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A lexicon-driven AppView for ATProto.
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16 kB · 504 lines
Rust
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use crate::AppState;use crate::auth::Claims;use crate::error::AppError;use crate::external_auth::{pds_write, state, tokens};use crate::plugin::PluginExecutor;use crate::plugin::sync::SyncProcessor;
pub fn routes() -> Router<AppState> { Router::new() .route("/providers", get(list_providers)) .route("/accounts", get(list_accounts)) .route("/{plugin_id}/authorize", get(authorize)) .route("/{plugin_id}/callback", get(callback)) .route("/{plugin_id}/connect", post(connect_with_config)) .route("/{plugin_id}/sync", post(sync)) .route("/{plugin_id}/unlink", post(unlink))}
#[derive(Serialize)]struct ProviderInfo { id: String, name: String, icon_url: Option<String>, auth_type: String, #[serde(skip_serializing_if = "Option::is_none")] config_schema: Option<serde_json::Value>,}
async fn list_providers( State(state): State<AppState>,) -> Result<Json<Vec<ProviderInfo>>, AppError> { let plugins = state.plugin_registry.list().await;
let providers: Vec<ProviderInfo> = plugins .into_iter() .map(|p| ProviderInfo { id: p.info.id.clone(), name: p.info.name.clone(), icon_url: p.info.icon_url.clone(), auth_type: p.info.auth_type.clone(), config_schema: p.info.config_schema.clone(), }) .collect();
Ok(Json(providers))}
async fn list_accounts( State(app_state): State<AppState>, claims: Claims,) -> Result<Json<Vec<tokens::LinkedAccountSummary>>, AppError> { let accounts = tokens::list_linked_accounts(&app_state.db, app_state.db_backend, claims.did()) .await .map_err(|e| AppError::Internal(e.to_string()))?;
Ok(Json(accounts))}
#[derive(Deserialize)]struct AuthorizeQuery { redirect_uri: String,}
async fn authorize( State(app_state): State<AppState>, Path(plugin_id): Path<String>, Query(query): Query<AuthorizeQuery>, domain: Option<axum::extract::Extension<std::sync::Arc<crate::domain::Domain>>>, claims: Claims,) -> Result<Json<serde_json::Value>, AppError> { let _plugin = app_state .plugin_registry .get(&plugin_id) .await .ok_or_else(|| AppError::NotFound(format!("Plugin not found: {}", plugin_id)))?;
// Generate state parameter for CSRF protection let state_param = uuid::Uuid::new_v4().to_string();
// Store state -> user mapping for callback validation // Store the frontend's redirect_uri so we can redirect back after callback state::store_state( &app_state.db, app_state.db_backend, &state_param, claims.did(), &plugin_id, &query.redirect_uri, ) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// Get plugin config (empty for now, could come from DB) let config = serde_json::Value::Null;
// Load secrets from DB (with env var fallback) let secrets = load_plugin_secrets( &app_state.db, app_state.db_backend, app_state.config.token_encryption_key.as_ref(), &plugin_id, ) .await;
// Create executor and instance let executor = PluginExecutor::new( app_state.wasm_runtime.clone(), app_state.plugin_registry.clone(), app_state.db.clone(), app_state.db_backend, app_state.http.clone(), Arc::new(app_state.lexicons.clone()), );
let mut instance = executor .instantiate(&plugin_id, &state_param, secrets, config.clone()) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// Build the backend callback URL for OpenID/OAuth return_to // This ensures the auth provider redirects back to the backend, not the frontend let domain_url = domain .map(|d| app_state.config.url_with_base_path(&d.0.url)) .unwrap_or_else(|| app_state.config.effective_public_url());
let callback_url = format!( "{}/external-auth/{}/callback", domain_url.trim_end_matches('/'), plugin_id );
let authorize_url = instance .call_get_authorize_url(&state_param, &callback_url, &config) .await .map_err(|e| AppError::Internal(e.to_string()))?;
Ok(Json(serde_json::json!({ "authorize_url": authorize_url, "state": state_param })))}
fn redirect_with_params(base_uri: &str, params: &[(&str, &str)]) -> Redirect { let separator = if base_uri.contains('?') { "&" } else { "?" }; let query: String = params .iter() .map(|(k, v)| format!("{}={}", urlencoding::encode(k), urlencoding::encode(v))) .collect::<Vec<_>>() .join("&"); Redirect::to(&format!("{}{}{}", base_uri, separator, query))}
