Crates.io security incident: improperly stored session cookies

// This program demonstrates how to redact a cookie value before sending it to an error
// monitoring service. The crates.io incident showed that sending the raw cookie was a
// security risk. In real life, you would replace the `send_to_sentry` call with the
// actual Sentry SDK integration.

fn main() {
    // Simulated cookie value that would normally be sent to Sentry.
    let cookie = "signed_cookie_value";

    // Redact the cookie before logging the error.
    let redacted_cookie = redact_cookie(cookie);

    // Simulate sending the error event to Sentry.
    send_to_sentry(redacted_cookie);
}

fn redact_cookie(cookie: &str) -> String {
    // Replace the cookie value with a placeholder to avoid leaking user data.
    format!("REDACTED_COOKIE: {}", cookie)
}

fn send_to_sentry(_payload: String) {
    // In a real application, this would send the payload to Sentry.
    // Here we just print it to show the redaction.
    println!("Error event sent to Sentry with payload: {}", _payload);
}