/// <summary>
/// Checks whether the given file exists on the remote ftp server or not
/// </summary>
/// <param name="path">The path of the file to check whether it exists or not.</param>
/// <returns>True if the file exists, false otherwise</returns>
public bool FileExists(string path)
{
if (this.connectionHandle == IntPtr.Zero)
{
throw new FtpException("The user is not connected to the FTP server. Please connect and try again.");
}
NativeMethods.WIN32_FIND_DATA findData = new NativeMethods.WIN32_FIND_DATA();
IntPtr fileHandle = NativeMethods.FtpFindFirstFile(this.connectionHandle, path, ref findData, NativeMethods.InternetFlagNoCacheWrite, IntPtr.Zero);
return(fileHandle != IntPtr.Zero);
}
/// <summary>
/// Retrieves the list of all directories in the given ftp directory
/// </summary>
/// <param name="path">The remote ftp directory path.</param>
/// <returns>Returns the list of diretories present in the given ftp directory.</returns>
public FtpDirectoryInfo[] GetDirectories(string path)
{
if (this.connectionHandle == IntPtr.Zero)
{
throw new FtpException("The user is not connected to the FTP server. Please connect and try again.");
}
NativeMethods.WIN32_FIND_DATA findData = new NativeMethods.WIN32_FIND_DATA();
IntPtr fileHandle = NativeMethods.FtpFindFirstFile(this.connectionHandle, path, ref findData, NativeMethods.InternetFlagNoCacheWrite, IntPtr.Zero);
try
{
List <FtpDirectoryInfo> directories = new List <FtpDirectoryInfo>();
if (fileHandle == IntPtr.Zero)
{
if (Marshal.GetLastWin32Error() == NativeMethods.ErrorNoMoreFiles)
{
return(directories.ToArray());
}
else
{
Error();
return(directories.ToArray());
}
}
if ((findData.dfFileAttributes & NativeMethods.FileAttributeDirectory) == NativeMethods.FileAttributeDirectory)
{
FtpDirectoryInfo dir = new FtpDirectoryInfo(this, new string(findData.fileName).TrimEnd('\0'))
{
LastAccessTime = findData.ftLastAccessTime.ToDateTime(), LastWriteTime = findData.ftLastWriteTime.ToDateTime(), CreationTime = findData.ftCreationTime.ToDateTime(), Attributes = (FileAttributes)findData.dfFileAttributes
};
directories.Add(dir);
}
findData = new NativeMethods.WIN32_FIND_DATA();
while (NativeMethods.InternetFindNextFile(fileHandle, ref findData) != 0)
{
if ((findData.dfFileAttributes & NativeMethods.FileAttributeDirectory) == NativeMethods.FileAttributeDirectory)
{
FtpDirectoryInfo dir = new FtpDirectoryInfo(this, new string(findData.fileName).TrimEnd('\0'))
{
LastAccessTime = findData.ftLastAccessTime.ToDateTime(), LastWriteTime = findData.ftLastWriteTime.ToDateTime(), CreationTime = findData.ftCreationTime.ToDateTime(), Attributes = (FileAttributes)findData.dfFileAttributes
};
directories.Add(dir);
}
findData = new NativeMethods.WIN32_FIND_DATA();
}
if (Marshal.GetLastWin32Error() != NativeMethods.ErrorNoMoreFiles)
{
Error();
}
return(directories.ToArray());
}
finally
{
if (fileHandle != IntPtr.Zero)
{
NativeMethods.InternetCloseHandle(fileHandle);
}
}
}
/// <summary>
/// Checks whether the given file exists on the remote ftp server or not
/// </summary>
/// <param name="path">The path of the file to check whether it exists or not.</param>
/// <returns>True if the file exists, false otherwise</returns>
public bool FileExists(string path)
{
if (this.connectionHandle == IntPtr.Zero)
{
throw new FtpException("The user is not connected to the FTP server. Please connect and try again.");
}
NativeMethods.WIN32_FIND_DATA findData = new NativeMethods.WIN32_FIND_DATA();
IntPtr fileHandle = NativeMethods.FtpFindFirstFile(this.connectionHandle, path, ref findData, NativeMethods.InternetFlagNoCacheWrite, IntPtr.Zero);
return fileHandle != IntPtr.Zero;
}
/// <summary>
/// Retrieves the list of all directories in the given ftp directory
/// </summary>
/// <param name="path">The remote ftp directory path.</param>
/// <returns>Returns the list of diretories present in the given ftp directory.</returns>
public FtpDirectoryInfo[] GetDirectories(string path)
{
if (this.connectionHandle == IntPtr.Zero)
{
throw new FtpException("The user is not connected to the FTP server. Please connect and try again.");
}
NativeMethods.WIN32_FIND_DATA findData = new NativeMethods.WIN32_FIND_DATA();
IntPtr fileHandle = NativeMethods.FtpFindFirstFile(this.connectionHandle, path, ref findData, NativeMethods.InternetFlagNoCacheWrite, IntPtr.Zero);
try
{
List<FtpDirectoryInfo> directories = new List<FtpDirectoryInfo>();
if (fileHandle == IntPtr.Zero)
{
if (Marshal.GetLastWin32Error() == NativeMethods.ErrorNoMoreFiles)
{
return directories.ToArray();
}
else
{
Error();
return directories.ToArray();
}
}
if ((findData.dfFileAttributes & NativeMethods.FileAttributeDirectory) == NativeMethods.FileAttributeDirectory)
{
FtpDirectoryInfo dir = new FtpDirectoryInfo(this, new string(findData.fileName).TrimEnd('\0')) { LastAccessTime = findData.ftLastAccessTime.ToDateTime(), LastWriteTime = findData.ftLastWriteTime.ToDateTime(), CreationTime = findData.ftCreationTime.ToDateTime(), Attributes = (FileAttributes)findData.dfFileAttributes };
directories.Add(dir);
}
findData = new NativeMethods.WIN32_FIND_DATA();
while (NativeMethods.InternetFindNextFile(fileHandle, ref findData) != 0)
{
if ((findData.dfFileAttributes & NativeMethods.FileAttributeDirectory) == NativeMethods.FileAttributeDirectory)
{
FtpDirectoryInfo dir = new FtpDirectoryInfo(this, new string(findData.fileName).TrimEnd('\0')) { LastAccessTime = findData.ftLastAccessTime.ToDateTime(), LastWriteTime = findData.ftLastWriteTime.ToDateTime(), CreationTime = findData.ftCreationTime.ToDateTime(), Attributes = (FileAttributes)findData.dfFileAttributes };
directories.Add(dir);
}
findData = new NativeMethods.WIN32_FIND_DATA();
}
if (Marshal.GetLastWin32Error() != NativeMethods.ErrorNoMoreFiles)
{
Error();
}
return directories.ToArray();
}
finally
{
if (fileHandle != IntPtr.Zero)
{
NativeMethods.InternetCloseHandle(fileHandle);
}
}
}
public static extern int InternetFindNextFile(
[In] IntPtr hInternet,
[In][Out] ref NativeMethods.WIN32_FIND_DATA findData);
public static extern IntPtr FtpFindFirstFile(
[In] IntPtr hConnect,
[In] string searchFile,
[In][Out] ref NativeMethods.WIN32_FIND_DATA findFileData,
[In] int dwFlags,
[In] IntPtr dwContext);
