Auth system (new rust_core/src/auth.rs):
- Secret generated at startup, stored in /data/data/ or /sdcard/Android/data/
(not accessible to other apps). Never exposed via FFI.
- Credentials encrypted with secret, stored in separate `auth` DB table
(modules can't access through kv API)
- HTTP middleware checks Basic auth or Bearer token on /api/* and /ws
- Admin panel Auth tab for setting/clearing credentials
- FFI: rgl_auth_init, rgl_auth_set, rgl_auth_clear, rgl_auth_enabled
Integration tests (28 total, was 7):
- bridge.rs: request/response cycle, unique IDs, timeout, event broadcast
- events.rs: win1251 roundtrip, color parsing, HTML escaping
- auth.rs: XOR roundtrip, secret generation, Basic/Bearer auth
Other fixes:
- Make cjson a hard requirement (remove broken fallback JSON encoder)
- Replace io.popen('ls') with pcall-wrapped list_module_dirs() helper
- Fix console serialize: add local, move above M.init()
- Clear all medium tasks from TASKS.md
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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//! Authentication — secret generation, credential storage, request verification.
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//!
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//! Secret is generated once and stored in a file outside the modules directory.
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//! Credentials (login/password) are XOR-encrypted with the secret and stored in
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//! a separate `auth` DB table that modules cannot access through the kv API.
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use std::sync::OnceLock;
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use rand::Rng;
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use base64::{Engine as _, engine::general_purpose::STANDARD as BASE64};
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use crate::logging;
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static SECRET: OnceLock<String> = OnceLock::new();
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static CREDENTIALS: OnceLock<std::sync::Mutex<Option<(String, String)>>> = OnceLock::new();
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fn credentials() -> &'static std::sync::Mutex<Option<(String, String)>> {
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CREDENTIALS.get_or_init(|| std::sync::Mutex::new(None))
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}
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/// Generate a 32-byte hex secret.
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fn generate_secret() -> String {
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let bytes: [u8; 32] = rand::rng().random();
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bytes.iter().map(|b| format!("{b:02x}")).collect()
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}
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/// XOR encrypt/decrypt data with the secret (symmetric).
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fn xor_with_secret(data: &str, secret: &str) -> String {
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let secret_bytes = secret.as_bytes();
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let encrypted: Vec<u8> = data.as_bytes().iter().enumerate()
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.map(|(i, b)| b ^ secret_bytes[i % secret_bytes.len()])
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.collect();
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BASE64.encode(&encrypted)
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}
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/// XOR decrypt base64 data with the secret.
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fn decrypt_with_secret(encoded: &str, secret: &str) -> Option<String> {
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let encrypted = BASE64.decode(encoded).ok()?;
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let secret_bytes = secret.as_bytes();
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let decrypted: Vec<u8> = encrypted.iter().enumerate()
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.map(|(i, b)| b ^ secret_bytes[i % secret_bytes.len()])
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.collect();
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String::from_utf8(decrypted).ok()
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}
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/// Initialize auth: load or generate secret, load credentials from DB.
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/// Must be called after DB is initialized.
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/// `secret_paths`: list of paths to try for secret file (first writable wins).
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pub async fn init(secret_paths: &[String], db_conn: &tokio_rusqlite::Connection) {
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// Create auth table
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if let Err(e) = db_conn.call(|conn| {
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conn.execute_batch(
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"CREATE TABLE IF NOT EXISTS auth (key TEXT PRIMARY KEY, value TEXT NOT NULL)"
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)?;
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Ok::<_, tokio_rusqlite::rusqlite::Error>(())
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}).await {
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logging::log("ERROR", "AUTH", &format!("failed to create auth table: {e}"));
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return;
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}
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// Load or generate secret
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let secret = load_or_generate_secret(secret_paths).await;
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logging::log("INFO", "AUTH", "secret ready");
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// Load credentials from DB
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let creds = db_conn.call(|conn| {
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let login: Option<String> = conn.query_row(
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"SELECT value FROM auth WHERE key = 'login'", [], |r| r.get(0),
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).ok();
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let password: Option<String> = conn.query_row(
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"SELECT value FROM auth WHERE key = 'password'", [], |r| r.get(0),
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).ok();
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Ok::<_, tokio_rusqlite::rusqlite::Error>((login, password))
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}).await.unwrap_or((None, None));
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if let (Some(enc_login), Some(enc_pass)) = creds {
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if let (Some(login), Some(password)) = (
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decrypt_with_secret(&enc_login, &secret),
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decrypt_with_secret(&enc_pass, &secret),
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) {
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*credentials().lock().unwrap_or_else(|e| e.into_inner()) = Some((login.clone(), password));
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logging::log("INFO", "AUTH", &format!("credentials loaded for user '{login}'"));
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} else {
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logging::log("WARN", "AUTH", "credentials in DB couldn't be decrypted (secret changed?), auth disabled");
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}
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}
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SECRET.set(secret).ok();
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}
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async fn load_or_generate_secret(paths: &[String]) -> String {
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// Try to read existing secret from any path
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for path in paths {
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if let Ok(content) = tokio::fs::read_to_string(path).await {
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let trimmed = content.trim().to_string();
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if trimmed.len() == 64 {
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logging::log("DEBUG", "AUTH", &format!("secret loaded from {path}"));
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return trimmed;
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}
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}
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}
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// Generate new secret and try to write it
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let secret = generate_secret();
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for path in paths {
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if let Some(parent) = std::path::Path::new(path).parent() {
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let _ = tokio::fs::create_dir_all(parent).await;
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}
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if tokio::fs::write(path, &secret).await.is_ok() {
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logging::log("INFO", "AUTH", &format!("new secret written to {path}"));
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return secret;
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}
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}
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logging::log("WARN", "AUTH", "couldn't persist secret to any path, using ephemeral");
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secret
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}
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/// Set credentials (called from Lua FFI). Encrypts and stores in DB.
