Rust

Get a Remote File's Last-Modified Time

Demonstrates the Chilkat SFtp.GetFileLastModifiedStr method, which returns a remote file's last-modified date and time. The arguments are the remote path (or handle), whether symbolic links are followed, and whether the first argument is a handle.

Background: The last-modified time is the workhorse timestamp — it updates whenever a file's contents change and is what incremental-sync logic compares to decide whether a file needs re-transferring. It is the most reliably supported of the three across servers and filesystems, which is why timestamp-based sync keys off it.

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// Demonstrates the SFtp.GetFileLastModifiedStr method, which returns a remote file's last-modified
// date and time.  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.

let sftp = chilkat::SFtp::new();

// Connect, authenticate, and initialize the SFTP subsystem.
let port = 22;
if sftp.connect("sftp.example.com", port).is_err() {
    println!("{}", sftp.last_error_text());
    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.
let password = "mySshPassword".to_string();

if sftp.authenticate_pw("mySshLogin", &password).is_err() {
    println!("{}", sftp.last_error_text());
    return;
}

if sftp.initialize_sftp().is_err() {
    println!("{}", sftp.last_error_text());
    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.
let b_follow_links = true;
let b_is_handle = false;

let Ok(last_modified) = sftp.get_file_last_modified_str("subdir/report.pdf", b_follow_links, b_is_handle) else {
    println!("{}", sftp.last_error_text());
    return;
};

println!("Last modified: {}", last_modified);

sftp.disconnect();