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(C#) SFTP Get/Set File Permission

Demonstrates how to set the permissions of a file on the SFTP server

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// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

Chilkat.SFtp sftp = new Chilkat.SFtp();

// Connect to the SSH/SFTP server.  
string hostname = "sftp.example.com";
int port = 22;
bool success = sftp.Connect(hostname,port);
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Authenticate with the SSH server.  Chilkat SFTP supports
// both password-based authenication as well as public-key
// authentication.  This example uses password authenication.
success = sftp.AuthenticatePw("myLogin","myPassword");
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// After authenticating, the SFTP subsystem must be initialized:
success = sftp.InitializeSftp();
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Get the file permissions for the "hamlet.xml" file on the server.
// The hamlet.xml file is located in the qa_data directory found under the HOME directory of the SSH user account.
// We are passing the remote file path (we are not passing a file handle returned by a previous call to OpenFile).
bool isHandle = false;
bool followLinks = true;
int permVal = sftp.GetFilePermissions("qa_data/hamlet.xml",followLinks,isHandle);
if (permVal < 0) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

// Note: Filesystem permissions on Linux/Unix/MacOSX are typically written in octal (POSIX file permissions).  For example 0644 is octal.
// To convert to decimal: octal 644 = 6*8^2 + 4*8 + 4 = 420 (decimal)
// 
// The server may return a permissions value (in octal) such as 100644.
// The "100" indicates the file type, such as regular file or directory. 

// Show the decimal value of the permissions
Debug.WriteLine("decimal permissions value: " + Convert.ToString(permVal));

// To set the file permissions, pass the integer value.
// Let's change the permissions to 0664, which is 6*8^2 + 6*8 + 4 = 436 (decimal)
success = sftp.SetPermissions("qa_data/hamlet.xml",isHandle,436);
if (success != true) {
    Debug.WriteLine(sftp.LastErrorText);
    return;
}

Debug.WriteLine("Success.");

 

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