async fn callback( State(app_state): State<AppState>, Path(plugin_id): Path<String>, Query(query_params): Query<HashMap<String, String>>,) -> Result<Redirect, AppError> { // Phase 1: Extract state param — required for both OAuth and OpenID // For OAuth: "state" param // For OpenID 2.0: also "state" (we pass it via return_to query string) let state_param = query_params .get("state") .ok_or_else(|| AppError::BadRequest("Missing state".into()))?;
// Check for error param (OAuth error response) if let Some(error) = query_params.get("error") { return Err(AppError::BadRequest(error.clone())); }
// Phase 2: Consume state — after this we have a redirect_uri let stored_state = state::consume_state(&app_state.db, app_state.db_backend, state_param) .await .map_err(|_| AppError::BadRequest("Invalid or expired state".into()))?;
// Phase 3: Verify plugin_id matches — redirect on mismatch if stored_state.plugin_id != plugin_id { return Ok(redirect_with_params( &stored_state.redirect_uri, &[("auth", "error"), ("message", "Connection failed")], )); }
// Phase 4: Everything after this redirects on error (never returns HTTP error) match callback_inner(&app_state, &stored_state, &query_params).await { Ok(()) => Ok(redirect_with_params( &stored_state.redirect_uri, &[("auth", "success")], )), Err(e) => { tracing::error!( plugin_id = %plugin_id, did = %stored_state.did, "OAuth callback failed: {e:#}" ); Ok(redirect_with_params( &stored_state.redirect_uri, &[("auth", "error"), ("message", "Connection failed")], )) } }}
async fn callback_inner( app_state: &AppState, stored_state: &state::StoredState, params: &HashMap<String, String>,) -> Result<(), Box<dyn std::error::Error>> { let config = serde_json::Value::Null; let secrets = load_plugin_secrets( &app_state.db, app_state.db_backend, app_state.config.token_encryption_key.as_ref(), &stored_state.plugin_id, ) .await;
let executor = PluginExecutor::new( app_state.wasm_runtime.clone(), app_state.plugin_registry.clone(), app_state.db.clone(), app_state.db_backend, app_state.http.clone(), Arc::new(app_state.lexicons.clone()), );
let mut instance = executor .instantiate( &stored_state.plugin_id, &stored_state.did, secrets, config.clone(), ) .await?;
let token_set = instance.call_handle_callback(params, &config).await?;
let profile = instance .call_get_profile(&token_set.access_token, &config) .await?;
let expires_at = token_set.expires_at.map(|dt| dt.to_rfc3339());
tokens::store_tokens( &app_state.db, app_state.db_backend, app_state.config.token_encryption_key.as_ref(), &stored_state.did, &stored_state.plugin_id, &profile.account_id, &token_set.access_token, token_set.refresh_token.as_deref(), Some(&token_set.token_type), None, expires_at.as_deref(), ) .await?;
Ok(())}
/// Connect with user-provided config (for API key auth type)#[derive(Deserialize)]struct ConnectConfigBody { /// User-provided configuration matching the plugin's config_schema config: serde_json::Value,}
async fn connect_with_config( State(app_state): State<AppState>, Path(plugin_id): Path<String>, claims: Claims, Json(body): Json<ConnectConfigBody>,) -> Result<Json<serde_json::Value>, AppError> { let user_did = claims.did();
let plugin = app_state .plugin_registry .get(&plugin_id) .await .ok_or_else(|| AppError::NotFound(format!("Plugin not found: {}", plugin_id)))?;
// Verify this is an API key plugin if plugin.info.auth_type != "api_key" { return Err(AppError::BadRequest( "This endpoint is only for API key authentication".into(), )); }
let secrets = load_plugin_secrets( &app_state.db, app_state.db_backend, app_state.config.token_encryption_key.as_ref(), &plugin_id, ) .await;
let executor = PluginExecutor::new( app_state.wasm_runtime.clone(), app_state.plugin_registry.clone(), app_state.db.clone(), app_state.db_backend, app_state.http.clone(), Arc::new(app_state.lexicons.clone()), );
// For API key auth, we pass the user's config to handle_callback // The params are empty since there's no OAuth flow let mut instance = executor .instantiate(&plugin_id, user_did, secrets, body.config.clone()) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// Call handle_callback with empty params (for API key auth, the config contains the key) let empty_params = HashMap::new(); let token_set = instance .call_handle_callback(&empty_params, &body.config) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// Get profile to get the account_id let profile = instance .call_get_profile(&token_set.access_token, &body.config) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// Format expires_at as RFC3339 string let expires_at = token_set.expires_at.map(|dt| dt.to_rfc3339());
