the <see cref="Password(string)"/> method.
/// Note that <see cref="Connect()"/> must be called first.
/// </summary>
/// <param name="user">User-name.</param>
public virtual void User(string user)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("USER " + user);
// we allow for a site with no password - 230 and 232 (RFC4217) response
lastValidReply = control.ValidateReply(reply, "230", "232", "331");
}
/// <summary>
/// Send a "no operation" message that does nothing, which can
/// be called periodically to prevent the connection timing out.
/// </summary>
public void NoOperation()
{
CheckConnection(true);
FTPReply reply = control.SendCommand("NOOP");
lastValidReply = control.ValidateReply(reply, "200", "250"); // added 250 for leitch
}
/// <summary>
/// Supplies the password for a previously supplied
/// user-name to log into the FTP server. Must be
/// preceeded by the <see cref="User(string)"/> method
/// </summary>
/// <param name="password">Password.</param>
public virtual void Password(string password)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("PASS " + password);
// we allow for a site with no passwords (202)
try
{
lastValidReply = control.ValidateReply(reply, "230", "202", "332");
}
catch (FTPException ex)
{
throw new FTPAuthenticationException(ex.Message, ex.ReplyCode);
}
}
/// <summary>Abort the current action.</summary>
/// <remarks>
/// This does not close the FTP session.
/// </remarks>
protected virtual void Abort()
{
CheckConnection(true);
FTPReply reply = control.SendCommand("ABOR");
lastValidReply = control.ValidateReply(reply, "426", "226");
}
/// <summary>
/// Supply account information string to the server.
/// </summary>
/// <remarks>
/// This can be used for a variety of purposes - for example, the server could
/// indicate that a password has expired (by sending 332 in reply to
/// PASS) and a new password automatically supplied via ACCT. It
/// is up to the server how it uses this string.
/// </remarks>
/// <param name="accountInfo">account information</param>
public virtual void Account(string accountInfo)
{
CheckConnection(true);
FTPReply reply = control.SendCommand("ACCT " + accountInfo);
// ok or not implemented
try
{
lastValidReply = control.ValidateReply(reply, "230", "202");
}
catch (FTPException ex)
{
throw new FTPAuthenticationException(ex.Message);
}
}
public FTPException(FTPReply reply) : base(reply.ReplyText, reply.ReplyCode)
{
}
/// <summary>Issue arbitrary ftp commands to the FTP server.</summary>
/// <param name="command">FTP command to be sent to server.</param>
/// <param name="validCodes">Valid return codes for this command.</param>
/// <returns>The text returned by the FTP server.</returns>
public virtual string Quote(string command, string[] validCodes)
{
CheckConnection(true);
FTPReply reply = control.SendCommand(command);
// allow for no validation to be supplied
if (validCodes != null && validCodes.Length>0)
{
lastValidReply = control.ValidateReply(reply, validCodes);
}
else // not doing any validation
{
lastValidReply = reply;
}
return lastValidReply.ReplyText;
}