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pub fn set_credentials(login: &str, password: &str) {
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let Some(secret) = SECRET.get() else { return };
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let enc_login = xor_with_secret(login, secret);
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let enc_pass = xor_with_secret(password, secret);
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*credentials().lock().unwrap_or_else(|e| e.into_inner()) =
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Some((login.to_string(), password.to_string()));
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// Store in DB async
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let enc_login = enc_login.clone();
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let enc_pass = enc_pass.clone();
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if let Some(handle) = crate::server::runtime_handle() {
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handle.spawn(async move {
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if let Some(conn) = crate::db::get_connection() {
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let _ = conn.call(move |conn| {
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conn.execute(
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"INSERT OR REPLACE INTO auth (key, value) VALUES ('login', ?1)",
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[&enc_login],
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)?;
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conn.execute(
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"INSERT OR REPLACE INTO auth (key, value) VALUES ('password', ?1)",
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[&enc_pass],
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)?;
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Ok::<_, tokio_rusqlite::rusqlite::Error>(())
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}).await;
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logging::log("INFO", "AUTH", "credentials saved");
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}
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});
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}
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}
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/// Clear credentials.
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pub fn clear_credentials() {
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*credentials().lock().unwrap_or_else(|e| e.into_inner()) = None;
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if let Some(handle) = crate::server::runtime_handle() {
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handle.spawn(async move {
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if let Some(conn) = crate::db::get_connection() {
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let _ = conn.call(|conn| {
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conn.execute("DELETE FROM auth WHERE key IN ('login', 'password')", [])?;
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Ok::<_, tokio_rusqlite::rusqlite::Error>(())
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}).await;
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logging::log("INFO", "AUTH", "credentials cleared");
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}
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});
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}
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}
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/// Check if auth is enabled (credentials are set).
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pub fn has_auth() -> bool {
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credentials().lock().unwrap_or_else(|e| e.into_inner()).is_some()
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}
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/// Check an HTTP request's authorization.
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/// Returns true if authorized (no auth configured, or valid credentials/token).
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pub fn check_auth(auth_header: Option<&str>) -> bool {
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// No auth configured → allow all
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let creds = credentials().lock().unwrap_or_else(|e| e.into_inner());
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let Some((ref login, ref password)) = *creds else {
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return true;
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};
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let Some(header) = auth_header else {
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return false;
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};
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// Bearer token (secret)
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if let Some(token) = header.strip_prefix("Bearer ") {
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if let Some(secret) = SECRET.get() {
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return token == secret;
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}
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}
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// Basic auth
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if let Some(encoded) = header.strip_prefix("Basic ") {
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if let Ok(decoded) = BASE64.decode(encoded) {
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if let Ok(pair) = String::from_utf8(decoded) {
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if let Some((u, p)) = pair.split_once(':') {
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return u == login && p == password;
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}
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}
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}
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}
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false
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}
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/// Get the secret token (for WebSocket query param auth).
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pub fn get_secret() -> Option<&'static String> {
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SECRET.get()
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_xor_roundtrip() {
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let secret = "abcdef1234567890abcdef1234567890abcdef1234567890abcdef1234567890";
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let data = "hello world";
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let encrypted = xor_with_secret(data, secret);
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let decrypted = decrypt_with_secret(&encrypted, secret).unwrap();
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assert_eq!(decrypted, data);
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}
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#[test]
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fn test_check_auth_no_config() {
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// When no credentials set, everything passes
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// (credentials() defaults to None)
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// Note: in test environment, CREDENTIALS may have state from other tests
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// This test verifies the logic path
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assert!(check_auth(None) || has_auth());
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}
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#[test]
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fn test_generate_secret_length() {
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let secret = generate_secret();
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assert_eq!(secret.len(), 64); // 32 bytes * 2 hex chars
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assert!(secret.chars().all(|c| c.is_ascii_hexdigit()));
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}
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#[test]
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fn test_basic_auth_parse() {
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// Set up test state
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let _ = SECRET.set("a".repeat(64));
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*credentials().lock().unwrap() = Some(("admin".to_string(), "pass123".to_string()));
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// Valid basic auth
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let encoded = BASE64.encode("admin:pass123");
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assert!(check_auth(Some(&format!("Basic {encoded}"))));
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// Wrong password
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let wrong = BASE64.encode("admin:wrong");
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assert!(!check_auth(Some(&format!("Basic {wrong}"))));
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// No header
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assert!(!check_auth(None));
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// Bearer with secret
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let secret = SECRET.get().unwrap();
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assert!(check_auth(Some(&format!("Bearer {secret}"))));
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// Clean up
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*credentials().lock().unwrap() = None;
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}
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}
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Loading…
Reference in new issue