public FTPFile GetFTPFile(string ftpPath, string ftpFileName)
{
if (_errorMsg != null)
{
_errorMsg = null;
}
FTPFile retVal = null;
// fields checking
if (string.IsNullOrEmpty(ftpPath) || string.IsNullOrEmpty(ftpFileName))
{
return(retVal);
}
if (!ftpPath.EndsWith("/"))
{
ftpPath += "/";
}
try
{
FtpWebRequest requestDir = (FtpWebRequest)WebRequest.Create(ftpPath);
requestDir.KeepAlive = this.IsAlive;
requestDir.UsePassive = this.IsPassive;
requestDir.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
requestDir.Credentials = new NetworkCredential(this.Login, this.PWD);
FtpWebResponse responseDir = (FtpWebResponse)requestDir.GetResponse();
using (StreamReader readerDir = new StreamReader(responseDir.GetResponseStream()))
{
string line = readerDir.ReadLine();
FTPItem item;
while (line != null)
{
item = FTPItem.Parse(line);
if ((item != null) && (item.Name == ftpFileName) && (item is FTPFile))
{
FTPFile ftpFile = (FTPFile)item;
retVal = new FTPFile()
{
ItemType = FSItemTypeEnum.File,
FullName = ftpPath + ftpFileName,
Name = ftpFileName,
DateTime = ftpFile.DateTime,
Size = ftpFile.Size
};
break;
}
line = readerDir.ReadLine();
}
}
responseDir.Close();
}
catch (Exception ex)
{
_errorMsg = ex.Message;
}
return(retVal);
}
public static FTPItem Parse(string line)
{
if (string.IsNullOrEmpty(line))
{
return(null);
}
string[] parts = line.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (parts.Length < 4)
{
return(null);
}
FTPItem retVal;
if (parts[2] == "<DIR>")
{
retVal = new FTPFolder();
}
else
{
retVal = new FTPFile();
((FTPFile)retVal).Size = Convert.ToUInt32(parts[2]);
}
DateTime dt;
string s = parts[0] + " " + parts[1];
if (DateTime.TryParse(s, System.Globalization.CultureInfo.InvariantCulture, System.Globalization.DateTimeStyles.AdjustToUniversal, out dt) == false)
{
return(null);
}
retVal.DateTime = dt;
retVal.Name = string.Join(" ", parts.Skip(3));
return(retVal);
}
public bool DownloadFile(string ftpFullFileName, string localFullFileName)
{
_errorMsg = null;
if (string.IsNullOrEmpty(ftpFullFileName) || string.IsNullOrEmpty(localFullFileName))
{
return(false);
}
DownloadFileBeforeHandler?.Invoke(this, ftpFullFileName);
string[] tmpPair = parseFTPFileFullName(ftpFullFileName);
if (tmpPair == null)
{
_errorMsg = "Error during parse full name to path and name: " + ftpFullFileName;
DownloadFileAfterHandler?.Invoke(this, _errorMsg);
return(false);
}
string ftpPath = tmpPair[0];
string ftpFileName = tmpPair[1];
FTPFile ftpFile = GetFTPFile(ftpPath, ftpFileName);
if (ftpFile == null)
{
DownloadFileAfterHandler?.Invoke(this, "Can not get file: " + ftpFullFileName);
return(false);
}
try
{
FtpWebRequest requestDir = (FtpWebRequest)WebRequest.Create(ftpFullFileName);
requestDir.KeepAlive = false;
requestDir.UsePassive = true;
requestDir.Method = WebRequestMethods.Ftp.DownloadFile;
requestDir.Credentials = new NetworkCredential(this.Login, this.PWD);
FtpWebResponse responseDir = (FtpWebResponse)requestDir.GetResponse();
Stream responseStream = responseDir.GetResponseStream();
StreamReader stream = new StreamReader(responseStream);
using (FileStream writer = new FileStream(localFullFileName, FileMode.Create))
{
long length = responseDir.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[2048];
readCount = responseStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
writer.Write(buffer, 0, readCount);
readCount = responseStream.Read(buffer, 0, bufferSize);
}
}
stream.Dispose();
responseStream.Dispose();
responseDir.Dispose();
// set created date
FileInfo fInfo = new FileInfo(localFullFileName);
fInfo.CreationTime = ftpFile.DateTime;
fInfo.LastWriteTime = ftpFile.DateTime;
DownloadFileAfterHandler?.Invoke(this, "Success downloaded to: " + localFullFileName);
}
catch (Exception ex)
{
_errorMsg = ex.Message;
DownloadFileAfterHandler?.Invoke(this, _errorMsg);
return(false);
}
return(true);
}
