Node.js

Check if an FTP Listing Entry is a Symbolic Link

Demonstrates the Chilkat Ftp2.GetIsSymbolicLink method, which returns whether a cached directory-listing entry is a symbolic link. The only argument is a zero-based index. This information is available only when the server's listing format reports it.

Background: Symbolic links matter because following one can lead outside the expected directory or into a cycle, so recursive operations often need to identify and skip them. Unlike the file/directory distinction, symlink information is not always present — only listing formats that mark links (typically Unix-style LIST output) expose it, and this returns false when the server does not.

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Node.js

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function chilkatExample() {

    var success = false;

    //  Demonstrates the Ftp2.GetIsSymbolicLink method, which returns whether a cached directory-listing
    //  entry is a symbolic link.  The only argument is a zero-based index.  This information is only
    //  available when the server's listing format reports it.

    var ftp = new chilkat.Ftp2();

    ftp.Hostname = "ftp.example.com";
    ftp.Username = "myFtpLogin";

    //  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.
    ftp.Password = "myPassword";

    success = ftp.Connect();
    if (success == false) {
        console.log(ftp.LastErrorText);
        return;
    }

    success = ftp.ChangeRemoteDir("public_html");
    if (success == false) {
        console.log(ftp.LastErrorText);
        return;
    }

    //  GetDirCount retrieves the directory listing on the first call and returns the number of
    //  entries.  A negative return indicates failure.
    var n = ftp.GetDirCount();
    if (n < 0) {
        console.log(ftp.LastErrorText);
        return;
    }

    var i;
    for (i = 0; i <= n - 1; i++) {
        var name = ftp.GetFilename(i);
        if (ftp.GetIsSymbolicLink(i)) {
            console.log("[LINK] " + name);
        }
        else {
            console.log("       " + name);
        }

    }

    success = ftp.Disconnect();
    if (success == false) {
        console.log(ftp.LastErrorText);
        return;
    }


}

chilkatExample();