// Store encrypted tokens tokens::store_tokens( &app_state.db, app_state.db_backend, app_state.config.token_encryption_key.as_ref(), user_did, &plugin_id, &profile.account_id, &token_set.access_token, token_set.refresh_token.as_deref(), Some(&token_set.token_type), None, expires_at.as_deref(), ) .await .map_err(|e| AppError::Internal(e.to_string()))?;
Ok(Json(serde_json::json!({ "status": "connected", "account_id": profile.account_id, "display_name": profile.display_name })))}
async fn sync( State(app_state): State<AppState>, Path(plugin_id): Path<String>, claims: Claims,) -> Result<Json<serde_json::Value>, AppError> { let user_did = claims.did();
let config = serde_json::Value::Null; let secrets = load_plugin_secrets( &app_state.db, app_state.db_backend, app_state.config.token_encryption_key.as_ref(), &plugin_id, ) .await;
let executor = PluginExecutor::new( app_state.wasm_runtime.clone(), app_state.plugin_registry.clone(), app_state.db.clone(), app_state.db_backend, app_state.http.clone(), Arc::new(app_state.lexicons.clone()), );
let mut instance = executor .instantiate(&plugin_id, user_did, secrets, config.clone()) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// Get decrypted access token from DB let stored = tokens::get_tokens( &app_state.db, app_state.db_backend, app_state.config.token_encryption_key.as_ref(), user_did, &plugin_id, ) .await .map_err(|e| AppError::Internal(e.to_string()))?;
let mut records = instance .call_sync_account(&stored.access_token, &config) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// Resolve game references from database crate::plugin::sync::resolve_game_references(&app_state.db, app_state.db_backend, &mut records) .await;
// Process records: sign those with sign=true let signer = app_state.attestation_signer.as_deref(); let processor = SyncProcessor::new(signer, user_did.to_string()); let processed = processor .process_records(records) .map_err(|e| AppError::Internal(e.to_string()))?;
let processed_count = processed.len();
// Write processed records to user's PDS let write_results = pds_write::write_records_to_pds(&app_state, user_did, processed).await?;
Ok(Json(serde_json::json!({ "status": "ok", "processed": processed_count, "written": write_results.len() })))}
async fn unlink( State(app_state): State<AppState>, Path(plugin_id): Path<String>, claims: Claims,) -> Result<Json<serde_json::Value>, AppError> { let user_did = claims.did();
// Delete tokens let deleted = tokens::delete_tokens(&app_state.db, app_state.db_backend, user_did, &plugin_id) .await .map_err(|e| AppError::Internal(e.to_string()))?;
// TODO: Delete accountLink record from user's PDS
Ok(Json(serde_json::json!({ "status": "ok", "was_linked": deleted })))}
async fn load_plugin_secrets( db: &sqlx::Pool<sqlx::Any>, db_backend: crate::db::DatabaseBackend, encryption_key: Option<&[u8; 32]>, plugin_id: &str,) -> HashMap<String, String> { use crate::plugin::encryption::decrypt; use base64::{Engine as _, engine::general_purpose::STANDARD as BASE64};
// Try to load from database first (if encryption key is available) if let Some(key) = encryption_key { let sql = crate::db::adapt_sql( "SELECT config FROM plugin_configs WHERE plugin_id = ?", db_backend, );
if let Ok(Some((config_json,))) = sqlx::query_as::<_, (String,)>(&sql) .bind(plugin_id) .fetch_optional(db) .await && let Ok(config) = serde_json::from_str::<serde_json::Value>(&config_json) && let Some(secrets_obj) = config.get("secrets").and_then(|s| s.as_object()) { // DB keys are full env var names (e.g., PLUGIN_STEAM_API_KEY) // Strip prefix to get short names for plugin (e.g., API_KEY) let prefix = format!("PLUGIN_{}_", plugin_id.to_uppercase()); let db_secrets: HashMap<String, String> = secrets_obj .iter() .filter_map(|(k, v)| { v.as_str().and_then(|encrypted_b64| { // Decode base64 and decrypt let encrypted = BASE64.decode(encrypted_b64).ok()?; let decrypted = decrypt(key, &encrypted).ok()?; let value = String::from_utf8(decrypted).ok()?; // Strip prefix from key to get short name let short_key = k.strip_prefix(&prefix).unwrap_or(k).to_string(); Some((short_key, value)) }) }) .collect();
if !db_secrets.is_empty() { return db_secrets; } } }
// Fall back to environment variables let prefix = format!("PLUGIN_{}_", plugin_id.to_uppercase()); std::env::vars() .filter_map(|(k, v)| k.strip_prefix(&prefix).map(|name| (name.to_string(), v))) .collect()}