Java

Get a Remote File's Owner

Demonstrates the Chilkat SFtp.GetFileOwner method, which returns a remote file's owner. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.

Background: Ownership determines who may read, write, or change a file under Unix permission rules, so reading the owner is useful for auditing or for deciding whether an operation will be allowed. Note that a server may report the owner as a numeric UID rather than a name if it cannot resolve the account, and that ownership is a Unix concept — servers on other platforms may return an empty or synthetic value.

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Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.SFtp;

public class ChilkatExample {

    public static void main(String[] args) {
        // Demonstrates the SFtp.GetFileOwner method, which returns a remote file's owner.  The 1st
        // argument is the remote path (or handle), the 2nd selects whether symbolic links are followed,
        // and the 3rd indicates whether the 1st argument is a handle.

        SFtp sftp = new SFtp();

        // Connect, authenticate, and initialize the SFTP subsystem.
        int port = 22;
        try {
            sftp.connect("sftp.example.com", port);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Normally you would not hard-code the password in source.  You should instead obtain it
        // from an interactive prompt, environment variable, or a secrets vault.
        String password = "mySshPassword";

        try {
            sftp.authenticatePw("mySshLogin", password);

            sftp.initializeSftp();
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // The 2nd argument (bFollowLinks) selects whether a symbolic link is followed to its target.
        // The 3rd argument (bIsHandle) is false here because the 1st argument is a path, not an
        // open handle.
        boolean bFollowLinks = true;
        boolean bIsHandle = false;

        String owner;
        try {
            owner = sftp.getFileOwner("subdir/report.pdf", bFollowLinks, bIsHandle);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        System.out.println("Owner: " + owner);

        sftp.disconnect();
    }
}